Progressive safety tongs with small size and stable performance

Abstract

The utility model relates to the technical field of safety tongs, and discloses a pair of progressive safety tongs with small size and stable performance, which comprises a support body, a guide rail is arranged on the side edge of the support body, an inclined plate is fixedly arranged in the support body, a buffer plate is fixedly arranged on the side edge of the inclined plate, and two groups of side plates are oppositely and fixedly arranged on the other two side edges of the inclined plate; a sliding wedge block is slidably installed in the inclined plate, a wear-resisting block is fixedly installed on the side edge of the sliding wedge block, a connecting plate is fixedly installed on the side edge of the side plate on the inner side of the inclined plate, and a connector is fixedly installed in the connecting plate. According to the device, firstly, the moving stability of the sliding wedge blocks is kept, meanwhile, the sliding wedge block bodies are buffered through the buffer grooves when the two sets of sliding wedge blocks rapidly slide, the pressure of the sliding wedge block bodies is reduced, and the friction force of the friction surfaces of the sliding wedge blocks is released through the multiple sets of wear-resisting blocks in the emergency braking process; and the situation that the average deceleration is too large due to filings generated by friction of tooth surfaces on the sliding wedge blocks is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of safety clamps, in particular to a progressive safety clamp with small volume and stable performance. Background Art

[0002] The safety clamp is a safety protection device for elevators. The elevator safety clamp device is a safety device that stops the car and clamps it on the guide rail when the elevator speed exceeds the speed limit set by the elevator speed limiter or when the suspension rope breaks or loosens under the control of the speed limiter. It provides effective protection for the safe operation of the elevator and is generally installed under the car frame or counterweight frame. During the emergency braking process of the existing safety clamp, the wedge generates a lot of friction, which causes the iron pin to fall off the tooth surface of the wedge, resulting in the inconsistency of the planes of the two sets of wedges, resulting in the problem of large average deceleration. Therefore, it is necessary to improve the existing device to meet actual needs. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a progressive safety clamp with a small volume and stable performance, which has the advantages of firstly maintaining the smooth movement of the sliding wedge block, and at the same time, through the buffer groove, the two groups of sliding wedge blocks slide quickly and provide buffer to the sliding wedge block body at the same time, thereby reducing the pressure on the sliding wedge block body, and through multiple groups of wear-resistant blocks, releasing the friction force of the sliding wedge block friction surface during emergency braking, thereby avoiding the problem of iron cutting caused by the friction of the tooth surface on the sliding wedge block, resulting in a large average deceleration, etc., thereby solving the above-mentioned technical problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a progressive safety clamp with small volume and stable performance, comprising a support body, a guide rail is opened on the side of the support body, and an inclined plate is fixedly installed inside, a buffer plate is fixedly installed on the side of the inclined plate, and two groups of side plates are relatively fixedly installed on the other two sides, a slide plate is connected to the top of the side plate, and a sliding wedge block is slidably installed inside, a wear-resistant block is fixedly installed on the side of the sliding wedge block, a connecting block is fixedly installed on the other side of the inclined plate, a connecting plate is fixedly installed on the side of the inner side plate of the inclined plate, and a connector is fixedly installed inside the connecting plate.

[0007] Preferably, the inclined plates are arranged in two groups opposite to each other and form slideways with the corresponding two groups of side plates respectively.

[0008] Through the above technical solution, the guide rail is first installed and connected with the elevator car, and a buffer slide of a sliding wedge is formed by the inclined plate and the side plates on both sides. When the elevator brakes, the two sets of sliding wedges are driven to slide, thereby buffering the elevator car and protecting the elevator safety.

[0009] Preferably, a group of slide plates are connected to the top end of each group of side plates, and the outer peripheral surface of the slide plates is slidably connected to the side edge of the sliding wedge block.

[0010] Through the above technical solution, when the two groups of sliding wedges slide, the side plates slide synchronously on the outer peripheral surface of the slide plate, thereby increasing the stability of the movement of the sliding wedges.

[0011] Preferably, a plurality of buffer grooves are provided inside the buffer plate.

[0012] Through the above technical solution, when the two groups of sliding wedges slide, the back of the sliding wedges slides inside the buffer plate, and the two groups of sliding wedges slide quickly through the buffer groove while buffering the sliding wedge body, reducing the pressure on the sliding wedge body.

[0013] Preferably, a plurality of groups of wear-resistant blocks are fixedly mounted on the sides of the sliding wedge block.

[0014] Through the above technical solution, when the two groups of sliding wedges slide, the opposite surfaces of the sliding wedges perform emergency braking on the elevator car. The friction force of the friction surfaces of the sliding wedges is released during the emergency braking process through multiple groups of wear-resistant blocks, thereby avoiding iron cutting caused by friction on the tooth surfaces of the sliding wedges, which leads to the problem of large average deceleration.

[0015] Compared with the prior art, the utility model provides a progressive safety clamp with small volume and stable performance, which has the following beneficial effects:

[0016] 1. The utility model first installs and connects the guide rail with the elevator car, and forms a buffer slideway of the sliding wedge through the inclined plate and the side plates on both sides. When the elevator brakes, the two groups of sliding wedges are driven to slide, and the side plates slide synchronously on the outer peripheral surface of the slide plate, which increases the stability of the movement of the sliding wedges. The two groups of sliding wedges slide quickly through the buffer groove and buffer the sliding wedge body at the same time, reducing the pressure of the sliding wedge body, achieving buffering of the elevator car and protecting the elevator safety.

[0017] 2. The utility model performs emergency braking on the elevator car by the opposite surfaces of the sliding wedges when two sets of sliding wedges slide at the same time, and releases the friction force of the friction surfaces of the sliding wedges during emergency braking through multiple sets of wear-resistant blocks, thereby avoiding the problem of iron cutting caused by friction on the tooth surfaces of the sliding wedges, which leads to a large average deceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the structural safety clamp of the utility model;

[0019] Figure 2 This is a front view schematic diagram of the structural safety clamp of the utility model;

[0020] Figure 3 It is a partial enlarged schematic diagram of the structural safety clamp of the utility model;

[0021] Figure 4 It is a partial internal schematic diagram of the structural safety clamp of the utility model.

[0022] Among them: 1. Support body; 2. Guide rail; 3. Inclined plate; 4. Buffer plate; 5. Side plate; 6. Slide plate; 7. Sliding wedge block; 8. Wear-resistant block; 9. Connecting block; 10. Connecting plate; 11. Connector. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 A progressive safety clamp with small volume and stable performance comprises a support body 1, a guide rail 2 is provided on the side of the support body 1, and an inclined plate 3 is fixedly installed inside, a buffer plate 4 is fixedly installed on the side of the inclined plate 3, and two sets of side plates 5 are relatively fixedly installed on the other two sides, a slide plate 6 is connected to the top of the side plate 5, and a sliding wedge block 7 is slidably installed inside, a wear-resistant block 8 is fixedly installed on the side of the sliding wedge block 7, a connecting block 9 is fixedly installed on the other side of the inclined plate 3, a connecting plate 10 is fixedly installed on the side of the side plate 5 inside the inclined plate 3, and a connector 11 is fixedly installed inside the connecting plate 10.

[0025] Specifically, two groups of inclined plates 3 are arranged opposite to each other, and slideways are formed with the corresponding two groups of side plates 5. The advantage is that the guide rail 2 is first installed and connected with the elevator car, and a buffer slideway of the sliding wedge block 7 is formed by the inclined plate 3 and the side plates 5 on both sides. When the elevator brakes, the two groups of sliding wedge blocks 7 are driven to slide, thereby buffering the elevator car and protecting the elevator safety.

[0026] Specifically, each set of side plates 5 is connected to a set of slide plates 6 at the top, and the outer circumference of the slide plates 6 is slidably connected to the side of the sliding wedge block 7. The advantage is that when the two sets of sliding wedge blocks 7 slide, the side plates 5 slide synchronously on the outer circumference of the slide plates 6, thereby increasing the stability of the movement of the sliding wedge blocks 7.

[0027] Specifically, a plurality of buffer grooves are provided inside the buffer plate 4. The advantage is that when the two sets of sliding wedges 7 slide, the back of the sliding wedge 7 slides inside the buffer plate 4, and the two sets of sliding wedges 7 slide quickly through the buffer grooves while buffering the sliding wedge 7 body, thereby reducing the pressure on the sliding wedge 7 body.

[0028] Specifically, multiple groups of wear-resistant blocks 8 are fixedly installed on the side of the sliding wedge block 7. The advantage is that when the two groups of sliding wedge blocks 7 slide, the opposite surface of the sliding wedge block 7 performs emergency braking on the elevator car, and the friction force of the friction surface of the sliding wedge block 7 is released by the multiple groups of wear-resistant blocks 8 during the emergency braking process, thereby avoiding the problem of iron cutting caused by the friction of the tooth surface on the sliding wedge block 7, which leads to a large average deceleration.

[0029] When in use, first install and connect the guide rail 2 with the elevator car, and form a buffer slideway of the sliding wedge 7 through the inclined plate 3 and the side plates 5 on both sides. When the elevator brakes, the two groups of sliding wedges 7 are driven to slide, and the side plates 5 slide synchronously on the outer peripheral surface of the slide plate 6, which increases the stability of the movement of the sliding wedge 7. The two groups of sliding wedges 7 slide quickly through the buffer groove and buffer the sliding wedge 7 body at the same time, reducing the pressure on the sliding wedge 7 body, achieving buffering of the elevator car and protecting the elevator safety. When the two groups of sliding wedges 7 slide, the relative surfaces of the sliding wedges 7 perform emergency braking on the elevator car. The friction force of the friction surface of the sliding wedge 7 is released during the emergency braking process through multiple groups of wear-resistant blocks 8, so as to avoid iron cutting caused by the friction of the tooth surface on the sliding wedge 7, which leads to the problem of large average deceleration.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A progressive safety clamp with small size and stable performance, comprising a support body (1), characterized in that: The support body (1) is provided with a guide rail (2) on the side, and an inclined plate (3) is fixedly installed inside, a buffer plate (4) is fixedly installed on the side of the inclined plate (3), and two sets of side plates (5) are relatively fixedly installed on the other two sides, a slide plate (6) is connected to the top of the side plate (5), and a sliding wedge block (7) is slidably installed inside, a wear-resistant block (8) is fixedly installed on the side of the sliding wedge block (7), a connecting block (9) is fixedly installed on the other side of the inclined plate (3), a connecting plate (10) is fixedly installed on the side of the inner side plate (5) of the inclined plate (3), and a connector (11) is fixedly installed inside the connecting plate (10).

2. A progressive safety gear with small volume and stable performance according to claim 1, characterized in that: The inclined plates (3) are arranged in two groups opposite to each other and form slideways with the corresponding two groups of side plates (5).

3. A progressive safety gear with small volume and stable performance according to claim 1, characterized in that: The top end of each group of side plates (5) is connected to a group of slide plates (6), and the outer peripheral surface of the slide plates (6) is slidably connected to the side edge of the sliding wedge block (7).

4. A progressive safety gear with small volume and stable performance according to claim 1, characterized in that: The buffer plate (4) has multiple groups of buffer grooves disposed inside.

5. The progressive safety gear with small volume and stable performance according to claim 1 is characterized by: Multiple groups of wear-resistant blocks (8) are fixedly mounted on the side of the sliding wedge block (7).

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