Adjustable cab air spring

Abstract

The utility model relates to an adjustable cab air spring, which belongs to the technical field of air springs, and comprises an upper mounting bracket, a lower mounting bracket, an air spring airbag and a positioning screw, the air spring airbag is fixedly connected with a top plate and a bottom frame, and the top plate is fixedly provided with an air tap, a limiting block and a connecting rod; the bottom frame is fixedly connected with a spring damping shock-absorbing rod, the spring damping shock-absorbing rod is fixedly connected with the connecting rod, the bottom frame is fixedly connected with an adjusting frame, the adjusting frame is rotatably connected with a ball screw, the ball screw is fixedly connected with a ratchet wheel knob, the bottom frame is rotatably connected with a pawl, and the ball screw is in threaded connection with a screw nut. The air spring can be prevented from being damaged due to overlarge load, the service life of the air spring is guaranteed, the safety in a cab can be guaranteed, the limiting amplitude can be adjusted, the buffering deformation upper limit of the air spring can be changed according to needs, and the service life of the air spring is prolonged. A user can adjust the buffering capacity and the anti-explosion capacity of the air spring according to needs.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring technical field especially is involved in a kind of adjustable cab air spring. BACKGROUND

[0002] Air spring is a kind of non-metallic elastic element by like capsule and compressed air into its cavity, often applied to the cab seat shock absorption of various locomotives, during the vehicle driving, air spring in cab seat can effectively alleviate vehicle vibration, and play a time delay and shock absorption effect to vibration and impact.

[0003] Through the retrieval, the existing public number CN202420408764.3 of Chinese patent discloses a kind of adjustable air spring, by setting installation component and limiting component, under the elastic performance of second spring, second clamping plate is driven to move, so that the limiting effect of limiting hole can be realized or cancelled, it is convenient for staff to quickly install and disassemble first clamping ring and second clamping ring, reach the purpose of quickly installing and disassembling air spring body, save time, work efficiency is high, solve the above-mentioned air spring assembly of easy disassembly when in use air spring body and adjacent structure are all fixed connection, so as to be inconvenient for staff to install and disassemble air spring body, unable to repair and replace internal structure, possibly cause resource waste problem.

[0004] The technical scheme above has the following defects, such air spring structure can be quickly disassembled by clamping ring and clamping plate, so as to facilitate maintenance and replacement, and in actual use, in order to ensure service life, limiting component is usually used to limit air spring, so as to prevent air spring from being damaged due to excessive load, reduce service life of air spring, in order to ensure the safety inside cab, and limiting amplitude can be adjusted, so that the upper limit of air spring buffer deformation can be changed according to needs, so that users can adjust the buffer and explosion resistance of air spring according to needs, present adjustable cab air spring, not only air spring can be installed in cab, but also disassembly, replacement and maintenance are facilitated, limiting component is arranged, explosion resistance can be effectively resisted, and explosion resistance limit can be adjusted according to actual needs, so as to have better applicability.

[0005] Therefore, the present application improves and solves the above problems, and finally proposes a technical scheme with reasonable design and effective improvement of the above defects.

[0006] The information disclosed in the background section of this document is intended only to enhance the understanding of the general background of the present utility model, and should not be considered as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0007] The utility model provides a kind of adjustable cab air spring, solve the problem raised in the above background, can prevent air spring damage caused by excessive load, guarantee the service life of air spring, to guarantee the safety inside cab, And can adjust the limiting amplitude, so as to change the upper limit of air spring according to the needs of cushion deformation, so that the user can adjust the cushioning resistance of air spring according to the needs.

[0008] The utility model discloses a kind of adjustable cab air spring, including upper installation bracket, lower installation bracket, air spring air bag, locating screw, the air spring air bag is fixedly connected with top plate and chassis, the top plate is fixedly installed with air cock, limiting block and connecting rod, the chassis is fixedly connected with spring damping shock absorber, the spring damping shock absorber is fixedly connected with connecting rod, the chassis is fixedly connected with adjusting frame, the adjusting frame is rotatably connected with ball screw, the ball screw is fixedly connected with ratchet knob, the chassis is rotatably connected with pawl, the ball screw is screwedly connected with screw nut, the screw nut is fixedly connected with lifting slide, the lifting slide is fixedly connected with support rod, the support rod is fixedly connected with limiting block, the upper installation bracket and top plate can be connected by locating screw, the lower installation bracket and chassis can be connected by locating screw.

[0009] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0010] Further, the inner wall of the adjusting frame is provided with a limiting sliding groove corresponding to the lifting slide, and the limiting sliding groove is slidably connected with the lifting slide, so that the lifting slide can stably ascend and descend in the inner wall of the adjusting frame.

[0011] Further, the upper installation bracket is provided with a first installation groove corresponding to the top plate, and the lower installation bracket is provided with a second installation groove corresponding to the chassis, so that the top plate can be closely attached to the upper installation bracket, and the chassis can be closely attached to the lower installation bracket.

[0012] Further, the upper installation bracket and the lower installation bracket are both provided with bolt holes, so that the upper installation bracket and the lower installation bracket can be stably installed in the cab.

[0013] Further, the top of the adjusting frame is provided with a sliding hole corresponding to the support rod, and the inner wall of the sliding hole is provided with a sealing rubber ring.

[0014] Further, the top plate and the chassis are both provided with screw grooves corresponding to the locating screw, so that the top plate and the chassis can be fixedly connected with the upper installation bracket and the lower installation bracket, respectively, through the locating screw.

[0015] Further, a groove is formed in the top of the limiting block corresponding to the limiting block, so that the limiting block can be in close contact with the limiting block.

[0016] Further, a rotating hole is formed in the chassis corresponding to the ball screw, and the inner wall of the rotating hole is rotatably connected with the ball screw through a sealing bearing, so that air in the air spring air bag can be effectively prevented from being discharged into the chassis.

[0017] The adjustable cab air spring has the following advantages.

[0018] 1. The upper installation bracket and the lower installation bracket can be fixedly installed in the cab through bolts, the top plate at the top of the air spring air bag can be clamped into a first accommodating groove of the upper installation bracket, and the chassis can be clamped into a second accommodating groove of the lower installation bracket; the upper installation bracket can be connected with the top plate through a positioning screw, and the lower installation bracket and the chassis can be connected through a positioning screw; the connecting structure enables the air spring air bag to be quickly installed in the cab, and the air spring can be quickly removed, maintained and replaced by loosening the positioning screw.

[0019] 2. When compressed, the top plate and the chassis can extrude the air spring air bag, and the air spring air bag and the spring damping shock rod in the air spring air bag can buffer and dampen after bearing pressure; when the air spring air bag is extruded greatly, the limiting block can be in contact with the limiting block, so that the top plate and the chassis can be limited, thereby achieving the effect of explosion-proof protection.

[0020] 3. The pawl is rotated and opened, and the ratchet knob is rotated; the ratchet knob can drive the lifting slider to ascend and descend in the adjusting frame through a screw nut, and the lifting slider can adjust the height of the limiting block through the supporting rod, so that the deformation capacity of the air spring air bag can be adjusted; when the air spring air bag needs a larger buffer stroke, the limiting block can be adjusted to be lower, so that the anti-explosion function can be reduced and the damping and buffering function can be improved according to actual needs.

[0021] 4. The cab air spring can prevent the air spring from being damaged due to excessive load, ensure the service life of the air spring, thereby ensuring the safety in the cab, and can adjust the limiting range, so that the upper limit of the buffer deformation of the air spring can be changed according to needs, and the user can adjust the buffer and anti-explosion capacity of the air spring according to needs.

[0022] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following is a preferred embodiment of the utility model and the detailed description of the drawings. The specific implementation of the utility model is given in detail by the following examples and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention, but do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 A schematic diagram of an adjustable cab air spring provided in an embodiment of this utility model;

[0025] Figure 2 A split schematic diagram of an adjustable cab air spring provided for one embodiment of this utility model;

[0026] Figure 3 A front view of an adjustable cab air spring provided in an embodiment of this utility model;

[0027] Figure 4 This is a top-view structural diagram of an adjustable cab air spring according to an embodiment of the present invention.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Upper mounting bracket; 2. Lower mounting bracket; 3. Air spring airbag; 4. Top plate; 5. Base frame; 6. Air nozzle; 7. Limit block; 8. Connecting rod; 9. Spring damping shock absorber rod; 10. Adjusting frame; 11. Ball screw; 12. Ratchet knob; 13. Pawl; 14. Screw nut; 15. Lifting slider; 16. Support rod; 17. Limit block; 18. Limit groove; 19. First mounting slot; 20. Second mounting slot; 21. Positioning screw. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-4 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0031] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] like Figures 1-4 As shown, an adjustable cab air spring includes an upper mounting bracket 1, a lower mounting bracket 2, an air spring bladder 3, and a positioning screw 21. The air spring bladder 3 is fixedly connected to a top plate 4 and a base frame 5. The top plate 4 is fixedly mounted with an air nozzle 6, a limit block 7, and a connecting rod 8. The base frame 5 is fixedly connected with a spring damping shock absorber rod 9, which is fixedly connected to the connecting rod 8. The base frame 5 is fixedly connected with an adjustment frame 10, which is rotatably connected to a ball screw 11. The ball screw 11 is fixedly connected to a ratchet knob 12, and the base frame 5 is rotatably connected to a pawl 13. The ball screw 11 is threadedly connected to a screw nut 14, which is fixedly connected to a lifting slider 15. The lifting slider 15 is fixedly connected to a support rod 16, which is fixedly connected to a limit block 17. The upper mounting bracket 1 and the top plate 4 can be connected via the positioning screw 21, and the lower mounting bracket 2 and the base frame 5 can be connected via the positioning screw 21.

[0034] Preferably, the inner wall of the adjusting frame 10 is provided with a limiting groove 18 corresponding to the lifting slider 15. The limiting groove 18 is slidably connected to the lifting slider 15, so that the lifting slider 15 can be stably raised and lowered on the inner wall of the adjusting frame 10.

[0035] Preferably, the upper mounting bracket 1 has a first mounting slot 19 corresponding to the top plate 4, and the lower mounting bracket 2 has a second mounting slot 20 corresponding to the base frame 5, so that the top plate 4 can be tightly fitted with the upper mounting bracket 1 and the base frame 5 can be tightly fitted with the lower mounting bracket 2.

[0036] Preferably, both the upper mounting bracket 1 and the lower mounting bracket 2 are provided with bolt holes, so that the upper mounting bracket 1 and the lower mounting bracket 2 can be stably installed in the cab.

[0037] Preferably, the top of the adjusting frame 10 is provided with a sliding hole corresponding to the supporting rod 16, and the inner wall of the sliding hole is provided with a sealing rubber ring.

[0038] Preferably, the top plate 4 and the bottom frame 5 are both provided with a screw groove corresponding to the positioning screw 21, so that the top plate 4 and the bottom frame 5 can be fixedly connected with the upper mounting bracket 1 and the lower mounting bracket 2 respectively through the positioning screw 21.

[0039] Preferably, the top of the limiting block 17 is provided with a groove corresponding to the limiting block 7, so that the limiting block 7 can be in close contact with the limiting block 17.

[0040] Preferably, the bottom frame 5 is provided with a rotating hole corresponding to the ball screw 11, and the inner wall of the rotating hole is rotatably connected with the ball screw 11 through a sealing bearing, which can effectively prevent the air in the air spring air bag 3 from being discharged into the bottom frame 5.

[0041] The specific working principle and use method of the utility model are as follows: the upper mounting bracket 1 and the lower mounting bracket 2 can be fixedly installed in the cab through bolts, the top plate 4 at the top of the air spring air bag 3 can be clamped into the first accommodating groove 19 of the upper mounting bracket 1, and the bottom frame 5 can be clamped into the second accommodating groove 20 of the lower mounting bracket 2; the upper mounting bracket 1 and the top plate 4 can be connected through the positioning screw 21, and the lower mounting bracket 2 and the bottom frame 5 can be connected through the positioning screw 21; such a connection structure enables the air spring air bag 3 to be quickly installed in the cab, and the air spring air bag 3 can be quickly removed by loosening the positioning screw 21; when compressed, the top plate 4 and the bottom frame 5 can extrude the air spring air bag 3, and the air spring air bag 3 and the spring damping shock rod 9 in the air spring air bag 3 can buffer and dampen after bearing pressure; when the air spring air bag 3 is extruded greatly, the limiting block 7 can be in contact with the limiting block 17, thereby limiting the top plate 4 and the bottom frame 5, and achieving the effect of explosion-proof protection; the pawl 13 is unscrewed, the ratchet knob 12 is rotated, the ratchet knob 12 drives the lifting block 15 to ascend and descend in the adjusting frame 10 through the screw nut 14, the lifting block 15 adjusts the height of the limiting block 17 through the supporting rod 16, thereby adjusting the deformation capacity of the air spring air bag 3; when the air spring air bag 3 needs a larger buffer stroke, the limiting block 17 can be adjusted to be lower, thereby reducing the explosion-proof function and improving the shock-absorbing function according to actual needs.

[0042] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. An adjustable cab air spring, comprising an upper mounting bracket (1), a lower mounting bracket (2), an air spring airbag (3), and a positioning screw (21), characterized in that: The air spring airbag (3) is fixedly connected to a top plate (4) and a base frame (5). The top plate (4) is fixedly installed with an air nozzle (6), a limiting block (7), and a connecting rod (8). The base frame (5) is fixedly connected with a spring damping shock absorber rod (9). The spring damping shock absorber rod (9) is fixedly connected to the connecting rod (8). The base frame (5) is fixedly connected with an adjusting frame (10). The adjusting frame (10) is rotatably connected to a ball screw (11). The ball screw (11) is fixedly connected to a ratchet knob (12). The base frame (5) is rotatably connected to a pawl (13), the ball screw (11) is threadedly connected to a screw nut (14), the screw nut (14) is fixedly connected to a lifting slider (15), the lifting slider (15) is fixedly connected to a support rod (16), the support rod (16) is fixedly connected to a limit block (17), the upper mounting bracket (1) and the top plate (4) can be connected by a positioning screw (21), and the lower mounting bracket (2) and the base frame (5) can be connected by a positioning screw (21).

2. The adjustable cab air spring according to claim 1, characterized in that, The inner wall of the adjusting frame (10) is provided with a limiting groove (18) corresponding to the lifting slider (15), and the limiting groove (18) is slidably connected to the lifting slider (15).

3. The adjustable cab air spring according to claim 1, characterized in that, The upper mounting bracket (1) has a first mounting slot (19) corresponding to the top plate (4), and the lower mounting bracket (2) has a second mounting slot (20) corresponding to the base frame (5).

4. The adjustable cab air spring according to claim 1, characterized in that, Both the upper mounting bracket (1) and the lower mounting bracket (2) are provided with bolt holes.

5. The adjustable cab air spring according to claim 1, characterized in that, The top of the adjustment frame (10) is provided with a sliding hole corresponding to the support rod (16), and a sealing ring is provided on the inner wall of the sliding hole.

6. The adjustable cab air spring according to claim 1, characterized in that, Both the top plate (4) and the base frame (5) have screw slots corresponding to the positioning screws (21).

7. An adjustable cab air spring according to claim 1, characterized in that, The top of the limiting block (17) has a groove corresponding to the limiting block (7).

8. The adjustable cab air spring according to claim 1, characterized in that, The base frame (5) has a rotating hole corresponding to the ball screw (11), and the inner wall of the rotating hole is rotatably connected to the ball screw (11) through a sealed bearing.

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