Vehicle clamp brake

FIELD: transport.

SUBSTANCE: brake clamp comprises first braking lever arranged opposite vehicle wheel first friction surface and second braking lever arranged opposite second friction surface. Moving brake shoe is mounted on first braking lever to apply brake force to first friction surface. Brake clamp houses pistons to move moving brake shoe in response to membrane extension and guide frame to guide pistons in direction perpendicular to first friction surface. Moving brake shoe applies uniform brake force to vehicle wheel together with brake shoe secured to second braking lever.

EFFECT: uniform pressure on revolving wheel surface.

13 cl, 12 dwg

 

The technical FIELD

The present invention relates to push the brake of the vehicle, which performs deceleration of the rotating object by crimping the two side friction surfaces formed on both sides of the rotating object.

The LEVEL of TECHNOLOGY

Typically, railway car equipped with newmagicpowercoffee, which converts the pressure of compressed air supplied from a source of compressed air, the oil pressure in such a way as to operate the hydraulic brake oil pressure, which comes to him from pneumohydrodrives on the hydraulic tube.

In patents JPH08-226469 and JPH08-226471, published by the Japan patent office in 1996, describes a hydraulic brake device for railway car in which the hydraulic cylinder presses the brake pad against the friction surfaces of the rotating object, in particular a brake disk, in accordance with the pressure of the incoming oil.

Meanwhile, installation of air brakes, actuated by the pressure of compressed air supplied from a source of compressed air in a railway carriage, eliminates the need to use pneumohydrodrives and hydraulic pipes.

In the patent JPH11-193835, published by the patent office of Japan the AI in 1999, described pneumatic brake device for railway car in which the admission of compressed air to the air chamber of the pneumatic actuator, the latter presses the brake pad against the friction surfaces of the rotating object. Pneumatic brake device of a traditional design, which used the lever illustrated in Fig.6.

DISCLOSURE of INVENTIONS

In the described brake device for railway cars of the hydraulic cylinder or actuator presses the part of the brake pads, and brake pad. In the brake bracket may be bent under the influence of the reaction force corresponding to the pressing force, it is impossible to ensure reliable contact with a friction surface. In addition, when the local temperature rise in the brake pad coefficient of its friction is reduced and there is a possibility of reducing its initial braking effort. When possible, the local wear of the brake pads.

Pneumatic brake, containing the lever does not provide a uniform pressing the brake pads against the friction surfaces due to the influence of the friction force acting on the abutment portion of the lever, and, therefore, it is highly probable local wear of the brake pads.

Thus, the present invention is the I provision of a uniform pressing force, with which the brake pad is pressed to rotate the object.

For solving the aforementioned problem, according to the present invention is proposed clamping the brake of the vehicle, braking the rotation of the rotating object by crimping the first frictional surface and the second frictional surface formed on each side of the specified rotating object, and includes the caliper, containing the first brake lever, which is addressed to the first friction surface, and the second brake lever, which is converted to the second friction surface, a movable brake Shoe, which is mounted on the first brake lever and applies a braking force to the first friction surface by moving toward the first friction surface, a pressure chamber formed in the brake bracket, membrane that is stretched in accordance with the pressure of the pressure chamber, the pistons, which move the brake pad in the direction of the axis of rotation of the rotating object in accordance with the stretching of the membrane, and a guiding device which guides the movement of the piston perpendicular to the first friction surface.

Detailed description, as well as other features and advantages of the present invention set forth in the following description and illustrated on p is imagemag drawings.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 is a top view of a clamping brake according to the present invention.

Figure 2 - side view of the clamping of the brake.

Figure 3 is a longitudinal section of a clutch brake for axis III-III in figure 2.

Figa and 4B is a longitudinal incisions supports the upper guide pin and the lower guide pin according to the present invention.

Figa and 5B is a top view of the movable brake pads known locking brakes with hydraulic piston and the movable brake pad holder brake according to the present invention.

6 shows a view, similar to figure 3, with a modified design of the membrane.

Fig.7 is a side view of the clamping of the brake according to the second variant of realization of the present invention.

Fig is a longitudinal section of a clutch brake according to the second variant of realization of the present invention axis VIII-VIII of figure 7.

Fig.9 is a side view of the clamping of the brake according to the third variant of implementation of the present invention.

Figure 10 is a longitudinal section of a clutch brake according to the third variant of implementation of the present invention along the axis x-X in figure 9.

DESCRIPTION of the PREFERRED VARIANTS of the INVENTION

As shown in figure 1, the clamping brake 1 railway car brakes the rotation of the wheel 5 by means of the movable brake pad 7 and direct vignau brake pads 700, located opposite each other. X axis, Y axis and Z axis in the drawing match the corresponding axis direction of the wheel 5, namely the vertical direction and the forward-backward, respectively. The first frictional surface 6A and the second friction surface 6b pre-formed on the respective side surfaces of the wheel 5 so that they were facing the movable brake pad 7 and the fixed brake pad 700, respectively.

The movable brake pad 7 is installed on the end of the first brake arm 12. Stationary brake pad 700 is installed on the end of the second brake lever 14. The first brake lever 12 and the second brake lever 14 form part of the brake caliper 10 in the form of a fork, covering two sides of the wheel 5.

As shown in figure 2, the brake bracket 10 attached to the support frame 20 of the upper guide pin 30 and the lower guide pin 32. Support frame 20 is attached to the cart or to the body of a railroad car.

As shown in figa and 4B, the upper guide pin 30 and the lower guide pin 32, respectively, pass through the bifurcated cantilever supports 15 and 16, made on the brake bracket 10. The corresponding ends of the upper guide pin 30 and the lower guide pin 32 fixed cantilever supports 15 is 16.

The upper guide pin 30 passes through the support frame 20 between the console supports 15 and 16 through the two rubber bushings 33 and the radial bearing 35, located between the sleeves 33. Radial bearing 35 allows the upper guide pin 30 to move in the direction of the axis X and to perform a reciprocating motion relative to the X axis, as well as to perform a reciprocating motion within a limited range relative to the Central axis Z of the radial bearing 35. On the other hand, the parallel movement of the upper guide pin 30 in the Y axis direction and Z axis direction of the drawing is limited.

The lower guide pin 32 passes through the support frame 20 between the console supports 15 and 16 through the rubber sleeve 36. Sleeve 36 allows the lower guide pin 32 to move in the direction of the axis X and to perform a reciprocating motion relative to the X axis, as well as to perform a reciprocating motion within a limited range along the Z-axis similar to the upper guide pin 30. In addition, the elastic deformation of the rubber bushings 36 allows the lower guide pin 32 to perform a small parallel displacement in the Y axis direction and Z axis direction of the drawing.

The distance between the cantilever supports 15 and 16 is significantly greater than the width of the priori of the frame 20, the upper guide pin 30 is closed by a rubber boot 34 in the area between frame 20 and each of the cantilever supports 15, 16 to protect it from external influences. Similarly, the upper guide pin 30 of the lower guide pin 32 is closed by a rubber boot 34 in the area between frame 20 and each of the cantilever supports 15, 16.

Due to the above setting of the upper guide pin 30 and the lower guide pin 32, the brake bracket 10 can be moved in the direction of the axis X between a cart or building of a railroad car and wheel 5, or, in other words, may have relative movement in the direction of the axis X perpendicular to the rail car. When this movable brake pad 7 and the fixed brake pad 700 is kept parallel to the first frictional surface 6A of the wheel 5 and the second friction surface 6b of the wheel 5, respectively.

As shown in figure 1, the brake bracket 10 includes a plug 13, which connects the first brake lever 12 with the second brake lever 14.

Stationary brake pad 700, which is located on the opposite side of the wheel 5 relative to the movable brake pad 7 is attached directly to the second brake lever 14. Stationary brake pad 700 includes a gasket 9, the configuration of which about who has contact with the second friction surface 6b during rotation of the wheel 5.

Diaphragm actuator 60 that moves the movable brake pad 7, built in the first brake lever 12, which relies on the movable brake pad 7. The movable brake pad 7 includes a gasket 9, the configuration of which provides contact with the first frictional surface 6A, building 7a, to which is attached a strip 9, and sientelo part 7b performed on the rear surface of the housing 7a. Soedinitelnaya portion 7b is inserted into the holder 8 and can freely move in the direction of y-axis Holder 8 includes rail guides 8A, which are located opposite each other in the Y axis direction and are designed to accommodate and retain soedinitelnoj part 7b.

As shown in figure 3, the upper end and the lower end of the holder 8, respectively, are included in the slots 98, made on the outer periphery of the support fingers 43 above and below the holder 8. The support fingers 43 are in the direction of the wheel 5 of the shims 41, which are attached, respectively, to upper and lower ends of the first brake arm 12 anchor bolts 42. When inserted into the upper and lower ends of the holder 8 in the slots 98 of the upper and lower ends soedinitelnoj part 7b of the movable brake pad 7 against the end of the support fingers 43, thus moving the movable brake pad 7 in the Y axis direction of the exhaust gas is bicheno.

To attach the movable brake pad 7 to the first brake lever 12 sientelo part 7b of the movable brake pad 7 is inserted into the rail guides 8A of the holder 8 from the bottom in this position, when the adjustment device 41 and the abutment finger 43 is disconnected from the lower end of the first brake arm 12. When soedinitelnaya part 7b reaches a certain position of the holder 8, a shim 41 and the abutment finger 43 attach the anchor bolt 42 to the lower end of the first brake arm 12. The upper end and the lower end of the holder 8, respectively, are included in the notches 98 of the support fingers 43 so that movement of the movable brake pad 7 in the Y axis direction is limited.

The adjusting device 41 includes a return spring 44 which moves the movable brake pad 7 in a direction opposite to the first frictional surface 6A, and the adjusting mechanism 45 to adjust the gap, which sets almost constant gap between the movable brake pad 7 and the first frictional surface 6A, if the movable brake pad 7 is not valid any strength, but the strength of the compression of the return spring 44. Disabling a brake movable brake pad 7 departs from the first frictional surface 6A under the action of return spring 44 and raspolagaetsja opposite the first frictional surface 6A with a gap, the value of which specifies the mechanism 45.

The adjusting device 41 is a known mechanism, which is described in the patent JPH06-288417, published by the Japan patent office in 1994, Its content is included in this application by reference, and therefore detailed description is omitted.

By using the above-described supporting structure movable brake pad 7 is based on the first brake lever 12 and is capable of moving in the direction of the X-axis being parallel to the first frictional surface 6A.

As shown in figure 2, at the upper end and the lower end of the first brake arm 12 is arcuate recesses 12A and 12b, respectively, intended for connection of the adjusting device 41. Diaphragm actuator 60 is attached to the first brake lever 12 between the upper and lower adjusting devices 41 and facing the movable brake pad 7.

As shown in figure 3, the diaphragm actuator 60 includes a closed cylinder 70, formed in the brake lever 12, the diaphragm 75, located in the cylinder 70, the pressure chamber 63 located between the bottom part 72 of the cylinder 70 and the diaphragm 75, the piston 55 is located between the diaphragm 75 and the movable brake pad 7, and the guide frame 65, which supports the piston 55 by enabling them to move in the direction of the axis X. in EMA braking railway carriage membrane 75 moves the pistons 55 under the action of air pressure, coming in the pressure chamber 63, the holder 8 is compressed in the direction of the X axis, and the movable brake pad 7 is pressed against the first frictional surface 6A. For this purpose, the holder 8 perform so that its flat surface was larger than the membrane 75 on which is located the piston 55.

The cylinder 70 has an internal wall 71, which has an essentially elliptical cross-section and passes in the direction of the X axis, and the bottom part 72, which is made as a unit with the inner wall of the cylinder 71 in the plane defined by the Y-axis and Z-axis, and closes one end of the cylinder 70, and the annular connecting the support 73 formed on the other end wall 71 for attaching the peripheral edge 76 of the diaphragm 75.

As shown in figure 2, the strip 9 of the movable brake pad 7 has a curved shape, rounded in the direction of rotation of the wheel 5, and is divided into segments relative to the direction of rotation of the wheel 5, as shown in the drawing by dashed lines. Each segment is attached to the housing 7a.

As seen from the X axis direction, the inner wall 71 of the cylinder formed by curved parts s and 71d formed around the outer peripheral edge of the strip 9 of the movable brake pad 7 and facing in the direction of the Z axis, or, in other words, on the managing back and forth relative to the railway car, as well as the upper and lower arcuate portions 71A and 71b connected with these curved parts s and 71d. As seen from the X axis direction, the arc of the curved parts s and 71d of the wall corresponds to a concentric circle centered on the axis of the wheel 5.

The cylinder 70 and the movable brake pad 7 are vertically symmetrical with respect to the Central axis Oz is parallel to the axis Z, of the brake caliper 10. The connecting grooves 12A and 12b of the adjusting device are arranged in vertically symmetrical positions with respect to the Central axis Oz. Arcuate portion 71A and 71b of the inner wall 71 of the cylinder to form an arc, which has the orientation opposite to the connecting grooves 12A and 12b of the adjusting device.

As shown in figure 3, the annular connecting bearing 73 is formed on the end of the inner wall 71 of the cylinder in the plane defined by the Y axis and z axis. Peripheral edge of the guide frame 65 is attached to the support 73 by bolts 66. While peripheral edge 76 of the membrane 75 is located between the peripheral edge of the frame rail 65 and the connecting support 73.

Membrane 75 has a peripheral edge 76, the corrugated portion 77 that extends from the peripheral edge 76 to the bottom part 72 along the inner wall 71 of the cylinder, and then bends back and the inside of essentially 180 degrees, and so jimusho part 79, which presses the piston and forms on the inner side of the corrugated portion 77, the plane that is parallel to the movable brake pad 7. The peripheral edge 76, a crimped portion 77 and the pressing part 79 made in one piece of rubber. Clamping portion 79 has an essentially elliptical flat shape, slightly smaller cross-section of the cylinder 70, which is limited by the inner wall 71 of the cylinder, but a similar form.

The guide frame 65 is located between the diaphragm 75 and the holder 8. In the guide frame 65 in the direction of the axis X is made guide holes 65A, the number of which is equal to the number of pistons 55, while the pistons 55 are included in the corresponding guide holes 65A and can freely move in the direction of the x axis.

As shown in figure 2, guide holes 65A are arranged with equal angular intervals on three concentric circles with center on the axis of the wheel 5. Guide holes 65A, performed on the average of the three concentric circles are evenly spaced and addressed to the Central part of the movable brake pad 7. Guide holes 65A, made on the outer of the three concentric circles are arranged with equal intervals along the curved part s wall and facing the outer peripheral part of the movable brake pad 7 guide holes 65A, made on the inside of the three concentric circles are arranged with equal intervals along the curved portion 71d of the wall and facing the inner peripheral part of the movable brake pad 7.

The outer diameter of each piston 55 is, for example, 22 millimeters (mm). Pistons 55 are essentially with the same density on the entire surface of the movable brake pad 7.

Figure 2 shows that the pistons 55 are arranged in three rows, however, this arrangement of the piston 55 is not restrictive. Changing the outer diameter and the length of the piston 55 in the axial direction, to adjust the distribution efforts of the clamp attached to the movable brake pad 7.

As shown in figure 3, to the end of each piston 55 is attached disc-shaped insulating plate 61 made of a heat insulating material. thermal insulating plate 61 prevents the transfer of heat, which is formed in the gasket 9, the diaphragm 75.

The back plate 62 attached to the rear surface of the holding portion 79 of the diaphragm 75. The back plate 62 is attached to the holding portion 79 by bolts 67. The back plate 62 is made of sheet material and has a shape essentially identical to the shape of the pressing part 79. The bolts 67 are essentially equal intervals along the peripheral edge of the back of lastine 62.

As shown in figure 2, the caliper 10 is a through hole 69 for supply of compressed air in the pressure chamber 63 from a source of compressed air, installed in a railway carriage. A through hole 69 is made on the Central axis Oz of the brake caliper 10 by means of mechanical processing. The compressed air in the pressure chamber 63 through the through hole 69 regulate by means of the switching valve, which operates in accordance with a control signal from the controller. In the absence of braking pressure chamber 63 is open and communicates with the atmosphere.

In the absence of inhibition in the locking brake 1 described above, the movable brake pad 7 is removed from the first frictional surface 6A of the wheel 5 by the action of the elastic force of the return spring 44 of the two adjusting devices 41. In addition, the pressure in the pressure chamber 63 is low, and therefore the membrane 75 is compressed so that the piston 55 are held in the designated position.

When braking membrane 75 is stretched in accordance with the compressed air in the pressure chamber 63, with return spring 44 of the adjusting devices 41 are deformed so that the movable brake pad 7 is pressed against the first frictional surface 6A under the action of the piston 55, the insulating plate 61 and the holder 8. In R. the result of the lining 9 of the movable brake pad 7 comes in contact with the first frictional surface 6A of the wheel 5, thus causing the braking of the rotation of the wheel 5 by means of the friction force.

On figa shows the known clamping brake with a hydraulic piston. The known device performs braking by means of two pistons which presses the movable brake pad 7 to rotate the object using the pressure of the working fluid is oil-based, which flows into the oil pressure chamber 48. In the known device the dimensions of the cylinder 47, which houses the pistons, and the desired pressure of the oil supplied to the oil pressure chamber 48, is determined as follows. The shaded part of the drawing shows the surface area of the piston to which is applied the pressure.

The diameter of the cylinder 47: F. 38 (mm) × 2

The cross-sectional area of the cylinder 47 (surface area of the piston to which is applied the pressure): 2,268 square millimeter (mm2)

The required oil pressure: 9 megapascals (MPa)

Pressing force = 2268×9 = about 20 kN (kN)

Figv illustrates a pneumatic diaphragm clamping brake 1 according to the present invention. This brakes the cross-sectional area of the cylinder 70 and the desired pressure of air supplied to the pressure chamber 63, is determined as follows.

The cross-sectional area of the cylinder 70 (= membrane surface area 75, to which is applied on the pressure): 27,697 (mm 2)

Required air pressure: 0.75 (MPa)

Pressing force = 27697×0.75 = about 20 (kN)

Pressing force of the movable brake pad holder brake 1 according to the present invention is approximately 20 kN, i.e. the same pressing force in the known locking brakes with hydraulic piston.

Thus, the diaphragm 75 in the confined space of the brake caliper 10 you can get a large enough surface area for the application of pressure, and, consequently, the diaphragm actuator 60 clamping brake 1 can provide the contact force required for the movable brake pad 7, using air pressure, which is much lower than the desired oil pressure.

Clamping brake 1 according to the present invention presses the brake pad 7 to the first frictional surface 6A of the piston 55 as a result of expansion of the membrane 75. Even if the brake bracket 10 is bent or on the surface of the rotation of the first frictional surface 6A in response to the pressing force against deformation occurs, the movable brake pad 7 is pressed against the first frictional surface 6A, exerting uniform pressure over the surface of contact. Thus, the coefficient of friction of the movable brake pad 7 can be continuously maintained at a high level, which allows you to save the initial stress is braking the movable brake pad 7. In addition, since the pressure is evenly distributed over the surface of the contact, the local temperature rise in the movable brake pad 7 or the first frictional surface 6A is unlikely and, therefore, is unlikely occurrence of local wear of the movable brake pad 7 and the first friction surface 6.

If during braking the brake lever 12 of the brake caliper 10 is unbent in the direction of detaching from the first frictional surface 6A from the wheel 5, the movable brake pad 7 is held parallel to the first frictional surface 6A. Thus, it is possible to prevent local wear of the gasket 9 in the radial direction.

Pistons 55 and the guide frame 65 clamping brake 1 are positioned between the diaphragm 75 and the movable brake pad 7, which prevents the transfer of heat these elements from the movable brake pad 7 membrane 75. Thus, a reduced likelihood of thermal damage to the membrane 75.

Diaphragm actuator 60 moves the movable brake pad 7, with the pressure of the compressed air coming from the compressed air source installed in the wagon, so the need to install pneumohydrodrives, the source of oil pressure and hydraulic system in jeleznodorojnay the car is missing. Thus, the use of a clutch brake 1 according to the present invention reduces the weight of a railroad car.

Instead of compressed air in the pressure chamber 63 of the clamping brake 1 can be supplied oil under pressure. In this case, also use a greater number of pistons than traditional locking brakes with hydraulic pistons that can be evenly pressed against the movable brake pad 7. In addition, through the use of a large number of the pistons increases the surface area to which is applied the pressure, resulting in the desired contact pressure can be achieved at low oil pressure. This allows to reduce the size of pneumohydrodrives.

Brake bracket 10 is supported in a floating condition of the upper guide pin 30 and the lower guide pin 32, which allows you to move it in the direction of the X axis relative to the support frame 20, and therefore, moving through the membrane actuator 60 mounted on the first brake lever 12, the first brake lever 12 and the second brake lever 14, which is made in the form of a fork, covering two friction surfaces 6A and 6b, the movable brake pad 7 can be pressed against opposite the first frictional surface 6A and the fixed brake pad 700 can with the same force is rijumati second friction surface 6b. Thus, the number of structural components of the membrane actuator 60 can be reduced, which reduces the size of the clamping of the brake 1.

The movable brake pad 7 clamping brake 1 is based on the caliper 10 by means of two support fingers 43 and between the support fingers 43 are formed of the pressure chamber 63. Thus, when the support fingers 43 are stretched and compressed in accordance with the stretching of the diaphragm 75, the movable brake pad 7 can be smoothly moved to the first frictional surface 6A and removed from it. In addition, between the support fingers 43 can provide a sufficiently large surface area of the membrane 75, to which is applied the pressure, so the contact force required can be applied to the movable brake pad 7 in wide limits. In this membrane 75 and the guide frame 65 are arranged in such a way that overlap each other in the direction of the X axis, so the items can be placed in the limited space of the brake caliper 10. This avoids increasing the size of the brake caliper 10.

The strip 9 of the movable brake pad 7 has a curved shape corresponding to the first frictional surface 6A and the inner wall 71 of the cylinder is provided with front and rear curved part s and 71d, the shape of which matches the shape of Proclus the key 9, as well as the upper and lower arcuate portion 71A and 71b connected to the front and rear curved portions C and 71d. Thus, in the limited space of the brake caliper 10 can be obtained relatively large surface area of the membrane 75, to which is applied the pressure. In addition, you can exclude bending the peripheral edge 76 of the diaphragm 75, and, consequently, to increase the durability of the membrane 75.

The holder 8, the insulating plate 61 and the piston 55 of the clamping of the brake 1 is located between the movable brake pad 7 and the pressing part 79 of the diaphragm 75, so the transfer of heat from the movable brake pad 7 to the diaphragm 75 can be reliably blocked. This prevents thermal damage to the rubber diaphragm 75.

The back plate 62 of the clamping brake 1 is attached to the holding portion 79, and the stiffness of the contact between the pressing part 79 and the insulating plate 61 is increased, which leads to increasing the strength of the pressing part 79. However, the application of the back plate 62 can be excluded, as shown in Fig.6.

The following describes the second embodiment of the present invention, which illustrate Fig.7 and 8.

As shown in Fig, clamping the brake 1 according to this implementation variant contains the cylinder 80, formed in the first brake lever 12, with two of the covered ends, which replaces the cylinder 70 used in the first variant of realization, and the cover 92 which closes one end of the cylinder 80, forming the bottom part. In the cylinder 80 is a membrane 75.

The cylinder 80 has an inner wall 82, which has an essentially elliptical cross-section and passes in the direction of the X axis, and the annular connecting the support 81, which is formed in a plane defined by the Y-axis and Z-axis for connection with a peripheral edge 76 of the diaphragm 75.

As shown in Fig.7, the cylinder 80, the movable brake pad 7, the cover 92 and the connecting bearing 81 are vertically symmetrical with respect to the Central axis Oz of the brake caliper 10, which runs parallel to the z axis.

In the support 81 with a predetermined interval are formed bolt holes. The cover 92 is attached to the support 81 by bolts 84, screwed into these holes.

The inner wall 82 of the cylinder formed by the front and rear curved portions C and 82d, which bypass the gasket 9 of the movable brake pad 7, and the upper and lower arcuate portions a and 82b, which connect the front and rear curved part s and 82d.

As shown in Fig, the peripheral edge 76 of the membrane 75 is located between the connecting support 81 and the cover 92.

Between the support 81 and the inner wall 82 of the cylinder 80 is formed chamfer 83. the ASKA 83 serves to provide a smooth bending of the membrane 75 from the peripheral edge 76 to the corrugated part 77.

Corrugated portion 77 is bent essentially at 90 degrees around the chamfer 83 from the peripheral edge 76 extends in the direction of the guide frame 65 along the inner wall 82 of the cylinder, and then is bent essentially 180 degrees before pressing part 79. With this design of the membrane 75 inner wall 82 of the cylinder is located outside the pressure chamber 63 in contrast to the inner wall 71 of the cylinder in a first variant implementation.

On the opposite end of the cylinder 80 relative to the cover 92 is formed koltseobraznaya connecting bearing 95, located in front of the wheel 5. To the connecting support bolts 95 96 attached to the guide frame 65.

All other components identical to the components used in the first variant of realization.

In this implementation are provided advantageous effects similar to the first implementation variant.

The following describes the third embodiment of the present invention, which illustrate figures 9 and 10.

This option differs from the second variant of realization of the fact that the holder 8 is removed and the movable brake pad 7 is based directly on the corresponding support fingers 43.

The movable brake pad 7 includes a gasket 9, the configuration of which provides contact with the rotating first frictional surface 6A, building 7a,to which is attached a strip 9, and sientelo part 7b formed on the rear surface of the housing 7a.

The annular groove 86 formed on the outer side surfaces of both the support fingers 43. Edge 85 that are fixed in the grooves 86 of the upper and lower support fingers 43, formed, respectively, at the upper end and the lower end soedinitelnoj part 7b.

By inserting edges in the grooves 85 and 86 of the upper and lower support fingers 43 of the movable brake pad 7 is connected with the first brake lever 12. The support fingers 43 are based on the adjusting device 41 and can be moved forward and backward relative to the first frictional surface 6A. The movable brake pad 7 is coming to the first frictional surface 6A or removed from it in accordance with the expansion/contraction of the diaphragm 75.

In this implementation are provided advantageous effects similar to the second variant of realization.

In addition, in this embodiment, the implementation of the edge 85 of the upper and lower ends soedinitelnoj part 7b of the movable brake pad 7 are based directly on the support fingers 43 thus, during braking, the membrane 75 presses the movable brake pad 7 directly by the piston 55. This allows you to exclude the application of the holder 8, to simplify the design of the clamping of the brake 1 and reduce the size of the brake caliper 10 in the direction of the OS is X.

The content of the patent application Tokugan 2007-265597 registered on October 11, 2007 in Japan, are included in this description.

The present invention is described with reference to some embodiments, however, as described above, the embodiments do not limit the invention. For specialists in the art obvious modification of the above scenarios implementation by making changes within the attached claims.

For example, in the above embodiments of the friction surfaces 6A and 6b formed on both sides of the wheel 5, crimped brake pads 7 and 700. However, the present invention can be used in locking the brake in which the friction surfaces 6A and 6b represent the corresponding surface of the rotating object, which rotates together with the wheel 5, the frictional surface 6A and 6b are located between the brake pads 7 and 700.

INDUSTRIAL APPLICABILITY

As described above, the clamping brake according to the present invention allows to obtain a uniform contact pressure of the brake pads to rotate the object. Thus, the most favorable effect takes place in the case of application of the described clamping brakes for braking the wheels of a railroad car, requiring a large force is regime brake pads.

The embodiments of the present invention, representing objects of exclusive rights set forth in the following claims.

1. The clamping brake (1) of the vehicle, braking the rotation of the rotating object (5) by compression of the first friction surface (6A) and the second friction surface (6b)formed on each side of the specified rotating object (5), containing:
the caliper (10)having a first brake lever (12), which is converted to the first friction surface (6A), and the second brake lever (14), which is converted to the second friction surface (6b);
the movable brake pad (7), which is installed on the first brake lever (12) and applies a braking force to the first friction surface (6A) by moving towards her;
pressure chamber (63)formed in the brake bracket (10), while the first brake lever (12) includes a cylinder (70, 80), which has an internal wall (71, 82);
the membrane (75), which is stretched in accordance with the pressure of the pressure chamber (63), and membrane (75) contains a clamping part (79) to compress the piston, which is in contact with the movable brake Shoe (7) through these pistons (55), and the corrugated portion (77)formed on the periphery of the specified clamping part (79) with capability of moving posledney in the direction of the axis of rotation of the rotating object (5), and a crimped portion (77) is located within the inner walls (71, 82) of the cylinder (70, 80);
pistons (55)that moves the movable brake pad (7) in the direction of the axis of rotation of the rotating object (5) in accordance with the stretching of the membrane (75);
a guiding device (65), guiding the movement of the piston (55) perpendicular to the first friction surface (6A);
the support mechanism (30, 32), which is based brake bracket (10) can move in the direction of the axis of rotation of the rotating object (5); and
stationary brake Shoe (700), which is attached to the second brake lever (14) and applies the braking force to the second friction surface (6b) together with the movable brake Shoe (7) when pressure in the pressure chamber (63).

2. The clamping brake (1) according to claim 1, characterized in that it contains two anchor pins (43)that supports the brake pad (7) can be moved in the direction perpendicular to the first friction surface (6A)and the pressure chamber (63) is formed between the two support fingers (43),

3. The clamping brake (1) according to claim 2, characterized in that it contains:
the spring (44), which moves the abutment finger (43) in a direction opposite to the friction surface (6); and
the adjusting mechanism (45) to adjust the gap, which supports the constant distance between the supporting finger (43) and the first friction surface (6A), if on the movable brake pad (7) is not valid any external force except the force of the spring (44).

4. The clamping brake (1) according to any one of claims 1 to 3, characterized in that the cylinder (70, 80) of the first brake arm (12) has a bottom portion (72, 92), the pressure chamber (63) is formed between the bottom part (72, 92) of the cylinder (70, 80) and the membrane (75),
a guiding device (65) is a guide frame, which can move pistons installed (55), and the inner wall (71, 82), cylinder (70, 80), surrounds the annular connecting support (73, 95), which are attached to the peripheral edge of the frame rail.

5. The clamping brake (1) according to any one of claims 1 to 3, characterized in that it contains a heat-insulating plate (61), which is located between the respective pistons (55) and brake pad (7).

6. The clamping brake (1) according to claim 4, characterized in that the membrane (75) has a peripheral edge (76), which is located between the peripheral edge of the frame rail and the connecting support (73).

7. The clamping brake (1) according to claim 2 or 3, characterized in that it contains a holder (8)for attachment of the movable brake pad (7) to the two reference pins (43).

8. The clamping brake (1) according to any one of claims 1 to 3, characterized in that the movable brake pad (7) contains a gasket (9), which has the shape, rounded in the direction the attachment of rotation of the first friction surface (6), and the cylinder (70) has an essentially elliptical cross-section, curved in accordance with the form of this strip (9).

9. The clamping brake (1) according to any one of claims 1 to 3, characterized in that the movable brake pad (7) contains a gasket (9), which has the shape, rounded in the direction of rotation of the first friction surface (6), and
the cylinder (80) has an essentially elliptical cross-section, which closes the gasket (9).

10. The clamping brake (1) according to claim 4, characterized in that it contains a back plate (62)attached to the rear surface of the holding part (79).

11. The clamping brake (1) according to claim 4, characterized in that the bottom part(72, 92) includes a cover (92)attached to one end of the cylinder (80)and a membrane (75) contains the peripheral edge (81)located between the connecting support (81) membrane formed on one end of the cylinder (80), and cover (92).

12. The clamping brake (1) according to claim 11, characterized in that the cylinder (80) has a chamfer (83)located between the connecting support (81) membrane and the inner wall (82) of the cylinder.

13. The clamping brake (1) according to claim 2 or 3, characterized in that the movable brake pad (7) has two edges (85), directly attached to the two supporting fingers (43).



 

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