Safety tongs for elevator braking

Abstract

The utility model relates to the technical field of safety tongs, in particular to a pair of safety tongs for elevator braking, which comprises a shell I, cavities are formed in the two sides of the shell I, movable plates are arranged in the cavities in a sliding manner, brake blocks are fixedly arranged on the adjacent sides of the movable plates, an air cylinder is fixedly embedded in the rear side of the shell I, and the air cylinder is fixedly embedded in the shell I; the output end of the air cylinder extends to the rear portion of the first shell and is fixedly connected with a second shell, pushing blocks are fixedly arranged on the back-to-back sides of the movable plates, the other sides of the pushing blocks extend out of the first shell, and a plurality of springs are symmetrically and fixedly arranged on the back-to-back sides of the movable plates in an array mode. Sliding rods are symmetrically inserted in the moving plates in a penetrating and sliding mode, the two ends of each sliding rod are fixedly connected with the inner wall of the adjacent side of the cavity, driving elements of the device can be reduced, the production cost of the device is reduced, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to a safety clamp for elevator braking, belonging to the technical field of safety clamps. 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 urgently and clamps it on the guide rail when the elevator speed exceeds the limit (or rated) speed set by the elevator speed limiter, or when the suspension rope breaks or loosens.

[0003] According to the announcement number CN213202003U, a bidirectional brake safety clamp for an elevator is disclosed. The key points of its technical solution are that it includes a box body, and brake assemblies are respectively arranged on the inner walls on both sides of the box body. The upper brake part is used to brake the car that moves down too fast, and the lower brake part is used to brake the car that moves up too fast. The safety clamp can penetrate into the guide rail through the first piercing part on the first wedge block and the second piercing part on the second wedge block. The first rubber and the second rubber are used to prevent the operator from contacting the first piercing part and the second piercing part. During emergency braking, the first sliding plate slides into the third slide groove to ensure that the first piercing part can smoothly penetrate the guide rail after penetrating the first rubber. During emergency braking, the second sliding plate slides into the fourth slide groove to ensure that the second piercing part can smoothly penetrate the guide rail after penetrating the second rubber. When the above device is in use, multiple telescopic cylinders need to be arranged, which makes the production cost of the device relatively high. Utility Model Content

[0004] The purpose of the utility model is to provide a safety clamp for elevator braking. The utility model can reduce the driving elements of the device, reduce the production cost of the device, and improve the practicability of the device, so as to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A safety clamp for elevator braking, comprising a shell one, cavities are opened inside both sides of the shell one, movable plates are slidably arranged in the cavities, brake blocks are fixedly arranged on adjacent sides of the movable plates, a cylinder is fixedly embedded on the rear side of the shell one, the output end of the cylinder extends to the rear of the shell one and is fixedly connected to a shell two, a push block is fixedly arranged on the opposite side of the movable plates, the other side of the push block extends to the outside of the shell one, and a plurality of springs are fixedly arranged in a symmetrical array on the opposite side of the movable plates.

[0007] Furthermore, sliding rods are symmetrically penetrated and slidably embedded on the movable plates, and both ends of the sliding rods are fixedly connected to the inner wall of one side adjacent to the cavity.

[0008] Furthermore, the brake block is provided with anti-skid grooves on one side away from the adjacent movable plate.

[0009] Furthermore, the front side of the second shell and the side of the pushing block away from the moving plate are both provided with matching inclined portions.

[0010] Furthermore, a plurality of slots are symmetrically arranged in an array on the rear side of the shell one, and insertion rods are slidably arranged in the slots. The rear ends of the insertion rods extend outside the shell one and are fixedly connected to the inner wall of the shell two.

[0011] Furthermore, the number of the insertion rods is 4-8, and the insertion rods are symmetrically distributed on both sides of the cylinder.

[0012] Furthermore, sliding blocks are symmetrically fixed on both sides of the shell one, and sliding grooves for matching with the sliding blocks are symmetrically opened on the inner walls on both sides of the shell two.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is provided with a shell body two and a pushing block. When in use, the shell body two is driven to move forward by the cylinder, so that the shell body two squeezes the pushing block, and the pushing block pushes the brake block to move through the moving plate, so that the guide rail is clamped and fixed by the brake block, thereby achieving a braking effect. When the moving plate moves, the sliding rod can support the moving plate, thereby ensuring the stability of the moving plate and the brake block when moving. The utility model can reduce the driving elements of the device, reduce the production cost of the device, and improve the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a front view of a safety clamp for elevator braking according to the utility model;

[0017] Figure 2 It is a top view of a safety clamp for elevator braking according to the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a safety clamp for elevator braking in the utility model;

[0019] Figure 4 It is a rear view of a housing 1 of a safety clamp for elevator braking according to the utility model;

[0020] Numbers in the figure: 1, shell one; 2, cavity; 3, moving plate; 4, brake block; 5, cylinder; 6, shell two; 7, push block; 8, spring; 9, slide rod; 10, slot; 11, plug rod; 12, slider; 13, slide groove. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0023] A safety clamp for elevator braking, comprising a shell 1, cavities 2 are opened inside both sides of the shell 1, movable plates 3 are slidably arranged in the cavities 2, brake blocks 4 are fixedly arranged on adjacent sides of the movable plates 3, a cylinder 5 is fixedly embedded on the rear side of the shell 1, the output end of the cylinder 5 extends to the rear of the shell 1 and is fixedly connected to a shell 2 6, a push block 7 is fixedly arranged on the opposite side of the movable plates 3, the other side of the push block 7 extends to the outside of the shell 1, and a plurality of springs 8 are fixedly arranged in a symmetrical array on the opposite side of the movable plates 3.

[0024] Specifically, Figure 1-Figure 4 As shown, sliding rods 9 are symmetrically inserted and slidably embedded on the movable plate 3, and both ends of the sliding rods 9 are fixedly connected to the inner wall of one side adjacent to the cavity 2. The brake block 4 is provided with anti-slip grooves on the side away from the adjacent movable plate 3. When the movable plate 3 moves, the sliding rods 9 can support the movable plate 3.

[0025] Specifically, Figure 1-Figure 4 As shown, the front side of the shell 2 6 and the side of the pushing block 7 away from the moving plate 3 are provided with matching inclined portions, and a plurality of slots 10 are symmetrically arranged in an array on the rear side of the shell 1, and plug rods 11 are slidably arranged in the slots 10, and the rear ends of the plug rods 11 extend to the outside of the shell 1 and are fixedly connected to the inner wall of the shell 2 6. The number of the plug rods 11 is 4-8, and the plug rods 11 are symmetrically distributed on both sides of the cylinder 5. The shell 2 6 is moved by the cylinder 5, so that the shell 2 6 drives the plug rod 11 to move in the slot 10, and the shell 2 6 can be supported by the plug rod 11 and the slot 10.

[0026] Example 2 Please refer to Figure 1-Figure 4 The difference between this embodiment and embodiment 1 is that: sliders 12 are symmetrically fixed on both sides of the shell 1, and slide grooves 13 for matching with the sliders 12 are symmetrically opened on the inner walls of both sides of the shell 2 6. When the shell 2 6 moves, the sliders 12 will move relatively in the slide grooves 13, and the sliders 12 can play a role of limiting support for the shell 2 6.

[0027] The working principle of the utility model is as follows: when in use, the cylinder 5 drives the shell 2 6 to move forward, so that the shell 2 6 squeezes the pushing block 7, and the pushing block 7 pushes the brake block 7 to move through the moving plate 3, so that the guide rail is clamped and fixed by the brake block 7, thereby achieving a braking effect. When the moving plate 3 moves, the sliding rod 9 can support the moving plate 3, thereby ensuring the stability of the moving plate 3 and the brake block 7 when moving. When the shell 2 6 moves, the shell 2 6 drives the insertion rod 11 to move in the slot 10, and the insertion rod 11 and the slot 10 can support the shell 2 6. At the same time, the slider 12 will move relatively in the slide groove 13, and the slider 12 can provide a limiting support for the shell 2 6.

[0028] Although the 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 safety clamp for elevator braking, comprising a housing (1), characterized in that: Both sides of the shell (1) are provided with cavities (2), and movable plates (3) are slidably arranged in the cavities (2). A brake block (4) is fixedly arranged on the adjacent side of the movable plates (3). A cylinder (5) is fixedly embedded on the rear side of the shell (1), and the output end of the cylinder (5) extends to the rear of the shell (1) and is fixedly connected to the shell (6). A push block (7) is fixedly arranged on the opposite side of the movable plates (3), and the other side of the push block (7) extends to the outside of the shell (1). A plurality of springs (8) are fixedly arranged in a symmetrical array on the opposite side of the movable plates (3).

2. A safety clamp for elevator braking according to claim 1, characterized in that: The movable plate (3) is symmetrically penetrated and slidably embedded with a sliding rod (9), and both ends of the sliding rod (9) are fixedly connected to the inner wall of one side adjacent to the cavity (2).

3. A safety clamp for elevator braking according to claim 1, characterized in that: The brake block (4) is provided with anti-skid grooves on one side away from the adjacent movable plate (3).

4. A safety clamp for elevator braking according to claim 1, characterized in that: The front side of the second shell (6) and the side of the pushing block (7) away from the moving plate (3) are both provided with matching inclined parts.

5. The safety clamp for elevator braking according to claim 1, characterized in that: The rear side of the shell one (1) is provided with a plurality of slots (10) in a symmetrical array, and insertion rods (11) are slidably arranged in the slots (10), and the rear ends of the insertion rods (11) extend outside the shell one (1) and are fixedly connected to the inner wall of the shell two (6).

6. A safety clamp for elevator braking according to claim 5, characterized in that: The number of the insertion rods (11) is 4-8, and the insertion rods (11) are symmetrically distributed on both sides of the cylinder (5).

7. The safety clamp for elevator braking according to claim 1, characterized in that: Slide blocks (12) are symmetrically fixed on both sides of the shell one (1), and sliding grooves (13) for matching with the slide blocks (12) are symmetrically opened on the inner walls on both sides of the shell two (6).

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