CN211251410U - Large-table-board small-tonnage hydraulic press - Google Patents
Large-table-board small-tonnage hydraulic press Download PDFInfo
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- CN211251410U CN211251410U CN201921845867.1U CN201921845867U CN211251410U CN 211251410 U CN211251410 U CN 211251410U CN 201921845867 U CN201921845867 U CN 201921845867U CN 211251410 U CN211251410 U CN 211251410U
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Abstract
The utility model relates to a large-table-board small-tonnage hydraulic press, which comprises a workbench, an upper beam and a slide block, wherein the upper beam is arranged above the workbench and is opposite to the workbench and is fixedly connected with each other through a plurality of stand columns; the three main oil cylinders are arranged on the upper beam, are respectively connected with the sliding block and jointly drive the sliding block to move relative to the workbench; the central master cylinder is connected with the hydraulic control system through a central master cylinder process pipeline and a central master cylinder return pipeline respectively to form a loop, and the master cylinders on the two sides are connected with the hydraulic control system through a side master cylinder process pipeline and a side master cylinder return pipeline respectively to form a loop. Reasonable in design, simple structure through increasing the energy storage ware to balanced slider partly weight, thereby under the condition that does not increase the consumption, satisfy hydraulic press return stroke speed demand.
Description
Technical Field
The utility model relates to the technical field of hydraulic pressure, concretely relates to big mesa small-tonnage hydraulic press.
Background
The traditional large-table small-tonnage press adopts a general design, an oil pump motor is selected according to the tonnage of a main cylinder and the pressing speed, and the weight of a large-table-top sliding block is increased, so that the tonnage of a return cavity of an oil cylinder is generally and directly increased in normal return, namely the area of a return cylinder is increased, the return speed is greatly reduced under the condition of not increasing a motor oil pump, the return requirement cannot be met, and the power consumption is greatly increased only by increasing the motor oil pump in order to improve the return speed.
Disclosure of Invention
In order to solve the problems, the utility model provides a large-table-board small-tonnage hydraulic machine.
The technical scheme of the utility model:
a large-table-board small-tonnage hydraulic machine comprises a workbench, an upper beam and a sliding block, wherein the upper beam is arranged above the workbench, is opposite to the workbench and is fixedly connected with the workbench through a plurality of stand columns; the three main oil cylinders are arranged on the upper beam, are respectively connected with the sliding block and jointly drive the sliding block to move relative to the workbench; an oil inlet of the central main oil cylinder is connected with the hydraulic control system through a central main oil cylinder process pipeline, an oil return port of the central main oil cylinder is connected with the hydraulic control system through a central main oil cylinder return pipeline, and the energy accumulator is connected with a central main oil cylinder return pipeline; oil inlets of the main oil cylinders on the two sides are respectively connected with the hydraulic control system through a process pipeline of the main oil cylinder on the side, and oil return ports of the main oil cylinders on the two sides are respectively connected with the hydraulic control system through a return pipeline of the main oil cylinder on the side.
During return stroke, a part of the weight of the sliding block is balanced through the central main oil cylinder and the energy accumulator; thus, the purpose of increasing the return speed is achieved. Meanwhile, when the central cylinder is fast lowered, hydraulic oil in the main oil cylinder of the central cylinder is transformed into the energy accumulator, and the pressure in the energy accumulator is increased to a certain extent along with the fast lowering, so that when the central cylinder is fast lowered and the central cylinder is slow lowered, a certain weight of the sliding block is balanced, and the energy accumulator has compressibility, thereby playing a good role in buffering impact; preferably, high-pressure oil in the lower cavity of the central main oil cylinder is stored in the energy accumulator, the force generated by the hydraulic oil is designed to be two thirds of the weight of the sliding block, the pressure can be adjusted according to needs, the tonnage of the main oil cylinders on two sides is one third of the weight of the sliding block, two thirds of the weight of the sliding block is stably dropped through the central oil cylinder and the energy accumulator, the tonnage of the return cylinder is designed to be relatively lower by two thirds, the area is also smaller by two thirds, and the speed is two times faster during return.
The hydraulic control system is formed by connecting an oil pump motor set and a hydraulic valve set; the hydraulic valve group is formed by combining and connecting an oil cylinder proportion pressure regulating valve, an oil cylinder lower cavity supporting valve, an oil cylinder lower cavity quick oil discharge valve, an oil cylinder lower cavity secondary supporting valve, an oil cylinder upper cavity oil inlet valve, an oil valve lower cavity oil inlet valve and a liquid filling valve control valve.
The plunger pump is arranged in the main oil cylinder, the plunger cylinder is formed by hollowing out an inner cavity in a piston of the main oil cylinder, a plunger is connected in the inner cavity, and an oil inlet hole is formed in the piston;
the plunger cylinder pushes the plunger by feeding oil through the oil inlet hole, and the movement is synchronous with the main oil cylinder, so that the power of the main oil cylinder is increased, and the piston stroke of the main oil cylinder is accelerated.
And two upper beams are also fixedly provided with buffer oil cylinders.
The buffer oil cylinder comprises a cylinder body with an opening at the upper end, a piston is arranged in an inner cavity of the cylinder body, the center of the piston is connected with a piston rod extending downwards, the lower end of the piston rod extends out of the center of a bottom cover of the buffer oil cylinder, and an oil cylinder buffer block is screwed at the lower end of the piston rod; the left side and the right side of the sliding block are symmetrically connected with sliding block buffer stop blocks which extend outwards, and the sliding block buffer stop blocks are respectively sleeved on the lower portion of the piston rod of the buffer oil cylinder and located above the oil cylinder buffer block.
The buffer oil cylinder is arranged on the upper beam, and a piston rod of the buffer oil cylinder does not move along with the sliding block, so that the weight of the buffer oil cylinder moving up and down along with the sliding block is reduced; when the sliding block is fast lowered, the sliding block buffer stop block is sleeved on the piston rod of the buffer oil cylinder in an empty mode to slide, when the sliding block presser enters the buffer position, the sliding block buffer stop block contacts the oil cylinder buffer block, and the buffer oil cylinder plays a buffer role at the moment. When the sliding block returns, pressure oil enters the lower cavity of the buffer oil cylinder, the piston of the buffer oil cylinder moves upwards, and the piston rod of the buffer oil cylinder upwards supports the sliding block buffer stop block of the sliding block through the oil cylinder buffer block, so that the weight of the sliding block and the mould is balanced, the load of the return stroke is reduced, and the return force is improved.
The utility model discloses the advantage is, reasonable in design, simple structure through increasing the energy storage ware to balanced slider partly weight, thereby under the condition that does not increase the consumption, satisfy hydraulic press return stroke speed demand.
Drawings
FIG. 1 is a schematic structural diagram of a large-table small-tonnage hydraulic machine.
FIG. 2 is a hydraulic control system diagram of a large-table small-tonnage hydraulic machine.
Fig. 3 is a schematic diagram of the structure of the master cylinder.
Fig. 4 is a schematic structural diagram of a buffer cylinder.
In the figure, an upper beam 2 of a workbench 1, a sliding block 4, a vertical column 3, a main oil cylinder 5, a hydraulic control system 6, an oil pump motor set 6-1, a hydraulic valve set 6-2 and a buffer oil cylinder 7 are arranged.
Detailed Description
As shown in fig. 1-4, the hydraulic machine with a large table top and a small tonnage comprises a workbench 1, an upper beam 2 and a slide block 4, wherein the upper beam 2 is arranged above the workbench 1, is opposite to the workbench 1 and is fixedly connected with the workbench through a plurality of upright posts 3, the slide block 4 is fixedly arranged on the upper beam 2 through a main oil cylinder 5 and is positioned between the upper beam 2 and the workbench 1, and the hydraulic machine also comprises a hydraulic control system 6; the number of the main oil cylinders 5 is three, the main oil cylinders are arranged on the upper beam 2 and are respectively connected with the sliding block 4, and the main oil cylinders drive the sliding block 4 to move relative to the workbench 1 together; an oil inlet of the central main oil cylinder is connected with the hydraulic control system 6 through a central main oil cylinder process pipeline, an oil return port of the central main oil cylinder is connected with the hydraulic control system 6 through a central main oil cylinder return pipeline, and the energy accumulator 7 is connected with the central main oil cylinder return pipeline; oil inlets of the main oil cylinders on the two sides are respectively connected with the hydraulic control system 6 through a process pipeline of the main oil cylinder on the side, and oil return ports of the main oil cylinders on the two sides are respectively connected with the hydraulic control system 6 through a return pipeline of the main oil cylinder on the side; the main oil cylinder 5 is a pressurization oil cylinder; the hydraulic control system 6 is formed by connecting an oil pump motor set 6-1 and a hydraulic valve set 6-2; the hydraulic valve group 6-2 is formed by combining and connecting an oil cylinder proportion pressure regulating valve, an oil cylinder lower cavity supporting valve, an oil cylinder lower cavity quick oil discharge valve, an oil cylinder lower cavity secondary supporting valve, an oil cylinder upper cavity oil inlet valve, an oil valve lower cavity oil inlet valve and a liquid filling valve control valve. A plunger pump is arranged in the main oil cylinder 5, the plunger cylinder is formed by hollowing an inner cavity in a piston of the main oil cylinder 5, a plunger is connected in the inner cavity, and an oil inlet hole is formed in the piston; two of the upper beams 2 are also fixedly provided with buffer oil cylinders 7, each buffer oil cylinder 7 comprises a cylinder body with an opening at the upper end, a piston is arranged in an inner cavity of each cylinder body, the center of each piston is connected with a piston rod extending downwards, the lower end of each piston rod extends out of the center of the bottom cover of each buffer oil cylinder, and the lower end head of each piston rod is screwed with an oil cylinder buffer block; the left side and the right side of the sliding block are symmetrically connected with sliding block buffer stop blocks which extend outwards, and the sliding block buffer stop blocks are respectively sleeved on the lower portion of the piston rod of the buffer oil cylinder and located above the oil cylinder buffer block.
Because of the limited character expression, there exists an infinite concrete structure objectively, for those skilled in the art, without departing from the principle of the present invention, a plurality of improvements, decorations or changes can be made, and the above technical features can be combined in a proper way; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Claims (5)
1. A large-table-board small-tonnage hydraulic machine comprises a workbench, an upper beam and a sliding block, wherein the upper beam is arranged above the workbench, is opposite to the workbench and is fixedly connected with the workbench through a plurality of stand columns; the hydraulic lifting device is characterized in that the number of the main oil cylinders is three, the main oil cylinders are arranged on the upper beam and are respectively connected with the sliding block, and the sliding blocks are driven to move relative to the workbench together; the central master cylinder is connected with the hydraulic control system through a central master cylinder process pipeline and a central master cylinder return pipeline respectively to form a loop, and the master cylinders on the two sides are connected with the hydraulic control system through a side master cylinder process pipeline and a side master cylinder return pipeline respectively to form a loop.
2. The large-table-board small-tonnage hydraulic machine as claimed in claim 1, wherein the hydraulic control system is formed by connecting an oil pump motor set and a hydraulic valve set; the hydraulic valve group is formed by combining and connecting an oil cylinder proportion pressure regulating valve, an oil cylinder lower cavity supporting valve, an oil cylinder lower cavity quick oil discharge valve, an oil cylinder lower cavity secondary supporting valve, an oil cylinder upper cavity oil inlet valve, an oil valve lower cavity oil inlet valve and a liquid filling valve control valve.
3. The large-table-board small-tonnage hydraulic machine as claimed in claim 1, characterized in that a plunger pump is arranged in the main cylinder, the plunger cylinder is formed by hollowing out an inner cavity in the piston of the main cylinder, a plunger is connected in the inner cavity, and an oil inlet is arranged in the piston.
4. The large-table-board small-tonnage hydraulic machine as recited in claim 1, wherein two of the upper beams are also fixedly provided with a buffer cylinder.
5. The large-table-board small-tonnage hydraulic machine as claimed in claim 4, wherein the buffer cylinder comprises a cylinder body with an open upper end, a piston is arranged in an inner cavity of the cylinder body, a piston rod extending downwards is connected to the center of the piston, the lower end of the piston rod extends out of the center of a bottom cover of the buffer cylinder, and a cylinder buffer block is screwed on the lower end of the piston rod; the left side and the right side of the sliding block are symmetrically connected with sliding block buffer stop blocks which extend outwards, and the sliding block buffer stop blocks are respectively sleeved on the lower portion of the piston rod of the buffer oil cylinder and located above the oil cylinder buffer block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845867.1U CN211251410U (en) | 2019-10-30 | 2019-10-30 | Large-table-board small-tonnage hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845867.1U CN211251410U (en) | 2019-10-30 | 2019-10-30 | Large-table-board small-tonnage hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211251410U true CN211251410U (en) | 2020-08-14 |
Family
ID=71956025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921845867.1U Expired - Fee Related CN211251410U (en) | 2019-10-30 | 2019-10-30 | Large-table-board small-tonnage hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211251410U (en) |
-
2019
- 2019-10-30 CN CN201921845867.1U patent/CN211251410U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 Termination date: 20211030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |