CN220956256U

CN220956256U - Floating type buffer oil cylinder

Info

Publication number: CN220956256U
Application number: CN202322365041.8U
Authority: CN
Inventors: 林榕杵
Original assignee: Dongguan Dongcun Hydraulic Manufacture Co ltd
Current assignee: Dongguan Dongcun Hydraulic Manufacture Co ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-05-14
Anticipated expiration: 2033-08-31

Abstract

The utility model belongs to the technical field of oil cylinders, and particularly relates to a floating type buffer oil cylinder which comprises a cylinder barrel, wherein a hinging seat is sleeved on the outer surface of the cylinder barrel, a cylinder cover is arranged on one side of the cylinder barrel, a guide sleeve is clamped on the other side of the cylinder barrel, a piston rod coaxially slides in the cylinder barrel and penetrates through a guide hole of the guide sleeve, one end of the piston rod penetrates through the cylinder barrel, a piston attached to the inner wall of the cylinder barrel is arranged at the other end of the piston rod, an oil cavity is arranged in the cylinder barrel along the axis of the cylinder barrel, a first oil port communicated with the oil cavity is arranged on the cylinder barrel, a second oil port is arranged on the cylinder cover, a buffer cavity communicated with the oil cavity and the second oil port is arranged in the middle of the cylinder cover, a buffer sleeve is sleeved on the piston rod, and a buffer plunger matched with the buffer cavity is connected to the rear end face of the piston rod; the utility model has good buffering function and can avoid the problem of impact damage caused by too high relative speed of the piston and the cylinder barrel.

Description

Floating type buffer oil cylinder

Technical Field

The utility model belongs to the technical field of oil cylinders, and particularly relates to a floating type buffer oil cylinder.

Background

The hydraulic cylinder is a linear motion type actuating element with output force and piston effective area being in direct proportion to pressure difference on two sides of the piston, and basically consists of a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffer device and an exhaust device, and a floating buffer oil cylinder appears along with the development of the hydraulic cylinder.

The conventional oil cylinder is shown in fig. 3, and includes a cylinder body 200, a piston 400 is provided in the cylinder body 200, and an oil hole 100 is provided in the cylinder body 200 corresponding to a rod chamber 500 and a rodless chamber 300.

The common oil cylinder has no buffering function, and when the common oil cylinder works, the piston moves reciprocally in the cylinder body under the action of oil pressure, and as the piston only receives the thrust of the oil pressure and does not have buffering, the piston can collide with the inner side of the front cover or the rear cover of the oil cylinder at a higher speed when moving to the end position each time, so that the piston, the front cover and the rear cover of the oil cylinder are easy to collide and damage, and the service life of the oil cylinder is influenced.

Disclosure of utility model

The utility model aims to provide a floating type buffer oil cylinder, which aims to solve the technical problems that in the prior art, when a piston of an oil cylinder moves to an end position, the piston can collide with the inner side of a front cover or a rear cover of the oil cylinder at a high speed, so that the piston, the front cover and the rear cover of the oil cylinder are easy to collide and damage, and the service life of the oil cylinder is influenced.

In order to achieve the above purpose, the embodiment of the utility model provides a floating type buffer oil cylinder, which comprises a cylinder barrel, wherein a hinging seat is sleeved on the outer surface of the cylinder barrel, a cylinder cover is arranged on one side of the cylinder barrel, a guide sleeve is clamped on the other side of the cylinder barrel, a piston rod is coaxially and slidably arranged in the cylinder barrel in a penetrating manner, one end of the piston rod penetrates through a guide hole of the guide sleeve and penetrates out of the cylinder barrel, a piston attached to the inner wall of the cylinder barrel is arranged at the other end of the piston rod, an oil cavity is arranged in the cylinder barrel along the axis of the cylinder barrel, a first oil port communicated with the oil cavity is arranged on the cylinder barrel, a second oil port is arranged on the cylinder cover, a buffer cavity communicated with the oil cavity and the second oil port is arranged in the middle of the cylinder cover, a buffer sleeve is sleeved on the piston rod, the rear end face of the piston rod is connected with a buffer plunger matched with the buffer cavity, the buffer plunger and the piston rod are integrally formed, the front end of the buffer plunger is provided with a cone structure, and the front end of the buffer cavity is provided with a cone hole matched with the cone structure of the buffer plunger.

Optionally, the depth of the buffer cavity is greater than the length of the buffer plunger.

Optionally, the piston is the phase-like setting, the size of piston with the inner chamber size looks adaptation of cylinder, the outward appearance wall of piston with the inner chamber wall looks laminating of cylinder.

Optionally, the uide bushing is the phase form structure, spacing step has been seted up to the inside wall of cylinder, the phase form structure block of uide bushing in on the spacing step.

Optionally, a first oil return channel communicated with the oil cavity of the cylinder barrel is formed in the guide sleeve, and a second oil return channel communicated with the oil cavity of the cylinder barrel is formed in the cylinder cover.

Optionally, a sealing gasket is arranged between the cylinder barrel and the cylinder cover.

Optionally, the buffer sleeve is a conical structure, and the buffer sleeve is abutted with the piston.

Optionally, the piston rod alternates the one end of cylinder is connected with the connector, be provided with the earring that is used for being connected with external equipment on the connector.

Optionally, the hinge seat is provided with a plurality of middle hinge shafts, and the plurality of middle hinge shafts are arranged on the hinge seat in a mirror image mode.

The above technical solutions in the floating type buffer cylinder provided by the embodiments of the present utility model have at least one of the following technical effects:

According to the floating type buffer cylinder provided by the embodiment of the utility model, through the arrangement of the buffer sleeve, when the buffer sleeve is sleeved on the piston, the piston forms a stop on one end of the buffer sleeve, so that the buffer sleeve is limited to move, the buffer sleeve is reliably limited on the piston rod, the operation reliability of the buffer cylinder is ensured, and the buffer sleeve can realize buffering when the piston advances, so that the problem of impact damage caused by too high relative speed between the piston and the guide sleeve is avoided; and through be provided with on the piston rod the buffering plunger be provided with on the cylinder cap with buffering plunger matched with the buffering chamber makes the buffering plunger when getting into along with the piston rod motion in the buffering chamber, the tip of buffering plunger can not strike the bottom of buffering chamber, promptly the buffering plunger can not form the striking rather than the cylinder cap that is relative, can avoid the piston with the cylinder relative speed is too fast causes the problem emergence of striking damage to effectual extension hydro-cylinder.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art cylinder;

Fig. 2 is a schematic diagram of the overall structure of a floating type buffer cylinder according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a floating cushion cylinder according to an embodiment of the present utility model;

Fig. 4 is an exploded view of a floating type buffer cylinder according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

10. A cylinder; 100. a cylinder cover; 100a, a second oil return passage; 101. a guide sleeve; 101a, a first oil return passage; 101b, limiting steps; 102. a piston rod; 103. a piston; 104. an oil chamber; 105. a first oil port; 106. a second oil port; 107. a buffer chamber; 107a, an inner conical hole; 108. a buffer sleeve; 109. buffering the plunger; 110. a sealing gasket; 111. a connector; 111a, earrings;

20. A hinge base; 200. middle hinge shaft

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify 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," 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. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, as shown in fig. 2-4, a floating type buffer cylinder is provided, and includes a cylinder 10, a hinge seat 20 is sleeved on the outer surface of the cylinder 10, a cylinder cover 100 is disposed on one side of the cylinder 10, a guide sleeve 101 is disposed on the other side of the cylinder 10 in a clamping manner, a piston rod 102 is coaxially and slidably disposed in the cylinder 10, one end of the piston rod 102 penetrates through a guide hole of the guide sleeve 101 and penetrates out of the cylinder 10, a piston 103 attached to an inner wall of the cylinder 10 is disposed on the other end of the piston rod 102, and the piston rod 102 can drive the piston 103 to reciprocate along the cylinder 10. An oil cavity 104 is arranged in the cylinder barrel 10 along the axis of the cylinder barrel 10, a first oil port 105 communicated with the oil cavity 104 is arranged on the cylinder barrel 10, a second oil port 106 is arranged on the cylinder cover 100, the first oil port 105 and the second oil port 106 are connected with an external oil supply system, and hydraulic oil flows into or flows out of the oil cavity 104 through the first oil port 105 and the second oil port 106.

In this embodiment, a buffer cavity 107 is formed in the middle of the cylinder cover 100 and is communicated with the oil cavity 104 and the second oil port 106, a buffer sleeve 108 is sleeved on the piston rod 102, a buffer plunger 109 matched with the buffer cavity 107 is connected to the rear end surface of the piston rod 102, and by means of the arrangement of the buffer sleeve 108, the buffer sleeve 108 realizes buffering when the piston 103 advances, so that the problem of impact damage caused by too high relative speed between the piston 103 and the guide sleeve 101 can be avoided; and through being provided with on piston rod 102 the buffering plunger 109, be provided with on cylinder cap 100 with buffering plunger 109 matched with the buffering chamber 107 makes buffering plunger 109 when moving along with piston rod 102 and entering in the buffering chamber 107, the tip of buffering plunger 109 can not strike the bottom of buffering chamber 107, and promptly buffering plunger 109 can not form the striking rather than the cylinder cap 100, can avoid piston 103 and the too fast problem that causes the striking damage of cylinder 10 of relative speed.

In this embodiment, the buffer plunger 109 is integrally formed with the piston rod 102, and the buffer plunger 109 has a conical structure, and the front end of the buffer chamber 107 has an inner conical hole 107a that matches the conical structure of the buffer plunger 109. And the depth of the buffer chamber 107 is greater than the length of the buffer plunger 109. When the buffer plunger 109 enters the buffer cavity 107, the buffer plunger can be automatically centered better, the buffer clearance is reduced, and the buffer effect is improved.

In this embodiment, the piston 103 is disposed in a stage shape, the size of the piston 103 is adapted to the size of the inner cavity of the cylinder 10, and the outer surface wall of the piston 103 is attached to the inner cavity wall of the cylinder 10. The piston 103 pushes the piston rod 102 together to move within the cylinder 10 under the action of oil pressure.

In this embodiment, the guide sleeve 101 has a stepped structure, the inner side wall of the cylinder 10 is provided with a limiting step 101b, and the stepped structure of the guide sleeve 101 is engaged with the limiting step 101 b. By the cooperation between the limit step 101b and the guide sleeve 101, the guide sleeve 101 can be fixed at one end of the cylinder 10, so that one end of the cylinder 10 is in a sealed state.

In this embodiment, the guide sleeve 101 is configured with a first oil return passage 101a that communicates with the oil chamber 104 of the cylinder 10, and the cylinder head 100 is configured with a second oil return passage 100a that communicates with the oil chamber 104 of the cylinder 10. When the piston rod 102 moves towards the cylinder cover 100 and the piston 103 approaches the cylinder cover 100, hydraulic oil is fed from the second oil port 106, the hydraulic oil flows along the second oil return channel 100a, the buffer plunger 109 is matched with the buffer cavity 107, a gap exists between the buffer plunger 109 and the buffer cavity 107, the front end of the buffer plunger 109 is also in a section of conical shape, when the piston rod 102 moves leftwards to the buffer plunger 109 and enters the buffer cavity 107, the returned hydraulic oil is throttled, so that back pressure is generated in the oil cavity 104, the oil quantity entering the oil cavity 104 from the second oil return channel 100a can be regulated, the impact force of the oil in the oil cavity 104 on the piston 103 is controlled, the movement speed of the piston 103 is regulated, and the piston 103 and the cylinder cover 100 are prevented from being impacted. When the piston rod 102 moves towards the guide sleeve 101, hydraulic oil is fed from the first oil inlet, flows along the first oil return channel 101a, pushes the piston 103 to advance rightward, and as the length increases, the oil passing area is smaller and smaller, so that the speed of the piston rod 102 is smaller and smaller, and the piston 103 and the guide sleeve 101 are prevented from impacting when the oil cylinder runs to the bottom.

In this embodiment, a sealing gasket 110 is disposed between the cylinder tube 10 and the cylinder head 100. The sealing gasket 110 can ensure that the cylinder barrel 10 is connected with the cylinder cover 100 more firmly, the sealing performance is improved, the leakage of hydraulic oil in the oil cavity 104 is avoided, and the sealing performance is good.

In this embodiment, the buffer sleeve 108 has a conical structure, and the buffer sleeve 108 abuts against the piston 103. In this embodiment, when the buffer sleeve 108 is sleeved on the piston 103, the piston 103 forms a stop on one end of the buffer sleeve 108, so as to limit the buffer sleeve 108 to move, thereby reliably limiting the buffer sleeve 108 on the piston rod 102, and ensuring the reliability of the operation of the buffer cylinder.

In this embodiment, a connector 111 is connected to one end of the piston rod 102 inserted through the cylinder 10, and an ear ring 111a for connecting with an external device is provided on the connector 111.

In this embodiment, the hinge base 20 is provided with a plurality of middle hinge shafts 200, and the plurality of middle hinge shafts 200 are disposed on the hinge base 20 in a mirror image. The oil cylinder is connected with an external device through the hinging seat 20, so that the multistage oil cylinder is convenient to fix.

According to the floating type buffer cylinder provided by the embodiment of the utility model, through the arrangement of the buffer sleeve 108, when the buffer sleeve 108 is sleeved on the piston 103, the piston 103 forms a stop on one end of the buffer sleeve 108, so that the buffer sleeve 108 is limited to move, the buffer sleeve 108 is reliably limited on the piston rod 102, the operation reliability of the buffer cylinder is ensured, and the buffer sleeve 108 is buffered when the piston 103 advances, so that the problem of impact damage caused by too high relative speed between the piston 103 and the guide sleeve 101 can be avoided; by providing the buffer plunger 109 on the piston rod 102 and providing the buffer chamber 107 on the cylinder cover 100, which is matched with the buffer plunger 109, when the buffer plunger 109 moves into the buffer chamber 107 along with the piston rod 102, the end of the buffer plunger 109 cannot strike the bottom of the buffer chamber 107, that is, the buffer plunger 109 cannot strike the cylinder cover 100 opposite to the bottom, so that the problem of impact damage caused by too high relative speed of the piston 103 and the cylinder 10 can be avoided.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a floating type buffering oil cylinder, its characterized in that, including cylinder (10), cylinder (10) surface cover is equipped with articulated seat (20), one side of cylinder (10) is equipped with cylinder cap (100), the opposite side card of cylinder (10) is equipped with uide bushing (101), coaxial slip in cylinder (10) is worn to be equipped with piston rod (102), piston rod (102) one end is passed the guide hole of uide bushing (101) and wear out cylinder (10), piston (103) with cylinder (10) inner wall laminating are equipped with to the piston rod (102) other end, be equipped with oil pocket (104) along its axis in cylinder (10), be provided with on cylinder (10) with first hydraulic fluid port (105) that oil pocket (104) are linked together, offer second hydraulic fluid port (106) on cylinder cap (100), offer in the middle part of cylinder cap (100) with oil pocket (104) buffer chamber (107) that second hydraulic fluid port (106) are linked together, the cover is equipped with buffer sleeve (108) on piston rod (102), the terminal surface (102) is connected with behind the piston rod (102) with buffer chamber (109) and piston rod (109) are integrated into one piece and piston rod (109), the front end part of the buffer cavity (107) is provided with an inner conical hole (107 a) which is matched with the conical structure of the buffer plunger (109).

2. A floating damper cylinder according to claim 1, characterized in that the depth of the damper chamber (107) is greater than the length of the damper plunger (109).

3. The floating buffer cylinder according to claim 1, wherein the piston (103) is arranged in a stage-like manner, the size of the piston (103) is adapted to the size of the inner cavity of the cylinder (10), and the outer surface wall of the piston (103) is attached to the inner cavity wall of the cylinder (10).

4. A floating type buffer cylinder according to claim 3, wherein the guide sleeve (101) is of a stepped structure, a limit step (101 b) is formed on the inner side wall of the cylinder barrel (10), and the stepped structure of the guide sleeve (101) is clamped on the limit step (101 b).

5. A floating buffer cylinder according to claim 4, characterized in that the guide sleeve (101) is provided with a first oil return passage (101 a) communicated with the oil cavity (104) of the cylinder tube (10), and the cylinder cover (100) is provided with a second oil return passage (100 a) communicated with the oil cavity (104) of the cylinder tube (10).

6. A floating cushion cylinder according to claim 5, characterized in that a sealing gasket (110) is provided between the cylinder tube (10) and the cylinder head (100).

7. A floating damper cylinder according to any one of claims 1-6, characterized in that the damper sleeve (108) has a conical structure, the damper sleeve (108) being in abutment with the piston (103).

8. A floating cushion cylinder according to any one of claims 1-6, wherein one end of the piston rod (102) penetrating the cylinder (10) is connected with a connector (111), and an earring (110 a) for connecting with external equipment is arranged on the connector (111).

9. A floating buffer cylinder according to any one of claims 1-6, characterized in that a plurality of middle hinge shafts (200) are arranged on the hinge base (20), and a plurality of middle hinge shafts (200) are arranged on the hinge base (20) in a mirror image manner.