CN219119564U - Hydraulic cylinder gland with sealing structure - Google Patents

Abstract

The utility model provides a hydraulic cylinder gland with a sealing structure, which comprises a cylinder body, a gland main body and a push ring; the sealing device comprises a cylinder body, a gland main body, a guide rod, a plurality of pushing blocks, a sealing gasket, a pushing ring, a sealing gasket and a sealing ring, wherein the gland main body is arranged in the cylinder body, the guide rod is movably connected in the gland main body, a mounting groove is formed in the gland main body, a plurality of pushing blocks are movably arranged in the mounting groove, the sealing gasket is arranged at the pushing blocks, the sealing gasket is movably connected with the mounting groove, the sealing gasket is contacted with the outer wall of the guide rod, and the pushing ring is movably arranged in the mounting groove and is movably connected with the pushing blocks.

Description

Hydraulic cylinder gland with sealing structure

Technical Field

The utility model relates to the technical field of hydraulic cylinder gland, in particular to a hydraulic cylinder gland with a sealing structure.

Background

The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston; the hydraulic cylinder basically comprises a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffer device and an exhaust device, wherein a gland is arranged in the right side of the hydraulic cylinder, and the gland has the main function of avoiding the phenomenon of oil leakage generated by the hydraulic cylinder when the hydraulic cylinder works, so that the hydraulic cylinder brings much convenience to people.

For example, the application number is: 202010903413.6, including cylinder body, gland body, connecting block, first breather pipe, filter screen, eye-splice, drift and square hole, first draw-in groove has been seted up to the cylinder body inner wall, and the inside gland body that is provided with of cylinder body, the connecting block top is fixed with screwed joint, and the connecting rod is installed to the connecting block inboard, first breather pipe right side top is fixed with the second gasbag, and second gasbag below right side is connected with the second breather pipe, gland body inboard is provided with the guide bar, and the equal block in both sides has the locating lever about the guide bar right-hand member. This hydraulic cylinder gland with seal structure installs the third gasbag, can carry out the block with the inboard second draw-in groove of filter screen effectively when the third gasbag takes place to expand in addition and fix, and then avoided first gasbag to produce the inside fluid of pollution hydraulic cylinder after damaging in long-term use, increased the practicality.

Aiming at the related technology, the inventor considers that the tightness between the gland and the guide rod is ensured by adopting an air bag expansion mode, but the service life of the device is not long due to the structure of the air bag, the air bag is easy to damage and crack due to friction between the air bag and the guide rod, the air bag also has the risk of air leakage, and the structure of the air bag is inconvenient to replace after being damaged, and is troublesome to use, so that the hydraulic cylinder gland with the sealing structure is provided.

Disclosure of Invention

In order to achieve the above purpose, the utility model provides a hydraulic cylinder gland with a sealing structure, which comprises a cylinder body, a gland main body and a push ring; the gland main body is installed in the cylinder body, swing joint has the guide bar in the gland main body, be equipped with the mounting groove in the gland main body, movable mounting has a plurality of ejector blades in the mounting groove, ejector blade department installs sealed the pad, sealed pad with mounting groove swing joint, sealed pad with the contact of guide bar outer wall, push away ring movable mounting is in the mounting groove, push away the ring with ejector blade swing joint.

Preferably, the inner diameter of the push ring decreases from bottom to top.

Preferably, the push block is provided with a plurality of limiting teeth, and the limiting teeth are movably connected with the mounting groove.

Preferably, the gland main body is symmetrically provided with screws, the screws are movably connected with the gland main body through threads, and the screws are used for pushing the push ring to move.

Preferably, a cushion block is arranged at the end of the screw rod, the cushion block is rotationally connected with the screw rod, and the cushion block is fixedly connected with the push ring.

Preferably, the screw is fixedly provided with a rotating handle.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the pushing ring is moved, the pushing block is pushed by the inner wall of the pushing ring to move inwards to shrink, so that the sealing gasket is extruded, the sealing gasket is tightly contacted with the guide rod, the tightness between the gland main body and the guide rod is ensured, meanwhile, when a gap is generated due to friction loss of the sealing gasket, the pushing ring can be pushed again, so that the pushing block extrudes the sealing gasket, the service life of the sealing gasket is prolonged, meanwhile, the sealing gasket is convenient to design and replace, and the sealing gasket has a simple and reasonable structure and good practicability.

Drawings

FIG. 1 is a schematic cross-sectional view of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of the area A in FIG. 1 according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a push ring according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a gland body structure of the present utility model;

fig. 5 is a schematic diagram of a push block structure according to the present utility model.

In the figure: 1. a cylinder; 2. a gland body; 21. a guide rod; 22. a mounting groove; 23. a pushing block; 231. limit teeth; 24. a sealing gasket; 25. a screw; 251. a cushion block; 252. a rotating handle; 3. push ring.

Detailed Description

In order that the utility model may be more fully understood, a more particular description of the utility model will be rendered by reference to the appended drawings, in which several embodiments of the utility model are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Embodiment one:

referring to fig. 1-5, the present utility model provides a hydraulic cylinder gland with a sealing structure, which comprises a cylinder body 1, a gland main body 2 and a push ring 3; the gland body 2 is installed in the cylinder body 1, swing joint has guide bar 21 in the gland body 2, be equipped with mounting groove 22 in the gland body 2, movable mounting has a plurality of ejector blades 23 in the mounting groove 22, ejector blade 23 department installs sealing gasket 24, sealing gasket 24 with mounting groove 22 swing joint, sealing gasket 24 with guide bar 21 outer wall contact, push ring 3 movable mounting is in the mounting groove 22, push ring 3 with ejector blade 23 swing joint.

With reference to fig. 1-3, the inner diameter of the push ring 3 decreases from bottom to top, so that the push block 23 is driven to move inwards when the push ring 3 moves.

Referring to fig. 1, 2 and 5, the push block 23 is provided with a plurality of limiting teeth 231, the limiting teeth 231 are movably connected with the mounting groove 22, and the design limits the push block 23 to prevent the push block 23 from falling from the mounting groove 22.

Referring to fig. 1-2, the gland main body 2 is symmetrically provided with screws 25, the screws 25 are movably connected with the gland main body 2 through threads, the screws 25 are used for pushing the push ring 3 to move, and the push ring 3 is conveniently pushed to move by rotating the screws 25 to move inwards.

Referring to fig. 1-2, a cushion block 251 is installed at the end of the screw 25, the cushion block 251 is rotationally connected with the screw 25, and the cushion block 251 is fixedly connected with the push ring 3, so that the push ring 3 is protected by the design, and the screw 25 is prevented from being scratched by rotation.

Referring to fig. 1, the screw 25 is fixedly provided with a rotating handle 252, so that the screw 25 can be conveniently rotated.

The specific operation mode of the first embodiment of the utility model is as follows:

the screw rod 25 is rotated through the rotating handle 252, the screw rod 25 rotates to move leftwards to drive the cushion block 251 to move leftwards, the cushion block 251 pushes the push ring 3 to move leftwards, the push block 23 at the inner wall of the push ring 3 is extruded to move towards the center of the gland main body 2, the push block 23 is moved to extrude the sealing gasket 24, the sealing gasket 24 is tightly and stably contacted with the outer wall of the guide rod 21, the problems of oil leakage and air leakage of a hydraulic cylinder in the operation process are avoided, when the sealing gasket 24 is used for a long time, gaps are generated due to friction, the push ring 3 can be adjusted again to move so that the push block 23 extrudes the sealing gasket 24, the sealing gasket 24 is tightly attached to the guide rod 21 again, the sealing performance is guaranteed, the service life of the sealing gasket 24 is greatly prolonged, the resource consumption is reduced, the sealing gasket 24 is convenient to replace, the structure is simple and reasonable, and the practicability is good.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the embodiments described above, but is intended to be within the scope of the utility model, as long as such insubstantial modifications are made by the method concepts and technical solutions of the utility model, or the concepts and technical solutions of the utility model are applied directly to other occasions without any modifications.

Claims (6)

1. A hydraulic ram gland with seal structure, its characterized in that: comprises a cylinder body (1), a gland main body (2) and a push ring (3);

the novel sealing structure is characterized in that the gland main body (2) is installed in the cylinder body (1), a guide rod (21) is movably connected in the gland main body (2), an installation groove (22) is formed in the gland main body (2), a plurality of pushing blocks (23) are movably installed in the installation groove (22), sealing gaskets (24) are installed at the positions of the pushing blocks (23), the sealing gaskets (24) are movably connected with the installation groove (22), the sealing gaskets (24) are in contact with the outer wall of the guide rod (21), the pushing ring (3) is movably installed in the installation groove (22), and the pushing ring (3) is movably connected with the pushing blocks (23).

2. The hydraulic ram gland with sealing structure according to claim 1, wherein: the inner diameter of the push ring (3) is decreased from bottom to top.

3. The hydraulic ram gland with sealing structure according to claim 1, wherein: the push block (23) is provided with a plurality of limiting teeth (231), and the limiting teeth (231) are movably connected with the mounting groove (22).

4. The hydraulic ram gland with sealing structure according to claim 1, wherein: the gland main body (2) is symmetrically provided with screws (25), the screws (25) are movably connected with the gland main body (2) through threads, and the screws (25) are used for pushing the push ring (3) to move.

5. The hydraulic ram gland with sealing structure according to claim 4, wherein: the end of the screw rod (25) is provided with a cushion block (251), the cushion block (251) is rotationally connected with the screw rod (25), and the cushion block (251) is fixedly connected with the push ring (3).

6. The hydraulic ram gland with sealing structure according to claim 4, wherein: the screw rod (25) is fixedly provided with a rotating handle (252).

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