CN111910930B - Cast-in-place box girder post-tensioning method prestressed reinforcement penetrating device - Google Patents

Abstract

The invention discloses a post-tensioning prestressed reinforcement penetrating device for a cast-in-place box girder, which comprises a penetrating mechanism, wherein the penetrating mechanism comprises a penetrating motor and a penetrating pressing wheel set, the penetrating motor drives the penetrating pressing wheel set to rotate, the penetrating pressing wheel set comprises pressing wheels, a guide mechanism is arranged on the penetrating mechanism, the guide mechanism comprises a guide head and a guide block, the rear end of the guide head is provided with a fixing hole, the front end of a prestressed reinforcement is inserted into the fixing hole to be fixed, and at least three first guide wheels are uniformly arranged on the periphery of the guide head; the guide block is provided with a plurality of, the guide block evenly overlap establish to on the prestressing steel and with prestressing steel sliding connection, evenly be provided with at least three second leading wheel around the guide block, between the guide block and the guide block with all be connected through connecting the rope between the direction head. The device can improve the reliability and stability of the prestressed reinforcement penetration.

Description

Cast-in-place box girder post-tensioning method prestressed reinforcement penetrating device

Technical Field

The invention relates to the field of building construction, in particular to a cast-in-place box girder post-tensioning prestressed reinforcement beam penetrating device.

Background

Prestressed reinforcement is a compressive stress that is applied to the concrete of a structural member in advance by a pre-tensioning method or a post-tensioning method before the structural member is used. In post-tensioning construction, a prestressed pipeline needs to be buried in the pouring process, and after the construction reaches a certain strength, the prestressed reinforcement penetrates through the prestressed pipeline to be tensioned.

In the existing prestressed reinforcement penetrating mode, besides the traditional manual penetrating mode, a reinforcement penetrating device is also provided, namely, a motor is used for driving an extrusion wheel to drive prestressed reinforcements to convey the prestressed reinforcements until the prestressed reinforcements penetrate through a prestressed pipeline. However, in the post-tensioning construction process of the cast-in-place box girder, because the prestressed pipeline usually has a certain radian, the traditional manual work or the bundle penetrating device cannot smoothly penetrate the prestressed pipeline with a large radian in the bundle penetrating process, and the blockage phenomenon often occurs because the friction force between the steel bar head and the inner wall of the prestressed pipeline is too large, so that the steel bar can be seriously bent and deformed or can penetrate through the inner wall of the prestressed pipeline, and further, the poured box girder main body is damaged, and the construction progress and the construction quality are seriously influenced.

Therefore, a new prestressed reinforcement penetration device in post-tensioning construction of a cast-in-place box girder is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a novel technical scheme for pre-stressed reinforcement beam penetration by a cast-in-place box girder post-tensioning method.

According to the first aspect of the invention, the post-tensioning prestressed reinforcement penetrating device for the cast-in-place box girder comprises a penetrating mechanism, wherein the penetrating mechanism comprises a penetrating motor and a penetrating pressing wheel set, the penetrating motor drives the penetrating pressing wheel set to rotate, the penetrating pressing wheel set comprises at least one pair of pressing wheels, the pair of pressing wheels respectively extrude two sides of the prestressed reinforcement, a guide mechanism is arranged on the penetrating mechanism and comprises a guide head and a guide block, the rear end of the guide head is provided with a fixing hole, the front end of the prestressed reinforcement is inserted into the fixing hole to be fixed, and at least three first guide wheels are uniformly arranged on the periphery of the guide head; the guide block is provided with a plurality of, the guide block evenly overlap establish to on the prestressing steel and with prestressing steel sliding connection, evenly be provided with at least three second leading wheel around the guide block, between the guide block and the guide block with all be connected through connecting the rope between the direction head.

According to the scheme, the guide head is fixed to the end part of the prestressed reinforcement, and plays a role in guiding under the guiding action of the first guide wheel, so that the end part of the prestressed reinforcement can advance along the bent prestressed pipeline, and construction damage caused by scratching or knocking the inner wall of the pipeline by the sharp end part of the prestressed reinforcement is avoided; the guide blocks are uniformly arranged on the prestressed steel bars, so that the smoothness of the prestressed steel bars in the penetrating process can be further improved, the friction damage of other parts of the bent prestressed steel bars on the inner wall of the pipeline is avoided, and the reliability of the penetrating process of the steel bars is ensured; the guide head and the guide block connected by the connecting rope can improve the integrity, keep the position of the guide block stable, and pull the guide head to pull out all the guide blocks after the threading is finished, so that the next operation can be performed.

Preferably, the front end of the guide head is conical or circular truncated cone-shaped, and a cleaning brush is arranged at the front end of the guide head.

By the scheme, the shape of the cone or the round platform can improve the guiding performance of the guiding head; the setting of brush cleaner can clean rubble dust etc. in the prestressing force pipeline, avoids wearing to restraint to the reinforcing bar and causes the hindrance influence.

Preferably, the periphery of the guide head is provided with a plurality of first guide grooves in a penetrating manner along the extending direction of the prestressed reinforcement, and the first guide grooves are located between the first guide wheels.

Through this scheme, first guide way can lead to between the first leading wheel with great rubble in the prestressing force pipeline, avoids the rubble to block the rotation of first leading wheel, causes to wear to restraint the difficulty.

Preferably, the first guide wheel is slidably connected to a first accommodating groove of the guide head, and a first spring is arranged at the bottom of the first accommodating groove and always applies an outward force to the first guide wheel.

Through this scheme, make first leading wheel can adapt to the change of pipeline internal diameter, and adapt to the sticky concrete piece that links of pipeline inner wall, improve and wear the smooth nature of restrainting the in-process.

Preferably, the inner wall of the fixing hole is provided with at least one first magnetic block; the rear end of direction head is provided with at least one first solid fixed ring, be provided with the solid fixed ring of second on the guide block, connect the rope and pass through first solid fixed ring with the solid fixed ring of second is connected the direction head with the guide block.

Through this scheme, be provided with first magnetic force piece and can improve the fastness that prestressing steel and direction head are connected to be convenient for connect fixedly.

Preferably, a plurality of second accommodating grooves are formed in the periphery of the guide block, the second guide wheels are connected to the second accommodating grooves in a sliding mode, second springs are arranged at the bottoms of the second accommodating grooves, and the second springs always apply outward force to the second guide wheels.

Through this scheme, make the guide block adapt to the change of prestressing force pipeline internal diameter, improve the smoothness nature that the prestressing steel worn the bundle.

Preferably, a through hole is formed in the middle of the guide block, and the guide block is sleeved on the prestressed reinforcement through the through hole; and a sliding sleeve is arranged on the inner wall of the through hole.

Through this scheme, the setting of sliding sleeve can reduce the frictional force between guide block and the prestressing steel to conveniently wear to restraint and pull out the guide block after accomplishing.

Preferably, the guide block comprises two splicing bodies which are spliced with each other, the combining surface of each splicing body is provided with a plurality of second magnetic blocks, and the splicing bodies are attracted and fixed through the second magnetic blocks.

Through this scheme, conveniently establish the guide block cover to the prestressing steel on to make and wear to restraint the mechanism and press close to the case roof beam and arrange, reduce the space that the construction occupy, improve the efficiency of construction.

Preferably, the combined body is connected into the storage tank in a sliding manner, the two sides of the strand pulling mechanism are respectively fixed with one storage tank, and the outlet of the storage tank inclines towards the steel bar outlet of the strand pulling mechanism.

Through the scheme, the guide block can be stored in the storage tank, so that the guide block is convenient to manage and use; need not the manual work and carry out the lock installation to the fit, improve the convenience that this device used.

Preferably, the storage tank comprises a tank body and a rope cavity, the rope cavity is located on one side of the tank body and communicated with the tank body, the splicing body is connected to the tank body in a sliding mode, and the connecting rope is arranged in the rope cavity in a bending mode.

Through this scheme, will connect the rope and deposit to the rope chamber in, avoid connecting the rope winding to the amalgamation body on, improve the clean and tidy nature that the amalgamation body was arranged in the holding tank to improve the gliding smoothness nature and the reliability of the amalgamation body in the cell body.

According to an embodiment of the disclosure, the device is simple in structure, convenient and fast to use, can adapt to bending arrangement of the prestressed pipeline in the box girder poured by the post-tensioning method, greatly improves construction efficiency, can greatly improve the reliability of penetrating prestressed steel bars, reduces or avoids damage to components in the reinforcing bar penetrating process, and greatly improves the qualification rate of box girder construction.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic front view structure view of a cast-in-place box girder post-tensioning prestressed reinforcement strand-penetrating device according to an embodiment of the present invention.

Fig. 2 is a schematic top view of the cast-in-place box girder post-tensioning prestressed reinforcement strand penetrating device in fig. 1.

Fig. 3 is a schematic view of a connecting structure of a guide head and a guide block in the cast-in-place box girder post-tensioning prestressed reinforcement beam penetrating device in fig. 1.

Fig. 4 is a schematic view of the structure of the guide head of fig. 3.

Fig. 5 is a schematic sectional view taken along the line a-a in fig. 4.

Fig. 6 is a schematic structural view of the guide block of fig. 3.

Fig. 7 is a schematic sectional view taken along the direction B-B in fig. 6.

FIG. 8 is a schematic view showing the arrangement of guide blocks in the storing bath of FIG. 1.

Fig. 9 is a schematic cross-sectional view taken along line C-C in fig. 8.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Examples

As shown in fig. 1 to 9, the cast-in-place box girder post-tensioning prestressed reinforcement beam penetrating device in the embodiment includes a beam penetrating mechanism 2000, the beam penetrating mechanism 2000 comprises a beam penetrating motor and a beam penetrating pinch roller set, the beam penetrating motor drives the beam penetrating pinch roller set to rotate, the penetrating pinch roller set comprises at least one pair of pinch rollers, the pinch rollers respectively extrude two sides of the prestressed reinforcement 3000, the beam-penetrating mechanism 2000 is provided with a guide mechanism 1000, the guide mechanism 1000 comprises a guide head 1100 and a guide block 1200, the rear end of the guide head 1100 is provided with a fixing hole 1101, the front end of the prestressed reinforcement 3000 is inserted into the fixing hole 1101 to be fixed, at least three first guide wheels 1120 are uniformly arranged on the periphery of the guide head 1100 (in this embodiment, four first guide wheels 1120 are uniformly arranged on the periphery of the guide head 1100), and the first guide wheels 1120 can roll along the direction of penetrating the reinforcing steel bars;

the guide blocks 1200 are provided with a plurality of guide blocks 1200, the guide blocks 1200 are uniformly sleeved on the prestressed reinforcement 3000 and are in sliding connection with the prestressed reinforcement, at least three second guide wheels 1220 are uniformly arranged around the guide blocks 1200 (in this embodiment, four second guide wheels 1220 are provided and are uniformly arranged around the guide blocks 1200), the guide blocks 1200 and the guide heads 1100 are connected through connecting ropes 1300, and the second guide wheels 1220 can roll along the direction in which the reinforcement is threaded.

The guide head 1100 and the guide block 1200 in this embodiment are, for example, both of a cylindrical structure (a cylinder or a prism), and the maximum diameter of each of the guide head 1100 and the guide column 1200 is not larger than the minimum diameter of the prestressed pipe, so that the guide head 1100 and the guide column 1200 can penetrate into the prestressed pipe along with the prestressed reinforcement; and the main body structures of the guide head 1100 and the guide block 1200 are stainless steel or aluminum alloy products, so that the guide head has certain strength and can bear certain pressure, and damage caused by the thrust of the reinforcing steel bar in the threading process is avoided.

The guide blocks 1200 are uniformly arranged on the prestressed reinforcement 3000, can play a role in guiding any part of the prestressed reinforcement 3000, can further improve the smoothness of the whole prestressed reinforcement 3000 in the process of penetrating the prestressed reinforcement, avoids friction damage to the inner wall of the pipeline caused by other parts of the bent prestressed reinforcement 3000, and ensures the reliability of the process of penetrating the reinforcement;

the guide head 1100 and the guide block 1200 connected by the connecting rope 1300 can improve integrity, when the prestressed reinforcement 3000 pushes the guide head 1100 forwards, the connecting rope 1300 can pull the guide block 1200 to move forwards, the position of the guide block 1200 is kept stable, and after the threading is finished, the guide head 1100 can be pulled to pull out all the guide blocks 1200, so that the next operation is carried out; the connecting rope 1300 is, for example, a nylon rope or a steel wire rope.

By the scheme of the embodiment, the guide head 1100 is fixed to the end of the prestressed reinforcement 3000, and plays a role in guiding under the guiding action of the first guide wheel 1120, so that the end of the prestressed reinforcement 3000 can advance along a bent prestressed pipe (not shown in the figure), and the construction damage caused by scratching or impacting the inner wall of the pipe by the end of the sharp prestressed reinforcement 3000 is avoided;

when the device in this embodiment is used, the guide block 1200 may be manually sleeved on the prestressed reinforcement, the guide head 1100 may be sleeved on the end of the prestressed reinforcement 3000, or a specific tool may be used to install the guide block 1200 on the prestressed reinforcement 3000 while threading after the guide head 1100 is completely sleeved and starts to be threaded.

In this embodiment or other embodiments, the front end of the guide head 1100 is conical or truncated cone-shaped, and a cleaning brush 1103 is disposed at the near front end of the guide head 1100. The shape of the cone or truncated cone can improve the guiding performance of the guiding head 1100; due to the arrangement of the cleaning brush 1103, broken stone dust and the like in the prestressed pipeline can be cleaned, and the influence of obstruction caused by the penetration of the reinforcing steel bars is avoided.

In this embodiment or other embodiments, a plurality of first guide grooves 1102 are formed through the outer periphery of the guide head 1100 in the direction in which the prestressed reinforcement 3000 extends, the first guide grooves 1102 are located between the first guide wheels 1120, and the first guide grooves 1102 are in a bell mouth shape. In the course of putting through the bundle, the cleaning brush 1103 can encounter some rubbles that are difficult to clean in the cleaning process, and the rubbles can enter the first guide groove 1102 under the guiding action of the first guide groove 1102 after crossing the cleaning brush 1103, and the first guide groove 1102 can guide the rubbles to the position between the first guide wheels 1120, so that the first guide wheels 1120 can avoid the rubbles, and the rubbles are prevented from blocking the rotation of the first guide wheels 1120, and the difficulty of putting through the bundle is caused.

In this embodiment or other embodiments, the first guide wheel 1120 is slidably connected to the first receiving groove 1110 of the guide head 1100, a first spring 1111 is disposed at the bottom of the first receiving groove 1110, the first spring 1111 always applies an outward force to the first guide wheel 1120, so that the first guide wheel 1120 can always abut against the inner wall of the prestressed pipe and can change along with the change of the diameter of the pipe (for example, a concrete block adhered to the inner wall of the pipe, etc.), and the first guide wheel 1120 can adapt to the prestressed pipe with different diameters and adapt to the concrete block adhered to the inner wall of the pipe, thereby improving the smoothness during the threading process and avoiding the sudden decrease and the blocking of the inner diameter of the pipe.

In this embodiment or other embodiments, at least one first magnetic block 1105 is disposed on an inner wall of the fixing hole 1101, and the first magnetic block 1105 can adsorb the prestressed reinforcement 3000, so as to improve the connection firmness between the prestressed reinforcement 3000 and the guide head 1100, and avoid the guide head 1100 from falling off and losing the guiding effect in the threading process.

The rear end of direction head 1100 is provided with at least one first solid fixed ring 1104, the guide block 1200 both ends all are provided with the solid fixed ring 1206 of second around, connect the rope 1300 to pass through first solid fixed ring 1104 and the solid fixed ring 1206 of second is connected the direction head 1100 and the guide block 1200. In order to improve the firmness, a through hole may be used on the guide block 1200 instead of the second fixing ring 1206, the through hole is arranged along the threading direction, and the connecting rope 1300 penetrates through the through hole to be connected and fixed with the guide block 1200.

In this embodiment or other embodiments, a plurality of second receiving grooves 1210 are disposed around the guide block 1200, the second guide wheel 1220 is slidably connected to the second receiving grooves 1210, a second spring 1211 is disposed at the bottom of the second receiving grooves 1210, the second spring 1211 always applies an outward force to the second guide wheel 1220, so that the second guide wheel 1120 can always abut against the inner wall of the prestressed pipe and can change along with the change of the diameter of the pipe (for example, a concrete block adhered to the inner wall of the pipe), and the second guide wheel 1120 can adapt to the prestressed pipe with different diameters and adapt to the concrete block adhered to the inner wall of the pipe, thereby improving the smoothness during the threading process and preventing the inner diameter of the pipe from suddenly decreasing and being stuck.

In this embodiment or other embodiments, a through hole 1202 is formed in the middle of the guide block 1200, and the guide block 1200 is sleeved on the prestressed reinforcement 3000 through the through hole 1202; the inner wall of the through hole 1202 is provided with a sliding sleeve 1203. The sliding sleeve 1203 is arranged to reduce the friction between the guide block 1200 and the prestressed reinforcement 3000, so that the guide block 1200 can be conveniently pulled out after the penetration is completed. This sliding sleeve 1203 is for example the linear bearing, or the sleeve that self-lubricating material made, can reduce the frictional force with between the reinforcing bar after the cover is established to prestressing steel 3000.

Be provided with second guide way 1205 on guide block 1200 in this embodiment, the both ends of second guide way 1205 are horn mouth formula structure, and this second guide way 1205 sets up between second leading wheel 1220, and second guide way 1205 extends the direction that the prestressing steel extends and arranges, and the effect that acts on first guide way of second guide way 1205 is unanimous, prevents that the dead second leading wheel 1220 of rubble card.

In this embodiment or other embodiments, the guide block 1200 includes two split bodies 1201 split with each other, the combining surface of the split body 1201 is provided with a plurality of second magnetic blocks 1204, and the split body 1201 is attracted and fixed by the second magnetic blocks 1204. Two amalgamation bodies 1201 amalgamate jointly and form guide block 1200 to conveniently establish guide block 1200 cover to prestressing steel 3000 on, thereby make and wear to restraint mechanism 2000 and press close to the case roof beam and arrange, need not to arrange a plurality of guide blocks 1200 in order in advance and wait for getting into the prestressing force pipeline, should set up and can reduce the space that the construction occupy, improve the efficiency of construction.

The sliding sleeve 1203 in this embodiment is composed of two half cylinders, the sliding sleeves of the half cylinders are fixed to the split body 1201, and after the split body 1201 is completed, the two half cylinders are split to form a complete cylinder sleeve.

In the use, along with wearing of prestressing steel 3000 to restraint, manual work or specific mechanism will be according to certain speed or arrange the distance with two amalgamation body 1201 amalgamations to prestressing steel 3000 on, make sliding sleeve 1203 wrap up to prestressing steel 3000 on, accomplish guide block 1200's installation.

In this embodiment or other embodiments, the combined body 1201 is slidably connected to the storage groove 1400, one storage groove 1400 is fixed on each side of the lacing mechanism 2000, the outlet of the storage groove 1400 is inclined towards the rebar outlet of the lacing mechanism 2000, and the storage groove 1400 can store and store the guide block 1200, which is convenient for management and use; in the use, prestressing steel 3000 promotes first 1100 of direction and advances, first 1100 of direction drags amalgamation body 1201 forward under dragging of connecting rope 1300, make amalgamation body 1201 slide forward and break away from holding tank 1400, because the export of holding tank 1400 is towards prestressing steel 3000 slope arrangement, and prestressing steel 3000 is pressed close to in the exit, consequently two amalgamation bodies 1201 can the mutual contact and the mutual actuation is fixed under the appeal of second magnetic force piece 1204 after being pulled out holding tank 1400, thereby the cover is established to prestressing steel 3000 on, this setting need not the manual work and carries out the lock installation to amalgamation body 1201, the convenience that improves this device and use.

In this embodiment or other embodiments, the storage tank 1400 includes a slot 1410 and a rope chamber 1420, the rope chamber 1420 is located at one side of the slot 1410 and communicates with the slot 1410, the split 1201 is slidably connected to the slot 1410, and the connecting rope 1300 is bent and arranged in the rope chamber 1420. Deposit connecting rope 1300 to rope chamber 1420, avoid connecting rope 1300 to twine on the amalgamation body 1201 and the amalgamation body 1201 that leads to can not effective roll-off, improve the neatness nature that the amalgamation body 1201 arranged in the holding tank 1400 to improve the gliding smoothness nature and the reliability of the amalgamation body 1201 in the cell 1410, when the amalgamation body 1201 is pulled out in proper order, connect rope 1300 and can follow rope chamber 1420 and slide forward in proper order, thereby drag out next amalgamation body 1201.

The arrangement also enables the split body 1201 to be compactly arranged, effectively shortens the length of the storage tank 1400, and is convenient to carry and use.

In this embodiment, for the compactness that the split 1201 arranged further improves, the solid 1206 of second fixed ring sets up in second guide way 1205, makes the tip of split 1201 can closely laminate together, not only arranges compactlyer, can also reduce the winding probability of connecting rope 1300, improves the reliability.

The groove 1410 in this embodiment is provided with a guide strip 1411, the guide strip 1411 protrudes to the inner side of the groove 1410, and the sliding sleeve 1203 side of the split 1201 is clamped on the guide strip 1411, so as to maintain the stability of the position of the split 1201 in the groove 1410. And the groove body 1410 can be matched with the second guide wheel 1220, so that the second guide wheel 1220 can be contacted with the inner wall of the groove body 1410 in an abutting mode and connected in a rolling mode, and the stability of the angle of the split body 1201 in the groove body 1410 is further improved.

According to the embodiment, the device is simple in structure, convenient and fast to use, can adapt to the bending arrangement of the prestressed pipeline in the box girder poured by the post-tensioning method, greatly improves the construction efficiency, can greatly improve the reliability of penetrating prestressed reinforcements, reduces or avoids the damage to components in the reinforcing reinforcement penetrating process, and greatly improves the qualification rate of box girder construction.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (8)

1. A post-tensioning prestressed reinforcement penetrating device for a cast-in-place box beam comprises a penetrating mechanism, wherein the penetrating mechanism comprises a penetrating motor and a penetrating pressure wheel set, the penetrating motor drives the penetrating pressure wheel set to rotate, the penetrating pressure wheel set comprises at least one pair of pressure wheels, and the pair of pressure wheels respectively extrude two sides of a prestressed reinforcement; the guide blocks are uniformly sleeved on the prestressed steel bars and are in sliding connection with the prestressed steel bars, at least three second guide wheels are uniformly arranged on the periphery of each guide block, and the guide blocks and the guide heads are connected through connecting ropes; a through hole is formed in the middle of the guide block, and the guide block is sleeved on the prestressed reinforcement through the through hole; a sliding sleeve is arranged on the inner wall of the through hole; the guide block comprises two splicing bodies which are spliced with each other, the combining surface of each splicing body is provided with a plurality of second magnetic blocks, each splicing body is fixed by the attraction of the second magnetic blocks, and the sliding sleeve is composed of two semi-cylinders.

2. The cast-in-place box girder post-tensioning prestressed reinforcement strand-penetrating device according to claim 1, wherein the front end of the guide head is conical or truncated cone-shaped, and a cleaning brush is arranged at the front end of the guide head.

3. The cast-in-place box girder post-tensioning prestressed reinforcement strand-penetrating device according to claim 2, wherein a plurality of first guide grooves penetrate through the periphery of the guide head along the extending direction of the prestressed reinforcement, and the first guide grooves are located between the first guide wheels.

4. The cast-in-place box girder post-tensioning prestressed reinforcement strand pulling device as claimed in claim 1, wherein the first guide wheel is slidably connected to a first accommodating groove of the guide head, and a first spring is disposed at the bottom of the first accommodating groove and always applies an outward force to the first guide wheel.

5. The cast-in-place box girder post-tensioning prestressed reinforcement beam penetrating device according to claim 1, wherein at least one first magnetic block is arranged on the inner wall of the fixing hole; the rear end of direction head is provided with at least one first solid fixed ring, be provided with the solid fixed ring of second on the guide block, connect the rope and pass through first solid fixed ring with the solid fixed ring of second is connected the direction head with the guide block.

6. The cast-in-place box girder post-tensioning prestressed reinforcement strand-penetrating device according to claim 1, wherein a plurality of second accommodating grooves are formed around the guide block, the second guide wheels are slidably connected into the second accommodating grooves, and a second spring is arranged at the bottom of each second accommodating groove and always applies an outward force to each second guide wheel.

7. The cast-in-place box girder post-tensioning prestressed reinforcement strand pulling device according to claim 6, further comprising a storage groove, wherein the spliced body is slidably connected into the storage groove, one storage groove is fixed on each of two sides of the strand pulling mechanism, and an outlet of the storage groove is inclined towards a reinforcement outlet of the strand pulling mechanism.

8. The cast-in-place box girder post-tensioning prestressed reinforcement strand-penetrating device according to claim 7, wherein the storage tank comprises a tank body and a rope cavity, the rope cavity is located on one side of the tank body and communicated with the tank body, the splicing body is connected into the tank body in a sliding mode, and the connecting rope is arranged in the rope cavity in a bending mode.

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