CN209975380U - Tensioning fastening wrench for secondary tensioning low-retraction anchorage - Google Patents
Tensioning fastening wrench for secondary tensioning low-retraction anchorage Download PDFInfo
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- CN209975380U CN209975380U CN201920730060.7U CN201920730060U CN209975380U CN 209975380 U CN209975380 U CN 209975380U CN 201920730060 U CN201920730060 U CN 201920730060U CN 209975380 U CN209975380 U CN 209975380U
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- transmission sleeve
- sleeve
- wrench
- tensioning
- support nut
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- 230000005540 biological transmission Effects 0.000 claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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Abstract
The utility model provides a stretch-draw fastening spanner that is used for secondary stretch-draw low back and contracts ground tackle. The tensioning fastening wrench comprises a transmission sleeve and a wrench which is sleeved with the transmission sleeve; the transmission sleeve is of a tubular structure, a plurality of bulges are arranged on the inner wall of the lower end of the transmission sleeve, a plurality of notches which are uniformly distributed on the circumference are arranged on the upper end of the transmission sleeve, and the transmission sleeve can be sleeved outside the support nut; the spanner includes that an internal diameter slightly is greater than the tubulose body of cup jointing of transmission sleeve external diameter and two symmetries set up the handle at the external wall of tubulose body of cup jointing, the internal a plurality of archs that are provided with of tubulose cup jointing, tubulose cup jointing can cup joint outside transmission sleeve, the internal arch of tubulose cup jointing can inlay and put and block in transmission sleeve's breach. The tensioning fastening wrench adopts the transmission sleeve and the wrench structure which can be mutually sleeved, so that the sleeve connection is convenient when the repeated rotation operation is carried out, and simultaneously, the tensioning fastening is convenient, the work efficiency is high, and the safety is good because the symmetrical structure is adopted.
Description
Technical Field
The utility model relates to an anchor technical field, in particular to a stretch-draw fastening spanner that is used for secondary stretch-draw low back ground tackle that contracts that adopts transmission sleeve and the spanner structure that can cup joint each other, processing is simple, the fastening is convenient.
Background
The prestressed steel beam is a key stressed member in a prestressed bridge structure, and the use safety of the bridge is seriously influenced by the loss of prestress, so that the maintenance of the prestress of the steel beam is very important, and in order to ensure the prestress of the steel beam, a low-retraction anchorage device is mainly adopted to perform secondary tensioning and fastening on the prestressed steel beam in the prior art; the low-retraction anchor is mainly composed of a support nut and an anchor cup, the anchor cup is used for fixing the steel strands, the support nut is used for fastening the anchor cup, when the low-retraction anchor is used for secondary tensioning and fastening, a traction mechanism is required to apply axial traction force to the anchor cup, and then the support nut is rotated by a wrench to move towards the direction of a support surface, so that the secondary tensioning and fastening of the steel strands are realized.
Because the low anchor system that contracts belongs to novel prestressed anchorage system, ground tackle manufacture factory has not all formed a complete set research and development production standardized stretch-draw, fastening tool for the spanner that is used for rotatory support nut at present has certain not enough:
1. most temporary wrench structures are adopted, and because the installation position space of the low-retraction anchor is relatively narrow, the operation of directly tensioning and fastening the support nut by using a wrench is inconvenient, the efficiency is low, and the fastening effect cannot be ensured;
2. the part adopts a sleeve structure to sleeve and connect a supporting nut, the operation space of the wrench is extended to a larger space through the sleeve structure, and then the sleeve structure is inserted and connected at the upper end of the sleeve through a handle, the structure is not enough that the handle needs to be repeatedly taken down and inserted and connected when being rotated for multiple times, the insertion and the fixation of the handle are inconvenient, the work efficiency is low, the handle is easy to fall off when not being inserted and connected, the potential safety hazard exists, meanwhile, a balance structure is not adopted, the force is inconvenient to use, and the handle is easy to loosen when being used for;
3. the operation of the low-retraction anchor is inconvenient because no standardized tool is adopted, the operation safety is not ensured, and meanwhile, the secondary tensioning in site construction cannot achieve the expected effect and design requirement.
Disclosure of Invention
The utility model aims at solving the technical problem, a stretch-draw fastening spanner for secondary stretch-draw low back ground tackle that contracts is provided, this stretch-draw fastening spanner adopts transmission sleeve and the spanner structure that can cup joint each other, cup joints the convenience when carrying out the operation of many times rotation, adopts symmetrical structure simultaneously, and stretch-draw fastening is convenient, and the work efficiency is high, the security is good.
In order to solve the above-mentioned prior art problem, the technical scheme of the utility model is that:
a tensioning fastening wrench for a secondary tensioning low-retraction anchor comprises an anchor cup and a support nut, wherein the anchor cup is provided with an external thread, the support nut is provided with an internal thread matched with the external thread of the anchor cup, the anchor cup and the support nut are connected through a thread, and the tensioning fastening wrench comprises a transmission sleeve and a wrench sleeved with the transmission sleeve;
the transmission sleeve is of a tubular structure, a plurality of bulges are arranged on the inner wall of the lower end of the transmission sleeve, a plurality of notches with uniformly distributed circumferences are arranged at the upper end of the transmission sleeve, a plurality of grooves with uniformly distributed circumferences are arranged at the upper end of the support nut, the number and the shape of the bulges of the transmission sleeve are matched with those of the grooves of the support nut, the transmission sleeve can be sleeved outside the support nut, and the bulges of the transmission sleeve are clamped in the grooves of the support nut;
the wrench comprises a tubular sleeve joint body with the inner diameter slightly larger than the outer diameter of the transmission sleeve and two handles symmetrically arranged on the outer wall of the tubular sleeve joint body, wherein a plurality of bulges are arranged in the tubular sleeve joint body, the bulges are matched with the shape of the notches of the transmission sleeve, the tubular sleeve joint body can be sleeved outside the transmission sleeve, the bulges in the tubular sleeve joint body can be embedded and clamped in the notches of the transmission sleeve, and the distance between the bulges of the wrench is equal to one time or two times or more of the distance between the notches of the transmission sleeve;
the protrusions of the transmission sleeve and the tubular sleeve joint body are preferably wedge-shaped blocks.
The utility model relates to a stretch-draw fastening spanner that is used for secondary stretch-draw low back ground tackle that contracts, its beneficial effect has:
1. the transmission sleeve is adopted, so that the operation space of the wrench is not limited by the installation position of the low-retraction anchor, and the tensioning and fastening operation can be conveniently carried out;
2. the transmission sleeve and the wrench structure which can be sleeved with each other are adopted, so that the sleeve joint is convenient and not easy to loosen when the multi-time rotating operation is carried out, and meanwhile, the symmetrical structure is adopted, so that the tensioning and fastening are convenient, the working efficiency is high, and the safety is good;
3. the wrench has the advantages of simple structure, convenient processing and low cost, and is suitable for general popularization.
4. The spanner adopts standardized structure, can guarantee the tensioning fastening effect to ensure the anticipated effect and the requirement that the secondary tensioning of low back-out ground tackle reaches.
Drawings
Fig. 1 is a perspective view of a driving sleeve of a tensioning fastening wrench for a secondary tensioning low-retraction anchor according to the present invention;
fig. 2 is a perspective view of a wrench of a tensioning fastening wrench for a secondary tensioning low-retraction anchor according to the present invention;
FIG. 3 is a perspective view of a low retraction anchor in an embodiment of the present invention;
FIG. 4 is a schematic view of a low retraction anchor of an embodiment of the present invention installed on a support surface.
Detailed Description
The invention will be further described with reference to the following examples:
example 1:
a tensioning fastening wrench for a secondary tensioning low-retraction anchor is disclosed, as shown in fig. 3 and 4, the low-retraction anchor comprises an anchor cup 3 and a support nut 4, the anchor cup is provided with an external thread, the support nut is provided with an internal thread matched with the external thread of the anchor cup, the anchor cup and the support nut are connected through a thread, a steel strand 5 is fixed on the anchor cup 3, the support nut 4 is close to a support surface 6, and the upper end of the support nut is provided with six grooves 41 which are uniformly distributed on the circumference;
as shown in fig. 1 and 2, the tensioning fastening wrench comprises a transmission sleeve 1 and a wrench 2 sleeved with the transmission sleeve;
the transmission sleeve 1 is of a tubular structure, six protrusions 11 are arranged on the inner wall of the lower end of the transmission sleeve, eight notches 12 which are uniformly distributed on the circumference are arranged at the upper end of the transmission sleeve, the transmission sleeve can be sleeved outside the support nut, and the protrusions of the transmission sleeve are clamped in the grooves of the support nut;
the wrench 2 comprises a tubular sleeve joint body 21 with the inner diameter slightly larger than the outer diameter of the transmission sleeve and two handles 22 symmetrically arranged on the outer wall of the tubular sleeve joint body, four bulges 211 are arranged in the tubular sleeve joint body, the bulges are matched with the shape of the notches of the transmission sleeve, the tubular sleeve joint body can be sleeved outside the transmission sleeve, the bulges in the tubular sleeve joint body can be embedded and clamped in the notches of the transmission sleeve, and the distance between the bulges of the wrench is equal to twice of the distance between the notches of the transmission sleeve;
the transmission sleeve and the tubular sleeve joint body are provided with wedge-shaped blocks.
The operation process comprises the following steps:
sleeving a transmission sleeve 1 on a support nut, sleeving a wrench 2 outside the transmission sleeve, wherein a bulge on the transmission sleeve is just clamped into a groove of the support nut, a bulge on a tubular sleeve body of the wrench is clamped into a notch on the transmission sleeve, and then installing a traction mechanism for applying axial traction force to an anchor cup, wherein the traction mechanism comprises a connecting piece, a hollow jack and a support, the connecting piece can penetrate through the transmission sleeve, the lower end of the connecting piece can be connected with the anchor cup, the hollow jack is used for fixing the upper end of the connecting piece and can axially pull the connecting piece, and the support is used for supporting the hollow jack; during tensioning, the connecting piece, the anchor cup and the support nut are sequentially driven by the hollow jack to integrally pull up the anchor cup and the support nut, and the support nut is driven by the fastening wrench through the transmission sleeve to rotate so as to displace the support nut towards the direction of the supporting surface, thereby realizing secondary tensioning and fastening of the steel strand; when the wrench is rotated for a certain angle and is inconvenient to exert force, the wrench can be lifted upwards, then the wrench is reversely rotated for a certain angle and then sleeved in the transmission sleeve again, so that the repeated rotating operation is convenient, and a small hammer can be used for tapping the wrench handle during the rotating operation until the wrench is not rotated any more.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (4)
1. The utility model provides a stretch-draw fastening spanner for low back ground tackle that contracts of secondary stretch-draw, low back ground tackle that contracts includes anchor cup, support nut, the anchor cup has the external screw thread, support nut have with anchor cup external screw thread assorted internal thread, anchor cup and support nut are connected its characterized in that through the screw thread: the tensioning fastening wrench comprises a transmission sleeve and a wrench which is sleeved with the transmission sleeve.
2. A tensioning fastening wrench for a secondary tensioning low-retraction anchor according to claim 1, wherein the transmission sleeve is of a tubular structure, the inner wall of the lower end of the transmission sleeve is provided with a plurality of protrusions, the upper end of the transmission sleeve is provided with a plurality of notches with uniformly distributed circumferences, the upper end of the support nut is provided with a plurality of grooves with uniformly distributed circumferences, the number and the shape of the protrusions of the transmission sleeve are matched with those of the grooves of the support nut, the transmission sleeve can be sleeved outside the support nut, and the protrusions of the transmission sleeve are clamped in the grooves of the support nut.
3. A tensioning fastening wrench for a secondary tensioning low-retraction anchor according to claim 1, wherein the wrench comprises a tubular sleeve with an inner diameter slightly larger than the outer diameter of the transmission sleeve and two handles symmetrically arranged on the outer wall of the tubular sleeve, a plurality of protrusions are arranged in the tubular sleeve, the protrusions match with the notches of the transmission sleeve in shape, the tubular sleeve can be sleeved outside the transmission sleeve, the protrusions in the tubular sleeve can be embedded and clamped in the notches of the transmission sleeve, and the distance between the protrusions of the wrench is equal to one or two or more times the distance between the notches of the transmission sleeve.
4. A tensioning fastening wrench for a secondary tensioning low retraction anchor according to claim 3 characterised in that the protrusions of the drive sleeve and tubular socket are preferably wedge shaped blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920730060.7U CN209975380U (en) | 2019-05-21 | 2019-05-21 | Tensioning fastening wrench for secondary tensioning low-retraction anchorage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920730060.7U CN209975380U (en) | 2019-05-21 | 2019-05-21 | Tensioning fastening wrench for secondary tensioning low-retraction anchorage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209975380U true CN209975380U (en) | 2020-01-21 |
Family
ID=69263272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920730060.7U Expired - Fee Related CN209975380U (en) | 2019-05-21 | 2019-05-21 | Tensioning fastening wrench for secondary tensioning low-retraction anchorage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209975380U (en) |
-
2019
- 2019-05-21 CN CN201920730060.7U patent/CN209975380U/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: 20200121 |