Steel strand pulling device

Abstract

The invention relates to a steel strand pulling device which comprises a pulling machine and a pay-off wheel, a sliding plate is arranged below the pay-off wheel and the pulling machine, the pulling machine is fixed to the sliding plate, a top plate and a bottom plate are arranged below the sliding plate, a supporting column connected with the top plate is connected to the bottom plate, the sliding plate is slidably connected to the top plate, and a connecting spring is connected to the sliding plate. The connecting spring is connected with the top plate; the sliding plate is rotatably connected with a driving gear and a driven gear, the pay-off wheel is detachably connected with the driving gear, the sliding plate is slidably connected with a rack meshed with the driven gear, the rack is connected with a limiting spring, the limiting spring is connected with the top plate, and the side, corresponding to the rack, of the top plate is provided with scale marks; the top plate is provided with a cutting assembly for cutting the steel strand, the cutting assembly comprises a cutting machine and a driving part for driving the cutting machine to move in the vertical direction, a transmission part is further arranged between the top plate and the bottom plate, and the driving part enables the sliding plate to slide through the transmission part. The strand pulling machine has the effect that the strand pulling effect of the strand pulling machine is stable.

Description

Technical Field

[0001] The present application relates to the field of steel strand bundle threading machines, and in particular to a steel strand bundle threading device. Background Art

[0002] The bundle threading device is a device used to thread the steel strand into the prestressed channel. Usually, the bundle threading device is a bundle threading machine. During the bundle threading operation, the steel strand is wound on the pay-off wheel, and one end of the steel strand passes through the bundle threading machine. The bundle threading machine continuously pushes the steel strand into the prestressed channel, and drives the pay-off wheel to rotate when the steel strand is paid out. Since the prestressed channel is narrow and long, it is inconvenient for the operator to observe whether the paid-out steel strand is compatible with the prestressed channel. The operator relies on experience to judge when to stop the bundle threading machine, resulting in unstable bundle threading effect. Summary of the Invention

[0003] In order to stabilize the bundle threading effect of the bundle threading machine, the present application provides a steel strand bundle threading device.

[0004] The present application provides a steel strand bundle threading device using the following technical solutions: A steel strand threading device includes a threading machine and a pay-off wheel. The steel strand is wound on the pay-off wheel. A slide is provided below the pay-off wheel and the threading machine. The threading machine is fixed on the slide. A top plate and a bottom plate are provided below the slide. A pillar connected to the top plate is connected to the bottom plate. The slide is slidably connected to the top plate, and the sliding direction of the slide is perpendicular to the threading direction of the steel strand. A connecting spring is connected to the slide, and the connecting spring is connected to the top plate. The slide is rotatably connected to a driving gear and a driven gear meshing with the driving gear, the pay-off wheel is detachably connected to the driving gear, and the pay-off wheel can drive the driving gear to rotate, and the slide is slidably connected to a rack meshing with the driven gear, and the length direction and sliding direction of the rack are both arranged along the bundle threading direction of the steel strand, and a limit spring is connected to the rack, and the limit spring is connected to the top plate, and a scale line is provided on the side of the top plate corresponding to the rack; A cutting assembly for cutting the steel strands is provided on the top plate, and the cutting assembly includes a cutting machine and a driving member for driving the cutting machine to move in a vertical direction. A transmission member is also provided between the top plate and the bottom plate, and the driving member causes the slide to slide through the transmission member, thereby separating the driven gear from the rack.

[0005] By adopting the above technical solution, in the initial state, the driving part makes the cutting machine located below the steel strand, the operator controls the operation of the bundle threading machine to transport the steel strand into the prestressed channel, the steel strand moves and drives the pay-off wheel to rotate, the pay-off wheel drives the driving gear and the driven gear to rotate, the driven gear engages with the rack, thereby moving the rack; the movement of the rack causes the limit spring to deform, and when the rack moves, the operator passes through the scale line corresponding to the end face of the rack, so as to obtain the corresponding length of the released steel strand. When the length of the released steel strand reaches the predetermined length, the bundle threading machine is turned off, so that the operator can more accurately control the length of the steel strand entering the prestressed pipe, thereby making the bundle threading effect of the bundle threading machine more stable.

[0006] The control driving part works to move the cutting machine upward to cut the steel strand, and at the same time the transmission part works to make the slide drive the driven gear to move away from the rack. At this time, the limit spring recovers its deformation and pushes the rack to move and reset. When the cutting is completed, the control driving part works to move the cutting machine downward to reset, and at the same time the transmission part works to move the slide to reset. When the slide is reset, the driven gear meshes with the rack. When the driven gear and the rack fail to mesh, the operator manually adjusts to make the driven gear mesh with the rack.

[0007] Optionally, at least two T-shaped sliders are connected to the lower surface of the slide, and sliding holes corresponding to the sliders are opened on the top plate. The sliders are slidably inserted in the corresponding sliding holes, and the slider parts are in contact with the lower surface of the top plate.

[0008] By adopting the above technical solution, the sliding block cooperates with the sliding hole, so that the sliding plate and the top plate are slidably cooperated.

[0009] Optionally, a connecting block is fixedly connected to the rack, and a connecting hole adapted to the connecting block is opened on the top plate. The length direction of the connecting hole is arranged along the bundle threading direction of the steel strand. The connecting block is slidably inserted into the connecting hole, and the connecting block portion contacts the lower surface of the top plate.

[0010] By adopting the above technical solution, the connecting block cooperates with the connecting hole, so that the rack is slidably connected to the top plate.

[0011] Optionally, the rack is fixedly connected to a matching plate at one end corresponding to the forward direction of the steel strand bundle, and a measuring hydraulic cylinder is installed on the top plate. The measuring hydraulic cylinder is located on the side of the matching plate close to the forward direction of the steel strand bundle, and the axial direction of the measuring hydraulic cylinder is set along the bundle direction of the steel strand. A convex plate is connected to the telescopic rod of the measuring hydraulic cylinder, and a support plate is connected to the convex plate. The support plate contacts the side of the upper surface of the top plate marked with a scale line, and a contact sensor is embedded in the support plate. The bundle threading device also includes a controller, which is electrically connected to the measuring hydraulic cylinder, the contact sensor and the bundle threading machine.

[0012] By adopting the above technical solution, the operator determines the length of the steel strand that needs to be released according to the length of the prestressed channel, and controls the measuring hydraulic cylinder through the controller to move the support plate to the corresponding scale line. Then, the controller controls the bundle threading machine to work. As the steel strand is gradually released, the rack drives the matching plate to move toward the support plate until the matching plate contacts the support plate. At this time, the matching plate contacts the contact sensor, and the contact sensor transmits the signal to the controller. The controller controls the bundle threading machine to turn off, allowing the operator to control the bundle threading machine more conveniently.

[0013] Optionally, the driving component includes a cutting hydraulic cylinder installed on the base plate, the telescopic rod of the cutting hydraulic cylinder is connected to a horizontal plate, the horizontal plate is fixedly connected to a connecting rod, the connecting rod passes through the top plate and is slidably connected to the top plate, and the upper end of the connecting rod is fixed to the housing of the cutting machine.

[0014] By adopting the above technical solution, the operator controls the operation of the cutting hydraulic cylinder, and the telescopic rod of the cutting hydraulic cylinder is extended and retracted to drive the cross plate, the connecting rod and the cutting machine to move in the vertical direction.

[0015] Optionally, the transmission member includes a hinged rod corresponding to the slider one by one, one end of the hinged rod is hinged to the slider, the other end of the hinged rod is hinged to the cross plate, and the upper end of the hinged rod is inclined in a direction away from the rack.

[0016] By adopting the above technical solution, during the process of cutting the steel wire rope, the cross plate moves upward and drives the articulated rod to move, so that the upper end of the articulated rod rotates in the direction away from the rack, the articulated rod rotates and drives the slider and the slide plate to move in the direction away from the rack, and the movement of the slide plate causes the connecting spring to deform; during the process of the cutting machine moving downward and resetting, the cross plate moves downward and drives the articulated rod to rotate and reset, and at the same time the connecting spring recovers its deformation and drives the slide plate to move in the direction close to the rack, and when the cross plate returns to its initial position, the slide plate also returns to its initial position.

[0017] Optionally, the upper end surface of the driving gear rotating shaft is fixedly connected to a coaxial supporting plate, at least one fixed block is fixedly connected to the supporting plate, and a fixing groove adapted to the fixed block is provided on the inner wall of the pay-off wheel.

[0018] By adopting the above technical solution, the fixing block cooperates with the fixing groove to fix the supporting plate and the pay-off wheel. When the pay-off wheel rotates, the pay-off wheel can drive the supporting plate and the driving gear to rotate through the fixing block.

[0019] Optionally, a fixing assembly for fixing the steel strand is further provided on the top plate, and the fixing assembly is located on a side of the bundle threading machine away from the pay-off wheel.

[0020] By adopting the above technical solution, during the process of cutting the steel strand, the movement of the slide will drive the movement of the steel strand, and the fixing component fixes the side of the steel strand close to the prestressed channel, thereby reducing the situation where the steel strand in the prestressed channel is offset due to the movement of the slide.

[0021] Optionally, the fixing assembly includes a fixing ring and a matching ring coaxial with the fixing ring, the matching ring is located on a side of the fixing ring away from the bundle threading machine, the matching ring is conical, the end of the matching ring with a smaller diameter faces the fixing ring, the maximum outer diameter of the matching ring is larger than the inner diameter of the fixing ring, a plurality of grooves are provided on the matching ring, the plurality of grooves are arranged along the circumference of the matching ring, the plurality of grooves divide the side of the matching ring with a smaller diameter into multiple petals, and the steel strand is passed through the fixing ring and the matching ring; The fixing ring is connected to a rack rod fixed to the top plate, the fixing ring is connected to a vertical rod, the lower end of the vertical rod is connected to a sliding block, the sliding block passes through the top plate and is slidably connected to the top plate, the sliding direction of the sliding block is set along the threading direction of the steel strand, the sliding block is connected to a reset spring, the reset spring is fixed to the top plate, and the reset spring creates a gap between the matching ring and the fixing ring; The sliding block is hinged with a transmission rod at a position below the top plate, the lower end of the transmission rod is hinged with the transverse plate, and the upper end of the transmission rod is inclined toward the direction close to the fixing ring.

[0022] By adopting the above technical solution, in the initial state, there is a distance between the matching ring and the fixed ring. During the upward movement of the cutting machine and the horizontal plate, the horizontal plate drives the transmission rod to rotate, so that the upper end of the transmission rod rotates toward the fixed ring. At the same time, the transmission rod drives the sliding block, the vertical rod and the fixed ring to move, so that the fixed ring is inserted into the fixed ring, and the movement of the vertical rod causes the reset spring to deform. As the horizontal plate continues to move, the fixed ring also continues to move. During this process, the fixed ring causes the matching ring to change, and the diameter of the end with a smaller diameter of the matching ring continues to shrink. The matching ring is pressed against the steel strand, thereby achieving the purpose of fixing the steel strand. As the matching ring continues to move, the fixing effect of the matching ring on the steel strand is also better.

[0023] When the horizontal plate moves downward, the horizontal plate drives the transmission rod to rotate and reset. At the same time, the reset spring recovers its deformation and drives the sliding block, vertical rod and matching ring to move to the initial position. When the horizontal plate and the hinged rod are restored to their initial positions, the matching ring is also restored to its initial position. At this time, the matching ring has released the fixation of the steel strand.

[0024] In summary, this application includes at least one of the following beneficial technical effects: By setting the top plate, bottom plate, slide plate, pay-off wheel, bundle threading machine, driving gear, driven gear, rack, connecting spring, limit spring, cutting assembly and transmission parts, the operator can more accurately control the length of the steel strand entering the prestressed pipe, thereby making the bundle threading effect of the bundle threading machine more stable; By setting up the controller, measuring hydraulic cylinder, matching plate, convex plate, support plate and contact sensor, the operator can control the beam threading machine more conveniently; By arranging a fixing ring, a matching ring, a vertical rod, a sliding block, a return spring and a transmission rod, the steel strand can be fixed, thereby reducing the situation where the steel strand in the prestressed pipe is offset due to the movement of the slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the steel strand bundle threading device according to an embodiment of the present application.

[0026] Figure 2 This is a cross-sectional view of an embodiment of the present application showing the connection relationship between the slide plate and the top plate.

[0027] Figure 3 It is a cross-sectional view of the structure of the measurement component according to an embodiment of the present application.

[0028] Figure 4 It is reflected Figure 3 A magnified view of the structure in the middle.

[0029] Figure 5 It is a cross-sectional view showing the connection relationship between the rack and the top plate according to an embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of a partial structure of a measurement component according to an embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of a partial structure of a cutting component according to an embodiment of the present application.

[0032] Figure 8 It is a schematic diagram showing the positional relationship between the fixing ring and the mating ring according to an embodiment of the present application.

[0033] Figure 9 It is a schematic diagram of a matching ring structure according to an embodiment of the present application.

[0034] Figure 10 It is a cross-sectional view showing the connection relationship between the vertical rod and the top plate in an embodiment of the present application.

[0035] Explanation of reference numerals: 1. bottom plate; 11. support; 2. top plate; 21. sliding hole; 22. connecting hole; 23. sliding hole; 3. slide plate; 31. slider; 32. connecting spring; 4. measuring assembly; 41. driving gear; 42. driven gear; 43. rack; 431. connecting block; 432. limit spring; 433. mating plate; 44. measuring hydraulic cylinder; 45. convex plate; 46. support plate; 47. contact sensor ;48. Controller;49. Articulated rod;5. Support plate;51. Fixed block;6. Pay-off wheel;61. Fixed groove;7. Threading machine;8. Cutting assembly;81. Cutting machine;82. Driving part;821. Connecting rod;822. Cross plate;823. Cutting hydraulic cylinder;9. Fixed assembly;91. Fixed ring;92. Matching ring;93. Frame rod;94. Vertical rod;95. Sliding block;96. Return spring;97. Transmission rod. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-10 This application is described in further detail.

[0037] The present application discloses a steel strand bundle threading device. Figure 1 and Figure 2 , including a bottom plate 1, a top plate 2 and a slide plate 3 arranged in sequence from bottom to top, the length directions of the bottom plate 1 and the top plate 2 are set along the bundle threading direction of the steel strand, and the four end corners of the upper surface of the bottom plate 1 are fixedly connected with pillars 11, the upper ends of the pillars 11 are fixed to the lower surface of the top plate 2, and the slide plate 3 is slidably connected to the top plate 2, and the sliding direction of the slide plate 3 is set along the width direction of the top plate 2; a bundle threading machine 7 and a pay-off wheel 6 are installed on the slide plate 3, the steel strand is wound on the pay-off wheel 6, and one end of the steel strand is passed through the bundle threading machine 7. In this embodiment, the forward direction of the steel strand threading is defined as the front, and the bundle threading machine 7 is located in front of the pay-off wheel 6.

[0038] Reference Figure 1 and Figure 2 Two T-shaped sliders 31 are fixedly connected to the lower surface of the slide plate 3. A sliding hole 21 adapted to the slider 31 is opened on the top plate 2. The length direction of the sliding hole 21 is arranged along the width direction of the top plate 2. The slider 31 is inserted into the sliding hole 21, and the slider 31 is partially in contact with the lower surface of the top plate 2. The slider 31 cooperates with the sliding hole 21 to make the slide plate 3 and the top plate 2 slide together; a connecting spring 32 is fixedly connected to the hole wall at one end of the sliding hole 21, and the connecting spring 32 is fixed to the side wall corresponding to the slider 31.

[0039] Reference Figure 2 and Figure 3 , a measuring assembly 4 for measuring the length of the released steel strand is provided on the top plate 2, and the measuring assembly 4 includes a driving gear 41 and a driven gear 42 rotatably connected to the slide plate 3, and the diameter of the driven gear 42 is larger than the diameter of the driving gear 41; Figure 3 and Figure 4 The upper end surface of the rotating shaft of the driving gear 41 is fixedly connected to a coaxial supporting plate 5, and at least one fixed block 51 is fixedly connected to the supporting plate 5. In this embodiment, the number of fixed blocks 51 is two, and a fixing groove 61 adapted to the fixed block 51 is opened on the inner wall of the pay-off wheel 6; the fixing block 51 cooperates with the fixing groove 61 to make the pay-off wheel 6 and the supporting plate 5 detachable, and the rotation of the pay-off wheel 6 can drive the driving gear 41 to rotate.

[0040] Reference Figure 2 and Figure 5 The top plate 2 is slidably connected to a rack 43 located on one side of the slide plate 3, and the rack 43 is meshed with the driven gear 42. The length direction and sliding direction of the rack 43 are both set along the bundle threading direction of the steel strand; the lower surface of the rack 43 is fixedly connected to a T-shaped connecting block 431, and a connecting hole 22 for the connecting block 431 to be slidably inserted is provided on the top plate 2. The length direction of the connecting hole 22 is set along the length direction of the top plate 2, and the connecting block 431 is slidably inserted in the connecting hole 22, and part of the connecting block 431 contacts the lower surface of the top plate 2; a limiting spring 432 is connected to the connecting block 431, and the end of the limiting spring 432 away from the connecting block 431 is fixed to the hole wall corresponding to the end of the connecting hole 22, and the limiting spring 432 causes the rack 43 to be located on the side of the top plate 2 close to the pay-off wheel 6.

[0041] Reference Figure 5 and Figure 6 , a scale line is provided on one side of the upper surface of the top plate 2 close to the rack 43, and the scale line is arranged along the length direction of the top plate 2. The front end of the rack 43 is fixedly connected to a matching plate 433. A measuring hydraulic cylinder 44 is installed on the side wall of the top plate 2 close to the rack 43. The axial direction of the measuring hydraulic cylinder 44 is arranged along the length direction of the top plate 2, and the telescopic rod of the measuring hydraulic cylinder 44 faces the rack 43; a convex plate 45 is fixedly connected to the end of the telescopic rod of the measuring hydraulic cylinder 44, and a support plate 46 is fixedly connected to the convex plate 45, and the support plate 46 is in contact with the side of the upper surface of the top plate 2 where the scale line is provided.

[0042] Reference Figure 2 and Figure 6 A contact sensor 47 is embedded on the side wall of the support plate 46 close to the rack 43. The contact sensor 47 does not protrude from the support plate 46. The contact between the mating plate 433 and the contact sensor 47 will trigger the contact sensor 47. A controller 48 is installed on the base plate 1. The controller 48 is electrically connected to the measuring hydraulic cylinder 44, the contact sensor 47 and the bundle threading machine 7.

[0043] In the initial state, the connecting spring 32 limits the slide plate 3, so that the rack 43 remains engaged with the driven gear 42, and the limiting spring 432 limits the rack 43, so that the matching plate 433 is aligned with the initial scale of the scale line. The controller 48 controls the measurement hydraulic cylinder 44 to work, so that the support plate 46 moves to the appropriate scale. This scale is determined according to the length of the prestressed channel, and this scale corresponds to the length of the steel strand that needs to be released; then the controller 48 controls the bundle threading machine 7 to work and transport the steel strand into the prestressed channel.

[0044] During the process of conveying the steel strand by the bundle threading machine 7, the steel strand moves and pulls the pay-off wheel 6 to rotate. The pay-off wheel 6 drives the driving gear 41 and the driven gear 42 to rotate through the fixed block 51 and the support plate 5. The rotation of the driven gear 42 drives the rack 43, the connecting block 431 and the matching plate 433 to move. The movement of the connecting block 431 causes the limit spring 432 to deform; as the length of the steel strand entering the prestressed channel gradually increases, the distance between the matching plate 433 and the support plate 46 also gradually decreases.

[0045] When the mating plate 433 contacts the support plate 46, the mating plate 433 also contacts the contact sensor 47, triggering the sensor to transmit the signal to the controller 48, and the controller 48 controls the bundle threading machine 7 to stop working; at this time, the steel strand is released to the predetermined length, and the operator can more accurately control the length of the steel strand entering the prestressed channel, making the bundle threading effect of the bundle threading machine 7 more stable.

[0046] Reference Figure 1 and Figure 7 When the bundle threading machine 7 stops working, it is necessary to cut the steel strand. A cutting assembly 8 for cutting the steel strand is also provided on the top plate 2, and the cutting assembly 8 is arranged on one side of the slide 3; the cutting assembly 8 includes a cutting machine 81 and a driving member 82 that drives the cutting machine 81 to move in the vertical direction. The driving member 82 includes a connecting rod 821 fixedly connected to the bottom of the shell of the cutting machine 81, and the connecting rod 821 passes through the top plate 2 and is slidably plugged with the top plate 2. The lower end of the connecting rod 821 is fixedly connected to a cross plate 822, and the cross plate 822 is located between the top plate 2 and the bottom plate 1. A cutting hydraulic cylinder 823 is provided below the cross plate 822, and the axial direction of the cutting hydraulic cylinder 823 is arranged along the vertical direction. In this embodiment, the number of cutting hydraulic cylinders 823 is two, and the two cutting hydraulic cylinders 823 are distributed on both sides of the cross plate 822. The telescopic end of the cutting hydraulic cylinder 823 is fixed to the cross plate 822.

[0047] The cutting hydraulic cylinder 823 is also electrically connected to the controller 48. The operation of the cutting hydraulic cylinder 823 can drive the connecting rod 821 and the cutting machine 81 to work; Figure 1 and Figure 2The measuring assembly 4 also includes a transmission part. When the cutting assembly 8 is working, the cutting assembly 8 drives the transmission part to work, and the transmission part works to move the rack 43 to reset, preparing for the next bundle threading work; the transmission part includes a hinged rod 49 corresponding to the slider 31 one by one, the hinged rod 49 is hinged on the cross plate 822, and the end of the hinged rod 49 away from the cross plate 822 is hinged to the corresponding slider 31, and the upper end of the hinged rod 49 is inclined in the direction away from the rack 43.

[0048] In the initial state, the connecting spring 32 makes the slide plate 3 be in the initial position, the driven gear 42 is engaged with the rack 43, and the cutting hydraulic cylinder 823 makes the cutter 81 be located below the steel strand, reducing the situation where the cutter 81 interferes with the movement of the steel strand; when the bundle threading machine 7 stops working, the controller 48 controls the telescopic rod of the cutting hydraulic cylinder 823 to extend, thereby pushing the cross plate 822, the connecting rod 821 and the cutter 81 to move upward, and the controller 48 controls the cutting machine 81 to work, so that the cutting machine 81 cuts the steel strand until the steel strand is cut off.

[0049] During the upward movement of the cross plate 822, the cross plate 822 drives the lower end of the hinged rod 49 to move upward, thereby rotating the hinged rod 49, and the upper end of the hinged rod 49 moves further away from the rack 43; when the hinged rod 49 moves, it drives the slider 31, the slide plate 3 and the driven gear 42 to move, and when the slide plate 3 moves, the connecting spring 32 is deformed, and the driven gear 42 moves to separate the driven gear 42 from the rack 43. When the driven gear 42 is separated from the rack 43, the connecting spring 32 recovers its deformation and pushes the rack 43 to move and reset.

[0050] When the cutting is completed, the controller 48 controls the cutting machine 81 to stop working and controls the telescopic rod of the cutting hydraulic cylinder 823 to retract, thereby driving the cross plate 822, the connecting rod 821 and the cutting machine 81 to move downward until the cutting machine 81 moves to the initial position; in the process of the cross plate 822 moving downward, the cross plate 822 drives the articulated rod 49 to rotate and reset, and at the same time the connecting spring 32 restores its deformation and pushes the slide plate 3 to move in the direction close to the rack 43 until the slide plate 3 moves to the initial position, and the driven gear 42 resumes engagement with the rack 43; when there is a situation where the driven gear 42 cannot engage with the rack 43, the operator needs to manually adjust it to make the driven gear 42 engage with the rack 43.

[0051] Reference Figure 1 、 Figure 7 and Figure 8When cutting the steel strands, the movement of the slide 3 drives the bundle threading machine 7 and the steel strands as a whole to move, which may cause the steel strands in the prestressed channel to deviate. In order to improve the above problem, a fixing component 9 for fixing the steel strands is also provided on the top plate 2. The fixing component 9 is arranged on the side of the cutting machine 81 away from the slide 3; the fixing component 9 includes a coaxial fixing ring 91 and a matching ring 92. The matching ring 92 is located on the side of the fixing ring 91 away from the cutting machine 81, and the matching ring 92 is conical, and the end of the matching ring 92 with a smaller diameter faces the fixing ring 91.

[0052] Reference Figure 8 and Figure 9 , a plurality of grooves are provided on the mating ring 92, and the plurality of grooves are distributed along the circumference of the mating ring 92. In this embodiment, there are three grooves, and the three grooves divide the side of the mating ring 92 close to the fixed ring 91 into three petals; the minimum diameter of the mating ring 92 is smaller than the inner diameter of the fixed ring 91, and the maximum diameter of the fixed ring 91 is larger than the inner diameter of the fixed ring 91, and the inner diameter of the fixed ring 91 and the minimum inner diameter of the mating ring 92 are both larger than the diameter of the steel strand, and the steel strand is passed through the fixed ring 91 and the mating ring 92.

[0053] Reference Figure 8 and Figure 10 A frame rod 93 is fixedly connected to the top plate 2, and the frame rod 93 is fixed to the fixed ring 91, thereby supporting the fixed ring 91; a vertical rod 94 is fixedly connected to the matching ring 92, and a T-shaped sliding block 95 is fixedly connected to the lower end of the vertical rod 94; a sliding hole 23 adapted to the sliding block 95 is opened on the top plate 2, and the length direction of the sliding hole 23 is set along the length direction of the top plate 2, and the sliding block 95 is slidably inserted in the sliding hole 23, and part of the sliding block 95 contacts the lower surface of the top plate 2, and the sliding block 95 cooperates with the sliding hole 23 to make the connecting rod 821 slidably connected to the top plate 2.

[0054] A return spring 96 is fixedly connected to the hole wall at one end of the sliding hole 23, and the return spring 96 is fixed to the sliding block 95. The return spring 96 limits the connecting block 431 so that there is a certain distance between the matching ring 92 and the fixed ring 91; the fixing assembly 9 also includes a transmission rod 97 hinged on the cross plate 822, and the upper end of the transmission rod 97 is hinged to the lower surface of the sliding block 95. The upper end of the transmission rod 97 is inclined toward the direction close to the fixed ring 91, and the axial direction of the rotation axis of the transmission rod 97 is perpendicular to the axial direction of the rotation axis of the hinged rod 49.

[0055] In the initial state, when cutting the steel strand, the horizontal plate 822 moves upward and drives the transmission rod 97 to rotate, so that the upper end of the transmission rod 97 rotates in the direction close to the fixed ring 91, and at the same time the transmission rod 97 drives the sliding block 95, the vertical rod 94 and the matching ring 92 to move into the fixed ring 91, and at the same time the sliding block 95 deforms the return spring 96; the outer wall of the matching ring 92 contacts the fixed ring 91, and as the matching ring 92 continues to move, the fixed ring 91 pushes the side of the matching ring 92 with a smaller diameter to deform, so that the diameter of the end of the matching ring 92 with a smaller diameter continues to shrink, so that the matching ring 92 is pressed against the steel strand, thereby fixing the steel strand; as the horizontal plate 822 continues to move, the fixing effect of the matching ring 92 on the steel strand is also better.

[0056] When the slide 3 drives the pay-off wheel 6 and the bundle threading machine 7 to move, the fixed ring 91 and the matching ring 92 fix the steel strand, which reduces the occurrence of steel strand deviation in the prestressed channel, making the bundle threading effect of the bundle threading machine 7 better; after the cutting is completed, the horizontal plate 822 moves downward, and the horizontal plate 822 drives the transmission rod 97 to rotate and reset, and the reset spring 96 restores the deformation and drives the sliding block 95, the vertical rod 94 and the matching ring 92 to move, so that the matching ring 92 is separated from the fixed ring 91 and the fixation of the steel strand is released.

[0057] The implementation principle of a steel strand bundle threading device in an embodiment of the present application is as follows: the operator controls the movement of the measuring hydraulic cylinder 44 through the controller 48 to align the support plate 46 with the corresponding scale, and then the controller 48 controls the bundle threading machine 7 to work and transport the steel strands into the prestressed pipe; the steel strands are paid out and drive the pay-off wheel 6, the driving gear 41 and the driven gear 42 to rotate, and the driven gear 42 drives the rack 43 to move until the rack 43 contacts the contact sensor 47. At this time, the controller 48 controls the bundle threading machine 7 to stop working, and controls the cutting hydraulic cylinder 823 to move upward, and also controls the cutting machine 81 to work, so that the cross plate 822 and the cutting machine 81 move upward.

[0058] During the upward movement of the cross plate 822, the cross plate 822 drives the articulated rod 49 and the transmission rod 97 to rotate. The rotation of the articulated rod 49 causes the slide plate 3 to move. The movement of the slide plate 3 causes the driven gear 42 to separate from the rack 43, and the limit spring 432 works to reset the rack 43; the transmission rod 97 rotates to cause the matching ring 92 to move toward the fixed ring 91, thereby fixing the steel strand; when the cutting is completed, the controller 48 controls the cutting machine 81 to close, and controls the cutting hydraulic cylinder 823 to work, so that the cross plate 822 moves downward and resets, and at the same time the connecting spring 32 and the reset spring 96 restore the deformation, so that the slide plate 3 and the matching ring 92 move and reset.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel strand threading device, comprising a threading machine (7) and a pay-off wheel (6), wherein the pay-off wheel (6) is wound with a steel strand, and is characterized in that: A slide plate (3) is provided below the pay-off wheel (6) and the bundle threading machine (7), the bundle threading machine (7) is fixed on the slide plate (3), a top plate (2) and a bottom plate (1) are provided below the slide plate (3), a support (11) connected to the top plate (2) is connected to the bottom plate (1), the slide plate (3) is slidably connected to the top plate (2), and the sliding direction of the slide plate (3) is perpendicular to the bundle threading direction of the steel strands, a connecting spring (32) is connected to the slide plate (3), and the connecting spring (32) is connected to the top plate (2); The slide plate (3) is rotatably connected to a driving gear (41) and a driven gear (42) meshing with the driving gear (41); the pay-off wheel (6) is detachably connected to the driving gear (41); the pay-off wheel (6) can drive the driving gear (41) to rotate; the slide plate (3) is slidably connected to a rack (43) meshing with the driven gear (42); the length direction and the sliding direction of the rack (43) are both arranged along the bundle threading direction of the steel strand; the rack (43) is connected to a limit spring (432); the limit spring (432) is connected to the top plate (2); and a scale line is provided on one side of the top plate (2) corresponding to the rack (43); A cutting assembly (8) for cutting the steel strands is provided on the top plate (2), and the cutting assembly (8) includes a cutting machine (81) and a driving member (82) for driving the cutting machine (81) to move in a vertical direction. A transmission member is also provided between the top plate (2) and the bottom plate (1), and the driving member (82) causes the slide plate (3) to slide through the transmission member, thereby separating the driven gear (42) from the rack (43).

2. A steel strand bundle threading device according to claim 1, characterized in that: At least two T-shaped sliders (31) are connected to the lower surface of the slide plate (3); sliding holes (21) corresponding to the sliders (31) are opened on the top plate (2); the sliders (31) are slidably inserted into the corresponding sliding holes (21), and the sliders (31) are partially in contact with the lower surface of the top plate (2).

3. The steel strand bundle threading device according to claim 1, characterized in that: A connecting block (431) is fixedly connected to the rack (43), and a connecting hole (22) adapted to the connecting block (431) is provided on the top plate (2). The length direction of the connecting hole (22) is arranged along the bundle threading direction of the steel strands. The connecting block (431) is slidably inserted into the connecting hole (22), and a portion of the connecting block (431) contacts the lower surface of the top plate (2).

4. A steel strand bundle threading device according to any one of claims 1 to 3, characterized in that: The end of the rack (43) corresponding to the steel strand bundle forward direction is fixedly connected to a matching plate (433), and a measuring hydraulic cylinder (44) is installed on the top plate (2). The measuring hydraulic cylinder (44) is located on the side of the matching plate (433) close to the steel strand bundle forward direction. The axial direction of the measuring hydraulic cylinder (44) is set along the steel strand bundle direction. A convex plate (45) is connected to the telescopic rod of the measuring hydraulic cylinder (44), and a support plate (46) is connected to the convex plate (45). The support plate (46) contacts the side of the upper surface of the top plate (2) marked with a scale line. A contact sensor (47) is embedded on the support plate (46). The bundle threading device also includes a controller (48). The controller (48) is electrically connected to the measuring hydraulic cylinder (44), the contact sensor (47) and the bundle threading machine (7).

5. The steel strand bundle threading device according to any one of claims 1 to 3, characterized in that: The driving member (82) includes a cutting hydraulic cylinder (823) mounted on the bottom plate (1), a telescopic rod of the cutting hydraulic cylinder (823) is connected to a transverse plate (822), a connecting rod (821) is fixedly connected to the transverse plate (822), the connecting rod (821) passes through the top plate (2) and is slidably connected to the top plate (2), and the upper end of the connecting rod (821) is fixed to the housing of the cutting machine (81).

6. The steel strand bundle threading device according to claim 5, characterized in that: The transmission member includes a hinged rod (49) corresponding to the slider (31) one by one, one end of the hinged rod (49) is hinged to the slider (31), the other end of the hinged rod (49) is hinged to the cross plate (822), and the upper end of the hinged rod (49) is inclined in a direction away from the rack (43).

7. The steel strand bundle threading device according to claim 1, characterized in that: The upper end surface of the rotating shaft of the driving gear (41) is fixedly connected to a coaxial supporting plate (5), and at least one fixed block (51) is fixedly connected to the supporting plate (5). A fixing groove (61) adapted to the fixed block (51) is provided on the inner wall of the pay-off wheel (6).

8. The steel strand bundle threading device according to claim 1, characterized in that: The top plate (2) is also provided with a fixing assembly (9) for fixing the steel strands, and the fixing assembly (9) is located on a side of the bundle threading machine (7) away from the pay-off wheel (6).

9. The steel strand bundle threading device according to claim 8, characterized in that: The fixing assembly (9) includes a fixing ring (91) and a matching ring (92) coaxial with the fixing ring (91), the matching ring (92) is located on a side of the fixing ring (91) away from the bundle threading machine (7), the matching ring (92) is conical, the end of the matching ring (92) with a smaller diameter faces the fixing ring (91), the maximum outer diameter of the matching ring (92) is larger than the inner diameter of the fixing ring (91), a plurality of grooves are provided on the matching ring (92), the plurality of grooves are arranged along the circumference of the matching ring (92), and the plurality of grooves divide the side of the matching ring (92) with a smaller diameter into multiple petals, and the steel strands are passed through the fixing ring (91) and the matching ring (92); The fixing ring (91) is connected to a frame rod (93) fixed to the top plate (2), the fixing ring (91) is connected to a vertical rod (94), the lower end of the vertical rod (94) is connected to a sliding block (95), the sliding block (95) passes through the top plate (2) and is slidably connected to the top plate (2), the sliding direction of the sliding block (95) is set along the threading direction of the steel strand, the sliding block (95) is connected to a return spring (96), the return spring (96) is fixed to the top plate (2), and the return spring (96) creates a gap between the matching ring (92) and the fixing ring (91); The sliding block (95) is hingedly connected to a transmission rod (97) at a position below the top plate (2). The lower end of the transmission rod (97) is hingedly connected to the transverse plate (822), and the upper end of the transmission rod (97) is inclined toward the direction close to the fixed ring (91).

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