CN111776908A - Anti-failure elevator safety tongs and elevator - Google Patents
Anti-failure elevator safety tongs and elevator Download PDFInfo
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- CN111776908A CN111776908A CN202010713559.4A CN202010713559A CN111776908A CN 111776908 A CN111776908 A CN 111776908A CN 202010713559 A CN202010713559 A CN 202010713559A CN 111776908 A CN111776908 A CN 111776908A
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
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- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- B66B5/22—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 by means of linearly-movable wedges
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Abstract
The invention discloses an anti-failure elevator safety tongs, which comprises a lifting rod, a main tong body and an auxiliary tong body, wherein main wedge blocks are arranged in the main tong body, each main wedge block is connected with one lifting rod, and auxiliary wedge blocks are arranged in the auxiliary tong body; open in the main voussoir has main holding tank, and main holding tank opening is equipped with the gyro wheel towards the guide rail in the main holding tank, and the gyro wheel part stretches out main holding tank, even has the gear on the gyro wheel, and it has the guiding hole that corresponds vice voussoir to open on the main voussoir, and the guiding hole communicates with each other with main holding tank, is equipped with the rack in the guiding hole, rack and gear engagement, the bottom of rack and the vice voussoir fixed connection who corresponds. An elevator adopts above-mentioned elevator safety tongs of preventing becoming invalid. The invention has the advantages that: the auxiliary clamp body can be automatically started to generate braking force under the condition that the main clamp body fails, and the safety coefficient is improved. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.
Description
Technical Field
The invention relates to an anti-failure elevator safety tongs and an elevator.
Background
The elevator is the transportation equipment that people are commonly used, and high-rise building all uses car elevator especially, and current car elevator all is equipped with safety tongs, but a guide rail generally corresponds and sets up a safety tongs, and when the elevator dropped down suddenly, the safety tongs can be drawn close each other and press from both sides tight guide rail, plays emergency braking's effect, nevertheless because only a safety tongs, in case can produce very big threat to the life of the person of taking in the elevator in failure.
Disclosure of Invention
The invention aims to provide an anti-failure elevator safety gear and an elevator, which can effectively solve the problem that the existing elevator has only one pair of safety gears and the safety coefficient is not enough.
In order to solve the technical problems, the invention is realized by the following technical scheme: an anti-failure elevator safety gear comprises a lifting rod, a main gear body and an auxiliary gear body, wherein the main gear body is arranged above the auxiliary gear body, two main wedge blocks which move upwards along the vertical direction under the action of the lifting rod and mutually approach to a clamping guide rail are arranged in the main gear body, each main wedge block is connected with one lifting rod, and two auxiliary wedge blocks which move upwards along the vertical direction and mutually approach to the clamping guide rail are arranged in the auxiliary gear body;
the wedge-shaped wedge is characterized in that a main containing groove is formed in the main wedge block, an opening of the main containing groove faces the guide rail, a roller is arranged in the main containing groove, the roller partially extends out of the main containing groove, a gear is connected to the roller, a guide hole corresponding to the auxiliary wedge block is formed in the main wedge block, the guide hole is communicated with the main containing groove, a rack is arranged in the guide hole, the rack is meshed with the gear, and the bottom of the rack is fixedly connected.
Preferably, the main clamp body and the auxiliary clamp body are integrally arranged; or the main clamp body and the auxiliary clamp body are fixedly connected through bolts. The integrally arranged main clamp body and the auxiliary clamp body have good rigidity and connection stability, and the safety is higher; the split main clamp body and the split auxiliary clamp body are suitable for improving the existing equipment, the maintenance cost can be reduced, and the main clamp body or the auxiliary clamp body with a fault can be independently replaced.
Preferably, the internal main cavity room that is equipped with of main tong, the inside wall of main cavity room is close to the main cavity middle part from supreme down gradually and forms main spigot surface, be equipped with two in the main cavity room main voussoir, two leave the clearance that lets the guide rail pass through between the main voussoir, two main voussoir all is equipped with the main wedge inclined plane with main spigot surface looks adaptation. When the main wedge block moves under the action of upward force, the main guide surface is contacted with the inclined surface of the main wedge block, and the two main wedge blocks are extruded towards the middle to be close to each other and tightly hold the guide rail for braking.
Preferably, the surface of the main wedge opposite to the guide rail is a plane. The plane is easy to process, is beneficial to reducing the production cost and is convenient to install.
Preferably, the auxiliary clamp body is internally provided with an auxiliary cavity, the inner side wall of the auxiliary cavity is gradually close to the middle part of the auxiliary cavity from bottom to top to form an auxiliary guide surface, two auxiliary wedge blocks are arranged in the auxiliary cavity, a gap for the guide rail to pass through is also reserved between the two auxiliary wedge blocks, and the two auxiliary wedge blocks are both provided with auxiliary wedge inclined surfaces matched with the auxiliary guide surfaces. When the auxiliary wedge block moves upwards under the action of the main wedge block, the auxiliary guide surface contacts with the inclined surface of the auxiliary wedge block to extrude the two auxiliary wedge blocks towards the middle, so that the two auxiliary wedge blocks are close to each other to hold the guide rail tightly for braking.
Preferably, the surface of the auxiliary wedge block opposite to the guide rail is a plane.
Preferably, the lifting rod is fixedly connected with the top of the corresponding main wedge block. The lifting rod generates upward pulling force to pull the main wedge blocks to close.
Preferably, the side surface of the auxiliary chamber is open, and a baffle plate for closing the opening is arranged on the side surface of the auxiliary clamp body. The side opening conveniently will install the main voussoir, can also make things convenient for interior fixed rack.
Preferably, the idler wheel comprises a wheel shaft and two rubber wheels, the wheel shaft is rotatably connected to the main wedge block, the gear is sleeved on the wheel shaft, and the two rubber wheels are respectively fixed on the wheel shafts at two ends of the gear. The rubber wheels are fixed at two ends of the gear, so that the gear is prevented from colliding with the guide rail, and meanwhile, a large friction force is formed between the rubber wheels and the guide rail, so that the rubber wheels can be driven to rotate and the gear can be driven to rotate.
An elevator adopts above-mentioned elevator safety tongs of preventing becoming invalid.
Compared with the prior art, the invention has the advantages that: through setting up the vice pincers body, when the main pincers body became invalid, the gyro wheel will continue to rotate with the guide rail contact to drive gear also rotates, and the rotation of gear drives the rack and rises at vertical direction, thereby drives vice voussoir upward movement, and the interval between two vice voussoirs reduces and embraces the guide rail tightly, produces the braking force, stops the car braking, and this device can the automatic start vice pincers body production braking force under the condition that the main pincers body became invalid, has improved factor of safety. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.
Drawings
Fig. 1 is a structural view of a failure-preventing elevator safety gear of the present invention;
FIG. 2 is a schematic view of the structure A-A in FIG. 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 and 2, the embodiment of the invention is an anti-failure elevator safety tongs, which comprises a lifting rod 1, a main tong body 2 and an auxiliary tong body 3, wherein the main tong body 2 is arranged above the auxiliary tong body 3, two main wedges 5 moving upwards along the vertical direction under the action of the lifting rod 1 and approaching to each other to clamp a guide rail 4 are arranged in the main tong body 2, each main wedge 5 is connected with one lifting rod 1, and two auxiliary wedges 6 moving upwards along the vertical direction and approaching to each other to clamp the guide rail 4 are arranged in the auxiliary tong body 3;
the main wedge block is characterized in that a main accommodating groove 20 is formed in the main wedge block 5, the opening of the main accommodating groove 20 faces the guide rail 4, a roller 21 is arranged in the main accommodating groove, the roller partially extends out of the main accommodating groove, the roller 21 is connected with a gear 22, a guide hole 23 corresponding to the auxiliary wedge block 6 is formed in the main wedge block 5, the guide hole 23 is communicated with the main accommodating groove 20, a rack 24 is arranged in the guide hole 23, the rack 24 is meshed with the gear 22, and the bottom of the rack 24 is fixedly connected with the corresponding auxiliary wedge block 6.
Through setting up the vice pincers body, when the main pincers body became invalid, the gyro wheel will continue to rotate with the guide rail contact to make gear 22 begin to rotate, gear 22's rotation drives the rack 24 of meshing along the downthehole vertical upward movement of guiding, thereby rack 24 pulling vice voussoir upward movement, the guide rail is held tightly in the reduction of the interval between two vice voussoirs, produce the braking force, stop the car, this device can the automatic start vice pincers body production braking force under the condition that the main pincers body became invalid, factor of safety has been improved. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.
Generally, it is preferable that the main clamp body 2 and the auxiliary clamp body 3 are manufactured integrally, so that the safety and the stability are relatively high, and of course, the main clamp body 2 and the auxiliary clamp body 3 can be separately arranged and connected through bolts, so that the old equipment is convenient to reform, and the maintenance cost is also favorably reduced.
To the structure of the main tong body 2, be equipped with main cavity room 7 in the main tong body 2, the inside wall of main cavity room 7 is close to formation main spigot surface 8 from supreme to main cavity room 7 middle part gradually down, be equipped with two in the main cavity room 7 main voussoir 5, two leave the clearance that lets guide rail 4 pass through between the main voussoir 5, two main voussoir 5 all is equipped with the main wedge inclined plane 9 with 8 looks adaptations of main spigot surface, main voussoir 5 is the plane with the relative face of guide rail 4, and it also can understand for main cavity room 7 is the four terrace with edges on only one inclined plane, and main voussoir 5 is the four terrace with edges on only one inclined plane, and the track of main voussoir 5 upward movement can also be controlled in the time of providing main voussoir 5 lateral force to such design, guarantees that main voussoir 5 can not take place the rotation when the motion, makes main vous. The gap between the two main wedges 5 allows the guide rail to pass through when the elevator normally moves, and when emergency braking is needed, the two main wedges are close to each other, and the gap gradually disappears.
Similarly, the structure of the auxiliary clamp body 3 is similar to that of the main clamp body 2, an auxiliary cavity 10 is arranged in the auxiliary clamp body 3, the inner side wall of the auxiliary cavity 10 is gradually close to the middle of the auxiliary cavity 10 from bottom to top to form an auxiliary guide surface 11, two auxiliary wedge blocks 6 are arranged in the auxiliary cavity 10, a gap for the guide rail 4 to pass through is also reserved between the two auxiliary wedge blocks 6, the two auxiliary wedge blocks 6 are both provided with auxiliary wedge inclined surfaces 12 matched with the auxiliary guide surfaces 11, and the surfaces of the auxiliary wedge blocks 6 opposite to the guide rail 4 are planes.
In the design, the lifting rod 1 is fixedly connected with the top of the corresponding main wedge block 5, and when the car falls, the lifting rod 1 moves upwards to pull the main wedge block 5 upwards, so that the main wedge block 5 clamps the guide rail 4 for braking.
The side of the auxiliary cavity is provided with an opening, the side of the auxiliary clamp body is provided with a baffle 28 for sealing the opening, the opening is convenient for mounting a main wedge block, the opening is sealed by the baffle 28 after mounting, and foreign matters are prevented from entering to influence the work of the auxiliary clamp body.
Because the gear 22 is connected to the roller, in order to protect the gear 22, the roller 21 includes a wheel shaft 29 and two rubber wheels 31, the wheel shaft 29 is rotatably connected to the main wedge, the gear 22 is sleeved on the wheel shaft 29, the two rubber wheels 31 are respectively fixed to the wheel shafts 29 at two ends of the gear 22, the gear 22 is protected by the rubber wheels 31, the gear 22 is prevented from touching the guide rail, and meanwhile, the rubber wheels 31 can also increase friction force, so that the wheel shaft 29 can drive the gear 22 to rotate as soon as possible.
The invention also discloses an elevator, and the anti-failure elevator safety tongs adopting the technical scheme are adopted.
During the use, will carry pull rod 1 to install, if the car falls, carry pull rod 1 pulling master wedge 5 upward movement, two master wedge 5 draw close each other under the effect of leading face 8, press from both sides tight guide rail 4, the main pincers body is instantaneous safety tongs, can stop promptly when the car takes place to fall, consequently because master wedge 5 upward movement, can drive vice voussoir 6 also upward movement, interval between two vice voussoir 6 is slightly bigger than the interval between two master wedge 5 when the design needs this moment, guarantee that master wedge 5 is holding the guide rail and stops when, two vice voussoirs 6 can not touch the guide rail. However, when the braking force of the main tong body 2 is insufficient, the roller continues to rotate, the roller drives the gear 22 to rotate, the gear 22 drives the meshed rack 24 to move upwards, the rack 24 drives the auxiliary wedge block 6 connected with the bottom to move upwards, the distance between the two auxiliary wedge blocks 6 is gradually reduced under the interaction of the auxiliary guide surface 11 and the auxiliary wedge inclined surface 12, finally the guide rail is tightly held, the braking force is generated, the elevator car continues to fall, and therefore after the main tong body 2 fails, the auxiliary tong body 3 plays a role, and the safety of the elevator is ensured.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. The utility model provides a prevent elevator safety tongs that loses effect which characterized in that: the clamp comprises a lifting rod (1), a main clamp body (2) and an auxiliary clamp body (3), wherein the main clamp body (2) is arranged above the auxiliary clamp body (3), two main wedge blocks (5) which move upwards along the vertical direction under the action of the lifting rod (1) and mutually approach to a clamping guide rail (4) are arranged in the main clamp body (2), each main wedge block (5) is connected with one lifting rod (1), and two auxiliary wedge blocks (6) which move upwards along the vertical direction and mutually approach to the clamping guide rail (4) are arranged in the auxiliary clamp body (3); it has main holding tank (20) to open in main voussoir (5), main holding tank (20) opening is towards guide rail (4), be equipped with gyro wheel (21) in the main holding tank, the gyro wheel part stretches out main holding tank, gyro wheel (21) even have gear (22), main voussoir (5) are gone up to open have with the guiding hole (23) that correspond vice voussoir (6), guiding hole (23) with main holding tank (20) communicate with each other, be equipped with rack (24) in guiding hole (23), rack (24) and gear (22) meshing, the bottom and the vice voussoir (6) fixed connection who corresponds of rack (24).
2. The elevator safety gear of claim 1, characterized in that: the main clamp body (2) and the auxiliary clamp body (3) are integrally arranged; or the main clamp body (2) and the auxiliary clamp body (3) are fixedly connected through bolts.
3. The elevator safety gear of claim 1, characterized in that: be equipped with main cavity room (7) in the main tong body (2), the inside wall of main cavity room (7) is from supreme being close to formation main spigot surface (8) to main cavity room (7) middle part gradually down, be equipped with two in main cavity room (7) main voussoir (5), two leave the clearance that lets guide rail (4) pass through between main voussoir (5), two main voussoir (5) all are equipped with main wedge inclined plane (9) with main spigot surface (8) looks adaptation.
4. The elevator safety gear of claim 3, characterized in that: the surface of the main wedge block (5) opposite to the guide rail (4) is a plane.
5. The elevator safety gear of claim 1, characterized in that: be equipped with vice cavity (10) in vice pincers body (3), the inside wall of vice cavity (10) is close to formation vice spigot surface (11) from supreme down to vice cavity (10) middle part gradually, be equipped with two in vice cavity (10) vice voussoir (6), two also leave the clearance that lets guide rail (4) pass through between vice voussoir (6), two vice voussoir (6) all are equipped with vice wedge inclined plane (12) with vice spigot surface (11) looks adaptation.
6. The elevator safety gear of claim 5, characterized in that: the surface of the auxiliary wedge block (6) opposite to the guide rail (4) is a plane.
7. The elevator safety gear of claim 1, characterized in that: the lifting rod (1) is fixedly connected with the top of the corresponding main wedge block (5).
8. The elevator safety gear of claim 5, characterized in that: the side of the main cavity is open, and the side of the main clamp body is provided with a baffle (28) for closing the opening.
9. The elevator safety gear of claim 1, characterized in that: the roller (21) comprises a wheel shaft (29) and two rubber wheels (31), the wheel shaft (29) is rotatably connected to the main wedge block, the gear (22) is sleeved on the wheel shaft (29), and the two rubber wheels (31) are respectively fixed on the wheel shaft (29) at two ends of the gear (22).
10. An elevator characterized in that: use of a fail safe elevator safety gear as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713559.4A CN111776908B (en) | 2020-07-20 | Failure-preventing elevator safety tongs and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713559.4A CN111776908B (en) | 2020-07-20 | Failure-preventing elevator safety tongs and elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111776908A true CN111776908A (en) | 2020-10-16 |
| CN111776908B CN111776908B (en) | 2024-05-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058256A1 (en) * | 2014-10-16 | 2016-04-21 | 邹家春 | Weightless safety clamp |
| CN106219351A (en) * | 2016-08-30 | 2016-12-14 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
| CN106241549A (en) * | 2016-08-30 | 2016-12-21 | 浙江西子富沃德电机有限公司 | A kind of elevator bidirectional safety tongs |
| CN206051206U (en) * | 2016-08-30 | 2017-03-29 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
| CN213265219U (en) * | 2020-07-20 | 2021-05-25 | 台州学院 | Anti-failure elevator safety tongs and elevator |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058256A1 (en) * | 2014-10-16 | 2016-04-21 | 邹家春 | Weightless safety clamp |
| CN106219351A (en) * | 2016-08-30 | 2016-12-14 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
| CN106241549A (en) * | 2016-08-30 | 2016-12-21 | 浙江西子富沃德电机有限公司 | A kind of elevator bidirectional safety tongs |
| CN206051206U (en) * | 2016-08-30 | 2017-03-29 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
| CN213265219U (en) * | 2020-07-20 | 2021-05-25 | 台州学院 | Anti-failure elevator safety tongs and elevator |
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Inventor after: Bi Cheng Inventor after: Li Renpeng Inventor after: Qu Bo Inventor before: Qu Bo Inventor before: Bi Cheng Inventor before: Li Yinpeng |
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