CN113104694B - Safety tongs self-adjusting by instantaneous average deceleration - Google Patents
Safety tongs self-adjusting by instantaneous average deceleration Download PDFInfo
- Publication number
- CN113104694B CN113104694B CN202110495291.6A CN202110495291A CN113104694B CN 113104694 B CN113104694 B CN 113104694B CN 202110495291 A CN202110495291 A CN 202110495291A CN 113104694 B CN113104694 B CN 113104694B
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- Prior art keywords
- rod
- sliding
- average deceleration
- instantaneous average
- frame
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Abstract
The invention belongs to the technical field of safety tongs, in particular to a safety tong which automatically adjusts through instantaneous average deceleration and aims at solving the problem that when the speed of the existing elevator is too high, the problem that the average deceleration can not be safely, quickly and effectively carried out is that the following proposal is proposed, it includes the frame case, the guide rail breach has been seted up in the front of frame case, swing joint has the guide rail in the guide rail breach, two slide openings have been seted up at the top of frame case, equal slidable mounting has the pull rod in two slide openings, the equal swing joint in bottom of two pull rods has lever mechanism, two lever mechanism are the dislocation set, the last supporting seat that is connected with of lever mechanism, be connected with friction reduction gears and guiding mechanism on the supporting seat, guiding mechanism and the interior wall connection of frame case, the top of frame case is provided with lever unit, lever unit and two pull rod rotate and link to each other, the top of frame case is provided with the push rod cylinder. The invention can automatically and uniformly decelerate when the elevator is at an over-high speed.
Description
Technical Field
The invention relates to the technical field of safety tongs, in particular to a safety tong capable of automatically adjusting through instantaneous average deceleration.
Background
The elevator safety gear device is a safety device which emergently stops a car and clamps the car on a guide rail under the control of a speed limiter when the speed of the elevator exceeds the set limit speed of the elevator speed limiter or under the condition that a suspension rope is broken and loosened, provides effective protection effect on the safe operation of the elevator and is generally arranged on a car frame or a counterweight frame.
The existing elevator can not be decelerated averagely through safety, rapidness and effectiveness when the speed is too fast.
Disclosure of Invention
The invention aims to solve the defect that the conventional elevator cannot safely, quickly and effectively perform average deceleration when the speed is too high, and provides a safety tongs automatically adjusted by the instantaneous average deceleration.
In order to achieve the purpose, the invention adopts the following technical scheme:
the safety tongs automatically adjusted through instantaneous average deceleration comprises a frame box, wherein a guide rail notch is formed in the front of the frame box, a guide rail is movably connected in the guide rail notch, two sliding holes are formed in the top of the frame box, pull rods are slidably mounted in the two sliding holes, lever mechanisms are movably connected to the bottoms of the two pull rods respectively and are arranged in a staggered mode, a supporting seat is connected to each lever mechanism, a friction deceleration mechanism and a guiding mechanism are connected to each supporting seat, the guiding mechanism is connected to the inner wall of the frame box, a lever unit is arranged on the top of the frame box and is rotatably connected with the two pull rods, a push rod air cylinder is arranged on the top of the frame box, a connecting block is connected to an output shaft of each push rod air cylinder and is connected with one of the two pull rods, elastic sheets are fixedly mounted on the outer sides of the two pull rods, and one end of a reset spring is fixedly mounted on the tops of the two elastic sheets, the other ends of the two return springs are connected with the inner wall of the frame box.
Preferably, lever mechanism includes helping hand pole and helping hand frame, and the one end of helping hand pole rotates with one side inner wall of frame case and links to each other, and the other end of helping hand pole rotates with the outside of supporting seat and links to each other, has seted up the bar hole on the helping hand pole, and the helping hand frame links to each other with the bottom of the pull rod that corresponds, and the helping hand frame passes through pivot swing joint with the bar hole.
Preferably, friction reduction gears includes sliding block, spring and friction disc, and the sliding tray has been seted up to one side of supporting seat, and the sliding block slides with the sliding tray and links to each other, and the spring setting is between sliding block and sliding tray, and the friction disc links to each other with the sliding block.
Preferably, a plurality of nut grooves are formed in the friction plate, bolts are movably connected in the nut grooves and are in threaded connection with the sliding block, and a plurality of friction pads are arranged on the outer side of the friction plate.
Preferably, the limiting groove has all been seted up to the both sides of sliding block, and fixed mounting has the stopper on the inner wall of sliding groove, stopper and limiting groove sliding connection.
Preferably, guiding mechanism includes hypotenuse seat and hypotenuse pole, and hypotenuse seat fixed mounting is on the inner wall of frame case, and the hypotenuse pole links to each other with the supporting seat that corresponds, and the hypotenuse pole is contradicted with the hypotenuse seat that corresponds and is linked to each other.
Preferably, the hypotenuse breach has been seted up to the hypotenuse of hypotenuse seat, and spacing breach has all been seted up to the both sides of hypotenuse pole, and equal fixed mounting has spacing on the both sides inner wall of hypotenuse breach, and spacing slides with spacing breach and links to each other.
Preferably, a plurality of sliding balls are embedded in the inner wall of the bevel edge notch, and the sliding balls are all in contact with the bevel edge rod.
Preferably, the lever unit comprises a support rod, a pressure rod and two telescopic rods, the support rod is fixedly arranged at the top of the frame box, the center position of the pressure rod is connected with the support rod in a rotating mode, telescopic grooves are formed in two ends of the pressure rod, the telescopic rods are connected with the corresponding telescopic grooves in a sliding mode, and the telescopic rods are connected with the corresponding pull rods in a rotating mode through shaft pins.
Preferably, the pull rod is of an L-shaped structure.
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the connecting block is driven to move by the push rod cylinder, the connecting block drives one pull rod to move upwards, the other pull rod moves downwards by the arranged lever unit, the two supporting seats are close to each other, the supporting seats drive the sliding block and the friction plate to be close to the guide rail, the friction plate is in contact with the guide rail, and the elevator can be decelerated and decelerated by clamping the two sides simultaneously;
(2) the arranged spring can play a role in buffering when the friction plate is contacted with the guide rail, and the arranged guide mechanism can guide the support seat, so that the moving stability of the support seat is ensured;
(3) the push rod cylinder is started reversely, and meanwhile, under the elastic action of the reset spring, the two friction plates can be far away from each other, so that the friction force can be reduced, and the elevator can be controlled to move at a constant speed.
The invention can automatically and uniformly decelerate when the elevator is at an over-high speed.
Drawings
Fig. 1 is a schematic structural diagram of a safety gear which is self-regulated by an instantaneous average deceleration and is provided by the invention;
FIG. 2 shows a safety gear with self-regulation by the instantaneous average deceleration according to the invention
Part A of the structure in FIG. 1 is schematically shown;
fig. 3 is a schematic top view of the safety gear with instantaneous average deceleration self-adjusting according to the present invention;
FIG. 4 is a schematic diagram of the explosion structure of the bevel seat and bevel rod of the safety gear self-adjusting by the instantaneous average deceleration according to the present invention;
fig. 5 is a schematic perspective view of the sliding block and the friction plate of the safety gear self-adjusting by the instantaneous average deceleration according to the present invention.
In the figure: 1. a frame box; 2. a guide rail notch; 3. a slide hole; 4. a pull rod; 5. a support bar; 6. a telescopic groove; 7. a telescopic rod; 8. a push rod cylinder; 9. connecting blocks; 10. a pressure lever; 11. an elastic sheet; 12. a return spring; 13. a bevel seat; 14. a sloping pole; 15. a supporting seat; 16. a spring; 17. a slider; 18. a friction plate; 19. a limiting groove; 20. a booster lever; 21. a strip-shaped hole; 22. a power-assisted frame; 23. a bevel edge notch; 24. a limiting strip; 25. a sliding bead; 26. a limiting notch; 27. a guide rail; 28. a friction pad; 29. a nut groove; 30. and (4) bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-5, the safety gear capable of self-adjusting through instantaneous average deceleration comprises a frame box 1, a guide rail notch 2 is arranged on the front side of the frame box 1, a guide rail 27 is movably connected in the guide rail notch 2, two slide holes 3 are arranged on the top of the frame box 1, pull rods 4 are respectively and slidably arranged in the two slide holes 3, the bottoms of the two pull rods 4 are respectively and movably connected with a lever mechanism, the two lever mechanisms are arranged in a staggered manner, the lever mechanism is connected with a supporting seat 15, the supporting seat 15 is connected with a friction deceleration mechanism and a guide mechanism, the guide mechanism is connected with the inner wall of the frame box 1, the top of the frame box 1 is provided with a lever unit, the lever unit is rotatably connected with the two pull rods 4, the top of the frame box 1 is provided with a push rod cylinder 8, an output shaft of the push rod cylinder 8 is connected with a connecting block 9, the connecting block 9 is connected with one pull rod 4 of the two pull rods 4, elastic pieces 11 are arranged on the outer sides of the two pull rods 4 through welding, one ends of return springs 12 are arranged at the tops of the two elastic pieces 11 through welding, and the other ends of the two return springs 12 are connected with the inner wall of the frame box 1.
In this embodiment, the lever mechanism includes helping hand pole 20 and helping hand frame 22, and the one end of helping hand pole 20 rotates with one side inner wall of frame case 1 and links to each other, and the other end of helping hand pole 20 rotates with the outside of supporting seat 15 and links to each other, has seted up bar hole 21 on the helping hand pole 20, and helping hand frame 22 links to each other with the bottom of the pull rod 4 that corresponds, and helping hand frame 22 passes through pivot swing joint with bar hole 21.
In this embodiment, the friction reducing mechanism includes a sliding block 17, a spring 16 and a friction plate 18, a sliding groove is provided on one side of the support seat 15, the sliding block 17 is connected with the sliding groove in a sliding manner, the spring 16 is disposed between the sliding block 17 and the sliding groove, and the friction plate 18 is connected with the sliding block 17.
In this embodiment, the friction plate 18 is provided with a plurality of nut grooves 29, bolts 30 are movably connected in the nut grooves 29, the bolts 30 are in threaded connection with the sliding blocks 17, and a plurality of friction pads 28 are arranged on the outer side of the friction plate 18.
In this embodiment, limiting groove 19 has all been seted up to sliding block 17's both sides, installs the stopper through the welding on the inner wall of sliding groove, stopper and 19 sliding connection in limiting groove.
In this embodiment, guiding mechanism includes hypotenuse seat 13 and hypotenuse pole 14, and hypotenuse seat 13 passes through welded mounting on the inner wall of frame case 1, and hypotenuse pole 14 links to each other with the supporting seat 15 that corresponds, and hypotenuse pole 14 contradicts with the hypotenuse seat 13 that corresponds and links to each other.
In this embodiment, hypotenuse breach 23 has been seted up to the hypotenuse of hypotenuse seat 13, and spacing breach 26 has all been seted up to the both sides of hypotenuse pole 14, all installs spacing strip 24 through the welding on the both sides inner wall of hypotenuse breach 23, and spacing strip 24 slides with spacing breach 26 and links to each other.
In this embodiment, a plurality of sliding beads 25 are embedded in the inner wall of the bevel edge notch 23, and the sliding beads 25 are all in contact with the bevel edge rod 14.
In this embodiment, the lever unit includes a support rod 5, a press rod 10 and two telescopic rods 7, the support rod 5 is fixedly disposed at the top of the frame box 1, the center position of the press rod 10 is rotatably connected to the support rod 5, the two ends of the press rod 10 are both provided with a telescopic groove 6, the telescopic rods 7 are slidably connected to the corresponding telescopic grooves 6, and the telescopic rods 7 are rotatably connected to the corresponding pull rods 4 through shaft pins.
In this embodiment, the pull rod 4 has an L-shaped structure.
Example two
Referring to fig. 1-5, the safety gear capable of self-adjusting through instantaneous average deceleration comprises a frame box 1, a guide rail notch 2 is arranged on the front side of the frame box 1, a guide rail 27 is movably connected in the guide rail notch 2, two slide holes 3 are arranged on the top of the frame box 1, pull rods 4 are respectively and slidably arranged in the two slide holes 3, the bottoms of the two pull rods 4 are respectively and movably connected with a lever mechanism, the two lever mechanisms are arranged in a staggered manner, the lever mechanism is connected with a supporting seat 15, the supporting seat 15 is connected with a friction deceleration mechanism and a guide mechanism, the guide mechanism is connected with the inner wall of the frame box 1, the top of the frame box 1 is provided with a lever unit, the lever unit is rotatably connected with the two pull rods 4, the top of the frame box 1 is provided with a push rod cylinder 8, an output shaft of the push rod cylinder 8 is connected with a connecting block 9, the connecting block 9 is connected with one pull rod 4 of the two pull rods 4, the equal fixed mounting in outside of two pull rods 4 has elastic sheet 11, and the equal fixed mounting in top of two elastic sheet 11 has reset spring 12's one end, and two reset spring 12's the other end all links to each other with the inner wall of frame case 1, and reset spring 12 of setting can provide elasticity that resets for pull rod 4.
In this embodiment, the lever mechanism includes helping hand pole 20 and helping hand frame 22, and the one end of helping hand pole 20 rotates with one side inner wall of frame case 1 and links to each other, and the other end of helping hand pole 20 rotates with the outside of supporting seat 15 and links to each other, has seted up bar hole 21 on the helping hand pole 20, and helping hand frame 22 links to each other with the bottom of the pull rod 4 that corresponds, and helping hand frame 22 passes through pivot swing joint with bar hole 21.
In this embodiment, the friction reducing mechanism includes a sliding block 17, a spring 16 and a friction plate 18, a sliding groove is provided on one side of the support seat 15, the sliding block 17 is connected with the sliding groove in a sliding manner, the spring 16 is disposed between the sliding block 17 and the sliding groove, and the friction plate 18 is connected with the sliding block 17.
In this embodiment, a plurality of nut grooves 29 are formed in the friction plate 18, a bolt 30 is movably connected in the nut grooves 29, the bolt 30 is in threaded connection with the sliding block 17, a plurality of friction pads 28 are arranged on the outer side of the friction plate 18, and the friction plate 18 can be detached and replaced by detaching the bolt 30.
In this embodiment, limiting groove 19 has all been seted up to sliding block 17's both sides, and fixed mounting has the stopper on the inner wall of sliding groove, stopper and 19 sliding connection in limiting groove.
In this embodiment, guiding mechanism includes hypotenuse seat 13 and hypotenuse pole 14, and 13 fixed mounting of hypotenuse seat are on the inner wall of frame case 1, and hypotenuse pole 14 links to each other with the supporting seat 15 that corresponds, and hypotenuse pole 14 is contradicted with the hypotenuse seat 13 that corresponds and is linked to each other, sets up guiding mechanism and can guarantee that hypotenuse pole 14 moves steadily.
In this embodiment, hypotenuse breach 23 has been seted up to the hypotenuse of hypotenuse seat 13, and spacing breach 26 has all been seted up to the both sides of hypotenuse pole 14, and equal fixed mounting has spacing strip 24 on the both sides inner wall of hypotenuse breach 23, and spacing strip 24 slides with spacing breach 26 and links to each other, sets up spacing strip 24 and spacing breach 26 and can guarantee that hypotenuse pole 14 slides in hypotenuse breach 23.
In this embodiment, a plurality of sliding balls 25 are embedded in the inner wall of the bevel edge notch 23, the sliding balls 25 are all in contact with the bevel edge rod 14, and the sliding balls 25 are arranged to reduce the friction force of the bevel edge rod 14.
In this embodiment, the lever unit includes a support rod 5, a press rod 10 and two telescopic rods 7, the support rod 5 is fixedly disposed at the top of the frame box 1, the center position of the press rod 10 is rotatably connected to the support rod 5, telescopic grooves 6 are respectively formed at two ends of the press rod 10, the telescopic rods 7 are slidably connected to the corresponding telescopic grooves 6, the telescopic rods 7 are rotatably connected to the corresponding pull rods 4 through shaft pins, and the lever unit is configured to keep one pull rod 4 moving upwards and the other pull rod 4 moving downwards.
In this embodiment, the pull rod 4 has an L-shaped structure.
In the embodiment, when the elevator is used, the frame box 1 is connected with the outer body of the elevator through screws, the guide rail 27 is connected with the guide rail notch 2, the elevator is provided with a speed sensor and a PLC (programmable logic controller), the speed sensor can visually reflect the movement speed of the elevator, if the speed is too high, the push rod cylinder 8 drives the connecting block 9 to move, the connecting block 9 drives one pull rod 4 to move upwards, the other pull rod 4 moves downwards through the arranged lever unit, one supporting seat 15 moves downwards through the arranged lever mechanism, the other supporting seat 15 moves upwards, the two supporting seats 15 are close to each other, the supporting seats 15 drive the sliding block 17 and the friction plate 18 to be close to the guide rail 27, the friction plate 18 is contacted with the guide rail 27, the elevator can be decelerated through simultaneous clamping at two sides, the elevator can be decelerated, and the arranged spring 16 can play a role of buffering when the friction plate 18 is contacted with the guide rail 27, the guiding mechanism who sets up can be for the 15 direction of supporting seat, guarantees the stability that supporting seat 15 removed, and reverse start push rod cylinder 8 can make two friction discs 18 keep away from each other simultaneously under reset spring 12's elastic force effect, can reduce frictional force, can control the elevator uniform motion.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The safety tongs automatically adjusted through instantaneous average deceleration comprises a frame box (1), wherein a guide rail notch (2) is formed in the front of the frame box (1), a guide rail (27) is movably connected in the guide rail notch (2), and the safety tongs are characterized in that two sliding holes (3) are formed in the top of the frame box (1), pull rods (4) are respectively installed in the two sliding holes (3) in a sliding manner, lever mechanisms are respectively and movably connected to the bottoms of the two pull rods (4) in a staggered manner, a supporting seat (15) is connected to each lever mechanism, a friction deceleration mechanism and a guide mechanism are connected to each supporting seat (15), the guide mechanisms are connected with the inner wall of the frame box (1), a lever unit is arranged at the top of the frame box (1), the lever unit is rotatably connected with the two pull rods (4), and a push rod cylinder (8) is arranged at the top of the frame box (1), be connected with connecting block (9) on the output shaft of push rod cylinder (8), connecting block (9) link to each other with one pull rod (4) in two pull rods (4), the equal fixed mounting in the outside of two pull rods (4) has elastic sheet (11), the equal fixed mounting in top of two elastic sheet (11) has the one end of reset spring (12), the other end of two reset spring (12) all links to each other with the inner wall of frame case (1).
2. The safety tongs automatically adjusted through the instantaneous average deceleration according to claim 1, characterized in that the lever mechanism comprises a power-assisted rod (20) and a power-assisted frame (22), one end of the power-assisted rod (20) is rotatably connected with the inner wall of one side of the frame box (1), the other end of the power-assisted rod (20) is rotatably connected with the outer side of the support seat (15), a strip-shaped hole (21) is formed in the power-assisted rod (20), the power-assisted frame (22) is connected with the bottom end of the corresponding pull rod (4), and the power-assisted frame (22) is movably connected with the strip-shaped hole (21) through a shaft pin.
3. A safety gear with self-adjusting instantaneous average deceleration according to claim 1, characterized in that the friction deceleration mechanism comprises a sliding block (17), a spring (16) and a friction plate (18), one side of the support (15) is provided with a sliding groove, the sliding block (17) is connected with the sliding groove in a sliding way, the spring (16) is arranged between the sliding block (17) and the sliding groove, and the friction plate (18) is connected with the sliding block (17).
4. The safety gear capable of automatically adjusting through instantaneous average deceleration according to claim 3, characterized in that a plurality of nut grooves (29) are formed in the friction plate (18), a bolt (30) is movably connected in each nut groove (29), the bolt (30) is in threaded connection with the sliding block (17), and a plurality of friction pads (28) are arranged on the outer side of the friction plate (18).
5. The safety gear capable of automatically adjusting through the instantaneous average deceleration as claimed in claim 3, wherein both sides of the sliding block (17) are provided with limiting grooves (19), the inner wall of each sliding groove is fixedly provided with a limiting block, and the limiting blocks are slidably connected with the limiting grooves (19).
6. Safety gear with self-regulation by means of an instantaneous average deceleration according to claim 1, characterized in that said guiding means comprise a sloping seat (13) and a sloping rod (14), the sloping seat (13) being fixedly mounted on the inner wall of the frame box (1), the sloping rod (14) being associated with a corresponding support seat (15), the sloping rod (14) being in abutting connection with the corresponding sloping seat (13).
7. The safety gear capable of automatically adjusting through the instantaneous average deceleration according to claim 6, characterized in that the bevel edge of the bevel edge seat (13) is provided with a bevel edge notch (23), both sides of the bevel edge rod (14) are provided with limit notches (26), both side inner walls of the bevel edge notch (23) are fixedly provided with limit strips (24), and the limit strips (24) are connected with the limit notches (26) in a sliding manner.
8. Safety gear with self-adjusting by means of instantaneous average deceleration according to claim 7, characterized in that the inner wall of the bevel notch (23) is embedded with a plurality of sliding beads (25), the sliding beads (25) all being in contact with the bevel lever (14).
9. The safety tongs self-adjusting through instantaneous average deceleration according to claim 1, characterized in that the lever unit comprises a support rod (5), a pressure rod (10) and two telescopic rods (7), the support rod (5) is fixedly arranged at the top of the frame box (1), the center position of the pressure rod (10) is rotatably connected with the support rod (5), telescopic grooves (6) are respectively formed at two ends of the pressure rod (10), the telescopic rods (7) are slidably connected with the corresponding telescopic grooves (6), and the telescopic rods (7) are rotatably connected with the corresponding pull rods (4) through shaft pins.
10. Safety gear self-adjusting by means of an instantaneous average deceleration according to claim 1, characterized in that said tie-rods (4) are of L-shaped configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110495291.6A CN113104694B (en) | 2021-05-07 | 2021-05-07 | Safety tongs self-adjusting by instantaneous average deceleration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110495291.6A CN113104694B (en) | 2021-05-07 | 2021-05-07 | Safety tongs self-adjusting by instantaneous average deceleration |
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| CN113104694A CN113104694A (en) | 2021-07-13 |
| CN113104694B true CN113104694B (en) | 2022-03-01 |
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| CN113104694B (en) * | 2021-05-07 | 2022-03-01 | 南通中力科技有限公司 | Safety tongs self-adjusting by instantaneous average deceleration |
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| CN113104694A (en) * | 2021-05-07 | 2021-07-13 | 南通中力科技有限公司 | Safety tongs self-adjusting by instantaneous average deceleration |
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2021
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|---|---|---|---|---|
| GB191304750A (en) * | 1913-02-25 | 1914-02-25 | David Dunlop Wales | Improvements in or connected with Catch Gear of Lifting and Lowering Apparatus. |
| JP2007204165A (en) * | 2006-01-30 | 2007-08-16 | Toshiba Elevator Co Ltd | Emergency stop device for elevator |
| CN201411299Y (en) * | 2009-05-22 | 2010-02-24 | 赵士山 | Forced rope-breaking and speed-limiting safety anti-fall catch for construction hoist |
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| CN207330031U (en) * | 2017-08-25 | 2018-05-08 | 山西东迅自动化设备有限公司 | A kind of elevator safety gear |
| CN208454243U (en) * | 2018-06-06 | 2019-02-01 | 石家庄通安机械有限公司 | Elevator counterweight safety device |
| CN211283319U (en) * | 2019-12-16 | 2020-08-18 | 沈阳石安机械有限公司 | Elevator safety clamp assembly |
| CN113104694A (en) * | 2021-05-07 | 2021-07-13 | 南通中力科技有限公司 | Safety tongs self-adjusting by instantaneous average deceleration |
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