CN215334679U - Safety valve, gearbox, engineering machine and agricultural machine - Google Patents
Safety valve, gearbox, engineering machine and agricultural machine Download PDFInfo
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- CN215334679U CN215334679U CN202121739085.7U CN202121739085U CN215334679U CN 215334679 U CN215334679 U CN 215334679U CN 202121739085 U CN202121739085 U CN 202121739085U CN 215334679 U CN215334679 U CN 215334679U
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- inner hole
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Abstract
The utility model discloses a safety valve, a gearbox, engineering machinery and agricultural machinery, wherein the safety valve comprises an upper valve body, a lower valve body, a valve core, an elastic component and an adjusting pad; the upper valve body is detachably connected with the lower valve body, and an oil drainage hole is formed in the side wall of the upper valve body; the valve core is arranged in an inner channel formed by the upper valve body and the lower valve body; an inner hole I is formed in the valve core, a plurality of adjusting pads are placed in the inner hole I, and the pressure of the safety valve is adjusted by placing different numbers of adjusting pads; be equipped with hole II in the lower valve body, elastomeric element's bottom supports the bottom surface department at hole II, and elastomeric element's top supports and is in adjusting pad department, with the case top tightly in the hole III department of last valve body under elastomeric element's elasticity to cut off hole III and draining hole. The utility model solves the defect that the stamping structure is easy to deform and the defect that the relative regulation limit pressure of the stamping structure is smaller; the utility model has simple structure, easy processing and manufacture and low cost.
Description
Technical Field
The utility model relates to a safety valve suitable for a gearbox of engineering machinery or agricultural machinery.
Background
At present, a safety valve is arranged at an oil inlet of a torque converter or an oil inlet of a main pressure valve of an engineering machinery or agricultural machinery gearbox, and the safety valve is mainly used for adjusting the pressure of the oil inlet to realize the safe operation of a hydraulic system. Often the relief valve adopts the ball valve structure, realizes sealed and pressure adjustment through steel ball and spring, and the valve body often adopts the structure of punching press, receives the restriction of structure, and sealed effect is not good, and to the straightness that hangs down of spring and parallelism etc. require highly, manufacturing cost also rises thereupon, and the mould in earlier stage of stamping workpiece drops into great, because stamping structure's restriction, the stamping workpiece warp easily moreover, and the ultimate pressure setting of adjustment is also relatively less.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a safety valve, in particular to a safety valve suitable for a gearbox of engineering machinery or agricultural machinery.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model discloses a safety valve, which comprises an upper valve body, a lower valve body, a valve core, an elastic part and an adjusting pad, wherein the upper valve body is provided with a first valve core; the upper valve body is detachably connected with the lower valve body, and an oil drainage hole is formed in the side wall of the upper valve body; the valve core is arranged in an inner channel formed by the upper valve body and the lower valve body; an inner hole I is formed in the valve core, a plurality of adjusting cushions are placed in the inner hole I, and the pressure of the safety valve is adjusted by placing different numbers of adjusting cushions; and an inner hole II is formed in the lower valve body, the bottom of the elastic part is abutted to the bottom surface of the inner hole II, the top of the elastic part is abutted to the adjusting pad, and the valve core is tightly abutted to the inner hole III of the upper valve body under the elasticity of the elastic part, so that the inner hole III is separated from the oil drainage hole.
The specific scheme is as follows: the upper valve body is connected with the lower valve body through threads.
The preferable scheme is as follows: go up the valve body lower part and have the internal thread, lower valve body upper portion has the external screw thread, realizes dismantling the connection between them through the cooperation of internal and external screw thread.
As an optimization scheme of the utility model: the top surface of the valve core is of a spherical surface structure and is used for forming a sealing surface with an inner hole III of the upper valve body.
The specific scheme is as follows: the elastic component adopts a spring, the pressure oil pushes the valve core to overcome the spring force of the spring, and the top surface of the valve core and the inner hole III form a gap, so that oil drainage and pressure relief are realized.
The preferable scheme is as follows: the spring is a cylindrical spring.
The utility model also discloses a gearbox, which comprises a gearbox body, wherein the safety valve is arranged on the gearbox body.
The utility model also discloses engineering machinery provided with the gearbox.
The utility model also discloses an agricultural machine which is provided with the gearbox.
The utility model has the beneficial effects that:
the utility model has simple structure and less parts, solves the problem of deformation of the valve body of the stamping part, simultaneously has simple and reliable threaded connection and assembly of the valve body, and greatly compensates the problems of leakage and the like caused by the manufacturing errors of the verticality and the parallelism of the spring by the matched installation mode of the valve core and the lower valve body.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a cross-sectional view of a safety valve of the present invention;
fig. 2 is a schematic structural view of the safety valve of the present invention.
The attached drawings are as follows: 1-upper valve body 1, 2-valve core, 3-adjusting pad, 4-elastic component, 5-lower valve body and 6-gearbox body.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the safety valve comprises an upper valve body 1, a lower valve body 5, a valve core 2, an elastic component 4 and an adjusting pad 3; the upper valve body 1 is detachably connected with the lower valve body 5, and an oil drainage hole is formed in the side wall of the upper valve body 1; the valve core 2 is arranged in an inner channel formed by the upper valve body 1 and the lower valve body 5; an inner hole I is formed in the valve core 2, a plurality of adjusting pads 3 are placed in the inner hole I, and the pressure of the safety valve is adjusted by placing different numbers of adjusting pads 3; be equipped with hole II in the lower valve body 5, the bottom of elastomeric element 4 supports the bottom surface department at hole II, and elastomeric element 4's top supports 3 departments at the adjusting pad, tightly pushes up case 2 in the hole III department of last valve body 1 under elastomeric element 4's elasticity to cut off hole III and draining hole.
The specific scheme is as follows: the upper valve body 1 and the lower valve body 5 are connected through threads.
The preferable scheme is as follows: go up the valve body lower part and have the internal thread, lower valve body upper portion has the external screw thread, realizes dismantling of both and connects through the cooperation of internal and external screw thread.
As an optimization scheme of the utility model: the top surface of the valve core is of a spherical surface structure and is used for forming a sealing surface with an inner hole III of the upper valve body.
The specific scheme is as follows: the elastic component adopts a spring, the pressure oil pushes the valve core to overcome the spring force of the spring, and the top surface of the valve core and the inner hole III form a gap to realize oil drainage and pressure relief.
The preferable scheme is as follows: the spring is a cylindrical spring.
The working process is as follows: during the assembly, at first the spring is placed in hole II of valve body 5 down, installs adjusting pad 3 in hole I of case 3, then with case 2 and the combination of valve body 5 down together, and then passes through compression spring and pass through threaded connection and realize the installation of upper and lower valve body.
When pressure oil passes through an oil path where the upper valve body 1 is located, when the pressure of the pressure oil is greater than the pressure set by the safety valve, the pressure oil pushes the valve core 2 to overcome the spring force of the spring, a gap is formed between the top surface of the valve core 2 and the upper valve body 1, oil drainage and pressure relief are achieved, protection is formed for a hydraulic system, when the pressure of the pressure oil is smaller than the pressure set by the safety valve, the valve core 2 is pushed by the spring, and the upper spherical surface and an inner hole III of the upper valve body 1 form a sealing surface.
In conclusion, the valve body of the utility model has simple structure and less number of parts, simultaneously solves the problem of deformation of the valve body of the stamping part, simultaneously has simple and reliable threaded connection and assembly adopted by the valve body, and greatly compensates the problems of leakage and the like caused by the manufacturing errors of the verticality and the parallelism of the spring by the matched installation mode of the valve core and the lower valve body.
The utility model also discloses a gearbox, which comprises a gearbox body 6, wherein the safety valve is arranged on the gearbox body.
The utility model also discloses engineering machinery provided with the gearbox.
The utility model also discloses an agricultural machine which is provided with the gearbox.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (9)
1. A safety valve characterized by:
comprises an upper valve body, a lower valve body, a valve core, an elastic component and an adjusting pad;
the upper valve body is detachably connected with the lower valve body, and an oil drainage hole is formed in the side wall of the upper valve body;
the valve core is arranged in an inner channel formed by the upper valve body and the lower valve body;
an inner hole I is formed in the valve core, a plurality of adjusting cushions are placed in the inner hole I, and the pressure of the safety valve is adjusted by placing different numbers of adjusting cushions;
and an inner hole II is formed in the lower valve body, the bottom of the elastic part is abutted to the bottom surface of the inner hole II, the top of the elastic part is abutted to the adjusting pad, and the valve core is tightly abutted to the inner hole III of the upper valve body under the elasticity of the elastic part, so that the inner hole III is separated from the oil drainage hole.
2. A safety valve according to claim 1, wherein:
the upper valve body is connected with the lower valve body through threads.
3. A safety valve according to claim 2, wherein:
go up the valve body lower part and have the internal thread, lower valve body upper portion has the external screw thread, realizes dismantling the connection between them through the cooperation of internal and external screw thread.
4. A safety valve according to claim 1, wherein:
the top surface of the valve core is of a spherical surface structure and is used for forming a sealing surface with an inner hole III of the upper valve body.
5. A safety valve according to claim 1, wherein:
the elastic component adopts a spring, the pressure oil pushes the valve core to overcome the spring force of the spring, and the top surface of the valve core and the inner hole III form a gap, so that oil drainage and pressure relief are realized.
6. A safety valve according to claim 5, wherein:
the spring is a cylindrical spring.
7. A gearbox, includes the gearbox box, its characterized in that:
a safety valve as claimed in any one of claims 1 to 6 mounted on the gearbox housing.
8. A construction machine characterized in that:
a gearbox according to claim 7 is installed.
9. An agricultural machine, characterized by:
a gearbox according to claim 7 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121739085.7U CN215334679U (en) | 2021-07-29 | 2021-07-29 | Safety valve, gearbox, engineering machine and agricultural machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121739085.7U CN215334679U (en) | 2021-07-29 | 2021-07-29 | Safety valve, gearbox, engineering machine and agricultural machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215334679U true CN215334679U (en) | 2021-12-28 |
Family
ID=79573540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121739085.7U Active CN215334679U (en) | 2021-07-29 | 2021-07-29 | Safety valve, gearbox, engineering machine and agricultural machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215334679U (en) |
-
2021
- 2021-07-29 CN CN202121739085.7U patent/CN215334679U/en active Active
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