CN117049308A

CN117049308A - Elevator safety tongs and tong seat

Info

Publication number: CN117049308A
Application number: CN202311201926.2A
Authority: CN
Inventors: 赵智红; 赵智勇; 赵紫逸; 赵紫萱; 李国良; 张文娟
Original assignee: Langfang Dongfang National Machinery Co ltd
Current assignee: Langfang Dongfang National Machinery Co ltd
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2023-11-14

Abstract

The application discloses an elevator safety tongs and a tongs seat, wherein the elevator safety tongs are provided with the tongs seat, the tongs seat comprises a tongs seat body, the tongs seat body is made of steel pipes, the tongs seat body is provided with an integrally formed upper wall, a lower wall and two supporting side walls, the thickness of the lower wall is the same as that of the supporting side walls, the thickness of the upper wall is larger than that of the lower wall, therefore, the strength of the tongs seat body can be improved, a reinforcing piece is arranged on the upper wall, the reinforcing piece is a first reinforcing plate fixedly arranged at the top of the upper wall or a second reinforcing plate fixedly arranged at the bottom of the upper wall, the strength of the tongs seat body can be greatly improved, the tongs seat body can meet the use requirement of a large-tonnage elevator, the conditions that the tongs seat is stressed to deform and even break after the operation of the safety tongs is prevented when the elevator is braked, and the safety is improved.

Description

Elevator safety tongs and tong seat

Technical Field

The disclosure relates to the technical field of elevator braking, in particular to an elevator safety tongs and a tongs seat.

Background

Elevator safety gear is one of the safety components in elevator safety protection systems. The safety gear device for elevator is a safety device for emergency stopping and clamping of the car on the guide rail when the elevator speed exceeds the limit speed set by the elevator speed limiter under the operation of the speed limiter or when the suspension rope breaks and slacks. The elevator safety protection device provides an effective protection effect for the safety operation of the elevator, and is generally arranged on a car frame or a counterweight frame according to different ladder types or installation space requirements.

The existing elevator safety tongs seat is formed by roughly machining a car roof connecting plate, a supporting plate, a guide shoe connecting plate and two side plates and then welding, and a welded bracket is required to be subjected to secondary machining, such as fine machining links of correction, milling, drilling and the like, so that the process is complex, welding defects are not eliminated in the welding process during welding, and the risk of fracture of the tongs seat welding position during elevator safety tongs braking exists.

Disclosure of Invention

In view of the above-described drawbacks or shortcomings in the prior art, it is desirable to provide an elevator safety gear and a gear seat.

In a first aspect, the present application provides a jaw set comprising:

the clamp seat body is arranged as a frame body, an accommodating space is formed in the clamp seat body, and the clamp seat body is a steel pipe;

the pliers seat body is provided with an upper wall, a lower wall and two supporting side walls which are integrally formed, the thickness of the lower wall is the same as that of the two supporting side walls, and the thickness of the upper wall is larger than that of the lower wall;

the upper wall is provided with a reinforcing piece, and the reinforcing piece is a first reinforcing plate fixedly arranged at the top of the upper wall or a second reinforcing plate fixedly arranged at the bottom of the upper wall.

According to the technical scheme provided by the embodiment of the application, the upper wall is provided with the first accommodating groove for the elevator guide rail to penetrate, and the lower wall is provided with the second accommodating groove for the elevator guide rail to penetrate.

According to the technical scheme provided by the embodiment of the application, when the reinforcing piece is the first reinforcing plate, the first reinforcing plate is provided with the third accommodating groove for the elevator guide rail to penetrate through; the bottom end surface of the upper wall is symmetrically provided with two first guide parts extending along a second direction, the two first guide parts are respectively positioned at two sides of the first accommodating groove, and the second direction is perpendicular to the first direction.

According to the technical scheme provided by the embodiment of the application, when the reinforcing piece is the second reinforcing plate, a fourth accommodating groove for the elevator guide rail to penetrate is formed in the second reinforcing plate; the second guide parts along the second direction are symmetrically arranged on the bottom end face of the second reinforcing plate, the two second guide parts are respectively positioned on two sides of the third accommodating groove, and the second direction is perpendicular to the first direction.

In a second aspect, the present application provides an elevator safety gear, having a gear holder, comprising:

the two brake wedges are symmetrically arranged in the accommodating space and used for clamping the elevator guide rail to realize elevator braking, and a plurality of anti-skid grooves are formed in the side walls, close to each other, of the two brake wedges;

the lifting assembly is used for driving the brake wedge block to move;

the guide assembly is arranged in the accommodating space and used for guiding and limiting the movement of the brake wedge;

and the spring assembly is abutted against the guide assembly and used for enabling the brake wedge block to clamp the elevator guide rail.

According to the technical scheme provided by the embodiment of the application, the guide assembly comprises two slide block guide pieces which are symmetrically arranged in the accommodating space and respectively positioned on the side walls of the two supporting side walls, wherein the top of the slide block guide piece is provided with a third guide part extending along the second direction;

the guide assembly further comprises two symmetrically arranged sliding blocks, a fourth guide part is arranged at the top of each sliding block and corresponds to the first guide part or the second guide part, a fifth guide part is arranged at the bottom of each sliding block and corresponds to the third guide part, and the cross section area of the bottom of each sliding block is smaller than the cross section area of the top of each sliding block.

According to the technical scheme provided by the embodiment of the application, the two braking wedges are respectively arranged on the side walls of the two sliding blocks, which are close to each other, and a needle roller group is arranged between the braking wedges and the sliding blocks;

the sliding block is provided with a first side wall and a second side wall which are oppositely arranged along a first direction, and sliding rails are arranged on the first side wall and the second side wall and used for limiting movement of the brake wedge.

According to the technical scheme provided by the embodiment of the application, the lifting assembly comprises the lifting rod, the lifting rod is arranged at the top of the clamp seat, the bottom of the lifting rod penetrates through and extends into the accommodating space, the lifting rod is fixedly connected with the connecting plate, two strip-shaped holes are symmetrically formed in the connecting plate in a penetrating mode, and the length direction of the strip-shaped holes is parallel to the second direction.

According to the technical scheme provided by the embodiment of the application, the braking wedge block is provided with the pin hole in a penetrating way, and one end of the pin shaft penetrates through the pin hole and is movably arranged in the strip-shaped hole.

According to the technical scheme provided by the embodiment of the application, the spring assembly comprises an elastic piece, wherein the elastic piece is provided with two end parts on the same side, and the end parts of the elastic piece are positioned between the supporting side wall and the sliding block and are abutted against the sliding block;

the movable hole is formed in the support side wall in a penetrating mode along the second direction, a screw is arranged on one side, away from the sliding block, of the end portion of the elastic piece, and one end, away from the elastic piece, of the screw penetrates through the movable hole to extend to the outside of the support side wall and is locked through the nut.

In summary, the technical scheme specifically discloses an elevator safety tongs and a tongs seat, wherein the tongs seat comprises a tongs seat body, the tongs seat body is provided with an upper wall, a lower wall and two supporting side walls which are integrally formed, and the tongs seat is of a frame structure made of steel pipes; the thickness of the lower wall is the same as that of the supporting side wall, the upper wall is larger than that of the lower wall, and the reinforcing piece is arranged on the upper wall and is a first reinforcing plate fixedly arranged at the top of the upper wall or a second reinforcing plate fixedly arranged at the bottom of the upper wall, so that the strength of the strong seat body is greatly improved, the use of a large-tonnage elevator can be met, the situation that the clamp seat is stressed to be distorted or even broken after the safety clamp acts can be prevented when the elevator brakes, and the safety is improved;

the utility model provides an applied have a pincers seat on elevator safety tongs, elevator safety tongs is including the brake wedge that can press from both sides tight elevator guide rail, can drive the pulling subassembly that the brake wedge removed, can carry out the direction to the action of brake wedge to and can provide the spring assembly who makes the wedge clamp elevator guide rail, from this, after the elevator stall takes place, drive the brake wedge by pulling subassembly and remove, make the brake wedge be close to and press from both sides tight elevator guide rail mutually to realize elevator braking, avoid taking place the accident.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

fig. 1 is a schematic diagram of an elevator safety gear structure.

Fig. 2 is a schematic view of the structure of the clamp base body.

Fig. 3 is a schematic view of the thickening of the upper wall.

Fig. 4 is a schematic view of a reinforcing structure.

Fig. 5 is a schematic view of the detachable connection of the first reinforcing plate and the upper wall.

Fig. 6 is a schematic view of a welded connection of a first reinforcing plate and an upper wall.

Fig. 7 is a schematic view of the detachable connection of the second reinforcing plate and the upper wall.

Fig. 8 is a schematic view of a welded connection of a second reinforcing plate and an upper wall.

Reference numerals in the drawings: 1. a clamp base body; 2. an upper wall; 3. a lower wall; 4. a support sidewall; 5. a first reinforcing part; 6. a second reinforcing part; 7. a first accommodation groove; 8. a second accommodation groove; 9. a first reinforcing plate; 10. a third accommodation groove; 11. a first guide part; 12. a second reinforcing plate; 13. a fourth accommodating groove; 14. a second guide part; 15. a brake wedge; 16. a slider guide; 17. a slide block; 18. a needle roller group; 19. a slide rail; 20. a lifting rod; 21. a connecting plate; 22. a pin shaft; 23. an elastic member; 24. a movable hole; 25. a screw; 26. a first through hole; 27. and a fourth through hole.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

Please refer to the schematic diagram of the structure of the clamp seat body shown in fig. 2, a clamp seat comprises a clamp seat body 1, wherein the clamp seat body 1 is made of steel pipes and is of a frame structure, an accommodating space is formed inside the clamp seat body, the clamp seat body 1 is provided with an integrally formed upper wall 2, a lower wall 3 and two supporting side walls 4, a first accommodating groove 7 for an elevator guide rail to pass through is formed in the upper wall 2, and a second accommodating groove 8 for the elevator guide rail to pass through is formed in the lower wall 3.

As shown in fig. 3, the thickness of the lower wall 3 is the same as that of the two supporting side walls 4, and the thickness of the upper wall 2 is greater than that of the lower wall 3, so that the strength of the jaw base body 1 can be enhanced, and the jaw base body 1 can be prevented from being deformed or broken due to stress when in use.

As shown in fig. 5 and 6, the upper wall 2 is provided with a reinforcement member, wherein the reinforcement member is a first reinforcement plate 9, the first reinforcement plate 9 is arranged on the top of the upper wall 2, alternatively, the first reinforcement plate 9 is detachably arranged on the top of the upper wall 2 or welded on the top of the upper wall 2, and the first reinforcement plate 9 and the upper wall 2 are matched to enhance the strength of the clamp seat body 1; the first reinforcing plate 9 is provided with a third accommodating groove 10 for the elevator guide rail to pass through, the specifications of the third accommodating groove 10 and the first accommodating groove 7 are the same, the bottom end surface of the upper wall 2 is symmetrically provided with two first guide parts 11 extending along a second direction, the two first guide parts 11 are respectively positioned at two sides of the first accommodating groove 7, and the second direction is the arrow indication direction in fig. 2;

optionally, as shown in fig. 7 and 8, the reinforcement member is a second reinforcement plate 12, the second reinforcement plate 12 is disposed at the bottom of the upper wall 2, optionally, the second reinforcement plate 12 is detachably disposed at the top of the upper wall 2, or welded at the top of the upper wall 2, and the second reinforcement plate 12 and the upper wall 2 cooperate to enhance the strength of the jaw seat body 1; the second reinforcing plate 12 is provided with a fourth accommodating groove 13 for the elevator guide rail to pass through, the fourth accommodating groove 13 and the first accommodating groove 7 are identical in specification, and two second guide parts 14 extending along the second direction are symmetrically arranged on the bottom end surface of the second reinforcing plate 12, and the two second guide parts 14 are respectively positioned on two sides of the third accommodating groove 10.

When the reinforcement is the first reinforcement plate 9, the bottom end surface of the upper wall 2 is symmetrically provided with two first guide parts 11 extending along the second direction, and the two first guide parts 11 are respectively positioned at two sides of the first accommodating groove 7; when the reinforcing member is the second reinforcing plate 12, two second guiding portions 14 along the second direction are symmetrically arranged on the bottom end surface of the second reinforcing plate 12, and the two second guiding portions 14 are respectively located at two sides of the third accommodating groove 10.

The first guide portion 11 or the second guide portion 14 may be alternatively provided or detachably, and may be a groove or a protrusion, and the cross-sectional shape thereof may be rectangular, semicircular, any polygonal, or the like.

Example two

As shown in fig. 4, the clamp seat body 1 is provided with a reinforcing structure, the reinforcing structure comprises a first reinforcing part 5 and a second reinforcing part 6, the upper wall 2 extends out of the first reinforcing part 5 along a first direction, the two supporting side walls 4 extend out of the second reinforcing part 6 along the first direction, and the first reinforcing part 5 and the second reinforcing part 6 are integrally formed; the strength of the clamp seat body 1 is improved by arranging the reinforcing structure, so that the clamp seat body 1 can be prevented from deforming or breaking when in use; the first direction is the direction indicated by the arrow in fig. 4, and the first direction is perpendicular to the second direction.

It should be noted that, the design of thickening the upper wall 2, the arrangement of the reinforcing structure, and the arrangement of the reinforcing member mentioned in the first embodiment and the second embodiment can enhance the strength of the jaw seat body 1, so that the jaw seat body 1 will not be deformed or broken by force during use; and the thickening design, the reinforced structure and the reinforcing piece can be selected respectively, and can be used in combination at will, through the thickening design of the upper wall 2, the reinforced structure is arranged, and the reinforcing piece is arranged, so that the strength of the clamp seat body 1 is improved greatly, the use of a large-tonnage elevator can be met, and the clamp seat is prevented from being distorted and deformed or even broken after being stressed when the elevator safety tongs act.

Example III

As shown in fig. 1, an elevator safety gear, to which a clamp seat according to the first embodiment is applied, includes two brake wedges 15, the two brake wedges 15 are symmetrically disposed in a receiving space and can clamp an elevator guide rail, and a plurality of anti-slip grooves are disposed on sidewalls of the two brake wedges 15, which are close to each other, for increasing friction with the elevator guide rail.

The elevator brake system further comprises a lifting assembly capable of driving the brake wedge 15 to move, a guide assembly capable of guiding and limiting the brake wedge 15, and a spring assembly capable of providing force for clamping the elevator guide rail by the brake wedge 15;

when the reinforcement is the first reinforcement plate 9, the lifting rod 20 is arranged at the top of the first reinforcement plate 9, a first through hole 26 is formed in the first reinforcement plate 9 in a penetrating manner, a second through hole is formed in the upper wall 2 in a penetrating manner corresponding to the first through hole 26, and the bottom end of the lifting rod 20 sequentially penetrates through the first through hole 26 and the second through hole and extends into the accommodating space;

when the reinforcing piece is the second reinforcing plate 12, a third through hole is penetrated and formed in the second reinforcing plate 12, a fourth through hole 27 is penetrated and formed in the upper wall 2 corresponding to the third through hole, and the bottom end of the lifting rod 20 penetrates through the fourth through hole 27 and the third through hole in sequence and extends into the accommodating space;

the bottom end of the lifting rod 20 is fixedly connected with a connecting plate 21, two strip-shaped holes along the second direction are symmetrically formed in the connecting plate 21 in a penetrating manner, a pin hole is formed in the brake wedge 15 in a penetrating manner, and one end of a pin shaft 22 penetrates the pin hole and is movably arranged in the strip-shaped hole; thus, when the elevator is in braking action, the speed limiter starts to work, and the traction force generated by the speed limiter drives the lifting rod 20 to move upwards, and the connecting plate and the pin 22 drive the two braking wedges 15 to move upwards.

The guide assembly comprises two symmetrically arranged slide block guide pieces 16, wherein the two slide block guide pieces 16 are respectively arranged on the side walls of the two supporting side walls 4, which are close to each other, alternatively, the slide block guide pieces 16 and the supporting side walls 4 are detachably connected or welded, the top of the slide block guide pieces 16 are provided with third guide parts extending along the second direction, the third guide parts can be grooves or bulges, and the cross section of the third guide parts can be rectangular, semicircular, any polygonal and the like.

The guide assembly further comprises two sliding blocks 17 symmetrically arranged in the accommodating space, the top of each sliding block 17 is provided with a fourth guide part corresponding to the first guide part 11 or the second guide part 14, the bottom of each sliding block 17 is provided with a fifth guide part corresponding to the third guide part, the fourth guide part is in sliding connection with the first guide part 11 or the second guide part 14, the fifth guide part is in sliding connection with the third guide part, the fourth guide part and the fifth guide part can be arranged as grooves or bulges, and the cross section of each fourth guide part and each fifth guide part can be arranged as a rectangle, a semicircle, any polygon and the like; the cross section area of the bottom end surface of the sliding block 17 is smaller than that of the top end surface of the sliding block, and guide surfaces are arranged on two opposite side walls of the two sliding blocks 17;

the two brake wedges 15 are respectively arranged on the two guide surfaces in a sliding way, and a needle roller group 18 is arranged between the brake wedges 15 and the guide surfaces, and the needle roller group 18 can reduce the friction force between the brake wedges 15 and the guide surfaces when moving;

the slide block 17 has a first side wall and a second side wall which are oppositely arranged along a first direction, and slide rails 19 are arranged on the first side wall and the second side wall, and optionally, the slide rails 19 are detachably arranged, and the slide rails 19 can limit the movement of the brake wedge 15 and prevent the brake wedge 15 from being separated from the guide surface.

The spring assembly comprises an elastic piece 23, wherein the elastic piece 23 can be a U-shaped spring which is provided with two ends on the same side, and the ends of the elastic piece 23 are positioned between the supporting side wall 4 and the sliding block 17 and are abutted against the sliding block 17;

the support side wall 4 is provided with a movable hole 24 in a penetrating mode, one side, far away from the sliding block 17, of the end portion of the elastic piece 23 is provided with a screw rod 25, and one end, far away from the elastic piece 23, of the screw rod 25 penetrates the movable hole 24 to extend to the outside of the support side wall 4 and is locked through a nut.

Working principle: when the elevator runs at the rated speed, the safety gear is in a normal working state, when the elevator runs at the rated speed, the speed limiter starts to work, the traction force generated by the traction force drives the brake wedges 15 to move upwards along the guide surfaces of the sliding blocks 17 through the roller pin groups 18, the elevator guide rail is positioned between the two brake wedges 15, so that the gap between the two brake wedges 15 is continuously reduced in the upward moving process of the brake wedges 15 and gradually approaches the elevator guide rail, the fourth guide part at the top of the sliding blocks 17 is in sliding connection with the first guide part 11 or the second guide part 14, the fifth guide part at the bottom of the sliding blocks 17 is in sliding connection, the two sliding blocks 17 are pushed away along with the continuous upward movement of the brake wedges 15, the two brake wedges 15 move towards two sides at the same time, and finally the spring assemblies clung to the sliding blocks 17 are propped up, the two ends of the elastic pieces 23 have inward clamping force, and the brake wedges 15 can clamp the elevator guide rail under the action of the elastic force generated by the elastic deformation of the elastic pieces 23, so that the overspeed elevator can be stopped on the elevator guide rail, and finally the overspeed elevator is kept at a static state.

Because the brake wedge 15 is matched with the connecting plate 21 through the pin shaft 22, the pin shaft 8 is movably arranged in the strip-shaped hole of the connecting plate 21, so that the brake wedge 15 can move in opposite directions in the upward movement process;

when the elevator safety tongs are assembled, all parts on the elevator safety tongs are required to be adjusted to be matched with an elevator guide rail, the positions of the end parts of the elastic pieces 23 are changed by adjusting the positions of nuts on the screw rods 25 of the spring assemblies, so that the positions of the sliding blocks 17 and the braking wedges 15 are adjusted, the distances from the two braking wedges 15 to the elevator guide rail are the same, the situation that the braking performance is influenced by overlarge gaps between the braking wedges 15 and the elevator guide rail is avoided, and in the process of clamping the elevator guide rail, the two braking wedges 15 can simultaneously abut against the elevator guide rail to lock the elevator guide rail, so that the braking is realized.

The clamp seat body 1 can be assembled and produced in any mode in the embodiment, can be assembled with all parts on the safety clamp, is made of steel pipes, has high bending and torsion resistance, is simple in process, shortens production and assembly debugging time, improves production efficiency, and reduces manufacturing cost.

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims

1. A jaw set, comprising:

the clamp seat comprises a clamp seat body (1), wherein the clamp seat body (1) is arranged as a frame body, an accommodating space is formed in the clamp seat body, and the clamp seat body (1) is a steel pipe;

the pliers seat body (1) is provided with an upper wall (2), a lower wall (3) and two supporting side walls (4) which are integrally formed, the thickness of the lower wall (3) is the same as that of the two supporting side walls (4), and the thickness of the upper wall (2) is larger than that of the lower wall (3);

the upper wall (2) is provided with a reinforcing piece, and the reinforcing piece is a first reinforcing plate (9) fixedly arranged at the top of the upper wall (2) or a second reinforcing plate (12) fixedly arranged at the bottom of the upper wall (2).

2. A jaw as claimed in claim 1, characterized in that said upper wall (2) is provided with a first receiving groove (7) for the passage of the elevator guide rail, and said lower wall (3) is provided with a second receiving groove (8) for the passage of the elevator guide rail.

3. The clamp seat according to claim 2, characterized in that when the reinforcement is a first reinforcement plate (9), a third accommodating groove (10) for the elevator guide rail to penetrate is formed in the first reinforcement plate (9); the bottom end surface of the upper wall (2) is symmetrically provided with two first guide parts (11) extending along a second direction, the two first guide parts (11) are respectively positioned at two sides of the first accommodating groove (7), and the second direction is perpendicular to the first direction.

4. A jaw as claimed in claim 2, characterized in that, when the reinforcement is a second reinforcement plate (12), the second reinforcement plate (12) is provided with a fourth receiving groove (13) for the passage of the elevator guide rail; two second guide parts (14) along a second direction are symmetrically arranged on the bottom end surface of the second reinforcing plate (12), the two second guide parts (14) are respectively positioned on two sides of the third accommodating groove (10), and the second direction is perpendicular to the first direction.

5. Elevator safety gear, to which a gear holder according to any one of claims 1-4 is applied, characterized in that it comprises:

the two brake wedges (15) are symmetrically arranged in the accommodating space and used for clamping the elevator guide rail to realize elevator braking, and a plurality of anti-skid grooves are formed in the side walls, close to the two brake wedges (15);

the lifting assembly is used for driving the brake wedge block (15) to move;

the guide assembly is arranged in the accommodating space and used for guiding and limiting the movement of the brake wedge block (15);

and the spring assembly is abutted against the guide assembly and is used for enabling the brake wedge block (15) to clamp the elevator guide rail.

6. Elevator safety gear according to claim 5, characterized in that the guide assembly comprises two slide guides (16), the two slide guides (16) being symmetrically arranged in the receiving space and being located on the side walls of the two supporting side walls (4) that are close to each other, respectively, the top of the slide guides (16) being provided with a third guide extending in the second direction;

the guide assembly further comprises two symmetrically arranged sliding blocks (17), a fourth guide part is arranged at the top of each sliding block (17) corresponding to the first guide part (11) or the second guide part (14), a fifth guide part is arranged at the bottom of each sliding block (17) corresponding to the third guide part, and the cross section area of the bottom of each sliding block (17) is smaller than that of the top.

7. Elevator safety gear according to claim 6, characterized in that two braking wedges (15) are slidably arranged on the side walls of the two sliding blocks (17) that are adjacent to each other, and that a needle group (18) is arranged between the braking wedges (15) and the sliding blocks (17);

the sliding block (17) is provided with a first side wall and a second side wall which are oppositely arranged along a first direction, and sliding rails (19) are arranged on the first side wall and the second side wall and are used for limiting movement of the brake wedge block (15).

8. The elevator safety gear according to claim 6, wherein the lifting assembly comprises a lifting rod (20), the lifting rod (20) is arranged at the top of the gear seat, the bottom of the lifting rod (20) extends into the accommodating space in a penetrating mode, the lifting rod is fixedly connected with a connecting plate (21), two strip-shaped holes are symmetrically formed in the connecting plate (21) in a penetrating mode, and the length direction of the strip-shaped holes is parallel to the second direction.

9. An elevator safety gear according to claim 7, characterized in that the brake wedge (15) is provided with a pin hole therethrough, and one end of the pin shaft (22) is provided in the bar-shaped hole so as to extend through the pin hole.

10. Elevator safety gear according to claim 7, characterized in that the spring assembly comprises an elastic member (23), the elastic member (23) having two ends on the same side, and the ends of the elastic member (23) being located between the supporting side wall (4) and the slider (17) and abutting the slider (17);

the support side wall (4) is provided with a movable hole (24) in a penetrating mode along the second direction, one side, far away from the sliding block (17), of the end portion of the elastic piece (23) is provided with a screw rod (25), and one end, far away from the elastic piece (23), of the screw rod (25) penetrates through the movable hole (24) to extend to the outside of the support side wall (4) and is locked through a nut.