CN216199458U - Hydraulic cylinder and land leveler - Google Patents

Abstract

The utility model relates to the field of working machine parts, in particular to a hydraulic oil cylinder and a land leveler. The hydraulic cylinder includes: the cylinder comprises a cylinder barrel, wherein a cylinder bottom is arranged at one end of the cylinder barrel, and a first spherical hinge seat is arranged at the outer end part of the cylinder bottom; one end of the piston rod is positioned in the cylinder barrel and is provided with a piston, and the other end of the piston rod is positioned outside the cylinder barrel and is provided with a second spherical hinge seat; the first spherical hinge seat and the second spherical hinge seat respectively comprise a first ball socket and a second ball socket, and the first ball socket and the second ball socket are detachably connected and jointly form an accommodating cavity for accommodating the ball head. Through setting first ball and socket and second ball and socket to can dismantle the connection and form jointly and be used for holding the chamber that holds of bulb, can make this kind of split type structure dismantle, the installation in-process more convenient and can not receive other structures such as piston rod and disturb. In addition, the outer surface of the first spherical hinging seat and the outer surface of the second spherical hinging seat are both spherical structures, so that the spherical hinging seat is easier to cast and form.

Description

Hydraulic cylinder and land leveler

Technical Field

The utility model relates to the field of working machine parts, in particular to a hydraulic oil cylinder and a land leveler.

Background

A blade swing cylinder is usually installed on a grader to control the lateral swing motion of a blade, so that the angle of the cylinder changes constantly during the operation. In order to better eliminate the condition that the piston is acted by radial force when running in the cylinder in the working process of the oil cylinder, the angle between the connecting structures at the two ends of the oil cylinder is ensured to adapt to the change of the angle of the oil cylinder all the time. Therefore, a ball joint structure is generally used to achieve the above function.

The existing connection mode of applying ball joint hinge on mechanical equipment with larger load mainly has the problems of complex structure, difficult installation, difficult molding and higher cost, and the situation that a fastening structure is damaged under larger impact load can occur; the spherical cavity opening of the integral hinge seat is thin in thickness and weak in load bearing capacity, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hydraulic oil cylinder and a land leveler, which are used for solving the defects that a ball joint hinge structure is difficult to assemble and disassemble, difficult to form and high in cost in the prior art.

A first aspect of the present invention provides a hydraulic cylinder, comprising: the cylinder comprises a cylinder barrel, wherein a cylinder bottom is arranged at one end of the cylinder barrel, and a first spherical hinge seat is arranged at the outer end part of the cylinder bottom; one end of the piston rod is positioned in the cylinder barrel and is provided with a piston, and the other end of the piston rod is positioned outside the cylinder barrel and is provided with a second spherical hinge seat; the first spherical hinge seat and the second spherical hinge seat respectively comprise a first ball socket and a second ball socket, and the first ball socket and the second ball socket are detachably connected and jointly form an accommodating cavity for accommodating a ball head.

According to the hydraulic oil cylinder provided by the utility model, a pair of first mounting bosses are arranged outside the first ball socket, and a pair of second mounting bosses are arranged outside the second ball socket, wherein the pair of first mounting bosses and the pair of second mounting bosses are arranged corresponding to each other and are detachably connected together through fasteners.

According to the hydraulic cylinder provided by the utility model, the first ball socket is provided with a connecting part and a first hemispherical part which is integrally formed with the connecting part, the second ball socket is formed into a second hemispherical part which is detachably connected with the first hemispherical part, wherein a pair of first mounting bosses are formed on the first hemispherical part, and a pair of second mounting bosses are formed on the second hemispherical part.

According to the hydraulic oil cylinder provided by the utility model, under the condition that the first hemispherical part and the second hemispherical part are mutually connected, the first hemispherical part and the second hemispherical part jointly form the accommodating cavity, and the first hemispherical part and the second hemispherical part jointly form a connecting port which is used for communicating the outside with the inside of the accommodating cavity and is used for enabling the ball head to rotate.

According to the hydraulic oil cylinder provided by the utility model, the plane of the connecting area of the first hemispherical part and the pair of first mounting bosses and the second hemispherical part and the pair of second mounting bosses is vertical to the axial direction of the cylinder barrel.

According to the hydraulic oil cylinder provided by the utility model, at least one layer of gasket is further arranged between the first ball socket and the second ball socket, wherein the surfaces of the first ball socket and the second ball socket, which are opposite to each other, and the inner edge of the gasket together enclose an annular oil storage groove, and the arrangement direction of the gasket is perpendicular to the axial direction of the cylinder barrel.

According to the hydraulic oil cylinder provided by the utility model, a plurality of layers of gaskets which are overlapped are arranged between the first ball socket and the second ball socket, and the gaskets are made of cold-rolled steel plates.

According to the hydraulic oil cylinder provided by the utility model, the cylinder bottom is provided with the first inserting part, and the first spherical hinge seat is provided with the first socket part, wherein the first inserting part is inserted in the first socket part, and the position where the cylinder bottom is connected with the first spherical hinge seat is welded.

According to the hydraulic oil cylinder provided by the utility model, a second inserting part is formed on the other end of the piston rod, and a second socket part is formed on the second spherical hinge seat, wherein the second inserting part is inserted in the second socket part, and the other end of the piston rod is connected with the second spherical hinge seat in a welding manner.

In a second aspect, the utility model provides a grader, which includes a main body, a blade assembly, and a swing cylinder, wherein the swing cylinder is connected between the main body and the blade assembly and is used for controlling the lateral swing of the blade assembly, and the swing cylinder employs the hydraulic cylinder as described above.

In the hydraulic oil cylinder provided by the utility model, a first spherical hinge seat and a second spherical hinge seat are respectively arranged at the end part of the cylinder bottom and the end part of the piston rod, and both the two spherical hinge seats can comprise a first ball socket and a second ball socket. Through setting first ball and socket and second ball and socket to can dismantle the connection and form jointly and be used for holding the chamber that holds of bulb, can make this kind of split type structure dismantle, the installation in-process more convenient and can not receive other structures such as piston rod and disturb. In addition, the outer surface of the first spherical hinging seat and the outer surface of the second spherical hinging seat are both spherical structures, so that the spherical hinging seat is easier to cast and form.

Further, in the grader provided by the utility model, the swing oil cylinder adopts the hydraulic oil cylinder structure, so that the grader also has the advantages as described above.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front view of a hydraulic cylinder provided by the present invention;

FIG. 2 is a partial cross-sectional view of the hydraulic ram shown in FIG. 1;

FIG. 3 is a perspective view of a first spherical hinge seat or a second spherical hinge seat in the hydraulic cylinder provided by the present invention;

FIG. 4 is a side view of the first or second spherical hinge mount of FIG. 3;

reference numerals:

100: a hydraulic cylinder; 102: a cylinder barrel; 104: a cylinder bottom;

106: a piston rod; 108: a piston; 110: a first spherical hinge mount;

112: a second spherical hinge mount; 114: a first ball socket; 116: a second ball socket;

118: an accommodating chamber; 120: a first mounting boss; 122: a second mounting boss;

124: a fastener; 126: a connecting portion; 128: a first hemispherical portion;

130: a second hemispherical portion; 132: a connecting port; 134: a gasket;

136: an oil storage tank; 138: a first insertion part; 140: a first socket portion;

142: a second insertion part; 144: a second socket portion; s: and (4) a plane.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring now to fig. 1-4, embodiments of the present invention will be described. It should be understood that the following description is only exemplary embodiments of the present invention and does not constitute any particular limitation of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides a hydraulic cylinder 100. The hydraulic ram 100 generally includes a cylinder 102, a bottom 104, a piston rod 106, a piston 108, a first spherical hinge mount 110, and a second spherical hinge mount 112.

Specifically, as shown in fig. 2, the cylinder bottom 104 is disposed at one end of the cylinder tube 102, and as the bottom of the cylinder tube 102, a first spherical hinge seat 110 may be disposed on an outer end portion of the cylinder bottom 104. Further, one end of the piston rod 106 may be located inside the cylinder 102 and provided with the piston 108 thereon, while the other end of the piston rod 106 may be located outside the cylinder 102 and provided with the second spherical hinge seat 112 thereon. Thereby, the overall structure of hydraulic ram 100 as shown in fig. 1 and 2 is formed.

With continued reference to fig. 1-4, the first spherical hinge seat 110 and the second spherical hinge seat 112 may be identical in structure, differing only in the mounting position and the orientation of the connection port for connecting with and rotating the ball head. In an embodiment of the present invention, the first spherical hinge base 110 and the second spherical hinge base 112 may each include a first ball socket 114 and a second ball socket 116, and the first ball socket 114 and the second ball socket 116 may be detachably connected together and may together form a receiving cavity 118 for receiving a ball head (not shown).

Thus, according to the above-mentioned embodiment, in the hydraulic cylinder 100 provided by the present invention, the first spherical hinge seat 110 and the second spherical hinge seat 112 are respectively disposed at the end of the cylinder bottom 104 and the end of the piston rod 106, and both of the spherical hinge seats may include the first ball socket 114 and the second ball socket 116. By providing the first socket 114 and the second socket 116 to be detachably connected and together form the receiving cavity 118 for receiving the ball head, the split structure can be more conveniently detached and assembled without being interfered by other structures such as the piston rod. In addition, the outer surfaces of the first spherical hinge base 110 and the second spherical hinge base 112 are both spherical structures, so that the casting molding is easier.

With further reference to fig. 2, in an embodiment of the present invention, for the first socket 114, the exterior of the first socket 114 may be provided with a pair of first mounting bosses 120, and the two first mounting bosses 120 may be spaced apart from each other and symmetrically arranged with respect to each other; as for the second ball socket 116, similarly to the first ball socket 114, the exterior of the second ball socket 116 may be provided with a pair of second mounting bosses 122, and the two second mounting bosses 122 may also be spaced apart from each other and symmetrically disposed with respect to each other. In actual assembly, the pair of first mounting bosses 120 and the pair of second mounting bosses 122 may be disposed corresponding to each other and detachably coupled to each other by the fasteners 124, thereby achieving detachable coupling between the first socket 114 and the second socket 116.

It is noted herein that the connection between the first mounting boss 120 and the second mounting boss 122 may be accomplished by any suitable fastener 124. For example, in the embodiment shown in fig. 1 and 2, the connection of the two is shown by means of a bolt and nut mating arrangement; and in other alternative embodiments, other configurations are possible. In other words, the form of the fastener 124 does not constitute any particular limitation on the present invention.

In an alternative embodiment, the first socket 114 may have a connecting portion 126 and a first hemispherical portion 128 integrally formed with the connecting portion 126; and second socket 116 may be formed as a second hemispherical portion 130 that is removably coupled to first hemispherical portion 128. Specifically, the connecting portion 126 of the first ball socket 114 may be connected to the cylinder bottom 104 or the piston rod 106 depending on the actual position. When combined with the second hemispherical portion 130, the first hemispherical portion 128 may form a complete spherical receiving cavity 118 for receiving the ball head and allowing the ball head to rotate in the receiving cavity 118.

Further, a pair of first mounting bosses 120, as described above, may be integrally formed on the first hemispherical portion 128, and a pair of second mounting bosses 122, as described above, may be integrally formed on the second hemispherical portion 130, thereby forming a unitary structure as shown in fig. 1 and 2.

In an embodiment of the present invention, when actually applied, in a state where the first hemispherical portion 128 and the second hemispherical portion 130 are connected to each other, for example, as shown in fig. 1 and fig. 2, the first hemispherical portion 128 and the second hemispherical portion 130 may jointly form the accommodating cavity 118 as described above, and the first hemispherical portion 128 and the second hemispherical portion 130 may also jointly form a connection port 132 at the same time, and the connection port 132 may communicate the external environment with the inside of the accommodating cavity 118 and may be used for rotation of the ball (not shown).

With continued reference to fig. 1-4, in an embodiment of the present invention, at least one layer of shims 134 may also be disposed between the first socket 114 and the second socket 116. Specifically, the shims 134 may be located between the end faces of the first hemispherical portion 128 and the first mounting boss 120 and the end faces of the second hemispherical portion 130 and the second mounting boss 122. In other words, the shim 134 may be sandwiched between the end faces of the first hemispherical portion 128 and the first mounting boss 120 and the end faces of the second hemispherical portion 130 and the second mounting boss 122.

In alternative embodiments of the present invention, the number of shims 134 may be selected based on the circumstances and needs. For example, only one layer of shim 134 may be disposed between first socket 114 and second socket 116; in yet other alternative embodiments, multiple layers of shims 134 may be disposed in overlying relation to one another between first socket 114 and second socket 116. In other words, the number of the spacers 134 is not limited to the present invention and may be set according to actual conditions.

In other alternative embodiments, the material of the gasket 134 may be cold rolled steel, for example. This material is more wear resistant and has a higher surface finish, which improves the sealing between the first socket 114 and the second socket 116. It should be understood, of course, that the material of the gasket 134 as described above is merely illustrative and does not limit the present invention in any way. The material of the spacer 134 can be selected according to actual needs.

With continued reference to fig. 1 and 2, in an alternative embodiment of the utility model, a plane S in which the first hemispherical portion 128 and the pair of first mounting bosses 120 meet the second hemispherical portion 130 and the pair of second mounting bosses 122 may be perpendicular to the axial direction of the cylinder 102. In other words, the positions of the junctions between the first hemispherical portion 128 and the pair of first mounting bosses 120 and the second hemispherical portion 130 and the pair of second mounting bosses 122 are transverse to the axial direction of the cylinder 102.

Further, in an alternative embodiment, since the positions of the junctions between the first hemispherical portion 128 and the pair of first mounting bosses 120 and the second hemispherical portion 130 and the pair of second mounting bosses 122 are transverse to the axial direction of the cylinder 102, the arrangement direction of the shims 134 between the above portions is also transverse to the axial direction of the cylinder 102. In other words, the arrangement direction of the spacers 134 is perpendicular to the axial direction of the cylinder 102, as shown by the overall structure of fig. 1 and 2, for example.

In an alternative embodiment, as shown in fig. 3, the surfaces of the first and second sockets 114, 116 opposite to each other and the inner edge of the spacer 134 may together enclose an annular oil reservoir 136 for storing lubricating oil for lubricating the ball head. In other words, in particular embodiments, oil reservoir 136 may be formed between the surfaces of first hemispherical portion 128 and second hemispherical portion 130 that oppose each other and the inner edge of shim 134. That is, after actual assembly, first hemispherical portion 128 and second hemispherical portion 130 are separated from one another by spacer 134, and the radius of the arcuate inner edge of spacer 134 is greater than the radius of spherical receiving cavity 118 formed by first hemispherical portion 128 and second hemispherical portion 130. This enables the oil reservoir 136 to be formed as described above.

Referring back to fig. 2, in the embodiment of the present invention, as for the connection manner of the first spherical hinge base 110 and the second spherical hinge base 112, a first socket portion 138 may be formed on the cylinder bottom 104, and a first socket portion 140 may be formed on the first spherical hinge base 110; similarly to the above, a second socket part 142 may be formed on the other end of the piston rod 106, and a second socket part 144 may be formed on the second spherical hinge seat 112.

Specifically, the first socket part 138 may be plugged in the first socket part 140, and the position where the cylinder bottom 104 meets the first spherical hinge seat 110 may be welded, thereby connecting the first spherical hinge seat 110 and the cylinder bottom 104 to each other. Similarly, the second socket part 142 may be plugged in the second socket part 144, and a position where the other end of the piston rod 106 meets the second spherical hinge seat 112 may be welded, thereby interconnecting the second spherical hinge seat 112 and the piston rod 106. In this way, a unitary structure is formed as shown in fig. 1 and 2.

It should be understood herein that the connection between the first spherical hinge seat 110 and the cylinder bottom 104 and the connection between the second spherical hinge seat 112 and the piston rod 106 can be set according to practical situations, and are not limited to the connection described above. In other words, the above description is only an exemplary embodiment of the present invention, and does not constitute any limitation to the present invention.

During the actual operation of the hydraulic cylinder 100 provided by the embodiment of the present invention, the piston 108 and the piston rod 106 are forced to perform synchronous reciprocating linear motion in the cylinder 102 when the hydraulic cylinder 100 operates. At the same time, hydraulic ram 100 may change its angle from time to time during operation in order to accommodate the swinging of an actuator, such as a blade assembly of a motor grader. In the embodiment of the present invention, the first spherical hinge seat 110 and the second spherical hinge seat 112 at both ends of the hydraulic cylinder 100 are respectively hinged with the connecting end ball head on the main body and the scraper assembly, so that the ball heads can rotate in the accommodating cavities 118 of the first spherical hinge seat 110 and the second spherical hinge seat 112, thereby realizing the swing of the hydraulic cylinder 100 in the working angle.

In the process, because both ends of the hydraulic oil cylinder 100 adopt hinged structures, the radial force generated at the joint of the main machine and the hydraulic oil cylinder 100 in the working process can be completely eliminated, thereby preventing the eccentric wear of the piston due to overlarge radial force, the scraping of the piston rod extrusion guide sleeve and the like.

In summary, in the hydraulic cylinder 100 provided by the embodiment of the utility model, the first ball socket and the second ball socket are detachably connected and together form an accommodating cavity for accommodating the ball head, so that the split structure is more convenient to detach and mount and cannot be interfered by other structures such as the piston rod and the like. In addition, the outer surface of the first spherical hinging seat and the outer surface of the second spherical hinging seat are both spherical structures, so that the spherical hinging seat is easier to cast and form.

Further, a gasket is arranged between the two-part split spherical hinge seat, so that the fastening strength of the component is enhanced, and an oil storage groove can be formed in the inner surface of the accommodating cavity.

In addition, when the hydraulic shovel is used on a working machine such as a land scraper, the two ends of the hydraulic oil cylinder are both in hinged connection between the spherical hinge seats with special structures and the main machine, so that the swing angle of the shovel blade assembly of the land scraper in the transverse direction is larger, and the working performance of the land scraper can be further improved.

On the other hand, the embodiment of the utility model also provides a land scraper. The grader may generally include a main body, a blade assembly, and a swing cylinder. Specifically, a swing cylinder may be coupled between the main body and the blade assembly and used to control lateral swinging of the blade assembly. And the swing cylinder may employ a hydraulic cylinder as described above.

In the land scraper provided by the embodiment of the utility model, the hydraulic oil cylinder structure is adopted, so that all the advantages are achieved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A hydraulic cylinder, comprising:

the cylinder comprises a cylinder barrel, wherein a cylinder bottom is arranged at one end of the cylinder barrel, and a first spherical hinge seat is arranged at the outer end part of the cylinder bottom;

one end of the piston rod is positioned in the cylinder barrel and is provided with a piston, and the other end of the piston rod is positioned outside the cylinder barrel and is provided with a second spherical hinge seat;

the first spherical hinge seat and the second spherical hinge seat respectively comprise a first ball socket and a second ball socket, and the first ball socket and the second ball socket are detachably connected and jointly form an accommodating cavity for accommodating a ball head.

2. The hydraulic ram of claim 1, wherein the exterior of the first socket is provided with a pair of first mounting bosses and the exterior of the second socket is provided with a pair of second mounting bosses,

wherein the pair of first mounting bosses and the pair of second mounting bosses are arranged corresponding to each other and detachably connected to each other by fasteners.

3. The hydraulic ram of claim 2, wherein the first socket has an attachment portion and a first hemispherical portion integrally formed with the attachment portion, the second socket is formed as a second hemispherical portion removably attached to the first hemispherical portion,

wherein a pair of the first mounting bosses are formed on the first hemispherical portion and a pair of the second mounting bosses are formed on the second hemispherical portion.

4. The hydraulic ram of claim 3, wherein the first hemispherical portion and the second hemispherical portion together form the accommodating cavity in a state where the first hemispherical portion and the second hemispherical portion are connected to each other, and the first hemispherical portion and the second hemispherical portion together form a connection port for connecting the outside and the inside of the accommodating cavity and allowing the ball to rotate.

5. The hydraulic cylinder as recited in claim 3, wherein the plane of the areas where the first hemispherical portion and the pair of first mounting bosses are connected to the second hemispherical portion and the pair of second mounting bosses is perpendicular to the axial direction of the cylinder.

6. A hydraulic ram according to any one of claims 1 to 5 wherein at least one shim is also provided between the first and second ball sockets,

wherein mutually opposing surfaces of the first and second ball sockets and an inner edge of the gasket together enclose an annular oil reservoir, and an arrangement direction of the gasket is perpendicular to an axial direction of the cylinder tube.

7. The hydraulic oil cylinder according to claim 6, characterized in that a plurality of layers of the gaskets are arranged between the first ball socket and the second ball socket, and the gaskets are made of cold-rolled steel plates.

8. A hydraulic ram according to any one of claims 1 to 5 wherein a first spigot portion is formed on the base and a first socket portion is formed on the first ball joint seat,

the first inserting part is inserted into the first inserting hole part, and the cylinder bottom is connected with the first spherical hinge seat in a welding mode.

9. A hydraulic ram according to claim 8 wherein a second spigot portion is formed on the other end of the piston rod and a second socket portion is formed on the second spherical hinge mount,

the second inserting portion is inserted into the second inserting opening portion, and the other end of the piston rod is connected with the second spherical hinge seat in a welding mode.

10. A land leveler is characterized by comprising a main body, a scraper blade component and a swing oil cylinder,

the swing oil cylinder is connected between the main body and the scraper knife assembly and used for controlling the transverse swing of the scraper knife assembly, wherein the swing oil cylinder adopts the hydraulic oil cylinder in any one of claims 1 to 9.

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