CN216403484U - Elevator anti-falling safety tongs - Google Patents
Elevator anti-falling safety tongs Download PDFInfo
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- CN216403484U CN216403484U CN202122152911.4U CN202122152911U CN216403484U CN 216403484 U CN216403484 U CN 216403484U CN 202122152911 U CN202122152911 U CN 202122152911U CN 216403484 U CN216403484 U CN 216403484U
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- wedge block
- guide rail
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Abstract
The utility model discloses an elevator anti-falling safety gear, which comprises a gear seat, two fixed wedge blocks symmetrically arranged about a through groove, mounting and adjusting mechanisms corresponding to the fixed wedge blocks and sliding wedge blocks corresponding to the fixed wedge blocks one by one, wherein the gear seat is provided with a through groove for an elevator guide rail to pass through; the mounting and adjusting mechanism is suitable for mounting the fixed wedge block on the clamp seat and adjusting the distance between the fixed wedge block and the through groove by operating the fixed wedge block; the distal channel side of the sliding wedge and the proximal channel side of the corresponding fixed wedge form an inclined surface fit adapted to move the sliding wedge towards the channel during lifting of the sliding wedge by being driven so that the proximal channel sides of the two sliding wedges grip the elevator guide rails. The utility model can adjust the distance between the two fixed wedge blocks and the elevator guide rail, thereby ensuring the consistent distance between the two sliding wedge blocks and the elevator guide rail and having good braking effect.
Description
Technical Field
The utility model relates to an elevator anti-falling safety gear.
Background
The elevator safety tongs are a safety device which emergently stops a car and clamps the car on an elevator guide rail under the operation of a speed limiter when the speed of the elevator exceeds the set limit speed of the elevator speed limiter or a suspension rope is broken and loosened, the safety tongs provide effective protection effect for the safe operation of the elevator, the safety tongs are generally arranged on a car frame or a counterweight frame, the position of a fixed wedge block of the conventional elevator safety tongs is fixed, the position of the fixed wedge block cannot be adjusted in the later period, the high requirements on the processing precision and the installation precision of the fixed wedge block are improved, and if the distances between two fixed wedge blocks and the elevator guide rail are unequal, the distances between two sliding wedge blocks and the elevator guide rail are unequal, so that the two sliding wedge blocks cannot simultaneously contact the elevator guide rail, the braking effect is poor, and the risk of incapability of stopping exists.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides an elevator anti-falling safety tongs which can adjust the distance between two fixed wedge blocks and an elevator guide rail, further ensure the consistent distance between two sliding wedge blocks and the elevator guide rail and have good braking effect.
In order to solve the technical problems, the technical scheme of the utility model is as follows: an elevator anti-falling safety gear, comprising:
the clamp seat is provided with a through groove for the elevator guide rail to pass through;
two fixed wedges symmetrically arranged about the through slot;
the mounting and adjusting mechanism corresponds to the fixed wedge block and is suitable for mounting the fixed wedge block on the clamp seat and adjusting the distance between the fixed wedge block and the through groove by operating the mounting and adjusting mechanism;
and the sliding wedges correspond to the fixed wedges one by one, and inclined surface matching is formed between the far through groove side of each sliding wedge and the near through groove side of the corresponding fixed wedge, and the inclined surface matching is suitable for enabling the sliding wedges to move towards the through grooves in the process that the sliding wedges are driven to ascend so that the near through groove sides of the two sliding wedges clamp the elevator guide rails.
Further provided is a concrete structure of installation and adjustment mechanism, installation and adjustment mechanism includes two at least bolt and nut subassemblies, the bolt and nut subassembly includes:
the bolt is fixed on the far through groove side of the fixed wedge block, and the head of the bolt penetrates through the clamp seat;
and two nuts, one of which is screwed on the part of the bolt not extending out of the clamp seat, and the other of which is screwed on the part of the bolt extending out of the clamp seat.
The utility model provides another kind of installation and adjustment mechanism's concrete structure, installation and adjustment mechanism include two at least adjusting screw, adjusting screw threaded connection in the pincers seat, its head is suitable for and corresponding fixed voussoir butt, and the hand wheel is installed to the afterbody. A limiting frame is fixed on the far through groove side of the fixed wedge block, and the head of the adjusting screw rod extends into the limiting frame; and a limiting block which is suitable for abutting against the inner wall of the far through groove side of the limiting frame so as to limit the moving distance of the fixed wedge block towards the through groove when the hand wheel is not rotated is fixed at the head of the adjusting screw rod.
Furthermore, a rubber pad is arranged on the side of the sliding wedge close to the through groove.
And further, in order to increase the friction force between the rubber pad and the elevator guide rail, anti-skidding teeth are arranged on the side, close to the through groove, of the rubber pad.
Further, an external lifting transmission mechanism is connected with a sliding wedge conveniently, and an operating rod is fixed at the upper end of the sliding wedge.
In order to further reduce the friction force between the two inclined planes forming the inclined plane matching, a plurality of guide balls are arranged between the two inclined planes forming the inclined plane matching.
Furthermore, a ball guide rail extending along the inclined direction of the inclined surface is arranged on the inclined surface of the sliding wedge block, the guide ball is arranged in the ball guide rail and can roll in the ball guide rail,
the depth of the ball guide rail is smaller than the diameter of the guide ball, and the guide ball abuts against the inclined surface of the fixed wedge block.
Further to be able to act as a buffer to prevent the elevator from stopping suddenly, the rubber pad is mounted on the sliding wedge by means of a plurality of springs.
After the technical scheme is adopted, the distance between the fixed wedge blocks and the elevator guide rail can be adjusted by operating the mounting and adjusting mechanism, so that the equal distance between the two sliding wedge blocks and the elevator guide rail is ensured, the speed limiter lifts the sliding wedge blocks through the lifting transmission mechanism, the two sliding wedge blocks move towards the elevator guide rail under the action of the inclined plane matching and clamp the elevator guide rail together, and the requirements on the processing precision and the mounting precision of the fixed wedge blocks are also greatly reduced as the distance between the two sliding wedge blocks and the elevator guide rail is equal and the two sliding wedge blocks are contacted with the elevator guide rail simultaneously, so that the braking effect is good; the mounting and adjusting mechanism comprises at least two bolt and nut assemblies or at least two adjusting screws, so that the stability of the fixed wedge block when the fixed wedge block is fixed on the clamp seat is effectively ensured.
Drawings
FIG. 1 is a first structural schematic diagram of an elevator anti-falling safety gear of the utility model;
FIG. 2 is a schematic diagram of a second structure of the elevator anti-falling safety gear of the utility model;
fig. 3 is a third structural schematic diagram of the elevator anti-falling safety gear of the utility model.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1, 2 and 3, an elevator anti-falling safety gear comprises:
the clamp comprises a clamp seat 1, wherein the clamp seat 1 is provided with a through groove for an elevator guide rail 10 to pass through;
two fixed wedges 2 symmetrically arranged about the through slot;
the mounting and adjusting mechanism corresponds to the fixed wedge block 2 and is suitable for mounting the fixed wedge block 2 on the caliper seat 1 and adjusting the distance between the fixed wedge block 2 and the through groove by operating the mounting and adjusting mechanism;
and the sliding wedges 3 correspond to the fixed wedges 2 one by one, and an inclined surface fit is formed between the far groove side of each sliding wedge 3 and the near groove side of the corresponding fixed wedge 2, and the inclined surface fit is suitable for enabling the sliding wedges 3 to move towards the through grooves in the process that the sliding wedges 3 are driven to ascend so that the near groove sides of the two sliding wedges 3 clamp the elevator guide rails 10.
Specifically, the distance between the fixed wedge block 2 and the elevator guide rail 10 can be adjusted by operating the installation and adjustment mechanism, so that the distance between the two sliding wedge blocks 3 and the elevator guide rail 10 is equal, the speed limiter lifts the sliding wedge block 3 through the lifting transmission mechanism, the two sliding wedge blocks 3 move towards the elevator guide rail 10 under the action of inclined plane matching and clamp the elevator guide rail 10 together, and because the distance between the two sliding wedge blocks 3 and the elevator guide rail 10 is equal, the two sliding wedge blocks 3 are simultaneously contacted with the elevator guide rail 10, the braking effect is good, and the requirements on the machining precision and the installation precision of the fixed wedge block 2 are greatly reduced.
In this embodiment, the mounting and adjusting mechanism can adopt various structures, two of which are listed:
first, as shown in fig. 1 and 3, the mounting and adjusting mechanism includes at least two bolt-and-nut assemblies, the bolt-and-nut assemblies including:
a bolt 41a fixed on the far through groove side of the fixed wedge 2, wherein the head of the bolt 41a passes through the caliper seat 1;
two nuts 42a, one 42a being screwed on the portion of the bolt 41a not protruding out of the caliper housing 1, and the other 42a being screwed on the portion of the bolt 41a protruding out of the caliper housing 1.
A gasket is arranged between the nut 42a and the clamp seat 1. The distance between the fixed wedge 2 and the through groove can be adjusted by loosening the corresponding nuts 42a, and the two nuts 42a are screwed, so that the two nuts 42a are tightly abutted against the caliper seat 1, and the fixation of the position of the fixed wedge 2 is completed.
Secondly, as shown in fig. 2, the mounting and adjusting mechanism includes at least two adjusting screws 41b, the adjusting screws 41b are screwed on the caliper seat 1, the head portions of the adjusting screws are suitable for abutting against the corresponding fixed wedges 2, and the tail portions of the adjusting screws are provided with hand wheels 42 b.
A limiting frame 43b is fixed on the far through groove side of the fixed wedge block 2, and the head of the adjusting screw rod 41b extends into the limiting frame 43 b; the head of the adjusting screw 41b is fixed with a limiting block 44b adapted to abut against the inner wall of the limiting frame 43b on the far slot side to limit the distance the fixed wedge 2 moves toward the through slot when the hand wheel 42b is not rotated.
Specifically, the mounting and adjusting mechanism of the present invention comprises at least two bolt and nut assemblies or at least two adjusting screws 41b, which effectively ensures the stability of the fixing wedge 2 when being fixed on the caliper seat 1.
As shown in fig. 1, 2 and 3, a rubber pad 5 is attached to the proximal groove side of the slide wedge 3.
As shown in fig. 1, 2 and 3, in order to increase the friction force between the rubber pad 5 and the elevator guide rail 10, anti-slip teeth are provided on the side of the rubber pad 5 near the through groove.
As shown in fig. 1, 2 and 3, in order to facilitate the connection of an external pulling transmission mechanism with the sliding wedge 3, an operating rod 6 is fixed at the upper end of the sliding wedge 3.
In the present embodiment, the governor pulls the lever 6 by the pulling transmission mechanism, and the sliding wedge 3 is thereby lifted.
As shown in fig. 1, 2 and 3, a plurality of guide balls 7 are provided between the inclined surfaces forming the inclined surface engagement in order to reduce the frictional force between the inclined surfaces forming the inclined surface engagement.
As shown in fig. 1, 2 and 3, the inclined surface of the slide wedge 3 is provided with a ball guide extending in the direction of inclination of the inclined surface, the guide ball 7 is provided in the ball guide and is rollable in the ball guide,
the depth of the ball guide rail is smaller than the diameter of the guide ball 7, and the guide ball 7 is tightly propped against the inclined surface of the fixed wedge block 2.
As shown in fig. 3, the rubber pad 5 is mounted on the sliding wedge 3 by a plurality of springs 8 in order to provide a buffering action to prevent the elevator from stopping suddenly. The arrangement of a plurality of springs 8 serves the purpose of gently braking the elevator.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An elevator anti-falling safety gear is characterized in that,
it includes:
the clamp comprises a clamp seat (1), wherein the clamp seat (1) is provided with a through groove for an elevator guide rail (10) to penetrate through;
two fixed wedges (2) symmetrically arranged about the through slot;
the mounting and adjusting mechanism corresponds to the fixed wedge block (2), is suitable for mounting the fixed wedge block (2) on the clamp seat (1) and is operated to adjust the distance between the fixed wedge block (2) and the through groove;
the sliding wedges (3) correspond to the fixed wedges (2) one by one, and inclined surface matching is formed between the far through groove side of each sliding wedge (3) and the near through groove side of the corresponding fixed wedge (2), and the inclined surface matching is suitable for enabling the sliding wedges (3) to move towards the through grooves in the process that the sliding wedges (3) are driven to ascend, so that the near through groove sides of the two sliding wedges (3) clamp the elevator guide rails (10); wherein the content of the first and second substances,
a rubber pad (5) is arranged on the side of the sliding wedge block (3) close to the through groove;
anti-skid teeth suitable for increasing the friction force between the rubber pad (5) and the elevator guide rail (10) are arranged on the side, close to the through groove, of the rubber pad (5);
an operating rod (6) is fixed at the upper end of the sliding wedge block (3);
a plurality of guide balls (7) which are suitable for reducing the friction force between the two inclined planes forming the inclined plane matching are arranged between the two inclined planes forming the inclined plane matching;
a ball guide rail extending along the inclined direction of the inclined plane is arranged on the inclined plane of the sliding wedge block (3), the guide ball (7) is arranged in the ball guide rail and can roll in the ball guide rail, the depth of the ball guide rail is less than the diameter of the guide ball (7), and the guide ball (7) is abutted against the inclined plane of the fixed wedge block (2);
the rubber pad (5) is mounted on the sliding wedge (3) by a plurality of springs (8).
2. The elevator anti-falling safety gear according to claim 1,
the mounting and adjusting mechanism includes at least two bolt-nut assemblies, the bolt-nut assemblies include:
a bolt (41a) fixed on the far through groove side of the fixed wedge block (2), wherein the head of the bolt (41a) penetrates through the clamp seat (1);
and two nuts (42a), wherein one nut (42a) is screwed on the part of the bolt (41a) which does not extend out of the caliper holder (1), and the other nut (42a) is screwed on the part of the bolt (41a) which extends out of the caliper holder (1).
3. The elevator anti-falling safety gear according to claim 1,
the mounting and adjusting mechanism comprises at least two adjusting screws (41b), the adjusting screws (41b) are in threaded connection with the caliper seat (1), the heads of the adjusting screws are suitable for being abutted to corresponding fixed wedges (2), and hand wheels (42b) are mounted at the tails of the adjusting screws.
4. The elevator anti-falling safety gear according to claim 3,
a limiting frame (43b) is fixed on the far groove side of the fixed wedge block (2), and the head of the adjusting screw rod (41b) extends into the limiting frame (43 b);
the head of the adjusting screw (41b) is fixed with a limiting block (44b) which is suitable for abutting against the inner wall of the limiting frame (43b) at the far through groove side so as to limit the moving distance of the fixed wedge block (2) towards the through groove when the hand wheel (42b) is not rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122152911.4U CN216403484U (en) | 2021-09-07 | 2021-09-07 | Elevator anti-falling safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122152911.4U CN216403484U (en) | 2021-09-07 | 2021-09-07 | Elevator anti-falling safety tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216403484U true CN216403484U (en) | 2022-04-29 |
Family
ID=81292472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122152911.4U Active CN216403484U (en) | 2021-09-07 | 2021-09-07 | Elevator anti-falling safety tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216403484U (en) |
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2021
- 2021-09-07 CN CN202122152911.4U patent/CN216403484U/en active Active
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