Hydraulic oil cylinder support for industrial vehicle cab

Abstract

The utility model discloses a hydraulic oil cylinder support for an industrial vehicle cab. The hydraulic oil cylinder support comprises a connecting pin shaft, a radial buffering connecting assembly and a buffering assembling mechanism. The radial buffering connecting assemblies are fixedly assembled at the two ends of the connecting pin shaft, each radial buffering connecting assembly comprises a pin shaft assembling frame, and an assembling buffering sliding block is fixedly assembled on the side, away from the connecting pin shaft, of each pin shaft assembling frame. And the pair of buffer assembly mechanisms is fixedly assembled on the two sides of the connecting pin shaft, each buffer assembly mechanism comprises a buffer assembly support, the buffer assembly supports are assembled on the outer sides of the assembly buffer sliding blocks in a sliding mode, and limiting guide rods are fixedly connected into the buffer assembly supports. According to the hydraulic oil cylinder support for the industrial vehicle cab, due to the fact that the buffering assembly support is arranged, the hydraulic oil cylinder can be buffered and limited, the situation that the hydraulic oil cylinder support is broken and damaged due to the fact that the hydraulic oil cylinder support is affected by instantaneous acting force in the using process is reduced, and the using stability and reliability of the hydraulic oil cylinder support are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinder supports for vehicle cabs, and in particular relates to a hydraulic cylinder support for industrial vehicle cabs. Background Art

[0002] A hydraulic cylinder is a type of hydraulic actuator that converts hydraulic energy into mechanical energy and performs reciprocating linear motion. A hydraulic cylinder support is a component used to limit the assembly of a hydraulic cylinder. A vehicle cab hydraulic cylinder support is a hydraulic cylinder support used to limit the assembly of a vehicle cab support cylinder. The hydraulic cylinder is assembled between the driver's seat and the frame through the hydraulic cylinder support. When the hydraulic cylinder raises or lowers the cab, the force acting on the cab acts on the hydraulic cylinder support through the hydraulic cylinder, and the hydraulic cylinder support transmits the force to the frame.

[0003] Currently, the common hydraulic cylinder support is mainly composed of two parts: an integrated support and an assembly pin. When in use, the integrated support is generally fixed to the vehicle frame by bolt assembly or welding, and the hydraulic cylinder is limited by the assembly pin.

[0004] Most of the common hydraulic cylinder supports in the prior art do not have a buffering function, which makes it easy for the hydraulic cylinder supports used in the vehicle cab to receive a large force when the hydraulic cylinder is started, especially for industrial vehicle cabs that are heavy and have high application requirements. When the hydraulic cylinder supports are used under the cabs of such vehicles, the hydraulic cylinder supports are easily affected by the instantaneous force and may be broken and damaged, resulting in poor stability and reliability in the use of the hydraulic cylinder supports.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a hydraulic cylinder support for an industrial vehicle cab.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0007] The utility model aims to provide a hydraulic cylinder support for an industrial vehicle cab, which can reduce the instantaneous force applied to the hydraulic cylinder support during use and improve the use stability and reliability of the hydraulic cylinder support.

[0008] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a hydraulic cylinder support for an industrial vehicle cab, comprising: a connecting pin, a pair of radial buffer connection components, and a pair of buffer assembly mechanisms.

[0009] A pair of radial buffer connection assemblies are fixedly assembled at both ends of the connecting pin shaft, and the radial buffer connection assembly includes a pin shaft assembly frame, and the pin shaft assembly frame is fixedly assembled at the end of the connecting pin shaft. The pin shaft assembly frame is fixedly assembled with an assembly buffer slider on the side away from the connecting pin shaft, and multiple groups of evenly distributed radial support plates are connected in the assembly buffer slider.

[0010] A pair of buffer assembly mechanisms are fixedly assembled on both sides of the connecting pin shaft, and the buffer assembly mechanism includes a buffer assembly support, and the buffer assembly support is slidably assembled on the outside of the assembly buffer slider. A limiting guide rod is fixedly connected inside the buffer assembly support, and the limiting guide rod passes through the assembly buffer slider. A pair of annular buffer air cylinders are fixedly connected to the inner wall of the buffer assembly support, and the pair of annular buffer air cylinders are symmetrically distributed on both sides of the assembly buffer slider, and support rings are slidably assembled inside the pair of annular buffer air cylinders.

[0011] In one or more embodiments of the utility model, the pin assembly frame is provided with an assembly avoidance hole matched with the connecting pin. The assembly avoidance hole is provided to facilitate plug-in assembly of the connecting pin. Multiple sets of fixing bolts are fixedly connected between the pin assembly frame and the assembly buffer slider. The pin assembly frame and the assembly buffer slider are connected and fixed by multiple sets of fixing bolts.

[0012] In one or more embodiments of the utility model, a sliding buffer hole is bored in the assembly buffer slider, and the limiting guide rod is inserted in the sliding buffer hole. The limiting guide rod is inserted into the sliding and punching hole so that the limiting guide rod can assemble and slide limit the assembly buffer slider. Multiple groups of uniformly distributed limiting protrusions are integrally formed on the inner wall of the sliding buffer hole. It is convenient to radially slide limit the limiting guide rod through multiple groups of limiting protrusions.

[0013] In one or more embodiments of the utility model, multiple groups of the limiting protrusions are staggered with the radial support plates, and radial sliding gaps are formed between the multiple groups of the radial support plates and the assembly buffer slider. It is convenient to play a role of radial sliding limiting on the connecting pin shaft by sliding the radial support plate in the radial sliding gap. A plurality of evenly distributed elastic connecting blocks are arranged in the radial sliding gap. The assembly buffer slider and the radial support plate are connected and limited by the plurality of elastic connecting blocks. At the same time, the radial support plate can play a role of radial elastic limiting on the limiting guide rod by compressing the plurality of elastic connecting blocks by the radial support plate.

[0014] In one or more embodiments of the utility model, a fixed base plate is fixedly connected to the side of the buffer assembly support away from the connecting pin. The buffer assembly support is assembled and fixed by the fixed base plate. A plurality of evenly distributed assembly and fixing holes are drilled on the fixed base plate. The assembly and fixing holes are drilled to facilitate the assembly and fixing of the fixed base plate, thereby facilitating the assembly and fixing of the buffer assembly support.

[0015] In one or more embodiments of the utility model, a pair of locking bolts are fixedly connected between the limit guide rod and the buffer assembly support, and the limit guide rod and the buffer assembly support are assembled and fixed by the pair of locking bolts.

[0016] In one or more embodiments of the utility model, a pair of the inner walls of the annular buffer cylinders are provided with a plurality of evenly distributed conical slow-flow exhaust holes, and the diameter of the conical slow-flow exhaust holes located inside the annular buffer cylinder is greater than the diameter outside the annular buffer cylinder. By providing the conical slow-flow exhaust holes, when the annular buffer cylinder is compressed, the gas in the compression buffer cavity can be slowly discharged along the conical slow-flow exhaust holes, thereby playing a role of buffering and limiting the sealing compression ring.

[0017] In one or more embodiments of the utility model, a pair of sealing compression rings are slidably mounted in the annular buffer cylinders, and the sealing compression rings are fixedly connected to one side of the support ring located in the annular buffer cylinder. The sealing compression rings support and fix the support rings, and at the same time, the compression buffer cavity is compressed by the sealing compression rings sliding in the annular buffer cylinder. The sealing compression rings cooperate with the annular buffer cylinder to form a compression buffer cavity, and a reset spring is arranged in the compression buffer cavity. The sealing compression rings are supported and reset by the contraction and reset of the reset springs.

[0018] In one or more embodiments of the utility model, a support ring is fixedly connected to one side of the support ring outside the annular buffer cylinder, and the support ring plays a role of supporting and limiting the assembly buffer slider.

[0019] In one or more embodiments of the utility model, a pair of buffer air cushions are fixedly connected to the outside of the annular buffer air cylinder. The contraction and expansion of the pair of buffer air cushions play a role in buffering and auxiliary limiting the assembly buffer slider. A pair of the buffer air cushions and the annular buffer air cylinder are fixedly connected with a conductive air pipe, and the conductive air pipe is connected to the compression buffer chamber. The conductive air pipe plays a role in connecting the buffer air cushion and the annular buffer air cylinder, so that the gas in the compression buffer chamber can be transported to the annular buffer air cylinder along the conductive air pipe under the action of the sealing compression ring, thereby controlling the expansion and contraction state of the annular buffer air cylinder.

[0020] Compared with the prior art, the utility model provides a hydraulic cylinder support for an industrial vehicle cab, which can play a buffering and limiting role for the hydraulic cylinder by setting a buffering assembly support, thereby reducing the possibility of breakage and damage of the hydraulic cylinder support caused by instantaneous force during use, and improving the stability and reliability of the hydraulic cylinder support. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A three-dimensional diagram of a hydraulic cylinder support for an industrial vehicle cab in one embodiment of the utility model;

[0023] Figure 2 It is a partial structural stereogram of a hydraulic cylinder support for an industrial vehicle cab in one embodiment of the utility model;

[0024] Figure 3 It is a side cross-sectional view of a hydraulic cylinder support for an industrial vehicle cab in one embodiment of the utility model;

[0025] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle;

[0026] Figure 5 for Figure 3 Schematic diagram of the structure at B in the middle;

[0027] Figure 6 A three-dimensional diagram of an assembly of a buffer slider in an embodiment of the utility model;

[0028] Figure 7 for Figure 6 Schematic diagram of the structure at point C in the middle.

[0029] Description of main reference numerals:

[0030] 1-connecting pin, 2-radial buffer connection assembly, 201-pin assembly frame, 202-assembly buffer slider, 203-radial support plate, 204-fixing bolt, 205-limiting protrusion, 206-elastic connecting block, 3-buffer assembly mechanism, 301-buffer assembly support, 302-limiting guide rod, 303-annular buffer air cylinder, 304-support ring, 305-fixed base plate, 306-locking bolt, 307-sealing compression ring, 308-reset spring, 309-support ring, 310-buffer air cushion, 311-ventilation pipe. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] like Figures 1 to 7 As shown, a hydraulic cylinder support for an industrial vehicle cab in one embodiment of the utility model comprises: a connecting pin 1, a pair of radial buffer connection components 2, and a pair of buffer assembly mechanisms 3.

[0033] like Figure 1 to Figure 2 As shown, a pair of radial buffer connection components 2 are fixedly assembled at both ends of the connection pin shaft 1. The radial buffer connection components 2 play the role of assembly limit and radial sliding of the connection pin shaft 1. The radial buffer connection components 2 include a pin shaft assembly frame 201, and the pin shaft assembly frame 201 is fixedly assembled at the end of the connection pin shaft 1. The pin shaft assembly frame 201 plays the role of assembly and fixing the connection pin shaft 1.

[0034] like Figures 1 to 4 As shown, a side of the pin assembly frame 201 away from the connecting pin 1 is fixedly assembled with an assembly buffer slider 202. The assembly buffer slider 202 plays the role of supporting, fixing and radial buffering and limiting the pin assembly frame 201.

[0035] like Figures 3 to 7 As shown, multiple groups of evenly distributed radial support plates 203 are connected to the assembly buffer slider 202. The limiting guide rod 302 is supported and limited by multiple groups of radial support plates 203. At the same time, the radial buffer connection assembly 2 can be radially buffered and limited by the radial support plates 203 sliding radially.

[0036] Specifically, the pin assembly frame 201 is provided with an assembly avoidance hole matched with the connecting pin 1. The assembly avoidance hole is provided to facilitate plug-in assembly of the connecting pin 1.

[0037] like Figure 2 As shown, a plurality of sets of fixing bolts 204 are fixedly connected between the pin assembly frame 201 and the assembly buffer slide block 202. The pin assembly frame 201 and the assembly buffer slide block 202 are connected and fixed by the plurality of sets of fixing bolts 204.

[0038] It is worth noting that a sliding buffer hole is bored in the assembly buffer slider 202, and the limiting guide rod 302 is inserted in the sliding buffer hole. The limiting guide rod 302 is inserted into the sliding and punching hole so that the limiting guide rod 302 assembles and slides the assembly buffer slider 202.

[0039] like Figure 6 to Figure 7 As shown, multiple groups of uniformly distributed limiting protrusions 205 are integrally formed on the inner wall of the sliding buffer hole, so as to facilitate radial sliding limiting of the limiting guide rod 302 through the multiple groups of limiting protrusions 205 .

[0040] Specifically, the plurality of limit protrusions 205 and the radial support plates 203 are staggered, and radial sliding gaps are formed between the plurality of radial support plates 203 and the assembly buffer slider 202. The radial support plates 203 slide in the radial sliding gaps to limit the radial sliding of the connecting pin shaft 1.

[0041] like Figure 3 to Figure 4 As shown, a plurality of evenly distributed elastic connection blocks 206 are arranged in the radial sliding gap. The assembly buffer slider 202 and the radial support plate 203 are connected and limited by the plurality of elastic connection blocks 206. At the same time, the radial support plate 203 compresses the plurality of elastic connection blocks 206 so that the radial support plate 203 can play a role of radial elastic limiting on the limiting guide rod 302.

[0042] like Figures 3 to 5 As shown, a pair of buffer assembly mechanisms 3 are fixedly assembled on both sides of the connecting pin shaft 1. The buffer assembly mechanism 3 plays the role of assembly fixing and buffer limiting for the assembly buffer slider 202.

[0043] like Figures 2 to 5 As shown, the buffer assembly mechanism 3 includes a buffer assembly support 301, and the buffer assembly support 301 is slidably assembled on the outer side of the assembly buffer slider 202. The assembly buffer slider 202 is assembled and slidably limited by the buffer assembly support 301.

[0044] like Figure 1 to Figure 2As shown, a fixed bottom plate 305 is fixedly connected to the side of the buffer assembly support 301 away from the connecting pin shaft 1. The buffer assembly support 301 is assembled and fixed by the fixed bottom plate 305.

[0045] Preferably, a plurality of evenly distributed assembly fixing holes are drilled on the fixed bottom plate 305. The assembly fixing holes are drilled to facilitate assembly and fixing of the fixed bottom plate 305, thereby facilitating assembly and fixing of the buffer assembly support 301.

[0046] like Figures 3 to 5 As shown, a limit guide rod 302 is fixedly connected inside the buffer assembly support 301, and the limit guide rod 302 is arranged through the assembly buffer slider 202. The limit guide rod 302 plays a role of supporting and limiting the assembly buffer slider 202, and at the same time, the limit guide rod 302 plays a role of sliding guide and limiting the assembly buffer slider 202.

[0047] like Figures 3 to 5 As shown, a pair of locking bolts 306 are fixedly connected between the limiting guide rod 302 and the buffer assembly support 301. The limiting guide rod 302 and the buffer assembly support 301 are assembled and fixed by the pair of locking bolts 306.

[0048] like Figures 2 to 5 As shown, a pair of annular buffer gas cylinders 303 are fixedly connected to the inner wall of the buffer assembly support 301, and the pair of annular buffer gas cylinders 303 are symmetrically distributed on both sides of the assembly buffer slider 202. The annular buffer gas cylinders 303 play a role of supporting and buffering the support ring 304.

[0049] like Figures 2 to 5 As shown, a pair of annular buffer gas cylinders 303 are slidably equipped with support rings 304. The support rings 304 connect the support rings 309 and the sealing compression rings 307, so that the sealing compression rings 307 can compress and control the compression buffer cavity with the movement of the assembled buffer slider 202 under the action of the support rings 304 and the support rings 309.

[0050] Specifically, a plurality of evenly distributed conical slow-flow exhaust holes are drilled on the inner walls of the pair of annular buffer gas cylinders 303, and the diameter of the conical slow-flow exhaust holes located inside the annular buffer gas cylinder 303 is larger than the diameter outside the annular buffer gas cylinder 303. By drilling the conical slow-flow exhaust holes, when the annular buffer gas cylinder 303 is compressed, the gas in the compression buffer cavity can be slowly discharged along the conical slow-flow exhaust holes, thereby playing a buffering and limiting role for the sealing compression ring 307.

[0051] like Figures 3 to 5As shown, a pair of annular buffer cylinders 303 are slidably equipped with sealing compression rings 307, and the sealing compression rings 307 are fixedly connected to one side of the support ring 304 located in the annular buffer cylinder 303. The sealing compression rings 307 support and fix the support rings 304, and at the same time, the compression buffer cavity is compressed by the sealing compression rings 307 sliding in the annular buffer cylinder 303.

[0052] The sealing compression ring 307 cooperates with the annular buffer gas cylinder 303 to form a compression buffer cavity, and a return spring 308 is arranged in the compression buffer cavity. The sealing compression ring 307 is supported and reset by the contraction and reset of the return spring 308.

[0053] like Figures 3 to 5 As shown, a support ring 309 is fixedly connected to one side of the support ring 304 outside the annular buffer cylinder 303. The support ring 309 plays a role of supporting and limiting the assembly buffer slider 202.

[0054] like Figures 3 to 5 As shown, a pair of buffer air cushions 310 are fixedly connected to the outer side of the annular buffer air cylinder 303. The contraction and expansion of the pair of buffer air cushions 310 play a role of buffering and auxiliary limiting for assembling the buffer slider 202.

[0055] like Figures 3 to 5 As shown, a pair of buffer air cushions 310 and the annular buffer air cylinder 303 are both fixedly connected with a conducting air pipe 311, and the conducting air pipe 311 is connected with the compression buffer chamber. The conducting air pipe 311 serves to connect the buffer air cushion 310 and the annular buffer air cylinder 303, so that the gas in the compression buffer chamber can be transported to the annular buffer air cylinder 303 along the conducting air pipe 311 under the action of the sealing compression ring 307, thereby controlling the expansion and contraction state of the annular buffer air cylinder 303.

[0056] It is worth noting that the inner diameter of the air pipe 311 is the same as the diameter of the conical slow-flow exhaust hole at one end outside the annular buffer air cylinder 303 .

[0057] During specific use, the fixed base plate 305 can be fixedly assembled on the vehicle frame through the multiple assembly fixing holes on the fixed base plate 305. Subsequently, the hydraulic cylinder is assembled by assembling and limiting the hydraulic cylinder base through the connecting pin shaft 1, and the assembly of the hydraulic cylinder is completed.

[0058] When the hydraulic cylinder is used to control the lifting of the vehicle cab, the hydraulic cylinder will transfer the gravity of the vehicle cab to the connecting pin 1. In this process, the radial support plate 203 can compress the multiple elastic connecting blocks 206 to play a role of radial elastic support for the connecting pin 1, thereby reducing the possibility of damage and breakage of the connecting pin 1 due to the instantaneous radial force.

[0059] At the same time, when the connecting pin shaft 1 is subjected to an instantaneous horizontal force, the assembly buffer slider 202 drives the bearing ring 309 to move the support ring 304 under the action of the instantaneous horizontal force, and the gas in the compression buffer cavity can be discharged along the conical slow-flow exhaust hole by compressing the return spring 308 through the sealing compression ring 307, and the sealing compression ring 307 is buffered and limited by slowly discharging the gas in the compression buffer cavity through the conical slow-flow exhaust hole. In addition, the gas discharged from the conical slow-flow exhaust hole can be blown to cool the limiting guide rod 302, thereby ensuring the stability of the limiting guide rod 302.

[0060] In addition, when the sealing compression ring 307 compresses the compression buffer chamber, part of the gas in the compression buffer chamber can be transported to the buffer air cushion 310 along the air guide pipe 311. The expansion of the buffer air cushion 310 can assist in supporting and limiting the assembly buffer slider 202, thereby further improving the effect of buffering and limiting the assembly buffer slider 202. By buffering and limiting the assembly buffer slider 202, the risk of damage to the connecting pin shaft 1 due to instantaneous force is reduced.

[0061] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic cylinder support for an industrial vehicle cab, characterized in that: include: Connecting pin; A pair of radial buffer connection components, fixedly assembled at both ends of the connecting pin shaft, the radial buffer connection components include a pin shaft assembly frame, the pin shaft assembly frame is fixedly assembled at the end of the connecting pin shaft, the pin shaft assembly frame is fixedly assembled with an assembly buffer slider on the side away from the connecting pin shaft, and a plurality of groups of evenly distributed radial support plates are connected in the assembly buffer slider; A pair of buffer assembly mechanisms are fixedly assembled on both sides of the connecting pin shaft, and the buffer assembly mechanism includes a buffer assembly support, and the buffer assembly support is slidably assembled on the outside of the assembly buffer slider. A limiting guide rod is fixedly connected inside the buffer assembly support, and the limiting guide rod passes through the assembly buffer slider. A pair of annular buffer air cylinders are fixedly connected to the inner wall of the buffer assembly support, and the pair of annular buffer air cylinders are symmetrically distributed on both sides of the assembly buffer slider, and support rings are slidably assembled inside the pair of annular buffer air cylinders.

2. The hydraulic cylinder support for an industrial vehicle cab according to claim 1, characterized in that: The pin shaft assembly frame is provided with an assembly avoidance hole matched with the connecting pin shaft, and a plurality of sets of fixing bolts are fixedly connected between the pin shaft assembly frame and the assembly buffer sliding block.

3. The hydraulic cylinder support for an industrial vehicle cab according to claim 1, characterized in that: A sliding buffer hole is bored in the assembly buffer sliding block, the limiting guide rod is inserted into the sliding buffer hole, and a plurality of groups of evenly distributed limiting protrusions are integrally formed on the inner wall of the sliding buffer hole.

4. The hydraulic cylinder support for an industrial vehicle cab according to claim 3, characterized in that: The plurality of groups of the position-limiting protrusions and the radial support plates are staggeredly distributed, and radial sliding gaps are formed between the plurality of groups of the radial support plates and the assembly buffer sliders, and a plurality of evenly distributed elastic connecting blocks are arranged in the radial sliding gaps.

5. The hydraulic cylinder support for an industrial vehicle cab according to claim 1, characterized in that: A fixed base plate is fixedly connected to the side of the buffer assembly support facing away from the connecting pin shaft, and a plurality of evenly distributed assembly fixing holes are drilled on the fixed base plate.

6. The hydraulic cylinder support for an industrial vehicle cab according to claim 1, characterized in that: A pair of locking bolts are fixedly connected between the limit guide rod and the buffer assembly support.

7. The hydraulic cylinder support for an industrial vehicle cab according to claim 1, characterized in that: A pair of the inner walls of the annular buffer cylinders are each provided with a plurality of evenly distributed conical slow-flow exhaust holes, and the diameters of the conical slow-flow exhaust holes located inside the annular buffer cylinders are greater than the diameters of the conical slow-flow exhaust holes located outside the annular buffer cylinders.

8. The hydraulic cylinder support for an industrial vehicle cab according to claim 1, characterized in that: A sealing compression ring is slidably mounted inside a pair of annular buffer cylinders. The sealing compression ring is fixedly connected to a support ring on one side of the annular buffer cylinder. The sealing compression ring cooperates with the annular buffer cylinder to form a compression buffer cavity. A return spring is arranged inside the compression buffer cavity.

9. The hydraulic cylinder support for an industrial vehicle cab according to claim 8, characterized in that: The support ring is fixedly connected with a supporting ring on one side outside the annular buffer air cylinder.

10. The hydraulic cylinder support for an industrial vehicle cab according to claim 8, characterized in that: A pair of buffer air cushions are fixedly connected to the outer side of the annular buffer air cylinder, and a conducting air pipe is fixedly connected between the pair of buffer air cushions and the annular buffer air cylinder, and the conducting air pipe is communicated with the compression buffer chamber.

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