Improved wrench for assembling oil cylinder

Abstract

The utility model discloses an improved wrench for oil cylinder assembly, including the wrench main part, the front end of wrench main part is equipped with the first semicircle protruding, the junction of first semicircle protruding and wrench main part is equipped with the first through -hole that the piston rod of oil cylinder passes, the both sides symmetry of first through -hole are equipped with two first clamping post of corresponding clamping with the clamping groove on the guide sleeve, the rear end of wrench main part is equipped with the second semicircle protruding, the junction of second semicircle protruding and wrench main part is equipped with the second through -hole. When assembling the oil cylinder, after the cooperation of first clamping post and clamping groove clamping, press the first semicircle protruding of the front end of wrench main part, can steadily with the guide sleeve into the oil cylinder cylinder, when disassembling the oil cylinder, after the cooperation of first clamping post and clamping groove clamping, reciprocating wrench main part and pulls outwards, using the friction of guide sleeve and the inside of oil cylinder cylinder, can with guide sleeve turn out of oil cylinder cylinder, can improve the convenience of oil cylinder assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly, specifically to an improved wrench for assembling hydraulic cylinders. Background Technology

[0002] like Figure 1 and Figure 2 As shown, during cylinder assembly, piston rod 2 is inserted into cylinder barrel 1, then guide sleeve 3 is placed on piston rod 2 and pressed into cylinder barrel 1. Finally, nut 4 is connected and locked to piston rod 2. Pressing guide sleeve 3 into cylinder barrel 1 during assembly is very inconvenient, as guide sleeve 3 easily tilts up on one side. Pressure needs to be applied to the tilted side to ensure both sides are flush, but due to the inaccurate point of force, guide sleeve 3 easily gets stuck and cannot be pushed forward. If the cylinder needs maintenance, disassembling guide sleeve 3 is even more inconvenient. Since no point of force can be found at the top of guide sleeve 3, no force can be applied; the bottom of the cylinder must be disassembled, and guide sleeve 3 must be pushed out from inside cylinder barrel 1. To solve the problem of no point of force during cylinder assembly and disassembly, guide sleeve 3 has been improved, as follows: Figure 3 As shown, two slots 31 are symmetrically arranged on the top outer edge of the guide sleeve 3. However, it is still inconvenient to assemble with ordinary screwdrivers and other assembly tools. There is an urgent need to design a corresponding assembly tool to improve the convenience of assembly and disassembly. Summary of the Invention

[0003] In order to solve the technical problems existing in the prior art, the purpose of this application is to provide an improved wrench for assembling hydraulic cylinders, which can improve the convenience of assembling and disassembling hydraulic cylinders.

[0004] To solve the aforementioned existing technical problems, the purpose of this application is achieved by the following technical solution: an improved wrench for assembling hydraulic cylinders, comprising a wrench body, the front end of the wrench body having a first semi-circular protrusion, the connection between the first semi-circular protrusion and the wrench body having a first through hole for the piston rod of the hydraulic cylinder to pass through, two first engaging pins symmetrically arranged on both sides of the first through hole corresponding to the engaging grooves on the guide sleeve, the rear end of the wrench body having a second semi-circular protrusion, the connection between the second semi-circular protrusion and the wrench body having a second through hole.

[0005] Preferably, the wrench body adopts a long strip structure, and the width of the wrench body gradually decreases from the front end to the rear end.

[0006] Preferably, the first snap-fit ​​post and the wrench body are integrally formed.

[0007] Preferably, two second locking posts are symmetrically provided on both sides of the second through hole, which are engaged with the slots on the guide sleeve; the diameter of the second through hole is smaller than the diameter of the first through hole; and the distance between the two second locking posts is smaller than the distance between the two first locking posts.

[0008] Preferably, the first locking post and the second locking post are located on the same side of the wrench body.

[0009] Preferably, the first locking post and the second locking post are located on the front and back sides of the wrench body.

[0010] Preferably, the second locking post and the wrench body are integrally formed.

[0011] Preferably, two sets of connecting holes with different distances are symmetrically provided on both sides of the first through hole, and the first snap-fit ​​post is fixed to the wrench body after extending into the connecting hole.

[0012] Preferably, the connecting hole is circular, and the connecting hole has an internal thread, while the first snap-fit ​​post has an external thread that connects with the internal thread.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The improved wrench for assembling hydraulic cylinders using the above-mentioned technical solution allows for smooth insertion of the guide sleeve into the cylinder barrel after the first locking pin engages with the locking groove during cylinder assembly by pressing the first semi-circular protrusion at the front end of the wrench body. During cylinder disassembly, after the first locking pin engages with the locking groove, reciprocating the wrench body and pulling it outwards allows the guide sleeve to be rotated out of the cylinder barrel using the friction between the guide sleeve and the inner side of the cylinder barrel. This improves the convenience of assembling and disassembling hydraulic cylinders. Attached Figure Description

[0015] Figure 1 This is an exploded view of the hydraulic cylinder;

[0016] Figure 2 This is an assembly diagram of the hydraulic cylinder;

[0017] Figure 3 This is a schematic diagram of the guide sleeve structure;

[0018] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0019] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0020] Figure 6 This is a structural schematic diagram of Embodiment 3 of the present invention;

[0021] Figure 7 This is a structural schematic diagram of Embodiment 4 of the present invention;

[0022] Figure 8 This is a schematic diagram of the connection between the first snap-fit ​​post and the connecting hole in Embodiment 5 of this utility model;

[0023] In the diagram: 1. Cylinder barrel; 2. Piston rod; 3. Guide sleeve; 4. Nut; 5. Wrench body; 51. First locking pin; 511. External thread; 52. First through hole; 53. First semi-circular protrusion; 54. Second semi-circular protrusion; 55. Second through hole; 56. Second locking pin; 57. Connecting hole; 571. Internal thread. Detailed Implementation

[0024] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Example 1:

[0027] like Figure 4 As shown, an improved wrench for assembling hydraulic cylinders includes a wrench body 5. The front end of the wrench body 5 is provided with a first semi-circular protrusion 53. The connection between the first semi-circular protrusion 53 and the wrench body 5 is provided with a first through hole 52 for the piston rod 2 of the hydraulic cylinder to pass through. On both sides of the first through hole 52, there are two first locking pins 51 that are symmetrically engaged with the locking grooves 31 on the guide sleeve 3. The rear end of the wrench body 5 is provided with a second semi-circular protrusion 54. The connection between the second semi-circular protrusion 54 and the wrench body 5 is provided with a second through hole 55.

[0028] When assembling the hydraulic cylinder, after the first locking pin 51 engages with the locking groove 31, pressing the first semi-circular protrusion 53 at the front end of the wrench body 5 will smoothly insert the guide sleeve 3 into the cylinder barrel 1. When disassembling the hydraulic cylinder, after the first locking pin 51 engages with the locking groove 31, reciprocatingly turning the wrench body 5 and pulling it outward will utilize the friction between the guide sleeve 3 and the inner side of the cylinder barrel 1 to rotate the guide sleeve 3 out of the cylinder barrel 1. This improves the convenience of assembling and disassembling the hydraulic cylinder.

[0029] When the wrench body 5 is not in use, the second through hole 55 is used to hang the wrench body 5 on the assembly frame for easy access; the first through hole 52 can also serve the same purpose.

[0030] The first locking post 51 and the wrench body 5 are integrally formed. This facilitates manufacturing and provides high strength.

[0031] Example 2:

[0032] like Figure 5 As shown, based on Embodiment 1, the wrench body 5 adopts a long strip structure, and the width of the wrench body 5 gradually decreases from the front end to the rear end. Two second locking posts 56 are symmetrically provided on both sides of the second through hole 55, corresponding to the locking grooves 31 on the guide sleeve 3; the diameter of the second through hole 55 is smaller than the diameter of the first through hole 52; the distance between the two second locking posts 56 is smaller than the distance between the two first locking posts 51. The first through hole 52 and the first locking posts 51 are suitable for assembling and disassembling large-sized hydraulic cylinders, while the second through hole 55 and the second locking posts 56 are suitable for assembling and disassembling small-sized hydraulic cylinders. This allows for the matching of two different sizes of hydraulic cylinders on the same wrench body 5, reducing the cost of assembly and disassembly.

[0033] The first locking pin 51 and the second locking pin 56 are located on the same side of the wrench body 5. This facilitates observation and comparison by the staff, allowing them to select a structure that matches the hydraulic cylinder model.

[0034] The second locking post 56 and the wrench body 5 are integrally formed. This facilitates manufacturing and provides high strength.

[0035] Example 3:

[0036] like Figure 6 As shown, the structure is basically the same as in Embodiment 2, except that the first locking post 51 and the second locking post 56 are located on the front and back sides of the wrench body 5. Although it is convenient to observe and compare when they are located on the same side, when placed on a table, the smooth side tends to stick to the table, which is inconvenient to pick up next time. By setting them on the front and back sides of the wrench body 5, the defect of sticking to the table is eliminated, making it easier to pick up and use.

[0037] Example 4:

[0038] like Figure 7 As shown, based on Embodiment 1, two sets of connecting holes 57 at different distances are symmetrically arranged on both sides of the first through hole 52. The first locking post 51 extends into the connecting hole 57 and is fixed to the wrench body 5. The first locking post 51 is fixed in the connecting holes 57 at different distances, which is suitable for the installation of guide sleeves 3 of different diameters and is convenient to use.

[0039] Example 5:

[0040] like Figure 8As shown, based on Embodiment 4, the connecting hole 57 is circular, and an internal thread 571 is provided inside the connecting hole 57. The first snap-fit ​​post 51 is provided with an external thread 511 that connects with the internal thread 571. The connection and fixation between the first snap-fit ​​post 51 and the connecting hole 57 are achieved through the mating connection of the internal thread 571 and the external thread 511, which is convenient and practical.

[0041] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. An improved wrench for assembling hydraulic cylinders, comprising a wrench body (5), characterized in that: The front end of the wrench body (5) is provided with a first semi-circular protrusion (53). The connection between the first semi-circular protrusion (53) and the wrench body (5) is provided with a first through hole (52) through which the piston rod (2) of the oil cylinder passes. Two first locking pins (51) are symmetrically provided on both sides of the first through hole (52) and are engaged with the locking groove (31) on the guide sleeve (3). The rear end of the wrench body (5) is provided with a second semi-circular protrusion (54). The connection between the second semi-circular protrusion (54) and the wrench body (5) is provided with a second through hole (55).

2. The improved wrench for assembling hydraulic cylinders according to claim 1, characterized in that: The wrench body (5) adopts a long strip structure, and the width of the wrench body (5) gradually decreases from the front end to the rear end.

3. The improved wrench for assembling hydraulic cylinders according to claim 1, characterized in that: The first snap-fit ​​post (51) and the wrench body (5) are integrally formed.

4. The improved wrench for assembling hydraulic cylinders according to claim 1, characterized in that: The second through hole (55) has two symmetrical second locking pins (56) on both sides that are engaged with the locking grooves (31) on the guide sleeve (3); the diameter of the second through hole (55) is smaller than the diameter of the first through hole (52); the distance between the two second locking pins (56) is smaller than the distance between the two first locking pins (51).

5. The improved wrench for assembling hydraulic cylinders according to claim 4, characterized in that: The first locking pin (51) and the second locking pin (56) are located on the same side of the wrench body (5).

6. The improved wrench for assembling hydraulic cylinders according to claim 4, characterized in that: The first locking pin (51) and the second locking pin (56) are located on the front and back sides of the wrench body (5).

7. The improved wrench for assembling hydraulic cylinders according to claim 4, characterized in that: The second snap-fit ​​post (56) and the wrench body (5) are integrally formed.

8. The improved wrench for assembling hydraulic cylinders according to claim 1, characterized in that: Two sets of connecting holes (57) with different distances are symmetrically provided on both sides of the first through hole (52). The first snap-fit ​​post (51) extends into the connecting hole (57) and is fixed to the wrench body (5).

9. The improved wrench for assembling hydraulic cylinders according to claim 8, characterized in that: The connecting hole (57) is circular, and the connecting hole (57) is provided with an internal thread (571). The first snap-fit ​​post (51) is provided with an external thread (511) that connects with the internal thread (571).

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