CN1047988A - Portable cold drawing device for prestressed steel bars - Google Patents
Portable cold drawing device for prestressed steel bars Download PDFInfo
- Publication number
- CN1047988A CN1047988A CN 90103751 CN90103751A CN1047988A CN 1047988 A CN1047988 A CN 1047988A CN 90103751 CN90103751 CN 90103751 CN 90103751 A CN90103751 A CN 90103751A CN 1047988 A CN1047988 A CN 1047988A
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- cold
- drawn
- jack
- leading screw
- bar
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Abstract
The invention discloses a kind of improved portable cold drawing device for prestressed steel bars, be suitable for the deformed bar of cold drawn diameter 18～32mm.It is to make cold drawn power by YC-60 type jack, on-the-spot makes heavy frame with hoisting frame, adds a leading screw in the center hole of jack, and leading screw links to each other with wanting cold drawn deformed bar, on leading screw, respectively there is a back-clamping spiral disk jack front and back.When cold drawn, the jack tension cylinder withstands rear back-clamping spiral disk and drives the leading screw cold drawn bar, and when reaching range, with front back-clamping spiral disk anchoring temporarily reinforcing bar, jack resets, and repeats, till meeting the requirements of steel bar cold-drawn stretch value and cold-drawn control stress.
Description
The present invention relates to a kind of improved construction site and give stress steel bar cold-drawn device, the YC-60 type jack that particularly a kind of usefulness is given the stress reinforced bar stretching gives the device of stress steel bar cold-drawn.Be applicable to that the cold drawn diameter 18～32mm's in job site gives the stress reinforcing bar.
The existing stress steel bar cold-drawn device that gives has three kinds: the cold drawn device of (1) mechanical type: be made up of winch, assembly pulley, steel wire rope, dynamometer and concrete earth anchor.This device is the most commonly used.Its weak point is: it is many to take equipment, and the preparation complexity is installed, and consumes concrete, and unsafe factor is many, cold drawn expense height.(2) the cold drawn device of forming by long stroke hydraulic jack, high-pressure oil pump and heavy frame of hydraulic pressure.Its shortcoming is: long stroke hydraulic jack purposes is single, costs an arm and a leg.(3) the cold drawn device of forming by YC-60 type jack, high-pressure oil pump, heavy frame and coupling assembling of hydraulic pressure.When cold drawn, the stress reinforcing bar that gives that will be cold drawn directly links to each other with the pull bar of YC-60 type jack, because the stretch value during steel bar cold-drawn is several times of the jack stroke, whenever pull a stroke, with the reinforcing bar anchoring temporarily, need between heavy frame and jack spike, to add one deck and prop up pad, move behind the jack, repeat like this, till cold stretch long value that reaches the reinforcing bar requirement and proof stress.Its major defect is: cold drawn work efficiency is low, and is dangerous.
The objective of the invention is to provide a kind of improved construction site to give stress steel bar cold-drawn device, it can utilize the tensioning equipment that gives the stress reinforcing bar to make cold drawn power, guaranteeing handling safety, saves under the condition of cold drawn expense, realizes giving the cold drawn of stress reinforcing bar.
The present invention is achieved in that and adds a leading screw in the center hole of YC-60 type jack, on the leading screw, respectively there is a back-clamping spiral disk front and back of jack, reinforcing bar is with after leading screw is connected, before the back-clamping spiral disk that revolves behind the jack be close to jack, start high-pressure oil pump, open filling valve, move behind the jack tension cylinder, cold drawn bar, revolve the preceding back-clamping spiral disk of jack before the cold drawn limit, limit, when the jack stroke reaches maximum, close filling valve, make the preceding back-clamping spiral disk of jack be close to the heavy frame baffle plate, open oil return valve, the reach of jack tension cylinder resets, and has so promptly finished a cold drawn stroke, repeat several cold drawn strokes, till meeting the requirements of steel bar cold-drawn stretch value and cold-drawn control stress.
Utilization of the present invention is given stress reinforced bar stretching machinery and is made cold drawn power, utilizes the hoisting frame of job site to make heavy frame, the performance a tractor serves several purposes, and specific purpose tool has only a rhizoid thick stick, so save cold drawn expense; In the cold drawing process, jack directly contacts with heavy frame all the time, need not add a pad, just moves behind the leading screw, and cold drawn bar is positioned at the heavy frame of sealing again simultaneously, so safe in utilization; Steel bar cold-drawn elongation and Stress Control all can be when oil pump be operated directly monitoring, so easy and simple to handle, precise control.
The concrete structure of invention is provided by following examples and accompanying drawing thereof.
Fig. 1 is the front view of a kind of concrete structure of the present invention.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
With reference to accompanying drawing, this device has a leading screw (2), there are the square toes that can make leading screw be convenient to rotate (1) the leading screw termination, it pass jack (4) by connector (7) with give stress reinforcing bar (9) and be connected, when cold drawn, spike (5) holds out against heavy frame (8), move behind the tension rod of jack (4), drive leading screw (2) cold drawn bar (9) by back-clamping spiral disk (3), jack (4) is when reaching range, before revolve back-clamping spiral disk (6) and be close to heavy frame baffle plate (10) and will give stress reinforcing bar (9) anchoring temporarily, jack (4) resets, before revolve back-clamping spiral disk (3) and be close to jack (4), then carry out next cold drawn stroke.When giving stress reinforcing bar (9) when meeting the requirements of cold stretch long value and cold-drawn control stress, make back-clamping spiral disk (6) leave the elastical retraction value of the distance of heavy frame baffle plate (10) greater than reinforcing bar.
Claims (4)
1, a construction site of being made up of heavy frame [8], YC-60 type jack [4] and supporting high-pressure oil pump thereof gives stress steel bar cold-drawn device, it is characterized in that in the center hole of YC-60 type jack [4], adding one with give the leading screw [2] that stress reinforcing bar [9] links to each other.
2,, it is characterized in that the length l 〉=steel bar cold-drawn stretch value+900mm of leading screw (2) by the described device of claim 1.
3,, it is characterized in that, YC-60 type jack (4) front and back last at leading screw (2) have back-clamping spiral disk (6) and back-clamping spiral disk (3) respectively by claim 1 or 2 described devices.
4,, it is characterized in that having one to be convenient to the square toes (1) that leading screw (2) rotates in the termination of leading screw (2) by claim 1,2 or 3 described devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103751 CN1047988A (en) | 1990-05-19 | 1990-05-19 | Portable cold drawing device for prestressed steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103751 CN1047988A (en) | 1990-05-19 | 1990-05-19 | Portable cold drawing device for prestressed steel bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1047988A true CN1047988A (en) | 1990-12-26 |
Family
ID=4878230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90103751 Pending CN1047988A (en) | 1990-05-19 | 1990-05-19 | Portable cold drawing device for prestressed steel bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047988A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295245A (en) * | 2011-08-26 | 2011-12-28 | 苏州市能工基础工程有限责任公司 | Jack for automatically drawing steel stranded wire |
| CN103741953A (en) * | 2013-12-20 | 2014-04-23 | 广西科技大学 | Automatic prestress tensioning control system |
| CN111515319A (en) * | 2020-04-19 | 2020-08-11 | 金成高 | A prestressing force steel stretching device for construction |
-
1990
- 1990-05-19 CN CN 90103751 patent/CN1047988A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295245A (en) * | 2011-08-26 | 2011-12-28 | 苏州市能工基础工程有限责任公司 | Jack for automatically drawing steel stranded wire |
| CN103741953A (en) * | 2013-12-20 | 2014-04-23 | 广西科技大学 | Automatic prestress tensioning control system |
| CN111515319A (en) * | 2020-04-19 | 2020-08-11 | 金成高 | A prestressing force steel stretching device for construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |