CN213112100U - 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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- CN213112100U CN213112100U CN202021465885.XU CN202021465885U CN213112100U CN 213112100 U CN213112100 U CN 213112100U CN 202021465885 U CN202021465885 U CN 202021465885U CN 213112100 U CN213112100 U CN 213112100U
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Abstract
The utility model discloses a cam-type elevator safety tongs that loses efficacy of preventing, including the lifting rod, the main pincers body and the vice pincers body, the internal main voussoir that is equipped with of main pincers, the internal vice voussoir that is equipped with of vice pincers, it has main holding tank to open in the main voussoir, main holding tank opening is towards the guide rail, be equipped with the gyro wheel in the main holding tank, main voussoir has still opened the communicating first guiding hole of vice voussoir 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, it has the second guiding hole to open the bottom of the vice voussoir that corresponds with main voussoir, be equipped with the top of ejector pin in the second guiding hole, the bottom and the cam surface contact of. An elevator adopts above-mentioned cam type to prevent losing effect elevator safety tongs. The utility model 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 utility model relates to a cam-type elevator safety tongs and elevator that prevent becoming invalid.
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 utility model aims at providing a cam-type elevator safety tongs and elevator that prevent becoming invalid can effectively solve current elevator and all have a pair safety tongs, the not enough problem of factor of safety.
In order to solve the technical problem, the utility model discloses a realize through 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 utility model 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 the cam type anti-failure elevator safety gear of the utility model;
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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the cam-type failure-preventing elevator safety gear and the embodiment of an elevator of the present invention, the cam-type failure-preventing 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 wedge blocks 5 moving upward along a vertical direction under the action of the lifting rod 1 and closing to a clamping guide rail 4 are arranged in the main gear body 2, each main wedge block 5 is connected with one lifting rod 1, and two auxiliary wedge blocks 6 moving upward along a vertical direction and closing 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 utility model also discloses an elevator adopts above-mentioned technical scheme's cam-type to prevent losing effect elevator safety tongs.
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 for the specific embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope 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: and a baffle (31) is arranged on the side surface of the main clamp body (2).
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 |
|---|---|---|---|
| CN202021465885.XU CN213112100U (en) | 2020-07-20 | 2020-07-20 | Cam type failure-prevention elevator safety tongs and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021465885.XU CN213112100U (en) | 2020-07-20 | 2020-07-20 | Cam type failure-prevention elevator safety tongs and elevator |
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| Publication Number | Publication Date |
|---|---|
| CN213112100U true CN213112100U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021465885.XU Withdrawn - After Issue CN213112100U (en) | 2020-07-20 | 2020-07-20 | Cam type failure-prevention elevator safety tongs and elevator |
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| Country | Link |
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| CN (1) | CN213112100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111776909A (en) * | 2020-07-20 | 2020-10-16 | 台州学院 | Cam type failure-prevention elevator safety tongs and elevator |
-
2020
- 2020-07-20 CN CN202021465885.XU patent/CN213112100U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111776909A (en) * | 2020-07-20 | 2020-10-16 | 台州学院 | Cam type failure-prevention elevator safety tongs and elevator |
| CN111776909B (en) * | 2020-07-20 | 2024-05-03 | 台州学院 | Cam type anti-failure elevator safety tongs and elevator |
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Granted publication date: 20210504 Effective date of abandoning: 20240503 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210504 Effective date of abandoning: 20240503 |
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| AV01 | Patent right actively abandoned |