Shock absorber of engineering vehicle

Abstract

The utility model relates to the technical field of damping devices, and discloses an engineering vehicle damper which comprises a sleeve, the upper surface of the sleeve is movably sleeved with a telescopic rod, and the bottom end of the telescopic rod penetrates through the sleeve, extends into the sleeve and is fixedly connected with a first piston plate. Through the arrangement of the first piston plate, the connecting ring, the U-shaped block, the movable block and the driven rods, when the first motor starts to operate, the circular shaft and the driving rod start to rotate, the two ends of the driving rod drive the two driven rods respectively at the moment, and therefore the two driven rods start to rotate; the other ends of the two driven rods drive the two movable blocks respectively, so that the two movable blocks start to move oppositely, and along with movement of the movable blocks, gaps between the U-shaped blocks and the movable blocks are gradually reduced, so that the speed of damping liquid below the second piston plate flowing to the position above the first piston plate through the U-shaped blocks and the movable blocks is slowed down.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorber technical field, more specifically, the utility model relates to an engineering vehicle shock absorber. BACKGROUND

[0002] The shock absorber is a kind of device that absorbs and dissipates mechanical vibration energy by damping effect, and its core is composed of cylinder, piston valve and hydraulic oil, and its working principle is based on the resistance generated by the flow of hydraulic oil through valve system when piston moves, and kinetic energy is converted into heat energy, and vibration transmission to equipment or structure is inhibited, and the shock absorber is widely used in automobile suspension system, building anti-seismic base and industrial machinery protection, and can improve the stability of equipment or vehicle, prolong the service life of component and improve ride comfort, and plays a crucial role in balancing efficiency and safety and reducing maintenance cost.

[0003] When installing shock-absorbing device on engineering vehicle, a large number of vehicle shock absorbers are generally needed to provide more stable driving experience, but the existing shock absorber has fixed size of damping hole, so the damping performance of the shock absorber cannot be adjusted according to actual needs, and therefore it needs to be improved. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an engineering vehicle shock absorber, which has the advantages of adjustable damping.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an engineering vehicle shock absorber, comprising a sleeve, the upper surface of the sleeve movably sleeved with a telescopic rod, the bottom end of the telescopic rod penetrating through the sleeve and extending to the inside of the sleeve and fixedly connected with a first piston plate, the lower surface of the first piston plate fixedly connected with a connecting ring, the lower surface of the connecting ring fixedly connected with a second piston plate, the outer surfaces of the first piston plate, the connecting ring and the second piston plate movably sleeved with the inner surface of the sleeve, the outer surfaces of the left and right sides of the first piston plate and the second piston plate are provided with damping holes, the inner surfaces of the left and right sides between the first piston plate and the second piston plate are fixedly connected with U-shaped blocks, the number of U-shaped blocks is two, the inner surfaces of the two U-shaped blocks are movably connected with movable blocks, the number of movable blocks is two, the sizes of the two movable blocks are the same, the inner surface of the bottom end of the telescopic rod is fixedly installed with a first motor, the other end of the output shaft of the first motor is fixedly sleeved with a circular shaft, the outer surface of the circular shaft is fixedly sleeved with a driving rod between the first piston plate and the second piston plate, the two ends of the driving rod are hingedly connected with driven rods, the number of driven rods is two, the other ends of the two driven rods are hingedly connected with the outer surfaces of the two movable blocks.

[0006] As a preferred technical scheme of the utility model, the lower surface of the first piston plate and the upper surface of the second piston plate are both provided with a movable groove, the inner surface of the movable groove is movably connected with a limiting block, the number of the limiting blocks is four, every two of the limiting blocks form a group, and the limiting blocks in each group are movably connected with the outer surfaces of the upper and lower sides of two movable blocks.

[0007] As a preferred technical scheme of the utility model, the lower surface of the first piston plate and the upper surface of the second piston plate are both provided with a movable groove, the inner surface of the movable groove is movably connected with a limiting block, the number of the limiting blocks is four, every two of the limiting blocks form a group, and the limiting blocks in each group are movably connected with the outer surfaces of the upper and lower sides of two movable blocks.

[0008] As a preferred technical scheme of the utility model, the number of the movable plates is two, the top ends of the two movable plates are movably connected with a pressing block, the outer surface of the pressing block is movably connected with a trapezoidal block, the lower surface of the trapezoidal block is movably connected with the upper surface of the base plate, and the outer surface of the trapezoidal block is fixedly connected with the left and right sides of the outer surface of the sleeve.

[0009] As a preferred technical scheme of the utility model, the inner surface of the middle part of the base plate is fixedly connected with a second motor, and the other end of the output shaft of the second motor is movably connected with a rotating shaft.

[0010] As a preferred technical scheme of the utility model, the outer surface of the rotating shaft is movably connected with a gear between the base plate and the cover plate, the outer surface of the gear is movably connected with a toothed plate, the number of the toothed plates is two, and the upper surfaces of the two toothed plates are fixedly connected with the lower surfaces of the two movable plates.

[0011] As a preferred technical scheme of the utility model, the outer surfaces of the two toothed plates are movably connected with a limiting plate, and the top end of the limiting plate is fixedly connected with the lower surface of the base plate.

[0012] Compared with the prior art, the utility model has the advantages of the following:

[0013] 1、The utility model discloses a piston plate, a connecting ring, a U-shaped block, a movable block and a driven rod are arranged, when the first motor starts to run, the circular shaft and the driving rod start to rotate, the two ends of the driving rod drive two driven rods respectively, so that the two driven rods start to rotate, at the same time, the other ends of the two driven rods drive two movable blocks respectively, so that the two movable blocks start to move in opposite directions, with the movement of the movable blocks, the gap between the U-shaped block and the movable block gradually reduces, the speed of the damping liquid below the second piston plate to the upper side of the first piston plate through the U-shaped block and the movable block slows down, and the adjustment function of the overall damping performance of the sleeve is realized.

[0014] 2, the utility model discloses a bottom disc, moving plate, briquetting, trapezoidal block and toothed plate are set up, when no. 2 motor starts to operate, rotating shaft and gear will start to rotate, because gear and toothed plate are mutually engaged, at this moment, two toothed plates and two moving plates whole will start to move along the inner surface of moving groove oppositely, finally briquetting will no longer block trapezoidal block, at this moment, sleeve whole can be drawn out from the inside of bottom disc, thereby the replacement of the damping oil in the inside of sleeve and the maintenance of each component in the inside of sleeve are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model;

[0016] Figure 2 It is the sectional structure schematic diagram of the utility model;

[0017] Figure 3 It is the sectional structure schematic diagram of the side of the utility model;

[0018] Figure 4 It is the sectional structure schematic diagram of the sleeve of the utility model;

[0019] Figure 5 It is the structure schematic diagram of the limiting plate of the utility model;

[0020] Figure 6 It is Figure 2 It is the local enlarged structure schematic diagram of A place in middle.

[0021] In the drawing: 1, sleeve;2, telescopic rod;3, no. 1 piston plate;4, connecting ring;5, no. 2 piston plate;6, damping hole;7, U-shaped block;8, movable block;9, no. 1 motor;10, round shaft;11, driving rod;12, driven rod;13, movable groove;14, limiting block;15, bottom disc;16, cover plate;17, moving groove;18, moving plate;19, briquetting;20, trapezoidal block;21, no. 2 motor;22, rotating shaft;23, gear;24, toothed plate;25, limiting plate. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] As Figures 1 to 6As shown, this utility model provides a shock absorber for engineering vehicles, including a sleeve 1. A telescopic rod 2 is movably sleeved on the upper surface of the sleeve 1. The bottom end of the telescopic rod 2 penetrates the sleeve 1 and extends into the interior of the sleeve 1, and is fixedly connected to a first piston plate 3. A connecting ring 4 is fixedly connected to the lower surface of the first piston plate 3, and a second piston plate 5 is fixedly connected to the lower surface of the connecting ring 4. The outer surfaces of the first piston plate 3, the connecting ring 4, and the second piston plate 5 are all movably sleeved with the inner surface of the sleeve 1. Damping holes 6 are formed on the outer surfaces of the first piston plate 3 and the second piston plate 5 on both the left and right sides. The inner surfaces of the first piston plate 3 and the second piston plate 5 are connected to each other. Two U-shaped blocks 7 are fixedly connected to both sides. The inner surfaces of the two U-shaped blocks 7 are movably connected to two movable blocks 8. The two movable blocks 8 are the same size. A motor 9 is fixedly installed on the inner surface of the bottom end of the telescopic rod 2. A round shaft 10 is fixedly sleeved on the other end of the output shaft of the motor 9. An active rod 11 located between the first piston plate 3 and the second piston plate 5 is fixedly sleeved on the outer surface of the round shaft 10. Two driven rods 12 are hinged to both ends of the active rod 11. The other ends of the two driven rods 12 are respectively hinged to the outer surfaces of the two movable blocks 8.

[0024] When the operator starts motor 9, the circular shaft 10 and the driving rod 11 will start to rotate. At this time, the driven rod 12 will start to rotate under the drive of the driving rod 11, and the other end of the driven rod 12 will drive the movable block 8, thereby causing the two movable blocks 8 to start moving in opposite directions.

[0025] Among them, the lower surface of piston plate 3 and the upper surface of piston plate 5 are provided with movable grooves 13. The inner surface of the movable groove 13 is movably connected to the limiting block 14. There are four limiting blocks 14. The four limiting blocks 14 are divided into two groups. Each group of limiting blocks 14 is fixedly connected to the outer surfaces of the upper and lower sides of the two movable blocks 8 respectively.

[0026] The design of the movable slot 13 and the limiting block 14 restricts the movement direction and range of the movable block 8.

[0027] Among them, the lower side of the inner surface of the sleeve 1 is movably sleeved with the base plate 15, the lower surface of the base plate 15 is fixedly connected with the cover plate 16, and the left and right sides of the upper surface of the base plate 15 are provided with moving grooves 17, and the inner surface of the moving grooves 17 is movably connected with the moving plate 18.

[0028] The design of the moving groove 17 allows the moving plate 18 to move left and right along the inner surface of the moving groove 17.

[0029] The top end of the two moving plates 18 is fixedly connected with a pressing block 19, the outer surface of the pressing block 19 is movably connected with a trapezoidal block 20, the lower surface of the trapezoidal block 20 is movably connected with the upper surface of the bottom disc 15, and the outer surface of the trapezoidal block 20 is fixedly connected with the left and right sides of the outer surface of the sleeve 1.

[0030] The opposite movement of the two pressing blocks 19 can press the trapezoidal block 20 and the sleeve 1 as a whole, so that the sleeve 1 as a whole is fixed in the inside of the bottom disc 15.

[0031] The inner surface of the middle part of the bottom disc 15 is fixedly installed with a second motor 21, and the other end of the output shaft of the second motor 21 is fixedly sleeved with a rotating shaft 22.

[0032] When the second motor 21 starts to operate, the rotating shaft 22 starts to rotate.

[0033] The outer surface of the rotating shaft 22 is fixedly sleeved with a gear 23 located between the bottom disc 15 and the cover plate 16, the outer surface of the gear 23 is meshingly connected with a toothed plate 24, the number of the toothed plate 24 is two, and the upper surfaces of the two toothed plates 24 are fixedly connected with the lower surfaces of the two moving plates 18 respectively.

[0034] The rotation of the gear 23 drives the toothed plate 24, so that the two toothed plates 24 and the two moving plates 18 as a whole start to move towards or away from each other.

[0035] The outer surfaces of the two toothed plates 24 are movably connected with a limiting plate 25, and the top end of the limiting plate 25 is fixedly connected with the lower surface of the bottom disc 15.

[0036] The design of the limiting plate 25 ensures the stability of the toothed plate 24 during movement.

[0037] The working principle and use process of the utility model are as follows:

[0038] When the operator needs to adjust the damping performance of the sleeve 1 as a whole, the operator starts the first motor 9, and with the operation of the first motor 9, the circular shaft 10 and the driving rod 11 start to rotate, at this time, the two ends of the driving rod 11 drive the driven rods 12 respectively, so that the driven rods 12 start to rotate, at this time, the other end of the driven rod 12 drives the movable block 8, so that the two movable blocks 8 start to move towards or away from each other, with the movement of the movable block 8, the size of the gap between the U-shaped block 7 and the movable block 8 changes, at this time, the damping performance of the sleeve 1 as a whole changes, until the use needs of the operator are met.

[0039] When the operator needs to replace the damping oil inside the sleeve 1, the operator starts the second motor 21, and with the operation of the second motor 21, the rotating shaft 22 and the gear 23 start to rotate, and since the gear 23 and the toothed plate 24 are engaged with each other, at this time, the two toothed plates 24 and the two moving plates 18 as a whole start to move in opposite directions, and finally the pressing block 19 moves to the outside of the trapezoidal block 20 so as to no longer block the trapezoidal block 20, at this time, the chassis 15 can be directly removed, thereby facilitating the replacement of the damping oil inside the sleeve 1.

[0040] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A shock absorber for engineering vehicles, comprising a sleeve (1), characterized in that: A telescopic rod (2) is movably sleeved on the upper surface of the sleeve (1). The bottom end of the telescopic rod (2) penetrates the sleeve (1) and extends into the interior of the sleeve (1), and is fixedly connected to a first piston plate (3). A connecting ring (4) is fixedly connected to the lower surface of the first piston plate (3). A second piston plate (5) is fixedly connected to the lower surface of the connecting ring (4). The outer surfaces of the first piston plate (3), the connecting ring (4), and the second piston plate (5) are all movably sleeved with the inner surface of the sleeve (1). Damping holes (6) are opened on the outer surfaces of the first piston plate (3) and the second piston plate (5) on both sides. U-shaped blocks (7) are fixedly connected to the left and right sides of the inner surfaces between the first piston plate (3) and the second piston plate (5). There are two U-shaped blocks (7), and the inner surfaces of the two U-shaped blocks (7) are movably connected to movable blocks (8). There are two movable blocks (8), and the two movable blocks (8) are the same size. A motor (9) is fixedly installed on the inner surface of the bottom end of the telescopic rod (2). A round shaft (10) is fixedly sleeved on the other end of the output shaft of the motor (9). An active rod (11) located between the first piston plate (3) and the second piston plate (5) is fixedly sleeved on the outer surface of the round shaft (10). Both ends of the active rod (11) are hinged to driven rods (12). There are two driven rods (12), and the other ends of the two driven rods (12) are respectively hinged to the outer surfaces of the two movable blocks (8).

2. The shock absorber for engineering vehicles according to claim 1, characterized in that: The lower surface of the first piston plate (3) and the upper surface of the second piston plate (5) are provided with movable grooves (13). The inner surface of the movable groove (13) is movably connected to a limiting block (14). There are four limiting blocks (14). The four limiting blocks (14) are arranged in pairs. Each pair of limiting blocks (14) is fixedly connected to the outer surfaces of the upper and lower sides of the two movable blocks (8).

3. A shock absorber for engineering vehicles according to claim 1, characterized in that: A base plate (15) is movably sleeved on the lower side of the inner surface of the sleeve (1). A cover plate (16) is fixedly connected to the lower surface of the base plate (15). Movable grooves (17) are provided on both the left and right sides of the upper surface of the base plate (15). A movable plate (18) is movably connected to the inner surface of the movable groove (17).

4. A shock absorber for engineering vehicles according to claim 3, characterized in that: There are two movable plates (18), and each of the two movable plates (18) is fixedly connected to a pressure block (19). The outer surface of the pressure block (19) is movably connected to a trapezoidal block (20). The lower surface of the trapezoidal block (20) is movably connected to the upper surface of the chassis (15). The outer surface of the trapezoidal block (20) is fixedly connected to the left and right sides of the outer surface of the sleeve (1).

5. A shock absorber for engineering vehicles according to claim 3, characterized in that: A second motor (21) is fixedly installed on the inner surface of the middle part of the chassis (15), and a rotating shaft (22) is fixedly sleeved on the other end of the output shaft of the second motor (21).

6. A shock absorber for engineering vehicles according to claim 5, characterized in that: The outer surface of the rotating shaft (22) is fixedly fitted with a gear (23) located between the chassis (15) and the cover plate (16). The outer surface of the gear (23) is meshed with a toothed plate (24). There are two toothed plates (24), and the upper surfaces of the two toothed plates (24) are fixedly connected to the lower surfaces of the two moving plates (18).

7. A shock absorber for engineering vehicles according to claim 6, characterized in that: Both of the toothed plates (24) have a limiting plate (25) movably connected to their outer surfaces, and the top of the limiting plate (25) is fixedly connected to the lower surface of the chassis (15).

Images