Pneumatic self-locking clamp for mast

Abstract

The utility model relates to the technical field of pneumatic actuators, and discloses a pneumatic self-locking clamping device for a mast, which comprises a shell and a main body structure, the main body structure is arranged in the shell and comprises an air pipe joint, the air pipe joint is connected with a piston through an air pipe, the bottom of the piston is fixedly connected with a wedge block, and the wedge block is fixedly connected with the shell. A pneumatic electromagnetic valve is powered on, an air pipe connector is ventilated to drive two pistons to move downwards, the pistons jack wedge blocks to move downwards, exhaust screws are arranged for exhausting, the wedge blocks drive the two sides of a ball head jack prop to inwards press a wear-resisting block composite plate, and therefore the nylon wear-resisting block and a mast are clamped, friction is increased, and the self-locking effect is achieved. After the mast reaches a specific position, the mast is prevented from moving or displacing, the pneumatic electromagnetic valve is powered off for exhausting, the return spring drives the wedge block to return, compression of the ball head jacking column on the abrasion-resistant block composite plate is relieved, the nylon abrasion-resistant block and the mast only conduct common friction guiding at the moment, and therefore the mast can ascend and descend stably without shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic actuators, in particular to a pneumatic self-locking clamp for a mast. Background Art

[0002] Pneumatic self-locking clamps are widely used in various industries such as military, police, civil, fire protection, and communications. They play an important role in occasions that require high-precision positioning and stable support. Pneumatic self-locking clamps for masts are mechanical tools that add a self-locking device to the mast. They are mainly used to enhance the fixed rigidity of the mast in the working position, reduce the reverse damage of the impact force to the drive motor, and ensure the work quality such as positioning accuracy.

[0003] Therefore, there is an urgent need for a pneumatic self-locking clamp for mast lifting, which can self-lock the mast when it is in the open or closed state, thereby preventing the mast from moving or displacing after reaching a specific position. Utility Model Content

[0004] The utility model aims to provide a pneumatic self-locking clamp for a mast to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a pneumatic self-locking clamp for a mast, comprising a shell and a main body structure, wherein the main body structure is arranged inside the shell;

[0006] The main structure includes an air pipe joint, which is connected to a piston through an air pipe. A wedge block is fixedly connected to the bottom of the piston. The inclined end of the wedge block is abutted against a ball head top column. A wear-resistant block composite plate is provided at one end of the ball head top column away from the wedge block.

[0007] Preferably, a piston spring is sleeved on the outer surface of the piston, and a plug is fixedly connected to the top of the piston spring.

[0008] Preferably, a wedge block guide plug is provided at one end of the wedge block away from the ball head top column.

[0009] Preferably, a return spring is provided at the bottom of the wedge block, and an exhaust screw is provided at one end of the return spring away from the wedge block.

[0010] Preferably, the plug, the wedge-shaped block guide plug and the top of the exhaust screw all penetrate the inner wall of the shell and extend to the outside.

[0011] Preferably, nylon wear-resistant blocks are provided on the outer surface of the wear-resistant block composite plate.

[0012] Compared with the prior art, the beneficial effect achieved by the utility model is as follows: by energizing the pneumatic solenoid valve, the air pipe joint is ventilated to drive the two pistons to move downward, and the piston pushes the wedge block to move downward. The exhaust is performed by setting an exhaust screw, so that the wedge block drives the two sides of the ball head top column to press the wear-resistant block composite plate inward, so that the nylon wear-resistant block and the mast are clamped to increase the friction to achieve a self-locking effect, so that after the mast reaches a specific position, it is prevented from moving or displacing. By de-energizing the pneumatic solenoid valve to exhaust air, the return spring drives the wedge block to return, and the pressure of the ball head top column on the wear-resistant block composite plate is released. At this time, the nylon wear-resistant block and the mast only serve as ordinary friction guides, so that the mast can be raised and lowered smoothly without shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the internal structure of the main body of the utility model;

[0014] Figure 2 This is a schematic diagram of the housing structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 4 For the utility model Figure 3 A is an enlarged schematic diagram of the structure.

[0017] Among them: 1. Shell; 2. Main structure; 201. Air pipe joint; 202. Piston; 203. Wedge block; 204. Ball head top column; 205. Wear-resistant block composite plate; 206. Piston spring; 207. Plug; 208. Wedge block guide plug; 209. Return spring; 210. Exhaust screw; 211. Nylon wear-resistant block. DETAILED DESCRIPTION

[0018] 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.

[0019] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0020] The specific implementation method is as follows Figure 1-4 As shown, a pneumatic self-locking clamp for a mast comprises a housing 1 and a main structure 2, wherein the main structure 2 is arranged inside the housing 1;

[0021] The main structure 2 includes an air pipe joint 201, which is connected to a piston 202 through an air pipe. A wedge block 203 is fixedly connected to the bottom of the piston 202. The inclined end of the wedge block 203 abuts against a ball head top column 204. A wear-resistant block composite plate 205 is provided at one end of the ball head top column 204 away from the wedge block 203.

[0022] A piston spring 206 is sleeved on the outer surface of the piston 202 , and a plug 207 is fixedly connected to the top of the piston spring 206 .

[0023] A wedge block guide plug 208 is provided at one end of the wedge block 203 away from the ball head top column 204 .

[0024] A return spring 209 is disposed at the bottom of the wedge block 203 , and an exhaust screw 210 is disposed at one end of the return spring 209 away from the wedge block 203 .

[0025] The plug 207, the wedge-shaped guide plug 208 and the top of the exhaust screw 210 all penetrate the inner wall of the shell 1 and extend to the outside.

[0026] The outer surface of the wear-resistant block composite plate 205 is provided with nylon wear-resistant blocks 211 .

[0027] Through the above technical scheme, by energizing the pneumatic solenoid valve, the air pipe joint 201 is ventilated to drive the two pistons 202 to move downward, and the piston 202 pushes the wedge block 203 to move downward. The exhaust screw 210 is set to exhaust air, so that the wedge block 203 drives the two sides of the ball head top column 204 to press the wear-resistant block composite plate 205 inward, so that the nylon wear-resistant block 211 and the mast are clamped to increase friction to achieve a self-locking effect. By de-energizing the pneumatic solenoid valve to exhaust air, the return spring 209 drives the wedge block 203 to return, and the pressure of the ball head top column 204 on the wear-resistant block composite plate 205 is released. At this time, the nylon wear-resistant block 211 and the mast only act as ordinary friction guides, so that the mast can be raised and lowered smoothly without shaking.

[0028] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic self-locking clamp for a mast, comprising a housing (1) and a main structure (2), characterized in that: A main structure (2) is arranged inside the shell (1); The main structure (2) comprises an air pipe joint (201), the air pipe joint (201) being connected to a piston (202) via an air pipe, a wedge block (203) being fixedly connected to the bottom of the piston (202), a ball head top column (204) being butted against the inclined surface end of the wedge block (203), and a wear-resistant block composite plate (205) being provided at one end of the ball head top column (204) away from the wedge block (203).

2. A pneumatic self-locking clamp for a mast according to claim 1, characterized in that: The outer surface of the piston (202) is sleeved with a piston spring (206), and the top of the piston spring (206) is fixedly connected with a plug (207).

3. A pneumatic self-locking clamp for a mast according to claim 1, characterized in that: A wedge block guide plug (208) is provided at one end of the wedge block (203) away from the ball head top column (204).

4. A pneumatic self-locking clamp for a mast according to claim 1, characterized in that: A return spring (209) is provided at the bottom of the wedge-shaped block (203), and an exhaust screw (210) is provided at one end of the return spring (209) away from the wedge-shaped block (203).

5. A pneumatic self-locking clamp for a mast according to claim 2, characterized in that: The plug (207), the wedge-shaped guide plug (208) and the top of the exhaust screw (210) all penetrate the inner wall of the shell (1) and extend to the outside.

6. A pneumatic self-locking clamp for a mast according to claim 1, characterized in that: The outer surface of the wear-resistant block composite plate (205) is provided with a nylon wear-resistant block (211).

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