Broken line pre-tensioning method concrete precast beam bogie device and construction method

Abstract

The invention belongs to the technical field of bridge construction, and particularly relates to a broken line pre-tensioning method concrete precast beam bogie device and a construction method, the broken line pre-tensioning method concrete precast beam bogie device comprises a base, and further comprises a supporting device, a driving device and a self-locking device which are mounted on the base. According to the broken line pre-tensioning method concrete precast beam bogie device and the construction method, by arranging the driving device, steering of a tensioning broken line and starting of a double-shaft motor can be rapidly completed, a transmission rod can be driven to rotate, and a driving sleeve can be conveniently engaged with a bevel gear of a supporting lead screw by moving on the transmission rod; after the position of an adjusting seat is adjusted, a connecting plate can be conveniently detached and fully used, a stabilizing rod and a transmission rod are slidably connected in an inserted mode, a driving sleeve can be conveniently supported, and the transmission rod and the driving sleeve can be fixed and rapidly released through a shaft locker; therefore, the steering of the tension broken line can be quickly completed.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a broken line pre-tensioning method concrete prefabricated beam bogie device and a construction method. Background Art

[0002] The fold line pre-tensioning method is a relatively advanced prefabrication method for small and medium span prestressed concrete bridges in China, which can meet the requirements of prefabrication, assembly and rapidity of bridge design and construction at the current stage in my country. During the prefabrication of a single span, the fold line prestressed tendons are bent at a high position through a bogie at the tensioning end, and at a low position through a bender in the beam body. In order to further improve the efficiency of beam production, the long-line prefabrication method is often used, and two or more spans of multi-collapse beams are tensioned and prefabricated at the same time. In this way, a turning beam needs to be arranged between the spans to realize the bending of the prestressed tendons.

[0003] As the span of precast beams increases, the number of prestressed tendons that need to be bent also increases accordingly. The precast beam turning beam needs to bear a greater reaction force of the prestressed tendons, which makes it more difficult to release the fold line prestressed tendons. The existing precast beam bogies need to fix the rollers that support the tensioning fold line according to the turning position, which reduces the engineering efficiency. In order to meet the structural force requirements, they need to be very large, which is not economical and has no adjustment function. On the other hand, the fold line prestressed tendons are difficult to release. In severe cases, it will cause excessive stress concentration in the steering device between beams, causing local damage, thereby affecting the continuity of production. Summary of the invention

[0004] Based on the technical problem that the existing bogies do not have an adjustment function and the broken line prestressed tendons are difficult to release, which in severe cases may cause excessive stress concentration in the inter-beam steering gear, resulting in local damage, thereby affecting the continuity of production, the present invention proposes a broken line pre-tensioned concrete precast beam bogie device and a construction method.

[0005] The invention provides a fold line pre-tensioning method concrete precast beam bogie device, comprising a base, and also comprising a supporting device, a driving device and a self-locking device installed on the base.

[0006] The support device is located on the upper surface of the base and supports the tensioned fold line that needs to be guided. The support device includes an adjustment seat and a guide roller group, and the guide roller group supports and guides the tensioned fold line.

[0007] The driving device is located on the upper surface of the base and drives the adjusting seat to move up and down. The driving device includes a driving sleeve with a bevel gear. The rotation of the driving sleeve drives the guide roller group to move up and then turn the tensioning fold line.

[0008] The self-locking device is located on the outer surface of the adjustment seat and self-locks the adjustment seat. The self-locking device includes a self-locking mechanism and a transmission mechanism. The self-locking mechanism includes a self-locking rod and a self-locking block. After the self-locking block contacts the self-locking rod, the position of the adjustment seat is limited. The transmission mechanism includes a transmission rod. The rotation of the transmission rod drives the self-locking block to deflect.

[0009] Preferably, the supporting device also includes a supporting frame, which is fixedly mounted on the upper surface of the base, and a reinforcement frame is fixedly mounted between the two supporting frames. The adjusting seat is slidably inserted into the inner wall of the supporting frame, and the inner wall of the supporting frame is rotatably connected to a supporting screw with a bevel gear through a bearing, and the outer surface of the supporting screw is threadedly connected to the inner wall of the adjusting seat.

[0010] Through the above technical solution, the adjustment seat can be supported and the position adjusted by the support screw, which is convenient for making corresponding and precise adjustments to the steering height as required, and the two support frames are reinforced by the reinforcement frame.

[0011] Preferably, both ends of the guide roller group are rotatably connected to the inner wall of the adjustment seat through bearings. The guide roller group is composed of a guide roller, a wear-resistant layer and an anti-corrosion layer. The anti-corrosion layer is wrapped around the outer surface of the wear-resistant layer. The material of the wear-resistant layer is cemented carbide, and the material of the anti-corrosion layer is alumina ceramic.

[0012] Through the above technical scheme, in order to facilitate the stretching movement of the tensioning fold line, support is provided by a guide roller group, the wear resistance of the guide roller is increased by the wear-resistant layer and the anti-corrosion layer, and the corrosion resistance of the guide roller is increased by the hard alloy of the anti-corrosion layer, which facilitates increasing the service life of the guide roller.

[0013] Preferably, the driving device also includes a support plate, which is fixedly mounted on the outer surface of the support frame, a connecting plate is fixedly mounted on one end of the support plate by bolts, a dual-axis motor is fixedly mounted on the upper surface of the connecting plate, a transfer rod is fixedly mounted on one end of the output shaft of the dual-axis motor by a coupling, the outer surface of the transfer rod is slidably plugged into the inner wall of the drive sleeve, a stabilizing rod is fixedly mounted on the inner wall of the drive sleeve, and one end of the stabilizing rod is slidably plugged into the inner wall of the transfer rod.

[0014] Through the above technical scheme, the transfer rod can be driven to rotate by starting the dual-axis motor, and the drive sleeve can be easily engaged with the bevel gear supporting the screw by moving on the transfer rod. After adjusting the position of the adjustment seat, the connecting plate can be easily disassembled and fully used. The sliding connection between the stabilizing rod and the transfer rod can facilitate the support of the drive sleeve.

[0015] Preferably, a shaft locker is fixedly installed at one end of the driving sleeve, and the inner wall of the shaft locker contacts one end of the transmission rod. The shaft locker locks the driving sleeve and the transmission rod. One end of the driving sleeve drives the bevel gear at one end of the supporting screw to rotate through the bevel gear, and the outer surface of the support frame is hinged with a transmission door panel through a pin shaft.

[0016] Through the above technical solution, the transmission rod and the driving sleeve can be fixed and quickly released through the shaft locker.

[0017] Preferably, the self-locking mechanism also includes a self-locking shell, which is fixedly mounted on the outer surface of the adjusting seat, and both ends of the self-locking rod are fixedly mounted on the inner wall of the support frame. The inner wall of the self-locking shell is fixedly mounted with a spring connecting plate through a connecting sleeve, and one end of the spring connecting plate is fixedly mounted to one end of the self-locking block. A ball is rotatably connected to the inner surface of the self-locking block, and a threaded slide is fixedly mounted on the outer surface of the self-locking rod, and the ball is slidably connected to the inner wall of the threaded slide.

[0018] Through the above technical solution, the ball on the self-locking block is inserted into the groove of the threaded slide, so that the self-locking shell is fixed on the self-locking rod, so that the adjustment seat can be fixed, which is convenient for adjusting the stability of the seat. The spring connecting plate can facilitate the deflection of the self-locking block. The spring connecting plate is made of spring steel. The balls are distributed in a threaded path array on the circular ring surrounded by multiple self-locking blocks, which makes it easy for the balls to be inserted into the groove of the threaded slide in the shape of a thread.

[0019] Preferably, the inner wall of the self-locking shell is rotatably connected to a threaded sleeve with a gear through a bearing, the outer surface of the threaded sleeve is threadedly connected to an extrusion sleeve, the extrusion sleeve is slidably inserted into the inner wall of the self-locking shell, and the inner wall of the extrusion sleeve is slidably inserted into the outer surface of the self-locking block.

[0020] Through the above technical solution, the extrusion sleeve descends after the threaded sleeve rotates, and the extrusion sleeve pushes the self-locking block to deflect, making it easier for the self-locking block to contact the threaded slideway on the self-locking rod. At the same time, it is easier to adjust the lifting and lowering of the seat after the extrusion is stopped.

[0021] Preferably, the transmission mechanism further comprises a support plate, the support plate is fixedly mounted on the outer surface of the self-locking housing, the inner wall of the self-locking housing is rotatably connected to a transmission rod with a gear through a bearing, the gear of the transmission rod is meshed with the gear of the threaded sleeve, a movable sleeve with a bevel gear is slidably inserted on the outer surface of the transmission rod, a connecting spring is fixedly mounted on one end of the movable sleeve, one end of the connecting spring is fixedly mounted on the outer surface of the transmission rod, the upper surface of the support plate is rotatably connected to a driving toothed disc through a bearing seat, one end of the driving toothed disc passes through the self-locking housing and is fixed A crank handle is fixedly installed, and the upper surface of the support plate is rotatably connected to a ratchet group with a bevel gear through a bearing seat, the bevel gear of the ratchet group is meshed with the bevel gear of the movable sleeve, and the upper surface of the support plate is rotatably connected to a transmission gear plate through a bearing, and both of the transmission gear plates are meshed with the driving gear plate, and a limiting groove body is fixedly installed on the outer surface of the driving gear plate, and a pawl is slidably inserted into the inner wall of the limiting groove body, and one end of the pawl is fixedly installed with a reset spring, and one end of the reset spring is fixedly installed on the inner wall of the limiting groove body, and one end of the pawl is slidably inserted into the tooth groove of the ratchet.

[0022] Through the above technical scheme, a driving toothed disc can be driven to rotate by the crank handle, and after the driving toothed disc rotates, the ratchet group can be driven to rotate through the pawl, and the movable sleeve can be driven to rotate through the transmission of the ratchet group, thereby rotating the transmission rod. When the crank handle rotates in the other direction and the ratchet group cannot be driven to rotate through the pawl, the other driving toothed disc is driven to rotate after the transmission of the bevel gear, and the other driving toothed disc can drive the ratchet group to rotate through the pawl, thereby maintaining rotation in any two directions and can drive the transmission rod to rotate in the same direction. The two driving toothed discs are distributed in a mirror image, and the tooth grooves of the two ratchets are in opposite directions. By facilitating the rotation of the crank handle in two directions, one driving toothed disc always maintains rotation in one direction, thereby achieving a self-locking purpose.

[0023] Preferably, a coil assembly is fixedly mounted on the outer surface of the transmission rod, and the magnetic force generated by the coil assembly after being energized magnetically connects one end of the movable sleeve. A power-on assembly is fixedly mounted on the upper surface of the limiting groove body, and one end of the plug connector of the power-on assembly is electrically connected to one end of the coil assembly.

[0024] Through the above technical solution, after the power-on component is energized to generate magnetic force, the moving sleeve is adsorbed. The movement of the moving sleeve switches the meshing between the two bevel gears and the bevel gears on the ratchet group, changing the direction of the transmission rod, thereby unlocking the adjustment seat.

[0025] The present invention provides a construction method for a precast concrete beam bogie device using a folding line pre-tensioning method, comprising the following steps:

[0026] S1: Pour a concrete base between two spans of precast beams and reserve a seat hole for the base installation on the concrete base. After the base is inserted through the steel bar, it is densely poured with M20 mortar and inserted into the seat hole of the concrete base. The base is fixed to the support frame through the fixing of the base;

[0027] S2: After the connecting plate is fixed on the support plate by bolts, the transfer door plate is opened, the shaft locker is unlocked, the drive sleeve is moved, and the bevel gear on the drive sleeve is meshed with the bevel gear on the support screw rod. After the position of the drive sleeve is fixed by the shaft locker, the stabilizing bar moves in the transfer rod, and after the tensioning fold line passes through the guide roller group on the adjustment seat, the transfer rod is driven to rotate by starting the double-axis motor. After the transfer rod drives the driving sleeve to rotate, the driving sleeve drives the support screw rod to rotate through the bevel gear. After the support screw rod drives the adjustment seat threaded therewith to a suitable height, the double-axis motor stops, the bolts on the connecting plate are removed, the connecting plate is removed from the support plate, and the transfer door plate is closed;

[0028] S3: By rotating the crank handle on the self-locking housing, a driving toothed disc is driven to rotate. After the driving toothed disc rotates, the ratchet group is driven to rotate through the pawl. The transmission of the ratchet group can drive the bevel gear on the movable sleeve to rotate, and the movable sleeve drives the transmission rod to rotate. When the crank handle rotates in the other direction and cannot drive the ratchet group to rotate through the pawl, the transmission of the bevel gear is transmitted to drive another driving toothed disc to rotate. The other driving toothed disc can drive the ratchet group to rotate through the pawl, thereby maintaining rotation in any two directions. The transmission of the bevel gear can drive the transmission rod to rotate in the same direction. After the transmission rod drives the threaded sleeve to rotate through the gear, the threaded sleeve rotates and drives the extrusion sleeve to descend. The extrusion sleeve squeezes the self-locking block on the spring connecting plate, and the self-locking block fits the threaded slideway. The ball is fixed in the threaded slideway, so that the self-locking block cannot be separated from the self-locking rod, and the adjusting seat is fixed. The position of the adjusting seat is kept stable through the double-layer fixation of the support screw and the self-locking block.

[0029] S4: The anchoring trolley is used to anchor the prestressed steel strands and tensioning rods. By tensioning the tensioning rods, the anchoring trolley is driven to move, so that the prestressed steel strands are stretched to achieve the tensioning effect. When the steering beam needs to be removed, the power supply is connected through the power-on component, and the coil component is energized. After the coil component is energized, the suction force generated adsorbs the moving sleeve. After the other bevel gear of the moving sleeve is engaged with the bevel gear of the ratchet group, it drives the transmission rod to rotate in the other direction, drives the extrusion sleeve to rise, releases the extrusion of the self-locking block, and completes the unlocking of the adjustment seat.

[0030] The beneficial effects of the present invention are:

[0031] 1. By setting a supporting device, the tensioning fold line can be supported, which is convenient for the tensioning fold line to turn. The guide roller can facilitate the tensioning fold line to stretch and move, reduce resistance, and support is provided by a guide roller group. The guide roller has a wear-resistant layer and an anti-corrosion layer to increase the wear resistance. The hard alloy of the anti-corrosion layer increases the corrosion resistance of the guide roller, which is convenient for increasing the service life of the guide roller.

[0032] 2. By setting up a driving device, the steering of the tensioning fold line can be completed quickly. The start-up of the dual-axis motor can drive the transfer rod to rotate. The driving sleeve can be easily engaged with the bevel gear of the supporting screw by moving on the transfer rod. After adjusting the position of the adjusting seat, the connecting plate can be easily disassembled and can be fully used. The sliding connection between the stabilizing rod and the transfer rod can facilitate the support of the driving sleeve. The shaft locker can fix and quickly release the transfer rod and the driving sleeve, so that the steering of the tensioning fold line can be completed quickly. At the same time, the supporting screw can fix the adjusting seat, which solves the technical problems that the existing bogie does not have an adjustment function, the prestressed tendons of the fold line are difficult to release, and in severe cases, excessive stress concentration will occur in the steering gear between the beams, causing local damage, thereby affecting the continuity of production.

[0033] 3. By setting a self-locking device, the stability of the tensioning fold line after turning can be maintained, and a driving toothed disc can be driven to rotate through the crank handle, and after the driving toothed disc rotates, the ratchet group is driven to rotate through the pawl, and the transmission of the ratchet group can drive the movable sleeve to rotate, thereby the transmission rod rotates. When the crank handle rotates in the other direction and cannot drive the ratchet group to rotate through the pawl, the other driving toothed disc is driven to rotate after the transmission of the bevel gear, and the other driving toothed disc can drive the ratchet group to rotate through the pawl, thereby maintaining rotation in any two directions, and can drive the transmission rod to rotate in the same direction. The two driving toothed discs are mirror-imaged, and the tooth grooves of the two ratchets are in opposite directions. By facilitating the rotation of the crank handle in two directions, one driving toothed disc always keeps rotating in one direction, thereby achieving the purpose of self-locking and maintaining the stability of the adjustment seat. Even if the bogie is vibrated and the crank handle is affected, it will not cause the stability of the adjustment seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0035] Figure 2 A three-dimensional diagram of an adjustment seat structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0036] Figure 3A three-dimensional diagram of the guide roller group structure of a folding line pre-tensioning method concrete precast beam bogie device proposed by the present invention;

[0037] Figure 4 A three-dimensional diagram of a double-axle motor structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0038] Figure 5 A three-dimensional diagram of a transfer rod structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0039] Figure 6 A three-dimensional diagram of an extruded sleeve structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0040] Figure 7 A three-dimensional diagram of a threaded sleeve structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0041] Figure 8 A three-dimensional diagram of a self-locking block structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0042] Fig. 9 A three-dimensional diagram of a ball structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0043] Fig.10 A three-dimensional diagram of a transmission rod structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0044] Fig.11 A three-dimensional diagram of a driving gear disc structure of a precast concrete beam bogie device using a folding line pre-tensioning method proposed by the present invention;

[0045] Fig.12 A stereoscopic diagram of a ratchet group structure of a fold line pre-tensioned concrete precast beam bogie device proposed by the present invention.

[0046] In the figure: 1. base; 2. support frame; 21. reinforcement frame; 22. adjustment seat; 23. support screw; 24. guide roller group; 3. support plate; 31. connecting plate; 32. dual-axis motor; 33. transmission rod; 34. driving sleeve; 35. stabilizing rod; 36. shaft locker; 37. transmission door plate; 4. self-locking shell; 41. self-locking rod; 42. spring connecting plate; 43. self-locking block; 44. ball; 45. threaded slide; 46. threaded sleeve; 47. extrusion sleeve; 5. support plate; 51. transmission rod; 52. movable sleeve; 53. connecting spring; 54. driving gear disc; 55. crank; 6. ratchet group; 61. transmission gear disc; 62. limiting groove; 63. pawl; 64. reset spring; 7. coil assembly; 71. power-on assembly. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Reference Figure 1-Figure 12 A fold line pre-tensioned concrete precast beam bogie device comprises a base 1, and also comprises a supporting device, a driving device and a self-locking device installed on the base 1.

[0049] like Figure 2-3 As shown, in order to facilitate the turning of the tensioned fold line, the support device is located on the upper surface of the base 1 and supports the tensioned fold line that needs to be guided. The support device includes an adjustment seat 22 and a guide roller group 24, and the guide roller group 24 supports and guides the tensioned fold line.

[0050] Specifically, in order to support and adjust the adjustment seat 22, the support device also includes a support frame 2, the support frame 2 is fixedly installed on the upper surface of the base 1, a reinforcement frame 21 is fixedly installed between the two support frames 2, the adjustment seat 22 is slidably inserted into the inner wall of the support frame 2, and the inner wall of the support frame 2 is rotatably connected to a support screw 23 with a bevel gear through a bearing, and the outer surface of the support screw 23 is threadedly connected to the inner wall of the adjustment seat 22.

[0051] Specifically, in order to guide and support the tensioning fold line, the two ends of the guide roller group 24 are rotatably connected to the inner wall of the adjustment seat 22 through bearings. The guide roller group 24 is composed of a guide roller, a wear-resistant layer and an anti-corrosion layer. The anti-corrosion layer is wrapped on the outer surface of the wear-resistant layer. The material of the wear-resistant layer is hard alloy, and the material of the anti-corrosion layer is alumina ceramic. In order to facilitate the stretching movement of the tensioning fold line, it is supported by the guide roller group 24. The wear resistance of the guide roller is increased by the wear-resistant layer and the anti-corrosion layer, and the corrosion resistance of the guide roller is increased by the hard alloy of the anti-corrosion layer, which is convenient for increasing the service life of the guide roller.

[0052] like Figure 4-5 As shown, in order to drive the adjustment seat 22 to move up and down, the driving device is located on the upper surface of the base 1, and drives the adjustment seat 22 to move up and down. The driving device includes a driving sleeve 34 with a bevel gear. The rotation of the driving sleeve 34 drives the guide roller group 24 to rise and then turn the tensioning fold line.

[0053] The cam 31 is provided with a plurality of cams 32, each of which is provided with a plurality of cams 33. The cam 31 is provided with a plurality of cams 34, each of which is provided with a plurality of cams 35. The cam 31 is provided with a plurality of cams 36. The cam 31 is provided with a plurality of cams 37.

[0054] Specifically, in order to keep the driving sleeve 34 moving stably, a shaft locker 36 is fixedly installed at one end of the driving sleeve 34, and the inner wall of the shaft locker 36 contacts one end of the transmission rod 33. The shaft locker 36 locks the driving sleeve 34 and the transmission rod 33. One end of the driving sleeve 34 drives the bevel gear at one end of the supporting screw 23 to rotate through the bevel gear, and the outer surface of the support frame 2 is hinged with a transmission door plate 37 through a pin shaft.

[0055] like Figure 6-12 As shown, in order to fix the adjustment seat 22, the self-locking device is located on the outer surface of the adjustment seat 22, and self-locks the adjustment seat 22. The self-locking device includes a self-locking mechanism and a transmission mechanism. The self-locking mechanism includes a self-locking rod 41 and a self-locking block 43. After the self-locking block 43 contacts the self-locking rod 41, the position of the adjustment seat 22 is limited. The transmission mechanism includes a transmission rod 33. The rotation of the transmission rod 33 drives the self-locking block 43 to deflect.

[0056] Specifically, in order to fix the self-locking rod 41, the self-locking mechanism also includes a self-locking shell 4, which is fixedly mounted on the outer surface of the adjusting seat 22, and both ends of the self-locking rod 41 are fixedly mounted on the inner wall of the support frame 2. The inner wall of the self-locking shell 4 is fixedly mounted with a spring connecting plate 42 through a connecting sleeve, and one end of the spring connecting plate 42 is fixedly mounted with one end of a self-locking block 43. The inner surface of the self-locking block 43 is rotatably connected with a ball 44, and the outer surface of the self-locking rod 41 is fixedly mounted with a threaded slide 45, and the ball 44 is slidably connected to the inner wall of the threaded slide 45; the ball 44 on the self-locking block 43 is inserted into the groove of the threaded slide 45, so that the self-locking shell 4 is fixed on the self-locking rod 41, so that the adjusting seat 22 can be fixed, which is convenient for the stability of the adjusting seat 22, and the spring connecting plate 42 can facilitate the deflection of the self-locking block 43, and the spring connecting plate 42 is made of spring steel. The balls 44 are distributed in a thread path array on a ring surrounded by a plurality of self-locking blocks, so that the balls 44 can be inserted into the grooves of the threaded slideway 45 in a threaded shape.

[0057] Specifically, in order to drive the self-locking block 43 to deflect, the inner wall of the self-locking shell 4 is rotatably connected to a threaded sleeve 46 with a gear through a bearing, and the outer surface of the threaded sleeve 46 is threadedly connected to an extrusion sleeve 47, which is slidably inserted into the inner wall of the self-locking shell 4, and the inner wall of the extrusion sleeve 47 is slidably inserted into the outer surface of the self-locking block 43.

[0058] Specifically, in order to drive the threaded sleeve 46 to rise and fall, the transmission mechanism also includes a support plate 5, which is fixedly mounted on the outer surface of the self-locking housing 4, and the inner wall of the self-locking housing 4 is rotatably connected to a transmission rod 51 with a gear through a bearing, and the gear of the transmission rod 51 is meshed with the gear of the threaded sleeve 46, and a movable sleeve 52 with a bevel gear is slidably inserted on the outer surface of the transmission rod 51, and a connecting spring 53 is fixedly mounted on one end of the movable sleeve 52, and one end of the connecting spring 53 is fixedly mounted on the outer surface of the transmission rod 51, and the upper surface of the support plate 5 is rotatably connected to a driving toothed disc 54 through a bearing seat, and one end of a driving toothed disc 54 penetrates the self-locking A crank handle 55 is fixedly installed at the back of the shell 4, and the upper surface of the support plate 5 is rotatably connected to a ratchet group 6 with a bevel gear through a bearing seat. The bevel gear of the ratchet group 6 is meshed with the bevel gear of the movable sleeve 52, and the upper surface of the support plate 5 is rotatably connected to a transmission gear plate 61 through a bearing. Both transmission gear plates 61 are meshed with the driving gear plate 54, and a limiting groove body 62 is fixedly installed on the outer surface of the driving gear plate 54. A pawl 63 is slidably inserted into the inner wall of the limiting groove body 62, and one end of the pawl 63 is fixedly installed with a reset spring 64, and one end of the reset spring 64 is fixedly installed on the inner wall of the limiting groove body 62, and one end of the pawl 63 is slidably inserted into the tooth groove of the ratchet.

[0059] The crank 55 can drive a driving toothed disc 54 to rotate. After the driving toothed disc 54 rotates, the ratchet group 6 is driven to rotate through the pawl 63. The transmission of the ratchet group 6 can drive the movable sleeve 52 to rotate, thereby rotating the transmission rod 51. When the crank 55 rotates in the other direction and cannot drive the ratchet group 6 to rotate through the pawl 63, the other driving toothed disc 54 is driven to rotate after the transmission of the bevel gear. The other driving toothed disc 54 can drive the ratchet group 6 to rotate through the pawl 63, thereby maintaining rotation in any two directions, and can drive the transmission rod 51 to rotate in the same direction. The two driving toothed discs 54 are mirror-imaged, and the tooth grooves of the two ratchets are in opposite directions. By facilitating the rotation of the crank 55 in two directions, one driving toothed disc 54 always keeps rotating in one direction, thereby achieving a self-locking purpose.

[0060] Specifically, in order to facilitate the unlocking of the self-locking block 43 to fix the self-locking rod 41, a coil assembly 7 is fixedly installed on the outer surface of the transmission rod 51. The magnetic force generated by the coil assembly 7 after being energized magnetically connects one end of the movable sleeve 52. A power-on assembly 71 is fixedly installed on the upper surface of the limiting groove 62. One end of the plug connector of the power-on assembly 71 is electrically connected to one end of the coil assembly 7. The power-on assembly 71 and the coil assembly 7 are electrically conductive through slip rings. The wires between the slip rings pass through the transmission rod and are connected to the coil assembly 7 by wires.

[0061] After the power-on component 71 is energized to generate magnetic force, the movable sleeve 52 is adsorbed. The movement of the movable sleeve 52 switches the meshing between the two bevel gears and the bevel gears on the ratchet assembly 6, changing the direction of the transmission rod 51, thereby unlocking the adjustment seat 22.

[0062] like Figure 1-Figure 12 As shown, the construction method of a folding line pre-tensioning method concrete precast beam bogie device proposed by the present invention comprises the following steps:

[0063] S1: Assembling the inter-beam bogie device: pouring a concrete base between two spans of precast beams and reserving a seat hole for installing the base 1 on the concrete base. After inserting the steel bar into the base 1, the base 1 is densely poured with M20 mortar and inserted into the seat hole of the concrete base. The base 1 is fixed to the support frame 2;

[0064] S2: After the connecting plate 31 is fixedly installed on the support plate 3 by bolts, the transfer door plate 37 is opened, the shaft locker 36 is unlocked, the drive sleeve 34 is moved, and the bevel gear on the drive sleeve 34 is meshed with the bevel gear on the support screw 23. After the position of the drive sleeve 34 is fixed by the shaft locker 36, the stabilizing rod 35 is moved in the transfer rod 33, and after the tensioning fold line passes through the guide roller group 24 on the adjustment seat 22, the double-axis motor 32 is started to drive the transfer rod 33 to rotate. After the transfer rod 33 drives the drive sleeve 34 to rotate, the drive sleeve 34 drives the support screw 23 to rotate through the bevel gear. After the support screw 23 drives the adjustment seat 22 threaded thereto to a suitable height, the double-axis motor 32 stops, and the bolts on the connecting plate 31 are removed to remove the connecting plate 31 from the support plate 3, and the transfer door plate 37 is closed;

[0065] S3: By rotating the crank 55 on the self-locking housing 4, a driving toothed disc 54 is driven to rotate. After the driving toothed disc 54 rotates, the ratchet set 6 is driven to rotate through the pawl 63. The transmission of the ratchet set 6 can drive the bevel gear on the movable sleeve 52 to rotate. The movable sleeve 52 drives the transmission rod 51 to rotate. When the crank 55 rotates in the other direction and cannot drive the ratchet set 6 to rotate through the pawl 63, the transmission of the bevel gear is transmitted to drive another driving toothed disc 54 to rotate. The other driving toothed disc 54 can drive the ratchet set 6 to rotate through the pawl 63, thereby maintaining any two directions. The rotation of the bevel gear can drive the transmission rod 51 to rotate in the same direction. After the transmission rod 51 drives the threaded sleeve 46 to rotate through the gear, the threaded sleeve 46 rotates and drives the extrusion sleeve 47 to descend. The extrusion sleeve 47 squeezes the self-locking block 43 on the spring connecting plate 42. The self-locking block 43 fits the threaded slide 45. The ball 44 is fixed in the threaded slide 45, so that the self-locking block 43 cannot be separated from the self-locking rod 41, and the adjusting seat 22 is fixed. The position of the adjusting seat 22 is kept stable through the double-layer fixation of the support screw 23 and the self-locking block 43.

[0066] S4: The anchoring trolley is used to anchor the prestressed steel bundle and the tensioning rod. By tensioning the tensioning rod, the anchoring trolley is driven to move, so that the prestressed steel bundle is stretched to achieve the tensioning effect. When the steering beam needs to be removed, the power supply is connected through the power-on component 71, and the coil component 7 is energized. After the coil component 7 is energized, the suction force generated adsorbs the movable sleeve 52. After the other bevel gear of the movable sleeve 52 is meshed with the bevel gear of the ratchet group 6, it drives the transmission rod 51 to rotate in the other direction, drives the extrusion sleeve 47 to rise, releases the extrusion of the self-locking block 43, and completes the unlocking of the adjustment seat 22.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A precast concrete beam bogie device using a folding line pre-tensioning method, comprising a base (1), characterized in that: It also includes a supporting device, a driving device and a self-locking device installed on the base (1); The support device is located on the upper surface of the base (1) and supports the tensioned fold line that needs to be guided, the support device comprises an adjustment seat (22) and a guide roller group (24), and the guide roller group (24) supports and guides the tensioned fold line; The driving device is located on the upper surface of the base (1) and drives the adjusting seat (22) to move up and down. The driving device comprises a driving sleeve (34) with a bevel gear. The rotation of the driving sleeve (34) drives the guide roller group (24) to move up and then turn the tensioning fold line. The self-locking device is located on the outer surface of the adjustment seat (22) and self-locks the adjustment seat (22). The self-locking device comprises a self-locking mechanism and a transmission mechanism. The self-locking mechanism comprises a self-locking rod (41) and a self-locking block (43). After the self-locking block (43) contacts the self-locking rod (41), the position of the adjustment seat (22) is limited. The transmission mechanism comprises a transmission rod (33). The rotation of the transmission rod (33) drives the self-locking block (43) to deflect.

2. The fold line pre-tensioned concrete precast beam bogie device according to claim 1, characterized in that: The support device further comprises a support frame (2), wherein the support frame (2) is fixedly mounted on the upper surface of the base (1), a reinforcement frame (21) is fixedly mounted between the two support frames (2), the adjustment seat (22) is slidably inserted into the inner wall of the support frame (2), the inner wall of the support frame (2) is rotatably connected to a support screw rod (23) with a bevel gear via a bearing, and the outer surface of the support screw rod (23) is threadedly connected to the inner wall of the adjustment seat (22).

3. The fold line pre-tensioned concrete precast beam bogie device according to claim 1, characterized in that: The two ends of the guide roller group (24) are rotatably connected to the inner wall of the adjustment seat (22) through bearings. The guide roller group (24) is composed of a guide roller, a wear-resistant layer and an anti-corrosion layer. The anti-corrosion layer is wrapped around the outer surface of the wear-resistant layer. The material of the wear-resistant layer is cemented carbide, and the material of the anti-corrosion layer is alumina ceramic.

4. The fold line pre-tensioned concrete precast beam bogie device according to claim 2, characterized in that: The driving device also includes a support plate (3), the support plate (3) is fixedly mounted on the outer surface of the support frame (2), one end of the support plate (3) is fixedly mounted with a connecting plate (31) by means of bolts, a double-axis motor (32) is fixedly mounted on the upper surface of the connecting plate (31), one end of the output shaft of the double-axis motor (32) is fixedly mounted with a transmission rod (33) by means of a coupling, the outer surface of the transmission rod (33) is slidably plugged with the inner wall of a driving sleeve (34), a stabilizing rod (35) is fixedly mounted on the inner wall of the driving sleeve (34), and one end of the stabilizing rod (35) is slidably plugged with the inner wall of the transmission rod (33).

5. The folding line pre-tensioned concrete precast beam bogie device according to claim 4, characterized in that: A shaft locker (36) is fixedly installed on one end of the driving sleeve (34), and the inner wall of the shaft locker (36) contacts one end of the transmission rod (33). The shaft locker (36) locks the driving sleeve (34) and the transmission rod (33). One end of the driving sleeve (34) drives the bevel gear at one end of the supporting screw rod (23) to rotate through a bevel gear, and the outer surface of the supporting frame (2) is hinged with a transmission door plate (37) through a pin shaft.

6. The fold line pre-tensioned concrete precast beam bogie device according to claim 2, characterized in that: The self-locking mechanism also includes a self-locking shell (4), the self-locking shell (4) is fixedly mounted on the outer surface of the adjustment seat (22), the two ends of the self-locking rod (41) are fixedly mounted on the inner wall of the support frame (2), the inner wall of the self-locking shell (4) is fixedly mounted with a spring connecting plate (42) through a connecting sleeve, one end of the spring connecting plate (42) is fixedly mounted with one end of the self-locking block (43), the inner surface of the self-locking block (43) is rotatably connected with a ball (44), the outer surface of the self-locking rod (41) is fixedly mounted with a threaded slideway (45), and the ball (44) is slidably connected to the inner wall of the threaded slideway (45).

7. The fold line pre-tensioned concrete precast beam bogie device according to claim 6, characterized in that: The inner wall of the self-locking housing (4) is rotatably connected to a threaded sleeve (46) with a gear via a bearing, the outer surface of the threaded sleeve (46) is threadedly connected to an extrusion sleeve (47), the extrusion sleeve (47) is slidably inserted into the inner wall of the self-locking housing (4), and the inner wall of the extrusion sleeve (47) is slidably inserted into the outer surface of the self-locking block (43).

8. The folding line pre-tensioned concrete precast beam bogie device according to claim 7, characterized in that: The transmission mechanism further comprises a support plate (5), the support plate (5) being fixedly mounted on the outer surface of the self-locking housing (4), the inner wall of the self-locking housing (4) being rotatably connected to a transmission rod (51) with a gear through a bearing, the gear of the transmission rod (51) being meshed with the gear of the threaded sleeve (46), the outer surface of the transmission rod (51) being slidably plugged with a movable sleeve (52) with a bevel gear, one end of the movable sleeve (52) being fixedly mounted with a connecting spring (53), one end of the connecting spring (53) being fixedly mounted with the outer surface of the transmission rod (51), the upper surface of the support plate (5) being rotatably connected to a driving toothed disc (54) through a bearing seat, one end of the driving toothed disc (54) being fixedly mounted with a rocking wheel after passing through the self-locking housing (4) The handle (55) is provided on the upper surface of the support plate (5), and a ratchet group (6) with a bevel gear is rotatably connected via a bearing seat. The bevel gear of the ratchet group (6) meshes with the bevel gear of the movable sleeve (52). The upper surface of the support plate (5) is rotatably connected with a transmission toothed disc (61) via a bearing. Both transmission toothed discs (61) mesh with the driving toothed disc (54). A limiting groove body (62) is fixedly installed on the outer surface of the driving toothed disc (54). A ratchet pawl (63) is slidably inserted into the inner wall of the limiting groove body (62). A reset spring (64) is fixedly installed on one end of the ratchet pawl (63). One end of the reset spring (64) is fixedly installed on the inner wall of the limiting groove body (62). One end of the ratchet pawl (63) is slidably inserted into the tooth groove of the ratchet.

9. The folding line pre-tensioned concrete precast beam bogie device according to claim 8, characterized in that: A coil assembly (7) is fixedly mounted on the outer surface of the transmission rod (51); the magnetic force generated by the coil assembly (7) after being energized magnetically connects one end of the movable sleeve (52); a power-on assembly (71) is fixedly mounted on the upper surface of the limiting groove body (62); one end of the plug connector of the power-on assembly (71) is electrically connected to one end of the coil assembly (7).

10. A construction method for a precast concrete beam bogie device using a folding line pre-tensioning method, using the precast concrete beam bogie device using a folding line pre-tensioning method according to any one of claims 1 to 9, characterized in that: S1: pouring a concrete base between two spans of precast beams and reserving a seat hole for installing the base (1) on the concrete base. After inserting the steel bar into the base (1), the base (1) is densely poured with M20 mortar and the base (1) is inserted into the seat hole of the concrete base. The base (1) is fixed to the support frame (2); S2: After the connecting plate (31) is fixedly installed on the support plate (3) by bolts, the transfer door plate (37) is opened, the shaft locker (36) is unlocked, the drive sleeve (34) is moved, the bevel gear on the drive sleeve (34) is meshed with the bevel gear on the support screw rod (23), the position of the drive sleeve (34) is fixed by the shaft locker (36), and the stabilizing rod (35) is moved in the transfer rod (33), and the tensioning fold line is passed through the guide roller group (24) on the adjustment seat (22) After that, the double-axis motor (32) is started to drive the transmission rod (33) to rotate, and the transmission rod (33) drives the driving sleeve (34) to rotate, and the driving sleeve (34) drives the supporting screw (23) to rotate through the bevel gear. After the supporting screw (23) drives the adjusting seat (22) threadedly connected thereto to a suitable height, the double-axis motor (32) is stopped, and the bolts on the connecting plate (31) are removed, and the connecting plate (31) is removed from the supporting plate (3), and the transmission door plate (37) is closed; S3: By rotating the crank (55) on the self-locking housing (4), a driving toothed disc (54) is driven to rotate. After the driving toothed disc (54) rotates, the ratchet group (6) is driven to rotate through the pawl (63). The bevel gear on the movable sleeve (52) can be driven to rotate through the transmission of the ratchet group (6). The movable sleeve (52) drives the transmission rod (51) to rotate. When the crank (55) rotates in the other direction and cannot drive the ratchet group (6) to rotate through the pawl (63), the other driving toothed disc (54) is driven to rotate after the transmission of the bevel gear. The other driving toothed disc (54) can drive the ratchet group (6) to rotate through the pawl (63), thereby maintaining any two directions. The transmission rod (51) can be driven to rotate in the same direction through the transmission of the bevel gear. After the transmission rod (51) drives the threaded sleeve (46) to rotate through the gear, the threaded sleeve (46) rotates and drives the extrusion sleeve (47) to descend. The extrusion sleeve (47) squeezes the self-locking block (43) on the spring connecting plate (42). The self-locking block (43) fits the threaded slideway (45). The ball (44) is located in the threaded slideway (45) for fixing, so that the self-locking block (43) cannot be separated from the self-locking rod (41), and the adjusting seat (22) is fixed. Through the double-layer fixation of the supporting screw rod (23) and the self-locking block (43), the position of the adjusting seat (22) is kept stable. S4: The anchoring trolley is used to anchor the prestressed steel bundle and the tensioning rod. By tensioning the tensioning rod, the anchoring trolley is driven to move, so that the prestressed steel bundle is stretched to achieve the tensioning effect. When the steering beam needs to be removed, the coil assembly (7) is energized after the power supply is connected through the power supply component (71). After the coil assembly (7) is energized, the suction force generated is used to adsorb the movable sleeve (52). After the other bevel gear of the movable sleeve (52) is meshed with the bevel gear of the ratchet assembly (6), the transmission rod (51) is driven to rotate in the other direction, driving the extrusion sleeve (47) to rise, releasing the extrusion of the self-locking block (43), and completing the unlocking of the adjustment seat (22).

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