CN212577270U - Hydraulic stretching device - Google Patents
Hydraulic stretching device Download PDFInfo
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- CN212577270U CN212577270U CN202021184720.5U CN202021184720U CN212577270U CN 212577270 U CN212577270 U CN 212577270U CN 202021184720 U CN202021184720 U CN 202021184720U CN 212577270 U CN212577270 U CN 212577270U
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Abstract
The utility model discloses a hydraulic stretching device, including the stretcher body, this internal oil tank that is equipped with of stretcher, piston and stretching block, piston one side links to each other through high-pressure oil import and high-pressure fuel pipe and oil tank, high-pressure oil import and high-pressure fuel pipe junction, the cover is equipped with the oil feed sleeve pipe on the high-pressure oil import, oil feed sleeve intraductal side is equipped with the filter screen, piston top one side is equipped with the pressure relief valve, the piston opposite side is equipped with the extension connecting block, the extension block in the extension connecting block and stretcher body outside links to each other, the extension connecting block periphery is equipped with the spring, the piston bottom is equipped with unloads the hydraulic fluid port, unload the hydraulic fluid port with oil unload in the oil catch bowl of below. The utility model discloses simple structure effectively improves tensile effect to cyclic utilization high pressure oil reduces use cost, improves the efficiency of enterprise.
Description
Technical Field
The utility model relates to the field of machinary, specifically a hydraulic stretching device.
Background
The hydraulic bolt tensioner is mainly used for fastening large-diameter bolts and nuts which need to bear large acting force, so that the labor intensity of operators is reduced, the assembling time is reduced, and the hydraulic bolt tensioner is very wide in application. The previous stretcher has the defects that the stretching effect is convenient, the improvement is needed, the stretching efficiency is low, high-pressure oil is dumped after being used once, the waste is high, the use cost is high, and therefore, the corresponding improvements on the previous conditions are needed to improve the enterprise income.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses a hydraulic stretching device.
The technical scheme of the utility model is that: the utility model provides a hydraulic stretching device, including the stretcher body, this internal oil tank that is equipped with of stretcher, piston and stretching block, piston one side links to each other through high-pressure oil import and high-pressure fuel pipe and oil tank, high-pressure oil import and high-pressure fuel pipe junction, the cover is equipped with the oil feed sleeve pipe on the high-pressure oil import, oil feed sleeve pipe inboard is equipped with the filter screen, piston top one side is equipped with the pressure relief valve, the piston opposite side is equipped with the extension block, the extension block in extension block and the stretcher body outside links to each other, the extension block periphery is equipped with the spring, the piston bottom is equipped with unloads the hydraulic fluid port, unload the hydraulic fluid port and unload in the oil catch bowl of below, the.
Furthermore, two ends of the spring are respectively abutted to the piston and the inner side wall of the stretcher body, and the spring is in a compression state under the non-working state.
Furthermore, the oil discharging port is provided with an oil discharging valve for opening and closing the oil discharging port.
Further, the hydraulic oil pump is connected with an oil inlet of the oil tank through a pipeline and the bottom of the oil collecting tank respectively.
Further, an oil outlet is arranged below an oil inlet of the oil tank, the oil outlet is a pipeline with a downward radian, and the bottom surface of the oil tank is higher than the oil outlet.
The utility model discloses an useful part: the utility model discloses simple structure effectively improves tensile effect to cyclic utilization high pressure oil reduces use cost, improves the efficiency of enterprise.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: 1. stretcher body, 2, piston, 21, high-pressure oil import, 22, oil feed sleeve pipe, 23, filter screen, 3, oil tank, 31, high-pressure oil pipe, 32, oil inlet, 33, oil-out, 4, pressure relief valve, 5, tensile connecting block, 6, spring, 7, tensile piece, 8, unload the hydraulic oil mouth, 9, unload the valve, 10, the oil catch bowl, 11, hydraulic oil pump.
Detailed Description
In order to deepen the understanding of the present invention, the following detailed description is given with reference to the accompanying drawings, which are only used for explaining the present invention and do not constitute a limitation to the protection scope of the present invention.
As shown in fig. 1, a hydraulic stretching device comprises a stretcher body 1, an oil tank 3, a piston 2 and a stretching block are arranged in the stretcher body 1, one side of the piston 2 is connected with the oil tank 3 through a high-pressure oil inlet 21 and a high-pressure oil pipe 31, the joint of the high-pressure oil inlet 21 and the high-pressure oil pipe 31 is sleeved with an oil inlet sleeve 22, the inner side of the oil inlet sleeve 22 is provided with a filter screen 23 which can filter circulating hydraulic oil to prevent impurities or particles from entering, one side of the top of the piston 2 is provided with a pressure relief valve 4 which can release pressure properly when the internal pressure is overlarge, the other side of the piston 2 is provided with a stretching connecting block 7, the stretching connecting block 5 is connected with the stretching block 7 on the outer side of the stretcher body 1, the periphery of the stretching connecting block 5 is provided with a spring 6, and two ends of the spring 6 are respectively, when the spring is in a compressed state in a non-working state and high-pressure oil enters, the spring slowly tends to a stretched state at the same time, a certain pretightening force can be effectively generated on the bolt, greater power is provided for the bolt, and the working efficiency is improved;
the piston 2 bottom is equipped with the oil discharge port 8, be equipped with on the oil discharge port 8 and be used for carrying on the oil discharge valve 9 to its switch, oil discharge port 8 unloads oil in the oil catch bowl 10 of below, the oil inlet 32 in the outside of oil catch bowl 10 bottom through hydraulic oil pump 11 and oil tank 3 links to each other, hydraulic oil pump 11 links to each other with oil inlet 32 of oil tank 3 through the bottom of pipeline respectively oil catch bowl 10, the oil-out 33 is equipped with to the oil inlet below of oil tank 3, oil-out 33 is the pipeline that is equipped with the radian downwards, the oil tank bottom surface is higher than the oil-out, store the oil of inside through the oil catch bowl, then go into the oil tank through the hydraulic oil pump with the oil pump in, can carry out certain reuse to.
Claims (5)
1. The utility model provides a hydraulic stretching device, includes the stretcher body, its characterized in that: this internal oil tank, piston and the tensile piece of being equipped with of elongator, piston one side links to each other through high-pressure oil import and high-pressure fuel pipe and oil tank, high-pressure oil import and high-pressure fuel pipe junction, the cover is equipped with the oil feed sleeve pipe on the high-pressure oil import, oil feed sleeve pipe inboard is equipped with the filter screen, piston top one side is equipped with the pressure relief valve, the piston opposite side is equipped with the extension connecting block, the tensile piece in the extension connecting block and the elongator body outside links to each other, the extension connecting block periphery is equipped with the spring, the piston bottom is equipped with unloads the hydraulic fluid port, unload the hydraulic fluid port and unload in the oil catch bowl of below, the oil catch bowl bottom links to.
2. A hydraulic stretching apparatus according to claim 1, wherein: the two ends of the spring are respectively abutted to the piston and the inner side wall of the stretcher body, and the spring is in a compressed state under a non-working state.
3. A hydraulic stretching apparatus according to claim 1, wherein: and the oil discharging port is provided with an oil discharging valve for opening and closing the oil discharging port.
4. A hydraulic stretching apparatus according to claim 1, wherein: and the hydraulic oil pump is respectively connected with the bottom of the oil collecting tank and the oil inlet of the oil tank through pipelines.
5. A hydraulic stretching apparatus according to claim 1, wherein: an oil outlet is arranged below an oil inlet of the oil tank, the oil outlet is a pipeline with a downward radian, and the bottom surface of the oil tank is higher than the oil outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021184720.5U CN212577270U (en) | 2020-06-23 | 2020-06-23 | Hydraulic stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021184720.5U CN212577270U (en) | 2020-06-23 | 2020-06-23 | Hydraulic stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212577270U true CN212577270U (en) | 2021-02-23 |
Family
ID=74651661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021184720.5U Active CN212577270U (en) | 2020-06-23 | 2020-06-23 | Hydraulic stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212577270U (en) |
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2020
- 2020-06-23 CN CN202021184720.5U patent/CN212577270U/en active Active
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