CN216108099U - Box girder steel strand penetrating device - Google Patents
Box girder steel strand penetrating device Download PDFInfo
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- CN216108099U CN216108099U CN202122002061.XU CN202122002061U CN216108099U CN 216108099 U CN216108099 U CN 216108099U CN 202122002061 U CN202122002061 U CN 202122002061U CN 216108099 U CN216108099 U CN 216108099U
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- strand pulling
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Abstract
The utility model relates to a box girder steel strand pulling device, and relates to the technical field of building construction equipment. The box girder steel strand pulling device comprises a steel strand pulling frame body provided with a transfer wheel and a steel strand pulling machine body which moves up and down and is assembled on the steel strand pulling frame body; the steel strand pulling machine body comprises a transmission case and a speed reducing motor, a transmission middle shaft in transmission connection with an output shaft of the speed reducing motor is arranged in the transmission case, and the transmission middle shaft is in transmission connection with a roller assembly through a gear transmission mechanism; the roller component comprises a plurality of pairs of roller groups which are sequentially arranged and linked, each roller group comprises two pairs of rollers which are matched with each other and used for clamping the steel strands, each pair of rollers is provided with at least two wheel grooves which are arranged at intervals and surround the circumferences of the pairs of rollers, and the wheel grooves and the steel strands are suitable for allowing the steel strands to pass through between the two pairs of rollers; and guide pieces are respectively welded on two side walls of the transmission case in the strand penetrating direction of the steel strands. The box girder steel strand pulling device improves the pulling efficiency of the steel strands on the construction site.
Description
Technical Field
The utility model relates to the technical field of building construction equipment, in particular to a box girder steel strand pulling device.
Background
In the process of erecting the bridge, after the prestressed concrete is poured, steel strands need to be threaded into the reserved hole channels in the concrete beam. The manual threading is adopted for years, so that the efficiency is low and the labor is wasted. With the development of science and technology, people develop steel strand pulling machines, which replace manual operation with mechanical operation, reduce troubles and improve efficiency. The steel strand pulling machine becomes an indispensable building machine for erecting the railway bridge. The steel strand pulling machine is also called a prestressed steel strand threading machine, a steel strand shuttle machine, a steel strand pulling machine and a steel strand pipe threading machine, the steel strand pulling machine is called a pulling machine for short, and is used for pulling, and the steel strand pulling machine is used for conveying steel strands by mechanical transmission and roller clamping, can advance, retreat, can continuously convey and can also be used for inching conveying to convey the speed of the steel strands to realize stepless speed regulation.
In the construction process of an existing bridge, a plurality of prefabricated box girders are usually prefabricated on a construction site, but the number of steel strand pulling machines on the construction site is limited, in the process of specifically pulling and installing steel strands, the steel strand pulling machines are often required to be transported to the prefabricated box girders at different positions, the height of the steel strand pulling machines is required to be adjusted, the steel strand pulling machines can only pull and install one strand of steel strand at each time, and by combining the above factors, the pulling efficiency of the steel strands is improved more quickly on the construction site, so that the technical problem which needs to be solved urgently is solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to provide a box girder steel strand pulling device to improve the steel strand pulling efficiency of a bridge construction site.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a box girder steel strand pulling device comprises:
the steel strand pulling frame body is provided with a transfer wheel at the bottom end;
the steel strand pulling machine body comprises a transmission case and a speed reducing motor, the transmission case is assembled on the steel strand pulling frame body in a vertically moving mode, a transmission middle shaft in transmission connection with an output shaft of the speed reducing motor is arranged in the transmission case, and the transmission middle shaft is in transmission connection with a roller assembly through a gear transmission mechanism; the roller assembly comprises a plurality of pairs of roller sets which are sequentially arranged outside the transmission case and are linked, each roller set comprises two matched pair rollers for clamping the steel strand, at least two wheel grooves which are arranged at intervals and surround the circumference of the pair rollers are arranged on each pair roller along the axial direction of the pair rollers, and the wheel grooves are suitable for the steel strand to pass through between the two pair rollers; and the two side walls of the transmission case in the strand pulling direction are respectively welded with one-to-one corresponding guide pieces for the corresponding steel strands to pass through.
The beneficial effects of the above technical scheme are: the box girder steel strand pulling device combines the movable steel strand pulling frame body and the steel strand pulling machine body to play a synergistic role, namely the steel strand pulling machine body can move up and down along the steel strand frame body to pull steel strands with different heights, and after pulling is finished, the steel strand pulling machine body can be easily moved to different positions by using the transfer wheel at the bottom of the steel strand frame body, so that manual carrying is not needed, the labor intensity is reduced, the labor is saved, and the efficiency is improved; in addition, the steel strand pulling machine body can pull at least two bundles of steel strands at one time, the pulling speed of the steel strands is improved, the steel strands are guided by the guide piece when being pulled, the phenomena that the steel strands are bent and wound after being conveyed from the roller assembly are avoided, and the pulling quality of the steel strands is guaranteed.
Further, in the radial direction of the pair of rollers, the section of the wheel groove is V-shaped.
Has the advantages that: the steel strand is in contact with both surfaces of the V-shaped wheel groove, and the transmission distance of the steel strand can be increased under the condition that the input power of the speed reducing motor is unchanged.
Furthermore, the guide piece includes deflector and stand pipe, and the deflector is connected with the corresponding lateral wall welded connection of transmission machine case, the quantity of stand pipe with the quantity of race is the same, be equipped with side by side arrange and with the jack of each stand pipe one-to-one grafting on the deflector, each stand pipe is pegged graft with the jack one-to-one and is cooperated and both grafting complex part welded connection.
Has the advantages that: simple structure connects firmly, can lead to the multi-beam steel strand wires simultaneously.
Further, the steel strand wires are worn to restraint support body includes that two are formed by connecting the horizontal pole and connecting the vertical pole welding and are connected the stand at four angle departments of each rectangular frame in the parallel spaced of upper and lower direction, four are that the rectangle distributes and correspond the connection, and the bottom at the stand is installed to the transfer wheel one-to-one, has cup jointed gliding regulation pole from top to bottom respectively on two stands that arrange along the wheelset array direction, and two are adjusted and have welded the slide bar of two interval arrangements perpendicularly between the pole, the transmission machine case is connected in order to reciprocate through slide bar and regulation pole.
Has the advantages that: the upper and lower height of the steel strand pulling machine body can be conveniently adjusted to meet the pulling requirements of steel strands with different heights.
Furthermore, an electric lifting mechanism which is hooked and matched with the transmission case is fixed on the rectangular frame positioned at the uppermost part.
Has the advantages that: the height of the steel strand machine body can be adjusted in an electric mode, so that the steel strand machine is more convenient and labor-saving.
Furthermore, the bottom of the transmission case is fixedly welded with a first channel steel with a downward slot at the position corresponding to the two slide bars, the first channel steel is pressed on the slide bars from top to bottom, a second channel steel with an upward slot is fixedly welded on the outer side of the first channel steel, the second channel steel is pressed on the slide bars from bottom to top, and the first channel steel and the second channel steel form a sleeve which is sleeved on the slide bars and can move along the length direction of the slide bars.
Has the advantages that: the transmission case vibrates easily in the process of conveying the steel strand, and the two channel steel are arranged to move relative to the sliding rod to relieve vibration, so that the use safety of the transmission case is guaranteed.
Furthermore, the wheel groove is coated with an elastic polyurethane layer.
Has the advantages that: the elastic polyurethane layer can play a role in protecting the outer coating of the steel strand, and the quality of the steel strand is ensured.
Drawings
Fig. 1 is a front view of a box girder steel strand pulling device of the present invention;
FIG. 2 is a side view of the box girder steel strand pulling device of the present invention;
FIG. 3 is a schematic structural diagram of a roller assembly in the box girder steel strand pulling device of the utility model;
fig. 4 is a schematic assembly diagram of the transmission case and the sliding rods in the box girder steel strand threading device.
Description of reference numerals: the steel strand pulling device comprises a 1-steel strand pulling frame body, 2-transfer wheels, 3-steel strand pulling machine bodies, 4-transmission case, 5-speed reducing motors, 6-electric hoists, 7-pair rolling wheels, 8-guide plates, 9-guide pipes, 10-wheel grooves, 11-steel strands, 12-connecting cross rods, 13-connecting longitudinal rods, 14-upright columns, 15-sliding rods, 16-adjusting rods, 17-adjusting sleeves, 18-first channel steel and 19-second channel steel.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
The utility model relates to a concrete embodiment of a box girder steel strand pulling device, which comprises the following steps:
as shown in fig. 1 and 2, the box girder steel strand pulling device includes a steel strand pulling frame 1 and a steel strand pulling machine body 3.
Specifically, the steel strand pulling frame body 1 comprises two rectangular frames which are formed by welding a connecting cross rod 12 and a connecting longitudinal rod 13 and are spaced in parallel in the up-down direction, and four upright columns 14 which are distributed in a rectangular shape and correspond to and are welded with four corners of each rectangular frame. The bottom of every stand all installs the fortune wheel 2 so that whole steel strand wires are worn to restraint support body 1 and can round trip movement.
The steel strand pulling machine body 3 comprises a transmission case 4 and a speed reducing motor 5, wherein the transmission case 4 is assembled on the steel strand pulling frame body 1 in a vertically moving mode so as to achieve vertical height adjustment of the steel strand pulling machine body 3. A transmission middle shaft in transmission connection with an output shaft of the speed reducing motor is arranged in the transmission case, and the transmission middle shaft is in transmission connection with a roller assembly through a gear transmission mechanism.
The roller component comprises a plurality of pairs of wheel sets which are sequentially arranged outside the transmission case 4 and are linked, and each wheel set comprises two pair rollers 7 which are matched with each other and used for clamping the steel strand 11. Along the axis direction of the pair of rollers 7, each pair of rollers 7 is provided with at least two wheel grooves 10 which are arranged at intervals and surround the circumference of the pair of rollers, and the wheel grooves and the steel strands are suitable for allowing the steel strands to pass through between the two pair of rollers. As shown in fig. 3, in the present embodiment, the cross section of the pulley groove is V-shaped in the radial direction of the counter roller, and when the twisted steel wire is conveyed, both surfaces of the V-shaped pulley groove are in contact with each other, so that the conveying distance of the twisted steel wire can be increased under the condition that the input power of the speed reduction motor is not changed. For avoiding damaging the surperficial coating of steel strand wires, the cladding has the elasticity polyurethane layer on race 10, and this elasticity polyurethane layer can also increase the friction between gyro wheel 7 and the steel strand wires 11 simultaneously, avoids taking place to skid in 11 transfer processes of steel strand wires, guarantees the quality of steel strand wires.
The gear transmission mechanism is in the prior art and comprises a driving gear coaxially fixed on a transmission middle shaft and gear shaft groups symmetrically arranged on the radial two sides of the driving gear. The gear shaft set comprises two transmission gear shafts which are arranged up and down and transmission gears which are respectively fixed on the transmission gear shafts, and two pair of rollers in each pair of wheel sets are respectively and coaxially fixed on the corresponding transmission gear shafts. The driving gear is meshed with the transmission gears which are arranged on the two sides of the driving gear and are positioned on the transmission gear shaft below the driving gear for transmission. And the two adjacent gear shaft groups transmit power through a transition gear between two adjacent transmission gears below.
Two corresponding guide pieces for the corresponding steel strands 11 to penetrate through are welded on two side walls of the transmission case 4 in the strand penetrating direction of the steel strands 11 respectively. As shown in fig. 1 and 2, the guide member includes a guide plate 8 and two guide tubes 9, the guide plate 8 is welded to the corresponding side wall of the transmission case 4, and the number of the guide tubes 9 is the same as that of the wheel grooves 10, and is two. The guide plate 8 is provided with jacks which are arranged side by side and are in one-to-one corresponding insertion connection with the guide pipes 9, the guide pipes 9 are in one-to-one corresponding insertion connection with the jacks, and the two parts are in insertion connection and matching and are welded.
Adjusting rods 16 capable of sliding up and down are respectively sleeved on two upright posts 14 arranged along the arrangement direction of the wheel sets, as shown in fig. 1, adjusting sleeves 17 with axes extending up and down are respectively welded at two ends of each adjusting rod 16, and the adjusting sleeves 17 are sleeved on the upright posts 14 and can slide up and down. Two sliding rods 15 which are arranged at intervals are vertically welded between the two adjusting rods 16, and the transmission case 4 is connected with the adjusting rods 16 through the sliding rods 15 so as to move up and down. Specifically, as shown in fig. 2 and 4, the bottom of the transmission case 4 is welded and fixed with a first channel steel 18 having a downward slot at a position corresponding to the two slide bars 15, and the first channel steel 18 is pressed on the slide bars 15 from top to bottom. The outside welded fastening of first channel-section steel 18 has the ascending second channel-section steel 19 of notch, and the notch width of second channel-section steel 19 is greater than the notch width of first channel-section steel 18 to make first channel-section steel 18 be pressed from both sides in second channel-section steel 19. The second channel steel 19 is pressed on the slide bar 15 from bottom to top, and the first channel steel 18 and the second channel steel 19 form a sleeve which is sleeved on the slide bar 15 and can move along the length direction of the slide bar 15. Like this, when transmission machine case 4 carried out the in-process that conveys steel strand wires 11 and takes place the vibration, set up two channel-section steels and can remove the slide bar relatively and alleviate the vibration, guarantee transmission machine case's safety in utilization.
In order to realize the up-and-down movement of the adjusting rod 16, an electric lifting mechanism which is hooked and matched with the transmission case 4 is fixed on the rectangular frame at the uppermost part. In this embodiment, electric hoist mechanism adopts electric block 6, and electric block 6 hangs on the rectangular frame of top to electric block 6's couple and the cooperation of 4 hooks of transmission machine case, through the switch of opening electric block 6, can wear to restraint the organism to promote to the steel strand wires.
The utility model discloses a using method of a box girder steel strand pulling device, which comprises the following steps: the height of the steel strand pulling machine body 3 is adjusted through the electric hoist 6, and the steel strands 11 pass through a guide piece on one side of the transmission case 4 and pass through a wheel groove 10 between two pair of idler wheels 7 in each wheel set until the steel strands penetrate out of the guide piece on the other side; then, a switch of the speed reducing motor 5 is started, and under the power transmitted by the gear transmission mechanism, each wheel set rotates to convey the steel strand 11 into a prestressed channel in the box girder; and after the steel strand is threaded to the designed length, closing the speed reducing motor, and manually cutting the steel strand by using a cutting machine to complete the threading process.
The box girder steel strand pulling device combines the movable steel strand pulling frame body and the steel strand pulling machine body to play a synergistic role, namely the steel strand pulling machine body can move up and down along the steel strand frame body to pull steel strands with different heights, and after pulling is finished, the steel strand pulling machine body can be easily moved to different positions by using the transfer wheel at the bottom of the steel strand frame body, so that manual carrying is not needed, the labor intensity is reduced, the labor is saved, and the efficiency is improved; in addition, the steel strand pulling machine body can pull at least two bundles of steel strands at one time, the pulling speed of the steel strands is improved, the steel strands are guided by the guide piece when being pulled, the phenomena that the steel strands are bent and wound after being conveyed from the roller assembly are avoided, and the pulling quality of the steel strands is guaranteed.
In other embodiments, the wheel groove may also be semi-arc shaped in cross section.
In other embodiments, the guide member may only include the guide tube, and in this case, the guide tube at the outermost side may be welded to the side wall of the conveyor box after the guide tubes are directly welded together.
In other embodiments, more than three wheel grooves can be arranged on the counter roller at intervals.
In other embodiments, the electric hoisting mechanism is not needed, the adjusting rod can be pushed upwards manually at the moment to move upwards, and the adjusting rod is locked by the locking structure at the moment.
In other embodiments, the electric lifting mechanism may also be a winch.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a case roof beam steel strand wires pulling device which characterized in that includes:
the steel strand pulling frame body is provided with a transfer wheel at the bottom end;
the steel strand pulling machine body comprises a transmission case and a speed reducing motor, the transmission case is assembled on the steel strand pulling frame body in a vertically moving mode, a transmission middle shaft in transmission connection with an output shaft of the speed reducing motor is arranged in the transmission case, and the transmission middle shaft is in transmission connection with a roller assembly through a gear transmission mechanism; the roller assembly comprises a plurality of pairs of roller sets which are sequentially arranged outside the transmission case and are linked, each roller set comprises two matched pair rollers for clamping the steel strand, at least two wheel grooves which are arranged at intervals and surround the circumference of the pair rollers are arranged on each pair roller along the axial direction of the pair rollers, and the wheel grooves are suitable for the steel strand to pass through between the two pair rollers; and the two side walls of the transmission case in the strand pulling direction are respectively welded with one-to-one corresponding guide pieces for the corresponding steel strands to pass through.
2. The box girder steel strand pulling device according to claim 1, wherein the cross-section of the sheave groove is V-shaped in a radial direction of the pair of sheaves.
3. The box girder steel strand pulling device according to claim 1, wherein the guide member comprises a guide plate and guide pipes, the guide plate is welded to the corresponding side wall of the transmission case, the number of the guide pipes is the same as that of the wheel grooves, the guide plate is provided with jacks which are arranged side by side and are in one-to-one corresponding insertion connection with the guide pipes, the guide pipes are in one-to-one corresponding insertion connection with the jacks, and the guide pipes and the jacks are partially welded to each other.
4. The box girder steel strand pulling device according to any one of claims 1 to 3, wherein the steel strand pulling frame body comprises two rectangular frames which are formed by welding a connecting cross rod and a connecting longitudinal rod and are spaced in parallel in the up-down direction, four upright columns which are distributed in a rectangular shape and are correspondingly connected to four corners of each rectangular frame, transfer wheels are installed at the bottoms of the upright columns in a one-to-one correspondence manner, adjusting rods which can slide up and down are respectively sleeved on the two upright columns which are arranged in the arrangement direction of the wheel sets, two sliding rods which are spaced are vertically welded between the two adjusting rods, and the transmission case is connected with the adjusting rods through the sliding rods to move up and down.
5. The box girder steel strand pulling device according to claim 4, wherein an electric lifting mechanism hooked and matched with the transmission case is fixed on the rectangular frame at the uppermost position.
6. The box girder steel strand pulling device according to claim 4, wherein a first channel steel with a downward slot is welded and fixed at the bottom of the transmission case corresponding to the positions of the two slide bars, the first channel steel presses the slide bars from top to bottom, a second channel steel with an upward slot is welded and fixed at the outer side of the first channel steel, the second channel steel presses the slide bars from bottom to top, and the first channel steel and the second channel steel form a sleeve which is sleeved on the slide bars and can move along the length direction of the slide bars.
7. The box girder steel strand pulling device according to any one of claims 1 to 3, wherein the pulley grooves are coated with an elastic polyurethane layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122002061.XU CN216108099U (en) | 2021-08-24 | 2021-08-24 | Box girder steel strand penetrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122002061.XU CN216108099U (en) | 2021-08-24 | 2021-08-24 | Box girder steel strand penetrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216108099U true CN216108099U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122002061.XU Active CN216108099U (en) | 2021-08-24 | 2021-08-24 | Box girder steel strand penetrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216108099U (en) |
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2021
- 2021-08-24 CN CN202122002061.XU patent/CN216108099U/en active Active
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