Flange plate steel strand threading equipment

Abstract

The application relates to a flange plate steel strand threading equipment, which comprises a mounting frame, a rolling roller and an adjusting roller rotatably arranged on the mounting frame, and the rolling roller and the adjusting roller are driven to rotate by a driving assembly; the adjusting roller has a plurality of rolling sections arranged side by side along the direction of the rotating axis of the adjusting roller, the radii of the rolling sections are different, and the steel strand passes between the rolling sections and the rolling roller; the driving assembly comprises a transmission rod in transmission connection with the adjusting roller, a mounting hole is formed in the mounting frame, the transmission rod is arranged in the mounting hole, the transmission rod drives the adjusting roller to rotate and axially move, and the rolling sections corresponding to the rolling roller are changed when the adjusting roller axially moves. When the threading of steel strands with different sizes is carried out, a plurality of sets of steel strand threading equipment need not be prepared, the adjusting roller only needs to be axially moved, the operation is convenient and fast, the threading equipment need not be replaced, the construction cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of civil engineering construction, and in particular to a device for threading steel strands in flange plates. Background Technology

[0002] When installing negative moment steel strands under the flange of a precast beam, construction workers often use steel strand threading equipment to assist in threading the strands in order to improve construction efficiency.

[0003] For example, patent application number 202220036494.9 discloses a steel strand threading machine for bridge construction, which uses mechanical transmission and rollers to clamp and transport the steel strands. However, in the above application, the position of the rollers for transporting the steel strands is fixed, and the distance between the upper and lower rollers is not adjustable. Therefore, it can only transport steel strands of a certain size, with a narrow range of applications. In actual construction, in order to cope with steel strands of different sizes, it may be necessary to frequently change different equipment, which is cumbersome.

[0004] Therefore, there is an urgent need for a steel strand threading device that can adapt to steel strands of different sizes. Utility Model Content

[0005] Therefore, this application provides a device for threading flange steel strands.

[0006] This application provides a flange plate steel strand threading device, which adopts the following technical solution: A flange plate steel strand threading device includes a mounting frame. A pressing roller and an adjusting roller are rotatably mounted on the mounting frame. The pressing roller and the adjusting roller are driven to rotate by a drive assembly. The adjusting roller has multiple parallel pressing sections along its rotation axis, each with a different radius. The steel strand passes between the pressing sections and the pressing roller. The drive assembly includes a transmission rod tractor connected to the adjusting roller. The mounting frame has mounting holes, and the transmission rod passes through these holes. The transmission rod drives the adjusting roller to rotate and move axially. When the adjusting roller moves axially, it changes the pressing section corresponding to the pressing roller.

[0007] By adopting the above technical solution, the axial adjustment of the adjusting roller can change the distance between the compaction section and the compaction roller. The steel strand passes between the compaction section and the compaction roller. As the compaction roller and compaction section rotate, they squeeze and push the steel strand forward. Therefore, adjusting the distance between the compaction roller and the compaction section allows this equipment to be used for steel strands of various sizes. When threading steel strands of different sizes, it is not necessary to prepare multiple sets of steel strand threading equipment; only the adjusting roller needs to be moved axially, which is convenient and quick. It eliminates the need to replace the entire threading equipment, reducing construction costs and improving construction efficiency. The drive rod is rotatably mounted in a mounting hole on the mounting frame, facilitating the rotation and axial movement of the rotating rod within the mounting hole. Since the rotating rod is connected to the adjusting roller, it can drive the adjusting rod to rotate and move axially.

[0008] Preferably, the drive assembly includes a drive shaft that is connected to the rolling roller, and the drive shaft is rotatably mounted on the mounting frame; the drive assembly also includes a drive gear mounted on the drive shaft and a driven gear mounted on the drive rod, the drive gear is driven to rotate by the drive motor, the driven gear meshes with the drive gear, and when the driven gear follows the axial displacement of the drive rod, the driven gear remains meshed with the drive gear.

[0009] By adopting the above technical solution, the drive motor can simultaneously drive the adjusting roller and the pressing roller to rotate. When the adjusting roller moves axially, the driven gear generates axial displacement relative to the driving gear, but there is still sufficient contact between the driving gear and the driven gear. The meshing state of the driving gear and the driven gear remains unchanged, and they can always maintain meshing and synchronous rotation.

[0010] Preferably, each of the multiple rolling sections of the adjusting roller is provided with a rolling groove, and the rolling groove is also provided on the contact surface between the rolling roller and the steel strand.

[0011] By adopting the above technical solution, the rolling groove can limit the steel strand and prevent it from falling off during the threading process. On the other hand, when the steel strand is clamped in the rolling groove, the adjusting roller will not move axially due to the pressure between the adjusting roller and the steel strand. This can avoid axial displacement of the adjusting roller during the threading process. The rolling section on the adjusting roller can only be adjusted after the steel strand is pulled out.

[0012] Preferably, the mounting frame is provided with a plurality of adjusting rollers and a plurality of pressing rollers, and the plurality of adjusting rollers and the plurality of pressing rollers are driven by a plurality of driving gears and a plurality of driven gears, respectively. The plurality of driving gears are connected to each other by a transmission gear set, and the transmission gear set is driven by the drive motor.

[0013] By adopting the above technical solution, the steel strand is simultaneously squeezed and driven through multiple relatively arranged adjusting rollers and pressing rollers, resulting in a greater driving force on the steel strand. The multiple relatively arranged adjusting rollers and pressing rollers are installed in a certain direction, making it easier to guide the steel strand.

[0014] Preferably, the transmission gear set includes multiple fixed wheels and multiple transmission wheels. The multiple fixed wheels are respectively fixed on multiple transmission shafts, and the transmission wheels are rotatably mounted on the mounting frame. The transmission wheels are located between adjacent fixed wheels and simultaneously mesh with adjacent fixed wheels.

[0015] By adopting the above technical solution, through the meshing between the fixed wheel and the transmission wheel, only one drive motor can drive multiple fixed wheels to rotate simultaneously. Moreover, the multiple fixed wheels are respectively fixed on multiple transmission shafts. Therefore, one drive motor can drive multiple transmission shafts to rotate simultaneously, making the structure of the entire device more compact and the cost lower.

[0016] Preferably, the mounting frame is configured as a box-shaped frame, the pressing roller and the adjusting roller are rotatably disposed on the side of the box-shaped frame, and the pressing roller and the adjusting roller are located on the outside of the box-shaped frame, and the driving assembly is disposed on the inside of the box-shaped frame.

[0017] By adopting the above technical solution, firstly, the box-type frame can separate the adjusting roller and crushing roller of the extruded steel strand from the drive assembly, thereby protecting the drive gear, preventing foreign objects from being caught in the gear when it rotates, and also preventing gear injuries; secondly, the box-type frame has two opposite sides and high structural strength, which facilitates the installation of the drive shaft, drive rod and various gears.

[0018] Preferably, the mounting frame is also provided with an inlet pipe, and the steel strand passes through the inlet pipe before passing through the adjusting roller and the rolling roller.

[0019] Preferably, the mounting frame is also provided with a cable outlet tube. The steel strand passes through the adjusting roller and the rolling roller and then through the cable outlet tube. One end of the cable outlet tube is located on the side of the mounting frame, and the radius of the other end is reduced inward to form a cable outlet. An observation port is provided on the cable outlet tube.

[0020] By adopting the above technical solution, the steel strands behind the equipment are automatically straightened when the inlet pipe is used for threading, reducing the risk of accidents during manual straightening. At the same time, the outlet can be aligned with the hole on the flange plate to complete the threading operation. An observation port is provided on the outlet pipe, allowing construction personnel to observe the status and conveying direction of the steel strands in real time.

[0021] Preferably, the bottom of the mounting bracket is provided with multiple fixing rods, and the fixing rods are provided with fixing holes at positions away from the mounting bracket.

[0022] By adopting the above technical solution, the fixing rod increases the grounding area of ​​the mounting frame, improves the stability of the mounting frame, and prevents the mounting frame from tilting or tipping over. In addition, the fixing rod can also assist in fixing the mounting frame, preventing displacement due to vibration when the steel strands are threaded. A steel frame can be passed through the fixing holes, and then the reinforcing bars can be tied to the flange plate to fix the mounting frame. Alternatively, the fixing rod can be directly fixed to the reinforcing bars on the flange plate.

[0023] Preferably, the mounting frame is provided with a rope-winding post.

[0024] By adopting the above technical solution, steel wire rope can be wound around the rope column and fixed to other structures, thereby fixing the entire mounting frame and reducing the shaking and tilting of the mounting frame during the threading process.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The adjusting roller has multiple rolling sections with different radii, allowing adjustment of the rolling section opposite to the rolling roller. This makes it suitable for steel strands of different sizes. The adjustment process is convenient, requiring only axial pushing or pulling of the adjusting roller. Both the rolling sections and the rolling roller are equipped with rolling grooves. During the steel strand threading process, the adjusting roller is not prone to axial displacement under the action of clamping force, thus maintaining stable conveying. 2. The steel strands are guided by the inlet and outlet pipes so that they can be inserted into the flange plate more smoothly; 3. A fixing rod is provided at the bottom of the mounting frame. The fixing rod can help to fix the mounting frame and prevent the device from shaking or shifting during the threading process. Attached Figure Description

[0026] Figure 1 This is an isometric schematic diagram of the main overall structure in the embodiments of this application; Figure 2 This is a schematic diagram illustrating the structure of the adjusting roller and the pressing roller in the embodiments of this application; Figure 3 This is a cross-sectional view of the main driving structure in the embodiments of this application; Figure 4 This is a cross-sectional view that mainly illustrates the connection relationship between the transmission gear set and the driving gear in the embodiments of this application.

[0027] Reference numerals: 1. Box-type frame; 11. Mounting hole; 12. Rope winding column; 2. Compactor roller; 3. Adjusting roller; 31. Compactor section; 4. Compactor groove; 5. Drive assembly; 51. Drive shaft; 511. Drive gear; 52. Drive rod; 521. Driven gear; 522. Limiting ring; 53. Transmission gear set; 531. Fixed wheel; 532. Transmission wheel; 54. Drive motor; 541. Motor gear; 6. Inlet pipe; 7. Outlet pipe; 71. Outlet port; 72. Observation port; 8. Fixing rod; 81. Fixing hole; 9. Steel strand. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0029] This application discloses a device for threading flange steel strands.

[0030] Reference Figure 1 and 2 A device for threading steel strands in flange plates includes a mounting frame, which is a hollow box-shaped frame 1. A pressing roller 2 and an adjusting roller 3 are rotatably mounted on the outer side of the box-shaped frame 1. The pressing roller 2 and the adjusting roller 3 are driven to rotate by a drive assembly 5. The steel strand 9 passes between the pressing roller 2 and the adjusting roller 3. When the pressing roller 2 and the adjusting roller 3 rotate, the steel strand 9 is moved by the combined action of clamping force and friction, achieving the purpose of threading the steel strand 9. It should be noted that in the prior art, the two pulleys for pressing the steel strand 9 are often spaced at a fixed distance. Therefore, the existing steel strand threading device can only be used for steel strands 9 of a specific size. When the steel strand 9 is thin, insufficient pushing force is likely to occur; when the steel strand 9 is thick, the steel strand 9 may not be able to be inserted or the excessive extrusion force may cause damage. In the embodiments of this application, the adjusting roller 3 has two rolling sections 31 arranged side by side along its axial direction. The two rolling sections 31 have different radii. The adjusting roller 3 can be displaced along the axial direction to change the rolling section 31 corresponding to the rolling roller 2. Figure 2 The direction of movement of the adjusting roller 3 is indicated by arrows. Axial movement of the adjusting roller 3 changes the distance between the pressing section 31 and the pressing roller 2, allowing the entire device to be used with two sizes of steel strand 9, thus broadening its application range. In some embodiments, more pressing sections 31 can be provided on the adjusting roller 3. Pressing grooves 4 are provided on the contact surfaces of the pressing sections 31 of the adjusting roller 3 and the steel strand 9, as well as on the contact surfaces of the pressing roller 2 and the steel strand 9. The steel strand 9 is located within the pressing grooves 4. Under the pressure of the pressing roller 2 and the pressing section 31, the pressing grooves 4 act as a limit, preventing the steel strand 9 from falling off and also preventing axial movement of the adjusting roller 3 during the threading process.

[0031] Reference Figure 1Before passing through the adjusting roller 3 and the pressing roller 2, the steel strand 9 first passes through the inlet pipe 6. The inlet pipe 6 is a tubular tube with open ends, located on the outside of the box-type frame 1, to straighten the steel strand 9 before it enters the adjusting roller 3 and the pressing roller 2. After passing through the adjusting roller 3 and the pressing roller 2, the steel strand 9 passes through the outlet pipe 7. One end of the outlet pipe 7 is located on the outside of the box-type frame 1, and the radius of the other end narrows inward to form a pointed outlet 71. The outlet 71 is aligned with the through hole of the steel strand 9 on the flange plate to facilitate the entry of the steel strand 9 into the flange plate. An observation port 72 is provided on the upper side of the outlet pipe 7 for observing the state of the steel strand 9.

[0032] Reference Figure 1 The mounting frame has two fixing rods 8 at its bottom, arranged radially along the steel strand 9. Each fixing rod 8 has a fixing hole 81 at its end furthest from the mounting frame. The fixing rods 8 are L-shaped steel commonly found on construction sites. The entire device is fixed to the top of the flange plate using the fixing rods 8. The specific fixing method is as follows: Place the entire device in front of the hole in the flange plate, align the cable outlet 71 with the hole, tie a steel bar parallel to each of the two fixing rods 8, and then pass two more steel bars through the fixing holes 81 perpendicular to the fixing rods 8. The four steel bars form a grid pattern. Then, tie the four steel bars on the fixing rods 8 to the steel bars in the wet joint of the flange plate. It should be noted that the wet joint of the flange plate refers to the area between adjacent flange plates where no concrete has been poured. There are a large number of exposed high-strength steel bars at the wet joint of the flange plate. Tying the steel bars on the fixing rods 8 to the steel bars at the wet joint of the flange plate completes the fixing of the device. In some embodiments, the wet joint of the flange plate is narrow, and the fixing rod 8 can be directly placed on both sides of the wet joint of the flange plate, or the fixing rod 8 can be directly tied to the reinforcing steel at the wet joint of the flange plate. The top of the box frame 1 is provided with a rope-winding post 12, and a wire rope can be used to wrap around the rope-winding post 12 and then the two ends of the wire rope are fixed to the reinforcing steel on the flange plate, thereby fixing the box frame 1 to the flange plate by the wire rope.

[0033] Reference Figure 2 and 3The pressing roller 2 and the adjusting roller 3 are located on the outside of the box-type frame 1. The drive assembly 5 includes a drive shaft 51 and a drive rod 52. One end of the drive shaft 51 is connected to the pressing roller 2, and the other end extends into the inside of the box-type frame 1. One end of the drive rod 52 is connected to the adjusting roller 3, and the other end also extends into the inside of the box-type frame 1. The drive shaft 51 is rotatably connected to the side of the box-type frame 1. Mounting holes 11 are provided on opposite sides of the box-type frame 1. The drive rod 52 passes through the mounting holes 11, allowing the drive rod 52 to rotate around its own central axis or to move axially within the mounting holes 11. When the drive rod 52 moves within the mounting holes 11, it can drive the adjusting roller 3 to move axially. The end of the transmission rod 52 away from the adjusting roller 3 extends out of the box frame 1 from the mounting hole 11 and is provided with a limit ring 522. The limit ring 522 is fixed on the transmission rod 52 and cannot pass through the mounting hole 11. When the transmission rod 52 moves toward the adjusting roller 3, the limit ring 522 can limit the maximum distance of movement of the transmission rod 52, preventing the transmission rod 52 from falling out of the mounting hole 11 when it moves axially.

[0034] Reference Figure 2 and 3 The drive assembly 5 also includes a drive gear 511 fixed to the drive shaft 51 and a driven gear 521 fixed to the drive rod 52. The drive gear 511 is driven to rotate by a drive motor 54, which is located on the outside of the box-type frame 1, away from the adjusting roller 3. The driven gear 521 meshes with the drive gear 511, with the drive gear 511 being wider and the driven gear 521 being narrower. The drive gear 511 and the driven gear 521 have the same radius, thus ensuring that the angular velocity of the adjusting roller 3 and the pressing roller 2 is the same, thereby enabling stable feeding of the steel strand 9. The driven gear 521 is fixed to the drive rod 52, so the limiting ring 522 can limit the movement range of the driven gear 521 by limiting the movement range of the drive rod 52, preventing the driven gear 521 from disengaging from the drive gear 511 when it moves toward the position of the adjusting roller 3. Therefore, the driven gear 521 can move axially on the drive gear 511 and always maintain a meshed state with the drive gear 511.

[0035] Reference Figure 1 and 4Three adjusting rollers 3 and three pressing rollers 2 are arranged side by side on the outer side of the box-shaped frame 1. The three adjusting rollers 3 and three pressing rollers 2 simultaneously guide the steel strand 9. Three driving gears 511 and three driven gears 521 are arranged correspondingly on the inner side of the box-shaped frame 1. The three driving gears 511 are arranged side by side and connected by a transmission gear set 53. The transmission gear set 53 includes three fixed wheels 531 and two transmission wheels 532. The three fixed wheels 531 are respectively fixed on three transmission shafts 51, and the three fixed wheels 531 are located at the end away from the pressing rollers 2. The two transmission wheels 532 are rotatably arranged on the inner side of the box-shaped frame 1, located between adjacent fixed wheels 531, and simultaneously meshing with the two adjacent fixed wheels 531. The output end of the drive motor 54 is equipped with a motor gear 541, which meshes with a fixed wheel 531. The drive motor 54 drives the fixed wheel 531 to rotate. Since the three fixed wheels 531 are connected by two transmission wheels 532, they rotate synchronously. When the three fixed wheels 531 rotate, they drive the three transmission shafts 51 to rotate, which in turn drives the three drive gears 511 to rotate. Since the drive gears 511 and driven gears 521 mesh, the adjusting roller 3 and the pressing roller 2 rotate synchronously under the drive of the drive motor 54. The diameter of the fixed wheel 531 is larger than that of the drive wheel. Since the fixed wheel 531 is fixed on the transmission shaft 51, the transmission shaft 51 cannot move axially. Therefore, the fixed wheel 531 is fixed in the axial direction and is located on the side away from the pressing roller 2. When the driven gear 521 drives the transmission rod 52 to move away from the adjusting roller 3, the fixed wheel 531 can limit the maximum distance that the driven gear 521 can move.

[0036] The implementation principle of this application embodiment is as follows: The adjusting roller 3 of this application embodiment has a stepped structure and is provided with multiple rolling sections 31 of different widths along the axial direction. By moving the adjusting roller 3 axially, it can quickly switch to the rolling section 31 that matches the current width of the steel strand 9, changing the distance between the adjusting roller 3 and the rolling roller 2 to achieve adaptation to steel strands 9 of different specifications. After adjusting the position of the adjusting roller 3, the steel strand 9 first passes through the tubular inlet pipe 6, then passes through the gap between the rolling roller 2 and the adjusting roller 3, and moves forward under the squeezing and rotation of the rolling roller 2 and the adjusting roller 3. Then, guided by the outlet pipe 7, it enters the preset hole on the flange plate steel, completing the threading of the flange plate steel strand 9. In this embodiment, the transmission path of the driving torque of the drive motor 54 is as follows: the output end of the drive motor 54 drives a fixed wheel 531 to rotate through the motor gear 541. Since the three fixed wheels 531 are connected by the transmission wheel 532, the three fixed wheels 531 rotate synchronously, thereby driving the three drive gears 511 to rotate. The three drive gears 511 are all connected to the rolling roller 2 through the transmission shaft 51, thereby driving the three rolling rollers 2 to rotate. A driven gear 521 is meshed on the drive gear 511. The driven gear 521 follows the drive gear 511 to rotate, and the driven gear 521 is connected to the adjusting roller 3 through the transmission rod 52. Therefore, the three adjusting rollers 3 rotate, thereby realizing that the drive motor 54 drives the three rolling rollers 2 and the three adjusting rollers 3 to rotate simultaneously.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for threading flange steel strands, characterized in that, The device includes a mounting frame on which a pressing roller (2) and an adjusting roller (3) are rotatably mounted. The pressing roller (2) and the adjusting roller (3) are driven to rotate by a drive assembly (5). The adjusting roller (3) has multiple rolling sections (31) arranged side by side along its rotation axis, each rolling section (31) having a different radius, and the steel strand (9) passes between the rolling section (31) and the rolling roller (2); The drive assembly (5) includes a transmission rod (52) that is connected to the adjusting roller (3). The mounting frame has a mounting hole (11). The transmission rod (52) passes through the mounting hole (11). The transmission rod (52) drives the adjusting roller (3) to rotate and move axially. When the adjusting roller (3) moves axially, it changes the rolling section (31) corresponding to the rolling roller (2).

2. The flange plate steel strand threading device according to claim 1, characterized in that: The drive assembly (5) further includes a drive shaft (51) that is connected to the rolling roller (2) for transmission, and the drive shaft (51) is rotatably mounted on the mounting frame; The drive assembly (5) further includes a drive gear (511) disposed on the transmission shaft (51) and a driven gear (521) disposed on the transmission rod (52). The drive gear (511) is driven to rotate by the drive motor (54). The driven gear (521) meshes with the drive gear (511). When the driven gear (521) moves axially along the transmission rod (52), the driven gear (521) remains meshed with the drive gear (511).

3. The flange plate steel strand threading device according to claim 2, characterized in that: The mounting frame is provided with a plurality of corresponding adjusting rollers (3) and rolling rollers (2); The multiple adjusting rollers (3) and the multiple rolling rollers (2) are driven by multiple driving gears (511) and multiple driven gears (521), respectively. The multiple driving gears (511) are connected by a transmission gear set (53), which is driven by the drive motor (54).

4. The flange plate steel strand threading device according to claim 3, characterized in that: The transmission gear set (53) includes multiple fixed wheels (531) and multiple transmission wheels (532). The multiple fixed wheels (531) are respectively fixed on multiple transmission shafts (51). The transmission wheels (532) are rotatably mounted on the mounting frame. The transmission wheels (532) are located between adjacent fixed wheels (531) and simultaneously mesh with adjacent fixed wheels (531).

5. The flange plate steel strand threading device according to claim 1, characterized in that: The rolling sections (31) of the adjusting roller (3) are provided with rolling grooves (4), and the rolling grooves (4) are also provided on the contact surface between the rolling roller (2) and the steel strand (9).

6. The flange plate steel strand threading device according to claim 1, characterized in that: The mounting frame is configured as a box-type frame (1), the rolling roller (2) and the adjusting roller (3) are rotatably disposed on the side of the box-type frame (1), and the rolling roller (2) and the adjusting roller (3) are located outside the box-type frame (1), and the driving assembly (5) is disposed inside the box-type frame (1).

7. The flange plate steel strand threading device according to claim 1, characterized in that: The mounting frame is also equipped with an inlet pipe (6), and the steel strand (9) passes through the inlet pipe (6) before passing through the adjusting roller (3) and the rolling roller (2).

8. The flange plate steel strand threading device according to claim 1, characterized in that: The mounting frame is also provided with a cable outlet pipe (7). The steel strand (9) passes through the adjusting roller (3) and the rolling roller (2) and then through the cable outlet pipe (7). One end of the cable outlet pipe (7) is located on the side of the mounting frame, and the radius of the other end is reduced inward to form a cable outlet (71). An observation port (72) is provided on the cable outlet pipe (7).

9. The flange plate steel strand threading device according to claim 1, characterized in that: The bottom of the mounting frame is provided with multiple fixing rods (8), and the fixing rods (8) have fixing holes (81) at a position away from the mounting frame.

10. A flange plate steel strand threading device according to claim 1, characterized in that: The mounting frame is equipped with a rope-winding post (12).

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