Large-load freight elevator shaft structure

Abstract

This invention discloses a heavy-duty freight elevator shaft structure, including a shaft body, guide rails, and an elevator car; it also includes a cleaning device for cleaning the guide rails. The cleaning device includes a mounting frame, guide rollers, and two cleaning rollers. The mounting frame is located on the top of the elevator car. The guide rollers contact one side surface of the guide rails and are rotatably connected to the mounting frame via a first rotating shaft. A first pulley is mounted on the first rotating shaft. The two cleaning rollers contact both sides of the guide rails and are rotatably connected to the mounting frame via second rotating shafts. One of the two second rotating shafts has a second pulley and a first gear. A transmission belt connects the second pulley and the first pulley. The other of the two second rotating shafts has a second gear that meshes with the first gear. This heavy-duty freight elevator shaft structure, by incorporating the cleaning device, enables automatic cleaning of the guide rails during elevator operation, reducing elevator maintenance costs.

Description

Technical Field

[0001] This invention relates to a heavy-duty freight elevator shaft structure. Background Technology

[0002] An elevator shaft, or simply "shaft," is a vertical passageway in a building specifically for the vertical movement of elevators. It typically has a rectangular or square cross-section. Generally, one shaft is used by one elevator; however, in special cases, two or more elevators can share a single shaft. Doorways are created on each floor for installing shaft doors. The shaft contains the elevator car and guide rails for the counterweight. The shaft pit contains the elevator car's buffer. Currently, in freight elevators using T-shaped guide rails, the elevator car moves vertically up and down using the guide rails. Guide shoes on the elevator car fit onto the guide rails, and lubricating oil is used between the guide shoes and the guide rails for lubrication. However, because the lubricating oil is applied to the outside of the guide rails, it easily deteriorates due to friction between the guide shoes and the guide rails, failing to achieve its lubricating effect. Furthermore, the lubricating oil can attract dust and other impurities, forming sludge. This sludge accumulation between the guide rails and guide shoes increases the elevator car's resistance, increases the workload of the elevator lifting mechanism, and also generates noise during operation. Traditionally, maintenance and cleaning of the guide rails inside the shaft are done manually to prevent sludge residue from causing elevator malfunctions. However, this method is inefficient and time-consuming, adding to the user's frustration by making the elevator unusable during maintenance. Summary of the Invention

[0003] The purpose of this invention is to provide a high-load freight elevator shaft structure with a reasonable structure. By setting up a cleaning device, the guide rails can be automatically cleaned during elevator operation, thereby reducing elevator maintenance costs.

[0004] To achieve the above objectives, the technical solution of the present invention is to design a heavy-duty freight elevator shaft structure, including a shaft body and an elevator car disposed inside the shaft body; guide rails are respectively provided on two opposite side walls of the shaft body, and the elevator car is connected to the guide rails through guide shoes; characterized in that it further includes a cleaning device for cleaning the guide rails.

[0005] The cleaning device includes a mounting frame, guide rollers, and two cleaning rollers. The mounting frame is located on the top of the elevator car and includes a base plate, a side plate, and a top plate. The guide rollers are in contact with one side surface of the guide rail, and a first rotating shaft is fixedly inserted through the guide rollers. The first rotating shaft passes through the side plate and is rotatably connected to the side plate. A first pulley is provided at the end of the first rotating shaft away from the guide rollers. The two cleaning rollers are located above the guide rollers and are in contact with both sides of the guide rail. A second rotating shaft is fixedly inserted through each cleaning roller and passes through the side plate, and is rotatably connected to the side plate. One of the two second rotating shafts is provided with a second pulley and a first gear. A transmission belt connects the second pulley and the first pulley. The other of the two second rotating shafts is provided with a second gear, which meshes with the first gear.

[0006] Preferably, the cleaning device further includes a cleaning fluid supply mechanism, which includes a cleaning fluid tank, a cylinder, and a pressing block. The cleaning fluid tank is located at the top of the top plate. The cylinder is vertically fixed in the top plate and has a piston inside. A piston rod is connected to the top of the piston, and the top of the piston rod penetrates the top wall of the cylinder and extends to the top of the cylinder. A spring sleeved on the piston rod is connected between the piston and the top wall of the cylinder. An inlet and an outlet are provided on the side wall of the cylinder. The inlet is located between the piston and the top plate, and the outlet is located below the top plate. An inlet pipe is connected between the bottom of the cleaning fluid tank and the inlet. A first one-way valve is provided on the inlet pipe to control the one-way communication between the cleaning fluid tank and the cylinder. The outlet is connected to... The well is equipped with a liquid outlet pipe, the end of which is away from the cylinder being connected to two branch pipes. A second one-way valve is installed on the liquid outlet pipe to control one-way communication between the cylinder and the branch pipes. The second rotating shaft is hollow, with the ends of the two shafts away from the cleaning roller respectively fitted onto the outside of the two branch pipes. The second rotating shafts are rotatably engaged with the corresponding branch pipes via bearings. The cleaning roller includes a roller and a water-absorbing cleaning layer. The roller is fitted onto the outside of the second rotating shaft, and the water-absorbing cleaning layer is fitted onto the outside of the roller. Multiple first liquid outlet holes are located inside the roller on the side wall of the second rotating shaft. Multiple second liquid outlet holes are located on the side wall of the roller. The pressing block is fixedly connected to the top of the side wall of the well body via a bracket and is used to press the piston rod.

[0007] Preferably, the cleaning fluid tank is provided with a filling port on the top.

[0008] Preferably, a support rod connects the top plate and the elevator car.

[0009] Preferably, the water-absorbing cleaning layer is a sponge layer.

[0010] The advantages and beneficial effects of this invention are as follows: It provides a high-load freight elevator shaft structure with a reasonable structure. By incorporating a cleaning device, the guide rails can be automatically cleaned during elevator operation, reducing elevator maintenance costs. Furthermore, by incorporating a cleaning fluid supply mechanism, the cleaning effect on the guide rails can be effectively improved. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention.

[0012] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0013] Figure 3 This is a schematic diagram of the guide rail and two cleaning rollers in this invention.

[0014] Figure 4 This is a schematic diagram of the cylinder, piston, and piston rod in this invention.

[0015] Figure 5 This is a schematic diagram of the cleaning roller in this invention.

[0016] Figure 6 This is a schematic diagram of the connection structure between the second rotating shaft and the branch pipe in this invention. Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0018] The specific technical solution of this invention is as follows:

[0019] like Figures 1 to 6As shown, a heavy-duty freight elevator shaft structure includes a shaft body 1 and an elevator car 2 disposed inside the shaft body 1. Guide rails 3 are respectively provided on two opposite side walls of the shaft body 1, and the elevator car 2 is connected to the guide rails 3 via guide shoes 4. It also includes a cleaning device for cleaning the guide rails 3. The cleaning device includes a mounting frame, guide rollers 5, and two cleaning rollers 6. The mounting frame is disposed on the top of the elevator car 2 and includes a base plate 7, side plates 8, and a top plate 9. The guide rollers 5 contact one side surface of the guide rails 3, and a first rotating shaft 10 is fixedly inserted through the guide rollers 5. The first rotating shaft 10 passes through the side plate 8, and the first rotating shaft 10 is rotatably connected to the side plate 8. The first rotating shaft 10 is provided with a first pulley 11 at one end away from the guide roller 5. The two cleaning rollers 6 are arranged above the guide roller 5 and are in contact with the two side surfaces of the guide rail 3 respectively. A second rotating shaft 12 is fixedly inserted through each cleaning roller 6. The second rotating shaft 12 is inserted through the side plate 8 and is rotatably connected to the side plate 8. A second pulley 13 and a first gear 14 are provided on one of the two second rotating shafts 12. A transmission belt 15 is connected between the second pulley 13 and the first pulley 11. A second gear 16 is provided on the other of the two second rotating shafts 12. The second gear 16 meshes with the first gear 14. By adopting the above scheme, since the guide roller 5 is in contact with the surface of the guide rail 3, when the elevator car 2 runs along the guide rail 3 in the shaft body 1, it will drive the guide roller 5 to rotate on the surface of the guide rail 3, so that the guide roller 3 drives the first pulley 11 to rotate through the first rotating shaft 10. The first pulley 11 then drives the second pulley 13 to rotate through the transmission belt 15. The second pulley 13 drives one of the two second rotating shafts 12. Since the gears on the two second rotating shafts 12 are meshed, the two second rotating shafts 12 will rotate simultaneously, thereby driving the two cleaning rollers 6 to rotate and clean the surface of the guide rail 3.

[0020] Furthermore, the cleaning device also includes a cleaning fluid supply mechanism, which includes a cleaning fluid tank 17, a cylinder 18, and a pressing block 19. The cleaning fluid tank 17 is located on the top of the top plate 9. The cylinder 18 is vertically fixed in the top plate 9. A piston 20 is provided inside the cylinder 18. A piston rod 21 is connected to the top of the piston 20. The top end of the piston rod 21 penetrates the top wall of the cylinder 18 and extends to the top of the cylinder 18. The piston 20 and the top wall of the cylinder 18 are connected... A spring 22 is sleeved on the piston rod 21. The cylinder 18 has an inlet 23 and an outlet 24 on its side wall. The inlet 23 is located between the piston 20 and the top plate 9, and the outlet 24 is located below the top plate 9. An inlet pipe 25 connects the bottom of the cleaning fluid tank 17 and the inlet 23. A first one-way valve 26 is provided on the inlet pipe 25. The first one-way valve 26 controls the one-way communication between the cleaning fluid tank 17 and the cylinder 18. The outlet 24... A liquid outlet pipe 27 is connected, and the end of the liquid outlet pipe 27 away from the cylinder 18 is connected to two branch pipes 28. A second one-way valve 29 is provided on the liquid outlet pipe 27. The second one-way valve 29 is used to control the one-way communication between the cylinder 18 and the branch pipes 28. The second rotating shaft 12 has a hollow structure, and the ends of the two second rotating shafts 12 away from the cleaning roller 6 are respectively fitted onto the outside of the two branch pipes 28. The second rotating shafts 12 are rotatably engaged with the corresponding branch pipes 28 through bearings 30. The cleaning roller 6 includes... The roller 61 and the water-absorbing cleaning layer 62 are fitted outside the second rotating shaft 12. The water-absorbing cleaning layer 62 is fitted outside the roller 61. The side wall of the second rotating shaft 12 is provided with a plurality of first liquid outlet holes 31, which are located inside the roller 61. The side wall of the roller 61 is provided with a plurality of second liquid outlet holes 32. The pressing block 19 is fixedly connected to the top of the side wall of the well body 1 through the bracket 33, and the pressing block 19 is used to press the piston rod 21. By adopting the above scheme, when the elevator car 2 reaches the top floor each time, the pressing block 19 will contact the piston rod 21 and press it, causing the piston rod 21 to drive the piston 20 downward and stretch the spring 22. When the piston 20 moves downward, it can push the cleaning fluid inside the cylinder 18 into the inner cavity of the second rotating shaft 12 through the outlet pipe 27, the second one-way valve 29 and the branch pipe 28. The cleaning fluid in the inner cavity of the second rotating shaft 12 will then flow out through the first outlet hole 31 and the second outlet hole 32 and penetrate into the water-absorbing cleaning layer 62. Thus, the water-absorbing cleaning layer 62 will coat the cleaning fluid on the surface of the guide rail 3 to improve the cleaning effect. When the elevator car 2 descends from the top floor, the pressing block 19 will separate from the piston rod 21. At this time, the piston 20 will move upward under the elastic restoring force of the spring 22, creating a negative pressure inside the cylinder 18, and drawing the cleaning fluid in the cleaning fluid tank 17 into the cylinder 18 for later use through the inlet pipe 25 and the first one-way valve 26.

[0021] Furthermore, the top of the cleaning fluid tank 17 is provided with a filling port 34.

[0022] Furthermore, a support rod 35 is connected between the top plate 9 and the elevator car 2.

[0023] Furthermore, the water-absorbing cleaning layer 62 is a sponge layer.

[0024] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A heavy-duty freight elevator shaft structure, comprising a shaft body and an elevator car disposed inside the shaft body; guide rails are respectively provided on two opposite side walls of the shaft body, and the elevator car is connected to the guide rails via guide shoes, characterized in that, It also includes a cleaning device for cleaning the guide rails; The cleaning device includes a mounting frame, guide rollers, and two cleaning rollers. The mounting frame is located on the top of the elevator car and includes a base plate, a side plate, and a top plate. The guide rollers are in contact with one side surface of the guide rail, and a first rotating shaft is fixedly inserted through the guide rollers. The first rotating shaft passes through the side plate and is rotatably connected to the side plate. A first pulley is provided at the end of the first rotating shaft away from the guide rollers. The two cleaning rollers are located above the guide rollers and are in contact with both sides of the guide rail. A second rotating shaft is fixedly inserted through each cleaning roller and passes through the side plate. The second rotating shaft is rotatably connected to the side plate. One of the two second rotating shafts is provided with a second pulley and a first gear. A transmission belt connects the second pulley and the first pulley. The other of the two second rotating shafts is provided with a second gear, which meshes with the first gear. The cleaning device further includes a cleaning fluid supply mechanism, which comprises a cleaning fluid tank, a cylinder, and a pressing block. The cleaning fluid tank is located at the top of the top plate. The cylinder is vertically fixed in the top plate and contains a piston. A piston rod is connected to the top of the piston, and the top of the piston rod penetrates the top wall of the cylinder and extends to the top of the cylinder. A spring fitted onto the piston rod is connected between the piston and the top wall of the cylinder. An inlet and an outlet are provided on the side wall of the cylinder. The inlet is located between the piston and the top plate, and the outlet is located below the top plate. An inlet pipe is connected between the bottom of the cleaning fluid tank and the inlet. A first one-way valve is provided on the inlet pipe to control the one-way communication between the cleaning fluid tank and the cylinder. The outlet is connected to... The outlet pipe has two branch pipes connected to its end away from the cylinder. A second one-way valve is installed on the outlet pipe to control one-way communication between the cylinder and the branch pipes. The second rotating shaft is hollow, with its ends away from the cleaning roller respectively fitted onto the outside of the two branch pipes. The second rotating shaft rotates in rotatable engagement with the corresponding branch pipe via bearings. The cleaning roller includes a roller and a water-absorbing cleaning layer. The roller is fitted onto the outside of the second rotating shaft, and the water-absorbing cleaning layer is fitted onto the outside of the roller. Multiple first outlet holes are located inside the roller on the side wall of the second rotating shaft. Multiple second outlet holes are located on the side wall of the roller. The pressing block is fixedly connected to the top of the side wall of the well body via a bracket and is used to press the piston rod.

2. The heavy-duty freight elevator shaft structure according to claim 1, characterized in that, The cleaning fluid tank is equipped with a filling port on its top.

3. The heavy-duty freight elevator shaft structure according to claim 2, characterized in that, A support rod connects the top plate and the elevator car.

4. The heavy-duty freight elevator shaft structure according to claim 3, characterized in that, The water-absorbing cleaning layer is a sponge layer.

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