Mechanical locking hydraulic oil cylinder

Abstract

The utility model discloses a mechanical locking hydraulic oil cylinder, and relates to the technical field of oil cylinders, the mechanical locking hydraulic oil cylinder is provided with a first fixing block, a second fixing block, a locking fixing head, a first locking pin and a second locking pin, the first locking pin is clamped in a first locking hole of a piston body through a first spring, and the second locking pin is clamped in a second locking hole of the piston body through a second spring. After the first locking pin is clamped, the second locking pin is rapidly clamped in the second locking hole through the elastic force effect of the second spring, so that the piston rod is subjected to double locking limiting, the locking effect is better, the first fixing block and the second fixing block are installed on the two sides of the hydraulic oil cylinder body, and the symmetrical locking structures on the two sides can be limited at the same time; the piston rod can be moved more flexibly due to the elastic effect of the first spring and the second spring, the surface of the piston body is prevented from being abraded, and the hydraulic oil cylinder is more durable.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a mechanical locking hydraulic oil cylinder. Background Art

[0002] At present, in order to prevent the hydraulic cylinder from rebounding during operation, most hydraulic cylinders are equipped with a mechanical locking structure on the outside to limit the movable end of the hydraulic cylinder to avoid deviation of the movable end.

[0003] For example, the utility model with patent number CN202020602884.9 discloses a mechanical locking hydraulic cylinder, including a cylinder body, a controller is installed on the front of the cylinder body, a piston rod is arranged inside the cylinder body, a displacement sensor is installed on the surface of the piston rod, rails are welded on both sides of the cylinder body, a moving plate is slidably connected inside the rail, a connecting plate is welded on the opposite side of the moving plate, and the connecting plate is welded to the side of the piston rod; the utility model can assist in fixing the cylinder to prevent it from falling suddenly through the arrangement of the cylinder body, the controller, the piston rod, the displacement sensor, the rail, the moving plate, the connecting plate, the first teeth, the fixing frame, the cylinder, the second teeth, the limiting structure and the pushing plate, and there is no need to fix the cylinder all the time, thereby solving the problem that the existing mechanical locking method of the cylinder is too cumbersome and rigid, which is inconvenient for the staff to use the cylinder;

[0004] The mechanical locking structure of the mechanical locking hydraulic cylinder in this patent is fixed on the piston rod, and the limit is locked by adding a structure to the outside of the piston rod. However, this method will cause wear on the locking part after a long time, affecting the normal locking effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a mechanical locking hydraulic oil cylinder, which solves the problem that the locking parts may wear out and affect the normal locking effect.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a mechanical locking hydraulic oil cylinder, comprising a hydraulic oil cylinder body, an oil inlet hole is opened on the upper surface of the hydraulic oil cylinder body, an oil outlet hole is opened on the other side of the hydraulic oil cylinder body, a fixed end connecting part is arranged on one side of the hydraulic oil cylinder body, a movable end connecting part is arranged on the other side of the hydraulic oil cylinder body, a sealing cover is installed on the outer side of the hydraulic oil cylinder body by bolts, a first fixing block is fixedly installed on one side of the hydraulic oil cylinder body, and a second fixing block corresponding to the first fixing block is fixedly installed on the other side of the hydraulic oil cylinder body Block, a locking fixing head is detachably installed on the outer sides of the first fixing block and the second fixing block, a first spring is arranged inside the locking fixing head, a first locking pin is fixedly connected to the end of the first spring, a second spring is arranged inside the first locking pin, a second spring is fixedly connected to the end of the second spring, a piston rod is welded on one side of the movable end connecting part, a piston body is fixedly installed on the end of the piston rod, first locking holes corresponding to the first locking pin are opened on both sides of the piston body, and a second locking hole corresponding to the second locking pin is opened on the inner side of the first locking hole.

[0007] Preferably, a first cavity is defined inside the locking fixing head, a second cavity is defined inside the first locking pin, and the first spring and the second spring are disposed inside the first cavity and the second cavity, respectively.

[0008] Preferably, the surface of the locking fixing head is provided with evenly distributed connecting threads, and the locking fixing head is threadedly connected to the first fixing block and the second fixing block.

[0009] Furthermore, the surface of the locking and fixing head is provided with evenly distributed anti-slip patterns, and the anti-slip patterns are provided on the outside of the connecting threads.

[0010] Preferably, grooves are formed on the surface of the piston body, and the grooves are distributed on both sides of the first locking hole.

[0011] Preferably, six locking fixing heads are respectively provided, and the material of the locking fixing heads is the same as that of the hydraulic cylinder body. Beneficial Effects

[0012] The utility model provides a mechanical locking hydraulic cylinder. Compared with the prior art, it has the following beneficial effects:

[0013] The mechanical locking hydraulic cylinder is provided with a first fixing block, a second fixing block, a locking fixing head, a first locking pin and a second locking pin. The first locking pin is engaged in the first locking hole of the piston body through a first spring. After the first locking pin is engaged, the second locking pin is quickly engaged in the second locking hole through the elastic force of the second spring, thereby performing double locking and limiting on the piston rod, and the locking effect is better. The first fixing block and the second fixing block are installed on both sides of the hydraulic cylinder body, so that the locking structures symmetrical on both sides can be limited at the same time, and can better bear the force and stabilize the position of the piston body inside the hydraulic cylinder body. Due to the elastic action of the first spring and the second spring, the piston rod can be moved more flexibly, and the wear of the surface of the piston body can be avoided, making it more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the hydraulic cylinder body in the utility model.

[0016] Figure 3 It is a cross-sectional view of the first fixing block in the utility model.

[0017] Figure 4 It is a structural schematic diagram of the locking fixing head in the utility model.

[0018] In the figure: 1. hydraulic cylinder body; 2. oil inlet hole; 3. fixed end connection part; 4. movable end connection part; 5. sealing cover; 6. first fixed block; 7. second fixed block; 8. locking fixing head; 801. first cavity; 802. connecting thread; 9. first locking pin; 901. second cavity; 10. second locking pin; 11. second spring; 12. first spring; 13. piston rod; 14. first locking hole; 15. second locking hole; 16. oil outlet hole; 17. piston body. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4The utility model provides a technical solution: a mechanical locking hydraulic cylinder, comprising a hydraulic cylinder body 1, an oil inlet hole 2 is opened on the upper surface of the hydraulic cylinder body 1, and an oil outlet hole 16 is opened on the other side of the hydraulic cylinder body 1. Through the mutual cooperation between the oil inlet hole 2 and the oil outlet hole 16, it can be connected with an external oil tank to realize oil circulation. A fixed end connection part 3 is arranged on one side of the hydraulic cylinder body 1, and a movable end connection part 4 is arranged on the other side of the hydraulic cylinder body 1. A sealing cover 5 is installed on the outside of the hydraulic cylinder body 1 by bolts, a first fixed block 6 is fixedly installed on one side of the hydraulic cylinder body 1, and a second fixed block 7 corresponding to the first fixed block 6 is fixedly installed on the other side of the hydraulic cylinder body 1. Locking fixing heads 8 are detachably installed on the outsides of the first fixing block 6 and the second fixing block 7, and a first spring is arranged inside the locking fixing head 8. 12. A first locking pin 9 is fixedly connected to the end of the first spring 12, a second spring 11 is arranged inside the first locking pin 9, a second locking pin 10 is fixedly connected to the end of the second spring 11, a piston rod 13 is welded to one side of the movable end connecting part 4, a piston body 17 is fixedly installed on the end of the piston rod 13, first locking holes 14 corresponding to the first locking pin 9 are opened on both sides of the piston body 17, a second locking hole 15 corresponding to the second locking pin 10 is opened on the inner side of the first locking hole 14, the first locking pin 9 is engaged in the first locking hole 14 of the piston body 17 through the first spring 12, and after the first locking pin 9 is engaged, the second locking pin 10 is quickly engaged in the second locking hole 15 by the elastic force of the second spring 11, thereby performing double locking and limiting on the piston rod 13, and the locking effect is better.

[0021] A first cavity 801 is provided inside the locking fixing head 8, a second cavity 901 is provided inside the first locking pin 9, the first spring 12 and the second spring 11 are respectively arranged inside the first cavity 801 and the second cavity 901, and a uniformly distributed connecting thread 802 is provided on the surface of the locking fixing head 8. The locking fixing head 8 is threadedly connected to the first fixing block 6 and the second fixing block 7. By providing the connecting thread 802, the locking fixing head 8 can be installed on the first fixing block 6 and the second fixing block 7, and a uniformly distributed anti-slip pattern is provided on the surface of the locking fixing head 8, and the anti-slip pattern is provided on the outside of the connecting thread 802. A groove is provided on the surface of the piston body 17, and the grooves are distributed on both sides of the first locking hole 14. Six locking fixing heads 8 are respectively provided. The material of the locking fixing head 8 is the same as that of the hydraulic cylinder body 1. By providing two groups of locking fixing heads 8, each group is provided with six, and locking and limiting can be performed at any position inside the hydraulic cylinder body 1 during the movement of the piston body 17, so that the piston body 17, the piston rod 13 and the entire movable end connecting portion 4 are fixed.

[0022] During operation, first install each locking fixing head 8 on the first fixing block 6 and the second fixing block 7 on both sides of the hydraulic cylinder body 1, then install the entire hydraulic cylinder body 1 in the required place, connect the fixed end connecting part 3 and the movable end connecting part 4 to the fixed component and the movable component respectively, and then connect the oil pipe of the oil tank to the oil inlet hole 2 and the oil outlet hole 16. When the piston rod 13 drives the piston body 17 to move, the first locking pin 9 is engaged in the first locking hole 14 of the piston body 17 through the first spring 12, and the second locking pin 10 is locked in the first locking pin. After the engagement, the second locking hole 15 is quickly engaged through the elastic force of the second spring 11, thereby performing double locking and limiting on the piston rod 13, and the locking effect is better. The first fixing block 6 and the second fixing block 7 are installed on both sides of the hydraulic cylinder body 1, so that the locking structures symmetrical on both sides can be limited at the same time, which can better bear the force and stabilize the position of the piston body 17 inside the hydraulic cylinder body 1. Due to the elastic action of the first spring 12 and the second spring 11, the piston rod 13 can be moved more flexibly, avoiding the wear of the surface of the piston body 17, and being more durable.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A mechanical locking hydraulic cylinder, comprising a hydraulic cylinder body (1), characterized in that: An oil inlet hole (2) is provided on the upper surface of the hydraulic cylinder body (1), and an oil outlet hole (16) is provided on the other side of the hydraulic cylinder body (1). A fixed end connection portion (3) is provided on one side of the hydraulic cylinder body (1), and a movable end connection portion (4) is provided on the other side of the hydraulic cylinder body (1). A sealing cover (5) is installed on the outer side of the hydraulic cylinder body (1) by means of bolts. A first fixing block (6) is fixedly installed on one side of the hydraulic cylinder body (1), and a second fixing block (7) corresponding to the first fixing block (6) is fixedly installed on the other side of the hydraulic cylinder body (1). Locking fixing heads (8) are detachably installed on the outer sides of the first fixing block (6) and the second fixing block (7). The locking head (8) is provided with a first spring (12) inside, the end of the first spring (12) is fixedly connected to a first locking pin (9), the first locking pin (9) is provided with a second spring (11) inside, the end of the second spring (11) is fixedly connected to a second locking pin (10), a piston rod (13) is welded to one side of the movable end connecting portion (4), a piston body (17) is fixedly mounted to the end of the piston rod (13), first locking holes (14) corresponding to the first locking pin (9) are formed on both sides of the piston body (17), and a second locking hole (15) corresponding to the second locking pin (10) is formed inside the first locking hole (14).

2. The mechanical locking hydraulic cylinder according to claim 1, characterized in that: A first cavity (801) is defined inside the locking fixing head (8), a second cavity (901) is defined inside the first locking pin (9), and the first spring (12) and the second spring (11) are disposed inside the first cavity (801) and the second cavity (901), respectively.

3. The mechanical locking hydraulic cylinder according to claim 1, characterized in that: The surface of the locking fixing head (8) is provided with evenly distributed connecting threads (802), and the locking fixing head (8) is threadedly connected to the first fixing block (6) and the second fixing block (7).

4. The mechanical locking hydraulic cylinder according to claim 3, characterized in that: The surface of the locking fixing head (8) is provided with evenly distributed anti-slip patterns, and the anti-slip patterns are arranged on the outside of the connecting threads (802).

5. The mechanical locking hydraulic cylinder according to claim 1, characterized in that: The surface of the piston body (17) is provided with grooves, and the grooves are distributed on both sides of the first locking hole (14).

6. The mechanical locking hydraulic cylinder according to claim 1, characterized in that: Six locking fixing heads (8) are respectively provided, and the material of the locking fixing heads (8) is the same as that of the hydraulic cylinder body (1).

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