Winch buffer device for construction machinery

Abstract

The utility model discloses a winch buffer device for construction machinery, which relates to the technical field of construction machinery and comprises a winding component and a buffer component, the buffer component is arranged at the top of a base, a piston is slidably connected in a hydraulic cylinder, a buffer head is arranged between the piston and a support plate, and hydraulic oil is arranged in the hydraulic cylinder. The top of the oil injection assembly and the top of the oil injection box fixedly communicate with a guide pipe, an electromagnetic valve is arranged on the guide pipe, the end, away from the oil injection box, of the guide pipe fixedly communicates with an oil injection head, and a clamping groove is formed in the side, close to the hydraulic cylinder, of the top of the base. When the piston is subjected to impact force and extrudes the hydraulic oil, the hydraulic oil can transmit pressure in the closed hydraulic cylinder, the buffer device can generate stable counter-acting force to buffer the impact force, the hydraulic oil can be supplemented into the hydraulic cylinder in time through the arrangement of the oil injection assembly, and it is guaranteed that the piston is sufficiently lubricated in the hydraulic cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to building machinery technical field, concretely is a winch buffer device for building machinery. BACKGROUND

[0002] The winch in building machinery often needs to frequently hoist and lower heavy objects in the working process, for example, in high-rise building construction, the winch of tower crane needs to hoist building materials such as reinforcing steel, concrete to different heights, in this process, the inertia force of the lifting and lowering speed change of heavy objects will be big, when heavy objects brake quickly, huge impact force will be produced, and this impact force will cause damage to the winding drum, steel wire rope, transmission parts and the whole hoisting system of winch.

[0003] The prior art mostly uses spring buffer to buffer, relies on the expansion of spring to absorb energy, but the energy that it can absorb is relatively limited, when facing high-energy impact or continuous big impact force, it can not completely effectively buffer, compared with hydraulic buffer, the effect is much worse, however, the prior art can not supplement hydraulic oil in the hydraulic cylinder in time, when the hydraulic oil is insufficient, the lubrication effect between the piston and the wall of the hydraulic cylinder becomes poor, the friction increases, and the piston can be stuck in the hydraulic cylinder, so that the buffer is completely ineffective, therefore, we propose a winch buffer device for building machinery. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a winch buffer device for building machinery to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a winch buffer device for building machinery, comprising:

[0006] A base;

[0007] A winding assembly is arranged on the top of the base, and the winding assembly comprises a support plate fixed on the top of the base;

[0008] A buffer assembly is arranged on the top of the base, and the buffer assembly comprises a hydraulic cylinder arranged on the top of the base, a piston slidably connected in the hydraulic cylinder, a buffer head arranged between the piston and the support plate, and hydraulic oil arranged in the hydraulic cylinder;

[0009] An oil injection assembly is arranged on the top of the base, and the oil injection assembly comprises an oil injection tank arranged on the top of the base, a conduit fixedly communicated with the top of the oil injection tank, an electromagnetic valve arranged on the conduit, an oil injection head fixedly communicated with one end of the conduit away from the oil injection tank, a clamping groove formed on one side of the top of the base close to the hydraulic cylinder, and a liquid level sensor arranged in the clamping groove.

[0010] Furthermore, a connecting pipe is fixedly connected to the top of the hydraulic cylinder, a threaded section is provided on the connecting pipe, and a top cover is provided on the top of the connecting pipe. The top cover is threadedly connected to the connecting pipe through the threaded section.

[0011] The above technical solution involves installing a connecting pipe and a top cover to seal the hydraulic cylinder when oil injection is not required, thus preventing hydraulic oil leakage.

[0012] Furthermore, a support assembly is provided on the top of the hydraulic cylinder. The support assembly includes a support rod, and a connector is connected to the top of the support rod. The connector is fixedly connected to the oil injection head.

[0013] The above technical solution involves setting up a support component to fix the oil injection head to the top of the connecting pipe, facilitating oil injection.

[0014] Furthermore, a fixing component is provided on the top of the base near the hydraulic cylinder. The fixing component includes two limiting plates, and four limiting posts are fixedly connected between the two limiting plates. The hydraulic cylinder is located between the four limiting posts.

[0015] The above technical solution involves setting a fixing component to fix the buffer component to the top of the base, which can be linked with the take-up roller.

[0016] Furthermore, a rotating rod is rotatably connected to the support plate, a winding roller is mounted on the rotating rod, and a steel wire rope is sleeved on the winding roller.

[0017] The above technical solution involves setting up a winding assembly to control the movement of the wire rope, thereby lifting the object.

[0018] Furthermore, a power assembly is provided on the top of the base, the power assembly includes a motor, the output end of the motor is fixedly connected to a fixed shaft, and a belt is sleeved between the fixed shaft and the rotating rod.

[0019] The above technical solution involves setting up a power component to drive the winding component to move.

[0020] Furthermore, the take-up roller is provided with an auxiliary component, which includes a slide rail, on which the wire rope is slidably connected, and on which a buffer block is provided, which is slidably connected.

[0021] The above technical solution involves using auxiliary components to buffer the impact force generated on the wire rope.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] In this invention, by setting up a buffer assembly, when the take-up roller is subjected to an impact force, the buffer head transmits the force to the piston. When the piston is subjected to the impact force and squeezes the hydraulic oil, the hydraulic oil will transmit pressure in the closed hydraulic cylinder, which can make the buffer device generate a stable reaction force to buffer the impact force. The setting of the oil injection assembly can replenish the hydraulic oil in the hydraulic cylinder in a timely manner, ensuring that the piston is sufficiently lubricated in the hydraulic cylinder. This solves the problem that most existing technologies use spring-type buffers for buffering, relying on the extension and contraction of the spring to absorb energy. However, the energy that can be absorbed is relatively limited. When facing high-energy impacts or continuous large impact forces, it may not be able to completely and effectively buffer the impact. Compared with hydraulic buffers, the effect is much worse. However, existing technologies cannot replenish the hydraulic oil in the hydraulic cylinder in a timely manner. When the hydraulic oil is insufficient, the lubrication effect between the piston and the hydraulic cylinder wall deteriorates, the friction increases, and the piston may get stuck in the hydraulic cylinder, causing the buffer to completely fail. Attached Figure Description

[0024] Figure 1 This is a front view of a winch buffer device used in construction machinery.

[0025] Figure 2 This is a side view of a winch buffer device used in construction machinery.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0027] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0028] Numbering on the map:

[0029] 1. Base;

[0030] 2. Power components; 21. Motor; 22. Fixed shaft; 23. Belt;

[0031] 3. Rewinding assembly; 31. Support plate; 32. Rotating rod; 33. Rewinding roller; 34. Wire rope;

[0032] 4. Buffer assembly; 41. Hydraulic cylinder; 42. Buffer head; 43. Piston;

[0033] 5. Oil filling assembly; 51. Oil filling tank; 52. Conduit; 53. Solenoid valve; 54. Oil filling head; 55. Connecting pipe; 56. Threaded section; 57. Top cover; 58. Slot;

[0034] 6. Support components; 61. Support rods; 62. Connectors;

[0035] 7. Fixing components; 71. Limiting plate; 72. Limiting post;

[0036] 8. Auxiliary components; 81. Slide rail; 82. Buffer block. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] like Figures 1-3 As shown, this utility model provides a technical solution: a winch buffer device for construction machinery, comprising:

[0039] Base 1;

[0040] The winding assembly 3 is placed on top of the base 1 and includes a support plate 31 fixed to the top of the base 1.

[0041] The buffer assembly 4 is placed on the top of the base 1. The buffer assembly 4 includes a hydraulic cylinder 41 disposed on the top of the base 1. A piston 43 is slidably connected inside the hydraulic cylinder 41. A buffer head 42 is disposed between the piston 43 and the support plate 31. Hydraulic oil is disposed inside the hydraulic cylinder 41.

[0042] Oil injection assembly 5 is placed on the top of base 1. Oil injection assembly 5 includes oil injection tank 51 set on the top of base 1. A conduit 52 is fixedly connected to the top of oil injection tank 51. A solenoid valve 53 is set on the conduit 52. An oil injection head 54 is fixedly connected to the end of conduit 52 away from oil injection tank 51. A slot 58 is opened on the side of the top of base 1 near hydraulic cylinder 41. A liquid level sensor is set in the slot 58.

[0043] Specifically, when the winding assembly 3 is subjected to an external impact force, it acts on the buffer head 42. The buffer head 42 transmits the force to the piston 43. Under the action of the impact force, the piston 43 moves into the hydraulic cylinder 41. Since the hydraulic oil is inside the closed hydraulic cylinder 41, the pressure is evenly transmitted in all directions. During the movement of the piston 43, the hydraulic oil flows from one side of the piston 43 to the other through the pre-designed oil passages inside the hydraulic cylinder 41. During this process, the flow of hydraulic oil is subject to resistance. This resistance generates a force opposite to the direction of movement of the piston 43, which is the buffer force. As the piston 43 moves... The flow and pressure changes of hydraulic oil gradually dissipate the energy of the impact force, causing the object's speed to gradually decrease and eventually achieve a smooth stop, avoiding the huge impact caused by sudden stopping. After the piston 43 moves to a certain position, when the impact force disappears or weakens, the pressure of the hydraulic oil will cause the piston 43 to return to the initial position, preparing for the next buffering operation. The liquid level sensor in the slot 58 can detect the hydraulic oil level in real time. When the level is too low, the solenoid valve 53 is opened to inject the hydraulic oil in the oil tank 51 into the oil head 54 through the conduit 52, and then into the hydraulic cylinder 41 through the oil head 54.

[0044] Furthermore, such as Figure 1 and Figure 2 As shown: A power assembly 2 is provided on the top of the base 1. The power assembly 2 includes a motor 21. A fixed shaft 22 is fixedly connected to the output end of the motor 21. A belt 23 is sleeved between the fixed shaft 22 and the rotating rod 32. A rotating rod 32 is rotatably connected to the support plate 31. A take-up roller 33 is provided on the rotating rod 32. A wire rope 34 is sleeved on the take-up roller 33. When the motor 21 is turned on, the fixed shaft 22 is driven to rotate. The fixed shaft 22 drives the rotating rod 32 to rotate through the belt 23. The rotating rod 32 drives the take-up roller 33 to rotate, thereby driving the wire rope 34 to retract.

[0045] The above solution also has a problem: when oil injection is not required, and the hydraulic cylinder 41 is not in a sealed state, internal hydraulic oil leakage may occur, such as... Figure 3 As shown: A connecting pipe 55 is fixedly connected to the top of the hydraulic cylinder 41. A threaded section 56 is provided on the connecting pipe 55. A top cover 57 is provided on the top of the connecting pipe 55. The top cover 57 is threadedly connected to the connecting pipe 55 through the threaded section 56. By setting the connecting pipe 55 and the top cover 57, the inside of the hydraulic cylinder 41 is sealed when oil injection is not required to prevent hydraulic oil leakage.

[0046] The above solution also has the problem that the oil filling head 54 cannot be fixed directly above the connecting pipe 55, such as... Figure 3As shown: A support assembly 6 is provided on the top of the hydraulic cylinder 41. The support assembly 6 includes a support rod 61. A connector 62 is connected to the top of the support rod 61. The connector 62 is fixedly connected to the oil injection head 54. By providing the support assembly 6, the oil injection head 54 is fixed to the top of the connecting pipe 55, which facilitates oil injection.

[0047] Furthermore, such as Figure 1 As shown: A fixing component 7 is provided on the top side of the base 1 near the hydraulic cylinder 41. The fixing component 7 includes a limiting plate 71. There are two limiting plates 71. A limiting post 72 is fixedly connected between the two limiting plates 71. There are four limiting posts 72. The hydraulic cylinder 41 is located between the four limiting posts 72. By setting the fixing component 7, the buffer component 4 is fixed on the top of the base 1 and can be linked with the take-up roller 33.

[0048] Furthermore, such as Figure 4 As shown: An auxiliary component 8 is provided on the take-up roller 33. The auxiliary component 8 includes a slide rail 81. The wire rope 34 is slidably connected to the slide rail 81. A buffer block 82 is provided on the wire rope 34. The buffer block 82 is slidably connected to the wire rope 34. By setting the auxiliary component 8, the impact force generated on the wire rope 34 is buffered.

[0049] The working principle of this utility model is as follows: First, the motor 21 is turned on to drive the fixed shaft 22 to rotate. The fixed shaft 22 drives the rotating rod 32 to rotate via the belt 23. The rotating rod 32 drives the winding roller 33 to rotate, thereby causing the wire rope 34 to retract. When an impact force is generated on the wire rope 34 during a sudden stop, the buffer block 82 can absorb part of the impact force for buffering. When the winding assembly 3 is subjected to external impact force, it will act on the buffer head 42. The buffer head 42 transmits the force to the piston 43. Under the action of the impact force, the piston 43 moves into the hydraulic cylinder 41. Since the hydraulic oil is in the closed hydraulic cylinder 41, the pressure will be evenly transmitted in all directions. During the movement of the piston 43, the hydraulic oil flows from one side of the piston 43 to the other side through the pre-designed oil passages in the hydraulic cylinder 41. During this process, the flow of hydraulic oil will be subject to resistance. This resistance generates a force opposite to the direction of piston 43's movement, which is the buffering force. As piston 43 moves, the flow and pressure changes of hydraulic oil gradually consume the energy of the impact force, causing the object's speed to gradually decrease and eventually achieve a smooth stop, avoiding the huge impact caused by sudden stopping. After piston 43 moves to a certain position, when the impact force disappears or weakens, the pressure of hydraulic oil will cause piston 43 to return to its initial position, ready for the next buffering operation. The liquid level sensor in the slot 58 can detect the hydraulic oil level in real time. When the level is too low, the solenoid valve 53 is opened to inject the hydraulic oil in the oil tank 51 into the oil head 54 through the conduit 52. Then, the top cover 57 is unscrewed from the connecting pipe 55, allowing the hydraulic oil to be injected into the hydraulic cylinder 41 through the connecting pipe 55. Finally, the top cover 57 is screwed back on for sealing.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A hoist buffer device for construction machinery, characterized in that, include: Base (1); A winding assembly (3) is placed on top of a base (1) and includes a support plate (31) fixed to the top of the base (1). A buffer assembly (4) is placed on top of a base (1). The buffer assembly (4) includes a hydraulic cylinder (41) disposed on top of the base (1). A piston (43) is slidably connected inside the hydraulic cylinder (41). A buffer head (42) is disposed between the piston (43) and the support plate (31). Hydraulic oil is disposed inside the hydraulic cylinder (41). The oil injection assembly (5) is placed on the top of the base (1). The oil injection assembly (5) includes an oil tank (51) set on the top of the base (1). A conduit (52) is fixedly connected to the top of the oil tank (51). A solenoid valve (53) is provided on the conduit (52). An oil injection head (54) is fixedly connected to one end of the conduit (52) away from the oil tank (51). A slot (58) is opened on the side of the top of the base (1) near the hydraulic cylinder (41). A liquid level sensor is provided in the slot (58).

2. A hoist buffer device for construction machinery according to claim 1, characterized in that: The top of the hydraulic cylinder (41) is fixedly connected to a connecting pipe (55), the connecting pipe (55) has a threaded section (56), and the top of the connecting pipe (55) is provided with a top cover (57), which is threadedly connected to the connecting pipe (55) through the threaded section (56).

3. A hoist buffer device for construction machinery according to claim 1, characterized in that: The hydraulic cylinder (41) is provided with a support assembly (6) on top. The support assembly (6) includes a support rod (61). A connector (62) is connected to the top of the support rod (61). The connector (62) is fixedly connected to the oil injection head (54).

4. A hoist buffer device for construction machinery according to claim 1, characterized in that: A fixing component (7) is provided on the top of the base (1) near the side of the hydraulic cylinder (41). The fixing component (7) includes a limiting plate (71). There are two limiting plates (71). A limiting post (72) is fixedly connected between the two limiting plates (71). There are four limiting posts (72). The hydraulic cylinder (41) is located between the four limiting posts (72).

5. A hoist buffer device for construction machinery according to claim 1, characterized in that: A rotating rod (32) is rotatably connected to the support plate (31), a winding roller (33) is provided on the rotating rod (32), and a wire rope (34) is sleeved on the winding roller (33).

6. A hoist buffer device for construction machinery according to claim 5, characterized in that: The base (1) is provided with a power assembly (2) on top. The power assembly (2) includes a motor (21). The output end of the motor (21) is fixedly connected to a fixed shaft (22). A belt (23) is sleeved between the fixed shaft (22) and the rotating rod (32).

7. A winch buffer device for construction machinery according to claim 5, characterized in that: An auxiliary component (8) is provided on the take-up roller (33). The auxiliary component (8) includes a slide rail (81). The wire rope (34) is slidably connected to the slide rail (81). A buffer block (82) is provided on the wire rope (34). The buffer block (82) is slidably connected to the wire rope (34).

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