CN220268081U

CN220268081U - Damping type hydraulic cylinder

Info

Publication number: CN220268081U
Application number: CN202321748594.5U
Authority: CN
Inventors: 邓雪英; 卢钟坤
Original assignee: Kunming Shunkai Hydraulic Technology Co ltd
Current assignee: Kunming Shunkai Hydraulic Technology Co ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-12-29
Anticipated expiration: 2033-07-05

Abstract

The utility model discloses a shock-absorbing hydraulic cylinder which comprises a cylinder barrel, a cylinder cover, a piston rod, a movable sleeve and a buffer type sealing component, wherein the cylinder cover is arranged at the end part of the cylinder barrel and is internally provided with a cavity, the piston is arranged in the cavity in a sliding manner, the movable sleeve is arranged on the piston and comprises a spherical sleeve seat and an inner ball movably arranged in the spherical sleeve seat, the outer end of the inner ball is connected with the inner end of the piston rod, the right end of the cylinder barrel is provided with a mounting opening, and the buffer type sealing component is arranged in the mounting opening. According to the utility model, the movable sleeve is arranged at the joint of the piston and the piston rod, when the piston rod is vibrated by external force, the force can be dispersed through the movable sleeve, the influence on the piston is reduced, the normal operation of the piston is ensured, and the buffer type sealing component is arranged at the outer end of the cylinder barrel, so that the buffer effect of the piston rod can be improved on the basis of ensuring the tightness of the piston rod.

Description

Damping type hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a shock-absorbing hydraulic cylinder.

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 consists of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffer device and an exhaust device, and other devices are necessary according to specific application occasions.

However, the existing hydraulic cylinders have the following problems in use: because the connection structure of piston and piston rod is comparatively fixed, when the part that the power take off end of pneumatic cylinder is connected exists great vibration at the in-process of operation, probably can transmit the vibration to the piston rod, and then transmit to piston department through the piston rod, piston and cylinder inner wall produce the atress, can influence the leakproofness of piston for a long time, and then influence the operation effect of pneumatic cylinder, shorten the life of pneumatic cylinder. For this purpose, a corresponding technical solution is required to be designed to solve the existing technical problems.

Disclosure of Invention

The utility model aims to provide a shock-absorbing hydraulic cylinder, which solves the technical problems that as the connecting structure of a piston and a piston rod is relatively fixed, when a part connected with the power output end of the hydraulic cylinder has larger vibration in the operation process, the vibration can be transmitted to the piston rod, and then the vibration is transmitted to the piston through the piston rod, the piston and the inner wall of a cylinder barrel generate stress, the tightness of the piston can be influenced for a long time, the operation effect of the hydraulic cylinder is further influenced, and the service life of the hydraulic cylinder is shortened.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a shock-absorbing hydraulic cylinder, includes cylinder, cylinder cap, piston rod, activity external member and buffering formula seal assembly, the cylinder cap is installed in the tip of cylinder and inside be formed with the chamber way, the piston slides and sets up in the chamber is said, activity external member is installed on the piston and is including spherical sleeve seat and the interior ball of arranging in spherical sleeve seat in the activity, the outer end of interior ball is connected with the inner of piston rod, the installing port has been seted up to the right-hand member of cylinder, buffering formula seal assembly sets up in the installing port, buffering formula seal assembly includes outer sleeve, deformation formula rubber sleeve, spacing cushion, extrusion cushion and screw rod, the inner installing port of arranging in and with installing port inner wall sealing connection of outer sleeve, the embedded port has been seted up at the middle part of outer sleeve, deformation formula rubber sleeve is located embedded port and middle part has seted up the wearing mouth, the piston rod alternates in wearing mouth, spacing cushion divides and is equipped with two sets of and is located the left side of embedded port, extrusion cushion is located the right side of embedded port, the screw rod divides and is equipped with two sets of and thread alternates respectively in outer sleeve on the inner and the screw rod is connected with spacing screw rod.

As a preferable mode of the utility model, a spherical inner cavity is formed in the spherical sleeve seat, a buffer sleeve ring is arranged at the opening of the upper end of the spherical sleeve seat, the buffer sleeve ring is made of rubber materials, and the inner ball is positioned in the spherical inner cavity.

As a preferable mode of the utility model, the deformation rubber sleeve comprises a sleeve and a plurality of groups of expansion gas rings arranged in the sleeve, the sleeve is of a laminated structure, a plurality of groups of annular extrusion grooves are formed on the surface of the sleeve, the expansion gas rings are of inward bulge structures, and the expansion gas rings are communicated with the sleeve.

As a preferable mode of the utility model, two groups of pressure-bearing gaskets are symmetrically arranged at the left end of the outer sleeve, and the extrusion cushion blocks are contacted with the pressure-bearing gaskets.

As a preferable mode of the utility model, the limit cushion block and the extrusion cushion block have the same structure and are respectively positioned at two sides of the outer sleeve.

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

1. this scheme has optimized hydraulic cylinder's structure, has improved the mode of piston and piston rod at first, is provided with movable external member in the junction of piston and piston rod, when the piston rod receives external force and produces the vibration, can disperse the atress and reduce the influence to the piston through movable external member, guarantees the normal operating of piston, and secondly is equipped with buffering formula seal assembly in the outer end of cylinder, can improve the buffering effect of piston rod on the basis of guaranteeing piston rod leakproofness.

2. The hydraulic cylinder structure designed by the scheme can effectively solve the problem that the piston rod is affected by external force to shake, and ensure the stability and the service life of the operation of the hydraulic cylinder.

Drawings

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a view showing the construction of the spherical socket according to the present utility model;

FIG. 3 is a block diagram of a cushion seal assembly according to the present utility model;

fig. 4 is a diagram of a structure of a deformable rubber sleeve according to the present utility model.

In the figure, 1, a cylinder barrel; 2. a cylinder cover; 3. a piston; 4. a piston rod; 5. a cavity channel; 6. a spherical sleeve seat; 7. an inner ball; 8. a mounting port; 9. an outer sleeve; 10. a deformation type rubber sleeve; 11. limiting cushion blocks; 12. extruding a cushion block; 13. a screw; 14. an embedded port; 15. a through hole; 16. a spherical inner cavity; 17. a buffer collar; 18. a jacket; 19. an expansion gas ring; 20. an annular extrusion groove; 21. and a pressure-bearing gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a shock-absorbing hydraulic cylinder includes cylinder 1, cylinder cap 2, piston 3, piston rod 4, activity external member and buffering formula seal assembly, cylinder cap 2 installs in the tip of cylinder 1 and inside be formed with chamber way 5, piston 3 slides and sets up in chamber way 5, activity external member installs on piston 3 and includes spherical sleeve seat 6 and activity internal ball 7 of putting in spherical sleeve seat 6, the outer end of internal ball 7 is connected with the inner of piston rod 4, the installation mouth 8 has been seted up at the right-hand member of cylinder 1, buffering formula seal assembly sets up in installation mouth 8, buffering formula seal assembly includes outer sleeve 9, deformation formula rubber sleeve 10, spacing cushion 11, extrusion cushion 12 and screw rod 13, outer sleeve 9 is put in installation mouth 8 and is with installation mouth 8 inner wall sealing connection, deformation formula rubber sleeve 10 is located interior mouth 14 and the middle part is seted up and is worn out mouthful 15, piston rod 4 is worn mouthful 15 in, spacing cushion 11 divides and is equipped with two sets of and is located the left side of interior mouth 14, extrusion cushion 12 is located the right side of interior mouth 14, 13 are equipped with two sets of interlude respectively on the screw rod 11 and rotate on the screw rod 11, the screw rod is connected with the screw rod 11.

Further improved, as shown in fig. 2: the spherical inner cavity 16 is formed in the spherical sleeve seat 6, the buffer collar 17 is arranged at the opening of the upper end of the spherical inner cavity 16, the buffer collar 17 is made of rubber materials, and the inner ball 7 is positioned in the spherical inner cavity 16, so that the purpose of buffering can be achieved.

Further improved, as shown in fig. 4: the deformation rubber sleeve 10 comprises a sleeve 18 and a plurality of groups of expansion gas rings 19 which are arranged in the sleeve 18, the sleeve 18 is of a laminated structure, a plurality of groups of annular extrusion grooves 20 are formed in the surface of the sleeve 18, the sleeve 18 is of a hollow structure, the expansion gas rings 19 are of inward bulge-shaped structures, the expansion gas rings 19 are communicated with the sleeve 18, in the process of forced extrusion of the sleeve 18, gas in the sleeve 18 is extruded into the expansion gas rings 19, the expansion gas rings 19 expand and are in contact with the piston rod 4, the tightness of the piston rod 4 is ensured, and the reduction of the tightness of a joint part caused by long-time movement of the cylinder 1 and the piston rod 4 is reduced.

Further improved, as shown in fig. 4: two groups of pressure-bearing gaskets 21 are symmetrically arranged at the left end of the outer sleeve 18, and the extrusion cushion block 12 is contacted with the pressure-bearing gaskets 21.

Specifically, the limit cushion block 11 and the extrusion cushion block 12 have the same structure and are respectively positioned at two sides of the outer sleeve 18, and the limit cushion block 11 and the extrusion cushion block are mutually matched for extrusion, so that the deformation adjustment of the deformation type rubber sleeve 10 can be achieved.

When in use: the present utility model is when the piston rod 4 of the hydraulic cylinder acts on the vibrating member, for example: when the vibration is transmitted into the piston rod 4, the piston rod 4 drives the inner ball 7 to vibrate, the inner ball 7 vibrates in the spherical inner cavity 16, vibration is reduced to directly act on the piston, the purpose of unloading force buffering is achieved through the arrangement of the spherical sleeve seat 6 and the inner ball 7, when the piston rod 4 is in a vibration environment for a long time, and a gap exists between the piston rod 4 and the cylinder barrel 1 due to the operation, a worker can twist the screw rod 13 inwards, in the process of the forced extrusion of the outer sleeve 18, gas in the outer sleeve 18 is extruded into the expansion gas ring 19, the expansion gas ring 19 expands and contacts with the piston rod 4, the tightness of the piston rod 4 is guaranteed, and the reduction of the tightness of a joint part due to the long-time movement of the cylinder barrel 1 and the piston rod 4 is reduced.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A damping type hydraulic cylinder is characterized in that: the piston comprises a cylinder barrel (1), a cylinder cover (2), a piston (3), a piston rod (4), a movable sleeve and a buffer type sealing component, wherein the cylinder cover (2) is arranged at the end part of the cylinder barrel (1) and is internally provided with a cavity (5), the piston (3) is arranged in the cavity (5) in a sliding mode, the movable sleeve is arranged on the piston (3) and comprises a spherical sleeve seat (6) and an inner ball (7) which is movably arranged in the spherical sleeve seat (6), the outer end of the inner ball (7) is connected with the inner end of the piston rod (4), the right end of the cylinder barrel (1) is provided with an installation opening (8), the buffer type sealing component is arranged in the installation opening (8) and comprises a deformation rubber sleeve (10), a limiting cushion block (11), an extrusion cushion block (12) and a screw rod (13), the outer sleeve (9) is arranged in the installation opening (8) and is in sealing connection with the inner wall of the installation opening (8), the middle part of the outer sleeve (9) is provided with an embedded opening (14), the embedded opening (14) is arranged in the middle part of the installation opening (15) and is arranged in the middle part of the piston rod (15) and is arranged on the middle part of the piston rod (15) in the installation opening (15), the extrusion cushion block (12) is positioned on the right side of the embedded opening (14), the screw rods (13) are respectively provided with two groups and are respectively threaded on the outer sleeve (9), and the inner ends of the screw rods (13) are rotationally connected with the limit cushion blocks (11).

2. The shock absorber hydraulic ram of claim 1, wherein: the inside of ball cover seat (6) is formed with ball inner chamber (16) and upper end opening part is provided with buffer collar (17), buffer collar (17) adopts rubber materials, interior ball (7) are located ball inner chamber (16).

3. The shock absorber hydraulic ram of claim 1, wherein: the deformation type rubber sleeve (10) comprises a jacket (18) and a plurality of groups of expansion gas rings (19) arranged in the jacket (18), wherein the jacket (18) is of a laminated structure, a plurality of groups of annular extrusion grooves (20) are formed in the surface of the jacket, the expansion gas rings (19) are of inward bulge structures, and the expansion gas rings (19) are communicated with the jacket (18).

4. A shock absorber hydraulic ram as claimed in claim 3 wherein: two groups of pressure-bearing gaskets (21) are symmetrically arranged at the left end of the outer sleeve (18), and the extrusion cushion block (12) is contacted with the pressure-bearing gaskets (21).

5. The shock absorber hydraulic ram of claim 4, wherein: the limit cushion block (11) and the extrusion cushion block (12) have the same structure and are respectively positioned at two sides of the outer sleeve (18).