Buffering device of hydraulic hoist

Abstract

The utility model discloses a buffer device of a hydraulic hoist, and relates to the technical field of hydraulic hoists, the buffer device comprises a hydraulic cylinder body, the output end of the hydraulic cylinder body is connected with a piston rod in a sliding manner, and the periphery of the piston rod is provided with a buffer mechanism; the buffering mechanism comprises a first buffering assembly and a second buffering assembly, and further comprises an adaptive mounting pad and a protective rubber sleeve, the first buffering assembly is located above the second buffering assembly, a bearing ring is arranged above the first buffering assembly, the first buffering assembly and the second buffering assembly are used for buffering and damping, the adaptive mounting pad is used for mounting and fixing, and the protective rubber sleeve is arranged on the bearing ring. The protective rubber sleeve is used for preventing dust. The whole structure can be finally simplified, complex buffer mechanism arrangement in the cylinder is avoided, meanwhile, installation and maintenance are easier, and the cylinder body does not need to be disassembled to the inside for operation; dust is prevented from entering, and the adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic hoists, in particular to a buffer device of a hydraulic hoist. Background Art

[0002] The hydraulic gate hoist is generally composed of a hydraulic system and a hydraulic cylinder. Under the control of the hydraulic system, it can open and close the orifice. In order to reduce the noise when the hydraulic gate hoist is in use and to prevent impact when the piston or gate of the hydraulic gate hoist moves to the terminal position, a buffer device is required.

[0003] The publication number is CN214698604U, which discloses a buffering and anti-rust device for a long-stroke hydraulic gate hoist, including a cylinder body, a piston is provided on the inner side of the cylinder body, a first magnetic block is provided on one side of the outer surface of the piston, a first magnetic ring is provided on the outer surface of the piston away from the first magnetic block, a piston rod is fixedly connected to the end of the outer surface of the piston close to the first magnetic ring, and the piston rod is located on the inner side of the first magnetic ring, a first rubber sleeve is provided on the outer surface of the piston rod, a first compression spring is fixedly connected to the inner side of the first rubber sleeve, and a second magnetic ring is fixedly connected to the end of the outer surface of the first rubber sleeve close to the piston. In the utility model, the compression spring is installed inside the rubber sleeve, which can not only prevent the compression spring from being corroded and rusted, but also ensure the overall buffering performance. At the same time, the overall buffering performance is further improved by the provision of magnetic rings and magnetic blocks.

[0004] During use, since the buffer device is placed in the cylinder of the hydraulic gate opening machine, the spring in the buffer device will be deformed after long-term use, and the magnetic force will be reduced under high-pressure environment, requiring regular inspection and replacement, thereby increasing the cost and time of maintenance, and the cylinder body needs to be disassembled during maintenance. Utility Model Content

[0005] The utility model provides a buffer device for a hydraulic hoist, which has the advantage of easy maintenance and solves the problems raised in the background technology.

[0006] In order to achieve the purpose of easy maintenance, the utility model provides the following technical solutions: a buffer device of a hydraulic hoist, comprising a hydraulic cylinder body, the output end of the hydraulic cylinder body is slidably connected with a piston rod, and the periphery of the piston rod is provided with a buffer mechanism;

[0007] The buffer mechanism includes a buffer component 1 and a buffer component 2, and also includes an adapter mounting pad and a protective rubber sleeve. The buffer component 1 is located above the buffer component 2, and a receiving ring is arranged above the buffer component 1. The buffer component 1 and the buffer component 2 are used for buffering and shock absorption, the adapter mounting pad is used for installation and fixation, and the protective rubber sleeve is used for dust prevention.

[0008] As a preferred technical solution of the present utility model, the buffer component 1 includes an arc-shaped plate, one side of the arc-shaped plate is fixedly connected to an M-shaped part, the inside of the M-shaped part is fixedly connected to a spring 1, one end of the spring 1 away from the M-shaped part is fixedly connected to one side of the arc-shaped plate, and the side of the arc-shaped plate away from the M-shaped part fits the periphery of the piston rod.

[0009] As a preferred technical solution of the utility model, the upper and lower ends of the M-shaped member are fixedly connected with a primary shock-absorbing ring 1, and the side of the primary shock-absorbing ring 1 away from the M-shaped member is attached with a secondary shock-absorbing ring.

[0010] As a preferred technical solution of the utility model, the second buffer component includes a mounting base, the mounting base and the receiving ring are symmetrical to each other, a primary shock-absorbing ring 2 is attached to the top of the mounting base, a connector is provided between the primary shock-absorbing ring 2 and the mounting base, the connector is plugged into the top of the mounting base, and a spring 2 is surrounded at the lower end of the connector.

[0011] As a preferred technical solution of the utility model, the side of the mounting base opposite to the receiving ring is provided with a second primary damping ring, a connector and a second spring.

[0012] As a preferred technical solution of the utility model, the adapter mounting pad is threadedly connected below the mounting base, the lower end of the protective rubber sleeve is bonded to the periphery of the mounting base, and the upper end of the protective rubber sleeve is bonded to the periphery of the receiving ring.

[0013] As a preferred technical solution of the utility model, the lower end of the adapter mounting pad is threadedly connected to the output end surface of the hydraulic cylinder body.

[0014] Compared with the prior art, the utility model provides a buffer device for a hydraulic hoist, which has the following beneficial effects:

[0015] 1. The buffer device of the hydraulic gate opener is provided with a buffer mechanism and its included objects. First, the buffer mechanism is integrally sleeved on the outer wall of the piston rod, and is fixedly connected to the outer wall of the hydraulic cylinder body through the adapter mounting pad at the bottom of the mounting base. Therefore, when the hydraulic cylinder body retracts the piston rod, the connecting block at the top of the piston rod hits the receiving ring and cooperates with the buffer component 1 and the buffer component 2 to perform shock absorption and buffering. Finally, the overall structure can be simplified, and the complicated buffer mechanism setting in the cylinder is avoided. At the same time, it is also easier to install and maintain, and there is no need to disassemble the cylinder body to operate inside.

[0016] 2. The buffer device of the hydraulic gate hoist is provided with an adapter mounting pad, a buffer component 1, a buffer component 2, and a protective rubber sleeve. When the bottom of the mounting base and the telescopic port of the hydraulic cylinder body are fixed by the adapter mounting pad, the adapter mounting pad of the corresponding thickness can be selected in advance to adapt to the contraction range of different hydraulic gate hoists. The protective rubber sleeve prevents dust from entering the buffer component 1 and the buffer component 2 from the outside, thereby increasing their service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 A schematic diagram of the overall structure of the buffer mechanism of the utility model;

[0019] Figure 3 A schematic diagram of the external structures of the buffer component 1 and the buffer component 2 of the utility model;

[0020] Figure 4 A schematic diagram of the internal structure of the second buffer component of the utility model;

[0021] Figure 5 A schematic diagram of the internal structure of a buffer component of the utility model.

[0022] In the figure: 1. hydraulic cylinder body; 2. piston rod; 3. buffer mechanism; 31. buffer component one; 311. arc plate; 312. M-shaped part; 313. spring one; 314. primary shock-absorbing ring one; 315. secondary shock-absorbing ring; 32. buffer component two; 321. mounting base; 322. primary shock-absorbing ring two; 323. connector; 324. spring two; 33. receiving ring; 34. adapter mounting pad; 35. protective rubber sleeve. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 The utility model discloses a buffer device for a hydraulic gate hoist, comprising a hydraulic cylinder body 1, a piston rod 2 is slidably connected to the output end of the hydraulic cylinder body 1, and a buffer mechanism 3 is arranged on the periphery of the piston rod 2; the hydraulic cylinder body 1 is a common hydraulic gate hoist, and the piston rod 2 is a telescopic rod of the hydraulic gate hoist;

[0025] The buffer mechanism 3 includes a buffer component 1 31 and a buffer component 2 32, and also includes an adapter mounting pad 34 and a protective rubber sleeve 35. The buffer component 1 31 is located above the buffer component 2 32. A receiving ring 33 is arranged above the buffer component 1 31. The buffer component 1 31 and the buffer component 2 32 are used for buffering and shock absorption. The adapter mounting pad 34 is used for installation and fixing, and the protective rubber sleeve 35 is used for dust prevention. The protective rubber sleeve 35 is made of foldable rubber material. The adapter mounting pad 34 is composed of a rubber foot pad and threaded rods above and below the rubber gasket.

[0026] Specifically, the buffer assembly 31 includes an arc plate 311, one side of the arc plate 311 is fixedly connected to an M-shaped part 312, the inside of the M-shaped part 312 is fixedly connected to a spring 313, one end of the spring 313 away from the M-shaped part 312 is fixedly connected to one side of the arc plate 311, and the side of the arc plate 311 away from the M-shaped part 312 fits the periphery of the piston rod 2.

[0027] In this embodiment, the arc plate 311 is similar to a rubber foot pad for increasing friction with the outer periphery of the piston rod 2, and one end of the M-shaped member 312 is plugged and fixed on one side of the arc plate 311; since the M-shaped member 312 is in an "M" shape, the middle part thereof will bend inward under the upper and lower pressures for shock absorption, and during the bending process, the spring 1 313 will be squeezed for further shock absorption and buffering.

[0028] Specifically, the upper and lower ends of the M-shaped member 312 are fixedly connected with a primary shock absorbing ring 314 , and the side of the primary shock absorbing ring 314 away from the M-shaped member 312 is attached with a secondary shock absorbing ring 315 .

[0029] In the present embodiment, the primary damping ring 314 and the secondary damping ring 315 are both present at the upper and lower ends of the M-shaped member 312 and are symmetrically distributed, wherein the secondary damping ring 315 above the M-shaped member 312 will contact the primary damping ring 322 below the receiving ring 33, while the secondary damping ring 315 below the M-shaped member 312 will be released from the primary damping ring 322 above the mounting base 321; the primary damping ring 314 and the secondary damping ring 315 are both formed into a ring shape by a plurality of bent iron sheets that are clamped or welded to each other, thereby facilitating replacement and maintenance, wherein the thickness and width of the primary damping ring 314 are both smaller than those of the secondary damping ring 315 and are used for hierarchical damping; the primary damping ring 314 and the secondary damping ring 315 are ring-shaped as a whole, and have a certain upward and downward tortuous bends, so there is a certain gap between the two.

[0030] Specifically, the buffer component 2 32 includes a mounting base 321, and the mounting base 321 and the receiving ring 33 are symmetrical to each other. A primary shock-absorbing ring 2 322 is attached to the top of the mounting base 321, and a connector 323 is provided between the primary shock-absorbing ring 2 322 and the mounting base 321. The connector 323 is plugged into the top of the mounting base 321, and a spring 2 324 is surrounded at the lower end of the connector 323.

[0031] In this embodiment, the shape and structure of the primary shock absorbing ring 2 322 are consistent with those of the primary shock absorbing ring 1 314; the connector 323 is composed of a plate and a fixedly connected vertical rod, and the spring 2 324 is surrounded by the periphery of the vertical rod.

[0032] Specifically, the side of the mounting base 321 opposite to the receiving ring 33 is provided with a primary shock absorbing ring 2 322 , a connector 323 and a spring 2 324 .

[0033] In this embodiment, the mounting base 321 is completely consistent with the receiving ring 33 and is symmetrical up and down. There is also a primary shock-absorbing ring 322, a connector 323 and a spring 324 below the receiving ring 33, and the functions are also consistent with the buffer assembly 31 as a whole. However, the receiving ring 33 is initially in contact with the connecting block at the end of the piston rod 2 and transmits force to the lower level.

[0034] Specifically, the adapter mounting pad 34 is threadedly connected to the bottom of the mounting base 321 , the lower end of the protective rubber sleeve 35 is bonded to the periphery of the mounting base 321 , and the upper end of the protective rubber sleeve 35 is bonded to the periphery of the receiving ring 33 .

[0035] In this embodiment, there is a mounting ring on the periphery of the receiving ring 33 and the mounting base 321, so that the protective rubber sleeve 35 can be bonded and fixed.

[0036] Specifically, the lower end of the adapter mounting pad 34 is threadedly connected to the output end surface of the hydraulic cylinder body 1 .

[0037] In this embodiment, threaded holes are provided at the output end surface of the hydraulic cylinder body 1 and the lower end surface of the mounting base 321 for connecting the adapter mounting pad 34 .

[0038] The working principle and use process of this utility model:

[0039] When the hydraulic cylinder body 1 contracts the piston rod 2, the piston rod 2 enters the interior of the hydraulic cylinder body 1, and the connecting block at the top of the piston rod 2 contacts the receiving ring 33 for buffering, and the buffer assembly 1 31 and the buffer assembly 2 32 are used for hierarchical buffering;

[0040] When the receiving ring 33 is moved downward by the force, the primary damping ring 2 322 below the receiving ring 33 will be deformed and buffered first, and then the primary damping ring 1 314 and the secondary damping ring 315 above the arc plate 311 will be moved downward and deformed. During the deformation process, the M-shaped member 312 will also be deformed and the spring 1 313 inside the M-shaped member 312 will be squeezed laterally. This squeezing will make the arc plate 311 continuously fit the outer wall of the piston rod 2 to perform preliminary damping and buffering.

[0041] After the force is transmitted through the receiving ring 33 and the buffer assembly 1 31, the primary shock absorbing ring 2 322 above the mounting base 321 will be deformed. The deformation of the primary shock absorbing ring 2 322 will cause the connector 323 at the gap between the primary shock absorbing ring 2 322 and the mounting base 321 to move downward and be plugged into the inside of the mounting base 321. At this time, the spring 2 324 will be contracted to complete the secondary buffering and shock absorption.

[0042] During the buffering process, the receiving ring 33 moves downward, causing the objects above the buffer component 1 31 and the buffer component 2 32 to deform, and the protective rubber sleeve 35 around the receiving ring 33 and the mounting base 321 will also fold accordingly, thereby preventing dust from entering;

[0043] When installing the buffer mechanism 3, firstly connect the upper part of the adapter mounting pad 34 to the threaded hole below the mounting base 321, and the lower part of the adapter mounting pad 34 to the threaded hole on the outer wall of the output end of the hydraulic cylinder body 1, and then rotate the adapter mounting pad 34 with a tool to complete the connection between the buffer mechanism 3 and the hydraulic cylinder body 1.

[0044] Although 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 of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A buffer device for a hydraulic hoist, comprising a hydraulic cylinder (1), characterized in that: The output end of the hydraulic cylinder body (1) is slidably connected to a piston rod (2), and a buffer mechanism (3) is arranged on the periphery of the piston rod (2); The buffer mechanism (3) comprises a buffer component 1 (31) and a buffer component 2 (32), and also comprises an adaptor mounting pad (34) and a protective rubber sleeve (35); the buffer component 1 (31) is located above the buffer component 2 (32); a receiving ring (33) is arranged above the buffer component 1 (31); the buffer component 1 (31) and the buffer component 2 (32) are used for buffering and shock absorption; the adaptor mounting pad (34) is used for installation and fixing; and the protective rubber sleeve (35) is used for dust prevention.

2. The buffer device of the hydraulic hoist according to claim 1 is characterized in that: The buffer component 1 (31) comprises an arc-shaped plate (311), one side of the arc-shaped plate (311) is fixedly connected to an M-shaped member (312), the interior of the M-shaped member (312) is fixedly connected to a spring 1 (313), one end of the spring 1 (313) away from the M-shaped member (312) is fixedly connected to one side of the arc-shaped plate (311), and the side of the arc-shaped plate (311) away from the M-shaped member (312) fits the periphery of the piston rod (2).

3. A buffer device for a hydraulic hoist according to claim 2, characterized in that: The upper and lower ends of the M-shaped member (312) are fixedly connected with a primary shock absorbing ring (314), and the side of the primary shock absorbing ring (314) away from the M-shaped member (312) is attached with a secondary shock absorbing ring (315).

4. The buffer device of the hydraulic hoist according to claim 1 is characterized in that: The second buffer component (32) includes a mounting base (321), the mounting base (321) and the receiving ring (33) are symmetrical to each other, a primary shock-absorbing ring (322) is attached to the top of the mounting base (321), a plug-in component (323) is provided between the primary shock-absorbing ring (322) and the mounting base (321), the plug-in component (323) is plugged into the top of the mounting base (321), and a spring (324) is wrapped around the lower end of the plug-in component (323).

5. The buffer device of the hydraulic hoist according to claim 4 is characterized in that: The side of the mounting base (321) opposite to the receiving ring (33) is provided with a primary shock absorbing ring 2 (322), a plug-in component (323) and a spring 2 (324).

6. The buffer device of the hydraulic hoist according to claim 1, characterized in that: The adaptor mounting pad (34) is threadedly connected to the bottom of the mounting base (321), the lower end of the protective rubber sleeve (35) is bonded to the periphery of the mounting base (321), and the upper end of the protective rubber sleeve (35) is bonded to the periphery of the receiving ring (33).

7. The buffer device of the hydraulic hoist according to claim 1 is characterized in that: The lower end of the adapter mounting pad (34) is threadedly connected to the output end surface of the hydraulic cylinder body (1).

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