CN213979589U - Precast beam reinforcing bar and stretch-draw jack anticollision device - Google Patents
Precast beam reinforcing bar and stretch-draw jack anticollision device Download PDFInfo
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- CN213979589U CN213979589U CN202022064921.8U CN202022064921U CN213979589U CN 213979589 U CN213979589 U CN 213979589U CN 202022064921 U CN202022064921 U CN 202022064921U CN 213979589 U CN213979589 U CN 213979589U
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- jackscrew
- precast beam
- locking groove
- cylinder
- beam reinforcing
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Abstract
The utility model belongs to the technical field of the technique of bridge tunnel construction device and specifically relates to a precast beam reinforcing bar and stretch-draw jack anticollision device is related to, including the cylinder, state the cylinder and run through along the axial and be equipped with the mounting hole, cylinder upper segment lateral wall is provided with the spacing ring, and the spacing ring upper end is higher than the cylinder upper end. This application has between increase jack-to-jack and the ground tackle distance, and a plurality of cylinder concatenations can adapt to more construction environment, have avoided the influence of reinforcing bar to jack-to-jack on the precast beam to a certain extent, low cost, and simple reliable installs swift effect.
Description
Technical Field
The application relates to the technical field of bridge tunnel construction devices, in particular to an anti-collision device for precast beam steel bars and a tensioning jack.
Background
In the field of construction, the prestressed tendons have the functions of enabling a member to generate a pre-compressive stress before being stressed, reducing or offsetting a concrete tensile stress caused by a load, controlling the tensile stress level of the member, even enabling the member to be in a compressed state, avoiding the early occurrence of cracks of the reinforced concrete member and improving the performance and durability of the reinforced concrete member.
The tensioning jack is a special jack for tensioning prestressed bars such as steel strand wires and the like. The jack is divided into a front clamping type jack and a through type jack according to different structures, and is widely applied to prestress construction projects such as highway bridges, railway bridges, hydroelectric dam bodies, high-rise buildings and the like.
During steel strand tensioning operation, firstly, an anchorage device is arranged on a steel strand in a penetrating mode and tightly abuts against a precast beam, the anchorage device is generally cylindrical, a mounting hole penetrating through the anchorage device is formed in the circular surface of the anchorage device, the steel strand penetrates through the mounting hole during mounting, and one end of the anchorage device tightly abuts against the precast beam; and then, the tensioning jack is penetrated in the steel strand and tightly abuts against the limiting plate, and the steel strand is tensioned by operating the tensioning jack so that the steel strand has proper prestress.
In the construction, in order to interconnect between the precast beams, the reinforcing steel bar frames in the precast beams need to be exposed, the reinforcing steel bar frames are complex in structure, the end parts of partial reinforcing steel bars are often close to steel strand wires, so that the tensioning jack is difficult to install on the steel strand wires.
In view of the above-mentioned related art, the inventors have considered that there is a drawback in that the precast beam reinforcing steel collides with the tension jack.
SUMMERY OF THE UTILITY MODEL
For the problem of improving precast beam reinforcing bar and stretch-draw jack conflict, this application provides a precast beam reinforcing bar and stretch-draw jack anticollision device.
The application provides a pair of precast beam reinforcing bar and stretch-draw jack anticollision device adopts following technical scheme:
the utility model provides a precast beam reinforcing bar and stretch-draw jack anticollision device, includes the cylinder, the cylinder has run through along the axial and has seted up the mounting hole, cylinder upper segment lateral wall is provided with the spacing ring, the spacing ring upper end is higher than the cylinder upper end.
By adopting the technical scheme, during steel strand tensioning, the steel strands penetrate through the mounting holes, the upper end of the column body abuts against the anchorage device, the lower end of the column body is mounted on the tensioning jack, the distance between the tensioning jack and the anchorage device is increased, the limiting ring is in contact with the side wall of the anchorage device, the supporting effect on the column body is achieved, the influence of steel bars on the precast beam on the tensioning jack is avoided to a certain extent, the cost is low, the installation is simple and reliable, and the installation is rapid.
Preferably, the outer side of the lower section of the column body is provided with a first thread, and the inner side of the limiting ring close to one side of the column body is provided with a second thread.
Through adopting above-mentioned technical scheme, during the concatenation between a plurality of cylinders, threaded connection conveniently dismantles.
Preferably, the upper end of the limit ring is vertically provided with a support groove, the limit ring is provided with a support plate, the support plate is arranged in the support groove, and the support plate is arranged along the side wall of the support groove in a sliding manner.
Through adopting above-mentioned technical scheme, the backup pad can be followed and supported the groove and slided from top to bottom, has prolonged the height of spacing ring, and when installing on the ground tackle, the backup pad can improve the support nature to the device for the device is difficult for dropping from the ground tackle.
Preferably, a locking groove is formed in the outer wall of the limiting ring, the locking groove is communicated with the supporting groove, a first jackscrew is arranged on the supporting plate, one end of the first jackscrew penetrates out of the locking groove, the first jackscrew is connected with the locking groove in a sliding mode, and the other end of the first jackscrew penetrates through the supporting plate and abuts against the limiting ring tightly.
Through adopting above-mentioned technical scheme, first jackscrew in the locking groove slides with the backup pad together, and first jackscrew prevents to a certain extent that the backup pad from unexpected sliding with backup pad and locating part fixed connection for the device is difficult for dropping from the ground tackle, has further improved the support nature to the device.
Preferably, the upper end of the locking groove is opened, a second jackscrew is arranged on the supporting plate, and the second jackscrew is positioned right above the first jackscrew.
Through adopting above-mentioned technical scheme, the second jackscrew in the locking groove slides with the backup pad together, and the second jackscrew passes the backup pad and supports tight ground tackle, and the second jackscrew cooperatees with first jackscrew, has further increased the stability between device and the ground tackle.
Preferably, the lateral wall of the upper locking groove section is provided with a limiting section, the opening width of the limiting section is smaller than the opening width of the locking groove below the limiting section, the diameter of the first jackscrew is larger than the opening width of the limiting section and smaller than the opening width of the locking groove below the limiting section, and the diameter of the second jackscrew is smaller than the opening width of the limiting section.
Through adopting above-mentioned technical scheme, spacing section plays the limiting displacement to first jackscrew, prevents to a certain extent that backup pad and spacing ring break away from.
Preferably, the handles are arranged at the ends, departing from the supporting plate, of the second jackscrew and the first jackscrew.
Through adopting above-mentioned technical scheme, conveniently rotate second jackscrew and first jackscrew.
Preferably, the lower end of the supporting plate is provided with a spring, one end of the spring is connected with the supporting plate, and the other end of the spring is connected with the bottom wall of the supporting groove.
Through adopting above-mentioned technical scheme, loosen second jackscrew and first jackscrew, the spring can be fast with the backup pad pull back support groove in, dismantle the convenience, can improve work efficiency.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the upper end of the column body abuts against the anchorage device, the lower end of the column body is installed on the tensioning jack, the distance between the tensioning jack and the anchorage device is increased, the influence of steel bars on the precast beam on the tensioning jack is avoided to a certain extent, the support performance of the device can be improved by the limiting ring and the supporting plate, the device is not easy to fall off from the anchorage device, the cost is low, the installation is simple and reliable, and the installation is rapid;
2. the first jackscrew is matched with the second jackscrew, so that the stability between the device and the anchorage device is further improved, and the limiting section on the side wall of the locking groove prevents the support plate from being separated from the limiting ring to a certain extent;
3. the spring can be fast with the backup pad pull back support groove in, it is convenient to dismantle, can improve work efficiency.
Drawings
Fig. 1 is an overall schematic view of precast beam reinforcing bar and stretch-draw jack anti-collision device of this application embodiment.
Fig. 2 is a schematic structural diagram of precast beam reinforcing bar and stretch-draw jack anti-collision device of this application embodiment.
Description of reference numerals: 1. a cylinder; 11. a first thread; 12. a second thread; 2. mounting holes; 3. a limiting ring; 31. a support groove; 32. a locking groove; 321. a limiting section; 4. a support plate; 51. a first jackscrew; 511. a handle; 52. a second jackscrew; 6. a spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses precast beam reinforcing bar and stretch-draw jack anticollision device refers to 1, including cylinder 1, has seted up mounting hole 2 along axial run-through on the cylinder 1 for pass the steel strand wires.
Referring to fig. 1, a limiting ring 3 is integrally arranged on the side wall of the upper section of a cylinder 1, the upper end face of the limiting ring 3 is higher than the upper end face of the cylinder 1, first threads 11 are arranged on the outer side of the lower section of the cylinder 1, and second threads 12 are arranged on the inner side of the limiting ring 3, so that a plurality of devices can be conveniently spliced. In actual operation, when meeting the distance between reinforcing bar and the jack-draw great, can splice a plurality of devices, increased the adaptability of device.
Referring to fig. 2, the upper end face of the limit ring 3 is vertically provided with a support groove 31 along the circle of the limit ring 3, the limit ring 3 is provided with a support plate 4, the support plate 4 is annular and is arranged in the support groove 31, the support plate 4 is slidably connected with the side wall of the support groove 31, the lower end of the support plate 4 is provided with a spring 6, one end of the spring 6 is welded with the support plate 4, the other end of the spring is welded with the bottom wall of the support groove 31, and the support plate 4 is stretched by the upward sliding spring 6.
Referring to fig. 2, a locking groove 32 is formed in a side wall of the limiting ring 3, which is away from the column 1, the upper end of the locking groove 32 is open, the locking groove 32 is communicated with the supporting groove 31, a limiting section 321 is arranged on the side wall of the upper end of the locking groove 32, and the opening width of the limiting section 321 is smaller than the opening width of the locking groove 32 below the limiting section 321; the supporting plate 31 is provided with a first jackscrew 51, the diameter of the first jackscrew 51 is larger than the opening width of the limiting section 321 and smaller than the opening width of the locking groove 32 below the limiting section 321, the first jackscrew 51 is limited by the limiting section 321 and cannot slide out of the locking groove 32 to a certain extent, the supporting plate 4 is prevented from being completely drawn out of the supporting groove 31, the first jackscrew 51 is arranged in the locking groove 32, the first jackscrew 51 is in sliding connection with the locking groove 32, the first jackscrew 51 horizontally penetrates through the supporting plate 4 and tightly abuts against the limiting ring 3, and the first jackscrew 51 is in threaded connection with the supporting plate 4; a second jackscrew 52 is arranged on the support plate 31, the diameter of the second jackscrew 52 is smaller than the opening width of the limiting section 321, the second jackscrew 52 can slide out of the locking groove 32, the second jackscrew 52 is positioned right above the first jackscrew 51, the second jackscrew 52 is arranged in the locking groove 32, the second jackscrew 52 is in sliding connection with the locking groove 32, the second jackscrew 52 horizontally penetrates through the support plate 4 and abuts against the anchorage device, and the second jackscrew 52 is in threaded connection with the support plate 4; the first and second screws 51 and 52 are provided with handles 511 at ends thereof facing away from the supporting plate 4.
The implementation principle of precast beam reinforcing bar and stretch-draw jack anticollision device of this application embodiment does: in carrying out precast beam steel strand wires stretch-draw operation, near meetting precast beam steel strand wires have the reinforcing bar to block the installation of stretch-draw jack, then install between ground tackle and stretch-draw jack the utility model discloses a precast beam reinforcing bar and stretch-draw jack anticollision device, the installation step is as follows: firstly, a steel strand penetrates through a mounting hole 2, the upper end of a column body 1 is mounted on an anchorage device, and the lower end of the column body 1 is mounted in a tensioning jack; secondly, sliding the support plate 4 towards the direction of the anchorage device, rotating the second jackscrew 52 to abut against the support plate 4, and rotating the first jackscrew 51 to abut against the side wall of the support groove 31; and starting the tensioning jack to perform tensioning operation.
When the precast beam steel strand is tensioned, the second top thread 52 and the first top thread 51 are rotated, and the spring 6 contracts to pull the support plate 4 back to the support groove 31.
For the condition that the steel bars near the beam-making steel strand are long, a plurality of devices can be spliced, the lower end of the column body 1 of one device is over against the upper end of the column body 1 of the other device, and the two devices are connected through threads.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides a precast beam reinforcing bar and stretch-draw jack anticollision device which characterized in that: the device comprises a cylinder (1), wherein a mounting hole (2) is formed in the cylinder (1) in an axial penetrating manner, a limiting ring (3) is arranged on the side wall of the upper section of the cylinder (1), and the upper end of the limiting ring (3) is higher than the upper end of the cylinder (1); the outer side of the lower section of the column body (1) is provided with a first thread (11), and the inner side of the limiting ring (3) is provided with a second thread (12).
2. The precast beam reinforcing steel bar and tensioning jack anti-collision device according to claim 1, characterized in that: support groove (31) have vertically been seted up to spacing ring (3) upper end, be equipped with backup pad (4) on spacing ring (3), backup pad (4) are arranged in support groove (31) and backup pad (4) along supporting groove (31) lateral wall and slide the setting.
3. An anti-collision device for precast beam reinforcing steel bars and a tensioning jack according to claim 2, wherein: the locking device is characterized in that a locking groove (32) is formed in the outer wall of the limiting ring (3), the locking groove (32) is communicated with the supporting groove (31), a first jackscrew (51) is arranged on the supporting plate (4), one end of the first jackscrew (51) penetrates out of the locking groove (32), the first jackscrew (51) is connected with the locking groove (32) in a sliding mode, and the other end of the first jackscrew (51) penetrates through the supporting plate (4) and abuts against the limiting ring (3).
4. An anti-collision device for precast beam reinforcing steel bars and a tensioning jack according to claim 3, wherein: the upper end of the locking groove (32) is opened, a second jackscrew (52) is arranged on the supporting plate (4), and the second jackscrew (52) is located right above the first jackscrew (51).
5. An anti-collision device for precast beam reinforcing steel bars and a tensioning jack according to claim 4, wherein: be provided with spacing section (321) on the lateral wall of locking groove (32) upper segment, the opening width of spacing section (321) is less than spacing section (321) below locking groove (32) opening width, first jackscrew (51) diameter is greater than the opening width of spacing section (321) and is less than below locking groove (32) opening width of spacing section (321), second jackscrew (52) diameter is less than the opening width of spacing section (321).
6. An anti-collision device for precast beam reinforcing steel bars and a tensioning jack according to claim 4, wherein: and handles (511) are arranged at the ends, departing from the support plate (4), of the second jackscrew (52) and the first jackscrew (51).
7. An anti-collision device for precast beam reinforcing steel bars and a tensioning jack according to claim 2, wherein: the lower end of the supporting plate (4) is provided with a spring (6), one end of the spring (6) is connected with the supporting plate (4), and the other end of the spring is connected with the bottom wall of the supporting groove (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022064921.8U CN213979589U (en) | 2020-09-19 | 2020-09-19 | Precast beam reinforcing bar and stretch-draw jack anticollision device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022064921.8U CN213979589U (en) | 2020-09-19 | 2020-09-19 | Precast beam reinforcing bar and stretch-draw jack anticollision device |
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| Publication Number | Publication Date |
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| CN213979589U true CN213979589U (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022064921.8U Active CN213979589U (en) | 2020-09-19 | 2020-09-19 | Precast beam reinforcing bar and stretch-draw jack anticollision device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182597A (en) * | 2022-08-24 | 2022-10-14 | 中建八局第一建设有限公司 | Butt joint construction method for man-shaped double-inclined-span steel column |
-
2020
- 2020-09-19 CN CN202022064921.8U patent/CN213979589U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182597A (en) * | 2022-08-24 | 2022-10-14 | 中建八局第一建设有限公司 | Butt joint construction method for man-shaped double-inclined-span steel column |
| CN115182597B (en) * | 2022-08-24 | 2023-07-11 | 中建八局第一建设有限公司 | Human-shaped double-inclined-span steel column butt joint construction method |
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