Elevator safety tongs and using method thereof

Abstract

The invention discloses elevator safety tongs and a using method thereof, and relates to the field of elevator safety tongs, the elevator safety tongs comprise a safety tongs body, a built-in wedge-shaped piece and a movable locking piece, the built-in wedge-shaped piece is installed on the inner side of the safety tongs body, and the movable locking piece adjusted through a reserved speed limiter and a reserved driving structure is installed at the inner end of the safety tongs body; a reset spring is fixedly connected to the outer side of the lower-layer positioning piece and is in butt joint with the inner side of the safety tongs body, and a guide reserved roller is rotationally connected to the outer side of the lower-layer positioning piece. According to the elevator safety tongs and the using method thereof, the auxiliary movable structure is arranged, and when the speed of an elevator exceeds the limiting speed set by an elevator speed limiter or under the condition that a suspension rope is broken and loosened, a reserved driving structure in the safety tongs body is driven to drive the movable locking piece to ascend; therefore, the movable locking piece positions and clamps the contacted suspension rope, and the lift car is stopped emergently and clamped on the guide rail.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator safety clamps, in particular to an elevator safety clamp and a use method thereof. Background Art

[0002] As the basic safety equipment of elevators, the quality of elevator safety clamps determines the safety quality of the entire elevator. Therefore, there are strict quality inspection requirements for the production of elevator safety clamps. For example, the patent with publication number CN109592534B discloses an elevator safety clamp, in which both sides of the elevator move vertically along the guide rails. The safety clamp includes friction plates arranged on both sides of each guide rail, wedge-shaped push blocks fixedly connected to the back of each friction plate, push rods for pushing the push blocks, and a power unit for driving the push rods to move. When braking is required, the power unit pushes the push blocks to move toward each other through the push rods, so that the friction plates tightly hold the guide rails to complete the braking. Compared with the prior art, the structure is simple, and the friction plates tightly hold the guide rails through the wedge-shaped push blocks, so that the braking effect is good; and the selected power unit is powerful and has a low cost; For example, the patent with publication number CN118529574A discloses an elevator safety clamp, which includes a safety clamp seat, a movable clamp block and a static clamp block; the safety clamp seat includes a clamp seat bracket, a left clamp seat and a right clamp seat, the clamp seat bracket includes a semi-enclosed cavity, the left clamp seat and the right clamp seat are installed in the clamp seat bracket and are respectively arranged on both sides of the clamp seat bracket; the left clamp seat and the clamp seat bracket are slidably connected along the left and right directions, a disc spring is arranged between the side walls of the left clamp seat and the safety clamp seat, the static clamp block is slidably connected to the left clamp seat, the static clamp block and the left clamp seat are wedge-shaped, and a compression spring is arranged at the bottom end of the static clamp block on the clamp seat bracket; the movable clamp block is slidably connected to the right clamp seat, and the movable clamp block and the right clamp seat are wedge-shaped. The function of the safety clamp's progressive braking is realized, ensuring the stability and safety of the elevator car braking; For example, the patented elevator safety clamp with publication number CN108584610A belongs to the field of elevator technology. The elevator safety clamp includes a safety clamp seat, an operating rod, a main clamp block, a secondary clamp block, and a guide ball; two secondary clamp blocks are symmetrically arranged in the safety clamp seat, so that the two sides of the elevator guide rail passing through the safety clamp seat are respectively in contact with the two secondary clamp blocks; two main clamp blocks are symmetrically arranged on both sides of the safety clamp seat; guide balls are arranged between the main clamp block and the secondary clamp block, and the side of the main clamp block facing the secondary clamp block is a main inclined surface, and the side of the secondary clamp block facing the main clamp block is a secondary inclined surface, and the main inclined surface is arranged parallel to the secondary inclined surface; the side of the secondary clamp block facing the elevator guide rail is a vertical plane parallel to the guide rail. It can ensure that the gap on both sides of the safety clamp is uniform, and the car can be effectively docked on the guide rail when in action, which reduces the elevator failure rate and improves the safety of elevator operation; Most of the above-mentioned prior arts have improved their overall structure, and the existing ladder safety clamp has a fixed locking positioning surface during operation. When it is exposed to a large impact, its locking range is fixed and the locking area cannot be adaptively adjusted to further ensure its locking safety quality, thereby having certain usage limitations. Summary of the invention

[0003] The object of the present invention is to provide an elevator safety clamp and a method of using the same, so as to solve the problem proposed in the above background technology that during operation, the locking positioning surface is fixed, and when it is exposed to a large impact, its locking range is fixed and the locking area cannot be adaptively adjusted, thereby further ensuring the locking safety quality.

[0004] To achieve the above object, the present invention provides the following technical solutions: an elevator safety clamp and a method of using the same, comprising a safety clamp body, a built-in wedge and a movable locking piece, wherein the inner side of the safety clamp body is provided with a built-in wedge, and the inner end of the safety clamp body is provided with a movable locking piece adjusted by a reserved speed limiter and a reserved driving structure; The lower end of the safety clamp body is nested and docked with a lower positioning piece, and a return spring is fixedly connected to the outer side of the lower positioning piece, and the return spring is docked with the inner side of the safety clamp body, the outer side of the lower positioning piece is rotatably connected with a guide reserved roller, the upper end of the lower positioning piece is docked with a second reserved steel wire rope, and the second reserved steel wire rope passes through the interior of the safety clamp body, and the end of the second reserved steel wire rope is docked with the lower end of the movable locking piece, an auxiliary movable structure is provided on the inner side of the movable locking piece, and the positioning range of the outer side of the movable locking piece is adaptively adjusted by the auxiliary movable structure; an auxiliary secondary positioning structure is provided between the safety clamp body and the inner side of the built-in wedge-shaped piece, and the upper positioning state of the safety clamp body is adaptively adjusted by the auxiliary secondary positioning structure.

[0005] Furthermore, the auxiliary movable structure is provided with a reserved accommodating cavity, the inner side of the movable locking piece is provided with the reserved accommodating cavity, and a movable floating block docking piece is nested and installed on the inner side of the reserved accommodating cavity, and the lower end of the movable floating block docking piece is docked with a first reserved steel wire rope, the first reserved steel wire rope passes through the inner side of the movable locking piece, and the end of the first reserved steel wire rope is docked with the lower end of the movable floating block docking piece.

[0006] Furthermore, the outer side of the movable locking part is bonded to an outer friction docking liquid bag part, and the inner side of the outer friction docking liquid bag part is docked with a supply channel, and the supply channel is connected to the inner side of the reserved cavity, and the upper end of the reserved cavity is provided with a supply channel for liquid supply.

[0007] Furthermore, when the movable locking member moves upward along the inclined surface of the built-in wedge-shaped member through a preset driving device, the first reserved steel wire rope whose end is relatively fixed to the docking end will drive the movable floating block docking member to apply pressure downward along the inner side of the reserved cavity.

[0008] Furthermore, when the movable floating block docking piece is forced to move downward and exert pressure on the inner side of the reserved accommodating cavity, the liquid is supplied to the inner part of the outer friction docking liquid bag piece through the supply channel.

[0009] Furthermore, the auxiliary secondary positioning structure is provided with a vertical guide groove, and the vertical guide groove is opened on the inner side of the built-in wedge-shaped member, and an abutment member is nested and installed on the inner side of the vertical guide groove, and the upper end positions of the abutment member and the movable locking member correspond to each other.

[0010] Furthermore, an upper positioning piece is nested and installed on the inner side of the upper end of the safety clamp body, and a guide reserved roller is rotatably connected to the outer side of the upper positioning piece, and a third reserved steel wire rope is docked at the lower end of the upper positioning piece, and the third reserved steel wire rope passes through the inner side of the built-in wedge-shaped piece, and the end of the third reserved steel wire rope is docked with the lower end of the abutting docking piece.

[0011] Furthermore, the movable locking member applies pressure to the contacting abutting member during the upward movement, and the upper positioning member is driven by the third reserved steel wire rope to form a traction structure during the pressure on the abutting member.

[0012] Furthermore, during the upward movement of the movable locking member, the second reserved steel wire rope drives the lower positioning member to form an elastic sliding structure along the lower end of the safety clamp body through the reset spring, and the lower positioning member and the upper positioning member are arranged alternately.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The elevator safety clamp and the use method thereof are provided with an auxiliary movable structure. When the elevator speed exceeds the limit speed set by the elevator speed limiter, or when the suspension rope is broken or loosened, the reserved driving structure in the safety clamp body is driven to drive the movable locking member to rise, so that the movable locking member positions and clamps the contacted suspension rope, so that the car is urgently stopped and clamped on the guide rail. Furthermore, when the movable locking member moves upward along the inclined surface of the built-in wedge-shaped member through the preset driving structure, the first reserved steel wire rope whose end is relatively fixed and docked with it will drive the movable floating block docking member to apply pressure downward along the inner side of the reserved accommodating cavity, thereby squeezing the liquid stored inside the reserved accommodating cavity outward, so that it is supplied and expanded to the inner side of the outer friction docking liquid bag member outside the movable locking member through the supply channel, thereby increasing the contact area and contact friction force of the movable locking member on the outer side of the hanging rope in contact, and during the larger impact process of the contact, the locking range is expanded, and the locking area is adjusted adaptively, thereby further ensuring the locking safety quality; Furthermore, an auxiliary secondary positioning structure is provided, through which the upper positioning state of the safety clamp body can be adaptively adjusted, and the upper positioning member is driven to move to the left by the third reserved steel wire rope during the upward movement of the movable locking member and the process in which the contacting mating member is pressed, thereby locking and jamming the contacting rope; Furthermore, when the movable locking part moves upward, it will drive the lower positioning part through the second reserved steel wire rope to slide to the right along the lower end of the safety clamp body, thereby cooperating with the upper positioning part moving to the left, so that the lower positioning part and the upper positioning part can alternately lock the contacting ropes in left and right directions, further improving its safety locking quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the safety gear body of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure; Figure 4 This is a schematic diagram of the three-dimensional structure of the built-in wedge-shaped member of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the guide reserved roller of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the outer friction docking liquid bag component of the present invention; Figure 7 This is a schematic diagram of a half-cut three-dimensional structure of a lower positioning member of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the upper positioning member of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the movable locking member of the present invention.

[0015] In the figure: 1. Safety clamp body; 2. Built-in wedge-shaped member; 3. Movable locking member; 4. Accommodating reserved cavity; 5. Movable floating block docking member; 6. Supply channel; 7. Outer friction docking liquid bag member; 8. First reserved steel wire rope; 9. Second reserved steel wire rope; 10. Lower layer positioning member; 11. Guide reserved roller; 12. Reset spring; 13. Resistance docking member; 14. Third reserved steel wire rope; 15. Upper layer positioning member; 16. Vertical guide groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1-9 The present invention provides the following technical solutions: an elevator safety clamp and a method of using the same, comprising a safety clamp body 1, a built-in wedge-shaped member 2, a movable locking member 3, a reserved accommodating cavity 4, a movable floating block docking member 5, a supply channel 6, an outer friction docking liquid bag member 7, a first reserved steel wire rope 8, a second reserved steel wire rope 9, a lower layer positioning member 10, a guide reserved roller 11, a return spring 12, a contact docking member 13, a third reserved steel wire rope 14, an upper layer positioning member 15, and a vertical guide groove 16; A safety clamp body 1, a built-in wedge 2 and a movable locking member 3, wherein the built-in wedge 2 is installed on the inner side of the safety clamp body 1, and the inner end of the safety clamp body 1 is installed with the movable locking member 3 adjusted by the reserved speed limiter and the reserved driving structure; the lower end of the safety clamp body 1 is nested and docked with a lower positioning member 10, and the outer side of the lower positioning member 10 is fixedly connected with a reset spring 12, and the reset spring 12 and the inner side of the safety clamp body 1 are docked with each other, the outer side of the lower positioning member 10 is rotatably connected with a guide reserved roller 11, the upper end of the lower positioning member 10 is docked with a second reserved steel wire rope 9, and the second reserved steel wire rope 9 runs through the interior of the safety clamp body 1, and at the same time, the end of the second reserved steel wire rope 9 is docked with the lower end of the movable locking member 3, and an auxiliary movable structure is provided on the inner side of the movable locking member 3, and the positioning range of the outer side of the movable locking member 3 is adaptively adjusted through the auxiliary movable structure; The auxiliary movable structure is provided with a reserved accommodation cavity 4, the inner side of the movable locking member 3 is provided with the reserved accommodation cavity 4, and the inner side of the reserved accommodation cavity 4 is nested with a movable floating block docking member 5, and the lower end of the movable floating block docking member 5 is docked with a first reserved steel wire rope 8, the first reserved steel wire rope 8 runs along the inner side of the movable locking member 3, and the end of the first reserved steel wire rope 8 is docked with the lower end of the movable floating block docking member 5. The outer side of the movable locking member 3 is bonded with an outer layer friction docking liquid bag member 7, and the inner side of the outer layer friction docking liquid bag member 7 is docked with a supply channel 6, and the supply channel 6 is connected to the inner side of the reserved accommodation cavity 4, and the upper end of the reserved accommodation cavity 4 is provided with a supply channel 6 for liquid supply. When the movable locking member 3 moves upward along the inclined surface of the built-in wedge-shaped member 2 through the preset driving device, the first reserved steel wire rope 8 whose end is relatively fixed to the docking member 3 will drive the movable floating block docking member 5 to apply pressure downward along the inner side of the reserved accommodating cavity 4.

[0018] When the movable floating block docking member 5 is forced to move downward and exert pressure on the inner side of the reserved accommodating cavity 4, the liquid is supplied to the inner side of the outer friction docking liquid bag member 7 through the supply channel 6. When the elevator speed exceeds the limit speed set by the elevator speed limiter, or when the suspension rope breaks and relaxes, the reserved driving structure in the driving safety clamp body 1 drives the movable locking member 3 to rise, so that the movable locking member 3 can position and clamp the contacting suspension rope, so that the car can be urgently stopped and clamped on the guide rail. When the movable locking member 3 moves upward along the inclined surface of the built-in wedge-shaped member 2 through the preset driving structure, the docking with it The first reserved steel wire rope 8 whose end is relatively stationary will drive the movable floating block docking piece 5 to apply pressure downward along the inner side of the reserved cavity 4, thereby squeezing the liquid stored inside the reserved cavity 4 outward, so that it is supplied and expanded through the supply channel 6 to the inner side of the outer friction docking liquid bag piece 7 outside the movable locking piece 3, thereby allowing the movable locking piece 3 to increase the contact area and contact friction force with the outer side of the suspension rope. During a larger contact impact, the locking range is expanded and the locking area is adaptively adjusted, thereby further ensuring the locking safety quality.

[0019] Embodiment 2: Based on Embodiment 1, an auxiliary secondary positioning structure is also disclosed, and its specific structure is as follows: An auxiliary secondary positioning structure is provided between the safety clamp body 1 and the inner side of the built-in wedge-shaped member 2, and the upper positioning state of the safety clamp body 1 is adaptively adjusted through the auxiliary secondary positioning structure.

[0020] The auxiliary secondary positioning structure is provided with a vertical guide groove 16, and the vertical guide groove 16 is opened on the inner side of the built-in wedge-shaped member 2, and the inner side of the vertical guide groove 16 is nested with a resistance docking member 13, and the upper end positions of the resistance docking member 13 and the movable locking member 3 correspond to each other. An upper positioning member 15 is nested on the inner side of the upper end of the safety clamp body 1, and the outer side of the upper positioning member 15 is rotatably connected with a guide reserved roller 11, and the lower end of the upper positioning member 15 is docked with a third reserved steel wire rope 14, and the third reserved steel wire rope 14 passes through the inner side of the built-in wedge-shaped member 2, and the end of the third reserved steel wire rope 14 is docked with the lower end of the resistance docking member 13. In the process of the movable locking member 3 moving upward, the contacting resistance docking member 13 is pressed, and in the process of the resistance docking member 13 being pressed, the upper positioning member 15 is driven by the third reserved steel wire rope 14 to form a traction structure; During the upward movement of the movable locking member 3, the second reserved steel wire rope 9 drives the lower positioning member 10 to form an elastic sliding structure along the lower end of the safety clamp body 1 through the return spring 12, and the lower positioning member 10 is staggered with the upper positioning member 15; the upper positioning state of the safety clamp body 1 can be adaptively adjusted through the auxiliary secondary positioning structure, and the upper positioning member 13 is contacted during the upward movement of the movable locking member 3, and the upper positioning member 15 is driven to move to the left by the third reserved steel wire rope 14 during the pressure of the contacting butt joint 13, so as to lock and jam the contacting rope; while the movable locking member 3 moves upward, the lower positioning member 10 is driven by the second reserved steel wire rope 9 to slide out to the right along the lower end of the safety clamp body 1, so as to cooperate with the upper positioning member 15 moving to the left, so that the lower positioning member 10 and the upper positioning member 15 are staggered to lock the contacting rope in the left and right directions, further improving its safety locking quality.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator safety clamp and a method of using the same, comprising a safety clamp body (1), a built-in wedge-shaped piece (2) and a movable locking piece (3), wherein the built-in wedge-shaped piece (2) is installed on the inner side of the safety clamp body (1), and the movable locking piece (3) adjusted by a reserved speed limiter and a reserved driving structure is installed on the inner end of the safety clamp body (1); Features: The lower end of the safety clamp body (1) is nested and docked with a lower positioning piece (10), and the outer side of the lower positioning piece (10) is fixedly connected with a return spring (12), and the return spring (12) and the inner side of the safety clamp body (1) are docked with each other, the outer side of the lower positioning piece (10) is rotatably connected with a guide reserved roller (11), the upper end of the lower positioning piece (10) is docked with a second reserved steel wire rope (9), and the second reserved steel wire rope (9) runs through the interior of the safety clamp body (1), and the end of the second reserved steel wire rope (9) is docked with the lower end of the movable locking piece (3), and an auxiliary movable structure is provided on the inner side of the movable locking piece (3), and the positioning range of the outer side of the movable locking piece (3) is adaptively adjusted by the auxiliary movable structure; An auxiliary secondary positioning structure is provided between the safety clamp body (1) and the inner side of the built-in wedge-shaped piece (2), and the upper positioning state of the safety clamp body (1) is adaptively adjusted through the auxiliary secondary positioning structure.

2. An elevator safety clamp and a method of using the same according to claim 1, characterized in that: The auxiliary movable structure is provided with a reserved accommodation cavity (4), the inner side of the movable locking member (3) is provided with the reserved accommodation cavity (4), and a movable floating block docking member (5) is nested and installed inside the reserved accommodation cavity (4), and the lower end of the movable floating block docking member (5) is docked with a first reserved steel wire rope (8), the first reserved steel wire rope (8) passes through the inner side of the movable locking member (3), and the end of the first reserved steel wire rope (8) is docked with the lower end of the movable floating block docking member (5).

3. An elevator safety clamp and a method of using the same according to claim 2, characterized in that: The outer side of the movable locking member (3) is bonded to an outer friction docking liquid bag member (7), and the inner side of the outer friction docking liquid bag member (7) is docked with a supply channel (6), and the supply channel (6) is connected to the inner side of the reserved accommodating cavity (4), and the upper end of the reserved accommodating cavity (4) is provided with a supply channel for supplying liquid.

4. An elevator safety clamp and a method of using the same according to claim 3, characterized in that: When the movable locking member (3) moves upward along the inclined surface of the built-in wedge-shaped member (2) by means of a preset driving device, the first reserved steel wire rope (8) whose end is relatively fixed to the movable locking member (3) will drive the movable floating block docking member (5) to apply pressure downward along the inner side of the reserved accommodating cavity (4).

5. An elevator safety clamp and a method of using the same according to claim 4, characterized in that: When the movable floating block docking member (5) is forced to move downward and exert pressure on the inner side of the reserved accommodating cavity (4), liquid is supplied to the interior of the outer friction docking liquid bag member (7) through the supply channel (6).

6. An elevator safety clamp and a method of using the same according to claim 3, characterized in that: The auxiliary secondary positioning structure is provided with a vertical guide groove (16), and the vertical guide groove (16) is opened on the inner side of the built-in wedge-shaped member (2), and a resistance docking member (13) is nested and installed on the inner side of the vertical guide groove (16), and the upper end positions of the resistance docking member (13) and the movable locking member (3) correspond to each other.

7. An elevator safety clamp and a method of using the same according to claim 6, characterized in that: An upper positioning piece (15) is nested and installed inside the upper end of the safety clamp body (1), and a guide reserved roller (11) is rotatably connected to the outer side of the upper positioning piece (15), and a third reserved steel wire rope (14) is butted against the lower end of the upper positioning piece (15), and the third reserved steel wire rope (14) passes through the inner side of the built-in wedge-shaped piece (2), and the end of the third reserved steel wire rope (14) is butted against the lower end of the abutting butt piece (13).

8. An elevator safety clamp and a method of using the same according to claim 7, characterized in that: The movable locking member (3) applies pressure to the contacting abutting member (13) during the upward movement, and the abutting member (13) is pressed to drive the upper positioning member (15) through the third reserved steel wire rope (14) to form a traction structure.

9. An elevator safety clamp and a method of using the same according to claim 8, characterized in that: During the upward movement of the movable locking member (3), the second reserved steel wire rope (9) drives the lower positioning member (10) to form an elastic sliding structure along the lower end of the safety clamp body (1) via the return spring (12), and the lower positioning member (10) and the upper positioning member (15) are arranged alternately.

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