CN111776908B - Failure-preventing elevator safety tongs and elevator - Google Patents
Failure-preventing elevator safety tongs and elevator Download PDFInfo
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- CN111776908B CN111776908B CN202010713559.4A CN202010713559A CN111776908B CN 111776908 B CN111776908 B CN 111776908B CN 202010713559 A CN202010713559 A CN 202010713559A CN 111776908 B CN111776908 B CN 111776908B
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- elevator
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- 238000013459 approach Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 210000000080 chela (arthropods) Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses an anti-failure elevator safety clamp which comprises a lifting rod, a main clamp body and an auxiliary clamp body, wherein a main wedge block is arranged in the main clamp body, each main wedge block is connected with one lifting rod, and an auxiliary wedge block is arranged in the auxiliary clamp body; the main wedge block is internally provided with a main accommodating groove, an opening of the main accommodating groove faces the guide rail, a roller is arranged in the main accommodating groove, a part of the roller extends out of the main accommodating groove, a gear is connected to the roller, the main wedge block is provided with a guide hole corresponding to the auxiliary wedge block, the guide hole is communicated with the main accommodating groove, a rack is arranged in the guide hole and meshed with the gear, and the bottom of the rack is fixedly connected with the corresponding auxiliary wedge block. An elevator adopts the anti-failure elevator safety tongs. 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, so that the safety coefficient is improved. After the elevator adopts the structure, double guarantee is provided for the common elevator when the elevator fails, and the safety of the elevator car is ensured.
Description
Technical Field
The invention relates to an anti-failure elevator safety tongs and an elevator.
Background
The elevator is a common transportation device for people, in particular to a car elevator used in a high-rise building, the existing car elevator is provided with safety tongs, but generally a guide rail is correspondingly provided with the safety tongs, when the elevator suddenly drops down, the safety tongs can be mutually close to clamp the guide rail to play a role of emergency braking, but because only one safety tongs is provided, the life of passengers in the elevator can be greatly threatened in case of failure.
Disclosure of Invention
The invention aims to provide an anti-failure elevator safety tongs and an elevator, which can effectively solve the problem that the existing elevator has only one pair of safety tongs and has insufficient safety coefficient.
In order to solve the technical problems, the invention is realized by the following technical scheme: the anti-failure elevator safety tongs comprise lifting rods, a main tongs body and an auxiliary tongs body, wherein the main tongs body is arranged above the auxiliary tongs body, two main wedges which move upwards along the vertical direction under the action of the lifting rods and mutually draw close to a clamping guide rail are arranged in the main tongs body, each main wedge is connected with one lifting rod, and two auxiliary wedges which move upwards along the vertical direction and mutually draw close to the clamping guide rail are arranged in the auxiliary tongs body;
The main wedge block is internally provided with a main accommodating groove, an opening of the main accommodating groove faces the guide rail, a roller is arranged in the main accommodating groove, a part of the roller extends out of the main accommodating groove, a gear is connected to the roller, the main wedge block is provided with a guide hole corresponding to the auxiliary wedge block, the guide hole is communicated with the main accommodating groove, a rack is arranged in the guide hole and meshed with the gear, and the bottom of the rack is fixedly connected with the corresponding auxiliary wedge block.
Preferably, the main clamp body and the auxiliary clamp body are integrally arranged; or the main clamp body is fixedly connected with the auxiliary clamp body through bolts. The main clamp body and the auxiliary clamp body which are integrally arranged have good rigidity and stability of connection, and the safety is higher; the split main clamp body and the split auxiliary clamp body are suitable for improving the existing equipment, so that the maintenance cost can be reduced, and the main clamp body or the auxiliary clamp body with faults can be independently replaced.
Preferably, the main forceps body is internally provided with a main chamber, the inner side wall of the main chamber gradually approaches to the middle part of the main chamber from bottom to top to form a main guide surface, two main wedges are arranged in the main chamber, a gap for a guide rail to pass through is reserved between the two main wedges, and the two main wedges are respectively provided with a main wedge inclined surface matched with the main guide surface. When the main wedge blocks are acted by upward force to move, the main guide surfaces are contacted with the inclined surfaces of the main wedge blocks, and the two main wedge blocks are pressed towards the middle to be mutually close to clamp the guide rail for braking.
Preferably, the surface of the main wedge block opposite to the guide rail is a plane. The plane is easy to process, the production cost is reduced, and the installation is convenient.
Preferably, the auxiliary clamp body is internally provided with an auxiliary chamber, the inner side wall of the auxiliary chamber gradually approaches to the middle part of the auxiliary chamber from bottom to top to form an auxiliary guide surface, two auxiliary wedges are arranged in the auxiliary chamber, a gap for a guide rail to pass through is reserved between the two auxiliary wedges, and the two auxiliary wedges are respectively provided with an auxiliary wedge inclined surface matched with the auxiliary guide surface. The auxiliary wedge blocks move upwards after being acted by the main wedge block, the auxiliary guide surfaces are contacted with the inclined surfaces of the auxiliary wedge blocks, the two auxiliary wedge blocks are extruded towards the middle, and the two auxiliary wedge blocks are mutually close to each other to tightly clamp the guide rail 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 be close.
Preferably, the side face of the auxiliary chamber is opened, and a baffle plate for closing the opening is arranged on the side face of the auxiliary clamp body. The side face is opened, so that the main wedge block can be conveniently installed, and the rack can be conveniently and internally fixed.
Preferably, the roller comprises a wheel shaft and two rubber wheels, the wheel shaft is rotationally 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 the two ends of the gear, so that the gear is prevented from colliding with the guide rail, and meanwhile, larger 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 is driven to rotate.
An elevator adopts the anti-failure elevator safety tongs.
Compared with the prior art, the invention has the advantages that: through setting up vice pincers body, when the main pincers body became invalid, gyro wheel and guide rail contact will continue to rotate to drive gear also rotates, and the rotation of gear drives the rack and rises in vertical direction, thereby drives vice voussoir upward movement, and interval between two vice voussoirs reduces and hugs tightly the guide rail, produces the braking force, stops the car, and this device can automatic start vice pincers body produce the braking force under the condition that the main pincers body became invalid, has improved factor of safety. After the elevator adopts the structure, double guarantee is provided for the common elevator when the elevator fails, and the safety of the elevator car is ensured.
Drawings
Fig. 1 is a structural view of a fail-safe elevator safety gear of the present invention;
FIG. 2 is a schematic diagram 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 by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Referring to fig. 1 and 2, an embodiment of an anti-failure elevator safety tongs of the invention comprises a lifting rod 1, a main tongs body 2 and an auxiliary tongs body 3, wherein the main tongs body 2 is provided with the auxiliary tongs body 3 at the upper part, the main tongs body 2 is internally provided with two main wedges 5 which are moved upwards along the vertical direction under the action of the lifting rod 1 to mutually close a clamping guide rail 4, each main wedge 5 is connected with one lifting rod 1, and the auxiliary tongs body 3 is internally provided with two auxiliary wedges 6 which are moved upwards along the vertical direction to mutually close the clamping guide rail 4;
the main wedge 5 is internally provided with a main accommodating groove 20, the opening of the main accommodating groove 20 faces the guide rail 4, a roller 21 is arranged in the main accommodating groove, a part of the roller extends out of the main accommodating groove, the roller 21 is connected with a gear 22, the main wedge 5 is provided with a guide hole 23 corresponding to the auxiliary wedge 6, the guide hole 23 is communicated with the main accommodating groove 20, the guide hole 23 is internally provided with a rack 24, the rack 24 is meshed with the gear 22, and the bottom of the rack 24 is fixedly connected with the corresponding auxiliary wedge 6.
Through setting up vice pincers body, when the main pincers body became invalid, gyro wheel and guide rail contact will continue to rotate to make gear 22 begin to rotate, gear 22's rotation drives the rack 24 of meshing and moves along the guiding hole is vertical upwards, thereby rack 24 pulling vice voussoir upward movement, and the interval between two vice voussoirs reduces and holds tightly the guide rail, produces the braking force, stops the car, and this device can automatic start vice pincers body under the condition that the main pincers body became invalid produces the braking force, has improved factor of safety. After the elevator adopts the structure, double guarantee is provided for the common elevator when the elevator fails, and the safety of the elevator car is ensured.
Generally, the main clamp body 2 and the auxiliary clamp body 3 are preferably integrally manufactured, so that the safety and stability are relatively high, the main clamp body 2 and the auxiliary clamp body 3 can be separately arranged, and the main clamp body and the auxiliary clamp body are connected through bolts, so that old equipment is convenient to reform, and the maintenance cost is also facilitated to be reduced.
For the structure of the main clamp body 2, a main cavity 7 is arranged in the main clamp body 2, the inner side wall of the main cavity 7 gradually approaches to the middle part of the main cavity 7 from bottom to top to form a main guide surface 8, two main wedges 5 are arranged in the main cavity 7, a gap for the guide rail 4 to pass through is reserved between the two main wedges 5, two main wedges 5 are all provided with main wedge inclined surfaces 9 matched with the main guide surface 8, the surface of the main wedges 5 opposite to the guide rail 4 is a plane, the main cavity 7 can be understood as a quadrangular frustum of a bevel, the main wedges 5 are quadrangular frustum of a bevel, the track of upward movement of the main wedges 5 can be controlled while the transverse force is provided for the main wedges 5, the main wedges 5 are prevented from rotating in the movement process, and the track of the main wedges 5 is always in plane contact. The gap between the two main wedges 5 allows the guide rail to pass through when the elevator is in normal motion, and when emergency braking is required, the two main wedges are mutually closed, and the gap gradually disappears.
The structure of the auxiliary clamp body 3 is similar to that of the main clamp body 2, an auxiliary chamber 10 is arranged in the auxiliary clamp body 3, the inner side wall of the auxiliary chamber 10 gradually approaches the middle part of the auxiliary chamber 10 from bottom to top to form an auxiliary guide surface 11, two auxiliary wedges 6 are arranged in the auxiliary chamber 10, a gap for the guide rail 4 to pass through is reserved between the two auxiliary wedges 6, auxiliary wedge inclined surfaces 12 matched with the auxiliary guide surface 11 are arranged on the two auxiliary wedges 6, and the surface of the auxiliary wedges 6 opposite to the guide rail 4 is a plane.
In the design, the lifting rod 1 is fixedly connected with the top of the corresponding main wedge block 5, 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 opening of auxiliary chamber, the side of auxiliary tong body is equipped with the baffle 28 that seals the opening, sets up this opening and conveniently installs the main voussoir, seals the opening through baffle 28 after the installation, prevents that the foreign matter from getting into and influencing auxiliary tong body work.
Because connect gear 22 on the gyro wheel, in order to protect gear 22, gyro wheel 21 includes shaft 29 and two rubber wheels 31, shaft 29 rotates to be connected on the main voussoir, gear 22 cover is on shaft 29, two rubber wheels 31 are fixed respectively on the shaft 29 at gear 22 both ends, protect gear 22 through rubber wheels 31, prevent gear 22 from touching the guide rail, rubber wheels 31 also can increase frictional force simultaneously, let shaft 29 drive gear 22 rotation as soon as possible.
The invention also discloses an elevator, and the anti-failure elevator safety tongs adopting the technical scheme.
When the elevator car lifting device is used, the lifting rod 1 is installed, if an elevator car falls, the lifting rod 1 pulls the main wedges 5 to move upwards, the two main wedges 5 are mutually closed under the action of the main guide surface 8, the guide rail 4 is clamped, the main clamp body is an instantaneous safety clamp, namely, the elevator car can be stopped instantly when falling, so that the auxiliary wedges 6 can be driven to move upwards in the process due to the upward movement of the main wedges 5, the distance between the two auxiliary wedges 6 is slightly larger than the distance between the two main wedges 5 when the elevator car is designed, and the main wedges 5 are ensured not to touch the guide rail when the guide rail is stopped tightly. However, when the braking force of the main pincer 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 moves upwards with the auxiliary wedge blocks 6 connected with the bottom, 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, the guide rail is finally held tightly, the braking force is generated, and the tissue car continues to fall, so that after the main pincer body 2 fails, the auxiliary pincer body 3 plays a role, and the safety of the elevator is ensured.
The above embodiments are merely illustrative embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present invention are included in the scope of the present invention.
Claims (10)
1. An anti-failure elevator safety tongs which is 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 wedges (5) which move upwards along the vertical direction under the action of the lifting rod (1) to mutually close a clamping guide rail (4) are arranged in the main clamp body (2), each main wedge (5) is connected with one lifting rod (1), and two auxiliary wedges (6) which move upwards along the vertical direction to mutually close the clamping guide rail (4) are arranged in the auxiliary clamp body (3); main holding tank (20) have been opened 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, two rubber tyer (31) parts that the gyro wheel set up stretch out main holding tank, gyro wheel (21) even have gear (22), main voussoir (5) go up open have with guide hole (23) of corresponding vice voussoir (6), guide hole (23) with main holding tank (20) communicate with each other, be equipped with rack (24) in guide hole (23), rack (24) and gear (22) meshing, the bottom and the vice voussoir (6) fixed connection of correspondence of rack (24).
2. A fail-safe elevator safety gear according to claim 1, wherein: the main clamp body (2) and the auxiliary clamp body (3) are integrally arranged; or the main clamp body (2) is fixedly connected with the auxiliary clamp body (3) through bolts.
3. A fail-safe elevator safety gear according to claim 1, wherein: the main forceps is characterized in that a main cavity (7) is arranged in the main forceps body (2), the inner side wall of the main cavity (7) gradually approaches the middle part of the main cavity (7) from bottom to top to form a main guide surface (8), two main wedges (5) are arranged in the main cavity (7), a gap for the guide rail (4) to pass through is reserved between the two main wedges (5), and two main wedges (5) are respectively provided with a main wedge inclined surface (9) matched with the main guide surface (8).
4. A fail-safe elevator safety gear according to claim 3, wherein: the surface of the main wedge block (5) opposite to the guide rail (4) is a plane.
5. A fail-safe elevator safety gear according to claim 1, wherein: the auxiliary clamp is characterized in that an auxiliary chamber (10) is arranged in the auxiliary clamp body (3), the inner side wall of the auxiliary chamber (10) gradually approaches the middle of the auxiliary chamber (10) from bottom to top to form an auxiliary guide surface (11), two auxiliary wedges (6) are arranged in the auxiliary chamber (10), a gap for the guide rail (4) to pass through is reserved between the two auxiliary wedges (6), and two auxiliary wedge inclined surfaces (12) matched with the auxiliary guide surface (11) are arranged on the auxiliary wedges (6).
6. A fail-safe elevator safety gear according to claim 5, wherein: the surface of the auxiliary wedge block (6) opposite to the guide rail (4) is a plane.
7. A fail-safe elevator safety gear according to claim 1, wherein: the lifting rod (1) is fixedly connected with the top of the corresponding main wedge block (5).
8. A fail-safe elevator safety gear according to claim 3, wherein: the side face of the main cavity is opened, and a baffle (28) for closing the opening is arranged on the side face of the main clamp body.
9. A fail-safe elevator safety gear according to claim 1, wherein: the roller (21) comprises a wheel shaft (29) and two rubber wheels (31), the wheel shaft (29) is rotationally 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 shafts (29) at two ends of the gear (22).
10. An elevator, characterized in that: use of a fail-safe elevator safety gear according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713559.4A CN111776908B (en) | 2020-07-20 | 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 | 2020-07-20 | Failure-preventing elevator safety tongs and elevator |
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| Publication Number | Publication Date |
|---|---|
| CN111776908A CN111776908A (en) | 2020-10-16 |
| CN111776908B true CN111776908B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010713559.4A Active CN111776908B (en) | 2020-07-20 | 2020-07-20 | Failure-preventing elevator safety tongs and elevator |
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| CN (1) | CN111776908B (en) |
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 |
-
2020
- 2020-07-20 CN CN202010713559.4A patent/CN111776908B/en active Active
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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| Publication number | Publication date |
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| CN111776908A (en) | 2020-10-16 |
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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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