A cobra oil cylinder

Abstract

The utility model discloses a cobra oil pressure cylinder, including the cylinder body, the cylinder body is installed with the piston rod that protrudes axially, the front end fixed mounting of piston rod has the rectangular mounting block, the mounting block is hinged and is installed with connecting rod a, connecting rod c respectively, the front end of cylinder body is provided with the mounting post parallel with piston rod, the front end of mounting post is hinged with connecting rod b, the middle part of connecting rod c is hinged with connecting rod b, the other end of connecting rod a is hinged with the compression arm, the other end of connecting rod b is hinged with the compression arm, the mounting block, connecting rod a, connecting rod b, connecting rod c and compression arm constitute a five connecting rod mechanism. When the piston cylinder of the utility model contracts, the compression block moves a larger distance to the rear, can effectively realize the avoidance, reduces the risk of collision.

Description

Technical Field

[0001] This utility model relates to the field of lever cylinder technology, specifically a cobra hydraulic cylinder. Background Technology

[0002] A lever cylinder is a linear motion device driven by a hydraulic system, mainly used in clamping and positioning processes in mechanical manufacturing. Its core structure includes a cylinder body, piston, and lever mechanism. The pressure of hydraulic oil pushes the piston rod to move linearly, achieving the clamping or releasing of the workpiece. Currently, most lever cylinders use a tilting and rotating or vertical movement of the pressure plate to achieve workpiece clamping and releasing (e.g., Chinese utility model patents with publication numbers CN212043672U and CN207830272U). With this design, the pressure plate is relatively close to the clamping point after release, which can easily lead to collisions when the workpiece is being picked up or unloaded. Utility Model Content

[0003] The purpose of this invention is to provide a cobra hydraulic cylinder to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cobra hydraulic cylinder, comprising a cylinder body, wherein an axially extending piston rod is mounted on the cylinder body, a rectangular mounting block is fixedly mounted on the front end of the piston rod, a connecting rod a and a connecting rod c are respectively hinged to the mounting block, a mounting post parallel to the piston rod is provided at the front end of the cylinder body, a connecting rod b is hinged to the front end of the mounting post, the connecting rod c is hinged to the middle of the connecting rod b, a pressure arm is hinged to the other end of the connecting rod a, and the other end of the connecting rod b is hinged to the pressure arm. The mounting block, connecting rod a, connecting rod b, connecting rod c, and pressure arm form a five-bar linkage mechanism.

[0005] Preferably, a clamping block is hinged to one end of the clamping arm.

[0006] Preferably, the length of the connecting rod b6 is greater than the lengths of the connecting rod a5 and the connecting rod c7.

[0007] Compared with the prior art, the beneficial effects of this utility model are: when the piston cylinder of this utility model contracts, the pressing block moves a large distance backward. The action of the pressing block is similar to the attack action of a cobra, which can effectively achieve avoidance and reduce the risk of collision. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model in the compressed state;

[0009] Figure 2 This is a schematic diagram of the structure of this utility model in the released state.

[0010] In the diagram: 1. Cylinder body; 2. Piston rod; 3. Mounting column; 4. Mounting block; 5. Connecting rod a; 6. Connecting rod b; 7. Connecting rod c; 8. Clamping arm; 9. Clamping block. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0012] Please see Figure 1 , 2 This utility model provides a technical solution: a cobra hydraulic cylinder, including a cylinder body 1, an axially extending piston rod 2 mounted on the cylinder body 1, a rectangular mounting block 4 fixedly mounted on the front end of the piston rod 2, a connecting rod a5 and a connecting rod c7 respectively hinged to the mounting block 4, a mounting post 3 parallel to the piston rod 2 provided at the front end of the cylinder body 1, a connecting rod b6 hinged to the front end of the mounting post 3, the other end of the connecting rod c7 hinged to the middle of the connecting rod b6, the other end of the connecting rod a5 hinged to the tail of the clamping arm 8, the other end of the connecting rod b6 hinged to the clamping arm 8, a clamping block 9 hinged to the extended end of the clamping arm 8, the clamping block 9 is used to contact the workpiece during clamping, the mounting block 4, the connecting rod a5, the connecting rod b6, the connecting rod c7 and the clamping arm 8 form a five-bar linkage mechanism, the length of the connecting rod b6 is greater than the length of the connecting rod a5 and the connecting rod c7.

[0013] Working principle: such as Figure 1 As shown, when pressed, piston rod 2 extends, pressing block 9 is pushed forward and pressed down, and piston rod 2 retracts as follows: Figure 2 As shown, the clamping block 9 moves to the rear. The movement of the clamping block 9 throughout the process is similar to the attacking action of a cobra. When not clamping the workpiece, it can make a large distance to avoid collisions.

[0014] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cobra hydraulic cylinder, comprising a cylinder body (1), wherein the cylinder body (1) is equipped with an axially extending piston rod (2), characterized in that: A rectangular mounting block (4) is fixedly installed at the front end of the piston rod (2). The mounting block (4) is hinged to a connecting rod a (5) and a connecting rod c (7). The front end of the cylinder (1) is provided with a mounting column (3) parallel to the piston rod (2). The front end of the mounting column (3) is hinged to a connecting rod b (6). The connecting rod c (7) is hinged to the middle of the connecting rod b (6). The other end of the connecting rod a (5) is hinged to a clamping arm (8). The other end of the connecting rod b (6) is hinged to the clamping arm (8). The mounting block (4), connecting rod a (5), connecting rod b (6), connecting rod c (7) and clamping arm (8) form a five-bar linkage.

2. The cobra hydraulic cylinder according to claim 1, characterized in that: A clamping block (9) is hinged to one end of the clamping arm (8).

3. The cobra hydraulic cylinder according to claim 1, characterized in that: The length of the connecting rod b (6) is greater than the lengths of the connecting rod a (5) and the connecting rod c (7).

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