CN111776909A - Cam type failure-prevention elevator safety tongs and elevator - Google Patents
Cam type failure-prevention elevator safety tongs and elevator Download PDFInfo
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- CN111776909A CN111776909A CN202010713641.7A CN202010713641A CN111776909A CN 111776909 A CN111776909 A CN 111776909A CN 202010713641 A CN202010713641 A CN 202010713641A CN 111776909 A CN111776909 A CN 111776909A
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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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)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses cam-type failure-prevention elevator safety tongs, which comprise a lifting rod, a main tong body and an auxiliary tong body, wherein a main wedge block is arranged in the main tong body, an auxiliary wedge block is arranged in the auxiliary tong body, a main accommodating groove is formed in the main wedge block, the opening of the main accommodating groove faces a guide rail, a roller is arranged in the main accommodating groove, the main wedge block is also provided with a first guide hole which enables the main accommodating groove to be communicated with the auxiliary wedge block corresponding to the vertical direction, a cam driven to rotate by the roller is also arranged in the main accommodating groove, a second guide hole is formed in the bottom of the auxiliary wedge block corresponding to the main wedge block, the top of a mandril is arranged in the second guide hole, the bottom of the mandril is in contact with the surface of the. An elevator adopts above-mentioned cam type to prevent losing effect elevator safety tongs. The invention has the advantages that: when the main clamp body fails, the auxiliary clamp body exerts a braking effect, 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 a cam type failure-prevention elevator safety gear 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 a cam type failure-prevention 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: the cam type failure-prevention elevator safety tongs comprise a lifting rod, a main tong body and an auxiliary tong body, wherein the auxiliary tong body is arranged above the main tong body, two main wedge blocks which move upwards along the vertical direction under the action of the lifting rod and mutually approach to clamp a guide rail are arranged in the main tong 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 clamp the guide rail are arranged in the auxiliary tong body;
the utility model discloses a wedge structure, including main wedge, main holding tank, guide rail, gyro wheel, main wedge, vice wedge, main wedge, the interior main holding tank that has opened of main wedge, main holding tank opening is towards the guide rail, be equipped with the gyro wheel in the main holding tank, main wedge still has opened the communicating first guiding hole of vice wedge that makes main holding tank and vertical direction correspond, still be equipped with in the main holding tank by the rotatory cam of gyro wheel drive, correspond with main wedge the bottom of vice wedge is opened there is the second guiding hole, be equipped with the top of ejector pin in the second guiding hole, the bottom and the cam surface contact of ejector pin are by the lift of the rotatory.
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 bottom of the corresponding main wedge block. The lifting rod generates upward thrust to push the main wedge blocks to close.
Preferably, the idler wheel comprises a wheel shaft and rubber wheels, the wheel shaft is rotatably connected to two opposite side walls of the main chamber, the cam is sleeved on the wheel shaft, and the rubber wheels are respectively sleeved on the wheel shafts at two ends of the cam. The rubber wheel is in contact with the guide rail, and sufficient friction force is provided to drive the cam to rotate, so that the ejector rod is driven to move upwards to jack the auxiliary wedge block.
Preferably, the side surface of the main chamber is open, and a baffle plate for closing the opening is arranged on the side surface of the main clamp body. The side opening is convenient for the installation of the main wedge block and the ejector rod, and after the installation is finished, the opening is timely sealed through the baffle plate, so that the main wedge block is protected from being influenced in movement.
An elevator adopts above-mentioned cam type to prevent losing effect 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, the gyro wheel took place relative slip with the guide rail contact, and the rotation of gyro wheel drives the cam and rotates, and the cam promotes the ejector pin at vertical direction upward movement to jack-up vice wedge piece makes progress, thereby can draw close each other in the vice wedge piece upward movement process and press from both sides tight guide rail, realize the braking, just so can be when the main pincers body became invalid vice pincers body performance braking effect, improve 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 cam type fail-safe 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 cam-type failure-prevention elevator safety gear comprises a lifting rod 1, a main gear body 2 and an auxiliary gear body 3, wherein the auxiliary gear body 3 is arranged above the main gear body 2, two main wedges 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 gear 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 and mutually approach to the clamping guide rail 4 are arranged in the auxiliary gear body 3;
it has main holding tank 20 to open in the main voussoir 5, main holding tank 20 opens towards guide rail 4, be equipped with gyro wheel 21 in the main holding tank, main voussoir 5 has still opened and has made main holding tank 20 and the communicating first guiding hole 22 of vice voussoir 6 that vertical direction corresponds, still be equipped with in the main holding tank 20 by gyro wheel 21 drive rotatory cam 29, correspond with main voussoir the bottom of vice voussoir is opened there is second guiding hole 25, be equipped with the top of ejector pin 26 in the second guiding hole, the bottom and the cam 29 surface contact of ejector pin 26, by the lift of the rotatory control ejector pin 26 of cam 29.
Through setting up vice pincers body, when the main pincers body became invalid, the gyro wheel took place relative slip with the guide rail contact, and the rotation of gyro wheel drives the cam and rotates, and the cam promotes the ejector pin at vertical direction upward movement to jack-up vice wedge piece makes progress, thereby can draw close each other in the vice wedge piece upward movement process and press from both sides tight guide rail, realize the braking, just so can be when the main pincers body became invalid vice pincers body performance braking effect, improve factor of 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 bottom of the corresponding main wedge block 5, and when the car falls, the lifting rod 1 moves upwards to push the main wedge block 5 upwards, so that the main wedge block 5 clamps the guide rail 4 for braking.
In order to enable the roller wheel to drive the auxiliary wedge block to brake more timely, the roller wheel comprises a wheel shaft 27 and a rubber wheel 28, the wheel shaft is rotatably connected to two opposite side walls of the main cavity, the cam 29 is sleeved on the wheel shaft, the wheel shafts at two ends of the cam 29 are respectively sleeved with the rubber wheel, and the rubber wheel is in contact with the guide rail to generate larger friction force to drive the cam to rotate.
Because the main chamber has installed the gyro wheel, still need to set up ejector pin 26 these parts too complicated, for more convenient installation these parts, preferably set up the opening in the side of main chamber, so installation will be very convenient, after the installation, can utilize baffle 31 to seal the opening with bolted connection's mode.
The invention also discloses an elevator, and the cam type anti-failure elevator safety tongs adopting the technical scheme are adopted.
When the elevator car braking device is used, the lifting rod 1 is installed, if the car falls, the lifting rod 1 pushes the main wedges 5 to move upwards, the two main wedges 5 are mutually closed under the action of the main guide surface 8 to clamp the guide rail 4, the main clamp body 2 is an instant safety clamp, the car can be immediately braked and stopped, at the moment, the roller hardly rotates, the main wedges 5 ascend to drive the auxiliary wedges 6 to ascend, so that the distance between the auxiliary wedges 6 can be slightly larger than the distance between the main wedges, namely, the auxiliary wedges 6 are not contacted with the guide rail 4 after the main wedges 5 ascend to clamp the guide rail 4, but after the car is not braked and stopped by the main wedges 5, the roller 21 starts to roll to drive the cam 29 to rotate, the rotating cam 29 pushes the ejector rod 26 to move upwards, the auxiliary wedges 6 are forced by the ejector rod 26 to upwards force, so that the auxiliary wedges 6 are mutually closed to clamp the guide rail 4 under the action of the auxiliary guide surface 11, therefore, when the main clamp body 2 fails, the auxiliary clamp body 3 plays a role of stopping the car, 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. Cam type 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 auxiliary clamp body (3) is arranged above the main clamp body (2), 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, main voussoir (5) have still opened and have made main holding tank (20) and vertical direction correspond vice voussoir (6) communicating first guiding hole (22), still be equipped with in main holding tank (20) by gyro wheel (21) drive rotatory cam (29), correspond with main voussoir the bottom of vice voussoir is opened and is had second guiding hole (25), be equipped with the top of ejector pin (26) in the second guiding hole, the bottom and cam (29) surface contact of ejector pin (26), by the lift of the rotatory control ejector pin (26) of cam (29).
2. The cam-type fail-safe elevator safety gear set 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) and the auxiliary clamp body (3) are fixedly connected through bolts.
3. The cam-type fail-safe elevator safety gear set according to claim 1, wherein: 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 cam-type fail-safe elevator safety gear set according to claim 3, wherein: the surface of the main wedge block (5) opposite to the guide rail (4) is a plane.
5. The cam-type fail-safe elevator safety gear set according to claim 1, wherein: 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 cam-type fail-safe elevator safety gear set according to claim 5, wherein: the surface of the auxiliary wedge block (6) opposite to the guide rail (4) is a plane.
7. The cam-type fail-safe elevator safety gear set according to claim 1, wherein: the lifting rod (1) is fixedly connected with the bottom of the corresponding main wedge block (5).
8. The cam-type fail-safe elevator safety gear set according to claim 1, wherein: the roller comprises a wheel shaft (27) and rubber wheels (28), the wheel shaft is rotatably connected to two opposite side walls of the main chamber, the cam (29) is sleeved on the wheel shaft, and the rubber wheels are respectively sleeved on the wheel shafts at two ends of the cam (29).
9. The cam-type fail-safe elevator safety gear set according to claim 1, wherein: the side of the main cavity is open, and the side of the main clamp body is provided with a baffle (31) for closing the opening.
10. An elevator characterized in that: use of the cam-type fail-safe elevator safety gear of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713641.7A CN111776909B (en) | 2020-07-20 | 2020-07-20 | Cam type anti-failure elevator safety tongs and elevator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713641.7A CN111776909B (en) | 2020-07-20 | 2020-07-20 | Cam type anti-failure elevator safety tongs and elevator |
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| Publication Number | Publication Date |
|---|---|
| CN111776909A true CN111776909A (en) | 2020-10-16 |
| CN111776909B CN111776909B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010713641.7A Active CN111776909B (en) | 2020-07-20 | 2020-07-20 | Cam type anti-failure elevator safety tongs and elevator |
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| CN (1) | CN111776909B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496536A (en) * | 1937-07-02 | 1938-12-01 | Waygood Otis Ltd | Improvements in and relating to safety apparatus for elevators |
| KR20000039334A (en) * | 1998-12-12 | 2000-07-05 | 이종수 | Emergency stopping device of an elevator |
| CN203820234U (en) * | 2014-05-15 | 2014-09-10 | 快客电梯有限公司 | Elevator speed limiter |
| CN213112100U (en) * | 2020-07-20 | 2021-05-04 | 台州学院 | Cam type failure-prevention elevator safety tongs and elevator |
-
2020
- 2020-07-20 CN CN202010713641.7A patent/CN111776909B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB496536A (en) * | 1937-07-02 | 1938-12-01 | Waygood Otis Ltd | Improvements in and relating to safety apparatus for elevators |
| KR20000039334A (en) * | 1998-12-12 | 2000-07-05 | 이종수 | Emergency stopping device of an elevator |
| CN203820234U (en) * | 2014-05-15 | 2014-09-10 | 快客电梯有限公司 | Elevator speed limiter |
| CN213112100U (en) * | 2020-07-20 | 2021-05-04 | 台州学院 | Cam type failure-prevention elevator safety tongs and elevator |
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| Publication number | Publication date |
|---|---|
| CN111776909B (en) | 2024-05-03 |
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