Buffering structure of hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinders, and discloses a hydraulic cylinder buffer structure which comprises a base, a fixed bin is installed at the upper end of the base, a sliding bin is arranged at the upper end of the fixed bin, a fixed seat is installed at the upper end of the sliding bin, a buffer assembly is installed at the lower end of the fixed seat, and a hydraulic cylinder is installed at the upper end of the fixed seat. A hydraulic rod is mounted at the upper end of the hydraulic cylinder, an anti-impact assembly is mounted at the upper end of the hydraulic cylinder, and a top block is arranged at the top end of the hydraulic rod; the buffering assembly comprises a vertical rod, the outer side of the vertical rod is sleeved with a first buffering spring, and a support is installed at the upper end of the base. Impact force borne by the hydraulic cylinder is buffered through the buffering assembly, damage of the impact force to the internal structure of the hydraulic cylinder is effectively reduced, stability is improved, the hydraulic cylinder is prevented from being impacted by the hydraulic rod at the two ends of the stroke through the anti-impact assembly, the stability of equipment is improved, and meanwhile the service life of the hydraulic rod is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder buffer structure. Background Art

[0002] The hydraulic cylinder is the actuator in the hydraulic transmission system. It converts hydraulic energy into mechanical energy and realizes linear reciprocating motion.

[0003] Hydraulic cylinders are commonly used components in mechanical transmission and are widely used in various industrial equipment. During the working process of the hydraulic cylinder, in order to prevent the piston from hitting the cylinder head at both ends of the stroke, a buffer device is usually provided. It is necessary to develop a hydraulic cylinder buffer structure to improve its service life.

[0004] Chinese Patent Publication No.: CN215521449U discloses "A Vehicle Hydraulic Cylinder Buffer Structure", including a cylinder barrel, an oil inlet, an air inlet, a cylinder bottom plate, an earring, an earring bushing ring, an exhaust hole, a nut, a piston rod, a piston, a retaining ring, a sealing ring, a retaining ring, a spring retaining ring, a buffer plunger, a buffer mechanism, a guide sleeve, a dust ring, a cylinder head, a locking nut, a round head steel block, a reset spring, and a retaining ring; the beneficial effects are: the buffer mechanism composed of a steel mesh, a reset spring, an induction plate, a telescopic rod, and a pointed rod accurately and intelligently uses the remaining hydraulic oil to control the deceleration of the piston rod, avoids the collision between the piston rod and the end cover, reduces the impact and noise of the car, and improves the working efficiency of the hydraulic cylinder. The cooperation of the reset spring, the round head steel block and the sealing ring makes exhaust more convenient, the sealing is better, and the service life of the hydraulic cylinder is increased.

[0005] The above-mentioned prior art, a buffer mechanism composed of a steel mesh, a return spring, an induction plate, a telescopic rod, and a pointed rod, accurately and intelligently uses the remaining hydraulic oil to control the deceleration of the piston rod, avoids collision between the piston rod and the end cover, reduces the impact and noise of the car, and improves the working efficiency of the hydraulic cylinder. However, the existing device does not have the function of buffering the hydraulic rod during use. When the hydraulic cylinder faces external force, it cannot effectively reduce the damage of the impact force to the internal structure of the hydraulic cylinder, which reduces the service life of the hydraulic cylinder to a certain extent. Utility Model Content

[0006] The purpose of the utility model is to provide a hydraulic cylinder buffer structure to solve the problem that the above-mentioned background technology does not have the function of buffering the hydraulic rod, and when the hydraulic cylinder faces external force, it cannot effectively reduce the damage of the impact force to the internal structure of the hydraulic cylinder, which reduces the service life of the hydraulic cylinder to a certain extent.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a hydraulic cylinder buffer structure, comprising a base, a fixed bin is installed on the upper end of the base, a sliding bin is arranged on the upper end of the fixed bin, a fixed seat is installed on the upper end of the sliding bin, a buffer assembly is installed on the lower end of the fixed seat, a hydraulic cylinder is installed on the upper end of the fixed seat, a hydraulic rod is installed on the upper end of the hydraulic cylinder, an anti-impact assembly is installed on the upper end of the hydraulic cylinder, and a top block is arranged on the top end of the hydraulic rod;

[0008] The buffer assembly includes a vertical rod, a first buffer spring is sleeved on the outer side of the vertical rod, a bracket is installed on the upper end of the base, a cross bar is installed on one side of the bracket, a moving block is sleeved on the outer side of the cross bar, second buffer springs are installed on both sides of the moving block, and a hinge block is installed on the upper end of the moving block, and a connecting rod is installed on one side of the hinge block;

[0009] The anti-impact component includes a placement bin, a third buffer spring is installed inside the placement bin, a limit block is installed on the upper end of the third buffer spring, sliders are provided on both sides of the limit block, a slide rail is installed on one side of the slider, a telescopic rod is installed on the upper end of the limit block, and an anti-impact block is installed on the upper end of the telescopic rod.

[0010] Preferably, the sliding bin penetrates the fixed bin and extends to the outside thereof, the fixed bin and the sliding bin are slidably connected, and the vertical rods are multiple groups, and the multiple groups of vertical rods are symmetrically arranged at both ends of the first buffer spring.

[0011] Preferably, the brackets are in multiple groups, and the multiple groups of brackets are symmetrically arranged on both sides of the cross bar; the moving blocks are in multiple groups, and the multiple groups of moving blocks are symmetrically arranged on the outer side of the cross bar.

[0012] Preferably, the moving block is slidably connected to the cross bar, the second buffer springs are multiple groups, and both ends of the second buffer springs are detachably connected to the symmetrically arranged moving blocks.

[0013] Preferably, the articulated blocks are in multiple groups, one end of the connecting rod is hinged to the moving block through the articulated block, the other end of the connecting rod is hinged to the fixed seat through the articulated block, and the hydraulic cylinder is detachably arranged on the upper end of the fixed seat.

[0014] Preferably, the placement bins are in multiple groups, and the multiple groups of placement bins are symmetrically arranged at the upper end of the hydraulic cylinder, and the sliding block is slidably connected to the slide rail.

[0015] Preferably, the telescopic rod passes through the placement bin and extends to the outside thereof, and the anti-impact block is detachably arranged at the upper end of the telescopic rod.

[0016] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0017] First, the utility model buffers the impact force received by the hydraulic cylinder through the buffer component, effectively reduces the damage of the impact force to the internal structure of the hydraulic cylinder, improves stability, avoids damage to machines and equipment due to impact, and ensures the safety of production and work. When the hydraulic cylinder is subjected to impact force, the hydraulic cylinder moves, and the movement of the hydraulic cylinder drives the fixed seat to move, and the movement of the fixed seat drives the sliding bin to slide in the fixed bin, and at the same time, the symmetrically arranged vertical rods approach each other, and the first buffer spring limits the movement of the symmetrically arranged vertical rods. At the same time, the movement of the fixed seat presses one end of the connecting rod to change its angle, thereby driving the symmetrically arranged moving blocks to move relative to each other, and the second buffer spring limits the relative movement of the symmetrically arranged moving blocks, thereby buffering the impact force received by the hydraulic cylinder.

[0018] Second, the utility model prevents the hydraulic rod from hitting the hydraulic cylinder at both ends of the stroke by setting up an anti-impact component, thereby improving the stability of the equipment and increasing the service life of the hydraulic rod. When the top block at one end of the hydraulic rod is impacted, the top block presses the anti-impact block to move, the movement of the anti-impact block drives the telescopic rod to move, the movement of the telescopic rod drives the limit block to move, the movement of the limit block causes the slider to slide in the slide rail and presses the third buffer spring at the same time. The third buffer spring limits the moving range of the limit block to prevent the top block from directly hitting the hydraulic cylinder and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 For this utility model Figure 2 A magnified view of the structure at center A;

[0022] Figure 4 It is a structural schematic diagram of the moving block and the second buffer spring of the utility model.

[0023] In the figure: 1. base; 2. fixed bin; 3. sliding bin; 4. fixed seat; 5. buffer assembly; 501. vertical rod; 502. first buffer spring; 503. bracket; 504. cross bar; 505. moving block; 506. second buffer spring; 507. hinge block; 508. connecting rod; 6. hydraulic cylinder; 7. hydraulic rod; 8. top block; 9. anti-impact assembly; 901. placement bin; 902. third buffer spring; 903. limit block; 904. slider; 905. slide rail; 906. telescopic rod; 907. anti-impact block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 The hydraulic cylinder buffer structure comprises a base 1, a fixed bin 2 is mounted on the upper end of the base 1, a sliding bin 3 is arranged on the upper end of the fixed bin 2, a fixed seat 4 is mounted on the upper end of the sliding bin 3, a buffer assembly 5 is mounted on the lower end of the fixed seat 4, a hydraulic cylinder 6 is mounted on the upper end of the fixed seat 4, a hydraulic rod 7 is mounted on the upper end of the hydraulic cylinder 6, an anti-impact assembly 9 is mounted on the upper end of the hydraulic cylinder 6, and a top block 8 is arranged on the top of the hydraulic rod 7; the buffer assembly 5 comprises a vertical rod 501, a first buffer spring 502 is sleeved on the outer side of the vertical rod 501, a bracket 503 is mounted on the upper end of the base 1, a cross bar 504 is mounted on one side of the bracket 503, and the cross bar 50 4 is sleeved with a moving block 505 on the outside, second buffer springs 506 are installed on both sides of the moving block 505, and a hinge block 507 is installed on the upper end of the moving block 505, and a connecting rod 508 is installed on one side of the hinge block 507; the anti-impact component 9 includes a placement bin 901, a third buffer spring 902 is installed inside the placement bin 901, a limit block 903 is installed on the upper end of the third buffer spring 902, sliders 904 are provided on both sides of the limit block 903, a slide rail 905 is installed on one side of the slider 904, a telescopic rod 906 is installed on the upper end of the limit block 903, and an anti-impact block 907 is installed on the upper end of the telescopic rod 906.

[0026] Through the above technical solution, the impact force received by the hydraulic cylinder 6 is buffered by the buffer assembly 5, which effectively reduces the damage to the internal structure of the hydraulic cylinder caused by the impact force, improves stability, avoids damage to machines and equipment due to impact, and ensures the safety of production and work. When the hydraulic cylinder 6 is subjected to the impact force, the hydraulic cylinder 6 moves, and the movement of the hydraulic cylinder 6 drives the fixed seat 4 to move, and the movement of the fixed seat 4 drives the sliding bin 3 to slide in the fixed bin 2. At the same time, the symmetrically arranged vertical rods 501 approach each other, and the first buffer spring 502 limits the movement of the symmetrically arranged vertical rods 501. At the same time, the fixed seat 4 moves to press one end of the connecting rod 508 to change its angle, thereby driving the symmetrically arranged moving blocks 505 to move relatively, and the second buffer spring 50 6 limits the relative movement of the symmetrically arranged moving blocks 505, buffers the impact force on the hydraulic cylinder 6, and prevents the hydraulic rod 7 from hitting the hydraulic cylinder 6 at both ends of the stroke through the anti-impact component 9, thereby improving the stability of the equipment and the service life of the hydraulic rod 7. When the top block 8 at one end of the hydraulic rod 7 is impacted, the top block 8 presses the anti-impact block 907 to move, and the movement of the anti-impact block 907 drives the telescopic rod 906 to move, and the movement of the telescopic rod 906 drives the limit block 903 to move, and the movement of the limit block 903 causes the slider 904 to slide in the slide rail 905, and at the same time presses the third buffer spring 902, and the third buffer spring 902 limits the moving range of the limit block 903, thereby preventing the top block 8 from directly hitting the hydraulic cylinder 6 and causing damage.

[0027] Specifically, the sliding bin 3 penetrates the fixed bin 2 and extends to the outside thereof, the fixed bin 2 and the sliding bin 3 are slidably connected, and the vertical rods 501 are multiple groups, and the multiple groups of vertical rods 501 are symmetrically arranged at both ends of the first buffer spring 502.

[0028] Through the above technical solution, the sliding bin 3 is used to penetrate the fixed bin 2 to protect the internal parts of the buffer assembly 5, thereby improving the stability of the overall structure. When the hydraulic cylinder 6 is subjected to impact force, the hydraulic cylinder 6 moves, and the movement of the hydraulic cylinder 6 drives the fixed seat 4 to move. The movement of the fixed seat 4 drives the sliding bin 3 to slide in the fixed bin 2. At the same time, the symmetrically arranged vertical rods 501 approach each other, and the first buffer spring 502 limits the movement of the symmetrically arranged vertical rods 501 to perform preliminary buffering.

[0029] Specifically, there are multiple groups of brackets 503 , which are symmetrically arranged on both sides of the crossbar 504 ; there are multiple groups of moving blocks 505 , which are symmetrically arranged on the outer side of the crossbar 504 .

[0030] Through the above technical solution, the bracket 503 plays a certain supporting role on the cross bar 504, and at the same time, the second buffer spring 506 is used to limit the relative movement of the symmetrically arranged moving blocks 505 to perform auxiliary buffering and improve the buffering effect.

[0031] Specifically, the moving block 505 is slidably connected to the cross bar 504 , and the second buffer springs 506 are multiple groups, and both ends of the second buffer springs 506 are detachably connected to the symmetrically arranged moving blocks 505 .

[0032] Through the above technical solution, multiple groups of second buffer springs 506 are used to limit the two ends of the moving block 505, thereby improving the buffering effect, effectively reducing the damage of the impact force to the internal structure of the hydraulic cylinder, improving stability, avoiding damage to machines and equipment due to impact, and ensuring the safety of production and work.

[0033] Specifically, the hinge block 507 is a plurality of groups, one end of the connecting rod 508 is hinged to the moving block 505 through the hinge block 507, the other end of the connecting rod 508 is hinged to the fixed seat 4 through the hinge block 507, and the hydraulic cylinder 6 is detachably arranged on the upper end of the fixed seat 4.

[0034] Through the above technical solution, the connecting rod 508 is used to effectively disperse the impact force on the hydraulic cylinder 6 to multiple directions or multiple points instead of concentrating it on one point, thereby reducing the impact force on a single part, thereby extending the service life of the equipment and reducing the failure rate.

[0035] Specifically, there are multiple groups of placement bins 901 , which are symmetrically arranged at the upper end of the hydraulic cylinder 6 , and the slider 904 is slidably connected to the slide rail 905 .

[0036] Through the above technical solution, multiple groups of placement bins 901 facilitate uniform buffering of the impact force on the top block 8, improve stability, avoid the top block 8 from hitting the hydraulic cylinder 6 at both ends of the stroke, and improve the stability of the equipment.

[0037] Specifically, the telescopic rod 906 passes through the placement bin 901 and extends to the outside thereof, and the anti-impact block 907 is detachably provided at the upper end of the telescopic rod 906 .

[0038] Through the above technical solution, when the top block 8 is impacted, the top block 8 presses the anti-impact block 907 to move, the movement of the anti-impact block 907 drives the telescopic rod 906 to move, the movement of the telescopic rod 906 drives the limit block 903 to move, the movement of the limit block 903 causes the slider 904 to slide in the slide rail 905, and at the same time presses the third buffer spring 902, the third buffer spring 902 limits the movement range of the limit block 903, and the slider 904 ensures the stability of the movement of the limit block 903 on the slide rail 905.

[0039] During use, when it is necessary to prevent the top block 8 from directly hitting the hydraulic cylinder 6 and causing damage, when the top block 8 at one end of the hydraulic rod 7 is impacted, the top block 8 presses the anti-impact block 907 to move, the anti-impact block 907 moves to drive the telescopic rod 906 to move, the telescopic rod 906 moves to drive the limit block 903 to move, the limit block 903 moves to make the slider 904 slide in the slide rail 905, and at the same time presses the third buffer spring 902, the third buffer spring 902 limits the movement range of the limit block 903, and prevents the top block 8 from directly hitting the hydraulic cylinder 6. When it is necessary to buffer the impact force on the hydraulic cylinder 6, the hydraulic cylinder 6 is impacted. When force is applied, the hydraulic cylinder 6 moves, and the movement of the hydraulic cylinder 6 drives the fixed seat 4 to move, and the movement of the fixed seat 4 drives the sliding bin 3 to slide in the fixed bin 2. At the same time, the movement of the fixed seat 4 drives the symmetrically arranged vertical rods 501 to approach each other, and the first buffer spring 502 limits the movement of the symmetrically arranged vertical rods 501. At the same time, the movement of the fixed seat 4 presses one end of the connecting rod 508 to move, so that the angle of the connecting rod 508 changes. The change in the angle of the connecting rod 508 drives the symmetrically arranged moving blocks 505 to move relative to each other, and the second buffer spring 506 limits the range of relative movement of the symmetrically arranged moving blocks 505, thereby buffering the impact force exerted on the hydraulic cylinder 6.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder buffer structure, comprising a base (1), characterized in that: A fixed bin (2) is installed at the upper end of the base (1), a sliding bin (3) is provided at the upper end of the fixed bin (2), a fixed seat (4) is installed at the upper end of the sliding bin (3), a buffer assembly (5) is installed at the lower end of the fixed seat (4), a hydraulic cylinder (6) is installed at the upper end of the fixed seat (4), a hydraulic rod (7) is installed at the upper end of the hydraulic cylinder (6), an anti-impact assembly (9) is installed at the upper end of the hydraulic cylinder (6), and a top block (8) is provided at the top end of the hydraulic rod (7); The buffer assembly (5) comprises a vertical rod (501), the outer side of the vertical rod (501) is sleeved with a first buffer spring (502), the upper end of the base (1) is mounted with a bracket (503), one side of the bracket (503) is mounted with a cross bar (504), the outer side of the cross bar (504) is sleeved with a moving block (505), both sides of the moving block (505) are mounted with second buffer springs (506), the upper end of the moving block (505) is mounted with a hinge block (507), and one side of the hinge block (507) is mounted with a connecting rod (508); The anti-impact component (9) comprises a placement bin (901), a third buffer spring (902) is installed inside the placement bin (901), a limit block (903) is installed on the upper end of the third buffer spring (902), sliders (904) are arranged on both sides of the limit block (903), a slide rail (905) is installed on one side of the slider (904), a telescopic rod (906) is installed on the upper end of the limit block (903), and an anti-impact block (907) is installed on the upper end of the telescopic rod (906).

2. The hydraulic cylinder buffer structure according to claim 1, characterized in that: The sliding bin (3) passes through the fixed bin (2) and extends to the outside thereof. The fixed bin (2) and the sliding bin (3) are slidably connected. The vertical rods (501) are multiple groups, and the multiple groups of vertical rods (501) are symmetrically arranged at both ends of the first buffer spring (502).

3. The hydraulic cylinder buffer structure according to claim 1, characterized in that: The brackets (503) are multiple groups, and the multiple groups of brackets (503) are symmetrically arranged on both sides of the cross bar (504). The moving blocks (505) are multiple groups, and the multiple groups of moving blocks (505) are symmetrically arranged on the outer side of the cross bar (504).

4. The hydraulic cylinder buffer structure according to claim 1, characterized in that: The moving block (505) is slidably connected to the cross bar (504), the second buffer springs (506) are multiple groups, and the two ends of the second buffer springs (506) are detachably connected to the symmetrically arranged moving blocks (505).

5. The hydraulic cylinder buffer structure according to claim 1, characterized in that: The hinge blocks (507) are multiple groups, one end of the connecting rod (508) is hinged to the moving block (505) through the hinge block (507), the other end of the connecting rod (508) is hinged to the fixed seat (4) through the hinge block (507), and the hydraulic cylinder (6) is detachably arranged on the upper end of the fixed seat (4).

6. The hydraulic cylinder buffer structure according to claim 1, characterized in that: The placement bins (901) are multiple groups, and the multiple groups of placement bins (901) are symmetrically arranged at the upper end of the hydraulic cylinder (6), and the sliding block (904) is slidably connected to the sliding rail (905).

7. The hydraulic cylinder buffer structure according to claim 1, characterized in that: The telescopic rod (906) passes through the storage bin (901) and extends to the outside thereof, and the anti-impact block (907) is detachably arranged at the upper end of the telescopic rod (906).

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