Single-tube shock absorber

FIELD: transport engineering; suspensions of vehicles.

SUBSTANCE: proposed single-tube shock absorber contains housing with hydraulic space filled with working fluid, guide bushing, rod and piston stationary installed on rod and dividing hydraulic space into upper and lower parts. Hollow compensator made of elastic material is installed in lower part of hydraulic space. Constant head of compensator is realized owing to elasticity of compensator, or its constant force action onto working fluid in hydraulic space are preset in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod located in hydraulic space of shock absorber.

EFFECT: improved reliability and sensitivity of shock absorber.

1 dwg

 

The invention relates to a transport machine-building, namely the suspension of vehicles.

Similar is the hydraulic shock absorber [1], having a housing with a hydraulic chamber filled with working fluid, the guide sleeve, the shaft and rigidly mounted on it working piston dividing the hydraulic cavity on the upper and lower parts, as well as the compensation cavity, which contains the working fluid and nylon bag with prisoners in its cavity gas. Compensation occur when the shock absorber changes in the volume part of the rod in the cylinder, is carried out in the similar due to the change in the volume of gas in the bag.

As disadvantages of analogue should be noted, first, low energy consumption due to the presence of compensating hydraulic cavity, not involved in the conversion of mechanical energy of vibrations of the vehicle in the internal energy of the working fluid and, secondly, insufficient functioning of the shock absorber due to low gas pressure in a nylon bag.

The prototype of the claimed invention is a Monotube shock absorber [2], comprising a housing with a hydraulic chamber filled with working fluid, the guide sleeve, the shaft and rigidly mounted on it working piston, R is deleuse hydraulic cavity on the upper and lower parts, and the gas cavity and the piston separator, separating it from the hydraulic cavity.

Compared with similar [1] prototype [2] has a higher energy content, due to the absence of special compensation chamber, and better functioning in connection with the use of relatively high pressure gas. However, the high pressure gas in the prototype is achieved by specifying a certain filling gas pressure and the decrease of the gas in the shock absorber Assembly before filling the working fluid. Volume reduction in several times (up to ten)occurring at the same time, makes it impossible to use the bag as a tank of gas. In this regard, for the separation of gas and hydraulic cavities in the prototype is installed movable piston separator. And although its progress is negligible (typically less than one tenth stroke of the working piston), in the process, the piston separator due to intense friction on the inner surface of the housing of the shock absorber wear out, causing a breakdown of the insulation of the gas cavity. Violation isolation leads to rejection of the shock absorber, manifested in the reduction of the resistance forces. The friction between the piston separator and the housing of the shock absorber also reduces its sensitivity.

The technical task of the claimed invented the I is to improve the reliability and sensitivity of the shock absorber by refraining from the use of gas for compensation of volume change of the part of the stem, located in the hull.

The technical problem is solved in that in the lower part of the hydraulic cavity has a hollow compensator made of an elastic material, a permanent backwater which implemented owing to the elasticity of the compensator, or a constant force on the working fluid in the hydraulic cavity is set during Assembly of the shock absorber, and the volume compensator is reduced by an amount equal to the increase in the portion of the rod located in the hydraulic cavity absorber.

The drawing shows a General view of a Monotube shock absorber.

Monotube shock absorber includes a housing 1 with a hydraulic chamber filled with working fluid, the guide sleeve 2 and the shaft 3. It still has a working piston 4. The latter divides the hydraulic cavity 5 is filled with the working fluid on the top and bottom. In the lower part of the hydraulic cavity has a hollow compensator 6, made of an elastic material.

Permanent backwater implemented due to the elasticity of the compensator, or a constant force on the working fluid is set during Assembly of the shock absorber. This apparatus eliminates the phenomenon of cavitation at high speeds of the piston and provides full output shaft with no load./p>

The shock absorber works as follows. Under compression, with the beginning of the movement of the working piston 4 downward, the pressure of the working fluid in the lower part of the hydraulic cavity 5 increases. The pressure force acting on the compensator 6, compresses it. The volume compensator is reduced by an amount equal to the increase in part stem 3, located in the hydraulic cavity 5. At the end, with the beginning of the movement of the working piston 4 upward, the pressure of the working fluid in the lower part of the hydraulic cavity 5 is reduced. The pressure force acting on the compensator 6, is reduced. Due to its elasticity it increases in volume. The latter increases by an amount equal to the decrease part of the stem 3, located in the hydraulic cavity 5.

Comparative analysis of the prototype shows that the inventive device is characterized by the fact that the basis of its design and operation is installed in the lower part of the hydraulic cavity of the hollow compensator made of an elastic material, a permanent backwater which implemented owing to the elasticity of the compensator, or a constant force on the working fluid in the hydraulic cavity is set during Assembly of the shock absorber, and the volume compensator is reduced by an amount equal to the increase in the portion of the rod located in the hydraulic cavity amortize the ora.

The above characteristics allow to draw a conclusion on the compliance of the claimed invention, the criterion of “novelty”.

Existing technologies engineering and applied therein allow you to organize industrial production and equipment vehicles Monotube dampers.

Sources of information

1. Th. Rimpel. The chassis of the vehicle. Shock absorbers, tires and wheels. M.: Mashinostroenie, 1986, p.24, RIS (similar).

2. U.S. patent No. 4418802, CL F 16 F 9/34, 1983 (prototype).

Monotube shock absorber, comprising a housing with a hydraulic chamber filled with working fluid, the guide sleeve, the shaft and rigidly mounted therein, the piston dividing the hydraulic cavity on the upper and lower part, characterized in that the lower part of the hydraulic cavity has a hollow compensator made of an elastic material, a permanent backwater which implemented owing to the elasticity of the compensator, or a constant force on the working fluid in the hydraulic cavity is set during Assembly of the shock absorber, and the volume compensator is reduced by an amount equal to the increase in the portion of the rod located in the hydraulic cavity absorber.



 

Same patents:

FIELD: mechanical engineering.

SUBSTANCE: hydraulic vibration insulation support comprises flexible pressure-tight chamber which is filled with damping fluid and separated into spaces interconnected through throttling ports. The pressure-tight chamber is made of a central disk-shaped space provided with an area for setting an object to be insulated and peripheral ring spaces oriented concentrically with respect to the central space and connected with it through the radial passage from one side of the central space. The throttling ports are made in pair from the opposite sides of the radial passage at the site of its intersection with each ring space. The throttling ports are provided with valves which allow the fluid to flow in opposite directions from the side of the radial passage for each of the pair of the throttling ports.

EFFECT: simplified manufacturing, reduced cost and enhanced reliability.

2 dwg

FIELD: transport machine engineering, namely shock absorbing apparatuses.

SUBSTANCE: shock absorbing apparatus includes housing, rod, piston, secured to rod end and cylinder arranged between housing and piston. There are flow-through valves in cylinder; said valves are in the form of two openings mutually communicated by means of trough. Piston may move along the whole height of cylinder for operation of several flow-through valves. Change of summed diameters of said openings provides variable rigidity factor of shock-absorbing apparatus.

EFFECT: possibility for setting rigidity factor of shock absorbing apparatus depending upon technological demands.

2 cl, 2 dwg

FIELD: hydraulic shock absorbers.

SUBSTANCE: viscous friction damper includes housing, partition with openings and rod passing through central opening of partition. Two similar corrugations of elastic material are fastened in housing; central partition is clamped between said corrugations. The last define two different-volume and variable-dimension cavities filled with shock absorbing liquid. Rod has two sites for fluid-tight securing of it to said two corrugations. Openings of partition through which shock-absorbing liquid is pressed are covered by means of flexible membrane providing possibility for controlling their number and size.

EFFECT: enlarged manufacturing possibilities, improved efficiency of shock absorber.

1 dwg

Hydraulic damper // 2247269

FIELD: mechanical engineering.

SUBSTANCE: hydraulic damper comprises piston provided with axial passages and working cylinder filled with fluid. The piston is connected with the rod. The inner side of the cylinder and outer side of the cylinder, which is in a contact with the piston side, are provided with thread. The piston is mounted on the rod for permitting rotation around the rod. The piston is provided with radial passages whose longitudinal axes intersect with the longitudinal axes of the axial passages of the piston. The diameters of the axial passages decrease from the longitudinal axis of symmetry of the piston to its periphery. The radial passages receive movable spring-loaded slide valves whose diameters exceed these of axial passages of the piston.

EFFECT: expanded functional capabilities.

3 dwg

The invention relates to the building, namely the structural elements of the damper

Hydraulic damper // 2234013
The invention relates to the field of mechanical engineering

Hydraulic damper // 2230241
The invention relates to mechanical engineering and can be used in the construction of various transport equipment

The invention relates to the transport industry, in particular for hydraulic structures supports the suspension of the power unit of the vehicle

The invention relates to mechanical engineering and can be used as a bearing of the turbocharger rotor aircraft and industrial engines

The invention relates to mechanical engineering and can be used, for example, in the various mechanisms that require smooth stop working body, especially heavy-duty

FIELD: transport engineering; suspensions of vehicles.

SUBSTANCE: proposed single-tube shock absorber contains housing with hydraulic space filled with working fluid, guide bushing, rod and piston stationary installed on rod and dividing hydraulic space into upper and lower parts. Hollow compensator made of elastic material is installed in lower part of hydraulic space. Constant head of compensator is realized owing to elasticity of compensator, or its constant force action onto working fluid in hydraulic space are preset in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod located in hydraulic space of shock absorber.

EFFECT: improved reliability and sensitivity of shock absorber.

1 dwg

FIELD: transport engineering; vehicle suspensions.

SUBSTANCE: proposed single-tube shock absorber has housing with hydraulic space filled with working fluid, guide bushing, rod and piston fixed on rod and dividing hydraulic space into upper and power parts. Flexible compensator made of microcellular material is installed in lower part of hydraulic space. Constant head of compensator realized owing to elasticity of compensator or its constant power action onto working fluid in hydraulic space are set in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod in hydraulic space of shock absorber.

EFFECT: improved reliability and sensitivity of shock absorber.

1 dwg

FIELD: transportation.

SUBSTANCE: heavy trailer (10) with a plurality of wheels (12) is designed with independent McPherson wheel suspension (16). Wheel suspension (16) includes a brake cylinder (36) which is adjacent to unit (24) of the piston cylinder, and its free end is facing upward. The hinge bolt of lateral lever (30) of wheel suspension (16) is located on trailer frame (14) under bucket platform (34) or trailer central tubes (10). When making lateral levers (30l, 30r) of suspension of two opposite to each other in the lateral direction (Q) trailer wheels (12l, 12r) in the form of triangular lateral suspension levers, the hindge bolts of free arm ends (82l, 84l, 82l, 84r) of triangular lateral suspension levers (30l, 30r) are arranged so that one of arms (84l, 82r) of both triangular lateral levers (30l, 30r) with its free end comes between both arms (82l, 84r, 82l, 84l) of another triangular lateral suspension lever (30r, 30l).

EFFECT: possibility of a compact placement of the independent wheel suspension components in a limited space.

31 cl, 14 dwg

Hydraulic damper // 2247269

FIELD: mechanical engineering.

SUBSTANCE: hydraulic damper comprises piston provided with axial passages and working cylinder filled with fluid. The piston is connected with the rod. The inner side of the cylinder and outer side of the cylinder, which is in a contact with the piston side, are provided with thread. The piston is mounted on the rod for permitting rotation around the rod. The piston is provided with radial passages whose longitudinal axes intersect with the longitudinal axes of the axial passages of the piston. The diameters of the axial passages decrease from the longitudinal axis of symmetry of the piston to its periphery. The radial passages receive movable spring-loaded slide valves whose diameters exceed these of axial passages of the piston.

EFFECT: expanded functional capabilities.

3 dwg

FIELD: hydraulic shock absorbers.

SUBSTANCE: viscous friction damper includes housing, partition with openings and rod passing through central opening of partition. Two similar corrugations of elastic material are fastened in housing; central partition is clamped between said corrugations. The last define two different-volume and variable-dimension cavities filled with shock absorbing liquid. Rod has two sites for fluid-tight securing of it to said two corrugations. Openings of partition through which shock-absorbing liquid is pressed are covered by means of flexible membrane providing possibility for controlling their number and size.

EFFECT: enlarged manufacturing possibilities, improved efficiency of shock absorber.

1 dwg

FIELD: transport machine engineering, namely shock absorbing apparatuses.

SUBSTANCE: shock absorbing apparatus includes housing, rod, piston, secured to rod end and cylinder arranged between housing and piston. There are flow-through valves in cylinder; said valves are in the form of two openings mutually communicated by means of trough. Piston may move along the whole height of cylinder for operation of several flow-through valves. Change of summed diameters of said openings provides variable rigidity factor of shock-absorbing apparatus.

EFFECT: possibility for setting rigidity factor of shock absorbing apparatus depending upon technological demands.

2 cl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: hydraulic vibration insulation support comprises flexible pressure-tight chamber which is filled with damping fluid and separated into spaces interconnected through throttling ports. The pressure-tight chamber is made of a central disk-shaped space provided with an area for setting an object to be insulated and peripheral ring spaces oriented concentrically with respect to the central space and connected with it through the radial passage from one side of the central space. The throttling ports are made in pair from the opposite sides of the radial passage at the site of its intersection with each ring space. The throttling ports are provided with valves which allow the fluid to flow in opposite directions from the side of the radial passage for each of the pair of the throttling ports.

EFFECT: simplified manufacturing, reduced cost and enhanced reliability.

2 dwg

FIELD: transport engineering; suspensions of vehicles.

SUBSTANCE: proposed single-tube shock absorber contains housing with hydraulic space filled with working fluid, guide bushing, rod and piston stationary installed on rod and dividing hydraulic space into upper and lower parts. Hollow compensator made of elastic material is installed in lower part of hydraulic space. Constant head of compensator is realized owing to elasticity of compensator, or its constant force action onto working fluid in hydraulic space are preset in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod located in hydraulic space of shock absorber.

EFFECT: improved reliability and sensitivity of shock absorber.

1 dwg

FIELD: transport engineering; vehicle suspensions.

SUBSTANCE: proposed single-tube shock absorber has housing with hydraulic space filled with working fluid, guide bushing, rod and piston fixed on rod and dividing hydraulic space into upper and power parts. Flexible compensator made of microcellular material is installed in lower part of hydraulic space. Constant head of compensator realized owing to elasticity of compensator or its constant power action onto working fluid in hydraulic space are set in process of assembling of shock absorber. Volume of compensator is reduced by value equal to increase of volume of part of rod in hydraulic space of shock absorber.

EFFECT: improved reliability and sensitivity of shock absorber.

1 dwg

FIELD: air hydraulic shock absorbers of chassis of transport facilities.

SUBSTANCE: the air hydraulic shock absorber consists of a cylinder, rod, plunger, movable and fixed axle boxes, hydraulic seals, gas and hydraulic chambers and a profiled needle. The shock absorber is equipped with an optimizing hydraulic double-stage regulator consisting of an internal bush with holes that is attached to the wall separating two spaces in the hydraulic chamber and linked with the plunger of the air hydraulic shock absorber fitted onto which is an external bush with holes with possibility of movement relative to the internal bush. Both bushes are interconnected by a multistart thread with a helix angle exceeding the friction angle, they are also connected by a flexible component. The profiled needle connected to the rod of the air hydraulic shock absorber enters the hole in the external bush of the optimizing hydraulic hydraulic double-stage regulator.

EFFECT: simplified design, provided stability of the dynamic characteristics at direct and reverse motions.

3 dwg, 1 tbl

FIELD: machine building, applicable for suppression of vibrations of various objects.

SUBSTANCE: the hydraulic vibration support has a body filled with fluid with foundations movable in axial direction, with a cylindrical damping member installed between them spring-loaded from two sides by shaped coil springs. The damping member is furnished with blades fastened on the side surface. Each shaped coil spring is made of tapered and cylindrical parts. The springs positioned on both sides from the damping member are coiled to opposite sides and rigidly fastened to the latter by their cylindrical components with the aid of screw stoppers screwed on the ends of the damping member.

EFFECT: enhanced intensity of energy dissipation.

2 dwg

Up!