CN206839979U - A kind of fluid pressure type pre-tightening fastener - Google Patents
A kind of fluid pressure type pre-tightening fastener Download PDFInfo
- Publication number
- CN206839979U CN206839979U CN201720788568.3U CN201720788568U CN206839979U CN 206839979 U CN206839979 U CN 206839979U CN 201720788568 U CN201720788568 U CN 201720788568U CN 206839979 U CN206839979 U CN 206839979U
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- Prior art keywords
- binding clip
- hydraulic
- hydraulic cylinder
- tightening
- cylinder
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Links
- 239000012530 fluid Substances 0.000 title abstract description 8
- 230000003068 static effect Effects 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000036964 tight binding Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
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- Clamps And Clips (AREA)
Abstract
The utility model discloses a kind of fluid pressure type pre-tightening fastener, including hydraulic power unit (1), hydraulic cylinder (3), dynamic clamping binding clip (5) and quiet clamping binding clip (8)；Wherein, hydraulic power unit (1) is communicated to the oil inlet and oil-out of hydraulic cylinder (3) by high-pressure oil pipe, the dynamic piston rod external part for clamping binding clip (5) and being fixedly mounted on hydraulic cylinder (3), quiet clamping binding clip (8) is fixedly mounted on the cylinder body of hydraulic cylinder (3) by quiet binding clip and pressure cylinder connecting component (7), and quiet clamping binding clip (8) clamps binding clip (5) in same axially opposing setting with moving.The utility model is easily operated, time saving and energy saving, efficiency high, solves potential safety hazard, compact-sized, intensity is good, and design science is reasonable, good manufacturability, it is versatile, improve the operating efficiency of drawstring pre-tightening fastening, reduce labor intensity, fully meet new demand.
Description
Technical Field
The utility model relates to a fluid pressure type is received in advance and is tightly fixed device, especially relates to one kind and is used for power transformer product iron core stretching strap to carry out fluid pressure type and receive in advance tightly fixed device, the hydraulic type is tight pincers of receiving in advance again before the fastening.
Background
In the production and manufacturing process of a power transformer product, in order to ensure the mechanical strength of an iron yoke of an iron core, ensure the integral rigidity of the iron core, reduce noise and form a basic framework of a transformer body of the power transformer product, a drawstring fastening structure is adopted, and the iron yoke of the transformer iron core is firmly fastened through a drawstring and a clamping piece to form a certain clamping force.
This stretching strap fastening structure does: the epoxy glass fiber belt (with certain tensile strength) is wound in a reciprocating mode to form a pull belt, the two ends of the pull belt are inserted into pull belt fastening shafts, and the pull belt fastening shafts are connected and fastened through bolts and nuts.
In order to enable the drawstring to form a certain fastening clamping force for the iron yoke after being fastened, the length of the designed drawstring is smaller than the circumference of the iron yoke (because the epoxy glass fiber band has a certain tensile strength), so that when a fastening drawstring shaft is connected, the drawstring needs to be pre-tightened to assemble the fastening bolt, otherwise, the fastening bolt cannot be connected and fastened to be assembled.
At present, the manual pre-tightening is carried out to a mechanical pre-tightening tool who uses, has following shortcoming: the hydraulic pre-tightening device is difficult to operate, wastes time and labor, is low in efficiency, has potential safety hazards, and is developed in order to overcome the defects of the mechanical manual pre-tightening device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide one kind and be used for power transformer product iron core stretching strap to carry out fluid pressure type pre-tightening tightly solid device before the fastening, the fluid pressure type pre-tightening pincers again, can effectively replace the manual pre-tightening fastening operation when the frock that tightens up of screw rod mechanical type carries out transformer product iron core stretching strap assembly.
The utility model adopts the following technical scheme:
a hydraulic pre-tightening fastening device comprises a hydraulic pump station, a hydraulic cylinder, a movable clamping binding clip and a static clamping binding clip; wherein,
the hydraulic pump station is communicated to an oil inlet and an oil outlet of the hydraulic cylinder through a high-pressure oil pipe, the movable clamping binding clip is fixedly installed at the extending end of a piston rod of the hydraulic cylinder, the static clamping binding clip is fixedly installed on a cylinder body of the hydraulic cylinder through the static binding clip and a hydraulic cylinder connecting piece, and the static clamping binding clip and the movable clamping binding clip are oppositely arranged in the same axial direction.
The utility model discloses a further improvement lies in, still including setting up the hand-held type handle on quiet binding clip and pneumatic cylinder connecting piece.
The utility model discloses a further improvement lies in, moves and presss from both sides all to be provided with anti-skidding locating pin on the relative side that sets up of tight binding clip and quiet tight binding clip.
The utility model discloses a further improvement lies in, moves the longitudinal section that presss from both sides tight binding clip and quiet tight binding clip and all is the U type form.
The utility model has the advantages that:
the utility model provides a fluid pressure type is received tightly solid device in advance, easily operation, labour saving and time saving, it is efficient, solved the potential safety hazard, compact structure, intensity is good, design scientific and reasonable, the manufacturability is good, and the commonality is strong, has improved the stretching strap and has tightened up the work efficiency of fastening in advance, has reduced intensity of labour, has satisfied new demand completely.
Furthermore, the hand-held handle is convenient for an operator to grasp the handle by hands and operate the device to pre-tighten the draw tape.
Furthermore, the anti-skidding positioning pin is inserted into the positioning pin hole in the fixed shaft of the drawstring in the operation process, so that the fixed shaft of the drawstring cannot slip from the driven static tong head in the pre-clamping process of the drawstring, potential safety hazards are brought to an operator, and people are prevented from being bounced after the fixed shaft of the drawstring slips.
Drawings
Fig. 1 is a front view of a hydraulic pre-tightening device according to the present invention;
fig. 2 is a left side view of the hydraulic pre-tightening device of the present invention.
In the figure: 1-hydraulic pump station, 2-high pressure oil pipe, 3-hydraulic cylinder, 4-hand-held handle, 5-dynamic clamping tong head, 6-antiskid positioning pin, 7-static tong head and hydraulic cylinder connecting piece, and 8-static clamping tong head.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model provides a tight solid device of fluid pressure type receipts in advance, including hydraulic power unit 1, high pressure fuel pipe 2, pneumatic cylinder 3, hand-held type handle 4, move and press from both sides tight binding clip 5, anti-skidding locating pin 6, quiet binding clip and pneumatic cylinder connecting piece 7 and quiet tight binding clip 8 of clamp.
The hydraulic pump station 1 provides clamping power for the pre-tightening pull belt, the high-pressure oil pipe 2 transmits the power output by the hydraulic pump station to the hydraulic cylinder, the hydraulic cylinder 3 receives the hydraulic power provided by the pump station, the movable clamping tong head 5 is pushed to move forwards, the distance between the fixed shafts of the two pull belts is shortened, the pull belt is pre-tightened, and the mounting and the assembly of a fastening bolt are facilitated; the hand-held handle 4 is convenient for an operator to grasp the handle by hands and operate the device to pre-tighten the drawstring; the movable clamping tong head 5 moves forwards under the driving of the hydraulic cylinder 3, and pre-tightens the drawstring together with the static clamping tong head 8; in the operation process of the anti-skidding positioning pin 6, the anti-skidding positioning pin 6 is inserted into the positioning pin hole on the drawstring fixing shaft, so that the drawstring fixing shaft cannot slip off from the driven static tong head in the process of implementing the pre-clamping of the drawstring, potential safety hazards are brought to an operator, and the drawstring fixing shaft is prevented from jumping to people after slipping off; the static binding clip and the hydraulic cylinder connecting piece 7 form a connecting framework of the device; the static clamping binding clip 8 and the dynamic clamping binding clip 5 form a certain clamping force together, so that the purpose of pre-tightening the pulling belt is achieved.
When the device works, a transformer iron core iron yoke drawstring is wound on an iron yoke according to a designed position, a drawstring fixing shaft is penetrated at two ends of the drawstring, a portable hydraulic pre-tightening and fixing device is carried out, a moving tong head and a moving tong head face downwards, a drawstring fixing shaft is arranged between the two tong heads, a inching hydraulic pump station 1 enables the moving tong head 5 to move forwards, 4 anti-skidding positioning pins 6 on the moving tong head and the moving tong head 7 are inserted into positioning pin holes on the drawstring fixing shaft to carry out fixed positioning, then the hydraulic pump station 1 is continued to be inching to enable the moving tong head 5 to continue to move forwards until the drawstring forms a certain clamping force (reaching a designed value), a connecting bolt is penetrated into a connecting hole of the drawstring fixing shaft, a fastening nut reaches the designed clamping and fastening force, the hydraulic pump station 1 is inching hydraulic pressure to enable the moving tong head 5 to move backwards, so that, removing the device.
Claims (4)
1. A hydraulic pre-tightening and fastening device is characterized by comprising a hydraulic pump station (1), a hydraulic cylinder (3), a movable clamping tong head (5) and a static clamping tong head (8); wherein,
the hydraulic pump station (1) is communicated to an oil inlet and an oil outlet of the hydraulic cylinder (3) through a high-pressure oil pipe, the movable clamping head (5) is fixedly installed at the extending end of a piston rod of the hydraulic cylinder (3), the static clamping head (8) is fixedly installed on a cylinder body of the hydraulic cylinder (3) through the static clamping head and a hydraulic cylinder connecting piece (7), and the static clamping head (8) and the movable clamping head (5) are oppositely arranged in the same axial direction.
2. A hydraulic pre-tightening device according to claim 1, further comprising a hand-held handle (4) provided on the stationary jaw and cylinder connection (7).
3. The hydraulic pre-tightening device according to claim 1, wherein the movable clamping jaw (5) and the static clamping jaw (8) are provided with anti-skid locating pins (6) on opposite sides.
4. A hydraulic pre-tightening device according to claim 1, wherein the movable clamping jaw (5) and the stationary clamping jaw (8) are U-shaped in longitudinal cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788568.3U CN206839979U (en) | 2017-06-30 | 2017-06-30 | A kind of fluid pressure type pre-tightening fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788568.3U CN206839979U (en) | 2017-06-30 | 2017-06-30 | A kind of fluid pressure type pre-tightening fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206839979U true CN206839979U (en) | 2018-01-05 |
Family
ID=60804222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720788568.3U Active CN206839979U (en) | 2017-06-30 | 2017-06-30 | A kind of fluid pressure type pre-tightening fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206839979U (en) |
-
2017
- 2017-06-30 CN CN201720788568.3U patent/CN206839979U/en active Active
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| GR01 | Patent grant |