Turning gear for elevator without machine room

Abstract

The utility model discloses a turning gear of a machine-room-less elevator, which is used for improving the emergency rescue efficiency and safety of the machine-room-less elevator. A first contact part and a second contact part are arranged in parallel and are fixedly connected through a connecting part, the distance between the first contact part and the second contact part is larger than the size of a guide rail, and the size of the guide rail is the distance from the plane of a bottom plate of a T-shaped rail to the face, parallel to the bottom plate, of a side rail. The second contact part is fixedly connected with the lever arm, the lever arm is perpendicular to the bottom plate part of the T-shaped rail, the free end of the lever arm is connected with one end of the euphroe, and the other end of the euphroe is connected with a lift car.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a manual emergency rescue device for a machine-roomless elevator. Background Art

[0002] With the acceleration of the urbanization process, high-rise buildings are increasing day by day. Machine-roomless elevators have been widely used in modern buildings due to their high space utilization rate and compact structure. However, compared with traditional machine-room elevators, the rescue operations of machine-roomless elevators face more challenges in case of emergencies. Due to the special structural design of machine-roomless elevators, their rescue equipment and operation procedures are significantly different from those of machine-room elevators, resulting in greater difficulty in implementing emergency rescue.

[0003] At present, there is no unified national standard or industry standard for the manual rescue devices of machine-roomless elevators at home and abroad. The rescue devices provided by each elevator manufacturer have their own advantages in design, lacking unity and universality. In actual operation, due to the lack of standardized guidance, rescue personnel may encounter problems such as complex operation, low efficiency and even potential safety hazards in the face of emergencies.

[0004] Especially when the elevator is powered off or fails, trapping people. If the weights of the car and the counterweight are balanced, it is difficult to move the car by traditional manual or electric brake release methods, which increases the difficulty and risk of rescue. In addition, the existing rescue devices may have potential safety hazards due to improper design or insufficient maintenance in some cases, and cannot effectively guarantee the safety of passengers. Summary of the Utility Model

[0005] Embodiments of the utility model provide a manual emergency rescue device for a machine-roomless elevator to solve the deficiencies in the prior art and improve the efficiency and safety of emergency rescue of machine-roomless elevators.

[0006] The utility model provides a manual emergency rescue device for a machine-roomless elevator, which is applied to a T-shaped track and includes: a first contact part, a second contact part, a connecting part, a lever arm and a rope tightener; the first contact part and the second contact part are arranged in parallel and fixedly connected through the connecting part. The distance between the first contact part and the second contact part is greater than the rail size, and the rail size is the distance from the bottom plate plane of the T-shaped track to the plane parallel to the bottom plate on the side rail. The lever arm is fixedly connected to the second contact part and is perpendicular to the bottom plate part of the T-shaped track. One end of the free end of the lever arm is connected to one end of the rope tightener, and the other end of the rope tightener is connected to the car.

[0007] Preferably, a first anti-slip part is arranged on the side of the first contact part in contact with the bottom plate plane of the T-shaped track; a second anti-slip part is arranged on the side of the second contact part in contact with the side rail of the T-shaped track.

[0008] Preferably, the connecting part is a connecting rod, a connecting plate or a connecting surface surrounding the outer surface shape of the T-shaped track. Among them, there is no contact between the connecting rod, the connecting plate or the connecting surface surrounding the outer surface shape of the T-shaped track and the T-shaped track.

[0009] Preferably, the lever arm is connected to one end of the plane where the second contact part is located and away from the second contact part. Among them, the plane where the second contact part is located is parallel to the surface of the side rail of the T-shaped track that is parallel to the bottom plate.

[0010] Preferably, a diagonal brace is provided between the lever arm and the plane where the second contact part is located.

[0011] Preferably, a metal buckle for hanging a rope is provided below the free end of the lever arm.

[0012] Preferably, the wire tightener includes: a shaft seat, a ratchet shaft, a ratchet, a wire-tightening pawl, a wire-releasing pawl and a force-increasing rod; the ratchet shaft is rotatably connected to the shaft seat, the ratchet is fixedly connected to the ratchet shaft, the wire-tightening pawl is connected in cooperation with the ratchet tooth groove, the other end of the wire-tightening pawl is rotatably connected to the wire-tightening pawl shaft, the first return torsion spring is sleeved on the wire-tightening pawl shaft, one end is installed on the force-increasing rod, and the other end is installed on the wire-tightening pawl; the force-increasing rod is Y-shaped, one end is a handle, the other end is a U-shaped mounting seat, the two ends of the U-shaped mounting seat are rotatably connected to the ratchet shaft, a wire-tightening pawl shaft is fixed between the U-shaped mounting seats, the second return torsion spring is sleeved on the ratchet shaft, one end is installed on the force-increasing rod, and the other end is installed on the shaft seat; the wire-releasing pawl is connected in cooperation with the ratchet tooth groove, the wire-releasing pawl shaft is fixed between the shaft seats, one end of the wire-releasing pawl is rotatably connected to the wire-releasing pawl shaft, the other end is provided with a wire-releasing pull ring, the third return torsion spring is sleeved on the wire-releasing pawl shaft, one end is installed on the wire-releasing pawl, and the other end is installed on the shaft seat; a steel wire rope is wound on the shaft seat, and the steel wire rope passes through the shaft seat and is connected to the free end of the lever arm.

[0013] Preferably, a grip is fixedly connected to the shaft seat.

[0014] Preferably, the first anti-slip part and the second anti-slip part are anti-slip rubber strips with a plurality of parallel convex rib structures or tooth structures made of metal.

[0015] Preferably, at the edge of the plane where the second contact part is located, a folding ear perpendicular to it is provided.

[0016] In the embodiment of the present utility model, the machine - room - less elevator car - turning device effectively solves multiple challenges in the prior art with its excellent versatility, simple operation process, significantly improved safety, and high - efficiency rescue ability. Its design is ingeniously applicable to various standard T - shaped guide rails, simplifies the rescue operation, and enhances the connection stability with the guide rail by adding structures such as anti - slip parts and diagonal braces, reducing the risk of car sliding or offset. Utilizing the lever principle and ratchet - pawl mechanism, this device can smoothly move the car with relatively little human effort, especially suitable for rescue scenarios when the car and counterweight are in balance. In addition, the device is easy to maintain, has a stable structure, strong adaptability, and can be quickly unlocked in case of emergency, greatly improving the rescue speed. The present invention not only meets the rescue requirements of machine - room - less elevators in actual operation but also contributes to promoting industry standardization and improving the overall safety level. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the first three - dimensional structural schematic diagram of the machine - room - less elevator car - turning device according to the embodiment of the present utility model;

[0018] Figure 2 is the second three - dimensional structural schematic diagram of the machine - room - less elevator car - turning device according to the embodiment of the present utility model;

[0019] Figure 3 is the first three - dimensional structural schematic diagram of the wire tightener in the embodiment of the present utility model;

[0020] Figure 4 is the second three - dimensional structural schematic diagram of the wire tightener in the embodiment of the present utility model;

[0021] Figure 5 is the sectional structural schematic diagram when the machine - room - less elevator car - turning device in the embodiment of the present utility model is in use;

[0022] In the drawings: First contact part - 1, Second contact part - 2, Connection part - 3, Lever arm - 4, Wire tightener - 5, T - shaped track - A, First anti - slip part - 101, Second anti - slip part - 102, Diagonal brace - 401, Metal snap - ring - 402, Axle seat 501, Ratchet shaft 502, Ratchet 503, Tightening pawl 504, Pay - out pawl 505, Force - adding rod 506, Tightening pawl shaft 507, First return torsion spring 508, Handle 5061, U - shaped mounting seat 5062, Folded ear 509, Second return torsion spring 510, Pay - out pawl shaft 511, Pay - out pull - ring 512, Third return torsion spring 513, Steel wire rope 514, Grip 515. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to improve the rescue efficiency and safety of machine room-less elevators in emergency situations, ensure that trapped persons can be rescued quickly, and enhance the simplicity and versatility of rescue operations, an embodiment of the utility model provides a winching device for a machine room-less elevator. The preferred embodiments of the utility model are described below in conjunction with the accompanying drawings of the specification.

[0024] The utility model provides a winching device for a machine room-less elevator, which is applied to a T-shaped track A and comprises: a first contact portion 1, a second contact portion 2, a connecting portion 3, a lever arm 4 and a rope tightener 5; the first contact portion 1 is arranged in parallel with the second contact portion 2 and is fixedly connected through the connecting portion 3; the distance between the first contact portion 1 and the second contact portion 2 is greater than the guide rail size; the guide rail size is the distance from the bottom plate plane of the T-shaped track A to the surface on the side rail parallel to the bottom plate; the lever arm 4 is fixedly connected to the second contact portion 2, the lever arm 4 is perpendicular to the bottom plate portion of the T-shaped track A, the free end of the lever arm 4 is connected to one end of the rope tightener 5, and the other end of the rope tightener 5 is connected to the car.

[0025] Specifically, the winching device of the machine room-less elevator in the utility model comprises a first contact portion 1 and a second contact portion 2, which are arranged in parallel and fixedly connected by a connecting portion 3 to form a stable structural frame. In particular, the distance between the two contact portions is designed to be greater than the distance from the bottom plate plane of the T-shaped track A to the surface of the side rail parallel to the bottom plate, so as to ensure that the device can be installed obliquely on the T-shaped track A of the machine room-less elevator. A lever arm 4 is fixedly connected to the second contact portion 2, and the lever arm 4 is perpendicular to the bottom plate portion of the T-shaped track A, and its free end is connected to one end of a rope tightener 5, while the other end of the rope tightener 5 is connected to the car, so that by operating the rope tightener 5, a torque can be generated to push or pull the car to achieve emergency rescue.

[0026] Working principle: In an emergency, when the rope tightener on the lever arm 4 is hooked to the car, the weight of the car presses down, causing the lever arm 4 to tilt, and prying the entire device to produce a tilting action. In this process, the second contact part 2 and the first contact part 1 fit tightly on the T-track A, and the friction generated is used to firmly fix the device on the track to prevent sliding during the rescue process. Subsequently, the operator applies force through the force rod 506 to drive the ratchet 503 to rotate, and the one-way locking mechanism of the ratchet 503 is used to gradually tighten the rope. As the rope shortens, the distance between the lever arm 4 and the car decreases, allowing the car to move smoothly and effectively, so that it moves along the T-track A to the nearest leveling position to safely release the trapped passengers. When the car needs to be moved up, the device is clamped on the T-shaped track A on the upper part of the car, and the rope tensioner is hung on the anchor point on the top of the car to move it up; when the car needs to be moved down, the device is clamped on the T-shaped track A on the lower part of the car, and the rope tensioner is hung on the anchor point at the bottom of the car, and the rope tensioner is operated to move it down.

[0027] The first contact part 1 is provided with a first anti-skid part 101 on the side in contact with the bottom plane of the T-track A; the second contact part 2 is provided with a second anti-skid part 102 on the side in contact with the side rail of the T-track A. The first anti-skid part 101 and the second anti-skid part 102 are anti-skid rubber strips with a plurality of parallel convex ridges or a tooth structure of a metal material to increase friction or bite force and prevent the device from sliding during the rescue process. The presence of the anti-skid part ensures that the winch device maintains stable contact with the T-track A and can maintain a fixed position even when subjected to force.

[0028] The connecting part 3 is a connecting rod, a connecting plate or a connecting surface around the outer surface shape of the T-track A, wherein the connecting rod, the connecting plate or the connecting surface around the outer surface shape of the T-track A does not contact the T-track A. In the simplest case, the first contact part 1 and the second contact part 2 can be a relatively small, nearly linear rod. If its stability can be guaranteed, the first contact part 1 and the second contact part 2 can be connected at the same end of the same side using a connecting rod to form a "匚" shape; more stable, a connecting plate can be used for connection; or better, a connecting surface of the shape shown in the figure in the embodiment of the utility model is used, which is the same as the outer contour of the T-track A, and a connecting surface between the first contact part 1 and the second contact part 2 is formed around the T-track A. At the edge of the plane where the second contact part 2 is located, a folding ear perpendicular to it is provided, so that when the winch device is stuck on the T-track A, it will not fall from one side, and the size of the folding ear can make the winch device be installed on the T-track A when the first contact part 1 is close to the T-track A.

[0029] The lever arm 4 is connected to an end of the lever arm 4 that is away from the second contact portion 2 on the plane where the second contact portion 2 is located, wherein the plane where the second contact portion 2 is located is parallel to the surface of the side rail of the T-track A that is parallel to the bottom plate. A diagonal brace 401 is provided between the lever arm 4 and the plane where the second contact portion 2 is located. The existence of the diagonal brace 401 provides additional support for the lever arm 4 to prevent bending or deformation when a force is applied. The structural strength of the lever arm 4 is enhanced to ensure stable operation even under high loads.

[0030] Below the free end of the lever arm 4, there is a metal snap 402 of the lanyard. The metal snap 402 can detachably install a cable tightener. The metal snap 402 can use a lobster clasp or a C-shaped metal ring, with internal threads provided at both ends, which cooperate with a screw rod to form a snap. The cable tightener includes: a shaft seat 501, a ratchet shaft 502, a ratchet 503, a cable tightening pawl 504, a cable releasing pawl 505, and a force applying rod 506; the ratchet shaft 502 is rotatably connected to the shaft seat 501, the ratchet 503 is fixedly connected to the ratchet shaft 502, the cable tightening pawl 504 is connected in cooperation with the tooth groove of the ratchet 503, the other end of the cable tightening pawl 504 is rotatably connected to the cable tightening pawl shaft 507, the first return torsion spring 508 is sleeved on the cable tightening pawl shaft 507, with one end installed on the force applying rod 506 and the other end installed on the cable tightening pawl 504; the force applying rod 506 is Y-shaped, with one end being a handle 5061 and the other end being a U-shaped mounting seat 5062. The two ends of the U-shaped mounting seat 5062 are rotatably connected to the ratchet shaft 502, and a cable tightening pawl shaft 507 is fixed between the U-shaped mounting seats 5062. The second return torsion spring 510 is sleeved on the ratchet shaft 502, with one end installed on the force applying rod 506 and the other end installed on the shaft seat 501; the cable releasing pawl 505 is connected in cooperation with the tooth groove of the ratchet 503, the cable releasing pawl shaft 511 is fixed between the shaft seats 501, one end of the cable releasing pawl 505 is rotatably connected to the cable releasing pawl shaft 511, and the other end is provided with a cable releasing pull ring 512. The third return torsion spring 513 is sleeved on the cable releasing pawl shaft 511, with one end installed on the cable releasing pawl 505 and the other end installed on the shaft seat 501; a steel wire rope 514 is wound on the shaft seat 501, and the steel wire rope 514 passes through the shaft seat 501 and is connected to the free end of the lever arm 4. A grip 515 is fixedly connected to the shaft seat 501.

[0031] When the operator presses down the handle 5061 of the force applying rod 506, the U-shaped mounting seat 5062 drives the cable tightening pawl shaft 507 to move along an arc with the ratchet shaft 502 as the center and the distance between the ratchet shaft 502 and the cable tightening pawl shaft 507 as the radius. The cable tightening pawl shaft 507 drives the cable tightening pawl 504 to move. However, due to the one-way locking characteristic of the ratchet 503, the ratchet 503 drives the ratchet shaft 502 to rotate only in one direction, winding the steel wire rope 514 around the ratchet shaft 502. The first return torsion spring 508 ensures the initial position between the force applying rod 506 and the cable tightening pawl 504, and the second return torsion spring 510 ensures the initial position between the force applying rod 506 and the shaft seat 501, so that after pressing down the handle 5061 of the force applying rod 506, the handle 5061 can still return to its original position and be pressed down again.

[0032] The one-way locking of the ratchet 503 depends on the cable releasing pawl 505. When the rope needs to be tightened or loosened, the cable releasing pawl 505 will latch onto the ratchet 503, preventing the ratchet 503 from sliding in the reverse direction.

[0033] When the rope needs to be released, the operator loosens the force - adding rod 506 and pulls the wire - releasing pull - ring 512, so that the ratchet wheel 503 is disengaged from the wire - releasing pawl 505, and then pulls the rope, allowing the rope to be released controllably under the control of the wire - releasing pawl 505. The third return torsion spring 513 ensures the initial positions of the shaft seat 501 and the wire - releasing pawl 505.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, then the present utility model also intends to include these changes and modifications.

Claims

1. A winching device for a machine room-less elevator, applied on a T-shaped track, characterized in that: include: A first contact portion, a second contact portion, a connecting portion, a lever arm and a rope tightener; the first contact portion is arranged in parallel with the second contact portion and is fixedly connected through the connecting portion, the distance between the first contact portion and the second contact portion is greater than the guide rail size, the guide rail size is the distance from the bottom plate plane of the T-shaped track to the surface of the side rail parallel to the bottom plate, the lever arm is fixedly connected to the second contact portion, the lever arm is perpendicular to the bottom plate portion of the T-shaped track, the free end of the lever arm is connected to one end of the rope tightener, and the other end of the rope tightener is connected to the car.

2. The winching device of a machine room-less elevator according to claim 1, characterized in that: A first anti-slip portion is provided on the side where the first contact portion contacts the bottom plane of the T-shaped track; a second anti-slip portion is provided on the side where the second contact portion contacts the side rail of the T-shaped track.

3. The winching device of a machine room-less elevator according to claim 1, characterized in that: The connecting portion is a connecting rod, a connecting plate or a connecting surface surrounding the outer surface shape of the T-shaped track, wherein the connecting rod, the connecting plate or the connecting surface surrounding the outer surface shape of the T-shaped track is not in contact with the T-shaped track.

4. The winching device of a machine room-less elevator according to claim 1, characterized in that: The lever arm is connected to one end away from the second contact portion on the plane where the second contact portion is located, wherein the plane where the second contact portion is located is parallel to a surface of the T-track side rail that is parallel to the bottom plate.

5. The winching device of a machine room-less elevator according to claim 4, characterized in that: An oblique support is provided between the lever arm and the plane where the second contact portion is located.

6. The winching device of a machine room-less elevator according to claim 1, characterized in that: A metal ring buckle for a hanging rope is arranged below the free end of the lever arm.

7. The winching device of a machine room-less elevator according to claim 1, characterized in that: The rope tightener comprises: an axle seat, a ratchet shaft, a ratchet, a tightening pawl, a wire-releasing pawl and a force rod; the ratchet shaft is rotatably connected to the axle seat, the ratchet is fixedly connected to the ratchet shaft, the tightening pawl is matched with the ratchet tooth groove, the other end of the tightening pawl is rotatably connected to the tightening pawl shaft, the first reset torsion spring is sleeved on the tightening pawl shaft, one end is mounted on the force rod, and the other end is mounted on the tightening pawl; the force rod is Y-shaped, one end is a handle, and the other end is a U-shaped mounting seat, both ends of the U-shaped mounting seat are rotatably connected to the ratchet shaft, and the U-shaped A tensioning pawl shaft is fixed between the mounting seats, a second reset torsion spring is sleeved on the ratchet shaft, one end of which is mounted on the force rod, and the other end is mounted on the shaft seat; the wire-releasing pawl is cooperatively connected with the ratchet tooth groove, the wire-releasing pawl shaft is fixed between the shaft seats, one end of the wire-releasing pawl is rotatably connected to the wire-releasing pawl shaft, and the other end is provided with a wire-releasing pull ring, the third reset torsion spring is sleeved on the wire-releasing pawl shaft, one end of which is mounted on the wire-releasing pawl, and the other end is mounted on the shaft seat; a steel wire rope is wound on the shaft seat, and the steel wire rope passes through the shaft seat and is connected to the free end of the lever arm.

8. The winching device of a machine room-less elevator according to claim 7, characterized in that: A handle is fixedly connected to the shaft seat.

9. The winching device of a machine room-less elevator according to claim 2, characterized in that: The first anti-slip portion and the second anti-slip portion are anti-slip rubber strips with a plurality of parallel convex ridge structures or tooth structures made of metal material.

10. The winching device of a machine room-less elevator according to claim 4, characterized in that: A folded ear perpendicular to the plane edge where the second contact portion is located is provided.

Images