Prestressed duct rubber rod pulling trolley

Abstract

This application discloses a prestressed duct rubber rod extraction trolley, belonging to the field of construction engineering. It includes a main body with a mounting base on it. A traction rope for connecting to the mounting base is also provided on the main body. A connecting screw is slidably disposed within the mounting base, and a first sliding groove is formed within the mounting base for sliding engagement with the connecting screw. The radius of the connecting screw gradually decreases along its length at the end furthest from the traction rope. Several grippers are hinged to the mounting base, and anti-slip pads are provided on the grippers to restrict the movement of the mounting base. A first drive assembly for controlling the movement of the connecting screw is provided on the mounting base, as well as a control assembly for controlling the movement of the grippers. A second drive assembly for controlling the movement of the traction rope is provided on the main body. This application has the effect of extracting a broken rubber rod from the duct.

Description

Technical Field

[0001] This application relates to the field of building engineering, and in particular to a prestressed duct rubber rod extraction trolley. Background Technology

[0002] Prestressed ducts are holes machined into concrete members to hold prestressed steel strands, and are important components for prestressed concrete strengthening. The placement of prestressed ducts is crucial in concrete prestressed strengthening design, as different placement methods directly affect the structural safety and construction quality. Methods for placing prestressed ducts include the steel pipe core-pulling method, the rubber hose core-pulling method, and the pre-embedded corrugated pipe method.

[0003] After the operator uses the tubing core-pulling method to make a hole, the rubber rod needs to be pulled out of the reserved hole. Due to the large force between the hole and the rubber rod, the rubber rod may break inside the hole. Summary of the Invention

[0004] In order to extract the broken rubber rod from the duct, this application provides a prestressed duct rubber rod extraction trolley.

[0005] The prestressed duct rubber rod extraction trolley provided in this application adopts the following technical solution: A prestressed duct rubber rod extraction trolley includes a main body, a mounting base on the main body, a traction rope for connecting to the mounting base, a connecting screw slidably disposed within the mounting base, a first sliding groove within the mounting base for sliding engagement with the connecting screw, the radius of the connecting screw gradually decreasing along its length at the end furthest from the traction rope, several grippers hinged to the mounting base, anti-slip pads on the grippers for limiting the movement of the mounting base, a first drive assembly for controlling the movement of the connecting screw on the mounting base, a control assembly for controlling the movement of the grippers on the mounting base, and a second drive assembly for controlling the movement of the traction rope on the main body.

[0006] By adopting the above technical solution, the operator moves the main body to the vicinity of the rubber rod to be removed. The second drive component controls the movement of the traction rope, causing the mounting seat, grippers, and connecting screw to move into the channel. When the connecting screw moves to the top of the broken rubber rod, the control component controls the grippers to move towards the inner wall of the channel. When the anti-slip pad on the grippers is in contact with the inner wall of the channel, the mounting seat is restricted within the channel. Then, the first drive component drives the connecting screw to move and rotate simultaneously. The connecting screw penetrates the rubber rod under the action of the surface thread. Then, the control component drives the grippers back to the initial position, causing the anti-slip pad to move away from the inner wall of the channel. The second drive component drives the traction rope to move, causing the connecting screw to pull the broken rubber rod out. By setting up the connecting screw and the control component, the control component controls the movement of the grippers to restrict the movement of the mounting seat, providing a fulcrum for the movement of the connecting screw. The connecting screw penetrates into the broken rubber rod, and the broken rubber rod is removed under the action of the traction rope.

[0007] Preferably, the first drive assembly includes a support plate disposed within the mounting base. The support plate is fixedly connected to the inner sidewall of the first slide groove. The connecting screw passes through the support plate and is threadedly engaged with it. The end of the connecting screw away from the traction rope protrudes from the mounting base. The mounting base is provided with a third drive assembly for driving the connecting screw to rotate.

[0008] By adopting the above technical solution, after the anti-slip pad on the gripper is in contact with the inner wall of the channel, the mounting seat is restricted from moving. The third drive component drives the connecting screw to rotate. With the threaded engagement between the connecting screw and the support plate, the connecting screw moves towards the rubber rod while rotating. After the connecting screw penetrates into the rubber rod to a certain depth, the connecting screw stops moving.

[0009] Preferably, the third drive assembly includes a telescopic rod, which is fixedly connected to the end of the connecting screw away from the gripper. The telescopic rod is rotatably connected to the inner sidewall of the first slide groove. A first motor is provided on the mounting base. A first spur gear is fixedly sleeved on the output end of the first motor. A second spur gear is fixedly sleeved on the end of the telescopic rod away from the connecting screw. The first spur gear and the second spur gear mesh with each other.

[0010] By adopting the above technical solution, the first motor starts, drives the first spur gear to rotate, the rotation of the first spur gear causes the second spur gear to rotate, the rotation of the second spur gear causes the telescopic rod to rotate, the rotation of the telescopic rod causes the connecting screw to rotate, and the connecting screw moves towards the rubber rod while rotating, and the telescopic rod extends at the same time.

[0011] Preferably, the control assembly includes a connecting rod and a control screw. The connecting rod is slidably mounted on the mounting base. The mounting base has a second groove for sliding cooperation with the connecting rod. The end of the connecting rod located outside the mounting base is hinged to the gripper. The control screw is rotatably connected to the inner wall of the second groove. The control screw passes into the connecting rod and is threaded into it. The mounting base is provided with a fourth drive assembly for driving the control screw to rotate.

[0012] By adopting the above technical solution, when it is necessary to control the operation of the gripper, the fourth drive component drives the control screw to rotate. The rotation of the control screw causes the connecting rod to move in the second slide groove. The movement of the connecting rod causes one end of the gripper to move. After the one end of the gripper moves, it rotates around the hinge point. By adjusting the rotation direction of the control screw, the gripping and releasing of the gripper can be controlled.

[0013] Preferably, the fourth drive assembly includes a third spur gear and a first gear ring. The third spur gear is fixedly sleeved on the control lead screw, and the first gear ring is rotatably mounted in the mounting base. The first gear meshes with the third spur gear. A second gear ring is fixedly connected to the side wall of the first gear ring away from the third spur gear. A second motor is provided in the mounting base, and a fourth spur gear is fixedly sleeved on the output end of the second motor. The fourth spur gear meshes with the second gear ring.

[0014] By adopting the above technical solution, the second motor starts, drives the fourth spur gear to rotate, the rotation of the fourth spur gear causes the second gear ring to rotate, the rotation of the second gear ring causes the first gear ring to rotate, the rotation of the first gear ring causes the third spur gear to rotate, the rotation of the third spur gear causes the control screw to rotate, the rotation of the control screw causes the connecting rod to move, thereby controlling the operation of the gripper.

[0015] Preferably, the second drive component includes a third motor, a first support frame is provided on the main body, the third motor is disposed on the first support frame, a winding wheel is fixedly sleeved on the output end of the third motor, and the end of the traction rope away from the mounting base is wound around the winding wheel.

[0016] By adopting the above technical solution, when the mounting base moves into the channel, or when it is necessary to remove the rubber rod from the channel, the third motor is started. The third motor drives the winding wheel to rotate, and the rotation of the winding wheel causes the traction rope to control the movement of the mounting base.

[0017] Preferably, the main body is provided with a plurality of clamping wheels for driving the rubber rod to move. A slide block is slidably disposed on the main body. A third slide groove is provided on the main body for sliding cooperation with the slide block. A first return spring is fixedly connected to the slide block. The end of the first return spring away from the slide block slides and cooperates with the inner sidewall of the third slide groove. A support shaft is rotatably mounted on the slide block. The clamping wheels are fixedly sleeved on the support shaft. The support shaft passes through the slide block. A sprocket is fixedly sleeved on the support shaft. A transmission chain is wound around the sprocket and the adjacent sprocket. A fourth motor is slidably disposed inside the main body. The output end of the fourth motor is fixedly connected to the support shaft. A fourth slide groove is provided inside the main body for sliding cooperation with the fourth motor. An adjustment component is provided on the main body for adjusting the distance between the clamping wheels and the corresponding clamping wheels.

[0018] By adopting the above technical solution, the traction rope controls the movement of the mounting base, causing the rubber rod to move into a set of clamping wheels in the vertical direction. The adjustment component controls the distance between the clamping wheel and its corresponding clamping wheel, ensuring that the clamping wheel and the rubber rod are in close contact, preventing the rubber rod from detaching when the clamping wheel rotates. The fourth motor starts, driving the support shaft to rotate. The rotation of the support shaft causes its corresponding clamping wheel to rotate, which in turn causes the sprocket on it to rotate. The rotation of the sprocket causes the chain to run. Multiple clamping wheels in a set rotate simultaneously in the same direction. The first return spring can push the slide to move, maintaining the close contact between the clamping wheel and the rubber rod at all times.

[0019] Preferably, the adjustment assembly includes a linkage shaft, with a support seat sleeved at the end of the linkage shaft. The linkage shaft is rotatably connected to the support seat, and the support seat is slidably disposed between the clamping wheel and the corresponding clamping wheel. A fifth sliding groove is provided in the main body for sliding engagement of the support seat. A second return spring is fixedly connected to the support seat, and the end of the second return spring away from the support seat is fixedly connected to the inner sidewall of the fifth sliding groove. A first pulley is fixedly sleeved on the support shaft, and a first pulley is also fixedly sleeved on the support shaft corresponding to the clamping wheel. A plurality of second pulleys are fixedly sleeved on the linkage shaft, and a transmission belt is wound around the first pulley and the corresponding second pulley.

[0020] By adopting the above technical solution, the rubber rod moves to the position of the clamping wheel, and the clamping wheel rotates. When the distance between the clamping wheel and the corresponding clamping wheel is less than the radius of the rubber rod, the rubber rod pushes the clamping wheel to move. The movement of the clamping wheel causes the slide to move. The slide moves in the third slide groove and compresses the first return spring. Since the length of the transmission belt is fixed, the support shaft moves at the same time as the slide moves. The movement of the support shaft causes the first pulley to move. The movement of the first pulley causes the second pulley to move. The movement of the second pulley causes the linkage shaft and the support seat to move. At the same time, under the action of the second return spring, when the rubber rod disengages from the clamping wheel, the linkage shaft and the clamping wheel return to their initial positions. The linkage shaft is used to control the rotation direction of the clamping wheel and the corresponding clamping wheel. After the rubber rod moves between the clamping wheel and the corresponding clamping wheel, the rotation of the clamping wheel can drive the rubber rod to move. When the fourth motor drives the support shaft to rotate, the rotation of the support shaft causes the first pulley to rotate, the rotation of the first pulley causes the second pulley to rotate, the rotation of the second pulley causes the linkage shaft to rotate, and the rotation of the linkage shaft causes another second pulley on the linkage shaft to rotate. After the other second pulley rotates, the corresponding support shaft rotates, so that the corresponding clamping wheel rotates in the opposite direction to the clamping wheel. Even when the radius of the rubber rod changes, the clamping wheel can still be in close contact with the rubber rod.

[0021] Preferably, the main body is provided with a traction rod for assisting the movement of the rubber rod, a second support frame is rotatably mounted on the main body, a fifth motor is provided on the main body, the output end of the fifth motor is fixedly connected to the second support frame, a push cylinder is fixedly connected to the second support frame, a support rod is fixedly connected to the output end of the push cylinder, the traction rod slides through the support rod, a sixth sliding groove is opened in the support rod for sliding cooperation with the traction rod, a third return spring is fixedly connected to the support rod, the end of the third return spring away from the support rod is fixedly connected to the inner sidewall of the sixth sliding groove, a first auxiliary plate for assisting the rubber rod to push the traction rod to move is fixedly connected to the end of the traction rod away from the support rod, a clamping cylinder is provided on the first auxiliary plate, and a clamping plate is fixedly connected to the output end of the clamping cylinder.

[0022] By adopting the above technical solution, after the connecting screw on the mounting base moves the rubber rod to the designated position, the first motor drives the connecting screw to rotate in the opposite direction, causing the connecting screw to disengage from the rubber rod. At the same time, the second motor drives the gripper to clamp the rubber rod, and then pushes the cylinder to start. The cylinder pushes the support rod and the traction rod to move towards the position of the rubber rod. After the first auxiliary plate contacts the rubber rod, the support rod continues to move. At this time, the rubber rod pushes the first auxiliary plate to move. The movement of the first auxiliary plate causes the traction rod to retract into the sixth slide groove and compress the third return spring. After the rubber rod passes through the position of the traction rod, the traction rod returns to the initial position under the action of the third return spring. At this time, the rubber rod is confined within the traction rod and the support rod. The clamping cylinder starts and pushes the clamping plate to fix the rubber rod. At the same time, the cylinder retracts to the initial position. At this time, the end of the rubber rod moves with the support rod and is pulled to the position of the clamping wheel at the top of the main body.

[0023] Preferably, a second auxiliary plate is slidably disposed on the main body to help the rubber rod move between the clamping wheel and the corresponding clamping wheel, and the second auxiliary plate is fixedly connected to the slide block.

[0024] By adopting the above technical solution, after the rubber rod moves to the position of the second auxiliary plate, the rubber plate pushes the second auxiliary plate to move. The movement of the second auxiliary plate causes the slide to move. The movement of the slide changes the distance between the clamping wheel and the corresponding clamping wheel, so that the rubber rod can smoothly enter between the clamping wheel and the corresponding clamping wheel.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a connecting screw and a control component, the control component controls the movement of the gripper to limit the movement of the mounting base, provides a fulcrum for the movement of the connecting screw, the connecting screw passes into the broken rubber rod, and the broken rubber rod is pulled out under the action of the traction rope; 2. By setting up a traction rod and a clamping cylinder, the rubber plate can be moved to the clamping wheel position after the rubber rod has been moved to the designated position; 3. By setting the first auxiliary plate, after the rubber rod moves to the position of the second auxiliary plate, the rubber plate pushes the second auxiliary plate to move. The movement of the second auxiliary plate causes the slide to move. The movement of the slide changes the distance between the clamping wheel and the corresponding clamping wheel, so that the rubber rod can smoothly enter between the clamping wheel and the corresponding clamping wheel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the prestressed duct rubber rod extraction trolley according to an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the winding component according to an embodiment of this application.

[0028] Figure 3yes Figure 2 A schematic diagram of the structure at point A in the middle.

[0029] Figure 4 This is a schematic diagram of the structure of the push cylinder according to an embodiment of this application.

[0030] Figure 5 yes Figure 4 A schematic diagram of the structure at point B.

[0031] Figure 6 This is a schematic diagram of the structure of the second driving component in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the structure of the control component according to an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures: 1. Main body; 11. Mounting base; 12. Traction rope; 13. Connecting screw; 14. Gripper; 141. Anti-slip pad; 15. Clamping wheel; 16. Slide; 161. First return spring; 162. Support shaft; 163. Sprocket; 2. First drive assembly; 21. Support plate; 22. Telescopic rod; 23. First motor; 231. First spur gear; 232. Second spur gear; 24. Traction rod; 25. Push cylinder; 26. Support rod; 27. First auxiliary plate; 28. Clamping cylinder; 281. Clamping plate; 29. ​​Second auxiliary plate; 3. Control assembly; 1. Connecting rod; 32. Control screw; 33. Third spur gear; 34. First gear ring; 35. Second gear ring; 36. Second motor; 361. Fourth spur gear; 37. Third motor; 38. First support frame; 381. Take-up roller; 39. Fourth motor; 4. Adjustment assembly; 41. Linkage shaft; 42. Support base; 43. Second return spring; 44. First pulley; 45. Second pulley; 46. Fifth motor; 5. Take-up assembly; 51. Storage rack; 52. Drive shaft; 53. Sixth motor; 531. First bevel gear; 532. Second bevel gear. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0035] This application discloses a prestressed duct rubber rod extraction trolley in its embodiments. (Refer to...) Figure 1 The prestressed duct rubber rod extraction trolley includes the main body 1.

[0036] Reference Figure 1 as well as Figure 2The main body 1 has two sets of clamping wheels 15 at its top. Each set of clamping wheels 15 consists of three clamping wheels 15, which are arranged sequentially from left to right along the length of the main body 1. The two sets of clamping wheels 15 are symmetrically arranged along the axis of the main body 1, and two sets of clamping wheels 15 are also provided on the left side of the main body 1.

[0037] Reference Figure 2 as well as Figure 3 The main body 1 has several sliding blocks 16 slidably disposed within it. A third sliding groove is formed along the width direction of the main body 1, and the sliding blocks 16 slide against the inner wall of the third sliding groove. Each sliding block 16 corresponds to a single set of clamping wheels 15. Three support shafts 162 are rotatably mounted on each sliding block 16. The support shafts 162 are vertically arranged, and the clamping wheels 15 are fixedly sleeved on the support shafts 162, with each clamping wheel 15 corresponding to a support shaft 162. Several first return springs 161 are fixedly connected to the side wall of each sliding block 16 away from adjacent sliding blocks 16. These first return springs 161 are spaced apart along the length direction of the sliding block 16, and the end of each return spring away from the sliding block 16 slides against the inner wall of the third sliding groove.

[0038] Reference Figure 2 as well as Figure 3 The bottom end of the support shaft 162 passes through the slide 16, and a sprocket 163 is fixedly sleeved on the end of the support shaft 162 that passes through the slide 16. A transmission chain is wound around the three sprockets 163 corresponding to the single set of clamping wheels 15. A fourth motor 39 is slidably installed inside the main body 1. The fourth motor 39 is located at the bottom of the slide 16, and a fourth sliding groove is opened in the main body 1 along its width direction. The fourth motor 39 slides and engages with the inner sidewall of the fourth sliding groove. The output end of the fourth motor 39 is fixedly connected to the end of the support shaft 162 that passes through the fourth sliding groove.

[0039] Reference Figure 2 as well as Figure 3 The main body 1 is equipped with an adjustment assembly 4, which includes a linkage shaft 41. The linkage shaft 41 is positioned between two sets of clamping wheels 15 and is vertically installed inside the main body 1. Support seats 42 are fitted at both ends of the linkage shaft 41, and the support seats 42 are rotatably connected to the linkage shaft 41. A fifth sliding groove is formed along the length of the main body 1, and the support seats 42 slide against the inner wall of the fifth sliding groove. A second return spring 43 is fixedly connected to the bottom support seat 42, and the end of the second return spring 43 away from the support seat 42 is fixedly connected to the inner wall of the fifth sliding groove.

[0040] Reference Figure 2 as well as Figure 3 Two second pulleys 45 are spaced apart along the length of a single linkage shaft 41. A first pulley 44 is fixedly sleeved on the clamping wheel 15 closest to the linkage shaft 41 in a single set of clamping wheels 15. A transmission belt is wound around the first pulley 44 and its corresponding second pulley 45.

[0041] Reference Figure 1 as well as Figure 2 A second auxiliary plate 29 is slidably mounted on the main body 1, and the second auxiliary plate 29 corresponds one-to-one with the slide block 16. The bottom surface of the second auxiliary plate 29 passes through the main body 1 and is fixedly connected to the slide block 16.

[0042] Reference Figure 1 as well as Figure 2 A winding assembly 5 is provided on the right side of the main body 1. The winding assembly 5 includes a storage rack 51 and a drive shaft 52. The drive shaft 52 passes through the main body 1 and is rotatably connected to the main body 1. The storage rack 51 is fixedly sleeved on the drive shaft 52.

[0043] Reference Figure 2 The main body 1 contains a sixth motor 53. A first bevel gear 531 is fixedly sleeved on the output end of the sixth motor 53, and a second bevel gear 532 is fixedly sleeved on the bottom end of the drive shaft 52. The first bevel gear 531 and the second bevel gear 532 mesh with each other. When the sixth motor 53 starts, it drives the first bevel gear 531 to rotate. The rotation of the first bevel gear 531 causes the second bevel gear 532 to rotate, which in turn causes the drive shaft 52 to rotate. The rotation of the drive shaft 52 causes the storage rack 51 to rotate, and the rotation of the storage rack 51 winds up the rubber rod.

[0044] Reference Figure 2 as well as Figure 4 A second support frame is rotatably mounted on the side wall of the main body 1 away from the storage rack 51, and the second support frame is vertically arranged. A push cylinder 25 is fixedly connected to the top of the second support frame, and a support rod 26 is fixedly connected to the output end of the push cylinder 25. Two traction rods 24 are passed through the end of the support rod 26 away from the push cylinder 25, and the two traction rods 24 are symmetrically arranged along the axis of the push cylinder 25.

[0045] Reference Figure 5 The support rod 26 has a sixth sliding groove along its length, and the traction rod 24 slides against the inner wall of the sixth sliding groove. A third return spring is fixedly connected to the end of the traction rod 24 located in the sixth sliding groove, and the end of the third return spring away from the traction rod 24 is fixedly connected to the inner wall of the sixth sliding groove. A first auxiliary plate 27 is fixedly connected to the end of the traction rod 24 away from the support rod 26, and the first auxiliary plate 27 corresponds one-to-one with the traction rod 24. A clamping cylinder 28 is fixedly connected to the side wall of the first auxiliary plate 27 near the support rod 26, and a clamping plate 281 is fixedly connected to the output end of the clamping cylinder 28, and the clamping cylinder 28 corresponds one-to-one with the first auxiliary plate 27.

[0046] Reference Figure 5The main body 1 is equipped with a fifth motor 46, the output end of which is fixedly connected to the second support frame. An auxiliary support roller is rotatably mounted on the end of the second support frame away from the push cylinder 25.

[0047] Reference Figure 1 as well as Figure 6 A first support frame 38 is fixedly connected to the top surface of the main body 1. A second drive assembly is mounted on the first support frame 38, and the second drive assembly includes a third motor 37. The third motor 37 is fixedly connected to the second support frame, and a take-up reel 381 is fixedly connected to the output end of the third motor 37. The take-up reel 381 is rotatably connected to the first support frame 38. A traction rope 12 is wound around the take-up reel 381, and a mounting base 11 is fixedly connected to the end of the traction rope 12 away from the take-up reel 381.

[0048] Reference Figure 6 as well as Figure 7 The mounting base 11 is provided with several grippers 14, and there are four grippers 14. The grippers 14 are hinged to the mounting base 11. Anti-slip pads 141 are fixedly connected to the side wall of the grippers 14 away from the adjacent grippers 14. The anti-slip pads 141 correspond one-to-one with the grippers 14.

[0049] Reference Figure 7 A control component 3 is provided on the mounting base 11. The control component 3 includes a connecting rod 31 and a control screw 32. The connecting rod 31 passes through the outer wall of the mounting base 11. The mounting base 11 has a second sliding groove along its width direction, and the connecting rod 31 slides and engages with the inner wall of the second sliding groove. The end of the connecting rod 31 located outside the mounting base 11 is hinged to the top of the gripper 14, and the connecting rod 31 and the gripper 14 correspond one-to-one.

[0050] Reference Figure 7 The control screw 32 is inserted into the mounting base 11 and is rotatably connected to the inner end wall of the second slide groove. The control screw 32 is inserted into the connecting rod 31, and the control screw 32 and the connecting rod 31 are threaded together, with a one-to-one correspondence between the control screw 32 and the connecting rod 31.

[0051] Reference Figure 7 The mounting base 11 contains a fourth drive assembly, which includes a third spur gear 33 and a first gear ring 34. The third spur gear 33 is fixedly sleeved on the end of the control screw 32 away from the connecting rod 31, and the third spur gear 33 corresponds one-to-one with the control screw 32. The first gear ring 34 is rotatably mounted in the end of the mounting base 11 near the gripper 14, and the first gear ring 34 meshes with several third spur gears 33 simultaneously. A second gear ring 35 is fixedly connected to the side wall of the first gear ring 34 away from the third spur gear 33. A second motor 36 is provided in the mounting base 11, and a fourth spur gear 361 is fixedly sleeved on the output end of the second motor 36, and the fourth spur gear 361 meshes with the second gear ring 35.

[0052] Reference Figure 7 A connecting screw 13 is vertically inserted into the mounting base 11, with its bottom end protruding from the mounting base 11. The radius of the bottom end of the connecting screw 13 decreases sequentially from top to bottom along its length. A first sliding groove is formed in the mounting base 11 along its height direction, and the connecting screw 13 slides and engages with the inner wall of the first sliding groove.

[0053] Reference Figure 7 The mounting base 11 contains a first drive assembly 2, which includes a support plate 21. The support plate 21 is disposed within the mounting base 11 and is fixedly connected to the inner sidewall of the first slide groove. A connecting screw 13 passes through the support plate 21 and is threadedly engaged with the support plate 21.

[0054] Reference Figure 7 A third drive assembly, including a telescopic rod 22, is provided inside the mounting base 11. The telescopic rod 22 is fixedly connected to the top end of the connecting screw 13, and the end of the telescopic rod 22 away from the connecting screw 13 is fixedly connected to the top surface of the first sliding groove. A first motor 23 is vertically arranged inside the mounting base 11. A first spur gear 231 is fixedly sleeved on the output end of the first motor 23, and a second spur gear 232 is fixedly sleeved on the end of the telescopic rod 22 away from the connecting screw 13. The first spur gear 231 and the second spur gear 232 mesh with each other.

[0055] The implementation principle of the prestressed duct rubber rod extraction trolley in this application embodiment is as follows: When the mounting seat 11 moves into the duct, or when it is necessary to remove the rubber rod from the duct, the third motor 37 is started, the third motor 37 drives the winding wheel 381 to rotate, the rotation of the winding wheel 381 causes the traction rope 12 to control the movement of the mounting seat 11, the second motor 36 is started, the second motor 36 drives the fourth spur gear 361 to rotate, the rotation of the fourth spur gear 361 causes the second gear ring 35 to rotate, the rotation of the second gear ring 35 causes the first gear ring 34 to rotate, the rotation of the first gear ring 34 causes the third spur gear 33 to rotate, the rotation of the third spur gear 33 causes the control screw 32 to rotate, the rotation of the control screw 32 causes the connecting rod 31 to move, and the gripper 14 moves towards the inner wall of the duct. When the anti-slip pad 141 on the gripper 14 is in contact with the inner wall of the duct, the mounting seat 11 is then restricted within the duct. The first motor 23 starts, driving the first spur gear 231 to rotate. The rotation of the first spur gear 231 causes the second spur gear 232 to rotate, which in turn causes the telescopic rod 22 to rotate. The rotation of the telescopic rod 22 causes the connecting screw 13 to rotate. As the connecting screw 13 rotates, it moves toward the rubber rod, and the telescopic rod 22 extends at the same time. The connecting screw 13 then passes into the broken rubber rod. Then the third motor 37 rotates in the opposite direction, causing the traction rope 12 to pull the mounting base 11 out of the channel. After the mounting base 11 is removed from the channel, the mounting base 11 first contacts the second auxiliary plate 29 at the bottom of the main body 1. The mounting base 11 pushes the second auxiliary plate 29 to move. The movement of the second auxiliary plate 29 causes the slide 16 to move. The movement of the slide 16 causes the distance between the clamping wheel 15 and the corresponding clamping wheel 15 to change. The slide block 16 moves within the third slide groove and compresses the first return spring 161. Since the length of the transmission belt is fixed, the support shaft 162 moves simultaneously with the movement of the slide block 16. The movement of the support shaft 162 causes the first pulley 44 to move, which in turn causes the second pulley 45 to move. The movement of the second pulley 45 causes the linkage shaft 41 and the support block 42 to move. Meanwhile, under the action of the second return spring 43, when the rubber rod disengages from the clamping wheel 15, both the linkage shaft 41 and the clamping wheel 15 return to their initial positions. The linkage shaft 41 is used to control the rotation direction of the clamping wheel 15 and the corresponding clamping wheel 15, so that after the rubber rod moves between the clamping wheel 15 and the corresponding clamping wheel 15, the rotation of the clamping wheel 15 can drive the rubber rod to move. When the mounting base 11 moves away from the bottom clamping wheel 15, the bottom clamping wheel 15 only contacts the rubber rod. The fourth motor 39 corresponding to the bottom clamping wheel 15 starts, and the fourth motor 39 drives the support shaft 162 to rotate. The rotation of the support shaft 162 causes the first pulley 44 to rotate, the rotation of the first pulley 44 causes the second pulley 45 to rotate, the rotation of the second pulley 45 causes the linkage shaft 41 to rotate, the rotation of the linkage shaft 41 causes another second pulley 45 on the linkage shaft 41 to rotate, and after the other second pulley 45 rotates, the corresponding support shaft 162 rotates, so that the corresponding clamping wheel 15 rotates in the opposite direction to the clamping wheel 15. Even when the radius of the rubber rod changes, the clamping wheel 15 can still be in close contact with the rubber rod. The rubber rod moves under the traction of the bottom clamping wheel 15 and the mounting base 11. When the rubber rod reaches its highest position, the first motor 23 drives the connecting screw 13 to rotate in the opposite direction, causing the connecting screw 13 to disengage from the rubber rod. At the same time, the second motor 36 drives the gripper 14 to clamp the rubber rod, and then pushes the cylinder 25 to start. The cylinder 25 pushes the support rod 26 and the traction rod 24 to move towards the rubber rod. After the first auxiliary plate 27 contacts the rubber rod, the support rod 26 continues to move. At this time, the rubber rod pushes the first auxiliary plate 27 to move. The movement of the auxiliary plate 27 causes the traction rod 24 to retract into the sixth slide groove and compress the third return spring. After the rubber rod passes through the position of the traction rod 24, the traction rod 24 returns to the initial position under the action of the third return spring. At this time, the rubber rod is restricted within the traction rod 24 and the support rod 26. The clamping cylinder 28 is activated and pushes the clamping plate 281 to fix the rubber rod. At the same time, it pushes the cylinder 25 to retract to the initial position. At this time, the end of the rubber rod moves with the support rod 26 and is pulled to the position of the clamping wheel 15 at the top of the main body 1. The fourth motor 39 corresponding to the top clamping wheel 15 starts, and the fourth motor 39 drives the top clamping wheel 15 to move. The clamping wheel 15 drives the rubber rod to move towards the storage rack 51. At this time, the sixth motor 53 starts, and the sixth motor 53 drives the first bevel gear 531 to rotate. The rotation of the first bevel gear 531 causes the second bevel gear 532 to rotate. The rotation of the second bevel gear 532 causes the drive shaft 52 to rotate. The rotation of the drive shaft 52 causes the storage rack 51 to rotate. The rotation of the storage rack 51 winds up the rubber rod. By setting the connecting screw 13 and the control component 3, the control component 3 controls the movement of the gripper 14 to restrict the movement of the mounting base 11 and provides a fulcrum for the movement of the connecting screw 13. The connecting screw 13 passes into the broken rubber rod and is pulled out under the action of the traction rope 12.

[0056] 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 prestressed duct rubber rod pulling trolley comprising a main body (1), characterized in that: The main body (1) is provided with a mounting base (11), and a traction rope (12) for connecting to the mounting base (11) is provided on the main body (1). A connecting screw (13) is slidably provided in the mounting base (11). A first sliding groove is provided in the mounting base (11) for sliding cooperation with the connecting screw (13). The radius of the part of the connecting screw (13) away from the traction rope (12) gradually decreases along its length direction. Several grippers (14) are hinged on the mounting base (11). Anti-slip pads (141) for limiting the movement of the mounting base (11) are provided on the grippers (14). A first drive assembly (2) for controlling the movement of the connecting screw (13) is provided on the mounting base (11). A control assembly (3) for controlling the operation of the grippers (14) is provided on the mounting base (11). A second drive assembly for controlling the movement of the traction rope (12) is provided on the main body (1). The main body (1) is provided with several sets of clamping wheels (15) for driving the rubber rod to move. A slide block (16) is slidably provided on the main body (1). A third slide groove is provided on the main body (1) for sliding cooperation with the slide block (16). A first return spring (161) is fixedly connected to the slide block (16). The end of the first return spring (161) away from the slide block (16) slides and cooperates with the inner wall of the third slide groove. A support shaft (162) is rotatably mounted on the slide block (16). The clamping wheels (15) are fixedly sleeved on the support shaft (162). A shaft (162) passes through the slide block (16), a sprocket (163) is fixedly sleeved on the support shaft (162), a transmission chain is wound around the sprocket (163) and the adjacent sprocket (163), a fourth motor (39) is slidably arranged inside the main body (1), the output end of the fourth motor (39) is fixedly connected to the support shaft (162), a fourth sliding groove is opened inside the main body (1) for sliding cooperation with the fourth motor (39), and an adjustment component (4) is provided on the main body (1) for adjusting the distance between the clamping wheel (15) and the corresponding clamping wheel (15); The adjustment assembly (4) includes a linkage shaft (41), and a support seat (42) is sleeved on the end of the linkage shaft (41). The linkage shaft (41) and the support seat (42) are rotatably connected. The support seat (42) is slidably disposed between the clamping wheel (15) and the corresponding clamping wheel (15). A fifth sliding groove for sliding engagement of the support seat (42) is opened in the main body (1). A second return spring (43) is fixedly connected to the support seat (42). The end of the second return spring (43) away from the support seat (42) is fixedly connected to the inner side wall of the fifth sliding groove. A first pulley (44) is fixedly sleeved on the support shaft (162). A first pulley (44) is also fixedly sleeved on the support shaft (162) corresponding to the clamping wheel (15). A plurality of second pulleys (45) are fixedly sleeved on the linkage shaft (41). A transmission belt is wound on the first pulley (44) and the corresponding second pulley (45).

2. The prestressed duct rubber rod pulling trolley according to claim 1, characterized in that: The first drive assembly (2) includes a support plate (21), which is disposed in the mounting base (11). The support plate (21) is fixedly connected to the inner sidewall of the first slide groove. The connecting screw (13) passes through the support plate (21) and is threadedly engaged with it. The end of the connecting screw (13) away from the traction rope (12) protrudes from the mounting base (11). The mounting base (11) is provided with a third drive assembly for driving the connecting screw (13) to rotate.

3. The prestressed duct rubber rod pulling trolley according to claim 2, characterized in that: The third drive assembly includes a telescopic rod (22), which is fixedly connected to the end of the connecting screw (13) away from the gripper (14). The telescopic rod (22) is rotatably connected to the inner sidewall of the first slide groove. A first motor (23) is provided on the mounting base (11). A first spur gear (231) is fixedly sleeved on the output end of the first motor (23). A second spur gear (232) is fixedly sleeved on the end of the telescopic rod (22) away from the connecting screw (13). The first spur gear (231) and the second spur gear (232) mesh with each other.

4. The pre-stressed duct rubber rod pulling trolley according to claim 1, characterized in that: The control component (3) includes a connecting rod (31) and a control screw (32). The connecting rod (31) is slidably mounted on the mounting base (11). The mounting base (11) has a second sliding groove for sliding cooperation with the connecting rod (31). The end of the connecting rod (31) located outside the mounting base (11) is hinged to the gripper (14). The control screw (32) is rotatably connected to the inner wall of the second sliding groove. The control screw (32) passes into the connecting rod (31) and is threadedly engaged with it. The mounting base (11) is provided with a fourth drive component for driving the control screw (32) to rotate.

5. The prestressed duct rubber rod pulling trolley according to claim 4, characterized in that: The fourth drive assembly includes a third spur gear (33) and a first gear ring (34). The third spur gear (33) is fixedly sleeved on the control screw (32). The first gear ring (34) is rotatably installed in the mounting base (11). The first gear ring (34) meshes with the third spur gear (33). A second gear ring (35) is fixedly connected to the side wall of the first gear ring (34) away from the third spur gear (33). A second motor (36) is provided in the mounting base (11). A fourth spur gear (361) is fixedly sleeved on the output end of the second motor (36). The fourth spur gear (361) meshes with the second gear ring (35).

6. The pre-stressed duct rubber rod pulling trolley according to claim 1, characterized in that: The second drive assembly includes a third motor (37), a first support frame (38) is provided on the main body (1), the third motor (37) is provided on the first support frame (38), a winding wheel (381) is fixedly sleeved on the output end of the third motor (37), and the end of the traction rope (12) away from the mounting base (11) is wound around the winding wheel (381).

7. The pre-stressed duct rubber rod pulling trolley according to claim 1, characterized in that: The main body (1) is provided with a traction rod (24) for assisting the movement of the rubber rod. A second support frame is rotatably mounted on the main body (1). A fifth motor (46) is provided on the main body (1). The output end of the fifth motor (46) is fixedly connected to the second support frame. A push cylinder (25) is fixedly connected to the second support frame. A support rod (26) is fixedly connected to the output end of the push cylinder (25). The traction rod (24) slides through the support rod (26). The support rod (26) has an opening for engaging with the rubber rod. The sixth sliding groove of the traction rod (24) is fixedly connected to the support rod (26), and the end of the third return spring away from the support rod (26) is fixedly connected to the inner wall of the sixth sliding groove. The end of the traction rod (24) away from the support rod (26) is fixedly connected to the first auxiliary plate (27) for helping the rubber rod to push the traction rod (24) to move. The first auxiliary plate (27) is provided with a clamping cylinder (28), and a clamping plate (281) is fixedly connected to the output end of the clamping cylinder (28).

8. The prestressed duct rubber rod extraction trolley according to claim 1, characterized in that: The main body (1) is slidably provided with a second auxiliary plate (29) for helping the rubber rod move between the clamping wheel (15) and the corresponding clamping wheel (15), and the second auxiliary plate (29) is fixedly connected to the slide (16).

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