Elevator safety tongs

Abstract

The elevator safety tongs comprise a shell, a first wedge block and a second wedge block, wherein the first wedge block and the second wedge block are symmetrically arranged. The elevator safety tongs further comprise a shifting mechanism, a reset mechanism, a connecting plate and a reset elastic piece, the first wedge block and the second wedge block are movably connected with the connecting plate, and the reset elastic piece is connected with the connecting plate and the shell. The shifting mechanism comprises a rotating shaft and a shifting piece provided with a shifting plate, the rotating shaft is rotatably installed on the shell, the shifting piece is installed on the rotating shaft, the shifting plate is provided with a shifting part, the shifting part is located below the connecting plate, and the reset mechanism is used for driving the rotating shaft to rotate so that the shifting piece can be reset. The elevator safety tongs have the following advantages that the movement synchronism of the first wedge block and the second wedge block is better, the clamping reliability of the first wedge block and the second wedge block is improved, and the safety of the elevator safety tongs is higher; the whole structure is relatively simple, and the processing and assembling difficulty is reduced, so that the production cost is reduced; and the resetting capability of the resetting mechanism is more reliable.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of elevators, and relates to a component of an elevator, in particular to an elevator safety gear. BACKGROUND

[0002] The elevator safety gear is a core safety protection device of an elevator, which functions to stop the elevator car and reliably clamp it on the guide rail in an emergency such as when the elevator speed exceeds the limit speed set by the speed limiter or the suspension rope is broken or loosened, thereby protecting the safety of passengers and equipment in the elevator.

[0003] In the prior art, an integrated brake device for an elevator is disclosed in an invention patent with application number 202011031064X, in which the elevator safety gear adopts two split-type movable wedge blocks, and the two movable wedge blocks are driven to move by two side arms of a yoke installed on a rotating shaft. However, this structure has the following defects: firstly, the two side arms of the yoke drive two split-type wedge blocks respectively, and under the influence of machining precision and assembly error, the motion synchronization of the two wedge blocks is poor, which leads to unbalanced clamping force of the two wedge blocks on the elevator guide rail, reduces the clamping reliability, and further affects the safety performance of the elevator safety gear; secondly, the overall structure contains many components, and the structure of the yoke and other parts is complex, so the overall structure of the elevator safety gear is complex, which not only increases the machining and assembly difficulty, but also increases the production cost, which is not conducive to the large-scale production and long-term development of enterprises. Therefore, there is an urgent need for an elevator safety gear that can solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide an elevator safety gear to solve the above technical problems.

[0005] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: an elevator safety gear, comprising a shell, a first wedge block and a second wedge block symmetrically arranged;

[0006] The elevator safety gear further comprises a poking mechanism, a reset mechanism, a connecting plate and a reset elastic member, the first wedge block and the second wedge block are respectively movably connected with the connecting plate, the reset elastic member is connected with the connecting plate and the shell respectively, and the reset elastic member is used to drive the first wedge block and the second wedge block to reset;

[0007] The poking mechanism comprises a rotating shaft and a poking member provided with a poking plate, the rotating shaft is rotatably installed on the shell, the poking member is installed on the rotating shaft, the poking plate is provided with a poking part, the poking part is located below the connecting plate, and the reset mechanism is used to drive the rotating shaft to rotate so as to reset the poking member.

[0008] Further, the toggle member is located in the shell, and the toggle member is provided with a toggle plate, one end of the toggle plate is provided with the toggle part, and the other end of the toggle plate is provided with a mounting plate, the mounting plate extends upwardly and obliquely, and the mounting plate is mounted on the rotating shaft.

[0009] Further, the toggle mechanism further comprises a toggle crank, one end of the toggle crank is mounted on the rotating shaft, and the other end of the toggle crank is provided with a connecting strip, and the connecting strip is connected with a moving end of a speed governor of the elevator.

[0010] Further, the reset mechanism comprises a reset tension spring and a reset crank, one end of the reset crank is mounted on the rotating shaft, and the reset tension spring is located outside the shell, one end of the reset tension spring is connected with the shell, and the other end of the reset tension spring is connected with the reset crank, and the reset tension spring is arranged obliquely in a natural state.

[0011] Further, one end of the reset tension spring is connected with a rotating plate, the rotating plate is rotatably mounted on the side plate of the shell through a connecting assembly, the rotating plate is located at the outer side of the shell, and the rotating plate and the toggle part of the toggle plate are located at the same side of the rotating shaft.

[0012] Further, the connecting assembly comprises a locking screw, a locking nut, a first side ring, a sleeve and a second side ring, the first side ring, the sleeve, the second side ring and the locking nut are sequentially sleeved on a screw rod of the locking screw, the locking nut is threadedly connected with the screw rod of the locking screw, and the two ends of the sleeve are attached to one side of the first side ring and one side of the second side ring respectively; the rotating plate has an "L" shape, the rotating plate is provided with a first horizontal plate and a first vertical plate, the first vertical plate and the side plate of the shell are sleeved on the sleeve between the first side ring and the second side ring, the sum of the thickness of the first vertical plate and the thickness of the side plate of the shell is less than the length of the sleeve, and one end of the reset tension spring is connected with the first horizontal plate.

[0013] Further, the connecting plate has an "L" shape, the connecting plate is provided with a second horizontal plate and a second vertical plate, a connecting screw is mounted on the second horizontal plate, a screw nut of the connecting screw is located at the bottom of the second horizontal plate, the screw nut of the connecting screw is in upward and downward correspondence with the toggle part of the toggle plate, one end of the reset elastic member is connected with the top of the shell, and the other end of the reset elastic member is connected with a screw rod of the connecting screw; the second vertical plate is provided with a first transverse groove and a second transverse groove, the first wedge block and the second wedge block are respectively provided with a first insertion rod and a second insertion rod, the first insertion rod and the second insertion rod are mounted on the second vertical plate, the first insertion rod is matched with the first transverse groove and can slide along the first transverse groove, and the second insertion rod is matched with the second transverse groove and can slide along the second transverse groove.

[0014] Furthermore, the reset elastic element is a reset spring.

[0015] Furthermore, the elevator safety gear is also equipped with a linkage mechanism, which includes a connecting rod and a linkage crank. The two ends of the connecting rod are respectively connected to a first adjustment component and a second adjustment component. One end of the first adjustment component is hinged to the reset crank, and one end of the second adjustment component is hinged to one end of the linkage crank. The other end of the linkage crank is mounted on the shaft of another elevator safety gear.

[0016] Furthermore, the first adjustment assembly and the second adjustment assembly have the same structure; the first adjustment assembly includes a connecting screw, a U-shaped fork and a connecting piece, one end of the connecting piece is connected to the reset crank hinge, and the other end is connected to one end of the connecting screw, the other end of the connecting screw passes through the U-shaped fork, a first adjusting nut and a second adjusting nut are fitted on the connecting screw, the U-shaped fork is located between the first adjusting nut and the second adjusting nut, and the U-shaped fork is connected to one end of the connecting rod.

[0017] Beneficial effects of this invention:

[0018] 1. Improved Synchronization and Reliability: By using a single lever to drive the first and second wedges of the integrated structure to move synchronously, the elevator guide rails can be clamped and the car can be stopped in an emergency. This significantly improves the problem of poor synchronization in the existing technology and enhances the clamping reliability and safety performance.

[0019] 2. Simplified structure and reduced cost: The first and second wedges adopt an integrated design, combined with a novel and simple actuation mechanism, which simplifies the overall structure of the elevator safety clamp, reduces the number of parts, reduces the difficulty of processing and assembly and production costs, and helps to enhance the company's market competitiveness;

[0020] 3. System structure optimization: The linkage mechanism and reset mechanism are designed to be simple, and a single reset mechanism is used to reset the pair of elevator safety gears, which simplifies the structure between the pair of elevator safety gears;

[0021] 4. Optimized reset mechanism: The reset spring is rotatably connected to the housing through a rotating plate and connecting components, ensuring that the tilt angle of the reset spring gradually decreases during the tossing process (the tilt angle is the smallest when the elevator guide rail is clamped), thereby effectively increasing the reset pull force and improving the reset reliability and the overall stability of the elevator safety gear. Attached Figure Description

[0022] Figure 1 This is a first perspective view of the elevator safety clamp according to an embodiment of the present invention.

[0023] Figure 2 This is a second perspective view of the elevator safety clamp according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the first structure of the actuating mechanism according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the second structure of the actuating mechanism according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure when the actuating element moves the first and second wedge blocks.

[0027] Figure 6 This is the first perspective view of the toggle mechanism.

[0028] Figure 7 This is the second perspective view of the toggle mechanism.

[0029] Figure 8 This is a schematic diagram of the first structure where the first and second wedges are installed on the connecting plate.

[0030] Figure 9 This is a schematic diagram of the second structure where the first and second wedges are installed on the connecting plate.

[0031] Figure 10 This is a 3D view of the connecting plate.

[0032] Figure 11 It is a 3D diagram of the connecting components.

[0033] Figure 12 This is a schematic diagram of the longitudinal section of the connecting component.

[0034] Figure 13 This is the first structural schematic diagram of the linkage mechanism.

[0035] Figure 14 This is a schematic diagram of the second structure of the linkage mechanism.

[0036] Figure 15 This is a schematic diagram of the structure of the first adjustment component.

[0037] Figure 16 This is a schematic diagram of the elevator safety clamp applied to an elevator according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Elevator safety clamp; 2. Linkage mechanism; 3. Elevator car base frame;

[0040] 11. Housing 12. Actuating mechanism 13. Reset mechanism 14. Connecting plate 15. Reset elastic element 16. First wedge 17. Second wedge 18. First guide element 19.

[0041] Side panel 111;

[0042] 121 rotating shaft, 122 actuating element, 123 actuating crank, 124 connecting bar;

[0043] Dial plate 1221, mounting plate 1222;

[0044] Actuator 12211;

[0045] 131, 132, 133, 134; Reset spring 131, reset crank 132, rotating plate 133, connecting assembly 134;

[0046] First horizontal plate 1331, first vertical plate 1332;

[0047] Locking screw 1341, locking nut 1342, sleeve 1343, first side ring 1344, second side ring 1345;

[0048] Second vertical plate 141, second horizontal plate 142, connecting screw 143;

[0049] First transverse groove 1411, second transverse groove 1412;

[0050] First insertion rod 161;

[0051] Second insertion rod 171;

[0052] Connecting rod 21, first adjusting component 22, second adjusting component 23, linkage crank 24;

[0053] Connecting screw 221, first adjusting nut 222, second adjusting nut 223, U-shaped fork 224, connecting piece 225. Detailed Implementation

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] like Figure 1 and Figure 2As shown, the elevator safety clamp 1 of this embodiment includes a housing 11, a first wedge 16 and a second wedge 17, a first guide member 18 and a second guide member 19 mounted on the housing 11. The first guide member 18 and the second guide member 19 are both located within the housing 11 and arranged symmetrically in a figure-eight shape. The first wedge 16 and the second wedge 17 are slidably mounted on the first guide member 18 and the second guide member 19, respectively. The first wedge 16 and the second wedge 17 have a symmetrical structure. The first wedge 16 can slide diagonally up and down on the first guide member 18, and the second wedge 17 can slide diagonally up and down on the second guide member 19. A guide position is formed between the first wedge 16 and the second wedge 17, and the elevator guide rail cooperates with the guide position. The structures of the first guide member 18 and the second guide member 19, the structure of the first wedge 16 mounted on the first guide member 18, and the structure of the second wedge 17 mounted on the second guide member 19 are all prior art and therefore will not be described in further detail.

[0056] The elevator safety brake 1 also includes an actuating mechanism 12, a reset mechanism 13, a connecting plate 14, and a reset elastic element 15. (See reference...) Figure 10 The connecting plate 14 is L-shaped and has a second horizontal plate 142 and a second vertical plate 141. The second vertical plate 141 has a first horizontal groove 1411 and a second horizontal groove 1412. A connecting screw 143 is mounted on the second horizontal plate 142, with the screw nut located at the bottom of the second horizontal plate 142. (Refer to...) Figure 8 and Figure 9 The sides of the first wedge 16 and the second wedge 17 are respectively machined with a first insert rod 161 and a second insert rod 171. The first insert rod 161 and the second insert rod 171 are both installed on the second vertical plate 141. The first insert rod 161 cooperates with the first horizontal groove 1411 and can slide laterally along the first horizontal groove 1411. The second insert rod 171 cooperates with the second horizontal groove 1412 and can slide laterally along the second horizontal groove 1412, thereby realizing the movable connection of the first wedge 16 and the second wedge 17 to the connecting plate 14.

[0057] The reset elastic element 15 is designed as a reset spring, referring to... Figure 2 and Figure 5 The return spring is located between the second horizontal plate 142 and the top of the housing 11. The lower end of the return spring is fitted onto the screw of the connecting screw 143, and the upper end of the return spring is connected to the top of the housing 11. The function of the return elastic element 15 is to drive the connecting plate 14 to move downward, thereby driving the first wedge block 16 and the second wedge block 17 to reset.

[0058] Reference Figure 3 and Figure 4The actuating mechanism 12 includes a rotating shaft 121 and an actuating element 122 with a lever 1221. The rotating shaft 121 is rotatably mounted on the housing 11, with one end passing through one side of the housing 11 and extending out from the other side. (See reference...) Figure 6 and Figure 7 The actuating element 122 has an "L"-shaped structure. One end of the actuating plate 1221 has an actuating part 12211, and the other end has a mounting plate 1222. The mounting plate 1222 extends upward at an angle, and the included angle between the mounting plate 1222 and the actuating plate 1221 is designed to be 105°. The mounting plate 1222 is fixed to the rotating shaft 121, thereby enabling the actuating element 122 to be installed inside the upper housing 11 of the rotating shaft 121. The actuating part 12211 of the actuating plate 1221 is located below the connecting plate 14, and the nut of the connecting screw 143 corresponds vertically to the actuating part 12211. The actuating mechanism 12 also includes an actuating crank 123. One end of the actuating crank 123 is installed at one end of the rotating shaft 121, and the other end of the actuating crank 123 is installed with a connecting strip 124, which is connected to the actuating end of the elevator's speed governor.

[0059] The reset mechanism 13 is used to drive the rotating shaft 121 to rotate, thereby driving the actuating element 122 to reset. (See reference...) Figure 3 and Figure 4 The reset mechanism 13 includes a reset spring 131 and a reset crank 132. One end of the reset crank 132 is fixed to the rotating shaft 121. The reset spring 131 is located on the outer side of the housing 11. One end of the reset spring 131 is connected to a rotating plate 133, and the other end is connected to the middle of the reset crank 132. The rotating plate 133 is rotatably connected to the side plate 111 of the housing 11 via a connecting assembly 134. The rotating plate 133 is located on the outer side of the housing 11. The rotating plate 133 and the actuating part 12211 of the actuating plate 1221 are located on the same side of the rotating shaft 121. In its natural state, the reset spring 131 is inclined. The angle between the center line of the reset spring 131 and the bottom plate of the housing 11 is 45°. The center line of the reset spring 131 is parallel to the actuating plate 1221 of the actuating member 122, and the center line of the reset spring 131 is parallel to the side plate 111 of the housing 11.

[0060] Reference Figure 11 and Figure 12The connecting assembly 134 includes a locking screw 1341, a locking nut 1342, a first side ring 1344, a sleeve 1343, and a second side ring 1345. The first side ring 1344, the sleeve 1343, the second side ring 1345, and the locking nut 1342 are sequentially fitted onto the screw of the locking screw 1341. The locking nut 1342 is threadedly connected to the screw of the locking screw 1341. The two ends of the sleeve 1343 are respectively attached to one side of the first side ring 1344 and one side of the second side ring 1345. The rotating plate 133 is L-shaped and has a first horizontal plate 1331 and a first vertical plate 1332. The first vertical plate 1332 and the side plate 111 of the housing 11 are both fitted onto the sleeve 1343 between the first side ring 1344 and the second side ring 1345. The sum of the thickness of the first vertical plate 1332 and the thickness of the side plate 111 of the housing 11 is less than the length of the sleeve 1343, so that the first vertical plate 1332 of the rotating plate 133 can always rotate on the side plate 111 of the housing 11. One end of the return spring 131 is connected to the first horizontal plate 1331.

[0061] The elevator safety brake 1 is also equipped with a linkage mechanism 2. (Refer to...) Figure 13 and Figure 14 The linkage mechanism 2 includes a connecting rod 21 with a "U"-shaped cross-section and a linkage crank 24. A first adjusting component 22 and a second adjusting component 23 are respectively connected to both ends of the connecting rod 21. One end of the first adjusting component 22 is hinged to one end of the reset crank 132, and one end of the second adjusting component 23 is hinged to one end of the linkage crank 24. The other end of the linkage crank 24 is mounted on the rotating shaft 121 of another elevator safety gear 1. Figure 16 As shown. (Refer to...) Figure 16 Two elevator safety clamps 1 are symmetrically arranged below the elevator car base frame 3. These two elevator safety clamps 1 form a pair of safety clamps. During operation, the elevator safety clamp 1 on the left is linked with the elevator safety clamp 1 on the right through the linkage mechanism 2, simultaneously stopping the elevator car in an emergency and clamping it onto the elevator guide rail. In a preferred design, the connecting rod 21 is manufactured using a stamping process.

[0062] The first adjusting component 22 and the second adjusting component 23 have the same structure, and the connection structure between the first adjusting component 22 and the connecting rod 21 is the same as the connection structure between the second adjusting component 23 and the connecting rod 21. (Refer to...) Figure 15The first adjustment assembly 22 includes a connecting screw 221, a U-shaped fork 224, and a connecting piece 225. One end of the connecting piece 225 is hinged to the reset crank 132, and the other end is welded to one end of the connecting screw 221. The other end of the connecting screw 221 passes through the U-shaped fork 224. A first adjusting nut 222 and a second adjusting nut 223 are fitted on the connecting screw 221. The U-shaped fork 224 is located between the first adjusting nut 222 and the second adjusting nut 223. The U-shaped fork 224 is connected to one end of the connecting rod 21 by bolts.

[0063] The working principle of the elevator safety clamp 1 of the present invention is as follows: (Refer to...) Figure 1 The elevator's speed governor's operating end along Figure 1 When the connecting bar 124 is pulled in the direction of arrow A, the connecting bar 124 drives the crank 123 to rotate, the crank 123 drives the shaft 121 to rotate in the forward direction, the shaft 121 drives the reset crank 132 and the actuating element 12 to rotate in the forward direction, the reset crank 132 drives the reset spring 131 to stretch and generate a reset force, the actuating part 12211 of the actuating element 122 drives the connecting plate 14 to move upward, and then drives the first wedge 16 and the second wedge 17 to move upward. When the first wedge 16 and the second wedge 17 are in place, the reset spring is in a compressed state, the first wedge 16 and the second wedge 17 clamp the elevator guide rail, and the elevator car is stopped in an emergency and clamped on the elevator guide rail.

[0064] When the elevator speed governor releases the connecting bar 124, the reset tension of the reset spring 131 drives the reset crank 132 to rotate in the opposite direction. The reset crank 132 drives the rotating shaft 121 to rotate in the opposite direction. The rotating shaft 121 drives the toggle member 12 to rotate in the opposite direction to reset. At the same time, the reset elastic member 15 drives the connecting plate 14 to move downward, which in turn drives the first wedge 16 and the second wedge 17 to move downward to reset. After the first wedge 16 and the second wedge 17 are reset, the first wedge 16 and the second wedge 17 release the elevator guide rail.

[0065] The advantages of the elevator safety clamp of the present invention are as follows:

[0066] 1. The elevator car is stopped in an emergency by using a single lever to drive the first and second wedge blocks, which are of an integrated structure, to move and clamp the elevator guide rail. This ensures that the first and second wedge blocks move completely synchronously during the driving process, which solves the problem of poor synchronization in existing elevator safety clamps, significantly improves the reliability of clamping the elevator guide rail, and enhances the safety performance of the elevator safety clamp.

[0067] 2. The first and second wedges are integrated into one structure. The actuation mechanism has a novel, simple and practical structure, which simplifies the overall structure of the elevator safety gear and reduces the number of parts. The overall structure of the elevator safety gear is relatively simple, which reduces the difficulty of processing and assembly, reduces production costs, and enhances the company's market competitiveness.

[0068] 3. The structure of the linkage mechanism and the reset mechanism is also relatively simple, and a single reset mechanism is used to reset the two pairs of elevator safety gears, which simplifies the structure between the pairs of elevator safety gears;

[0069] 4. The reset spring of the reset mechanism is connected to the housing by a rotating plate and a connecting assembly. This ensures that one end of the reset spring can always rotate with the housing during operation. During the toggle mechanism's operation, the tilt angle of the reset spring gradually decreases (the tilt angle of the reset spring is the smallest when the first and second wedges clamp the elevator guide rails), thereby effectively increasing the reset tension of the reset spring, improving the reset reliability of the reset mechanism, and thus improving the overall stability of the elevator safety gear.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elevator safety clamp, comprising a housing (11), a first wedge (16) and a second wedge (17) symmetrically arranged, characterized in that: The elevator safety clamp (1) further includes a toggle mechanism (12), a reset mechanism (13), a connecting plate (14), and a reset elastic element (15). The first wedge (16) and the second wedge (17) are movably connected to the connecting plate (14), and the reset elastic element (15) is connected to the connecting plate (14) and the housing (11), respectively. The reset elastic element (15) is used to drive the first wedge (16) and the second wedge (17) to reset. The actuating mechanism (12) includes a rotating shaft (121) and an actuating element (122) with a dial plate (1221). The rotating shaft (121) is rotatably mounted on the housing (11). The actuating element (122) is mounted on the rotating shaft (121). The dial plate (1221) has an actuating part (12211) located below the connecting plate (14). The reset mechanism (13) is used to drive the rotating shaft (121) to rotate so that the actuating element (122) is reset.

2. The elevator safety clamp according to claim 1, characterized in that, The actuating element (122) is located inside the housing (11). The actuating element (122) is provided with a dial plate (1221). One end of the dial plate (1221) is provided with the actuating part (12211), and the other end is provided with a mounting plate (1222). The mounting plate (1222) extends upward at an angle and is mounted on the rotating shaft (121).

3. The elevator safety clamp according to claim 1, characterized in that, The actuating mechanism (12) further includes an actuating crank (123), one end of which is mounted on the rotating shaft (121), and the other end is mounted with a connecting strip (124), which is connected to the actuating end of the elevator's speed limiter.

4. The elevator safety clamp according to claim 1, characterized in that, The reset mechanism (13) includes a reset spring (131) and a reset crank (132). One end of the reset crank (132) is mounted on the rotating shaft (121). The reset spring (131) is located outside the housing (11). One end of the reset spring (131) is connected to the housing (11), and the other end is connected to the reset crank (132). In its natural state, the reset spring (131) is inclined.

5. The elevator safety clamp according to claim 4, characterized in that, One end of the reset spring (131) is connected to a rotating plate (133). The rotating plate (133) is rotatably mounted on the side plate (111) of the housing (11) via a connecting assembly (134). The rotating plate (133) is located on the outer side of the housing (11). The rotating plate (133) and the actuating part (12211) of the lever (1221) are located on the same side of the rotating shaft (121).

6. The elevator safety clamp according to claim 5, characterized in that, The connecting assembly (134) includes a locking screw (1341), a locking nut (1342), a first side ring (1344), a sleeve (1343), and a second side ring (1345). The first side ring (1344), sleeve (1343), second side ring (1345), and locking nut (1342) are sequentially fitted onto the threaded shaft of the locking screw (1341). The locking nut (1342) is threadedly connected to the threaded shaft of the locking screw (1341). The two ends of the sleeve (1343) are respectively fitted to one side of the first side ring (1344) and one side of the second side ring (1345). The rotating plate (133) is L-shaped. The rotating plate (133) is provided with a first horizontal plate (1331) and a first vertical plate (1332). The first vertical plate (1332) and the side plate (111) of the housing (11) are both fitted on the sleeve (1343) between the first side ring (1344) and the second side ring (1345). The sum of the thickness of the first vertical plate (1332) and the thickness of the side plate (111) of the housing (11) is less than the length of the sleeve (1343). One end of the reset spring (131) is connected to the first horizontal plate (1331).

7. The elevator safety clamp according to claim 1, characterized in that, The connecting plate (14) is L-shaped. It has a second horizontal plate (142) and a second vertical plate (141). A connecting screw (143) is mounted on the second horizontal plate (142). The nut of the connecting screw (143) is located at the bottom of the second horizontal plate (142). The nut of the connecting screw (143) corresponds vertically to the actuating part (12211) of the lever plate (1221). One end of the reset elastic element (15) is connected to the top of the housing (11), and the other end is connected to the screw rod of the connecting screw (143). The second vertical plate (141) is provided with a first horizontal groove (1411) and a second horizontal groove (1412). The first wedge (16) and the second wedge (17) are respectively provided with a first insert rod (161) and a second insert rod (171). The first insert rod (161) and the second insert rod (171) are installed on the second vertical plate (141). The first insert rod (161) cooperates with the first horizontal groove (1411) and can slide along the first horizontal groove (1411). The second insert rod (171) cooperates with the second horizontal groove (1412) and can slide along the second horizontal groove (1412).

8. The elevator safety clamp according to claim 1 or 7, characterized in that, The reset elastic element (15) is a reset spring.

9. The elevator safety clamp according to claim 4, characterized in that, The elevator safety gear is also provided with a linkage mechanism (2). The linkage mechanism (2) includes a connecting rod (21) and a linkage crank (24). The two ends of the connecting rod (21) are respectively connected to a first adjustment component (22) and a second adjustment component (23). One end of the first adjustment component (22) is hinged to the reset crank (132), and one end of the second adjustment component (23) is hinged to one end of the linkage crank (24). The other end of the linkage crank (24) is installed on the shaft (121) of another elevator safety gear.

10. The elevator safety clamp according to claim 9, characterized in that, The first adjustment component (22) and the second adjustment component (23) have the same structure; the first adjustment component (22) includes a connecting screw (221), a U-shaped fork (224) and a connecting piece (225). One end of the connecting piece (225) is hinged to the reset crank (132), and the other end is connected to one end of the connecting screw (221). The other end of the connecting screw (221) passes through the U-shaped fork (224). A first adjusting nut (222) and a second adjusting nut (223) are fitted on the connecting screw (221). The U-shaped fork (224) is located between the first adjusting nut (222) and the second adjusting nut (223). The U-shaped fork (224) is connected to one end of the connecting rod (21).

Images