Comfortable and stable large-tonnage freight elevator

Abstract

The utility model relates to a comfortable and stable large-tonnage freight elevator which comprises a hoistway, the top end of the hoistway is fixedly connected with a traction device, one end of the traction device is fixedly connected with an elevator car, the other end of the traction device is fixedly connected with a counterweight device, and the elevator car is in sliding connection with the inner wall of the hoistway through a first double-sliding-rail device. The counterweight device is in sliding connection with the inner wall of the shaft through a second double-sliding-rail device, a lubricating box is arranged in the counterweight device, nozzles are symmetrically arranged on the two sides of the lubricating box, and the elevator car and the counterweight device simultaneously adopt the double-sliding-rail device and are combined with a guide wheel, so that the pressure of a counterweight block can be effectively dispersed, the abrasion degree of a single sliding rail is reduced, and the service life of the elevator car is prolonged. And meanwhile, the guide wheel device can enable the counterweight filler to move on the sliding rail more smoothly and reduce friction, so that the abrasion speed of the sliding rail is reduced, the lubricating box and the nozzle arranged in the counterweight device can provide automatic lubrication for the sliding rail, the friction between the sliding rail and the counterweight filler is further reduced, and the abrasion of the sliding rail is delayed.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a comfortable, stable and large-tonnage elevator. Background Art

[0002] In today's era of rapid industrial development, production scale continues to expand across various sectors, and the demand for logistics and transportation is also growing. Large-tonnage freight elevators, as important vertical transportation tools in industrial production and logistics, play a vital role. However, existing large-tonnage freight elevators face numerous challenges in practical application. For example, Patent Publication No. CN218538900U discloses a large-capacity, machine-room-less freight elevator. This elevator utilizes a top-mounted permanent magnet synchronous traction motor with lateral traction sheaves. This improves hoistway space utilization, increases support strength, and reduces elevator costs. However, the counterweight is fitted with rail grooves and rods. Over long-term operation, the rails can wear. Worn rails can no longer provide stable guidance for the counterweight, potentially causing vertical deviation. This deviation can disrupt the elevator's balancing system, causing the traction motor to bear uneven loads, increasing energy consumption and shortening the motor's service life. Furthermore, reduced operating accuracy can affect the elevator's leveling accuracy, resulting in the car being at an inconsistent height with the entrance and exit when stopping at a floor, complicating cargo loading and unloading. At the same time, the fixing method of the limit rod may become loose under long-term vibration, affecting the safe operation of the counterweight device. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the limitations of existing large-tonnage freight elevators, the purpose of the present invention is to provide a comfortable and stable large-tonnage elevator. By adopting a double slide rail device and a guide wheel for both the elevator car and the counterweight device, this technology can effectively disperse the pressure of the counterweight and reduce the wear of a single slide rail. At the same time, the guide wheel device can make the movement of the counterweight on the slide rail smoother, reduce friction, and thus reduce the wear rate of the slide rail. The lubrication box and nozzle arranged inside the counterweight device can provide automatic lubrication for the slide rail, further reducing the friction between the slide rail and the counterweight, delaying the wear of the slide rail, and the combined use of the double slide rail device and the guide wheel can reduce the shaking of the counterweight during operation, indirectly reducing the impact on the limit rod, and reducing the shaking and deviation of the elevator car and the counterweight device when large tonnage is loaded, ensuring smooth operation, and improving operation accuracy and stability.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a comfortable, stable, high-tonnage elevator comprising a hoistway, a traction device fixedly connected to the top of the hoistway, an elevator car fixedly connected to one end of the traction device, and a counterweight device fixedly connected to the other end of the traction device. The elevator car is slidably connected to the inner wall of the hoistway via a first double-rail assembly, and the counterweight device is slidably connected to the inner wall of the hoistway via a second double-rail assembly. A lubrication box is provided within the counterweight device, with nozzles symmetrically arranged on both sides of the lubrication box. The counterweight device is located at the rear end of the elevator car (front and back are defined as the front of the elevator car door opening). The elevator car is constructed of high-strength steel or other strong materials to withstand the weight and impact of large tonnage cargo. Furthermore, the car's structural design has been optimized to enhance overall stability and safety. Furthermore, the elevator car is equipped with a good ventilation and lighting system. The ventilation system maintains air circulation within the car, reducing odor and stuffiness; the lighting system provides ample light to facilitate loading, unloading, and inspection of cargo. The counterweight device and its lubrication box are also made of high-strength steel or other strong materials.

[0007] Preferably, the first double-rail assembly includes a first rail and a second rail fixedly connected to the inner walls of the shaft on both sides, and the second double-rail assembly includes a third rail and a fourth rail fixedly connected to the inner walls of the shaft on both sides. The outer walls of the first rail, the second rail, the third rail, and the fourth rail are all slidably connected to guide wheel assemblies. The first rail and the second rail constitute the first double-rail assembly of the elevator car, and the third rail and the fourth rail constitute the second double-rail assembly of the counterweight device. Each rail is made of a high-strength alloy material with sufficient rigidity and wear resistance. The side of the rail can be designed to be trapezoidal or curved to increase the contact area with the guide wheel and improve the accuracy and stability of the guidance. The guide wheel is made of high-strength rubber or polyurethane material with good elasticity and wear resistance. The hub of the guide wheel is connected to the guide plate via a bearing to ensure that the guide wheel can rotate freely and reduce frictional resistance between the guide wheel and the rail. The diameter and width of the guide wheel are designed according to the size of the rail and the load capacity of the elevator to ensure that it can provide sufficient support and guidance. At the same time, the surface of the guide wheel is designed to be grooved or patterned to increase the friction with the slide rail and prevent the elevator from sliding or deflecting during operation.

[0008] Preferably, the guide wheel device includes a guide plate that is respectively fitted and connected to the first double slide rail device and the second double slide rail device, and guide wheels are fixed on the four corners of the guide plate on one side close to the first double slide rail device and the second double slide rail device, and each guide wheel is fitted and connected to the outer wall of the first double slide rail device and the second double slide rail device.

[0009] Here, the inner walls on both sides of the first slide rail, the second slide rail, the third slide rail and the fourth slide rail are provided with grooves for fitting into the outer walls of the guide wheels. The guide wheels slide up and down along the grooves, and the guide plates slide up and down fitting into the surfaces of the first slide rail, the second slide rail, the third slide rail and the fourth slide rail, thereby realizing the up and down sliding of the elevator car and the counterweight device.

[0010] A speed limiter is fixed to one side of the top of the shaft, and a first damping device is installed at the bottom of the shaft. The speed limiter monitors the elevator's speed in real time. If the speed exceeds the set value, the speed limiter immediately triggers the safety brake, slowing the elevator down and stopping it.

[0011] A pulley is fixedly connected to the middle of the top of the elevator car, an automatic detection device is fixedly connected to one side of the top of the elevator car, and a second shock-absorbing device is fixedly connected to the bottom of the elevator car.

[0012] It should be noted that the reducer, the first shock absorbing device and the second shock absorbing device here all belong to the existing technology, so their structural principles and the like will not be described in detail.

[0013] Preferably, the counterweight device includes a counterweight block, the top end of the counterweight block is fixedly connected to the bottom end of the lubrication box, and the top end of the lubrication box is fixedly connected to a counterweight wheel.

[0014] Preferably, the traction device includes a main beam fixedly connected to the top of the shaft, a traction machine is fixedly connected to the main beam, a traction wheel is fixedly connected to the bottom of the traction machine, a steel wire rope is wrapped around the outside of the traction machine, one end of the steel wire rope is fixedly connected to the counterweight wheel, and the other end of the steel wire rope is connected to the traction machine after passing through the counterweight wheel, traction wheel and pulley respectively, and the front and rear ends of the main beam are provided with a number of reinforcing ribs.

[0015] (3) Beneficial effects

[0016] (1) The elevator car and the counterweight device adopt a double slide rail device and a guide wheel at the same time. This technical solution adopts a double slide rail device and a guide wheel device, which can effectively disperse the pressure of the counterweight block and reduce the wear of a single slide rail. At the same time, the guide wheel device can make the movement of the counterweight block on the slide rail smoother, reduce friction, thereby reducing the wear rate of the slide rail, and can reduce the shaking of the counterweight block during operation, indirectly reducing the impact on the limit rod, reducing the shaking and offset of the elevator car and the counterweight device when large tonnage is loaded, ensuring smooth operation, and improving operation accuracy and stability.

[0017] (2) The lubrication box and nozzles installed inside the counterweight device can provide automatic lubrication for the slide rail, further reducing the friction between the slide rail and the counterweight block, and delaying the wear of the slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is an overall schematic diagram of the utility model;

[0019] Figure 2 This is an overall cross-sectional view of the utility model;

[0020] Figure 3 Schematic diagram of the first double slide rail and the second double slide rail in the present invention;

[0021] Figure 4 This is a schematic diagram of the guide wheel device in the present utility model;

[0022] In the figure: 1-hoistway, 10-speed limiter, 11-first shock absorber, 2-traction device, 20-main beam, 21-traction machine, 22-traction sheave, 23-wire rope, 3-elevator car, 30-pulley, 31-automatic detection device, 32-second shock absorber, 4-counterweight device, 40-counterweight block, 41-lubrication box, 42-nozzle, 43-counterweight wheel 51-first double slide rail device, 511-first slide rail, 512-second slide rail, 52-second double slide rail device, 521-third slide rail, 522-fourth slide rail, 53-guide wheel device, 530-guide plate, 531-guide plate. DETAILED DESCRIPTION

[0023] The following is a combination of the appended examples of the present invention Figure 1 -Attached Figure 4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0024] Example 1: Figure 1As shown, the first specific embodiment of the utility model provides a comfortable, stable and large-tonnage elevator, comprising: a shaft 1, a traction device 2 is fixedly connected to the top of the shaft 1, an elevator car 3 is fixedly connected to one end of the traction device 2, and a counterweight device 4 is fixedly connected to the other end of the traction device 2. The elevator car 3 is slidably connected to the inner wall of the shaft 1 through a first double-rail device 51, and the counterweight device 4 is slidably connected to the inner wall of the shaft 1 through a second double-rail device 52. A lubrication box 41 is provided inside the counterweight device 4, and nozzles 42 are symmetrically provided on both sides of the lubrication box 41. By simultaneously adopting a double slide rail device and combining it with a guide wheel in the elevator car 3 and the counterweight device 4, this technical solution adopts a double slide rail device and a guide wheel device, which can effectively disperse the pressure of the counterweight block and reduce the wear of a single slide rail. At the same time, the guide wheel device can make the movement of the counterweight block on the slide rail smoother, reduce friction, and thus reduce the wear rate of the slide rail. The lubrication box and nozzle arranged inside the counterweight device can provide automatic lubrication for the slide rail, further reducing the friction between the slide rail and the counterweight block, delaying the wear of the slide rail, and the combined use of the double slide rail device and the guide wheel can reduce the shaking of the counterweight block during operation, indirectly reducing the impact on the limit rod, and reducing the shaking and deviation of the elevator car and the counterweight device when large tonnage is loaded, ensuring smooth operation, and improving operation accuracy and stability.

[0025] The first double-rail device 51 includes a first rail 511 and a second rail 512 fixedly connected to the inner walls of the shaft 1 on both sides. The second double-rail device 52 includes a third rail 521 and a fourth rail 522 fixedly connected to the inner walls of the shaft 1 on both sides. The outer walls of the first rail 511, the second rail 512, the third rail 521 and the fourth rail 522 are all slidably connected to the guide wheel device 53. The first rail, the second rail, the third rail and the fourth rail provide multiple support points for the elevator car and the counterweight device, which can more evenly share the large tonnage load and reduce deformation and instability caused by excessive local pressure. At the same time, it makes the car and the counterweight device more stable during operation, reduces the risk of shaking and tilting, and improves the stability of the elevator operation. For large-tonnage elevators, this stable operating state is crucial to ensuring the safe transportation of goods.

[0026] Moreover, the combination of multiple slide rails and guide wheel devices 53 forms a redundant design, that is, even if one of the slide rails or guide wheels fails, the other slide rails and guide wheels can still maintain the stable operation of the elevator to a certain extent, reducing the risk of safety accidents caused by failure of a single component, providing additional protection for the safe operation of the elevator, and improving the reliability of the elevator.

[0027] The guide wheel device 53 includes a guide plate 530 that is respectively connected to the first double-slide rail device 51 and the second double-slide rail device 52. Guide wheels 531 are fixed to the four corners of the guide plate 530 on the side close to the first double-slide rail device 51 and the second double-slide rail device 52. Each guide wheel 531 is connected to the outer wall of the first double-slide rail device 51 and the second double-slide rail device 52. The guide wheels 531 are set at the four corners of the guide plate 530, making the guidance of the elevator car 3 and the counterweight device 4 more comprehensive and stable. The four guide wheels 531 provide support and guiding force from different directions. No matter what direction of external force interference the elevator is subjected to during operation, it can effectively maintain its stable operation on the slide rail. For large-tonnage elevators, they are easily subjected to uneven forces when carrying heavy objects. This multi-guide wheel design can better cope with these situations and ensure the smooth operation of the elevator. At the same time, each guide wheel 531 is fitly connected to the outer wall of the first double slide rail device 51 and the second double slide rail device 52, ensuring the accuracy of the guidance, preventing the car and the counterweight device from deviating from the track during operation, and improving the operation accuracy. At the same time, it also reduces the gap between the guide wheel and the slide rail, reduces the shaking and noise caused by the gap, and improves the riding comfort.

[0028] In addition, the guide wheel device 53 shares the pressure during the operation of the elevator through multiple guide wheels 531. When the elevator car 3 or the counterweight device 4 moves on the slide rail, the guide wheel 531 bears part of the weight and friction, reducing the pressure directly borne by the slide rail and reducing the risk of deformation and damage to the slide rail.

[0029] A speed limiter 10 is fixedly connected to one side of the top of the hoistway 1, and a first shock absorber 11 is provided at the bottom of the hoistway 1. The speed limiter 10 can monitor the elevator's operating speed in real time. When the speed exceeds the set value, the speed limiter 10 immediately triggers the safety brake device, slowing down and stopping the elevator, effectively preventing the danger of overspeeding and ensuring the safety of passengers and cargo. The first shock absorber is located at the bottom of the hoistway, which can effectively absorb and reduce the vibration generated by the elevator during operation, reducing the noise level.

[0030] A pulley 30 is fixedly connected to the center of the top of the elevator car 3. An automatic detection device 31 is fixedly connected to one side of the top of the elevator car 3. A second shock-absorbing device 32 is fixedly connected to the bottom of the elevator car 3. The second shock-absorbing device at the bottom of the elevator car 3 effectively reduces vibrations generated during elevator operation. Large-tonnage elevators are prone to significant vibrations during starting, stopping, and operation due to their heavy loads. The second shock-absorbing device absorbs and cushions these vibrations, improving ride comfort.

[0031] The counterweight assembly 4 includes a counterweight 40, the top of which is fixedly connected to the bottom of a lubrication box 41. A counterweight pulley 43 is fixedly connected to the top of the lubrication box 41. The counterweight 40, lubrication box 41, and counterweight pulley 43 are connected in sequence to form a compact, integrated structure. This layout enhances the stability of the counterweight assembly during operation, reducing instability caused by loose or wobbling components. For high-tonnage elevators, a stable counterweight assembly is crucial for balancing the car weight and ensuring smooth operation.

[0032] The lubrication box 41 is located at the top of the counterweight 40. Its fixed connection to the counterweight 40 provides a certain degree of guidance for the counterweight 40. During elevator operation, the counterweight moves up and down along the slide rails. The presence of the lubrication box can reduce the lateral shaking of the counterweight and improve the running accuracy of the counterweight on the slide rails.

[0033] The counterweight pulley 43, located at the top of the lubrication box, further enhances the overall guidance of the counterweight device 4. The counterweight pulley 43 works in conjunction with the wire rope 23 to ensure stable vertical movement of the counterweight device 4. The traction device 2 includes a main beam 20 fixedly connected to the top of the shaft 1. A traction machine 21 is fixedly connected to the main beam 20. A traction sheave 22 is fixedly connected to the bottom of the traction machine 21. A wire rope 23 is wrapped around the outside of the traction machine 21. One end of the wire rope 23 is fixedly connected to the counterweight pulley 43. The other end of the wire rope 23 passes through the counterweight pulley 43, traction sheave 22, and pulley 30 before connecting to the traction machine 21. The main beam 20 is fixedly connected to the top of the shaft 1, providing a stable mounting base for the traction device 2. The traction machine 21, as a power source, can provide stable and precise power output. By controlling the speed and torque of the traction machine 21, precise control of the elevator car 3 and the counterweight device 4 can be achieved, ensuring smooth operation of the elevator under different loads and operating speeds. The cooperation between the traction sheave 22 and the traction machine 21 can effectively transmit power to the wire rope 23, driving the elevator car 3 and the counterweight device 4 to move up and down.

[0034] Working principle: When in use, start the traction machine 21 to drive the traction sheave 22 to rotate. When the traction sheave 22 rotates, the wire rope 23 starts to move under the friction of the traction sheave 22. The counterweight block 40 moves up and down in the shaft 1 through the second double slide rail device 52 with the traction of the wire rope. The other end of the wire rope 23 passes around the counterweight sheave 43, the traction sheave 22 and the pulley 30 and is connected to the traction machine 21, thereby driving the elevator car 3 to move. The elevator car 3 slides up and down within the hoistway 1 via the first double-rail assembly 51. The guide wheels 531 at the four corners of the guide plate 530 are respectively connected to the outer walls of the first double-rail assembly 51 and the second double-rail assembly 52. ​​The guide wheels 531 ensure that the movement of the elevator car 3 and the counterweight assembly 4 on the rails is more stable and precise, reducing shaking and deviation. During the operation of the elevator, the lubrication box 41 inside the counterweight assembly 4 automatically lubricates the third rail 521 and the fourth rail 522 of the second double-rail assembly 52 through the nozzles 42 arranged symmetrically on both sides. At this time, the speed limiter 10 on the top side of the hoistway 1 monitors the operating speed of the elevator in real time. When the elevator speed exceeds the set value, the speed limiter 10 immediately activates. The first shock absorber 11 at the bottom of the hoistway 1 and the second shock absorber 32 at the bottom of the elevator car 3 absorb and reduce the vibration generated by the elevator during operation. When the elevator reaches the target floor, the traction machine 21 gradually slows down and stops. The elevator car 3 and the counterweight device 4 are guided by the slide rail and the guide wheel device and stop smoothly at the designated position. The automatic detection device 31 continuously monitors the state of the elevator and is ready for the next operation.

Claims

1. A comfortable, stable, large-tonnage freight elevator, comprising: A shaft (1), wherein the top of the shaft (1) is fixedly connected to a traction device (2), one end of the traction device (2) is fixedly connected to an elevator car (3), and the other end of the traction device (2) is fixedly connected to a counterweight device (4), characterized in that the elevator car (1) is slidably connected to the inner wall of the shaft (1) through a first double-rail device (51), and the counterweight device (4) is slidably connected to the inner wall of the shaft (1) through a second double-rail device (52), and a lubrication box (41) is provided inside the counterweight device (4), and nozzles (42) are symmetrically provided on both sides of the lubrication box (41).

2. A comfortable, stable, large-tonnage freight elevator according to claim 1, characterized in that: The first double-slide rail device (51) comprises a first slide rail (511) and a second slide rail (512) fixedly connected to the inner walls on both sides of the well (1); the second double-slide rail device (52) comprises a third slide rail (521) and a fourth slide rail (522) fixedly connected to the inner walls on both sides of the well (1); and the outer walls of the first slide rail (511), the second slide rail (512), the third slide rail (521) and the fourth slide rail (522) are all slidably connected to a guide wheel device (53).

3. A comfortable, stable, large-tonnage freight elevator according to claim 2, characterized in that: The guide wheel device (53) includes a guide plate (530) respectively connected to the first double-slide rail device (51) and the second double-slide rail device (52); guide wheels (531) are fixed on the four corners of the guide plate (530) on one side close to the first double-slide rail device (51) and the second double-slide rail device (52); each guide wheel (531) is connected to the outer wall of the first double-slide rail device (51) and the second double-slide rail device (52).

4. A comfortable, stable and large-tonnage freight elevator according to claim 1, characterized in that: A speed limiter (10) is fixedly connected to one side of the top end of the well (1), and a first shock absorbing device (11) is provided at the bottom end of the well (1).

5. A comfortable, stable and large-tonnage freight elevator according to claim 1, characterized in that: A pulley (30) is fixedly connected to the middle of the top of the elevator car (3), an automatic detection device (31) is fixedly connected to one side of the top of the elevator car (3), and a second shock-absorbing device (32) is fixedly connected to the bottom of the elevator car (3).

6. A comfortable, stable and large-tonnage freight elevator according to claim 1, characterized in that: The counterweight device (4) comprises a counterweight block (40), the top end of the counterweight block (40) is fixedly connected to the bottom end of the lubrication box (41), and the top end of the lubrication box (41) is fixedly connected to a counterweight wheel (43).

7. A comfortable, stable and large-tonnage freight elevator according to claim 1, characterized in that: The traction device (2) includes a main beam (20) fixedly connected to the top of the hoistway (1), a traction machine (21) fixedly connected to the main beam (20), a traction wheel (22) fixedly connected to the bottom of the traction machine (21), a steel wire rope (23) wound around the outside of the traction machine (21), one end of the steel wire rope (23) fixedly connected to the counterweight wheel (43), and the other end of the steel wire rope (23) passing around the counterweight wheel (43), the traction wheel (22) and the pulley (30) and then connected to the traction machine (21).

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