A self-lubricating wear-resistant bushing structure for a chain hoist

Abstract

This utility model relates to the field of bushing technology, and in particular to a self-lubricating wear-resistant bushing structure for chain hoists. It includes a bushing, an oil supply structure, and a sealing structure. The oil supply structure includes an oil reservoir with an oil inlet fixedly connected to its upper surface, an oil outlet on its inner bottom surface, a drainage groove on the lower surface of the outlet, and a lubrication groove at the lower end of the drainage groove. The sealing structure includes a cam plate, a fixing block fixedly connected to the side surface of the oil reservoir, a lifting plate movably connected inside the fixing block, a control seat fixedly connected to the upper surface of the lifting plate, a connecting plate fixedly connected to the outer surface of the control seat, and a spring fixedly connected to the inner top of the oil reservoir. This utility model can achieve automatic lubrication, thereby improving the wear resistance of the bushing and preventing excessive wear during contact and friction with the sprocket shaft, ensuring the bushing's performance and avoiding overall failure.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, specifically to a self-lubricating and wear-resistant bushing structure for chain hoists. Background Technology

[0002] Chain elevators are core equipment used in industrial production for vertical or inclined conveying of granular and lumpy materials. The internal bushings serve as the connection and buffering medium between the chain and key components such as sprockets and guide rails, and are important supporting components to ensure the efficient operation of the elevator.

[0003] In the mechanical system of a chain hoist, the bushing, as a key connection and buffer component, is usually subjected to the dual effects of "frictional wear" and "operating condition impact". During long-term use, the contact friction with the shaft makes the bushing prone to excessive wear, eventually leading to its own failure, damage to related components, or even failure of the entire equipment, which seriously affects the use of the chain hoist. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a self-lubricating and wear-resistant bushing structure for chain elevators, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-lubricating wear-resistant bushing structure for a chain hoist, comprising a bushing, and further comprising an oil supply structure and a sealing structure, wherein: The oil supply structure includes an oil reservoir, the lower surface of which is fixedly connected to the outer surface of the bushing, an oil inlet fixedly connected to the upper surface of the oil reservoir, an oil outlet on the inner bottom surface of the oil reservoir, a drainage groove on the lower surface of the oil outlet, and a lubrication groove at the lower end of the drainage groove. The sealing structure includes a cam plate, a fixing block is fixedly connected to the side surface of the oil storage box, a lifting plate is movably connected inside the fixing block, a control seat is fixedly connected to the upper surface of the lifting plate, a connecting plate is fixedly connected to the outer surface of the control seat, a spring is fixedly connected to the inner top of the oil storage box, and the lower end of the spring is in contact with the upper surface of the connecting plate.

[0006] As a preferred embodiment of this utility model, the lower end of the oil outlet extends through the inner bottom of the oil storage box to the inside of the bushing, and the drainage groove is inclined.

[0007] As a preferred embodiment of this utility model, the lower end of the control seat extends through the upper surface of the oil storage box into the interior of the oil storage box, and the lower end of the control seat is provided with a frustum-shaped cone, the outer surface of which is in contact with the upper end of the oil outlet.

[0008] As a preferred embodiment of this utility model, a sprocket shaft is movably connected to the inner surface of the bushing, and the side end of the sprocket shaft is fixedly connected to the side surface of the cam plate.

[0009] As a preferred embodiment of this utility model, a support seat is provided on the outer surface of the bushing, and the interior of the support seat is in contact with the outer surface of the oil storage box.

[0010] As a preferred embodiment of this utility model, the outer surface of the bushing is provided with a connecting hole, and the outer surface of the support base is provided with a fixing hole.

[0011] As a preferred embodiment of this utility model, the internal thread of the fixing hole is connected to a bolt, and one end of the bolt is connected to the internal thread of the connecting hole.

[0012] Compared with the prior art, this utility model provides a self-lubricating and wear-resistant bushing structure for chain elevators, which has the following beneficial effects: This self-lubricating wear-resistant bushing structure for chain elevators utilizes an oil supply and sealing structure. Through the cooperation of the oil outlet, drainage groove, and lubrication groove, lubricating oil from the oil storage box is supplied to the gap between the bushing and the sprocket shaft for lubrication. Then, through the cooperation of the cam plate, control seat, and spring, the lubricating oil is sealed and controlled, ultimately achieving the effect of automatically adding lubricating oil. This improves the wear resistance of the bushing, preventing excessive wear during contact and friction with the sprocket shaft, ensuring the bushing's performance, avoiding overall failure, and facilitating the use of the chain elevator. Attached Figure Description

[0013] Figure 1 This is a first-person perspective schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective; Figure 3 This is a side view of the overall structure of this utility model; Figure 4 This is a partial structural cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the bushing structure of this utility model; Figure 6 This is a sectional front view of the bushing of this utility model; Figure 7 This is a cross-sectional view of the inside of the bushing of this utility model; Figure 8 This utility model Figure 7 Enlarged view of the structure at point A in the middle.

[0014] In the diagram: 1. Bushing; 2. Oil supply structure; 201. Oil reservoir; 202. Oil inlet; 203. Oil outlet; 204. Drainage channel; 205. Lubrication channel; 3. Sealing structure; 301. Cam plate; 302. Fixing block; 303. Lifting plate; 304. Control seat; 305. Connecting plate; 306. Spring; 4. Sprocket shaft; 5. Support seat; 6. Connecting hole; 7. Fixing hole; 8. Bolt. Detailed Implementation

[0015] 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. Example 1

[0016] Please see Figure 1-8 This utility model discloses a self-lubricating wear-resistant bushing structure for a chain hoist, comprising a bushing 1, characterized in that it further includes an oil supply structure 2 and a sealing structure 3, wherein: The oil supply structure 2 includes an oil reservoir 201. The lower surface of the oil reservoir 201 is fixedly connected to the outer surface of the bushing 1. The oil reservoir 201 can store the required lubricating oil in advance. An oil inlet 202 is fixedly connected to the upper surface of the oil reservoir 201. A cover is threaded onto the outer surface of the oil inlet 202 to prevent dust and other impurities from entering the oil reservoir. Lubricating oil can be added to the oil reservoir 201 through the oil inlet 202. An oil outlet 203 is provided on the inner bottom surface of the oil reservoir 201. 03 can discharge the lubricating oil in the oil storage box 201. The lower surface of the oil outlet 203 is provided with a drainage groove 204. The discharged lubricating oil can be guided to the lubrication groove 205 through the drainage groove 204. The lower end of the drainage groove 204 is provided with a lubrication groove 205. When the lubricating oil enters the lubrication groove 205, during the rotation of the sprocket shaft 4, the lubricating oil close to the sprocket shaft 4 falls onto the outer surface of the sprocket shaft 4 due to gravity and is carried away by the sprocket shaft 4, forming a lubricating layer between the outer surface of the sprocket shaft 4 and the inner surface of the bushing 1. The sealing structure 3 includes a cam plate 301. When the sprocket shaft 4 rotates to the upper position, the cam plate 301 pushes the lifting plate 303 upward, thereby driving the control seat 304 upward. A fixing block 302 is fixedly connected to the side surface of the oil reservoir 201. The fixing block 302 restricts the lifting plate 303, ensuring that the lifting plate 303 can only move up and down in a straight line. The lifting plate 303 is movably connected inside the fixing block 302. The lower end of the lifting plate 303 is arc-shaped to facilitate the upward movement of the cam plate 301. The control seat 304 is fixedly connected to the upper surface of the lifting plate 303. When the control seat 304 rises, the oil outlet 203 leaks out, allowing lubricating oil to be discharged. When the control seat 304 descends, it blocks the oil outlet 203 to prevent excessive discharge of lubricating oil. The lubricant supply can be controlled so that the amount of lubricant obtained by the sprocket shaft 4 rotating once is just right, avoiding excessive supply that would cause excess lubricant to be thrown around, resulting in pollution and waste. A connecting plate 305 is fixedly connected to the outer surface of the control seat 304, and a spring 306 is fixedly connected to the inner top of the oil storage box 201. The lower end of the spring 306 is in contact with the upper surface of the connecting plate 305. The spring 306 can apply a downward force to the control seat 304 after the control seat 304 rises, pushing the control seat 304 to move downward. When the control seat 304 contacts the oil outlet 203, the elastic force of the spring 306 itself is not fully released, thereby pushing the control seat 304 so that its lower end tightly blocks the oil outlet 203.

[0017] The lower end of the oil outlet 203 extends through the inner bottom of the oil reservoir 201 into the interior of the bushing 1. The flow channel 204 is inclined, which facilitates the flow of lubricating oil.

[0018] The lower end of the control seat 304 extends through the upper surface of the oil storage box 201 into the interior of the oil storage box 201. The lower end of the control seat 304 is provided with a frustum-shaped cone. The outer surface of the frustum-shaped cone fits against the upper end of the oil outlet 203. The frustum-shaped cone can better adapt to the storage of the oil outlet 203 and make it easy to completely block the oil outlet 203.

[0019] The inner surface of the bushing 1 is movably connected to the sprocket shaft 4. The side end of the sprocket shaft 4 is fixedly connected to the side surface of the cam plate 301. The outer surface of the other end of the sprocket shaft 4 is provided with a sprocket, which can support the rotation of the sprocket through the sprocket shaft 4.

[0020] The outer surface of the bushing 1 is provided with a support seat 5. The interior of the support seat 5 is in contact with the outer surface of the oil reservoir 201. The support seat 5 can provide stable support for the bushing 1, which facilitates the support of the sprocket shaft 4 on the sprocket.

[0021] The outer surface of the bushing 1 has a connecting hole 6, and the outer surface of the support 5 has a fixing hole 7. The connecting hole 6 and the fixing hole 7 are opposite to each other.

[0022] The fixing hole 7 has an internal threaded connection to a bolt 8. One end of the bolt 8 is connected to the internal thread of the connecting hole 6. The bolt 8 can be threaded to the fixing hole 7 and the connecting hole 6 in sequence, which can fix the support 5 and the bushing 1, and facilitate the use of the bushing 1 and the sprocket shaft 4.

[0023] The working principle and usage process of this utility model are as follows: First, install the support base 5 at the corresponding position on the chain hoist, put the bushing 1 into the support base 5, and make the oil storage box 201 snap into the support base 5. At this time, thread the bolt 8 to the fixing hole 7 and the connecting hole 6 respectively to fix the support base 5 and the bushing 1. Then, the sprocket shaft 4 with the sprocket installed is inserted into the bushing 1, and the cam plate 301 is fixedly connected to the side end of the sprocket shaft 4 to complete the overall installation of the bushing 1 structure. Unscrew the cover and add lubricating oil to the oil reservoir 201. After adding the oil, tighten the cover. When the sprocket rotates, the sprocket shaft 4 rotates accordingly. When the sprocket shaft 4 drives the cam plate 301 to rotate upward, the cam part of the cam plate 301 pushes the lower end of the lifting plate 303, causing the lifting plate 303 to rise. The rise of the lifting plate 303 drives the control seat 304 to rise, thereby leaking the oil outlet 203. The oil outlet 203 discharges the lubricating oil from the oil storage box 201 and guides the discharged lubricating oil into the lubrication groove 205 through the diversion groove 204. When the lubricating oil enters the lubrication groove 205, during the rotation of the sprocket shaft 4, the lubricating oil close to the sprocket shaft 4 falls onto the outer surface of the sprocket shaft 4 due to gravity and is carried away by the sprocket shaft 4, thereby forming a lubricating layer between the outer surface of the sprocket shaft 4 and the inner surface of the bushing 1. After the cam plate 301 passes the position of the lifting plate 303, the spring 306 applies a downward force to the control seat 304, pushing the control seat 304 to move downward. When the control seat 304 contacts the oil outlet 203, the elastic force of the spring 306 itself is not completely released, thereby pushing the control seat 304 so that its lower end tightly blocks the oil outlet 203, completing the sequential self-lubrication operation.

[0024] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A chain hoist self-lubricating wear-resistant bushing structure comprising a bushing (1), characterized in that: It also includes an oil supply structure (2) and a sealing structure (3), wherein: The oil supply structure (2) includes an oil storage box (201), the lower surface of the oil storage box (201) is fixedly connected to the outer surface of the bushing (1), the upper surface of the oil storage box (201) is fixedly connected to an oil inlet (202), the inner bottom surface of the oil storage box (201) is provided with an oil outlet (203), the lower surface of the oil outlet (203) is provided with a drainage groove (204), and the lower end of the drainage groove (204) is provided with a lubrication groove (205). The sealing structure (3) includes a cam plate (301), a fixing block (302) is fixedly connected to the side surface of the oil storage box (201), a lifting plate (303) is movably connected inside the fixing block (302), a control seat (304) is fixedly connected to the upper surface of the lifting plate (303), and a connecting plate (305) is fixedly connected to the outer surface of the control seat (304). A spring (306) is fixedly connected to the inner top of the oil storage box (201), and the lower end of the spring (306) is in contact with the upper surface of the connecting plate (305).

2. A self-lubricating wear-resistant bushing structure of a chain hoist according to claim 1, characterized in that: The lower end of the oil outlet (203) extends through the inner bottom of the oil storage box (201) to the inside of the bushing (1), and the diversion groove (204) is inclined.

3. A self-lubricating wear-resistant bushing structure for chain hoist according to claim 1, characterized in that: The lower end of the control seat (304) extends through the upper surface of the oil storage box (201) into the interior of the oil storage box (201). The lower end of the control seat (304) is provided with a frustum-shaped cone, and the outer surface of the frustum-shaped cone is in contact with the upper end of the oil outlet (203).

4. A self-lubricating wear-resistant bushing structure for chain hoist according to claim 1, characterized in that: The inner surface of the bushing (1) is movably connected to a sprocket shaft (4), and the side end of the sprocket shaft (4) is fixedly connected to the side surface of the cam plate (301).

5. A self-lubricating wear-resistant bushing structure for chain hoist according to claim 1, characterized in that: The outer surface of the bushing (1) is provided with a support seat (5), and the interior of the support seat (5) is in contact with the outer surface of the oil storage box (201).

6. A self-lubricating wear-resistant bushing structure of chain hoist according to claim 5, characterized in that: The outer surface of the bushing (1) is provided with a connecting hole (6), and the outer surface of the support base (5) is provided with a fixing hole (7).

7. A self-lubricating wear-resistant bushing structure for chain hoist according to claim 6, characterized in that: The fixing hole (7) is internally threaded with a bolt (8), one end of which is connected to the internal thread of the connecting hole (6).

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