Improved damping and buffering device for crane

Abstract

The utility model discloses an improved damping buffer device for a crane, which relates to the technical field of crane accessories and comprises a bearing block, a protective shell, a central oil cylinder body and a side oil cylinder body, a central buffer rod is slidably mounted on the central oil cylinder body, a side buffer rod is slidably mounted on the side oil cylinder body, and the top end of the side buffer rod is connected with the bottom end of the bearing block. Damping springs are arranged at the top ends of the bearing blocks and the side oil cylinder bodies. The shock absorption and buffering device mainly depends on efficient matching of the center oil cylinder body and the center buffering rod for supporting and buffering, and meanwhile, the side buffering rods are symmetrically arranged on the two sides of the center buffering rod and play an auxiliary buffering and shock absorption role. The bearing block is limited from sliding out of the protection shell through the sliding block, and the offset in the horizontal direction is reduced through cooperation of the sliding block and the sliding groove. And through cooperation of all the structures, the overall damping and buffering effect of the device is good, and movement in the buffering direction and the displacement direction is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of crane accessories, and more specifically to an improved shock-absorbing and buffering device for cranes. Background Art

[0002] Since the crane itself is very heavy, when the crane's operating limiter or brake device fails, due to inertia, the crane running to the end point will collide with the set stopper at the end point, which may cause a serious safety accident. The purpose of setting a shock-absorbing and buffering device is to absorb the running energy of the crane or trolley, play a role in buffering, reducing vibration, and ensuring safety. The use effect of traditional shock-absorbing and buffering devices is poor, which is specifically reflected in the insufficient supporting force, resulting in a general shock-absorbing and buffering effect after loading. Utility Model Content

[0003] The purpose of the utility model is to solve the above technical problems and provide an improved shock absorbing and buffering device for cranes.

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] An improved shock-absorbing and buffering device for a crane comprises a supporting block, a protective shell, a central oil cylinder body and a side oil cylinder body. A central buffer rod is slidably mounted on the central oil cylinder body, and a side buffer rod is slidably mounted on the side oil cylinder body. The top end of the side buffer rod is connected to the bottom end of the supporting block, and shock-absorbing springs are arranged on the supporting block and the top end of the side oil cylinder body. In an initial state, the top end of the central buffer rod extends through the supporting block and is higher than the top surface of the supporting block. A rubber block with a thickness of 4-8 cm is arranged on the top end of the central buffer rod, and a groove with the same thickness as the rubber block is arranged at a corresponding position of the supporting block. A slide groove is arranged on the inner side surface of the protective shell, and a slider slidably matched with the slide groove is arranged on the side end of the supporting block. The central oil cylinder body is connected with the side oil cylinder body through an oil connecting pipe.

[0006] The improved shock-absorbing and buffering device for cranes in the utility model has a central buffer rod as its core buffering function, and the central buffer rod is mostly made of high-strength steel, so that it can provide sufficient supporting strength after installation and application; the side buffer rods play an auxiliary buffering and shock-absorbing role, and are usually symmetrically installed on both sides of the central buffer rod; the cylinder bodies at the bottom ends of the first sealing plate and the second sealing plate are filled with hydraulic oil, and when the central buffer rod is forced to push the first sealing plate downward, the hydraulic oil of the central oil cylinder body will be transferred to the side oil cylinder body, and at this time, an upward force will be applied to the second sealing plate, thereby enhancing the supporting and buffering effect of the support block; when the support block is displaced, the shock-absorbing spring can also perform shock-absorbing and buffering.

[0007] A better technical solution: rubber plates are arranged at the bottom ends of the central oil cylinder body and the side oil cylinder body to improve the pressure bearing effect through buffering.

[0008] A better technical solution: the supporting block is restricted from sliding out of the protective shell by a slider, and the displacement in the horizontal direction is reduced by the cooperation between the slider and the slide groove.

[0009] A preferred technical solution: A first sealing sheet is arranged at one end of the central buffer rod extending into the central oil cylinder body.

[0010] A preferred technical solution: a second sealing sheet is arranged at one end of the side buffer rod extending into the side oil cylinder body.

[0011] A preferred technical solution: the size and thickness of the first sealing sheet are greater than those of the second sealing sheet.

[0012] A preferred technical solution: The outer side of the protective shell is provided with a visual window for conveniently observing whether there is oil leakage near the central oil cylinder body and the side oil cylinder body.

[0013] A better technical solution: a one-way valve is arranged in the oil connecting pipe, and an oil return pipe is also arranged between the central oil cylinder body and the side oil cylinder body.

[0014] The beneficial effects of the utility model are as follows:

[0015] The shock-absorbing and buffering device in the utility model mainly relies on the efficient cooperation between the central oil cylinder body and the central buffer rod to support the buffering. At the same time, the side buffer rods are symmetrically arranged on both sides of the central buffer rod to play an auxiliary buffering and shock-absorbing role. The support block is restricted from sliding out of the protective shell by the slider, and the horizontal offset is reduced by the slider and the slide groove. Through the cooperation of various structures, the overall shock-absorbing and buffering effect of the device is good, and the displacement direction of the buffering direction moves accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure when the rubber block in the utility model moves down to the groove.

[0018] Figure numerals: 1. supporting block; 11. sliding block; 12. groove; 2. protective shell; 21. slide groove; 3. central oil cylinder body; 31. central buffer rod; 311. rubber block; 312. first sealing plate; 4. side oil cylinder body; 41. side buffer rod; 411. second sealing plate; 5. shock-absorbing spring; 6. rubber plate; 7. oil connecting pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 2 As shown, the present embodiment provides an improved shock-absorbing and buffering device for a crane, comprising a supporting block 1, a protective shell 2, a central oil cylinder body 3, and a side oil cylinder body 4. A central buffer rod 31 is slidably mounted on the central oil cylinder body 3, and a side buffer rod 41 is slidably mounted on the side oil cylinder body 4. The top end of the side buffer rod 41 is connected to the bottom end of the supporting block 1, and a shock-absorbing spring 5 is arranged on the top end of the supporting block 1 and the side oil cylinder body 4. In the initial state, the top end of the central buffer rod 31 extends through the supporting block 1 and is higher than the top surface of the supporting block 1. A rubber block 311 with a thickness of 4-8 cm is arranged on the top end of the central buffer rod 31, and a groove 12 with the same thickness as the rubber block 311 is arranged at the corresponding position of the supporting block 1. A slide groove 21 is arranged on the inner side surface of the protective shell 2, and a slider 11 slidably matched with the slide groove 21 is arranged on the side end of the supporting block 1. The central oil cylinder body 3 is connected to the side oil cylinder body 4 through an oil connecting pipe 7.

[0022] Furthermore, rubber plates 6 are provided at the bottom ends of the central oil cylinder body 3 and the side oil cylinder body 4 .

[0023] Furthermore, the supporting block 1 is restricted from sliding out of the protective shell 2 by the slider 11 , and the displacement in the horizontal direction is reduced by the slider 11 cooperating with the slide groove 21 .

[0024] Furthermore, a first sealing sheet 312 is provided at one end of the central buffer rod 31 extending into the central oil cylinder body 3 .

[0025] Furthermore, a second sealing sheet 411 is provided at one end of the side buffer rod 41 extending into the side oil cylinder body 4 .

[0026] Furthermore, the size and thickness of the first sealing sheet 312 are greater than those of the second sealing sheet 411 .

[0027] Furthermore, a visual window is provided on the outer side of the protective shell 2 for conveniently observing whether there is oil leakage near the central oil cylinder body 3 and the side oil cylinder body 4.

[0028] Furthermore, a one-way valve is arranged in the oil connecting pipe 7, and the flow direction of the one-way valve is from the central oil cylinder body 3 to the side oil cylinder body. A return oil pipe is also arranged between the central oil cylinder body 3 and the side oil cylinder body 4, and a return oil valve is specifically arranged on the return oil pipe, so that the oil in the side oil cylinder body 4 is transferred back to the central oil cylinder body 3.

[0029] During installation, the rubber block 311 contacts the corresponding shock-absorbing and buffering supporting position of the crane; when subjected to force, the rubber block 311 moves down to the groove 12 on the supporting block 1, at which time the supporting block 1 is subjected to force as a whole; then, the central buffer rod 31 pushes the first sealing plate 312 downward, and the hydraulic oil of the central oil cylinder body 3 is transferred to the side oil cylinder body 4, at which time an upward force is applied to the second sealing plate 411 until a balance is reached between the two cylinder bodies; when the central buffer rod 31 is not subjected to force and when subjected to force, the relative offset of the supporting block 1 in the final vertical direction is usually 0.3cm-0.8cm, and the offset is related to the initial oil volume in each cylinder body and the oil pipe.

Claims

1. An improved shock absorbing and buffering device for a crane, characterized in that: It includes a supporting block, a protective shell, a central oil cylinder body and a side oil cylinder body. A central buffer rod is slidably installed on the central oil cylinder body, and a side buffer rod is slidably installed on the side oil cylinder body. The top end of the side buffer rod is connected to the bottom end of the supporting block, and shock-absorbing springs are arranged on the supporting block and the top end of the side oil cylinder body. In the initial state, the top end of the central buffer rod extends through the supporting block and is higher than the top surface of the supporting block. A rubber block with a thickness of 4-8 cm is arranged on the top end of the central buffer rod, and a groove with the same thickness as the rubber block is arranged at the corresponding position of the supporting block. A slide groove is arranged on the inner side surface of the protective shell, and a slider slidably matched with the slide groove is arranged on the side end of the supporting block. The central oil cylinder body is connected with the side oil cylinder body through an oil connecting pipe.

2. The improved shock absorbing and buffering device for crane according to claim 1 is characterized in that: Rubber plates are arranged at the bottom ends of the central oil cylinder body and the side oil cylinder bodies.

3. The improved shock absorbing and buffering device for crane according to claim 1 is characterized in that: The supporting block is restricted from sliding out of the protective shell by the slider, and the displacement in the horizontal direction is reduced by the cooperation between the slider and the slide groove.

4. The improved shock absorbing and buffering device for crane according to claim 1 is characterized in that: A first sealing sheet is arranged at one end of the central buffer rod extending into the central oil cylinder body.

5. The improved shock absorbing and buffering device for crane according to claim 4 is characterized in that: A second sealing sheet is arranged at one end of the side buffer rod extending into the side oil cylinder body.

6. The improved shock absorbing and buffering device for crane according to claim 5, characterized in that: The size and thickness of the first sealing sheet are greater than those of the second sealing sheet.

7. The improved shock absorbing and buffering device for crane according to claim 1 is characterized in that: The outer side surface of the protective shell is provided with a visual window for conveniently observing whether there is oil leakage near the central oil cylinder body and the side oil cylinder body.

8. The improved shock absorbing and buffering device for crane according to claim 1, characterized in that: A one-way valve is arranged in the oil connecting pipe, and an oil return pipe is arranged between the central oil cylinder body and the side oil cylinder body.

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