Damping type hydraulic oil cylinder

Abstract

The utility model discloses a damping type hydraulic oil cylinder, which relates to the field of hydraulic oil cylinders and comprises a mounting plate, an oil cylinder shell is fixedly connected to the inner side of the mounting plate, an oil cylinder piston is arranged in the oil cylinder shell, and a piston rod is fixedly connected to the upper end of the oil cylinder piston. The other end of the piston rod penetrates through the oil cylinder shell and is fixedly connected with a top plate. By the adoption of the structure, when the hydraulic oil cylinder moves, the adjusting rod moves on the surface of the guide rod under the action of the moving block, and when the moving block moves, the protective spring shrinks, so that vibration generated by the hydraulic oil cylinder can be counteracted; and the vibration effect can be further counteracted under the action of the multiple sets of moving grooves and the protection springs, so that the protection effect of the protection base is better, meanwhile, the elastic force generated by the protection springs can be counteracted under the action of the dampers, and the hydraulic oil cylinder can stably return to the original position after damping is completed.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic oil cylinders, in particular to a shock-absorbing hydraulic oil cylinder. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasion, and other devices are indispensable.

[0003] According to a Chinese patent with the announcement number "CN219492761U", a shock-absorbing hydraulic cylinder is disclosed, which relates to the technical field of hydraulic cylinders, in which a bottom plate is fixedly installed at one end of the cylinder body, a No. 1 oil port is fixedly installed on the outer wall of the bottom plate, a No. 2 oil port is fixedly installed on the top of the outer wall of the cylinder body, a buffer sleeve is fixedly installed on the top of the inner wall of the cylinder body, a through hole is opened on the inner side of the buffer sleeve, a piston rod is slidably connected to the inner side of the top of the cylinder body, and a mounting box is movably sleeved on one end of the outer wall of the piston rod. The utility model can isolate the vibration to a certain extent by squeezing the piston rod when it is vibrated, and then use the rubber block on one side of the piston to buffer the piston when the piston is retracted, and the No. 3 spring inside the rubber block is used to improve the elasticity of the piston, thereby solving the problem of short service life of shock-absorbing hydraulic cylinders;

[0004] It can be known from the above structure that the piston rod, the limit plate, the No. 1 spring, the telescopic rod, the No. 2 spring, the rubber block and the No. 3 spring cooperate with each other, and the object is pushed by one end of the piston rod. Then, when the piston rod pushes, the limit plate on the outer wall of the piston rod squeezes the No. 1 spring to reduce the direct impact on the object. Nowadays, when the hydraulic cylinder is used, the cylinder and the driving rod will shake during the transportation of hydraulic oil inside and the pushing of the driving rod. Since there is no corresponding protective mechanism on the outside of the hydraulic cylinder, the outer wall of the cylinder is very easy to contact with objects with higher hardness in the external environment, such as metal casings and the ground. During the contact process, the vibration generated by the outer wall of the cylinder and the recoil generated by the contact will cause damage to the cylinder itself, and will also cause transmission influence on the transmission mechanism inside the cylinder, thereby not only shortening the service life of the entire hydraulic cylinder. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a shock-absorbing hydraulic cylinder to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A shock-absorbing hydraulic cylinder comprises a mounting plate, wherein the inner side of the mounting plate is fixedly connected to a cylinder shell, a cylinder piston is arranged inside the cylinder shell, the upper end of the cylinder piston is fixedly connected to a piston rod, the other end of the piston rod passes through the cylinder shell and is fixedly connected to a top plate, the inner side of the mounting plate is fixedly connected to a shock-absorbing assembly, the shock-absorbing assembly passes through the mounting plate, a protective base is arranged at the lower end of the mounting plate, the protective base comprises a protective frame, a plurality of movable grooves are provided inside the protective frame, movable blocks are slidably connected inside the movable grooves, guide rods are fixedly connected inside the movable grooves, the movable blocks and the guide rods are slidably plugged into each other, the upper end of the movable block is rotatably connected to an adjusting rod, the upper end of the adjusting rod is rotatably connected to a fixing plate, the fixing plate is fixedly connected to the mounting plate, a protective spring is fixedly connected inside the movable groove, the other end of the protective spring is fixedly connected to the movable block, and a damper is fixedly connected between the fixing plate and the protective shell.

[0008] As a preferred technical solution, the shock-absorbing assembly includes a shock-absorbing sleeve rod fixedly connected to the upper end of the mounting plate, the other end of the shock-absorbing sleeve rod passes through the mounting plate, the interior of the shock-absorbing sleeve rod is fixedly connected to a shock-absorbing spring, the other end of the shock-absorbing spring is fixedly connected to a shock-absorbing movable rod, the other end of the shock-absorbing movable rod is fixedly connected to a connecting plate, and the outer side of the connecting plate is fixedly connected to the top plate via a connecting rod.

[0009] As a preferred technical solution, an auxiliary spring is fixedly connected to the upper end of the mounting plate, the auxiliary spring is located outside the shock absorbing sleeve rod and the shock absorbing movable rod, and the other end of the shock absorbing spring is fixedly connected to the connecting plate.

[0010] As an optimal technical solution, a plurality of buffer rods are fixedly connected to the interior of the cylinder housing, the buffer rods penetrate the cylinder piston and are slidably plugged with the cylinder piston, a buffer spring is fixedly connected to the lower end of the interior of the cylinder housing, and the other end of the buffer spring is fixedly connected to the lower end of the cylinder piston.

[0011] As an optimal technical solution, a buffer tension spring is fixedly connected to the upper end of the cylinder housing. There are multiple buffer tension springs, which are arranged on the outside of the buffer rod. The other end of the buffer tension spring is fixedly connected to the upper end of the cylinder piston.

[0012] As an optimal technical solution, both sides of the fixed plate are slidably connected to both sides of the protective frame, both sides of the fixed plate are fixedly connected to limiting sliders, and limiting grooves are provided on the inner side of the protective frame, and the limiting grooves are slidably connected to the limiting sliders.

[0013] As a preferred technical solution, mounting edges are fixedly connected on both sides of the mounting plate, extension plates are fixedly connected on both sides of the fixed plate, mounting through holes are provided on the surfaces of the extension plates and the mounting edges, mounting screws are inserted into the inside of the mounting through holes, and mounting nuts are threadedly connected to the outer surfaces of the mounting screws.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] First, the utility model sets a protective base. When the hydraulic cylinder is used, the hydraulic cylinder moves toward the inside of the protective frame when the hydraulic cylinder vibrates. When the hydraulic cylinder moves, the adjusting rod moves on the surface of the guide rod under the action of the moving block. When the moving block moves, the protective spring contracts so that the vibration generated by the hydraulic cylinder can be offset. The vibration effect can be further offset under the action of multiple groups of moving grooves and protective springs, so that the protective effect of the protective base is better. At the same time, the elastic force generated by the protective spring can be offset under the action of the damper, so that the hydraulic cylinder can smoothly return to its original position after the shock absorption is completed.

[0016] Secondly, through the set shock-absorbing component, first, when shock absorption is performed through the piston rod, the piston rod pushes the oil cylinder piston to move inside the oil cylinder shell so that the piston rod can achieve the shock absorption effect, and under the movement of the piston rod, the shock-absorbing movable rod can be pushed under the action of the connecting rod and the connecting plate. However, when the shock-absorbing movable rod is pushed, further shock absorption effect can be achieved under the action of the shock-absorbing spring and the auxiliary spring, so that the shock absorption effect can be increased when the hydraulic cylinder is in use, and the multiple buffer rods set inside the oil cylinder shell can cooperate with the buffer spring to further achieve the shock absorption effect, and the vibration effect can be further offset under the action of the buffer tension spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the oil cylinder housing of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the oil cylinder housing of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the protective base of the utility model.

[0021] : 1. Mounting plate; 2. Cylinder housing; 3. Cylinder piston; 4. Piston rod; 5. Protective base; 51. Protective frame; 52. Moving groove; 53. Guide rod; 54. Moving block; 55. Protective spring; 56. Adjusting rod; 57. Fixed plate; 6. Shock-absorbing assembly; 61. Shock-absorbing sleeve rod; 62. Shock-absorbing spring; 63. Shock-absorbing movable rod; 64. Connecting plate; 65. Connecting rod; 66. Auxiliary spring; 7. Buffer rod; 8. Buffer spring; 9. Buffer tension spring; 10. Top plate; 11. Mounting edge; 12. Mounting through hole; 13. Extension plate; 14. Mounting screw; 15. Mounting nut; 16. Limiting slider; 17. Limiting slide groove. DETAILED DESCRIPTION

[0022] Example

[0023] refer to Figures 1 to 4 A shock-absorbing hydraulic cylinder of the present embodiment includes a mounting plate 1, the inner side of the mounting plate 1 is fixedly connected to a cylinder housing 2, a cylinder piston 3 is arranged inside the cylinder housing 2, the upper end of the cylinder piston 3 is fixedly connected to a piston rod 4, the other end of the piston rod 4 passes through the cylinder housing 2 and is fixedly connected to a top plate 10, the inner side of the mounting plate 1 is fixedly connected to a shock-absorbing component 6, the shock-absorbing component 6 passes through the mounting plate 1, and a protective base 5 is arranged at the lower end of the mounting plate 1, the protective base 5 includes a protective frame 51, and a plurality of movable The groove 52, the interior of the movable groove 52 is slidably connected with a movable block 54, the interior of the movable groove 52 is fixedly connected with a guide rod 53, the movable block 54 and the guide rod 53 are slidably plugged into each other, the upper end of the movable block 54 is rotatably connected with an adjusting rod 56, the upper ends of the adjusting rods 56 are rotatably connected with a fixed plate 57, the fixed plate 57 is fixedly connected to the mounting plate 1, the interior of the movable groove 52 is fixedly connected with a protective spring 55, the other end of the protective spring 55 is fixedly connected to the movable block 54, and a damper is fixedly connected between the fixed plate 57 and the protective shell.

[0024] refer to Figure 1-Figure 3The shock absorbing assembly 6 includes a shock absorbing sleeve rod 61 fixedly connected to the upper end of the mounting plate 1, the other end of the shock absorbing sleeve rod 61 passes through the mounting plate 1, a shock absorbing spring 62 is fixedly connected to the inside of the shock absorbing sleeve rod 61, the other end of the shock absorbing spring 62 is fixedly connected to a shock absorbing active rod 63, the other end of the shock absorbing active rod 63 is fixedly connected to a connecting plate 64, the outer side of the connecting plate 64 is fixedly connected to the top plate 10 through a connecting rod 65, and an auxiliary spring 66 is fixedly connected to the upper end of the mounting plate 1, the auxiliary spring 66 is located on the outer side of the shock absorbing sleeve rod 61 and the shock absorbing active rod 63, and the other end of the shock absorbing spring 62 is fixedly connected to the connecting plate 64; under the movement of the piston rod 4, the shock absorbing active rod 63 can be pushed under the action of the connecting rod 65 and the connecting plate 64, but when the shock absorbing active rod 63 is pushed, the shock absorbing effect can be further performed under the action of the shock absorbing spring 62 and the auxiliary spring 66, so that the shock absorbing effect can be increased when the hydraulic cylinder is in use.

[0025] refer to Figure 3 , a plurality of buffer rods 7 are fixedly connected to the inside of the cylinder housing 2, the buffer rod 7 passes through the cylinder piston 3 and is slidably plugged with the cylinder piston 3, a buffer spring 8 is fixedly connected to the lower end of the cylinder housing 2, the other end of the buffer spring 8 is fixedly connected to the lower end of the cylinder piston 3, and a buffer tension spring 9 is fixedly connected to the upper end of the cylinder housing 2. A plurality of buffer tension springs 9 are provided, and the buffer tension springs 9 are provided on the outside of the buffer rod 7, and the other end of the buffer tension spring 9 is fixedly connected to the upper end of the cylinder piston 3; the multiple buffer rods 7 arranged inside the cylinder housing 2 cooperate with the buffer spring 8 to further achieve a shock absorbing effect, and the vibration effect can be further offset under the action of the buffer tension spring 9.

[0026] refer to Figure 4 Both sides of the fixed plate 57 are slidably connected to both sides of the protective frame 51, and both sides of the fixed plate 57 are fixedly connected to the limiting slider 16. The inner side of the protective frame 51 is provided with a limiting slot 17, and the limiting slot 17 and the limiting slider 16 are slidably connected to each other; the setting of the limiting slot 17 and the limiting slider 16 makes it possible to limit the fixed plate 57, thereby avoiding the phenomenon that the adjusting rod 56 is broken due to the poor stability of the fixed plate 57 during use.

[0027] refer to Figure 2 and Figure 4, mounting edges 11 are fixedly connected to both sides of the mounting plate 1, and extension plates 13 are fixedly connected to both sides of the fixing plate 57. Mounting through holes 12 are provided on the surfaces of the extension plate 13 and the mounting edges 11. Mounting screws 14 are inserted into the inside of the mounting through holes 12, and mounting nuts 15 are threadedly connected to the outer surfaces of the mounting screws 14. By placing the mounting plate 1 on the upper end of the fixing plate 57, aligning the mounting edge 11 with the extension edge, and then passing the mounting screws 14 through the mounting through holes 12 and finally fixing them with the mounting nuts 15, the hydraulic cylinder can be installed effectively.

[0028] Principle and advantages of use: When in use, first place the mounting plate 1 on the upper end of the fixing plate 57 to align the mounting edge 11 with the extension edge, then pass the mounting screw 14 through the mounting through hole 12 and finally fix it with the mounting nut 15, so that the hydraulic cylinder can be installed and then the hydraulic cylinder can be used. First, when shock absorption is performed by the piston rod 4, the piston rod 4 pushes the cylinder piston 3 to move inside the cylinder housing 2 so that the piston rod 4 can achieve a shock absorption effect, and under the movement of the piston rod 4, the shock absorption active rod 63 can be pushed under the action of the connecting rod 65 and the connecting plate 64, and when the shock absorption active rod 63 is pushed, further shock absorption can be performed under the action of the shock absorption spring 62 and the auxiliary spring 66 The effect is such that the shock absorbing effect can be increased when the hydraulic cylinder is in use, and when the hydraulic cylinder vibrates, the hydraulic cylinder moves toward the inside of the protective frame 51, and while the hydraulic cylinder moves, the adjusting rod 56 moves on the surface of the guide rod 53 under the action of the moving block 54, and when the moving block 54 moves, the protective spring 55 contracts so that the vibration generated by the hydraulic cylinder can be offset, and the vibration effect can be further offset under the action of multiple groups of moving grooves 52 and the protective spring 55, so that the protective effect of the protective base 5 is better, and at the same time, the elastic force generated by the protective spring 55 can be offset under the action of the damper, so that the hydraulic cylinder can smoothly return to its original position after the shock absorption is completed, thereby achieving an effective protective effect on the hydraulic cylinder.

Claims

1. A shock-absorbing hydraulic cylinder, characterized in that: The invention comprises a mounting plate (1), the inner side of which is fixedly connected to a cylinder housing (2), the interior of which is provided with a cylinder piston (3), the upper end of which is fixedly connected to a piston rod (4), the other end of which passes through the cylinder housing (2) and is fixedly connected to a top plate (10), the inner side of which is fixedly connected to a shock absorbing assembly (6), the shock absorbing assembly (6) passing through the mounting plate (1), the lower end of which is provided with a protective base (5), the protective base (5) comprising a protective frame (51), the interior of which is provided with a plurality of movable grooves (52), The interior of the movable groove (52) is slidably connected with a movable block (54), the interior of the movable groove (52) is fixedly connected with a guide rod (53), the movable block (54) and the guide rod (53) are slidably plugged into each other, the upper end of the movable block (54) is rotatably connected with an adjustment rod (56), the upper end of the adjustment rod (56) is rotatably connected with a fixed plate (57), the fixed plate (57) is fixedly connected to the mounting plate (1), the interior of the movable groove (52) is fixedly connected with a protective spring (55), the other end of the protective spring (55) is fixedly connected to the movable block (54), and a damper is fixedly connected between the fixed plate (57) and the protective shell.

2. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The shock absorbing assembly (6) comprises a shock absorbing sleeve rod (61) fixedly connected to the upper end of the mounting plate (1); the other end of the shock absorbing sleeve rod (61) passes through the mounting plate (1); a shock absorbing spring (62) is fixedly connected to the interior of the shock absorbing sleeve rod (61); the other end of the shock absorbing spring (62) is fixedly connected to a shock absorbing movable rod (63); the other end of the shock absorbing movable rod (63) is fixedly connected to a connecting plate (64); the outer side of the connecting plate (64) is fixedly connected to the top plate (10) via a connecting rod (65).

3. A shock-absorbing hydraulic cylinder according to claim 2, characterized in that: An auxiliary spring (66) is fixedly connected to the upper end of the mounting plate (1), and the auxiliary spring (66) is located outside the shock-absorbing sleeve rod (61) and the shock-absorbing movable rod (63). The other end of the shock-absorbing spring (62) is fixedly connected to the connecting plate (64).

4. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: A plurality of buffer rods (7) are fixedly connected to the interior of the oil cylinder housing (2); the buffer rods (7) penetrate the oil cylinder piston (3) and are slidably plugged with the oil cylinder piston (3); a buffer spring (8) is fixedly connected to the lower end of the interior of the oil cylinder housing (2); the other end of the buffer spring (8) is fixedly connected to the lower end of the oil cylinder piston (3).

5. A shock-absorbing hydraulic cylinder according to claim 4, characterized in that: A buffer tension spring (9) is fixedly connected to the upper end of the oil cylinder housing (2), and a plurality of buffer tension springs (9) are provided. The buffer tension spring (9) is arranged on the outside of the buffer rod (7), and the other end of the buffer tension spring (9) is fixedly connected to the upper end of the oil cylinder piston (3).

6. The shock-absorbing hydraulic cylinder according to claim 1, characterized in that: Both sides of the fixed plate (57) are slidably connected to both sides of the protective frame (51), both sides of the fixed plate (57) are fixedly connected to the limit slider (16), and the inner side of the protective frame (51) is provided with a limit slide groove (17), and the limit slide groove (17) and the limit slider (16) are slidably connected to each other.

7. The shock-absorbing hydraulic cylinder according to claim 1, characterized in that: Both sides of the mounting plate (1) are fixedly connected with mounting edges (11), and both sides of the fixing plate (57) are fixedly connected with extension plates (13). The surfaces of the extension plates (13) and the mounting edges (11) are provided with mounting through holes (12), and mounting screws (14) are inserted into the interior of the mounting through holes (12), and the outer surface of the mounting screws (14) is threadedly connected with mounting nuts (15).

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