Elevator convenient to lubricate

Abstract

The utility model relates to the technical field of elevators, and discloses an elevator convenient to lubricate, which comprises an elevator main body, a lubricating mechanism is arranged in the elevator main body, the lubricating mechanism comprises an electric telescopic rod, a connecting rod is fixedly arranged at the output end of the electric telescopic rod, two fixing blocks are fixedly arranged outside the connecting rod, and the two fixing blocks are fixedly connected with the electric telescopic rod. Rotating blocks are rotationally arranged at the lower ends of the two fixing blocks correspondingly, first pistons are rotationally arranged at the lower ends of the two rotating blocks correspondingly, two second fixing cylinders are fixedly arranged at the upper end of the interior of the elevator body, and an oil storage tank is fixedly arranged at the upper end of the elevator body; a second piston is fixedly arranged on the side, away from the electric telescopic rod, of the connecting rod. According to the utility model, the whole lubricating process is completely driven by the electric telescopic rod, and the electric telescopic rod is matched with the control panel to realize timing and quantitative lubrication, so that the manual maintenance frequency is reduced, the equipment operation efficiency is improved, the lubricating oil can be recycled, and the energy consumption and the operation cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, and in particular to a hoisting machine that is easy to lubricate. Background Technology

[0002] Hoists are large mechanical devices that transport materials by changing their potential energy. They mainly include mine hoists, dam hoists, and other types. In a broader sense, elevators, overhead cranes, winches, slewing machines, cranes, gate hoists, etc. can all be called hoists. As an important piece of equipment in modern industrial production, hoists are widely used in mining, construction, manufacturing and other fields.

[0003] An existing patent (publication number: CN216836944U) discloses that "this utility model relates to the field of transportation equipment and discloses a lubrication device for a hoist, including a hoist body. Two symmetrically arranged connecting plates are fixedly connected to the upper end of the hoist body. Two inserts that match the chains on the hoist body are fixedly connected to the connecting plates. An oil tank is movably arranged inside the insert. One end of the oil tank is threadedly connected to and communicates with a cap. One end of the cap is fixedly connected to multiple brush tubes, one end of which extends into the cap. This novel lubrication device for a hoist, by placing the oil tank into the insert, with the cap passing through the insert, and the brush tubes contacting the chains on the hoist body, allows the lubricating oil in the oil tank to be brushed onto the chains on the hoist body through the brush tubes, thus oiling the chains and avoiding the cumbersome oiling process of existing hoists."

[0004] In the process of developing this application, the inventors discovered the following problems with the existing technology: Most existing hoists work by placing an oil tank into a barrel, passing a cap through the barrel, and having a brush tube contact the chain on the hoist body. This allows the lubricating oil in the oil tank to be brushed onto the chain on the hoist body through the brush tube, thus lubricating the chain. However, the lubrication process requires frequent manual operation to place the oil tank into the barrel and ensure good contact between the brush tube and the chain. This operation is cumbersome and inefficient. Furthermore, there is no effective grease return and filtration system, and excess grease is prone to dripping, which easily leads to resource waste.

[0005] Therefore, those skilled in the art have provided a conveniently lubricated hoist to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a convenient lubrication hoist. The lubrication mechanism realizes the automatic addition of lubricating oil to the sprocket, chain and shaft, which is easy to operate. In addition, the amount of lubricating oil discharged can be controlled by the electric telescopic rod, and the overall cost can be saved.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A convenient lubrication hoist includes a hoist body, a lubrication mechanism inside the hoist body, the lubrication mechanism including an electric telescopic rod, a connecting rod fixedly installed at the output end of the electric telescopic rod, two fixed blocks fixedly installed outside the connecting rod, a rotating block rotatably installed at the lower end of each of the two fixed blocks, a first piston rotatably installed at the lower end of each of the two rotating blocks, two second fixed cylinders fixedly installed at the upper end inside the hoist body, and an oil storage tank fixedly installed at the upper end of the hoist body.

[0009] A second piston is fixedly installed on the side of the connecting rod away from the electric telescopic rod. A first fixed cylinder is fixedly installed on the upper part of the elevator body away from the electric telescopic rod. A first one-way valve is fixedly installed at the front end of the first fixed cylinder. A first conveying pipe is fixedly installed at the output end of the first one-way valve. A filter screen is fixedly installed at the lower part of the elevator body.

[0010] Furthermore, the two first pistons are respectively slidably disposed inside the two second fixed cylinders, and a first check valve is fixedly disposed at the front end of each of the two second fixed cylinders.

[0011] Furthermore, the oil tank output end is fixedly provided with two connecting pipes, the output ends of the two connecting pipes are fixedly provided at the input ends of two No. 1 check valves, and the lower ends of the two second fixed cylinders are fixedly provided with No. 2 check valves.

[0012] Furthermore, the second piston is externally slidably disposed inside the first fixed cylinder, and the first conveying pipe is externally fixedly disposed inside the hoist body on the side away from the electric telescopic rod.

[0013] Furthermore, a motor is fixedly installed on one side inside the main body of the hoist, and a rotating shaft is fixedly installed at the output end of the motor.

[0014] Furthermore, the side of the rotating shaft away from the motor is rotatably disposed inside the main body of the elevator away from the motor, and the output end of the first conveying pipe is disposed at the upper end of the rotating shaft.

[0015] Furthermore, a second conveying pipe is fixedly installed at the lower end of the first fixed cylinder, a second one-way valve is fixedly installed at the lower end of the second conveying pipe, a control panel is fixedly installed on one side of the elevator body, and the inside side of the filter screen is located at the lower end of the outside of the second conveying pipe.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model proposes a convenient lubrication hoist. When lubricating the internal components of the hoist body, the electric telescopic rod is first activated, causing its output end to retract. This causes the rotating block to rotate and pull the first piston, which slides upward inside the second fixed cylinder. At this time, the lubricating oil in the oil tank enters the second fixed cylinder through the connecting pipe. When the electric telescopic rod retracts to the set position, the connecting rod resets, and the rotating block pushes the first piston downward, causing the lubricating oil in the second fixed cylinder to be discharged through the second one-way valve and finally drip onto the chain and sprocket. The entire lubrication process is driven entirely by the electric telescopic rod. With the help of the control panel, timed and quantitative lubrication is achieved, reducing the frequency of manual maintenance and improving the operating efficiency of the equipment.

[0018] 2. This utility model proposes a convenient lubrication hoist. While the output end of the electric telescopic rod moves, the movement of the connecting rod drives the second piston to slide synchronously within the first fixed cylinder. This causes the second conveying pipe to draw filtered lubricating oil from the bottom of the hoist body. The lubricating oil enters the first fixed cylinder through the second conveying pipe and the second one-way valve. When the second piston slides in the opposite direction, the lubricating oil in the first fixed cylinder flows into the first conveying pipe through the first one-way valve and is delivered to the connection between the rotating shaft and the hoist body, achieving effective lubrication of the rotating shaft. The dripping lubricating oil is filtered and recovered, realizing the recycling of lubricating oil and reducing energy consumption and operating costs. Attached Figure Description

[0019] Figure 1 This is an isometric schematic diagram of the entire utility model;

[0020] Figure 2 This is a schematic diagram of the orthographic section of this utility model;

[0021] Figure 3 This is a partial orthographic isometric view of the present invention near the second check valve;

[0022] Figure 4 This is an isometric view of a partial explosion near the second piston of this utility model;

[0023] Figure 5 This is a partial isometric view of the present invention from below, close to the motor;

[0024] Figure 6 This is an isometric view of a partial explosion near the second fixed cylinder of this utility model.

[0025] Legend:

[0026] 1. Hoist body; 2. Lubrication mechanism; 3. Control panel; 4. Oil tank; 201. First check valve; 202. First fixed cylinder; 203. First conveying pipe; 204. Second conveying pipe; 205. Rotating shaft; 206. Connecting pipe; 207. First piston; 208. Rotating block; 209. Second fixed cylinder; 210. Electric telescopic rod; 211. Motor; 212. Filter screen; 213. Connecting rod; 214. Check valve No. 1; 215. Check valve No. 2; 216. Fixed block; 217. Second piston; 218. Second check valve. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-6 One embodiment provided by this utility model:

[0029] A convenient lubrication hoist includes a hoist body 1, a lubrication mechanism 2 inside the hoist body 1, the lubrication mechanism 2 includes an electric telescopic rod 210, a connecting rod 213 fixedly installed at the output end of the electric telescopic rod 210, two fixed blocks 216 fixedly installed outside the connecting rod 213, a rotating block 208 rotatably installed at the lower end of each of the two fixed blocks 216, a first piston 207 rotatably installed at the lower end of each of the two rotating blocks 208, two second fixed cylinders 209 fixedly installed at the upper end inside the hoist body 1, and an oil storage tank 4 fixedly installed at the upper end of the hoist body 1.

[0030] Two first pistons 207 are slidably disposed inside two second fixed cylinders 209 respectively. A first check valve 214 is fixedly disposed at the front end of each of the two second fixed cylinders 209. Two connecting pipes 206 are fixedly disposed at the output end of the oil tank 4. The output ends of the two connecting pipes 206 are fixedly disposed at the input ends of the two first check valves 214. A second check valve 215 is fixedly disposed at the lower end of each of the two second fixed cylinders 209.

[0031] A second piston 217 is fixedly installed on the side of the connecting rod 213 away from the electric telescopic rod 210. A first fixed cylinder 202 is fixedly installed on the upper side of the elevator body 1 away from the electric telescopic rod 210. A first one-way valve 201 is fixedly installed at the front end of the first fixed cylinder 202. A first conveying pipe 203 is fixedly installed at the output end of the first one-way valve 201. A filter screen 212 is fixedly installed at the lower end of the elevator body 1.

[0032] The second piston 217 is externally slidably disposed inside the first fixed cylinder 202. The first conveying pipe 203 is externally fixedly disposed inside the hoist body 1 on the side away from the electric telescopic rod 210. A motor 211 is fixedly disposed on one side inside the hoist body 1. A rotating shaft 205 is fixedly disposed at the output end of the motor 211. The side of the rotating shaft 205 away from the motor 211 is rotatably disposed inside the hoist body 1 on the side away from the motor 211. The output end of the first conveying pipe 203 is disposed at the upper end of the rotating shaft 205. A second conveying pipe 204 is fixedly disposed at the lower end of the first fixed cylinder 202. A second one-way valve 218 is fixedly disposed at the lower end of the second conveying pipe 204. A control panel 3 is fixedly disposed on one side of the hoist body 1. The filter screen 212 is disposed inside the lower end of the second conveying pipe 204.

[0033] Specifically, the working principle of the hoist body 1 is existing technology known to those skilled in the art. When lubrication is required for the rotating shaft 205, chain, and sprocket inside the hoist body 1, the operator activates the electric telescopic rod 210 fixedly installed on one side inside the hoist body 1 via the control panel 3. The output end of the electric telescopic rod 210 retracts, causing the connecting rod 213 to slide towards the side closer to the electric telescopic rod 210. The movement of the connecting rod 213 will synchronously drive the two fixed blocks 216 outside it to move linearly at the upper end inside the hoist body 1. The sliding of the fixed block 216 causes the rotating block 208 connected to it to rotate. The rotation of the rotating block 208 will pull the first piston 207, causing it to slide upward in the second fixed cylinder 209. The first piston 207 is composed of a push rod and a rubber sealing plug. When the first piston 207 slides upward, a negative pressure will be formed inside the second fixed cylinder 209. At this time, the lubricating oil in the oil tank 4 enters the second fixed cylinder 209 through the connecting pipe 206 and the first one-way valve 214 under the action of the pressure difference. The second one-way valve 215 can prevent air backflow.

[0034] When the electric telescopic rod 210 retracts to the set position, it begins to extend, pushing the connecting rod 213 to reset. Since the fixed block 216 and the rotating block 208 are rotatably connected, the reset of the connecting rod 213 will push the first piston 207 to slide downward in the second fixed cylinder 209 through the rotating block 208, squeezing out the lubricating oil through the second one-way valve 215. At this time, the first one-way valve 214 can prevent the lubricating oil from flowing back, so that the lubricating oil drips evenly from the second one-way valve 215 onto the sprocket and chain, realizing the lubrication of the transmission components. The excess lubricating oil on the chain and sprocket drips to the bottom of the hoist body 1, and after being filtered by the filter screen 212, it re-enters the circulation.

[0035] When the electric telescopic rod 210 retracts, the connecting rod 213 will also drive the second piston 217 to slide synchronously inside the first fixed cylinder 202. When the second piston 217 slides, a suction force will be generated inside the first fixed cylinder 202. Through the second conveying pipe 204 and the second one-way valve 218, the lubricating oil temporarily stored at the bottom of the hoist body 1 after being filtered by the filter screen 212 will be drawn in. When the second piston 217 slides away from the electric telescopic rod 210, it will push the lubricating oil inside the first fixed cylinder 202 from the first one-way valve 201 through the first conveying pipe 203 to the connection between the rotating shaft 205 and the hoist body 1, thus completing the lubrication of the rotating shaft 205.

[0036] The electric telescopic rod 210 drives two sets of piston assemblies to simultaneously lubricate the rotating shaft 205 and the chain sprocket, improving lubrication efficiency. The stroke of the electric telescopic rod 210 can be precisely adjusted through the control panel 3, and the lubricating oil supply can be automatically adjusted according to the hoist load and working environment, avoiding the problems of over- or under-lubrication in traditional lubrication methods. Controlling the electric telescopic rod 210 through the control panel 3 is a mature and publicly available technology. Therefore, its specific structure and working principle will not be described in detail in this article.

[0037] Filter screen 212 can filter lubricating oil in real time, removing metal debris and impurities. Filter screen 212 is fixed to the lower end of the elevator body 1 by bolts. Disassembly only requires unscrewing the inspection port bolts to remove it for cleaning or replacement, facilitating subsequent maintenance and reducing costs. Furthermore, both the first piston 207 and the second piston 217 use nitrile rubber sealing plugs, with a clearance ≤0.05mm between the piston and the inner wall of the second fixed cylinder 209 and the first fixed cylinder 202. This, combined with check valves, achieves zero-leakage lubrication. Check valve 214 allows lubricating oil to flow from the connecting pipe 206 into the second fixed cylinder (209), preventing backflow. Check valve 215 only allows lubricating oil to flow from the second fixed cylinder (209). The lubricating oil in the fixed cylinder 209 drips downwards onto the chain and sprocket. The second one-way valve 218 ensures that the lubricating oil can only be drawn into the first fixed cylinder 202 from the bottom of the hoist body 1 through the second conveying pipe 204, avoiding backflow. The first one-way valve 201 only allows the lubricating oil in the first fixed cylinder 202 to enter the first conveying pipe 203. The above-mentioned one-way valve is a mature and publicly available technology in the prior art. Therefore, its specific structure and working principle will not be described in detail in this article. The one-way valve can ensure the directional flow of lubricating oil, prevent leakage and pollution of the working environment, and the components of the lubrication mechanism 2 adopt a standardized interface design, which facilitates quick disassembly and replacement and shortens maintenance time.

[0038] Working principle: When lubrication is required for the rotating shaft 205 inside the hoist body 1 and the chain and sprocket outside the rotating shaft 205, the electric telescopic rod 210 is activated, causing its output end to retract. This drives the connecting rod 213 to slide inside the hoist body 1, causing the two fixed blocks 216 outside to slide synchronously. The sliding of the fixed blocks 216 will drive the rotating block 208 to rotate, thereby causing the first piston 207 to slide synchronously upward inside the second fixed cylinder 209. When the first piston 207 slides upward inside the second fixed cylinder 209, it will create a negative pressure inside the second fixed cylinder 209. Under the action of the pressure difference, the lubricating oil inside the oil tank 4 enters the second fixed cylinder 209 through the connecting pipe 206 and the first check valve 214. Inside the second fixed cylinder 209, the second one-way valve 215 at the lower end of the second fixed cylinder 209 prevents air from entering the second fixed cylinder 209. When the output end of the electric telescopic rod 210 retracts to the set position, its output end extends. At this time, the connecting rod 213 drives the fixed block 216 to reset, so that the rotating block 208 pushes the first piston 207, causing it to move downward inside the second fixed cylinder 209. When the first piston 207 slides downward, the lubricating oil in the second fixed cylinder 209 is squeezed out through the second one-way valve 215. The squeezed-out lubricating oil will drip onto the sprocket and chain, so that the two are lubricated. The excess lubricating oil on the chain and sprocket will drip down and be filtered by the filter screen 212 and temporarily stored in the lower end of the elevator body 1.

[0039] When the electric telescopic rod 210 retracts and drives the connecting rod 213 to move synchronously, the connecting rod 213 will also drive the second piston 217 to move synchronously, causing the second piston 217 to slide inside the first fixed cylinder 202, generating suction inside, so that the second conveying pipe 204 draws out the lubricating oil that has been filtered and temporarily stored inside the lower end of the hoist body 1. At this time, the lubricating oil will enter the first fixed cylinder 202 from the second conveying pipe 204 through the second one-way valve 218. When the second piston 217 moves away from the electric telescopic rod 210 and slides inside the first fixed cylinder 202, the second piston 217 will push the lubricating oil inside the first fixed cylinder 202 to move, so that it enters the first conveying pipe 203 from the first one-way valve 201, and then enters the connection between the rotating shaft 205 and the hoist body 1 from the first conveying pipe 203, thereby lubricating the rotating shaft 205.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A conveniently lubricated hoist, comprising a hoist body (1), characterized in that: The hoist body (1) is provided with a lubrication mechanism (2), which includes an electric telescopic rod (210). A connecting rod (213) is fixedly provided at the output end of the electric telescopic rod (210). Two fixed blocks (216) are fixedly provided on the outside of the connecting rod (213). A rotating block (208) is rotatably provided at the lower end of each of the two fixed blocks (216). A first piston (207) is rotatably provided at the lower end of each of the two rotating blocks (208). Two second fixed cylinders (209) are fixedly provided at the upper end of the hoist body (1). An oil storage tank (4) is fixedly provided at the upper end of the hoist body (1). A second piston (217) is fixedly installed on the side of the connecting rod (213) away from the electric telescopic rod (210). A first fixed cylinder (202) is fixedly installed on the upper side of the elevator body (1) away from the electric telescopic rod (210). A first one-way valve (201) is fixedly installed at the front end of the first fixed cylinder (202). A first conveying pipe (203) is fixedly installed at the output end of the first one-way valve (201). A filter screen (212) is fixedly installed at the lower end of the elevator body (1).

2. The convenient lubrication hoist according to claim 1, characterized in that: The two first pistons (207) are slidably disposed inside the two second fixed cylinders (209), and a first check valve (214) is fixedly disposed at the front end of each of the two second fixed cylinders (209).

3. The convenient lubrication hoist according to claim 2, characterized in that: The oil storage tank (4) has two fixed connecting pipes (206) at its output end. The output ends of the two connecting pipes (206) are fixedly located at the input ends of two first check valves (214). The lower ends of the two second fixed cylinders (209) are each fixedly located with a second check valve (215).

4. The convenient lubrication hoist according to claim 1, characterized in that: The second piston (217) is externally slidably disposed inside the first fixed cylinder (202), and the first conveying pipe (203) is externally fixedly disposed inside the hoist body (1) on the side away from the electric telescopic rod (210).

5. The convenient lubrication hoist according to claim 1, characterized in that: A motor (211) is fixedly installed on one side inside the main body (1) of the hoist, and a rotating shaft (205) is fixedly installed at the output end of the motor (211).

6. The convenient lubrication hoist according to claim 5, characterized in that: The rotating shaft (205) is rotatably disposed on the side away from the motor (211) inside the hoist body (1), and the output end of the first conveying pipe (203) is disposed on the upper end of the rotating shaft (205).

7. The convenient lubrication hoist according to claim 1, characterized in that: The lower end of the first fixed cylinder (202) is fixedly provided with a second conveying pipe (204), the lower end of the second conveying pipe (204) is fixedly provided with a second one-way valve (218), the main body (1) of the elevator is fixedly provided with a control panel (3) on one side, and the inside side of the filter screen (212) is provided at the lower end of the outside of the second conveying pipe (204).

Images