An automatic elevator with automatic oil supplementing and oil sludge cleaning

Abstract

The application discloses an automatic elevator with automatic oil supplement and oil sludge cleaning, and relates to the technical field of automatic elevators.The automatic elevator comprises a bearing frame, a transfer platform, guide rails, guide shoes, a lifting device, a counterweight and a control device.The guide shoe comprises a support frame and a shoe lining.The support frame is fixedly connected to the transfer platform, and an oil supplement mechanism is fixedly installed on the support frame.The oil supplement mechanism comprises an oil cup, a fixedly installed on the top end of the support frame, and a bottom end fixedly installed with a pressing valve;an installation cylinder fixedly installed on the side wall of the support frame;an air cylinder fixedly installed on the bottom end of the inner wall of the installation cylinder, and electrically connected with the control device.The application can realize automatic supplement of guide rail lubricating oil and automatic cleaning of oil sludge, significantly reduce the wear of the guide rail, prolong the service life of the equipment, and monitor the levelness of the transfer platform, improve the operation safety and stability, and be suitable for intelligent storage and industrial logistics scenes.

Description

Technical Field

[0001] This application relates to the field of automatic lifting platform technology, and more particularly to an automatic lifting platform with automatic oil replenishment and sludge removal. Background Technology

[0002] Automated cargo conveyor lifts are a very common type of industrial logistics equipment. They are an indispensable "vertical shuttle bus" in automated logistics systems, connecting isolated floors into a continuous and dynamic logistics network. They are a key infrastructure for realizing "lights-out factories" and smart warehousing.

[0003] Automatic freight conveyor lifts generally include a load-bearing frame, a transfer platform, a lifting device, guide rails, guide shoes, a conveyor, and a control device. By fixing the guide rails to the load-bearing frame, the transfer platform, which drives the conveyor, is equipped with several guide shoes. The guide shoes are slidably connected to the guide rails, and under the action of the lifting device, the transfer platform can rise or fall stably.

[0004] During prolonged use, the lubricating oil on the guide rails of automated freight elevators is continuously consumed, oxidized, and deteriorates. Combined with friction between the guide shoes and the guide rails, this causes the lubricating oil film to thin or even fail, resulting in direct contact between the metal surfaces of the guide rails and guide shoes, leading to guide rail scoring and accelerated wear. Simultaneously, the lubricating oil on the guide rail surface attracts dust and wear debris, gradually forming sludge, further deteriorating lubrication and accelerating guide rail wear. Currently, conventional elevators lack automatic lubrication replenishment and sludge removal functions, resulting in frequent maintenance, high costs, and difficulty in maintaining a consistently stable lubrication and cleanliness. Summary of the Invention

[0005] This application proposes an automatic lifting platform with automatic oil replenishment and sludge removal, which has the advantages of automatically replenishing the lubricating oil on the slide rails and automatically cleaning the sludge on the slide rails, thereby solving the problems of lubricating oil consumption and sludge formation on the slide rails leading to accelerated wear.

[0006] To achieve the above objectives, this application adopts the following technical solution: an automatic lifting platform with automatic oil replenishment and sludge removal, comprising a load-bearing frame, a transfer platform, a guide rail, a guide shoe, a lifting device, a counterweight, and a control device. The guide shoe includes a support frame and a shoe liner. The support frame is fixedly connected to the transfer platform, and an oil replenishment mechanism is fixedly installed on the support frame. The oil replenishment mechanism includes: an oil cup, fixedly installed at the top of the support frame, and a pressing valve fixedly installed at the bottom; an installation cylinder, fixedly installed on the side wall of the support frame; a cylinder, fixedly installed at the bottom of the inner wall of the installation cylinder, and electrically connected to the control device; an oil receiving block, fixedly connected to the output shaft end of the cylinder, and slidably sealed to the inner wall of the installation cylinder, with an annular oil groove at the top and a through hole at the bottom of the side wall of the oil groove; and an oil supply pipe, fixedly installed at the top of the shoe liner, wherein, in the initial state, one end of the oil supply pipe is connected to the through hole at the bottom of the oil groove.

[0007] Furthermore, the oil pipeline is connected to several capillaries, and the ends of the capillaries are equidistantly distributed at the top of the contact position between the shoe liner and the guide rail.

[0008] Furthermore, a control button is fixedly installed on the top of the oil cup, and the control button, cylinder and control device are electrically connected. A stop block is fixedly installed near the upper position of the guide rail.

[0009] Furthermore, an observation window is embedded in the side wall of the oil cup, and a scale line is provided on the oil cup on one side of the observation window.

[0010] Furthermore, the support frame is equipped with a cleaning mechanism, which includes: two sliding cylinders, which are respectively fixedly installed on the support frame on both sides of the boot liner, and have spiral grooves on their inner walls. The sliding cylinders are connected to the interior of the mounting cylinder close to the upper end of the cylinder through a connecting pipe; a slider, which is slidably and sealedly installed inside the sliding cylinder, and a spiral block is fixedly installed on the side wall inside the sliding cylinder. The spiral block is in slidably and sealedly contacting the spiral groove on the inner wall of the sliding cylinder; a support spring, one end of which is fixedly connected to the slider and the other end of which is fixedly connected to the side wall of the sliding cylinder; and a cleaning scraper, which is fixedly sleeved on the end of the slider that extends out of the sliding cylinder.

[0011] Furthermore, a dust collection cylinder is fixedly installed on the side wall at the bottom end of the guide rail. The dust collection cylinder is fixedly sleeved on the guide rail and is a funnel shape with the opening facing upwards.

[0012] Furthermore, the two connecting pipes on the same support frame are connected to the slide cylinder through a U-shaped pipe. The axis of the U-shaped pipe is horizontal. The slide cylinder is filled with conductive liquid. Conductive blocks are embedded in the inner walls of the slide cylinder at both ends of the U-shaped pipe. An alarm is fixedly installed on the side wall of the control device. The alarm, the conductive blocks, and the control device are electrically connected.

[0013] Furthermore, the upper surface of the cylinder is a surface that is high in the middle and low at the edges, and has a gently dome shape.

[0014] This application has the following beneficial effects: 1. This application controls the cylinder through a control device, so that the cylinder pushes the oil receiving block at regular intervals, thereby replenishing the oil groove of the oil cup to the oil receiving block with lubricating oil at regular intervals. After the oil receiving block is reset, the lubricating oil in the oil groove is slowly replenished to the space between the guide shoe liner and the guide rail through the oil delivery pipe, thereby replenishing the lubricating oil on the surface of the guide rail and preventing the reduction of lubricating oil on the surface of the guide rail from causing accelerated surface wear.

[0015] 2. When the oil receiving block is pushed upward by the cylinder, a negative pressure is formed between the cylinder and the oil receiving block. Some of the gas in the slide cylinder enters the mounting cylinder through the connecting pipe, and a negative pressure is also formed in the slide cylinder. The negative pressure in the slide cylinder generates a pulling force on the slider, causing the slider to rotate and move into the slide cylinder. The rotating slider drives the cleaning scraper to rotate, so that the end of the cleaning scraper contacts the surface of the guide rail. When the guide shoe moves with the transfer platform, the cleaning scraper on the guide shoe scrapes off the oil sludge on the surface of the guide rail, preventing the oil sludge on the surface of the guide rail from accelerating the wear of the guide rail.

[0016] 3. In this application, the slider moves into the slide cylinder, and when the cleaning scraper end on the slider contacts the side wall of the guide rail, the slider pushes the conductive liquid in the slide cylinder. Part of the conductive liquid enters the U-shaped tube, and the liquid level rises, causing the conductive liquid to contact the conductive blocks on the inner wall of the slide cylinder. When the level of the transfer platform is within the specified range, the conductive blocks in the slide cylinders at both ends of the U-shaped tube are energized, and the alarm on the control device is not triggered. When the tilt of the transfer platform is not within the specified range, the conductive blocks in the slide cylinders at both ends of the U-shaped tube are not energized, thereby triggering the alarm on the control device to remind the staff to check and maintain the level of the transfer platform. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0018] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the installation of the support platform and guide shoe of the present invention; Figure 3 This is a schematic diagram of the guide shoe structure of the present invention; Figure 4 For the present invention Figure 3 Rear view; Figure 5 This is a longitudinal sectional view of the guide shoe of the present invention from the middle position; Figure 6 This is a longitudinal sectional view of the guide shoe of the present invention from the axis of the slide cylinder; Figure 7 For the present invention Figure 6 Enlarged view of the local structure at point A in the middle.

[0019] In the diagram: 1. Load-bearing frame; 21. Transfer platform; 22. Rotary table; 23. Conveyor; 3. Guide rail; 31. Impact block; 4. Guide shoe; 41. Support frame; 42. Shoe liner; 431. Oil cup; 432. Press valve; 433. Mounting cylinder; 434. Cylinder; 435. Oil receiving block; 436. Oil tank; 437. Oil delivery pipe; 438. Observation window; 439. Scale line; 441. Slide cylinder; 442. Slider; 443. Connecting pipe; 444. Cleaning scraper; 445. Support spring; 45. U-shaped tube; 46. Conductive block; 47. Control button; 51. Traction machine; 52. Guide shaft; 53. Flywheel; 54. Chain; 6. Counterweight; 7. Ash collection cylinder; 8. Control device; 81. Alarm. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figures 1-7An automatic lifting platform with automatic oil replenishment and sludge removal includes a load-bearing frame 1, a transfer platform 21, guide rails 3, guide shoes 4, a lifting device, a counterweight 6, and a control device 8. The transfer platform 21 is located in the middle of the load-bearing frame 1. Two guide shoes 4 are bolted to the top of each side of the transfer platform 21. Two guide rails 3 are located on each side of the transfer platform 21, and their upper and lower ends are fixedly connected to the load-bearing frame 1. The guide rails 3 and guide shoes 4 are in sliding contact. A lifting device for raising and lowering the transfer platform 21 is installed at the top of the load-bearing frame 1. The lifting device includes a traction machine 51, a guide shaft 52, flywheels 53, and a chain 54. The traction machine 51 is fixedly installed at the top of the load-bearing frame 1. Rotatable guide shafts 52 are located at the top of the load-bearing frame 1 on both sides of the traction machine 51. The two ends of the guide shafts 52 are connected to the load-bearing frame 1 via support seats. Several flywheels 53 are fixedly sleeved on the guide shafts 52. The output shaft of the traction machine 51... The transfer platform 21 is connected to the flywheel 53 on one of the guide shafts 52. Rotatable guide shafts 52 are provided on both sides of the upper end of the transfer platform 21. The two ends of the guide shafts 52 are connected to the transfer platform 21 through support seats. Several flywheels 53 are fixedly sleeved on the guide shafts 52 on the transfer platform 21. A counterweight 6 with flywheels 53 is provided between the upper and lower support plates of the load-bearing frame 1 and on one side of the transfer platform 21. The flywheels 53 on the counterweight 6, the flywheels 53 on the guide shafts 52 at the top of the load-bearing frame 1 and the flywheels 53 on the guide shafts 52 at the upper end of the transfer platform 21 are connected by a chain 54. Both ends of the chain 54 are fixedly connected to the top of the load-bearing frame 1. When the traction machine 51 starts, it can drive the guide shafts 52 and the flywheels 53 to drive the chain 54 to move synchronously, so that the ends of several chains 54 can synchronously drive the transfer platform 21 to rise or fall. A control device 8 is fixedly installed on the load-bearing frame 1. The control device 8 is used to control the automatic lift.

[0022] A rotatable turntable 22 is installed at the middle position of the top of the transfer platform 21. A conveyor 23 is fixedly installed at the top of the turntable 22. The turntable 22 is used to drive the conveyor 23 and the conveyed items on the conveyor 23 to rotate, and the conveyor 23 is used to transport the conveyed items.

[0023] The guide shoe 4 includes a support frame 41 and a shoe liner 42. The support frame 41 is fixedly connected to the transfer platform 21 by bolts. The shoe liner 42 is fixedly connected to the side wall of the support frame 41 away from the transfer platform 21, and the shoe liner 42 slides in contact with the guide rail 3. An oil replenishment mechanism for automatically replenishing oil to the shoe liner 42 and the guide rail 3 is fixedly installed on the support frame 41. The oil replenishment mechanism includes an oil cup 431, an installation cylinder 433, a cylinder 434, an oil receiving block 435, and an oil delivery pipe 437. The oil cup 431 is fixedly installed at the top of the support frame 41, and a press valve 432 is fixedly installed at the bottom of the oil cup 431. The press valve 432 is normally closed and opens when pressed and automatically closes when released from pressing. An installation cylinder 433 is fixedly installed on the side wall of the support frame 41 away from the shoe liner 42, and a... Cylinder 434 is installed with its side wall sealed to the inner wall of mounting cylinder 433. The output shaft of cylinder 434 faces upward. Cylinder 434 is electrically connected to control device 8. An oil receiving block 435 is fixedly connected to the end of the output shaft of cylinder 434. The oil receiving block 435 is slidably sealed to the inner wall of mounting cylinder 433. An annular oil groove 436 is opened at the top of the oil receiving block 435. The axis of the oil groove 436 is on the same straight line as the axis of the press valve 432. A through hole is opened at the bottom of the side wall of the oil groove 436. An oil supply pipe 437 is fixedly installed at the top of shoe liner 42. In the initial state, one end of the oil supply pipe 437 is connected to the through hole at the bottom of the oil groove 436. Several capillaries are connected to the oil supply pipe 437. The ends of the capillaries are equidistantly distributed at the top of the contact position between shoe liner 42 and guide rail 3. The speed at which the lubricant flows from the capillaries is relatively slow.

[0024] When using an automatic lift to transport items, the items are transferred to the top of the conveyor 23, and the traction machine 51 is started. The output shaft of the traction machine 51 drives the guide shaft 52, which is connected to the output shaft, to rotate. The rotating guide shaft 52 drives the flywheel 53 on it to rotate synchronously, so that the flywheel 53 drives the chain 54 on the flywheel 53. Under the action of the counterweight 6 and the gravity of the transfer platform 21, the chain 54 is always kept in a taut state. Through the rotation of the guide shaft 52 and the flywheel 53, multiple chains 54 are synchronously driven, thereby raising or lowering the transfer platform 21. During prolonged use, the control device 8 controls the start of cylinder 434. After a certain period of time, the control device 8 starts cylinder 434, and the output end of cylinder 434 pushes the oil receiving block 435 upward. When the oil receiving block 435 moves upward, the through hole at the bottom of the side wall of oil groove 436 is blocked by the side wall of mounting cylinder 433. When the top of oil receiving block 435 hits the bottom of oil cup 431, the protrusion in the middle of oil groove 436 hits the pressing valve 432, pressing the pressing valve 432 and opening it. Cylinder 434 pushes oil receiving block 435 to the highest position for a certain period of time, and the lubricant in oil cup 431... Under the influence of gravity, the lubricating fluid enters the oil groove 436 of the oil receiving block 435 through the press valve 432. When the lubricating fluid in the oil groove 436 is full, the flow stops. At this time, the cylinder 434 drives the oil receiving block 435 back to its original position. The through hole at the bottom of the side wall of the oil groove 436 on the oil receiving block 435 is connected to the oil supply pipe 437. The lubricating fluid in the oil groove 436 is slowly replenished to the space between the shoe liner 42 and the guide rail 3 through the oil supply pipe 437 and the capillary tube on the oil supply pipe 437. When the guide shoe 4 moves up and down, the lubricating oil replenished to the surface of the guide rail 3 is evenly coated to prevent the lubricating oil on the surface of the guide rail 3 from decreasing and causing the surface wear of the guide rail 3 to accelerate.

[0025] Furthermore, in this embodiment, a control button 47 for controlling the cylinder 434 on the same guide shoe 4 can be fixedly installed on the top of the oil cup 431. The control button 47, the cylinder 434, and the control device 8 are electrically connected. A stop block 31 is fixedly installed at the upper position of the guide rail 3, and the stop block 31 is directly above the guide shoe 4. At certain intervals, the transfer platform 21 is in the initial state at the bottom. When the device is started, the cylinder 434 is started by the control device 8, so that the output end of the cylinder 434 pushes the oil receiving block 435 upward to the top. The protrusion in the middle of the oil groove 436 opens the press valve 432. At this time, the cylinder 434 stops working, and the lubricating fluid in the oil cup 431 enters the oil groove 436 of the oil receiving block 435 through the press valve 432 under the action of gravity. When the guide shoe 4 moves with the transfer platform 21 to the top of the guide rail 3, When the oil cup 431 is at the top, the control button 47 at the top of the oil cup 431 is squeezed by the impact block 31 on the guide rail 3, causing the impact block 31 to press the control button 47. At this time, the pressed control button 47 transmits a contraction signal to the cylinder 434 through the control device 8. Only then can the output end of the cylinder 434 drive the oil receiving block 435 back to its original position. The through hole at the bottom of the side wall of the oil groove 436 on the oil receiving block 435 is connected to the oil supply pipe 437. The lubricating oil in the oil groove 436 is slowly replenished to the space between the shoe liner 42 and the guide rail 3 through the oil supply pipe 437 and the capillary tube on the oil supply pipe 437. The transfer platform 21 slides to the top before the cylinder 434 is activated to drive the oil receiving block 435 to reset, so that the lubricating oil in the oil groove 436 on the oil receiving block 435 can be replenished at the top of the contact between the guide rail 3 and the shoe liner 42, which facilitates the lubricating oil filling the entire guide rail 3.

[0026] It should be noted that an observation window 438 is embedded in the side wall of the oil cup 431, and a scale line 439 is provided on the oil cup 431 on one side of the observation window 438. The remaining amount of lubricating oil in the oil cup 431 can be observed through the observation window 438 and the scale line 439, so as to facilitate timely replenishment of lubricating oil in the oil cup 431.

[0027] Additionally, the support frames 41 on both sides of the boot liner 42 are equipped with a cleaning mechanism for scraping sludge off the guide rail 3. The cleaning mechanism includes a sliding cylinder 441, a slider 442, a connecting pipe 443, a cleaning scraper 444, and a support spring 445. The sliding cylinder 441 is fixedly installed on the support frames 41 on both sides of the boot liner 42, and the inner wall of the sliding cylinder 441 has a spiral groove. The opening of the sliding cylinder 441 does not have a spiral groove. A slider 442 is slidably and sealingly installed inside the sliding cylinder 441, and the end of the slider 442 extends out of the sliding cylinder 441. A spiral block is fixedly installed on the side wall of the slider 442 inside the sliding cylinder 441. The spiral block on 2 slides and seals with the spiral groove on the inner wall of the slide cylinder 441. The inner wall of the slide cylinder 441 without the spiral groove at the opening position slides and seals with the slider 442. The slider 442 is fixedly connected to a support spring 445 at one end of the slide cylinder 441, and the other end of the support spring 445 is fixedly connected to the side wall of the slide cylinder 441. The slide cylinder 441 is connected to the inside of the mounting cylinder 433 that is close to the upper end of the cylinder 434 through the connecting pipe 443. The end of the slider 442 that extends out of the slide cylinder 441 is fixedly fitted with a cleaning scraper 444, and the end of the cleaning scraper 444 points to the side wall of the guide rail 3 at the lower end of the guide shoe 4.

[0028] At certain intervals, when the transfer platform 21 is in its initial bottom position, the control device 8 starts the cylinder 434. As the output end of the cylinder 434 pushes the oil receiving block 435 upward, the distance between the oil receiving block 435 and the cylinder 434 increases, creating a negative pressure between them. This negative pressure draws gas from the slide cylinder 441 into the space between the oil receiving block 435 and the cylinder 434 through the connecting pipe 443. At this time, a negative pressure is created inside the slide cylinder 441, pulling the slider 442 into the slide cylinder 441. Because the spiral block on the outside of the slider 442 slides in contact with the spiral groove on the inner wall of the slide cylinder 441, the slider 442 rotates synchronously as it slides into the slide cylinder 441. The rotating slider 442 drives the cleaning scraper 444 to rotate synchronously. The cleaning scraper 444 is positioned so that its end is in close contact with the side wall of the guide rail 3 at the lower end of the guide shoe 4. As the guide shoe 4 moves up and down with the transfer platform 21, the moving guide shoe 4 drives the cleaning scraper 444 to move synchronously. This allows the end of the cleaning scraper 444 to scrape away the sludge on the side wall of the guide rail 3, preventing the sludge on the surface of the guide rail 3 from accelerating its wear. After the sludge on the side wall of the guide rail 3 is cleaned, when the guide shoe 4 moves to the uppermost end of the guide rail 3 with the transfer platform 21, the impact block 31 will press the control button 47. This will cause the oil receiving block 435 to return to its original position through the output end of the cylinder 434. The lubricant in the oil groove 436 of the oil receiving block 435 will then be slowly replenished between the shoe liner 42 and the guide rail 3 through the oil supply pipe 437 and the capillary tube on the oil supply pipe 437. By cleaning the guide rail 3 first and then replenishing the oil, the newly replenished lubricant is prevented from being contaminated or scraped off.

[0029] A dust collection cylinder 7 is fixedly installed on the side wall at the bottom of the guide rail 3, and the dust collection cylinder 7 is fixedly sleeved on the guide rail 3. The dust collection cylinder 7 is a funnel shape with the opening facing upward. When the cleaning scraper 444 moves up and down with the guide shoe 4 while closely adhering to the side wall of the guide rail 3, the cleaning scraper 444 scrapes off the sludge on the side wall of the guide rail 3. The funnel shape of the dust collection cylinder 7 with the opening facing upward makes it easy to collect the sludge that falls off the side wall of the guide rail 3.

[0030] In addition, the two connecting pipes 443 on the same support frame 41 are connected to the slide cylinder 441 through a U-shaped pipe 45, and the axis of the U-shaped pipe 45 is horizontal. The inner walls of the slide cylinder 441, U-shaped pipe 45, connecting pipe 443 and mounting cylinder 433 are provided with an insulating layer. The slide cylinder 441 is filled with conductive liquid. In the initial state, the height of the conductive liquid in the slide cylinder 441 is lower than the connection between the U-shaped pipe 45 and the slide cylinder 441. Conductive blocks 46 are embedded in the inner walls of the slide cylinder 441 at both ends of the U-shaped pipe 45, and the position of the conductive blocks 46 is flush with the plane where the axis of the U-shaped pipe 45 is located (i.e., higher than the horizontal plane of the conductive liquid in the slide cylinder 441). An alarm 81 is fixedly installed on the side wall of the control device 8. The alarm 81, conductive blocks 46 and control device 8 are electrically connected.

[0031] When the starting cylinder 434 pushes the oil receiving block 435 upward, a negative pressure is formed between the cylinder 434 and the oil receiving block 435. This negative pressure pulls the slider 442 into the slide cylinder 441. During this process, the slider 442 squeezes the conductive liquid inside the slide cylinder 441, causing some of the conductive liquid to enter the U-shaped tube 45. At this time, the liquid levels in the slide cylinder 441 and the U-shaped tube 45 rise synchronously. When the end of the cleaning scraper 444 on the slider 442 contacts the side wall of the guide rail 3, the slider 442 slides to the innermost end of the slide cylinder 441, and the squeezing of the conductive liquid in the slide cylinder 441 by the slider 442 reaches its maximum. If the transfer platform 21 is horizontal, and the four guide shoes 4 on the transfer platform 21 are at the same height, and the U-shaped tube 45 is horizontal, then the conductive liquid in the U-shaped tube 45 connects with the conductive liquid in the two slide cylinders 441 at both ends of the U-shaped tube 45. When the conductive liquid in the sliding cylinder 441 enters the U-shaped tube 45 and is evenly distributed within it, the liquid level inside the U-shaped tube 45 is higher than the position of the conductive block 46, but the U-shaped tube 45 is not completely filled, the conductive block 46 and the conductive liquid in the U-shaped tube 45 short-circuit the alarm 81, and the alarm 81 is not triggered. If the tilt angle of the transfer platform 21 is greater than the predetermined angle, the U-shaped tube 45 is also tilted, and the conductive liquid in the U-shaped tube 45 cannot connect the conductive blocks 46 in the two sliding cylinders 441 at both ends of the U-shaped tube 45 (that is, after the conductive liquid in the sliding cylinder 441 enters the U-shaped tube 45, the conductive liquid is not evenly distributed, and part of the U-shaped tube 45 is filled with conductive liquid while part of the U-shaped tube 45 is empty), the alarm 81 is triggered, reminding the staff to check and maintain the level of the transfer platform 21.

[0032] It should be further explained that the upper surface of cylinder 434 is a flat dome-shaped surface that is high in the middle and low at the edges. When the tilt of the transfer platform 21 is too large, after the slider 442 in the slide cylinder 441 squeezes the conductive liquid in the slide cylinder 441, some of the conductive liquid is drawn into the upper end of cylinder 434 by the negative pressure between the oil receiving block 435 and cylinder 434. During the reset, the conductive liquid at the upper end of cylinder 434 can also slide from the top of cylinder 434 into slide cylinder 441.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An automatic lifting platform with automatic oil replenishment and sludge removal, comprising a load-bearing frame (1), a transfer platform (21), a guide rail (3), a guide shoe (4), a lifting device, a counterweight (6), and a control device (8), wherein the guide shoe (4) comprises a support frame (41) and a shoe liner (42), the support frame (41) being fixedly connected to the transfer platform (21), characterized in that: An oil replenishment mechanism is fixedly installed on the support frame (41), and the oil replenishment mechanism includes: An oil cup (431) is fixedly installed on the top of the support frame (41), and a press valve (432) is fixedly installed on the bottom. The mounting cylinder (433) is fixedly installed on the side wall of the support frame (41); The cylinder (434) is fixedly installed at the bottom of the inner wall of the mounting cylinder (433), and the cylinder (434) is electrically connected to the control device (8); The oil receiving block (435) is fixedly connected to the output shaft end of the cylinder (434) and is slidably sealed to the inner wall of the mounting cylinder (433). An annular oil groove (436) is provided at the top, and a through hole is provided at the bottom of the side wall of the oil groove (436). The oil pipe (437) is fixedly installed on the top of the boot liner (42). In the initial state, one end of the oil pipe (437) is connected to the through hole at the bottom of the oil tank (436).

2. The automatic lifting platform with automatic oil replenishment and sludge removal according to claim 1, characterized in that: The oil pipeline (437) is connected to several capillaries, and the ends of the capillaries are equidistantly distributed at the top of the contact position between the boot liner (42) and the guide rail (3).

3. An automatic lifting platform with automatic oil replenishment and sludge removal according to claim 2, characterized in that: A control button (47) is fixedly installed on the top of the oil cup (431). The control button (47), the cylinder (434) and the control device (8) are electrically connected. A bumper (31) is fixedly installed on the upper part of the guide rail (3).

4. An automatic lifting platform with automatic oil replenishment and sludge removal according to claim 3, characterized in that: An observation window (438) is embedded in the side wall of the oil cup (431), and a scale line (439) is provided on the oil cup (431) on one side of the observation window (438).

5. An automatic lifting platform with automatic oil replenishment and sludge removal according to claim 4, characterized in that: The support frame (41) is provided with a cleaning mechanism, which includes: Two sliding cylinders (441) are fixedly installed on the support frame (41) on both sides of the boot liner (42), and the inner wall is provided with a spiral groove. The sliding cylinder (441) is connected to the inside of the mounting cylinder (433) close to the upper end of the cylinder (434) through the connecting pipe (443). The slider (442) is slidably sealed inside the slide cylinder (441), and a spiral block is fixedly installed on the side wall inside the slide cylinder (441). The spiral block is in slidably sealed contact with the spiral groove on the inner wall of the slide cylinder (441). The support spring (445) is fixedly connected at one end to the slider (442) and at the other end to the side wall of the slide cylinder (441); The cleaning scraper (444) is fixedly sleeved on the end of the slider (442) that extends out of the slide cylinder (441).

6. An automatic lifting platform with automatic oil replenishment and sludge removal according to claim 5, characterized in that: A dust collection cylinder (7) is fixedly installed on the side wall at the bottom end of the guide rail (3). The dust collection cylinder (7) is fixedly sleeved on the guide rail (3) and is a funnel-shaped cylinder with its opening facing upward.

7. An automatic lifting platform with automatic oil replenishment and sludge removal according to claim 6, characterized in that: The two connecting pipes (443) on the same support frame (41) are connected to the slide cylinder (441) through a U-shaped pipe (45). The axis of the U-shaped pipe (45) is horizontal. The slide cylinder (441) is filled with conductive liquid. Conductive blocks (46) are embedded in the inner wall of the slide cylinder (441) at both ends of the U-shaped pipe (45). An alarm (81) is fixedly installed on the side wall of the control device (8). The alarm (81), the conductive block (46) and the control device (8) are electrically connected.

8. An automatic lifting platform with automatic oil replenishment and sludge removal according to claim 7, characterized in that: The upper surface of the cylinder (434) is a flat dome-shaped surface that is high in the middle and low at the edges.

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