阅读说明：本技术 一种具有缓冲结构的防过热式液压油缸 (Overheating-prevention hydraulic oil cylinder with buffer structure ) 是由 张道龙 张旭 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种具有缓冲结构的防过热式液压油缸,该液压油缸旨在解决现有技术下缓冲的效果不全面,且不具备散热的效果,油缸长时间在高温下作业,会加速零部件的老化的技术问题。该液压油缸包括油缸套筒、安装在所述油缸套筒左右两端起到密封作用的左端盖和右端盖、设置于所述油缸套筒内可沿水平方向移动的活塞组件。该液压油缸利用通过缓冲组件和弹性定位块的使用,从两个方向对活塞组件进行缓冲,从而降低活塞组件工作时与油缸套筒内壁的冲击力,从而提高油缸的使用寿命,通过设置导向套,限定活塞组件的方向,避免因活塞组件偏移,造成工作精度低的问题,降低油缸套筒内液压油和活塞组件的温度,延缓各部件的老化速度。(The invention discloses an overheating-prevention hydraulic oil cylinder with a buffer structure, which aims to solve the technical problems that the buffer effect is incomplete and the hydraulic oil cylinder does not have a heat dissipation effect in the prior art, and the aging of parts can be accelerated when the hydraulic oil cylinder is operated at high temperature for a long time. The hydraulic oil cylinder comprises an oil cylinder sleeve, a left end cover, a right end cover and a piston assembly, wherein the left end cover and the right end cover are arranged at the left end and the right end of the oil cylinder sleeve and play a role in sealing, and the piston assembly is arranged in the oil cylinder sleeve and can move along the horizontal direction. This hydraulic cylinder utilizes the use through buffering subassembly and elastic locating piece, cushions piston assembly from two directions to reduce piston assembly during operation and the impact force of hydro-cylinder sleeve inner wall, thereby improve the life of hydro-cylinder, through setting up the uide bushing, inject piston assembly's direction, avoid because of piston assembly squints, cause the problem that work precision is low, reduce the temperature of hydraulic oil and piston assembly in the hydro-cylinder sleeve, delay the ageing speed of each part.)

1. An overheating-prevention hydraulic oil cylinder with a buffer structure comprises an oil cylinder sleeve, a left end cover, a right end cover and a piston assembly, wherein the left end cover and the right end cover are installed at the left end and the right end of the oil cylinder sleeve and play a role in sealing; the oil cylinder sleeve is characterized in that the inner side of the left end cover is fixedly connected with a buffer assembly which is used for buffering the piston assembly, the right end of the piston assembly penetrates through the outward extension of the right end cover, sealing grooves are formed in the oil cylinder sleeve, the left end cover and the right end cover respectively, a first sealing element is installed in each sealing groove, a cooling assembly is fixedly connected to the outer side of the oil cylinder sleeve, the oil cylinder sleeve is used for reducing the temperature of the piston assembly during working according to the cooling assembly, elastic positioning blocks which are vertically symmetrical are fixedly connected to the inner side of the oil cylinder sleeve, a guide sleeve for limiting the motion direction of the piston assembly is fixedly connected between each elastic positioning block and the other elastic positioning block, and the upper ends of the left side and the right side of the oil cylinder sleeve are respectively provided with a first oil inlet and outlet and a second oil inlet and outlet.

2. The hydraulic ram with a cushion structure for preventing overheating according to claim 1, wherein the cushion assembly comprises a first cushion member and a second cushion member, a guide post mounted on a left end of the second cushion member, and an elastic member elastically deformable between the first cushion member and the second cushion member.

3. The anti-overheating hydraulic oil cylinder with the buffering structure as claimed in claim 2, wherein a guide hole is formed in the right end of the first damping element of the buffering assembly, the guide post is movably connected to the guide hole, and a guide post is arranged inside the elastic element.

4. The anti-overheating hydraulic oil cylinder with the buffering structure as claimed in claim 1, wherein the piston assembly comprises a piston rod, a piston body mounted at the left end of the piston rod, and a second sealing element arranged outside the piston body and used for sealing.

5. The overheating prevention hydraulic oil cylinder with the buffering structure as set forth in claim 4, wherein the piston assembly is provided with an annular groove on the surface of the piston body, and the second sealing element is disposed in the annular groove.

6. The anti-overheating hydraulic oil cylinder with the buffering structure as claimed in claim 1, wherein the cooling assembly comprises a cooling housing, liquid inlet and outlet ports formed at upper and lower ends of the cooling housing, and a detachable sealing plug arranged in the liquid inlet and outlet ports for sealing.

7. The anti-overheating hydraulic oil cylinder with the buffering structure as claimed in claim 1, wherein a rotating part is fixedly connected to the left end of the left end cover, a mounting seat is rotatably connected to the outer side of the rotating part, a lug is fixedly connected to the right end of the piston assembly, and a fastening piece is arranged between the cylinder sleeve and the left end cover and between the cylinder sleeve and the right end cover.

Technical Field

The invention belongs to the technical field of hydraulic oil cylinders, and particularly relates to an overheating-prevention hydraulic oil cylinder with a buffer structure.

Background

The hydraulic oil cylinder is a hydraulic actuating element which can convert hydraulic energy into mechanical energy and does linear reciprocating motion or swinging motion, a speed reducer can be omitted by using the hydraulic oil cylinder to realize reciprocating motion, the hydraulic oil cylinder is reliable in operation and stable in motion, is widely applied to a mechanical hydraulic system and is an important core element for providing power for machinery.

At present, the invention patent with patent number CN211082438U discloses: a hydraulic cylinder is provided with a cylinder body, a cylinder bottom, a cylinder cover, a piston rod and a sliding sleeve, wherein the cylinder bottom and the cylinder cover are respectively connected to the left end and the right end of the cylinder body; the inner wall of the cylinder body is provided with a metal ceramic coating, a protruding part extends from the bottom of the cylinder to one side of the piston, the diameter of the outer surface of the protruding part is the same as that of the inner wall of the cylinder body, a first groove is formed in the middle of the protruding part in the direction opposite to the piston, an exhaust valve is connected to the bottom of the cylinder, a Stent seal and a Y-shaped ring are arranged between the piston and the metal ceramic coating, the Y-shaped ring is symmetrically arranged on two sides of the Stent seal, the left end face of the piston is connected with a first fastening screw and a first buffer gasket which have the same diameter of the outer surface, the right end face of the piston is connected with a second fastening screw and a second buffer gasket which have the same diameter of the outer surface, an O-shaped ring is arranged between the sliding sleeve and the cylinder body, a Glare ring is arranged between the sliding sleeve and the piston rod, a second groove is arranged on the left side of the sliding sleeve, and the diameter of the first groove is the same as that of the first fastening screw and the first buffer gasket, the diameter of the second groove is the same as the diameter of the outer surface of the second fastening screw and the diameter of the outer surface of the second buffer gasket, and a dustproof ring is arranged between the cylinder cover and the piston rod. The stability that its adopted to promote the hydro-cylinder through discharge valve reduces inside vibrations, utilizes the buffering packing ring to reduce the rigidity and strikes, but this hydraulic cylinder only has one direction to have the buffering packing ring, and the effect of buffering is not comprehensive, and does not have radiating effect, and the hydro-cylinder is long-time to be worked under high temperature, can accelerate the ageing of spare part.

Therefore, in order to solve the above problems that the daily oil cylinder has a poor buffering effect and the aging of parts is accelerated by high temperature, it is necessary to improve the use scenario of the hydraulic oil cylinder.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the invention aims to provide an overheating-prevention hydraulic oil cylinder with a buffer structure, which aims to solve the technical problems that the buffer effect is not comprehensive and the heat dissipation effect is not achieved, and the aging of parts can be accelerated when the oil cylinder is operated at high temperature for a long time in the prior art.

(2) Technical scheme

In order to solve the technical problem, the invention provides an overheating-prevention hydraulic oil cylinder with a buffer structure, which comprises an oil cylinder sleeve, a left end cover, a right end cover and a piston assembly, wherein the left end cover and the right end cover are arranged at the left end and the right end of the oil cylinder sleeve and have a sealing effect, and the piston assembly is arranged in the oil cylinder sleeve and can move along the horizontal direction; the inner side of the left end cover is fixedly connected with a buffer assembly which is used for buffering the piston assembly, the right end of the piston assembly penetrates through the right end cover and extends outwards, sealing grooves are formed in the cylinder sleeve, the left end cover and the right end cover, a first sealing element is installed in each sealing groove, a cooling assembly is fixedly connected to the outer side of the cylinder sleeve, the cylinder sleeve is used for reducing the temperature of the piston assembly during working according to the cooling assembly, elastic positioning blocks which are vertically symmetrical are fixedly connected to the inner side of the cylinder sleeve, a guide sleeve used for limiting the motion direction of the piston assembly is fixedly connected between the elastic positioning blocks and the other elastic positioning block, and the upper ends of the left side and the right side of the cylinder sleeve are respectively provided with a first oil inlet and outlet and a second oil inlet and outlet.

When the hydraulic oil cylinder of the technical proposal is used, hydraulic oil is added through the first oil inlet and outlet, the piston component is pushed rightwards under the action of the hydraulic oil pressure, the direction of the piston assembly is limited under the action of the guide sleeve, the piston assembly is prevented from deviating until the elastic positioning block is reached, the piston assembly cannot move continuously, meanwhile, the elastic positioning block plays a role in damping, reduces the impact force on the piston assembly, then adds hydraulic oil from the second oil inlet and outlet to reversely push the piston assembly to move, under the action of the buffer assembly, the buffer assembly buffers between the piston assembly and the left end cover, the temperature of hydraulic oil in the cylinder sleeve and the piston assembly is reduced through the cooling assembly, the aging speed of each component is delayed, through seal groove and first sealing element, ensure the leakproofness between cylinder sleeve, left end lid and the right-hand member lid, prevent that hydraulic oil from spilling.

Preferably, the damping assembly includes a first damping member and a second damping member, a guide post installed at a left end of the second damping member, and an elastic member elastically deformable between the first damping member and the second damping member. Through the design of buffering subassembly, cushion between piston assembly and left end lid to reduce the impact of piston assembly to the left end lid, guarantee piston assembly's integrality.

Preferably, the buffering component is provided with a guide hole at the right end of the first damping element, the guide post is movably connected to the guide hole, and the inner side of the elastic element is provided with the guide post. Through the cooperation of guiding hole and guide post, the orientation of restricted elastic element avoids elastic element skew.

Preferably, the piston assembly comprises a piston rod, a piston body arranged at the left end of the piston rod, and a second sealing element arranged outside the piston body and used for sealing. And the tightness between the piston body and the inner wall of the cylinder sleeve is ensured through the second sealing element, and the operation of the cylinder is realized according to the change of the volume of hydraulic oil.

Preferably, the piston assembly is provided with an annular groove on the surface of the piston body, and the second sealing element is arranged in the annular groove. Through the design of ring channel, play the effect to second sealing element location, avoid second sealing element slope, cause the leakproofness variation.

Preferably, the cooling assembly comprises a cooling housing, liquid inlet and outlet openings formed at the upper end and the lower end of the cooling housing, and a detachable sealing plug arranged in the liquid inlet and outlet opening to play a sealing role. Through the plugging and unplugging of the sealing plugs in the liquid inlet and the liquid outlet, the cooling medium can be conveniently added or discharged.

Preferably, the left end cover left end fixedly connected with rotates the piece, it rotates the outside and is connected with the mount pad to rotate, piston assembly right-hand member fixedly connected with hangers, be provided with the fastener between cylinder sleeve and left end cover and the right end cover. Through hangers and a mounting seat, the oil cylinder is fixed, the angle of the mounting seat can be adjusted, and the mounting is more convenient.

(3) Advantageous effects

Compared with the prior art, the invention has the beneficial effects that: according to the hydraulic oil cylinder, the piston assembly is buffered from two directions by using the buffer assembly and the elastic positioning block, so that the impact force between the piston assembly and the inner wall of the cylinder sleeve when the piston assembly works is reduced, the service life of the oil cylinder is prolonged, the direction of the piston assembly is limited by arranging the guide sleeve, the problem of low working precision caused by the deflection of the piston assembly is solved, the temperature of hydraulic oil in the cylinder sleeve and the temperature of the piston assembly are reduced by the cooling assembly, the aging speed of each component is delayed, the sealing performance of the joint of the cylinder sleeve, the left end cover and the right end cover is ensured by the sealing groove and the first sealing element, the hydraulic oil is prevented from leaking, and the normal work of the oil cylinder is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of a hydraulic cylinder according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a hydraulic cylinder according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a hydraulic cylinder according to an embodiment of the present invention;

FIG. 4 is an assembled view of a damping assembly in an embodiment of the hydraulic ram of the present invention.

The labels in the figures are: 1. an oil cylinder sleeve; 2. a left end cap; 3. a right end cap; 4. a buffer assembly; 41. a first damping element; 42. a second damping element; 43. a guide post; 44. an elastic element; 45. a guide hole; 5. a piston assembly; 51. a piston rod; 52. a piston body; 53. an annular groove; 54. a second sealing element; 6. a sealing groove; 7. a first sealing element; 8. a cooling assembly; 81. cooling the housing; 82. a liquid inlet and outlet; 83. a sealing plug; 9. an elastic positioning block; 10. a guide sleeve; 11. a first oil inlet and outlet; 12. a second oil inlet and outlet; 13. a rotating member; 14. a mounting seat; 15. hanging a lug; 16. a fastener.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood and obvious, the technical solutions in the embodiments of the present invention are clearly and completely described below to further illustrate the invention, and obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments.

Example 1

The specific embodiment is an overheating-prevention hydraulic oil cylinder with a buffer structure, and a schematic diagram of a three-dimensional structure of the overheating-prevention hydraulic oil cylinder is shown in fig. 1, and the hydraulic oil cylinder comprises an oil cylinder sleeve 1, a left end cover 2 and a right end cover 3 which are arranged at the left end and the right end of the oil cylinder sleeve 1 and have a sealing effect, and a piston assembly 5 which is arranged in the oil cylinder sleeve 1 and can move along the horizontal direction; the inner side of the left end cover 2 is fixedly connected with a buffer assembly 4 used for buffering a piston assembly 5, the right end of the piston assembly 5 penetrates through the right end cover 3 and extends outwards, a sealing groove 6 is formed in each of the cylinder sleeve 1, the left end cover 2 and the right end cover 3, a first sealing element 7 is installed in each sealing groove 6, a cooling assembly 8 is fixedly connected to the outer side of each cylinder sleeve 1, the temperature of the piston assembly 5 during working is reduced by the cylinder sleeve 1 according to the cooling assembly 8, vertically symmetrical elastic positioning blocks 9 are fixedly connected in each cylinder sleeve 1, a guide sleeve 10 used for limiting the movement direction of the piston assembly 5 is fixedly connected between each elastic positioning block 9 and the other elastic positioning block 9, and the upper ends of the left side and the right side of each cylinder sleeve 1 are respectively provided with a first oil inlet and outlet 11 and a second oil inlet and outlet 12.

The buffer assembly 4 comprises a first damping element 41, a second damping element 42, a guide post 43 mounted at the left end of the second damping element 42, and an elastic element 44 arranged between the first damping element 41 and the second damping element 42 and capable of elastically deforming, wherein the buffer assembly 4 is provided with a guide hole 45 at the right end of the first damping element 41, the guide post 43 is movably connected to the guide hole 45, and the guide post 43 is arranged on the inner side of the elastic element 44.

Meanwhile, the piston assembly 5 comprises a piston rod 51, a piston body 52 installed at the left end of the piston rod 51, and a second sealing element 54 arranged outside the piston body 52 for sealing, wherein the piston assembly 5 is provided with an annular groove 53 on the surface of the piston body 52, and the second sealing element 54 is arranged in the annular groove 53. The number of the annular grooves 53 can be increased or decreased according to the design requirement, and the number of the annular grooves 53 is not less than 2.

In addition, the cooling assembly 8 comprises a cooling shell 81, liquid inlet and outlet ports 82 formed in the upper end and the lower end of the cooling shell 81, and a detachable sealing plug 83 arranged in the liquid inlet and outlet ports 82 and playing a sealing role, the left end of the left end cover 2 is fixedly connected with a rotating part 13, the outer side of the rotating part 13 is rotatably connected with a mounting seat 14, the right end of the piston assembly 5 is fixedly connected with a hanging lug 15, and a fastening piece 16 is arranged between the cylinder sleeve 1 and the left end cover 2 as well as between the cylinder sleeve 1 and the right end cover 3.

The front structural schematic diagram of the hydraulic oil cylinder is shown in fig. 2, the side structural schematic diagram of the hydraulic oil cylinder is shown in fig. 3, and the assembly schematic diagram of the buffer assembly 4 is shown in fig. 4.

When the hydraulic oil cylinder of the technical scheme is used, hydraulic oil is added through the first oil inlet and outlet 11, the piston assembly 5 is pushed rightwards under the action of hydraulic oil pressure, the direction of the piston assembly 5 is limited under the action of the guide sleeve 10, the piston assembly 5 is prevented from deviating, the piston assembly 5 cannot move continuously until the elastic positioning block 9 is reached, meanwhile, the elastic positioning block 9 plays a role in damping, the impact force on the piston assembly 5 is reduced, then the hydraulic oil is added from the second oil inlet and outlet 12 to reversely push the piston assembly 5 to move, the piston assembly 5 and the left end cover 2 are buffered under the action of the buffer assembly 4, the temperature of the hydraulic oil in the oil cylinder sleeve 1 and the temperature of the piston assembly 5 are reduced through the cooling assembly 8, the aging speed of each component is delayed, and the sealing performance among the oil cylinder sleeve 1, the left end cover 2 and the right end cover 3 is ensured through the sealing groove 6 and the first sealing element 7, and the hydraulic oil is prevented from leaking.

Having thus described the principal technical features and basic principles of the invention, and the advantages associated therewith, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description is described in terms of various embodiments, not every embodiment includes only a single embodiment, and such descriptions are provided for clarity only, and those skilled in the art will recognize that the embodiments described herein can be combined as a whole to form other embodiments as would be understood by those skilled in the art.