CN220286107U - Hydro-cylinder with detachable hydro-cylinder buffer structure - Google Patents

Abstract

The utility model relates to an oil cylinder with a detachable oil cylinder buffer structure, which comprises: the cylinder body comprises a cylinder cavity, a buffer cavity, a first oil duct and a second oil duct, wherein the first oil duct and the second oil duct are communicated with the cylinder cavity, the first oil duct and the second oil duct are oppositely arranged, and the first oil duct is communicated with the cylinder cavity through the buffer cavity; one end of the telescopic rod is arranged in the cylinder cavity and is movably connected with the cylinder cavity; the piston is sleeved at one end of the telescopic rod, which is positioned in the cylinder cavity; the buffer component is detachably arranged on the end face of one end of the telescopic rod, which is positioned in the cylinder cavity, and is movably connected with the buffer cavity. Through having dismantlement, simple to operate's characteristics, buffer unit only need change buffer unit can after later stage wearing and tearing, reduced later stage's maintenance degree of difficulty and cost of maintenance. Meanwhile, the oil cylinder debugging device has the advantage of high debugging flexibility, can be used for carrying out on-site disassembly and debugging on the oil cylinder according to different requirements, does not need to return to a factory, and shortens the debugging period.

Description

Hydro-cylinder with detachable hydro-cylinder buffer structure

Technical Field

The utility model relates to the technical field of oil cylinder buffer structures, in particular to an oil cylinder with a detachable oil cylinder buffer structure.

Background

In the current society with rapid technological development, engineering machinery has become an important tool in engineering operation assembly. While hydraulic cylinders are often used as an indispensable actuator in construction machines. As the name suggests, the cushioning device is a device that acts as a mechanical cushioning. In general, during the working process of high-speed running of engineering equipment, a huge impact force is inevitably generated at the end of the running process, and at this time, a buffer device is required to perform speed degradation so as to avoid abrasion and damage of the equipment.

The use comfort of one engineering machine is greatly dependent on the buffering effect of the buffering device, and a rodless cavity buffering structure, a plunger type buffering structure, a floating buffering structure and the like exist at present. However, the above buffer structures have the following disadvantages:

1. the existing buffer structure is not detachable, and the whole piston rod assembly needs to be replaced in later maintenance, so that the maintenance cost is high and the maintenance is difficult;

2. the existing buffer structure needs to be additionally provided with a regulating valve if the use comfort of the engineering machinery needs to be changed, so that the cost is increased;

3. the existing buffer structure has poor debugging flexibility, and cannot be replaced and debugged on site of a client, so that factory return debugging is needed, the flow is complicated, and time waste is caused.

Disclosure of Invention

The utility model provides an oil cylinder with a detachable oil cylinder buffer structure, which solves the technical problems that the buffer structure of the existing oil cylinder is difficult to maintain in the later period and high in maintenance cost, and meanwhile, the existing buffer structure is poor in debugging flexibility.

The utility model discloses an oil cylinder with a detachable oil cylinder buffer structure, which comprises a cylinder body, a telescopic rod, a piston and a buffer assembly, wherein the cylinder body comprises

The cylinder body comprises a cylinder cavity, a buffer cavity, a first oil duct and a second oil duct, wherein the first oil duct and the second oil duct are oppositely arranged, the first oil duct is communicated with the cylinder cavity through the buffer cavity, and the second oil duct is communicated with the cylinder cavity; one end of the telescopic rod is arranged in the cylinder cavity and is movably connected with the cylinder cavity; the piston is sleeved at one end of the telescopic rod, which is positioned in the cylinder cavity; the buffer component is detachably arranged on the end face of one end of the telescopic rod, which is positioned in the cylinder cavity, and is movably connected with the buffer cavity.

Further, a hinge hole is formed in one end, located outside the cylinder cavity, of the telescopic rod; and one end of the cylinder body, which is far away from the cavity opening of the cylinder cavity, is provided with a hinge hole.

Further, the piston, one end of the telescopic rod, which is positioned in the cylinder cavity, the cavity wall of the cylinder cavity and the cavity bottom of the cylinder cavity form a rodless cavity.

Further, the buffer assembly comprises a buffer ring and a locking screw, and the buffer ring and the telescopic rod are coaxially arranged; the locking screw penetrates through the hole of the buffer ring, and the buffer ring is detachably connected to the end face of the telescopic rod, which is located at one end of the cylinder cavity.

Further, a gap is formed between the outer annular wall of the buffer ring and the cavity wall of the buffer cavity.

Further, the distance of the gap is in the range of 0.04mm to 0.06mm.

Furthermore, the buffer ring is made of hard alloy materials.

Further, a plurality of chamfer surfaces are arranged on the outer wall of the buffer ring; the plurality of chamfer surfaces are uniformly distributed around the axis of the buffer ring.

Further, the oil cylinder with the detachable oil cylinder buffer structure further comprises a sealing ring, wherein the sealing ring is sleeved on the outer wall of the piston and is positioned between the piston and the cavity wall of the cylinder cavity.

The oil cylinder with the detachable oil cylinder buffer structure provided by the utility model can realize the following technical effects:

1. the buffer cavity is arranged at the bottom of the cylinder cavity of the oil cylinder, and the buffer assembly is detachably connected with one end of the telescopic rod, so that the buffer assembly has the characteristics of convenient disassembly and installation, and only the buffer assembly is required to be independently replaced after the buffer assembly is worn in the later period, thereby reducing the maintenance difficulty and the maintenance cost in the later period. Meanwhile, the oil cylinder debugging device has the advantage of high debugging flexibility, can be used for carrying out on-site disassembly and debugging on the oil cylinder according to different requirements, does not need to return to a factory, and shortens the debugging period.

2. Buffering can be completed through the cooperation of buffering subassembly and buffering chamber, need not to match the governing valve, manufacturing cost has been reduced.

3. The buffer component has small volume, high processing precision and convenient assembly, and can be adapted to oil cylinders of different types.

4. The buffer component is simple in processing work, convenient for mass production and high in production efficiency.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which:

FIG. 1 is a schematic view of one embodiment of a cylinder having a removable cylinder cushioning structure according to the present utility model;

FIG. 2 is a schematic partial cross-sectional view of one embodiment of a cylinder having a removable cylinder cushioning structure according to the present utility model;

FIG. 3 is a schematic partial cross-sectional view of one embodiment of a cylinder block of a cylinder having a removable cylinder cushioning structure of the present utility model;

FIG. 4 is a schematic illustration of the installation of one embodiment of a cylinder cushioning assembly of the present utility model having a removable cylinder cushioning structure;

FIG. 5 is a schematic cross-sectional view of one embodiment of a damping ring of a cylinder having a removable cylinder damping structure according to the present utility model;

fig. 6 is an enlarged view of a portion a of fig. 2.

Reference numerals:

1. a cylinder; 11. a cylinder chamber; 12. a buffer chamber; 13. a first oil passage; 14. a second oil passage; 2. a telescopic rod; 21. a first end; 22. a threaded hole; 3. a piston; 31. a groove; 4. a buffer assembly; 41. a buffer ring; 42. a locking screw; 43. chamfering; 51. a hinge hole; 52. a rodless cavity; 53. a gap; 54. and (3) sealing rings.

Detailed Description

For a more complete understanding of the nature and the technical content of the embodiments of the present utility model, reference should be made to the following detailed description of embodiments of the utility model, taken in conjunction with the accompanying drawings, which are meant to be illustrative only and not limiting of the embodiments of the utility model. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of embodiments of the utility model and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the utility model herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present utility model, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate the azimuth or the positional relationship based on the azimuth or the positional relationship shown in the drawings. These terms are only used to facilitate a better description of embodiments of the utility model and their examples and are not intended to limit the scope of the indicated devices, elements or components to the particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in embodiments of the present utility model will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. 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 the specific circumstances.

The term "plurality" means two or more, and "plurality" means two or more.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

As shown in fig. 1 to 3, the utility model discloses an oil cylinder with a detachable oil cylinder buffer structure, which comprises a cylinder body 1, a telescopic rod 2, a piston 3 and a buffer assembly 4. The cylinder body 1 is internally provided with a cylinder cavity 11, the bottom of the cylinder cavity 11 is provided with a buffer cavity 12, the buffer cavity 12 is arranged coaxially with the cylinder cavity 11, the buffer cavity 12 is communicated with the cylinder cavity 11, and the buffer cavity 12 is used for accommodating the buffer assembly 4. The cylinder body 1 is also provided with a first oil duct 13 and a second oil duct 14, the second oil duct 14 is positioned at one end of the cylinder body 1 close to the cavity opening of the cylinder cavity 11, and the second oil duct 14 is communicated with the cylinder cavity 11. The first oil duct 13 is located at one end of the cylinder body 1 near the bottom of the cylinder cavity 11, the first oil duct 13 is arranged opposite to the second oil duct 14, the first oil duct 13 is communicated with the buffer cavity 12, namely, the first oil duct 13 is communicated with the cylinder cavity 11 through the buffer cavity 12, and the first oil duct 13 is located at one end of the buffer cavity 12 far away from the cylinder cavity 11. The end of the cylinder block 1 remote from the mouth of the cylinder chamber 11 is constructed with a hinge hole 51, through which hinge hole 51 the cylinder can hinge with a component part of the construction machine.

As shown in fig. 1 and 4, one end of the telescopic rod 2 is configured with a stepped shaft having a diameter smaller than that of the telescopic rod 2, i.e., the stepped shaft may be regarded as a first end 21 of the telescopic rod 2, and the diameter of the first end 21 is smaller than that of the telescopic rod 2. The end of the telescopic rod 2 remote from the first end 21 is configured with a hinge hole 51, through which hinge hole 51 the cylinder can hinge with other parts of the working machine. A part of the piston 3 is sleeved at the first end 21, and another part of the piston 3 is sleeved at the main body of the telescopic rod 2.

Preferably, the outer wall of the first end 21 is provided with an external thread, the inner wall of the piston 3 is provided with an internal thread adapted to the external thread, and the piston 3 can be screwed with the first end 21 to apply a tightening torque.

As shown in fig. 2 and 4, the buffer assembly 4 includes a buffer ring 41 and a locking screw 42, and a threaded hole 22 adapted to the locking screw 42 is formed on an end surface of the first end 21. The locking screw 42 penetrates the hole of the buffer ring 41 and the buffer ring 41 is mounted and fixed on the end surface of the first end 21, so that the buffer assembly 4 and the telescopic rod 2 can be detachably connected. The buffer ring 41 is arranged coaxially with the telescopic rod 2. Alternatively, the buffer ring 41 is made of cemented carbide material. Preferably, the buffer ring 41 is made of 42CrMo steel, so that the outer surface of the buffer ring 41 can be prevented from being scratched when the buffer ring 41 enters the buffer cavity 12.

Preferably, as shown in fig. 2, 4 and 5, three chamfer surfaces 43 are configured on the outer wall of the buffer ring 41, the value range of the angle a between the chamfer surfaces 43 and the axis of the buffer ring 41 is 2 degrees, 3 degrees or 4 degrees, the three chamfer surfaces 43 are positioned at one end of the buffer ring 41, and the three chamfer surfaces 43 are uniformly distributed around the axis of the buffer ring 41. When the buffer ring 41 is fixed to the first end 21, the chamfer 43 is located at an end far from the first end 21, and a distance between an end surface of the first end 21 and a side surface of the locking screw 42 facing the first end 21 is greater than a length of the buffer ring 41, so that the buffer ring 41 can be moved along a length direction of the locking screw 42.

As shown in fig. 2 and 6, when the cylinder is in a non-extended state, one end of the telescopic rod 2 enters the cylinder cavity 11, and the end face of the first end 21 abuts against the cavity bottom of the cylinder cavity 11, and meanwhile, the buffer assembly 4 is located in the buffer cavity 12, and at this time, the outer wall of the first end 21, the cavity bottom of the cylinder cavity 11, the cavity wall of the cylinder cavity 11, and a side face of the piston 3 facing the cavity bottom of the cylinder cavity 11 together form a rodless cavity 52. The telescopic rod 2 and the cylinder cavity 11 are coaxially arranged, so that the coaxiality of the oil cylinder can be ensured, and the working stability of the oil cylinder can be improved. The telescopic rod 2 can move in the cylinder cavity 11 along the length direction of the cylinder body 1, and meanwhile, the telescopic rod 2 can also drive the buffer assembly 4 to move in the buffer cavity 12 along the length direction of the locking screw 42. The outer diameter of the buffer ring 41 is smaller than the diameter of the buffer cavity 12, when the buffer ring 41 is positioned in the buffer cavity 12, the buffer ring 41 and the buffer cavity 12 are coaxially arranged, a gap 53 is formed between the outer annular wall of the buffer ring 41 and the cavity wall of the buffer cavity 12, and the distance of the gap 53 ranges from 0.04mm to 0.06mm. Preferably, a gap 53 of 0.05mm is formed between the outer annular wall of the buffer ring 41 and the chamber wall of the buffer chamber 12.

Optionally, as shown in fig. 2 and 4, the cylinder with the detachable cylinder buffer structure further includes a sealing ring 54. The outer wall of the piston 3 is formed with a plurality of grooves 31, the grooves 31 being adapted to receive sealing rings 54. The sealing ring 54 is made of rubber material, so the sealing ring 54 has elasticity, and is sleeved in the groove 31 of the piston 3 by the elasticity of the sealing ring 54. The plurality of seal rings 54 are uniformly arranged along the length direction of the telescopic rod 2. One part of the seal ring 54 is positioned in the groove 31, and the other part is exposed outside the groove 31. When the telescopic rod 2 is positioned in the cylinder cavity 11, the sealing ring 54 is extruded to elastically deform, one part of the sealing ring 54 is positioned in the groove 31, and the other part of the sealing ring is abutted against the cavity wall of the cylinder cavity 11, so that the sealing ring 54 is positioned between the piston 3 and the cavity wall of the cylinder cavity 11, and the sufficient sealing performance of the oil cylinder is ensured.

Application scenario of an exemplary embodiment:

as shown in fig. 1 to 6, when the cylinder starts to retract, hydraulic oil enters the cylinder chamber 11 from the second oil passage 14, the portion of the hydraulic oil is located on the left side of the piston 3, and the portion of the hydraulic oil pushes the piston 3 to move toward the bottom of the cylinder chamber 11. The hydraulic oil on the right side of the piston 3 is pushed by the piston 3 to move toward the bottom of the cylinder chamber 11, and this part of the hydraulic oil flows from the cylinder chamber 11 through the buffer chamber 12 and flows out of the first oil passage 13, at this time, the buffer ring 41 moves on the locking screw 42 and is automatically aligned, and then the buffer ring 41 slowly enters the buffer chamber 12, and three chamfer surfaces 43 on the buffer ring 41 can be used to adjust the buffer speed. As the buffer ring 41 enters the buffer chamber 12, the hydraulic oil on the right side of the piston 3 can enter the buffer chamber 12 through the gap 53 only and flow out of the first oil passage 13. At this time, the oil passing area is reduced, and the oil pressure in the rod-less chamber 52 is increased, and the movement speed of the piston 3 is slowed down, reducing the risk of the end face of the first end 21 striking the bottom of the cylinder chamber 11 when reaching the formation end point.

The above description and the drawings illustrate embodiments of the utility model sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiment of the present utility model is not limited to the structure that has been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (9)

1. An oil cylinder with a detachable oil cylinder buffer structure, which is characterized by comprising:

the cylinder body (1) comprises a cylinder cavity (11), a buffer cavity (12), a first oil duct (13) and a second oil duct (14), wherein the first oil duct (13) and the second oil duct (14) are oppositely arranged, the first oil duct (13) is communicated with the cylinder cavity (11) through the buffer cavity (12), and the second oil duct (14) is communicated with the cylinder cavity (11);

one end of the telescopic rod (2) is arranged in the cylinder cavity (11) and is movably connected with the cylinder cavity (11);

the piston (3) is sleeved at one end of the telescopic rod (2) positioned in the cylinder cavity (11);

the buffer component (4) is detachably arranged on the end face of one end of the telescopic rod (2) positioned in the cylinder cavity (11) and is movably connected with the buffer cavity (12).

2. The cylinder as claimed in claim 1, wherein,

one end of the telescopic rod (2) positioned outside the cylinder cavity (11) is provided with a hinge hole (51);

and one end of the cylinder body (1) far away from the cavity opening of the cylinder cavity (11) is provided with a hinge hole (51).

3. The cylinder as claimed in claim 2, wherein,

the piston (3), one end of the telescopic rod (2) positioned in the cylinder cavity (11), the cavity wall of the cylinder cavity (11) and the cavity bottom of the cylinder cavity (11) form a rodless cavity (52).

4. A cylinder according to claim 3, characterized in that the buffer assembly (4) comprises:

the buffer ring (41) is arranged coaxially with the telescopic rod (2);

and a locking screw (42) penetrates through the hole of the buffer ring (41) and enables the buffer ring (41) to be detachably connected to the end face of one end of the telescopic rod (2) positioned in the cylinder cavity (11).

5. The cylinder as claimed in claim 4, wherein,

a gap (53) is formed between the outer annular wall of the buffer ring (41) and the cavity wall of the buffer cavity (12).

6. The cylinder as claimed in claim 5, wherein,

the distance of the gap (53) is in the range of 0.04 mm-0.06 mm.

7. The cylinder as claimed in claim 6, wherein,

the buffer ring (41) is made of hard alloy materials.

8. The cylinder as claimed in claim 4, wherein,

the outer wall of the buffer ring (41) is provided with a plurality of chamfer sections (43); a plurality of chamfer faces (43) are uniformly distributed around the axis of the buffer ring (41).

9. The cylinder according to any one of claims 1 to 8, characterized by further comprising:

and the sealing ring (54) is sleeved on the outer wall of the piston (3) and is positioned between the piston (3) and the cavity wall of the cylinder cavity (11).