CN214082060U - Whole bundle of wearing of prestressing force is put - Google Patents
Whole bundle of wearing of prestressing force is put Download PDFInfo
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- CN214082060U CN214082060U CN202022701073.7U CN202022701073U CN214082060U CN 214082060 U CN214082060 U CN 214082060U CN 202022701073 U CN202022701073 U CN 202022701073U CN 214082060 U CN214082060 U CN 214082060U
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Abstract
The utility model discloses a whole bundle of wearing of prestressing force is put belongs to prestressing force construction technical field. The device comprises a vertical frame, a motor, an upper pressing wheel set and a lower pressing wheel set; the upper pressing wheel set and the lower pressing wheel set are kept parallel and are restrained by a plane connecting rod mechanism; each pressing wheel is connected with a coaxial synchronous transmission gear, a push rod for driving the upper pressing wheel group to move is arranged on the vertical frame, and the motor is used for driving the lower pressing wheel through a chain transmission mechanism; the pinch roller is a flat wheel, two ends of the pinch roller are respectively sleeved with a side wall, the side walls are restrained by check rings, and the side walls have complete rotational freedom degree relative to the pinch roller. The utility model discloses a flat wheel is as upper and lower pinch roller to set the lateral wall of upper and lower pinch roller to the active structure, can effectively guarantee to wear to restraint the speed unanimity of each steel strand wires of in-process, prevent the dislocation of steel strand wires end, greatly improved and worn to restraint the quality.
Description
Technical Field
The utility model relates to a whole bundle of wearing of prestressing force device belongs to prestressing force construction technical field.
Background
The bearing capacity of the concrete precast bridge is controlled by the steel strands which penetrate through the reserved holes and are subjected to the accurately controlled tensioning process, so that the number of the steel strands arranged on each precast beam is accurately calculated according to the total load borne. For the threading process of the steel strands, the beam-making field in China adopts a 'bundling threading process' in the early stage, and each steel strand is pre-sized, arranged in order and bundled into a bundle; and then the steel strand is pulled by a winch to penetrate into the reserved hole, and as disordered winding does not exist, stress of each steel strand is basically uniform during tensioning, and the optimal bearing capacity of the whole beam body can be achieved. However, the operations of "restraint making" and "restraint pulling" are all completed manually, which is a quite labor-consuming process.
Since the efficiency of the 'single reeving process' produced later is several times that of the 'bundling reeving process', and the single reeving machine has simple structure and low price, the single reeving process is rapidly popularized to all precast beam fields in the country under the drive of the economic benefit of the market. The serious hidden trouble of the process is as follows: because the superposition influence of the 'spiral line' on the outer surface of the steel strand and the 'hyperbolic' drooping radian of the reserved hole forces a single steel strand to generate unpredictable 'disordered winding' in the penetrating process, the steel strand is a steel cable stranded by seven steel wires together, the outer diameter of the steel strand is actually a spiral line with a longer pitch, the single rope penetrating process is in actual operation, when the steel strand penetrating the reserved hole is crowded gradually, the spiral lines are just like rifles in a gun bore, the steel strand penetrating after extrusion rotates and winds, the enveloping outer diameter of the whole steel strand is increased undoubtedly, but the reserved hole diameter of the beam body is fixed and unchanged, when S bending occurs in the reserved hole or various adverse factors are accidentally superposed, the conveying resistance of the steel strand is greatly increased, in order to forcibly penetrate the last steel strand, only the conveying force is increased, due to the strong conveying force and the rotation, the steel strands can obliquely drill through the cement layer of the beam body along the spiral line, and the steel strands are drilled outwards from the middle of the beam body or inwards from adjacent reserved holes.
When the situation occurs, when the last steel strand cannot be penetrated, an operator can select to retract the drilled part, then forcibly penetrates a steel strand at the other end, the last steel strand cannot be completely penetrated due to extrusion of the penetrated steel strand in the reserved hole, the operator often selects how deep the operator can penetrate, how deep the operator can penetrate is often caused, and then the operator cuts off the broken pieces, so that the fraud behavior which is difficult to find from the outside can bring potential hidden troubles to the whole route.
In addition, except the above-mentioned circumstances, the unordered winding of steel strand wires causes the steel strand wires that penetrate to differ in length, and according to the steel strand wires of 65Mn alloy steel material of manual, its elastic modulus E is up to more than 200, in the condition of fixing the both ends of the higher 65Mn steel strand wires of stranded elastic modulus together, exerts the critical pulling force of elastic deformation, the condition that the stress of the shorter steel strand wires is big, the stress of longer steel strand wires is little, even not atress at all appears.
In addition, the speed of a single rope penetrating process is very high, the length manually cut by a civil worker is difficult to control, in order to be stable, long and short, the steel stranded wires at two ends of the beam body are provided with the allowance of about 1 meter, the allowance is calculated according to the waste of 0.5 meter at each end of the steel stranded wires, each beam is provided with hundreds of steel stranded wires, the whole line is provided with thousands of steel stranded wires of bridges, and the waste is really a very striking number.
Chinese patent application No. CN201921355028.1 discloses a bridge prestress whole-bundle steel strand pressing and conveying device, which effectively realizes high-quality whole-bundle penetration. However, there is room for further improvement in its structural design.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a whole bundle of devices of wearing of prestressing force, it has improved the structure of upper and lower pinch roller, can make whole bundle of in-process of wearing, and the linear velocity of many steel strands keeps unanimous, wears to restraint back steel strand wires and keeps aliging.
In order to achieve the above object, the present invention provides the following technical solutions:
a prestressed whole-bundle penetrating device comprises a vertical frame, a motor, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set and the lower pressing wheel set are kept parallel and are restrained by a plane connecting rod mechanism; the upper pressing wheel group comprises upper pressing wheels distributed along the line feeding direction, the lower pressing wheel group comprises lower pressing wheels in one-to-one correspondence with the upper pressing wheels, each pressing wheel is connected with a coaxial synchronous transmission gear, and the synchronous transmission gears of the upper and lower pressing wheels which correspond to each other are meshed with each other; the vertical frame is provided with a push rod for driving the upper pinch roller set to move, and the motor is used for driving the lower pinch roller through a chain transmission mechanism; the pinch roller is a flat wheel, two ends of the pinch roller are respectively sleeved with a side wall, the side walls are restrained by check rings, and the side walls have complete rotational freedom degree relative to the pinch roller.
Furthermore, the device also comprises a guide pipe arranged on the wire inlet side, and a horizontal guide wheel is also arranged on the wire inlet side of the guide pipe.
Furthermore, the device also comprises two opposite vertical guide wheels arranged at the incoming line side of the horizontal guide wheel.
Furthermore, the device also comprises a combing and braiding device arranged between the horizontal guide wheel and the vertical guide wheel, and a plurality of hole sites for walking single steel strands are arranged on the combing and braiding device.
Further, the motor is arranged on the vertical frame, each lower pressing wheel is connected with a coaxial transmission chain wheel, the adjacent lower pressing wheels are driven by a chain, and the motor is driven by the lower pressing wheel with the head end through the chain.
Further, a tensioning wheel for tensioning the chain is arranged at each chain.
From the above description, the utility model discloses technical scheme's beneficial effect lies in:
1. the utility model provides an upper and lower pinch roller is the flat wheel, compares in the cambered surface wheel, and the wheel face each point linear velocity of flat wheel is unanimous, can make each steel strand wires that whole bundle was worn to restraint keep unanimous speed to go forward, avoids the dislocation of steel strand wires end.
2. The utility model discloses still set the lateral wall of upper and lower pinch roller to the active structure, can reduce the friction of lateral wall to marginal steel strand wires, further prevent the dislocation of steel strand wires end.
3. The utility model discloses further locate the motor on the perpendicular frame, the device bottom is smooth, is convenient for place on the transportation carrier.
4. The utility model can also be provided with a combing and knitting device, thereby playing the effect of combing and knitting while penetrating.
Drawings
In order to more clearly describe this patent, one or more of the following figures are provided.
Fig. 1 is a schematic structural view of a whole prestressed beam-penetrating device according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of the upper and lower pressing wheels shown in FIG. 1.
Fig. 3 is another schematic structural diagram of the whole prestressed beam-penetrating device according to the embodiment of the present invention.
Fig. 4 is a schematic structural view of the combing machine in fig. 3.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present patent by those skilled in the art, the technical solutions of the present patent are further described in the following specific cases.
As shown in fig. 1 and 2, a prestressed whole-bundle threading device comprises a vertical frame 3, a motor 4, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set forms an integral unit capable of moving in a translation manner through an upper wheel frame 2, the lower pressing wheel set is arranged on a lower wheel frame 1, and the lower wheel frame 1 and the upper wheel frame 2 are parallel to each other; the upper wheel frame 2 and the lower wheel frame 1 are connected through a connecting frame rod to form a plane connecting rod movement mechanism; the upper pressing wheel group comprises upper pressing wheels 7, the lower pressing wheel group comprises lower pressing wheels 6 which are in one-to-one correspondence with the upper pressing wheels 7, each pressing wheel is connected with a coaxial synchronous transmission gear 8, and the synchronous transmission gears 8 of the upper and lower pressing wheels which are in mutual correspondence are meshed with each other; the vertical frame 3 is provided with a push rod 5 for driving the upper wheel frame 2 to move, and the motor 4 is used for driving the lower pressing wheel 6 through a chain transmission mechanism; the pinch roller is the flat wheel, including wheel body 61, left and right lateral wall 62 to and left and right retaining ring 63, the retaining ring inlays in wheel body both sides to restrain the lateral wall, the lateral wall has complete rotational degree of freedom for the wheel body.
In addition, wear-resistant rubber is further arranged on the wheel body, so that friction force can be increased, and the steel strand is protected from being scratched. The wheel body is connected with the wheel shaft in a key connection mode.
As shown in fig. 3, the device further comprises a guide tube 12 arranged on the incoming line side, a horizontal guide wheel 13, a combing device 14, and two opposite vertical guide wheels 15. The guide pipe 12, the horizontal guide wheel 13 and the vertical guide wheel 15 all play a role in guiding, and the whole bundle of steel strands can be well restrained so as to be conveyed smoothly. The combing device 14 is shown in fig. 4, and is provided with a plurality of holes for running single steel strands.
For the combed whole bundle of steel strands, the comber 14 is not required. If a plurality of steel strands are not combed into a bundle in advance, each steel strand can be respectively penetrated in one hole position of the combing device, and the ends are bundled. Therefore, when the steel strands are threaded, the steel strands can be combed and braided simultaneously, and the working efficiency is greatly improved.
Further, still see fig. 1, the motor 4 is arranged on the vertical frame 3, each lower pressing wheel 6 is connected with a coaxial transmission chain wheel 9, the adjacent lower pressing wheels are driven by a chain 10, and the motor 4 is driven by the lower pressing wheel with the chain as the head end.
In addition, in order to ensure the transmission efficiency, a tension wheel 11 for tensioning the chain is also arranged at each chain. In use, the chain is passed around the tensioner, i.e. the tensioner is located outside the endless area of the chain.
In a word, the utility model discloses a flat wheel is as upper and lower pinch roller to set the lateral wall of upper and lower pinch roller to the active structure, can effectively guarantee to wear to restraint the speed unanimity of each steel strand wires of in-process, prevent the dislocation of steel strand wires end, greatly improved and worn to restraint the quality.
It should be noted that the above embodiments are only specific examples of the implementation schemes of this patent, and do not cover all the implementation schemes of this patent, and therefore, the scope of protection of this patent cannot be considered as limited; all the implementations which belong to the same concept as the above cases or the combination of the above schemes are within the protection scope of the patent.
Claims (6)
1. A prestressed whole-bundle penetrating device comprises a vertical frame, a motor, an upper pressing wheel set and a lower pressing wheel set, wherein the upper pressing wheel set and the lower pressing wheel set are kept parallel and are restrained by a plane connecting rod mechanism; the upper pressing wheel group comprises upper pressing wheels distributed along the line feeding direction, the lower pressing wheel group comprises lower pressing wheels in one-to-one correspondence with the upper pressing wheels, each pressing wheel is connected with a coaxial synchronous transmission gear, and the synchronous transmission gears of the upper and lower pressing wheels which correspond to each other are meshed with each other; the vertical frame is provided with a push rod for driving the upper pinch roller set to move, and the motor is used for driving the lower pinch roller through a chain transmission mechanism; the method is characterized in that: the pinch roller is a flat wheel, two ends of the pinch roller are respectively sleeved with a side wall, the side walls are restrained by check rings, and the side walls have complete rotational freedom degree relative to the pinch roller.
2. The prestressed whole-bundle pulling device according to claim 1, wherein: the device also comprises a guide pipe arranged on the wire inlet side, and a horizontal guide wheel is also arranged on the wire inlet side of the guide pipe.
3. The prestressed whole-bundle pulling device according to claim 2, wherein: the device also comprises two opposite vertical guide wheels arranged at the incoming line side of the horizontal guide wheel.
4. The pre-stressed whole bundle pulling device according to claim 3, wherein: the steel wire drawing device is characterized by further comprising a combing and braiding device arranged between the horizontal guide wheel and the vertical guide wheel, wherein a plurality of hole sites for walking single steel strands are formed in the combing and braiding device.
5. The prestressed whole-bundle pulling device according to claim 1, wherein: the motor is arranged on the vertical frame, each lower pressing wheel is connected with a coaxial transmission chain wheel, the adjacent lower pressing wheels are driven by a chain, and the motor is driven by the lower pressing wheel with the head end as the chain.
6. The pre-stressed whole bundle pulling device according to claim 5, wherein: and a tensioning wheel for tensioning the chains is also arranged at each chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022701073.7U CN214082060U (en) | 2020-11-20 | 2020-11-20 | Whole bundle of wearing of prestressing force is put |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022701073.7U CN214082060U (en) | 2020-11-20 | 2020-11-20 | Whole bundle of wearing of prestressing force is put |
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| Publication Number | Publication Date |
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| CN214082060U true CN214082060U (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022701073.7U Active CN214082060U (en) | 2020-11-20 | 2020-11-20 | Whole bundle of wearing of prestressing force is put |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961272A (en) * | 2022-05-10 | 2022-08-30 | 柳州欧维姆工程有限公司 | Vertical prestress intelligent penetrating core equipment and construction method thereof |
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2020
- 2020-11-20 CN CN202022701073.7U patent/CN214082060U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961272A (en) * | 2022-05-10 | 2022-08-30 | 柳州欧维姆工程有限公司 | Vertical prestress intelligent penetrating core equipment and construction method thereof |
| CN114961272B (en) * | 2022-05-10 | 2024-06-11 | 柳州欧维姆工程有限公司 | Vertical prestress intelligent beam penetrating core equipment and construction method thereof |
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