CN217029451U - Back pressure control system of hydraulic cylinder of rolling mill - Google Patents
Back pressure control system of hydraulic cylinder of rolling mill Download PDFInfo
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- CN217029451U CN217029451U CN202122371634.6U CN202122371634U CN217029451U CN 217029451 U CN217029451 U CN 217029451U CN 202122371634 U CN202122371634 U CN 202122371634U CN 217029451 U CN217029451 U CN 217029451U
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- hydraulic cylinder
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Abstract
The utility model provides a rolling mill hydraulic cylinder backpressure control system, which comprises: the hydraulic pump, the accumulator group, the overflow valve and the hydraulic cylinder; the accumulator group is connected with the hydraulic pump; one end of the overflow valve is connected with the accumulator group; and a rod cavity of the hydraulic cylinder is connected with the other end of the overflow valve, and a rodless cavity of the hydraulic cylinder is connected with the valve table. The hydraulic cylinder is driven to act by the back pressure required by the system provided by the hydraulic pump alone, and the position of a roll gap can be kept unchanged, so that the size of a billet is not influenced.
Description
Technical Field
The utility model relates to the technical field of hydraulic control, in particular to a rolling mill hydraulic cylinder backpressure control system.
Background
In a metallurgical steel rolling enterprise, a hydraulic cylinder of a rack body is impacted by rolling force in the process of rolling a steel billet by a rolling mill, and the position of a roll gap is kept unchanged by two-cavity pressure control hydraulic cylinders.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a rolling mill hydraulic cylinder back pressure control system to solve the problems of hydraulic cylinder slipping failure and blockage.
In order to achieve the purpose, the utility model provides the following scheme:
a rolling mill hydraulic cylinder backpressure control system comprising:
a hydraulic pump;
an accumulator group connected with the hydraulic pump;
one end of the overflow valve is connected with the accumulator group;
and a rod cavity of the hydraulic cylinder is connected with the other end of the overflow valve, and a rodless cavity of the hydraulic cylinder is connected with the valve table.
Preferably, the method further comprises the following steps:
and one end of the safety valve is connected with the hydraulic pump, and the other end of the safety valve is connected with the accumulator group.
Preferably, the method further comprises the following steps:
and one end of the pressure reducing valve is connected with the other end of the overflow valve, and the other end of the pressure reducing valve is connected with the rod cavity of the hydraulic cylinder.
Preferably, the accumulator group comprises a first accumulator, a second accumulator and a third accumulator; the first accumulator, the second accumulator and the third accumulator are all connected with one end of the overflow valve.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the utility model provides a rolling mill hydraulic cylinder backpressure control system, which comprises: the hydraulic pump, the accumulator group, the overflow valve and the hydraulic cylinder; the accumulator group is connected with the hydraulic pump; one end of the overflow valve is connected with the accumulator group; and a rod cavity of the hydraulic cylinder is connected with the other end of the overflow valve, and a rodless cavity of the hydraulic cylinder is connected with the valve table. The hydraulic cylinder is driven to act by the back pressure required by the system provided by the hydraulic pump alone, and the position of a roll gap can be kept unchanged, so that the size of a billet is not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic diagram of a first part of a structure of a rolling mill hydraulic cylinder backpressure control system provided by the utility model.
Fig. 2 is a second partial schematic view of the rolling mill hydraulic cylinder backpressure control system structure provided by the utility model.
Description of the symbols:
1-hydraulic pump, 2-safety valve, 3-accumulator group, 4-overflow valve, 5-pressure reducing valve, 6-hydraulic cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide a rolling mill hydraulic cylinder backpressure control system to solve the problems of hydraulic cylinder slipping not in place and blocking.
In order to achieve the purpose, the utility model provides the following scheme:
referring to fig. 1-2, a rolling mill hydraulic cylinder backpressure control system includes: the hydraulic system comprises a hydraulic pump 1, an accumulator group 3, an overflow valve 4, a hydraulic cylinder 6, a safety valve 2 and a pressure reducing valve 5.
The accumulator group 3 is connected with the hydraulic pump 1, and the hydraulic pump 1 is connected with a hydraulic oil tank and used for pumping hydraulic oil; one end of the overflow valve 4 is connected with the accumulator group 3; and a rod cavity of the hydraulic cylinder 6 is connected with the other end of the overflow valve 4, and a rodless cavity of the hydraulic cylinder 6 is connected with a valve table.
Further, one end of the safety valve 2 is connected with the hydraulic pump 1, and the other end of the safety valve 2 is connected with the accumulator group 3. One end of the reducing valve 5 is connected with the other end of the overflow valve 4, and the other end of the reducing valve 5 is connected with the rod cavity of the hydraulic cylinder 6.
It should be noted that the accumulator group 3 includes a first accumulator, a second accumulator and a third accumulator; the first accumulator, the second accumulator and the third accumulator are all connected with one end of the overflow valve. The effective volume of the accumulator in the utility model is 100L, and the pre-charging pressure is 45 bar. The pressure regulating range of the overflow valve 4 is 50-150bar, and the pressure set by the overflow valve 4 in the embodiment is preferably 55 bar. It should be noted that P represents the main oil supply of the hydraulic system, T represents the main oil return of the hydraulic system, X represents the oil supply of the pilot control valve in the pressure reducing valve, and Y represents the individual oil return of the pressure reducing valve.
The working process of the utility model is as follows: the hydraulic pump 1 extracts hydraulic oil from a hydraulic oil tank, the hydraulic oil passes through the accumulator group 3, then is adjusted to a required pressure value of 50-150bar through the overflow valve 4, and finally reaches a rod cavity of the hydraulic cylinder 6 through the pressure reducing valve 5 to drive the hydraulic cylinder 6 to act. The hydraulic cylinder back pressure control system provided by the utility model can be used for supplying oil to the hydraulic cylinder 6 through the additionally arranged hydraulic pump 1 which independently provides back pressure required by the system, the safety valve 2, the energy accumulator and the overflow valve 4 and then the pressure reducing valve 5 (mechanical type), so that the problem that the hydraulic cylinder cannot slide in place due to pressure fluctuation of the existing hydraulic cylinder back pressure control system can be solved.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the utility model provides a rolling mill hydraulic cylinder backpressure control system, which comprises: the hydraulic pump, the accumulator group, the overflow valve and the hydraulic cylinder; the accumulator group is connected with the hydraulic pump; one end of the overflow valve is connected with the accumulator group; and a rod cavity of the hydraulic cylinder is connected with the other end of the overflow valve, and a rodless cavity of the hydraulic cylinder is connected with the valve table. The hydraulic cylinder is driven to act by independently providing back pressure required by the system through the hydraulic pump, and the position of a roll gap can be kept unchanged, so that the size of a steel billet is not influenced.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the foregoing, the description is not to be taken in a limiting sense.
Claims (4)
1. A rolling mill hydraulic cylinder backpressure control system, characterized in that includes:
a hydraulic pump;
an accumulator bank connected with the hydraulic pump;
one end of the overflow valve is connected with the accumulator group;
and a rod cavity of the hydraulic cylinder is connected with the other end of the overflow valve, and a rodless cavity of the hydraulic cylinder is connected with the valve table.
2. The rolling mill hydraulic cylinder backpressure control system of claim 1, further comprising:
and one end of the safety valve is connected with the hydraulic pump, and the other end of the safety valve is connected with the accumulator group.
3. The rolling mill hydraulic cylinder backpressure control system of claim 2, further comprising:
and one end of the pressure reducing valve is connected with the other end of the overflow valve, and the other end of the pressure reducing valve is connected with the rod cavity of the hydraulic cylinder.
4. The rolling mill hydraulic cylinder backpressure control system of claim 1, wherein the accumulator bank comprises a first accumulator, a second accumulator, and a third accumulator; the first accumulator, the second accumulator and the third accumulator are all connected with one end of the overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122371634.6U CN217029451U (en) | 2021-09-29 | 2021-09-29 | Back pressure control system of hydraulic cylinder of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122371634.6U CN217029451U (en) | 2021-09-29 | 2021-09-29 | Back pressure control system of hydraulic cylinder of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217029451U true CN217029451U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122371634.6U Active CN217029451U (en) | 2021-09-29 | 2021-09-29 | Back pressure control system of hydraulic cylinder of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217029451U (en) |
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2021
- 2021-09-29 CN CN202122371634.6U patent/CN217029451U/en active Active
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