Amphibious vehicle steering gear

FIELD: transport engineering.

SUBSTANCE: proposed steering gear of amphibious vehicle has levers arranged in control cabin at working place of driver, and control tie-rods coupled with ground and water-propelled units. Proposed gear is furnished with turning mode selector arranged between said levers and control tie-rods. Turning mode selector is made for changing to control side gearbox distributors when moving over ground and to control rudders of water-propelled units and transmission of increased control force when moving over water. Change-over is provided through summing lever installed on axle under floor of control cabin, traction-and-lever mechanism furnished with hydraulic booster and made for converting translation of tie-rods into rotation of telescopic propeller shaft, and through mechanism to convert rotation of telescopic propeller shaft into translation of cross steering tie-rod. Steering tie-rod is coupled with inner blades of rudders of left-hand and right-hand water-propelled units. Turning mode selector can be made in form of roller clutches with rods coupled by link and installed for axial displacement by means of two-position link with fixing in operating positions by ball stop. Making of telescopic propeller shaft hydraulic system of rudder booster of water-propelled unit and mechanism for converting rotation of telescopic propeller shaft into translation of cross steering tie-rod is shown.

EFFECT: simplified design, improved reliability and operating characteristics of steering gear with possibility of control by levers both when moving over ground and over water.

5 cl, 14 dwg

 

The invention relates to the transport industry, in particular to the creation of the actuator by turning vehicles moving on land and in the water.

Known actuators control the rotation of motor vehicles, such as tanks T-54, T-55 and T-62 (see "Guide material and operation of the T-55 tank", Voenizdat the USSR, M., 1969, str), in which the control force from the levers placed on the workplace of the driver is transmitted through rods on planetary rotation mechanisms associated with airborne transmission of caterpillar tracks.

The disadvantage of this actuator is that management requires the driver's considerable physical effort and causes fatigue when driving.

Known actuators control the rotation of the more modern tanks such as the T-72 tank (see "Object M. Guide material and operation", Voenizdat the USSR, M., 1975, str). The control force from the levers required significantly lower compared with the above-described actuators, as it is transmitted to the distribution mechanisms (Mr), which carry hydraulic control side planetary gearboxes (BKP). The disadvantage of this drive is that it can only be used to control the rotation when driving on su is E.

Known actuators control floating crawler transporters family title (see "journal of engineering and weapons", No. 10, 2001, p.1-9), which were developed and were made using the components and assemblies mentioned tanks, so when moving on land managed a staff levers placed on the workplace of the driver in the control cabin. Management of the conveyor during movement on the water was supplied by two water wheels, placed directly behind the propellers and associated mechanical lever-cable-drive with a steering wheel in front of the driver. The actuator floating crawler Transporter PTS-3 is selected for the prototype.

The disadvantage of this drive is the presence in the workplace of the driver of the two controls of different types of levers and steering wheel, along with the complexity of their convenient placement in the cabin causes difficulties in learning the skills of turns when driving on land and on water. In addition, the cable actuator aft floating means outside the housing for connection with the rudders and not exclude the possibility of tangling and breakage of the various floating objects (logs, ice, etc.) during operation, which reduces the efficiency and reliability of the turning control while driving on the ode.

The present invention is to simplify the design, improving reliability and operational characteristics of the actuator by turning the floating tools with capability control levers as when driving on land and on water.

The problem is solved in that the actuator is equipped with a voter control mode turn placed between the said levers and rods management with the ability to switch: on the control mechanisms for the distribution of on-Board boxes when moving on land, and the motion of the water turning rudders men movers and the transmission of increased control efforts consistently through summing lever mounted on the axis under Polikom cab control, traction lever mechanism is equipped with a hydraulic amplifier and configured to convert linear motion of the rod into rotational movement of the telescopic drive shaft, as well as through the mechanism for converting the rotational motion of the telescopic drive shaft in the forward movement of the tie rod associated with the internal rudder blades left and right men movers.

Voter control mode, the rotation is made in the form of a roller clutch with rods associated rod and installed with the possibility of sewage move using off-the-scenes with fixation in the positions ball stopper.

Telescopic cardan shaft has end portions in the stern and intermediate supports, and the middle part referred to the propeller shaft is made in the form of a pipe and its splined shaft associated with the possibility of axial movement relative to each other.

Hydraulic power steering-men mover includes an electric pumping unit, relay and manual valves, piping, pressure relief and check valves are connected to a single hydraulic system with capability of this electric pump unit as a backup when the main pump hydraulic system floating means and providing protection from the possibility of receiving the working fluid from the pump main system in the hydraulic system of the amplifier of the control.

The mechanism for converting the rotational motion of the telescopic drive shaft into reciprocating movement of the tie rod is made in the form of a chain.

Analysis of the main distinguishing characteristics showed that:

- supply drive voter control mode turn placed between the levers and rods with the ability to switch on the control mechanisms for the distribution of BKP and turning rudders men propulsion, control is dnmi levers as when moving on land, and water, eliminating the use of a steering wheel, which is used in the famous floating vehicles to control the rudders, and facilitate the training of drivers skills turning;

- implementation of voter control mode rotation in the form of roller clutches with rods associated rod and mounted for axial movement provided an opportunity for the driver to easily and reliably switch turning control over land or water by turning the scenes at one of two fixed ball stopper regulations;

- transfer of increased control efforts consistently through summing lever provided an opportunity to use when turning both lever, which, together with supply of the traction lever mechanism hydraulic booster will greatly reduce the effort for steering rudders;

- use telescopic cardan shaft provides the ability to compensate for the change in location of control surfaces for folding and lowering of the loading Board floating vehicle and when changing pitch;

- the use of stern tube bearings provides waterproof output drive shaft out of the housing;

- use mechanism in the form of circuit enables the preobrazovaniya rotational movement of the telescopic drive shaft into reciprocating movement of the tie rod.

The invention is illustrated by drawings, which depict:

- figure 1 is a kinematic diagram (start);

- figure 2 is a kinematic diagram (continued graphic image in figure 1);

- figure 3 - General view from above on the workplace of the driver;

- figure 4 is a longitudinal section through the shaft of the left lever element And Fig 1;

- figure 5 - cross section G-g of figure 4;

- figure 6 - cross section d-D figure 4;

- figure 7 is a longitudinal section through the shaft of the right arm, the element B figure 1;

on Fig - section E-E Fig.7;

- figure 9 - cross section W-W Fig.7;

- figure 10 is a cross - section In figure 3, a view of the summing lever;

- figure 11 is a General top view of the actuator of the steering rudders;

on Fig - hydraulic amplifier circuit rudders men thruster;

on Fig - voter control mode rotation (shown in position control the rotation with BKP when moving on land);

on Fig - voter control mode rotation (shown in position control the rotation using the rotary control surfaces during movement on the water).

Drive control the rotation of the floating vehicle contains the left 1 and right 2 levers rotate (see figure 1, 3), placed in the control cabin in the workplace of the driver.

The left lever rotation 1 key 3 is rigidly connected with the shaft 4 (see figure 4), on which the bearings 5 mounted on in the Lou 6. Both of these shaft bearings 7, 8 secured in the bearings 9, 10. On the shaft 6 can rotate about an axis rigidly fixed to the lever 11, the associated thrust with 12 Mr 13 left of the Bulgarian Communist party (BKP not shown).

Right lever rotation 2 key 14 is rigidly connected with the shaft 15 (see Fig.7), which on bearings 16 mounted on the shaft 17. Both of these shaft bearings 18, 19 secured in the bearings 20, 21. On the shaft 17 can rotate about an axis rigidly fixed to the lever 22, the associated thrust 23 24 Mr right BKP.

Between the levers 1, 2 are placed voter control mode turn, contains the following elements.

Inside the walls 4, 6 and 15, 17 are installed with the possibility of axial movement by two rod 25, 26 and 27, 28 interconnected by means of a threaded connection. The rods 26 and 27 are interconnected by a rod 29 with scenes switch 30. The kinematic relationship between the elements is provided by roller clutches (see figure 5, 6, 8, 9): in the shafts 4, 6, 15, 17 made two holes placed in them by the rollers 31 and the shafts 4 and 15 - cylindrical grooves with the possibility of placing them in these videos. On the shafts 4, 15 set the levers 32, 33, which rods 34, 35 are connected with the summing lever 36 mounted on the axis under Polikom the cab (see figure 10). The levers 32, 33 is cylindrical groove that interacts with the rollers 31, and with protivopolozhnoi side of these grooves are pushers 37 spring 38. On the rods 25, 26, 27, 28 made grooves "To" with the possibility of placement of the rollers 31 and one side of each of these grooves is placed obliquely to the axis of the rod. To commit voter control mode in the positions is a ball stopper, comprising the ball 39, the spring ring 40 and two grooves "L", performed on the rod 26 with the opportunity to interact with the specified bulb.

Summarizing the lever 36 is connected with the traction lever mechanism is equipped with a hydraulic amplifier and comprises the following elements (see figure 2, 11).

A longitudinal rod 41, two shoulders lever 42, the transverse rod 43, provided with a control valve 44, the actuating cylinder 45 and lever 46, is arranged to convert the translational motion of the mentioned rods and rod actuating cylinder into rotational movement of the telescopic drive shaft 47. The hydraulic system of the amplifier of the control men propulsors (see Fig), which is associated with the main hydraulic system of floating tools included electric pump unit 48, the relay 49 dispenser, reverse 50 and pressure relief valves 51 and pipelines.

Telescopic cardan shaft 47 has end portions in the stern 52 and intermediate 53 supports. The middle part of the said propeller shaft is made in the form of a pipe 54 is placed in her splined shaft 55, associated with the possibility of axial movement relative to each other.

The mechanism 56 connects the drive shaft 47 with lateral steering thrust 57 and can be made in the form of a chain, with the possibility of conversion of the rotational movement of the shaft 47 in the forward movement of the thrust 57 associated with the inner feathers 58 rudder left and right men movers 59. The inner feathers 58 connected with the outer feathers rods 60 and 61.

Work

The actuator rotation occurs in two modes: when motion floating facilities on land and on water.

When moving on land, the connecting rod 30 is in the right position (see Fig), the rollers 31 connects the shaft 4 to the shaft 6 (see figure 5), and the shaft 15 to the shaft 17 (see Fig). The mechanic-driver acts on the levers 1, 2, rotates the shafts 6, 17, the levers 11, 22 and rods 12, 23 passes control to the left 13 and right 24 Mr BKP, controls the rotation in the desired direction. The arms 32, 33 do not have a rigid connection with the levers 1, 2 and the steering handlebars no effect.

When moving through the water, the mechanic-driver translates the connecting rod 30 voter control mode in left position (see Fig), the rods 25. 26, 27, 28 by means of rod 29 is moved to the left and fixed ball 39 in the corresponding groove "L", while the rollers 31 of the plungers 37 are moved in the groove of the rods 25, 26 and the rods 26, 27 of the inclined wall of the groove "To" move ro is IKI 31 in position, providing a rigid connection of the levers 1, 2 levers 32, 33 and next - rods 34, 35 and summing lever 36. Draft 41 the control effort through two shoulders lever 42 is transmitted to the transverse rod 43 and the control valve 44. Depending on the direction of thrust 43, the control valve 44 moves and directs the working fluid in the corresponding cavity of the Executive hydraulic cylinder 45. This relief valve 51 maintains davleniya in the hydraulic system of the amplifier and protects against overloads. Rod 43 and the hydraulic cylinder 45, each through his shoulder, acting on a lever 46, which tells the rotational movement of the shaft 47. The mechanism 56 imparts translational motion of the deadlift 57, which rotates the inner feathers 58 rudders and synchronously with them rods 61 - exterior feathers of 60.

Electric pump unit 48 in the normal mode feeds the working fluid of the hydraulic system of the amplifier of the control men movers. When broken main hydraulic pump electric pump unit 48 operates as a backup for consumers the main hydraulic system of the vehicle. To do this on command from a remote driver relay hydraulic valve 49 switches operation of the electric pump unit 48 to the hydraulic system of the amplifier to the main hydraulic system is at, and the check valve 50 is connected with the provision of the possibility of such a mode of operation and at the same time, providing protection from the possibility of postupenia working fluid from the pump main system in the hydraulic system of the amplifier of the control.

Telescopic cardan shaft 47 compensates for changing the location of the rudders when folding and lowering of the loading Board floating vehicle and when the change of trim due to the axial movement of the shaft 55 relative to the tube 54 through the slots.

If you need to operate on land mechanic-driver returns the connecting rod 30 to the right position.

Thus the application of the proposed technical solution is achieved the task of the invention: provides a simplified design, improved reliability and operational characteristics of the actuator by turning the floating tools.

1. Drive control the rotation of the floating vehicle containing the levers placed in the control cabin in the workplace of the driver, and traction control associated with terrestrial and men thrusters, characterized in that the actuator is equipped with a voter control mode turn placed between the said levers and rods of the control switch on the control mechanisms for the distribution of airborne transmission in which the movement by land, and the motion of the water on the pivoting rudders men movers and the transmission of increased control efforts consistently through summing lever mounted on the axis under Polikom cab control, traction lever mechanism is equipped with a hydraulic amplifier and configured to convert linear motion of the rod into rotational movement of the telescopic drive shaft, as well as through the mechanism for converting the rotational motion of the telescopic drive shaft into reciprocating movement of the tie rod associated with the internal rudder blades left and right men movers.

2. The actuator according to claim 1, characterized in that the voter control mode, the rotation is made in the form of a roller clutch with rods associated rod and mounted for axial movement with off-the-scenes with fixation in the positions ball stopper.

3. The actuator according to claim 1, characterized in that the telescopic cardan shaft has end portions in the stern and intermediate supports, and the middle part referred to the propeller shaft is made in the form of a pipe and its splined shaft associated with the possibility of axial movement relative to each other.

4. The actuator according to claim 1, characterized in that the hydraulic is the cue amplifier rudders men mover includes an electric pumping unit, relay and manual valves, piping, pressure relief and check valves are connected to a single hydraulic system with capability of this electric pump unit as a backup when the main pump hydraulic system floating means and providing protection from the possibility of receiving the working fluid from the pump main system in the hydraulic system of the amplifier of the control

5. The actuator according to claim 1, characterized in that the mechanism for converting the rotational motion of the telescopic drive shaft into reciprocating movement of the tie rod is made in the form of a chain.



 

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