CN112093620A

CN112093620A - Elevator counterweight guide rail structure

Info

Publication number: CN112093620A
Application number: CN202010774054.9A
Authority: CN
Inventors: 邵培宏; 高聪
Original assignee: Individual
Current assignee: Jiangxi Dingyuan Construction Technology Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-12-18
Anticipated expiration: 2040-08-04
Also published as: CN112093620B

Abstract

The invention discloses a counterweight guide rail structure of a lifting elevator, which comprises an emergency switch, a counterweight guide rail and a counterweight guide rail, wherein the emergency switch comprises two guide rails which are arranged in parallel from left to right, and the guide rails are arranged vertically; the guide rail is C-shaped, and sliding grooves are formed in the inner front end surface and the inner rear end surface of the guide rail and matched with pulleys of the counterweight device; the sliding groove vertically penetrates through the guide rail, an equipment box is arranged outside the guide rail, a frame plate is arranged in the equipment box, a plurality of brake devices are mounted on the frame plate, an upper guide pillar and a lower guide pillar are mounted on the inner end face of the equipment box, the guide pillars penetrate through the frame plate, and nuts are assembled after the guide pillars penetrate through the frame plate; this device can realize the car brake through braking counterweight, restraines the car trend of tenesmus.

Description

Elevator counterweight guide rail structure

Technical Field

The invention relates to a counterweight guide rail structure of a lifting elevator.

Background

An elevator is a vertical elevator powered by an electric motor and equipped with a box-like car for carrying people or cargo in a multi-story building. There are also steps, where the tread plates are mounted on a track for continuous operation, commonly known as escalators or moving walkways. A fixed elevator apparatus serving a predetermined floor. A vertical lift elevator has a car that travels between at least two vertical rows of rigid guide rails. The size and the structural form of the car are convenient for passengers to access or load and unload goods. It is customary to use elevators as a generic term for vertical transport means in buildings, irrespective of their drive mode. According to the speed, the elevator can be divided into a low-speed elevator (less than 1 m/s), a high-speed elevator (1-2 m/s) and a high-speed elevator (more than 2 m/s). The hydraulic elevator begins to appear in the middle of the 19 th century and is still applied to low-rise buildings until now.

Composition of

A traction system: the main function of the traction system is to output and transmit power to operate the elevator. The traction system mainly comprises a traction machine, a traction steel wire rope, a guide wheel and a diversion sheave. [1]

A guiding system: the main function of the guide system is to limit the freedom of movement of the car and counterweight so that the car and counterweight can only move up and down along the guide rails. The guide system mainly comprises a guide rail, a guide shoe and a guide rail frame.

A car: the car is the elevator assembly that transports passengers and cargo and is the working part of the elevator. The car is composed of a car frame and a car body.

Door system: the main function of the door system is to seal off landing entrances and car entrances. The door system consists of a car door, a landing door, a door opener and a door locking device.

A weight balance system: the main function of the system is to relatively balance the weight of the lift car, so that the weight difference between the lift car and the counterweight can be kept within a limit during the operation of the elevator, and the normal traction and transmission of the elevator are ensured. The system mainly comprises a counterweight and a weight compensation device.

An electric drive system: the electric drive system is used to provide power to control the speed of elevator. The electric dragging system consists of dragging motor, power supply system, speed feedback device, motor speed regulator, etc.

An electrical control system: the main function of the electrical control system is to operate and control the operation of the elevator. The electric control system mainly comprises an operating device, a position display device, a control screen (cabinet), a leveling device, a layer selector and the like.

The safety protection system comprises: the safe use of the elevator is ensured, and all accidents which endanger the personal safety are prevented. The elevator safety device comprises an elevator speed limiter, a safety clamp, a rope clamping device, a buffer, a safety touch panel, a landing door lock, an elevator safety window, an elevator overload limiting device and a limit switch device.

The weight balancing system mainly comprises a counterweight device, the counterweight device is used for balancing the weight of the car, the moving direction of the counterweight device is opposite to the moving direction of the car, and when the elevator drops, the counterweight device moves upwards.

The counterweight device is designed, and the counterweight guide rail structure of the elevator can brake the counterweight device, realize car braking and inhibit the falling tendency of the car.

Disclosure of Invention

The invention aims to solve the technical problem of providing a counterweight guide rail structure of an elevator, which can realize car braking and inhibit the falling tendency of a car by braking a counterweight device.

In order to solve the problems, the invention adopts the following technical scheme:

a counterweight guide rail structure of a lifting elevator comprises an emergency switch, a counterweight guide rail and a counterweight guide rail, wherein the emergency switch comprises two guide rails which are arranged in parallel left and right, and the guide rails are arranged vertically; the guide rail is C-shaped, and sliding grooves are formed in the inner front end surface and the inner rear end surface of the guide rail and matched with pulleys of the counterweight device; the sliding groove vertically penetrates through the guide rail, an equipment box is arranged outside the guide rail, a frame plate is arranged in the equipment box, a plurality of brake devices are mounted on the frame plate, an upper guide pillar and a lower guide pillar are mounted on the inner end face of the equipment box, the guide pillars penetrate through the frame plate, and nuts are assembled after the guide pillars penetrate through the frame plate; a spring is assembled on the guide post and acts between the frame plate and the nut; a part of the brake device extends to the inner side of the guide rail; a stress block is arranged on the outer side of the frame plate, and the stress block is provided with a conical stress surface; the outer side of the equipment box is connected with a motor through a flange, an output shaft of the motor is inserted into the equipment box, and a driving screw is installed at the output end of the motor; a force acting block is arranged in the equipment box, and the driving screw penetrates through the force acting block and is in threaded connection with the force acting block; the end face of the acting block is in contact with the inner end face of the equipment box, and the acting block is limited at the moment; when the driving screw rod rotates, the acting block moves back and forth; the tail end of the driving screw is screwed into a limiting nut; the acting block acts on the stress surface; when the acting block moves backwards, the force-bearing block bears force, and the frame plate is moved towards the direction of the guide rail; the length of the brake device extending into the guide rail is increased; an L-shaped brake steel plate is arranged on the outer side of the counterweight device; when the brake device extends to the limit position towards the guide rail, the brake device interferes with the brake steel plate; the brake steel plate impacts the brake device when moving upwards; a rib plate is welded at the inner right-angle position of the brake steel plate; an ear plate is welded outside the guide rail, and an expansion bolt is matched between the ear plate and the elevator shaft; the emergency switch is connected with the motor; the emergency switch is provided with two, and one of them is installed in the control room, and another installs in the elevator car.

Preferably, a vertically penetrating lubricating hole is arranged inside the guide rail; the lubricating hole is partially communicated with the sliding groove to form a channel for passing through lubricating grease, and the width of the channel is smaller than the radius of the lubricating hole; when the rolling resistance is reduced, the rolling resistance is increased; solid lubricating grease can be added into the lubricating hole every 6-8 months; local solid lubricating grease is protruded into the sliding groove; so that the groove bottom of the sliding groove is lubricated and the sliding resistance of the pulley is reduced.

Preferably, the brake device comprises a steel sleeve; a limiting plate is welded on the outer wall of the steel sleeve; the limiting plate is limited at the right side of the frame plate; the left end of the steel sleeve penetrates through the frame plate and is matched with a nut; a stop washer is arranged between the nut and the frame plate; the right end of the steel sleeve is provided with a contact block made of rubber; the contact block is sleeved outside the steel sleeve, and an extension rod made of rubber is arranged at the axis of the contact block; the extension rod penetrates through the steel sleeve leftwards; a threaded inner hole is machined in the steel sleeve; a tightening nut is matched with the threaded inner hole; the extension rod penetrates through the tightening nut; the extension rod is provided with a conical stop surface; the tightening nut is screwed inwards to act on the stop surface; the extension rod is extruded and deformed; the extension rod and the tightening nut are in interference fit; when the brake steel plate moves upwards, the brake steel plate contacts the contact block; and after the contact block is elastically deformed, the moving speed of the brake steel plate is reduced. The above structure has the function that when the elevator is dropped or has a fault; when the emergency switch is pressed, the emergency switch drives the motor to rotate, the motor drives the driving screw to rotate, and the frame plate is pushed towards the guide rail; at the moment, the contact block enters the guide rail and occupies a certain space; when the elevator car falls, the counterweight moves upwards; at the moment, the brake steel plate fixed on the outer side of the counterweight device is contacted with the contact block; the contact block is soft, but when the contact block contacts the brake steel plate, the upward speed and potential energy of the counterweight device can be reduced; thereby reducing the dropping speed of the car. Through the multiple contact of the brake steel plate and the contact block, when the contact block cannot be deformed due to the upward potential energy of the counterweight device; i.e. the counterweight is limited. At which time the car sag is stopped.

Preferably, the upper end of the contact block is provided with a V-shaped deformation groove; the V-shaped groove is mainly used for facilitating deformation of the contact block, and when the non-deformation groove is designed, the force required by deformation of the contact block is large. When the brake steel plate is in contact with the contact block at the lowest position, potential energy is reduced at a time, and the speed of the elevator car is reduced at a time. Causing injury to passengers located within the car. For this purpose, we have designed the deformation groove described above. In practical application, the depths of the deformation grooves on each contact block are different, the depths are arranged from shallow to deep, the shallow is positioned above the deformation grooves, and the deep is positioned below the deformation grooves; so that the force required for the deformation of the contact block gradually increases from bottom to top. And the upward force of the counterweight decreases from bottom to top. And thus eventually the counterweight will come to a complete stop.

Preferably, the bottom of the contact block is provided with a contact inclined plane; when the brake steel plate moves upwards, the brake steel plate contacts the contact inclined plane; the contact inclined plane is mainly convenient for the contact block to deform along the situation after being contacted; the contact area between the contact block and the brake steel plate is prevented from being too large.

Preferably, a first rib plate is welded between the lug plate and the guide rail.

Preferably, an inserting sleeve is arranged outside the guide rail, a transverse strut is inserted in the inserting sleeve, a socket is arranged at one end of the transverse strut, which is far away from the inserting sleeve, and the strut is respectively fixed with the inserting sleeve and the socket through screws; a first expansion bolt is matched between the socket and the elevator shaft. The arrangement of the structure is mainly used for increasing the stability of the guide rail.

The invention has the beneficial effects that:

1) when the elevator does not go down, the device is matched with the guide rail of the original counterweight device to form an integral guide rail structure, so that the vertical sliding of the counterweight device is not hindered;

2) when the elevator rapidly drops, a person in the elevator car presses the emergency switch to enable the brake device to move outwards, the brake device occupies the inner side of the guide rail, when the counterweight device moves upwards, the counterweight device is contacted with the brake device, and the elevator car is braked by braking the counterweight device; the elevator is prevented from falling, and the effect of safety protection is achieved;

3) the structure of this device is comparatively simple, and the cost is comparatively cheap, is fit for using widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a schematic view of the guide rail and counterweight arrangement in cooperation;

FIG. 4 is a top view of the guide rail;

FIG. 5 is an internal schematic view of the equipment box;

FIG. 6 is a schematic diagram of the combination of the force-receiving block and the force-acting block;

FIG. 7 is an enlarged view of FIG. 1 at A;

fig. 8 is an enlarged view of fig. 5 at B.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 8, the counterweight guide rail structure of the elevator comprises an emergency switch, which comprises two guide rails 1 arranged in parallel left and right, wherein the guide rails 1 are arranged vertically; the guide rail 1 is C-shaped, sliding grooves 101 are formed in the inner front end face and the inner rear end face of the guide rail 1, and the sliding grooves 101 are matched with pulleys of a counterweight device; the sliding groove 101 vertically penetrates through the guide rail 1, an equipment box 2 is arranged outside the guide rail 1, a frame plate 3 is arranged in the equipment box 2, a plurality of brake devices 4 are arranged on the frame plate 3, an upper guide pillar 201 and a lower guide pillar 201 are arranged on the inner end face of the equipment box 2, the guide pillars 201 penetrate through the frame plate 3, and nuts 202 are assembled on the guide pillars 201 after penetrating through the frame plate 3; a spring 203 is assembled on the guide column 201, and the spring 203 acts between the frame plate 3 and the nut 202; a part of the brake device 4 extends to the inner side of the guide rail 1; a force bearing block 301 is arranged on the outer side of the frame plate 3, and the force bearing block 301 is provided with a conical force bearing surface 302; a motor 5 is connected to the outer side of the equipment box 2 in a flange mode, an output shaft of the motor 5 is inserted into the equipment box 2, and a driving screw 501 is installed at the output end of the motor 5; a force acting block 6 is arranged in the equipment box 2, and the driving screw 501 penetrates through the force acting block 6 and is in threaded connection with the force acting block 6; the end surface of the acting block 6 contacts the inner end surface of the equipment box 2, and at the moment, the acting block 6 is limited; when the driving screw 501 rotates, the acting block 6 moves back and forth; the tail end of the driving screw 501 is screwed into a limiting nut 502; the acting block 6 acts on the force bearing surface 302; when the acting block 6 moves backwards, the force-bearing block 301 bears force, and the frame plate 3 is moved towards the direction of the guide rail 1; the length of the brake device 4 extending into the guide rail 1 is increased; an L-shaped brake steel plate 7 is arranged on the outer side of the counterweight device; when the brake device 4 extends to the limit position towards the guide rail, the brake device interferes with the brake steel plate 7; the brake steel plate 7 impacts the brake device 4 when moving upwards; a rib plate 711 is welded at the inner right-angle position of the brake steel plate 7; an ear plate 8 is welded on the outer part of the guide rail 1, and an expansion bolt 801 is matched between the ear plate 8 and the elevator shaft; the emergency switch is connected with the motor 5; the emergency switch is provided with two, and one of them is installed in the control room, and another installs in the elevator car.

Preferably, a vertically penetrating lubricating hole 121 is arranged inside the guide rail 1; the lubricating hole 121 is partially communicated with the sliding groove 101 to form a channel for passing through lubricating grease, and the width of the channel is smaller than the radius of the lubricating hole 121; when the rolling resistance is reduced, the rolling resistance is increased; solid lubricating grease can be added into the lubricating hole 121 every 6-8 months; the local solid grease protrudes into the chute 101; so that the groove bottom of the sliding groove 101 is lubricated and the sliding resistance of the pulley is reduced.

Preferably, the braking device 4 comprises a steel sleeve 401; a limiting plate 402 is welded on the outer wall of the steel sleeve 401; the limiting plate 402 is limited at the right side of the frame plate 3; the left end of the steel sleeve 401 penetrates through the frame plate 3 and then is matched with a nut 403; a stop washer 411 is arranged between the nut 403 and the frame plate 3; the right end of the steel sleeve 401 is provided with a contact block 404 made of rubber; the contact block 404 is sleeved outside the steel sleeve 401, and an extension rod 405 made of rubber is arranged at the axis of the contact block 404; the extension rod 405 passes through the steel sleeve 401 leftwards; a threaded inner hole 406 is machined in the steel sleeve 401; a tightening nut 407 is fitted through the threaded inner bore 406; the extension rod 405 passes through the tightening nut 407; the extension rod 405 has a tapered stop surface 408; the tightening nut 407 is screwed in and acts on the stop surface 408; at this time, the extension rod 407 is deformed by extrusion; the extension rod 407 and the tightening nut 407 are in interference fit; when the brake steel plate 7 moves upwards, the contact block 404 is contacted; the contact block 404 reduces the moving speed of the brake steel plate 7 after being elastically deformed. The above structure has the function that when the elevator is dropped or has a fault; when the emergency switch is pressed, the emergency switch drives the motor 5 to rotate, the motor 5 drives the driving screw 501 to rotate, and the frame plate 3 is pushed towards the guide rail 1; the contact block 404 now enters the guide rail 1 and encroaches into a certain space; when the elevator car falls, the counterweight moves upwards; at this time, the brake steel plate fixed on the outer side of the counterweight is contacted with the contact block 404; the contact block 404 is soft but when it contacts the brake steel plate 7, it can reduce the upward speed and potential energy of the counterweight; thereby reducing the dropping speed of the car. Through the multiple contact of the brake steel plate and the contact block 404, when the contact block 404 cannot be deformed due to the upward potential energy of the counterweight device; i.e. the counterweight is limited. At which time the car sag is stopped.

Preferably, the upper end of the contact block 404 is provided with a V-shaped deformation groove 441; the V-shaped groove 441 is mainly provided to facilitate deformation of the contact block 404, and when the non-deformation groove 441 is designed, the force required for deformation of the contact block 404 is large. When the brake steel plate contacts the lowest contact block 404, the potential energy is reduced at a time, which causes the speed of the car to be reduced at a time. Causing injury to passengers located within the car. To this end, we have designed the deformation groove 441 described above. In practical application, the depth of the deformation groove 441 on each contact block 404 is different, and the depth is arranged from shallow to deep, shallow is positioned above and deep is positioned below; the bottom-to-top force required to deform the contact block 404 increases. And the upward force of the counterweight decreases from bottom to top. And thus eventually the counterweight will come to a complete stop.

Preferably, the bottom of the contact block 404 is provided with a contact slope 442; when the brake steel plate 7 moves upwards, the brake steel plate contacts the contact inclined plane 442; the contact inclined surface 442 is mainly arranged to facilitate the contact block 404 to deform along with the contact; and the contact area between the contact block 404 and the brake steel plate 7 is prevented from being too large.

Preferably, a first rib 802 is welded between the ear plate 8 and the guide rail 1.

Preferably, an insertion sleeve 121 is arranged outside the guide rail 1, a transverse strut 131 is inserted in the insertion sleeve 121, a socket 141 is arranged at one end of the transverse strut 131 far away from the insertion sleeve 121, and the strut 131 is respectively fixed with the insertion sleeve 121 and the socket 141 through screws; a first expansion bolt 151 is fitted between the receptacle 141 and the elevator shaft. The above structure is provided mainly to increase the stability of the guide rail 1.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a lift elevator's counter weight guide rail structure, includes an emergency switch, its characterized in that: the device comprises two guide rails (1) which are arranged in parallel left and right, wherein the guide rails (1) are arranged vertically; the guide rail (1) is C-shaped, sliding grooves (101) are formed in the inner front end face and the inner rear end face of the guide rail (1), and the sliding grooves (101) are matched with pulleys of a counterweight device; the sliding groove (101) vertically penetrates through the guide rail (1), an equipment box (2) is arranged outside the guide rail (1), a frame plate (3) is arranged in the equipment box (2), a plurality of brake devices (4) are mounted on the frame plate (3), an upper guide post and a lower guide post (201) are mounted on the inner end face of the equipment box (2), the guide posts (201) penetrate through the frame plate (3), and nuts (202) are assembled after the guide posts (201) penetrate through the frame plate (3); a spring (203) is assembled on the guide post (201), and the spring (203) acts between the frame plate (3) and the nut (202); the part of the brake device (4) extends to the inner side of the guide rail (1); a stress block (301) is arranged on the outer side of the frame plate (3), and the stress block (301) is provided with a conical stress surface (302); a motor (5) is connected to the outer side of the equipment box (2) in a flange mode, an output shaft of the motor (5) is inserted into the equipment box (2), and a driving screw rod (501) is installed at the output end of the motor (5); a force acting block (6) is arranged in the equipment box (2), and the driving screw (501) penetrates through the force acting block (6) and is in threaded connection with the force acting block (6); the end face of the acting block (6) is in contact with the inner end face of the equipment box (2), and the acting block (6) is limited at the moment; when the driving screw rod (501) rotates, the acting block (6) moves back and forth; the tail end of the driving screw rod (501) is screwed into a limiting nut (502); the acting block (6) acts on the stress surface (302); when the acting block (6) moves backwards, the force-bearing block (301) bears force, and the frame plate (3) is moved towards the direction of the guide rail (1); the length of the brake device (4) extending into the guide rail (1) is increased; an L-shaped brake steel plate (7) is arranged on the outer side of the counterweight device; when the brake device (4) extends to the limit position towards the guide rail, the brake device interferes with the brake steel plate (7); the brake steel plate (7) impacts the brake device (4) when moving upwards; a rib plate (711) is welded at the inner right-angle position of the brake steel plate (7); an ear plate (8) is welded on the outer part of the guide rail (1), and an expansion bolt (801) is matched between the ear plate (8) and the elevator shaft; the emergency switch is connected with the motor (5); the emergency switch is provided with two, and one of them is installed in the control room, and another installs in the elevator car.

2. The counterweight guide rail structure of a hoisting elevator according to claim 1, characterized in that: a lubricating hole (121) which vertically penetrates through the guide rail (1) is formed in the guide rail; the lubricating hole (121) is partially communicated with the sliding groove (101) to form a channel for passing through lubricating grease, and the width of the channel is smaller than the radius of the lubricating hole (121).

3. The counterweight guide rail structure of a hoisting elevator according to claim 1, characterized in that: the brake device (4) comprises a steel sleeve (401); a limiting plate (402) is welded on the outer wall of the steel sleeve (401); the limiting plate (402) is limited at the right side of the frame plate (3); the left end of the steel sleeve (401) penetrates through the frame plate (3) and then is matched with a nut (403); a stop washer (411) is arranged between the nut (403) and the frame plate (3); the right end of the steel sleeve (401) is provided with a contact block (404) made of rubber; the contact block (404) is sleeved outside the steel sleeve (401), and an extension rod (405) made of rubber is arranged at the axis of the contact block (404); the extension rod (405) passes through the steel sleeve (401) leftwards; a threaded inner hole (406) is machined in the steel sleeve (401); a tightening nut (407) is fitted through the threaded inner bore (406); the extension rod (405) penetrates through the tightening nut (407); the extension rod (405) has a tapered stop surface (408); -the tightening nut (407) is screwed back into action against the stop surface (408); the extension rod (407) is extruded and deformed; the extension rod (407) and the tightening nut (407) are in interference fit; when the brake steel plate (7) moves upwards, the contact block (404) is contacted; and the contact block (404) reduces the moving speed of the brake steel plate (7) after being elastically deformed.

4. The counterweight guide rail structure of a hoisting elevator according to claim 3, characterized in that: the upper end of the contact block (404) is provided with a V-shaped deformation groove (441).

5. The counterweight guide rail structure of a hoisting elevator according to claim 3, characterized in that: the bottom of the contact block (404) is provided with a contact inclined plane (442); when the brake steel plate (7) moves upwards, the brake steel plate contacts the contact inclined surface (442).

6. The counterweight guide rail structure of a hoisting elevator according to claim 1, characterized in that: a first rib plate (802) is welded between the lug plate (8) and the guide rail (1).

7. The counterweight guide rail structure of a hoisting elevator according to claim 1, characterized in that: an inserting sleeve (121) is arranged outside the guide rail (1), a transverse supporting rod (131) is inserted into the inserting sleeve (121), a socket (141) is arranged at one end, away from the inserting sleeve (121), of the transverse supporting rod (131), the supporting rod (131) is fixed with the inserting sleeve (121) and the socket (141) through screws respectively, and a first expansion bolt (151) is matched between the socket (141) and an elevator shaft.