Machine-room-free traction type goods elevator

Abstract

According to the traction type goods elevator without the machine room, high-speed and high-torque power output is achieved through a plurality of motors of a traction mechanism, and the research and development problem of a traditional single-motor high-speed torque motor is solved. The lift car is provided with a first anchor part, a second anchor part, a third anchor part and a fourth anchor part, and the problem of asynchronous power output based on a high-speed low-torque motor combination is solved. Specifically, a first traction rope, a second traction rope and a third traction rope of the traction mechanism wind each traction rope on a winch under the reversing action of a first anchor part, a second anchor part, a third anchor part and a fourth anchor part, the winch realizes high-speed and high-torque power output by utilizing a novel coupling mechanism, and meanwhile, the problems of asynchronization and slipping of each motor are solved. Furthermore, the winch has a mechanical self-locking property by facing the synchronous action of the three traction ropes, and when the winch is mechanically self-locked, the traction mechanism can prevent slipping. Therefore, the defect that a traditional goods elevator is difficult to realize high speed and heavy load is overcome.

Description

Technical Field

[0001] The present application relates to the technical field of elevator equipment, and in particular to a machine room-less traction freight elevator. Background Art

[0002] Freight elevators, as a subdivision of elevators, are widely used in the elevator spare area of ​​high-rise buildings. In fact, the biggest difference between freight elevators and passenger elevators is that freight elevators have large car sizes, heavy weight, and high loads. In some areas, freight elevators are used as emergency passages, such as medical rescue. These application requirements for freight elevators are reflected in the design and structural requirements of freight elevators, mainly focusing on the demand for high-torque power systems, such as high-torque traction machines. It is worth mentioning that the timeliness of elevators is also an important indicator. At present, traditional freight elevators have bottlenecks in the research and development and application of high-speed and high-torque traction machines. In fact, the difficulties in the research and development and application of such high-speed and high-torque traction machines are mainly reflected in the high cost. Specifically, high-speed and high-torque traction machines mostly use electric motors. The simple development of electric motors is difficult, costly, and has a long cycle, and most importantly, the success rate is low. For this reason, it is necessary to propose a machine room-less traction freight elevator in view of the defects of traditional freight elevators that are difficult to achieve high speed and large load. Utility Model Content

[0003] It is necessary to propose a machine room-less traction freight elevator to address the shortcomings of traditional freight elevators, which are difficult to achieve high speed and large load capacity.

[0004] The present application relates to a machine room-less traction freight elevator, comprising:

[0005] The car is provided with a first anchor portion, a second anchor portion, a third anchor portion and a fourth anchor portion, wherein the center point of the first anchor portion, the center point of the second anchor portion and the center point of the third anchor portion are arranged in sequence to form three vertices of an equilateral triangle, the center point of the fourth anchor portion is at the centroid of the equilateral triangle, and the center point of the fourth anchor portion is at the geometric center of the top surface of the car;

[0006] A traction mechanism, comprising a first traction rope, a second traction rope and a third traction rope, wherein the first traction rope is hinged to the first anchor portion and the first traction rope is hinged to the fourth anchor portion, the second traction rope is hinged to the second anchor portion and the second traction rope is hinged to the fourth anchor portion, the third traction rope is hinged to the third anchor portion and the third traction rope is hinged to the fourth anchor portion, a first end of the first traction rope is fixedly connected to a working surface, a first end of the second traction rope is fixedly connected to the working surface, and a first end of the third traction rope is fixedly connected to the working surface;

[0007] The steering mechanism comprises a first fixed pulley, a second fixed pulley and a third fixed pulley, wherein the first traction rope is hinged to the first fixed pulley, the second traction rope is hinged to the second fixed pulley, and the third traction rope is hinged to the third fixed pulley;

[0008] The traction mechanism includes multiple motors, a counterweight box and a winch, the power shaft of each motor is hinged to the winch, the first traction rope is hinged to the winch, the second traction rope is hinged to the winch, and the third traction rope is hinged to the winch. The second end of the first traction rope, the second end of the second traction rope and the second end of the third traction rope are all fixedly connected to the counterweight box.

[0009] The present application relates to a machine room-less traction freight elevator, which realizes high-speed and high-torque power output through multiple motors of the traction mechanism, solving the research and development difficulties of the traditional single-motor high-speed torque motor. The car is provided with a first anchor, a second anchor, a third anchor and a fourth anchor, which solves the problem of asynchronous power output based on the combination of high-speed and low-torque motors. Specifically, the first traction rope, the second traction rope and the third traction rope of the traction mechanism are wound around the winch under the action of the reversal of the first anchor, the second anchor, the third anchor and the fourth anchor, and the winch uses a new coupling mechanism to realize high-speed and high-torque power output, and at the same time solves the problem of asynchronous and slipping of each motor. Furthermore, the winch has mechanical self-locking in the face of the synchronous action of the three traction ropes. When the winch is mechanically self-locked, the traction mechanism can prevent slipping. This solves the defect of traditional freight elevators that it is difficult to achieve high speed and large load. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A top view of a machine roomless traction freight elevator (showing the top surface of the car) provided in accordance with one embodiment of the present application.

[0011] Figure 2 A location diagram of a machine room-less traction freight elevator in an elevator shaft provided in one embodiment of the present application.

[0012] Figure 3 A schematic structural diagram of a traction mechanism of a machine room-less traction freight elevator provided in one embodiment of the present application.

[0013] Figure 4 This is a schematic diagram of the enlarged structure of point A of a machine room-less traction freight elevator provided in one embodiment of the present application.

[0014] Reference numerals:

[0015] 100 - car; 110 - first anchor; 120 - second anchor; 130 - third anchor; 140 - fourth anchor;

[0016] 141- fourth fixed pulley; 142- fifth fixed pulley; 143- sixth fixed pulley; 200- traction mechanism;

[0017] 210-first traction rope; 220-second traction rope; 230-third traction rope; 300-steering mechanism;

[0018] 310-first fixed pulley; 320-second fixed pulley; 330-third fixed pulley; 400-traction mechanism;

[0019] 410-motor; 420-counterweight box; 430-capstan; 431-sleeve; 432-load bearing shaft; 433-flying ring;

[0020] 434-first ring body; 435-second ring body; 436-inner groove; 437-card slot; 440-telescopic device;

[0021] 441-first spring; 442-second spring; 443-limiting pin; 500-locking rod;

[0022] 600-Connection part of the car. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] The present application provides a locking device 100 .

[0025] like Figure 1 As shown, in one embodiment of the present application, a machine room-less traction freight elevator includes a car 100 , a traction mechanism 200 , a steering mechanism 300 and a traction mechanism 400 .

[0026] The car 100 is provided with a first anchor portion 110, a second anchor portion 120, a third anchor portion 130 and a fourth anchor portion 140. The center point of the first anchor portion 110, the center point of the second anchor portion 120 and the center point of the third anchor portion 130 are arranged in sequence to form three vertices of an equilateral triangle, the center point of the fourth anchor portion 140 is at the centroid of the equilateral triangle, and the center point of the fourth anchor portion 140 is at the geometric center of the top surface of the car 100.

[0027] like Figure 2As shown, the traction mechanism 200 includes a first traction rope 210, a second traction rope 220 and a third traction rope 230, the first traction rope 210 is hinged to the first anchor portion 110 and the first traction rope 210 is hinged to the fourth anchor portion 140, the second traction rope 220 is hinged to the second anchor portion 120 and the second traction rope 220 is hinged to the fourth anchor portion 140, the third traction rope 230 is hinged to the third anchor portion 130 and the third traction rope 230 is hinged to the fourth anchor portion 140, the first end of the first traction rope 210 is fixedly connected to the working surface, the first end of the second traction rope 220 is fixedly connected to the working surface, and the first end of the third traction rope 230 is fixedly connected to the working surface.

[0028] The steering mechanism 300 includes a first fixed pulley 310 , a second fixed pulley 320 and a third fixed pulley 330 . The first traction rope 210 is hinged to the first fixed pulley 310 , the second traction rope 220 is hinged to the second fixed pulley 320 , and the third traction rope 230 is hinged to the third fixed pulley 330 .

[0029] The traction mechanism 400 includes multiple motors 410, a counterweight box 420 and a winch 430. The power shaft of each motor 410 is hinged to the winch 430, the first traction rope 210 is hinged to the winch 430, the second traction rope 220 is hinged to the winch 430, and the third traction rope 230 is hinged to the winch 430. The second end of the first traction rope 210, the second end of the second traction rope 220 and the second end of the third traction rope 230 are all fixedly connected to the counterweight box 420.

[0030] The present application relates to a machine room-less traction freight elevator, which realizes high-speed and high-torque power output through multiple motors 410 of the traction mechanism 400, solving the research and development difficulties of the traditional single motor 410 high-speed torque motor 410. The car 100 is provided with a first anchor 110, a second anchor 120, a third anchor 130 and a fourth anchor 140, solving the problem of asynchronous power output based on the combination of high-speed and low-torque motors 410. Specifically, the first traction rope 210, the second traction rope 220 and the third traction rope 230 of the traction mechanism 200 are wound around the winch 430 under the action of the reversal of the first anchor 110, the second anchor 120, the third anchor 130 and the fourth anchor 140. The winch 430 uses a new coupling mechanism to realize high-speed and high-torque power output, and at the same time solves the problem of asynchronous and slipping of each motor 410. Furthermore, the winch 430 has a mechanical self-locking property when facing the synchronous action of the three traction ropes. When the winch 430 is mechanically self-locked, the traction mechanism 200 can prevent slipping. This solves the defect that the traditional freight elevator is difficult to achieve high speed and large load.

[0031] like Figure 3 and Figure 4 As shown, in one embodiment of the present application, the capstan 430 includes a sleeve 431, a bearing shaft 432 and a plurality of flying rings 433. Each flying ring 433 has the same structure. The plurality of flying rings 433 are mutually nested, and the innermost flying ring 433 is sleeved on the outer circumferential surface of the bearing shaft 432. The sleeve 431 is sleeved on the outer circumferential surface of the outermost flying ring 433.

[0032] Specifically, each flying ring 433 has the same structure, and the inner diameter of each flying ring 433 may be different. The sleeve 431 is sleeved on the outer circumference of each flying ring 433, and is mainly used for self-locking cooperation when the flying ring 433 slips or stalls. The bearing shaft 432 is used to support the sleeve 431 and each flying ring 433.

[0033] like Figure 2 As shown, in one embodiment of the present application, the flying ring 433 includes a first ring body 434 and a second ring body 435. The first ring body 434 and the second ring body 435 are fixedly connected. The central axis of the first ring body 434 coincides with the central axis of the second ring body 435. The first ring body 434 extends outward from the sleeve 431. The number of the first ring bodies 434 is equal to the number of the motors 410, and each of the first ring bodies 434 is hinged to one motor 410.

[0034] Specifically, the flying ring 433 needs to be connected to the motor 410, so the first ring body 434 extends outside the sleeve 431, that is, the first ring body 434 extends along the axial center axis to extend out of the sleeve 431. At the same time, the flying ring 433 also needs to prevent the motor 410 from slipping, stalling, and other accidents, so the sleeve 431 is sleeved on the second ring body 435.

[0035] like Figure 2 As shown, in one embodiment of the present application, the sleeve 431 is provided with a plurality of groups of inner grooves 436. The plane where each group of inner grooves 436 is located is arranged in parallel in sequence along the direction of the extension line of the central axis of the sleeve 431. The structure of each group of inner grooves 436 is the same. Each of the second ring bodies 435 is provided with a group of clamping grooves 437. The plane where each group of clamping grooves 437 is located is arranged in parallel in sequence along the direction of the extension line of the central axis of the sleeve 431. The structure of each group of clamping grooves 437 is the same. The number of the inner grooves 436 is equal to the number of the clamping grooves 437, and each inner groove 436 is connected to one of the clamping grooves 437.

[0036] The winch 430 includes a plurality of telescopic devices 440. Each of the telescopic devices 440 is disposed in a conducting cavity formed by a combination of an inner groove 436 and a clamping groove 437.

[0037] Specifically, the clamping grooves 437 provided on the second ring bodies 435 are in communication with the inner grooves 436 provided on the sleeve 431. The telescopic device 440 is provided in the communication cavity between the inner grooves 436 and the clamping grooves 437. When the rotation speed of one of the second ring bodies 435 is different, that is, when slipping or stalling occurs, the telescopic device 440 will move along the axial center line of the communication cavity, thereby realizing the separation of the second ring body 435 from the sleeve 431.

[0038] The separation of the second ring body 435 and the sleeve 431 can reduce the mechanical connection between the separated second ring body 435 and other ring bodies, thereby reducing the influence between the motors 410 and ensuring that the winch 430 can achieve high-speed and high-torque power output.

[0039] In fact, the conducting cavity and the telescopic device 440 are a coupling mechanism.

[0040] In one embodiment of the present application, each group of the telescopic device 440 includes a first spring 441, a second spring 442 and a stop pin 443. The first spring 441 is disposed in the inner cavity of the inner groove 436. The second spring 442 is disposed in the inner cavity of the clamping groove 437. The stop pin 443 is disposed between the first spring 441 and the second spring 442. The first preset portion of the stop pin 443 is disposed in the inner groove 436, and the second preset portion of the stop pin 443 is disposed in the clamping groove 437.

[0041] Specifically, when the second ring body 435 does not rotate, the first spring 441 and the second spring 442 may both be in a compressed state or in a natural state.

[0042] The stop pin 443 is disposed between the first spring 441 and the second spring 442, the first preset portion of the stop pin 443 is disposed in the inner groove 436, and the second preset portion of the stop pin 443 is disposed in the clamping groove 437. Under the action of centrifugal force, the stop pin 443 compresses the first spring 441, and when the second preset portion stalls, the stop pin 443 enters the inner groove 436.

[0043] Furthermore, the winch 430 can be linked with the motor 410 with the help of multiple telescopic devices 440 to prevent the motor 410 from being asynchronous or slipping.

[0044] like Figure 1 As shown, in one embodiment of the present application, the first anchor portion 110, the second anchor portion 120 and the third anchor portion 130 have the same structure. The first anchor portion 110 is a movable pulley. The first anchor portion 110 is fixedly connected to the car 100.

[0045] Specifically, the first anchor 110, the second anchor 120 and the third anchor 130 are all fixed to the car 100, and the traction rope passes through each anchor. One end of the traction rope is fixed to the top of the elevator shaft, and the other end of the traction rope is connected to the motor 410. The first anchor 110, the second anchor 120 and the third anchor 130 reciprocate with the car 100, thereby achieving the effect of saving torque.

[0046] like Figure 1 As shown, in one embodiment of the present application, the fourth anchor portion 140 includes a fourth fixed pulley 141, a fifth fixed pulley 142 and a sixth fixed pulley 143. The extension direction of the central axis of the fourth fixed pulley 141, the extension direction of the central axis of the fifth fixed pulley 142 and the extension direction of the central axis of the sixth fixed pulley 143 are all parallel to the top surface of the car. The extension direction of the central axis of the fourth fixed pulley 141, the extension direction of the central axis of the fifth fixed pulley 142 and the extension direction of the central axis of the sixth fixed pulley 143 are all in the same plane. The angle between any two of the extension direction of the central axis of the fourth fixed pulley 141, the extension direction of the central axis of the fifth fixed pulley 142 and the extension direction of the central axis of the sixth fixed pulley 143 is 60 degrees. The circumferential surface of the fourth fixed pulley 141 and the circumferential surface of the first anchor portion 110 are in the same plane. The circumferential surface of the fifth fixed pulley 142 and the circumferential surface of the second anchor portion 120 are in the same plane. The circumferential surface of the sixth fixed pulley 143 and the circumferential surface of the third anchor portion 130 are in the same plane.

[0047] Specifically, the fourth anchor portion 140 includes a fourth fixed pulley 141 , a fifth fixed pulley 142 and a sixth fixed pulley 143 . The fourth anchor portion 140 changes the force direction of the traction rope so that the traction rope is smoothly wound around the traction mechanism 400 .

[0048] like Figure 1 As shown, in one embodiment of the present application, the central axis of the first fixed pulley 310 is perpendicular to the horizontal plane. The central axis of the second fixed pulley 320 is perpendicular to the horizontal plane. The central axis of the third fixed pulley 330 is parallel to the horizontal plane. The first fixed pulley 310, the second fixed pulley 320 and the third fixed pulley 330 are all in the same horizontal plane.

[0049] Specifically, due to the three-point force, the third fixed pulley 330 needs to change the force direction of the traction rope so that the traction rope can be smoothly wound around the traction mechanism 400. The same is true for the arrangement positions of the first fixed pulley 310 and the second fixed pulley 320.

[0050] like Figure 1As shown, in one embodiment of the present application, the machine room-less traction freight elevator further includes a locking rod 500. The locking rod 500 is perpendicular to the horizontal plane. The locking rod 500 is parallel to the side wall of the car 100. The locking rod 500 is sleeved in the inner cavity of the connection part of the car 100.

[0051] Specifically, when an extreme event such as a traction rope breakage occurs, the three-point traction method will cause the car 100 to tilt. The locking rod 500 is sleeved on the slide rail of the car 100, and the slide rail of the car 100 is the connecting part of the car 100. The tilted car 100 will drive the locking rod 500 to clamp the connecting part 600 of the car 100 and form a force-bearing structure, thereby reducing the force on other traction ropes.

[0052] The present application relates to a machine room-less traction freight elevator. The first traction rope 210, the second traction rope 220 and the third traction rope 230 of the traction mechanism 200 are wound around the winch 430 under the action of the reversal of the first anchor part 110, the second anchor part 120, the third anchor part 130 and the fourth anchor part 140. The winch 430 uses a new coupling mechanism to achieve high-speed and high-torque power output, and at the same time solves the problem of asynchronous and slipping of each motor 410. Furthermore, the winch 430 has mechanical self-locking properties in the face of the synchronous action of the three traction ropes. When the winch 430 is mechanically self-locked, the traction mechanism 200 can prevent slipping. This solves the defect of traditional freight elevators that it is difficult to achieve high speed and large load.

[0053] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A machine room-less traction freight elevator, characterized in that: include: The car is provided with a first anchor portion, a second anchor portion, a third anchor portion and a fourth anchor portion, wherein the center point of the first anchor portion, the center point of the second anchor portion and the center point of the third anchor portion are arranged in sequence to form three vertices of an equilateral triangle, the center point of the fourth anchor portion is at the centroid of the equilateral triangle, and the center point of the fourth anchor portion is at the geometric center of the top surface of the car; A traction mechanism, comprising a first traction rope, a second traction rope and a third traction rope, wherein the first traction rope is hinged to the first anchor portion and the first traction rope is hinged to the fourth anchor portion, the second traction rope is hinged to the second anchor portion and the second traction rope is hinged to the fourth anchor portion, the third traction rope is hinged to the third anchor portion and the third traction rope is hinged to the fourth anchor portion, a first end of the first traction rope is fixedly connected to a working surface, a first end of the second traction rope is fixedly connected to the working surface, and a first end of the third traction rope is fixedly connected to the working surface; The steering mechanism comprises a first fixed pulley, a second fixed pulley and a third fixed pulley, wherein the first traction rope is hinged to the first fixed pulley, the second traction rope is hinged to the second fixed pulley, and the third traction rope is hinged to the third fixed pulley; The traction mechanism includes multiple motors, a counterweight box and a winch, the power shaft of each motor is hinged to the winch, the first traction rope is hinged to the winch, the second traction rope is hinged to the winch, and the third traction rope is hinged to the winch. The second end of the first traction rope, the second end of the second traction rope and the second end of the third traction rope are all fixedly connected to the counterweight box.

2. The machine room-less traction freight elevator according to claim 1, characterized in that: The capstan includes a sleeve, a load-bearing shaft and a plurality of flying rings; Each flying ring has the same structure; The plurality of flying rings are mutually nested, and the innermost flying ring is sleeved on the outer circumferential surface of the load-bearing shaft; The sleeve is sleeved on the outer circumferential surface of the flying ring located at the outermost part.

3. The machine room-less traction freight elevator according to claim 2, characterized in that: The flying ring comprises a first ring body and a second ring body; The first ring body and the second ring body are fixedly connected; The central axis of the first ring body coincides with the central axis of the second ring body; The first ring body extends outside the sleeve; The number of the first ring bodies is equal to the number of the motors, and each of the first ring bodies is hinged to a motor.

4. The machine room-less traction freight elevator according to claim 3, characterized in that: The sleeve is provided with a plurality of groups of inner grooves; The planes where each group of inner grooves are located are arranged in parallel in sequence along the extension line of the central axis of the sleeve; The structure of each set of inner grooves is the same; Each second ring body is provided with a set of slots; The planes where each group of slots are located are arranged in parallel in sequence along the extension line of the central axis of the sleeve; Each set of card slots has the same structure; The number of the inner slots is equal to the number of the card slots, and each inner slot is connected to one of the card slots.

5. The machine room-less traction freight elevator according to claim 4 is characterized in that ,The winch includes multiple sets of telescopic devices; Each set of telescopic devices is arranged in a conducting cavity formed by a combination of an inner groove and a clamping groove.

6. The machine room-less traction freight elevator according to claim 5, characterized in that: Each group of the telescopic devices includes a first spring, a second spring and a limit pin; The first spring is disposed in the inner cavity of the inner groove; The second spring is arranged in the inner cavity of the slot; The limit pin is arranged between the first spring and the second spring; the first preset part of the limit pin is arranged in the inner groove, and the second preset part of the limit pin is arranged in the clamping groove.

7. The machine room-less traction freight elevator according to claim 6, characterized in that: The first anchor portion, the second anchor portion and the third anchor portion have the same structure; The first anchor portion is a movable pulley; The first anchor portion is fixedly connected to the car.

8. The machine room-less traction freight elevator according to claim 7, characterized in that: The fourth anchor portion includes a fourth fixed pulley, a fifth fixed pulley and a sixth fixed pulley; The extension direction of the central axis of the fourth fixed pulley, the extension direction of the central axis of the fifth fixed pulley and the extension direction of the central axis of the sixth fixed pulley are all parallel to the top surface of the car; The extension direction of the central axis of the fourth fixed pulley, the extension direction of the central axis of the fifth fixed pulley and the extension direction of the central axis of the sixth fixed pulley are all in the same plane; The angle between any two of the extension direction of the central axis of the fourth fixed pulley, the extension direction of the central axis of the fifth fixed pulley, and the extension direction of the central axis of the sixth fixed pulley is 60 degrees; The circumferential surface of the fourth fixed pulley and the circumferential surface of the first anchor portion are in the same plane; The circumferential surface of the fifth fixed pulley and the circumferential surface of the second anchor portion are in the same plane; The circumferential surface of the sixth fixed pulley and the circumferential surface of the third anchor portion are in the same plane.

9. The machine room-less traction freight elevator according to claim 8, characterized in that: The central axis of the first fixed pulley is perpendicular to the horizontal plane; The central axis of the second fixed pulley is perpendicular to the horizontal plane; The central axis of the third fixed pulley is parallel to the horizontal plane; The first fixed pulley, the second fixed pulley and the third fixed pulley are all located in the same horizontal plane.

10. The machine room-less traction freight elevator according to claim 9, characterized in that: The machine room-less traction freight elevator also includes a locking rod; The locking rod is perpendicular to the horizontal plane; The locking rod and the side wall of the car are parallel to each other; The locking rod is sleeved on the connecting portion of the car.

Images