Bridge expansion joint welding fixing device

Abstract

The invention relates to the technical field of expansion joint welding, and mainly provides a bridge expansion joint welding fixing device. Comprising a workbench; the two moving modules are installed on the two sides of the workbench respectively, the two moving modules are jointly and rotationally connected with a supporting frame, the supporting frame is provided with a folding frame, and the folding frame is formed by sequentially hinging a plurality of supporting rods; and the clamping assemblies are all arranged on the folding frame and used for straightening the anchoring ribs, each clamping assembly comprises two connecting rods which are hinged to the two adjacent supporting rods of the folding frame respectively, the two connecting rods are jointly hinged to a mounting frame, and the mounting frame is slidably connected with two locking blocks. According to the method, the distances between the anchoring ribs are controlled in a unified mode, it is guaranteed that the distances between the anchoring ribs are the same, the quality of the expansion joint is improved, the anchoring ribs are straightened, the welding faces of the anchoring ribs are located in the same plane, and the welding strength of the anchoring ribs is improved.

Description

Technical Field

[0001] The invention relates to the technical field of expansion joint welding and mainly proposes a welding and fixing device for a bridge expansion joint. Background Art

[0002] Bridge expansion joints are an indispensable part of bridge structures. They allow the bridge deck to expand and contract freely under conditions such as temperature changes, vehicle loads, and possible seismic activities, so as to avoid stress accumulation caused by these factors and damage to the bridge structure. Expansion joints include shallow buried, medium buried, and deep buried types. The medium buried expansion joint is mainly composed of steel sections and anchor bars. During production, welding technology is used to fix the anchor bars to the steel sections to realize the expansion joint structure.

[0003] When the existing expansion joint welding fixing device clamps the anchor bar for welding, the clamping position each time cannot be completely unified, so that the two welding surfaces of the anchor bar cannot be in a tight fit with the steel section every time. In this case, when welding is performed, a cold weld will appear at the welding point between the anchor bar and the steel section, which will cause the welding strength of the anchor bar to decrease, the welding quality of the expansion joint to decrease, and the service life of the expansion joint to be shortened. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a welding and fixing device for a bridge expansion joint.

[0005] The technical implementation scheme of the present invention is: a bridge expansion joint welding fixing device, comprising: A workbench, on which a welding module is installed; Two mobile modules are respectively installed on both sides of the workbench, and the two mobile modules are rotatably connected to a support frame, and the support frame is provided with a folding frame, and the folding frame is composed of a plurality of support rods hinged in sequence, and the support rods of the folding frame are all in contact with the support frame; A plurality of clamping assemblies are arranged on the folding frame for aligning the anchor bar, and the clamping assemblies include: Two connecting rods are respectively hinged on two adjacent supporting rods of the folding frame, the two connecting rods are hinged together with a mounting frame, the mounting frame is slidably connected to two locking blocks, and the mounting frame is slidably connected to an extrusion block; A T-shaped frame, fixedly connected to the mounting frame, wherein the T-shaped frame is limitedly rotatably connected to a rotating plate; A trigger assembly, disposed on all of the mounting frames, for causing the locking block to move; A locking assembly is arranged on the moving module and is used to lock the supporting frame.

[0006] Furthermore, the rotating plate consists of a connecting part and an extrusion part, the extrusion part of the rotating plate is used to limit the anchoring ribs, and when the extrusion part of the rotating plate limits the anchoring ribs, the locking block is located in the middle of the horizontal line segment between the extrusion part of the rotating plate and the extrusion block.

[0007] Furthermore, it also includes: The number of the limit pins is consistent with the number of the rotating plates, and they are respectively slidably connected to the adjacent rotating plates. The T-shaped frame is provided with a limit hole, and the T-shaped frame is used to squeeze the limit pins. The limit holes of the T-shaped frame are used to limit the limit pins. A first elastic member is fixedly connected between the locking block and the mounting frame, and a second elastic member is fixedly connected between the mounting frame and the extrusion block.

[0008] Furthermore, the trigger component includes: The number of sliding frames is the same as that of the mounting frames, and they are slidably connected to adjacent mounting frames respectively. A third elastic member is fixed between the sliding frame and the adjacent mounting frame. The sliding frame is fixed with a limiting block, and the limiting block is used to squeeze two adjacent locking blocks to move.

[0009] Furthermore, the trigger component also includes: An extrusion plate, slidably connected to the support frame, and the extrusion plate is used to push the sliding frame and the extrusion block to move; The second electric push rod is fixedly connected to the support frame, and the telescopic end of the second electric push rod is fixedly connected to the extrusion plate.

[0010] Furthermore, the limit block is provided with a symmetrically distributed first inclined portion, a second inclined portion and a flat portion, the flat portion is located between the first inclined portion and the second inclined portion, the first inclined portion and the second inclined portion are both used to squeeze adjacent locking blocks, and the flat portion is used to limit adjacent locking blocks.

[0011] Furthermore, the locking assembly comprises: The fixing frame is fixedly connected to one of the moving modules, the fixing frame is slidably connected with a U-shaped rod, a through hole is arranged on one side of the supporting frame close to the fixing frame, and the U-shaped rod slides in the through hole of the supporting frame.

[0012] Furthermore, it also includes detection components, the number of which is the same as the number of the mounting frames, which are respectively arranged on adjacent mounting frames and are used to detect whether the anchor bars are qualified. The detection components include: A fixed shell, fixedly connected to the mounting frame; A first sliding rod, sealingly and slidably connected to the fixed shell; The second sliding rod is sealingly and slidably connected to the fixed shell, and the length of the first sliding rod is greater than the length of the second sliding rod.

[0013] Furthermore, the detection component also includes: A first hydraulic telescopic rod is fixedly connected to the mounting frame, a return spring is arranged in the first hydraulic telescopic rod, a telescopic end of the first hydraulic telescopic rod is located on the moving path of the sliding frame, a first oil guide pipe is connected between the first hydraulic telescopic rod and the fixed shell, and a connecting point between the fixed shell and the first oil guide pipe is located between the first sliding rod and the second sliding rod.

[0014] Furthermore, the detection component also includes: A second hydraulic telescopic rod is fixedly connected to the mounting frame, a return spring is arranged in the second hydraulic telescopic rod, the second hydraulic telescopic rod is fixedly connected to and communicated with a second oil guide pipe, and the second oil guide pipe is communicated with the first oil guide pipe; The indicating block is fixedly connected to the telescopic end of the second hydraulic telescopic rod, and the T-shaped frame is provided with a scale.

[0015] In summary, the beneficial effects of the present invention are as follows: the present invention ensures that the distance between each anchor bar is the same through unified control of the distance between each anchor bar, thereby improving the quality of the expansion joint, and aligns the anchor bars so that the welding surfaces of the anchor bars are located in the same plane, thereby reducing the probability of false welding, improving the strength of the anchor bar welding, and extending the service life of the expansion joint; while fixing the anchor bars, the qualification of each anchor bar is tested to avoid the increase of subsequent workload due to the substandard quality of a certain anchor bar during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the welding module and the second electric push rod of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the mobile module and the mounting frame of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the connecting rod and the extrusion plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating plate of the present invention after flipping; Figure 6 It is a schematic diagram of the three-dimensional structure of the limit pin and the fixed shell of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the first hydraulic telescopic rod and the second hydraulic telescopic rod of the present invention; Figure 8 An exploded view of the parts on the mounting frame of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the first sliding rod and the second sliding rod of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the T-shaped frame and the indicator block of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the mobile module and the fixed frame of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the fixing frame and the U-shaped rod of the present invention.

[0017] The meanings of the reference numerals in the figure are as follows: 1: workbench, 2: welding module, 3: moving module, 4: supporting frame, 401: first electric push rod, 5: folding frame, 6: connecting rod, 7: mounting frame, 8: locking block, 9: extrusion block, 10: T-shaped frame, 11: rotating plate, 12: limiting pin, 13: sliding frame, 130: limiting block, 1301: first inclined portion, 1302: second inclined portion, 1303: plane portion, 14: extrusion plate, 15: second electric push rod, 16: fixed frame, 17: U-shaped rod, 18: fixed shell, 1801: first sliding rod, 1802: second sliding rod, 19: first hydraulic telescopic rod, 20: first oil guide pipe, 21: second hydraulic telescopic rod, 22: second oil guide pipe, 23: indication block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: A bridge expansion joint welding fixture, such as Figure 1-Figure 8 As shown, it includes: a workbench 1, on which a welding module 2 is installed; two moving modules 3, respectively installed on both sides of the workbench 1, the two moving modules 3 are rotatably connected to a support frame 4, the support frame 4 is provided with a folding frame 5, the folding frame 5 is composed of a plurality of support rods hinged in sequence, and the support rods of the folding frame 5 are all in contact with the support frame 4; a plurality of clamping components are all arranged on the folding frame 5, for straightening the anchor bar, the clamping components include: two connecting rods 6, respectively hinged on two adjacent support rods of the folding frame 5, the two connecting rods 6 are jointly hinged with a mounting frame 7, the mounting frame 7 is slidably connected to two locking blocks 8, and the mounting frame 7 is slidably connected to an extrusion block 9; a T-shaped frame 10, fixedly connected to the mounting frame 7, the T-shaped frame 10 is limited and rotatably connected to a rotating plate 11; a trigger component is arranged on all mounting frames 7, for moving the locking block 8; a locking component is arranged on the moving module 3, for locking the support frame 4.

[0020] In the above scheme, the problem of gap between the welding surface and the steel section of the anchor bar during welding is solved; the welding module 2 is composed of an electric slide and a mechanical arm, a welding head is installed on the mechanical arm, the moving module 3 is composed of an electric slide rail and an electric slider, the support frame 4 is rotatably connected with the electric sliders of the two moving modules 3, the support frame 4 is installed with a first electric push rod 401, the first electric push rod 401 is used to control the extension and contraction of the folding frame 5, the locking block 8 and the extrusion block 9 are both provided with grooves for locking the anchor bar, the rotating plate 11 is used to extrude the anchor bar so that the two welding surfaces of the anchor bar fit with the rotating plate 11, so that the two welding surfaces of the anchor bar are located on the same vertical plane.

[0021] like Figure 4 and Figure 5 As shown, the rotating plate 11 consists of a connecting portion and an extrusion portion. The extrusion portion of the rotating plate 11 is used to limit the anchoring ribs. When the extrusion portion of the rotating plate 11 limits the anchoring ribs, the locking block 8 is located in the middle of the horizontal line segment between the extrusion portion of the rotating plate 11 and the extrusion block 9.

[0022] In the above solution, the locking block 8 is used to lock the middle part of the anchor bar, thereby ensuring the weight balance of the anchor bar and improving the stability of locking the anchor bar.

[0023] like Figure 4-Figure 6 As shown, it also includes: limit pins 12, the number of which is the same as the number of rotating plates 11, which are respectively slidably connected to adjacent rotating plates 11, and a limit hole is opened on the T-shaped frame 10, and the T-shaped frame 10 is used to extrude the limit pins 12. The limit hole of the T-shaped frame 10 is used to limit the limit pins 12, and a first elastic member is fixedly connected between the locking block 8 and the mounting frame 7, and a second elastic member is fixedly connected between the mounting frame 7 and the extrusion block 9.

[0024] In the above scheme, a hemispherical surface is provided on the limit pin 12, which is used to enable the limit pin 12 to smoothly enter the limit hole of the T-shaped frame 10. The hemispherical surface of the limit pin 12 is squeezed against the T-shaped frame 10. A counterweight portion may be provided on the side of the limit pin 12 away from its hemispherical surface, so that the limit pin 12 can move smoothly under the action of the counterweight portion on it when the rotating plate 11 rotates. The first elastic member between the locking block 8 and the mounting frame 7 is set as a spring, which is used to support the locking block 8 and can drive the locking block 8 to reset after the locking block 8 moves. The second elastic member between the mounting frame 7 and the extrusion block 9 is set as a spring, which is used to drive the extrusion block 9 to reset.

[0025] like Figure 5 , Figure 7 and Figure 8As shown, the trigger assembly includes: sliding frames 13, the number of which is the same as the number of mounting frames 7, which are slidably connected to adjacent mounting frames 7 respectively, a third elastic member is fixedly connected between the sliding frames 13 and the adjacent mounting frames 7, and the sliding frame 13 is fixedly connected to a limiting block 130, which is used to squeeze two adjacent locking blocks 8 to move.

[0026] In the above solution, the third elastic member between the sliding frame 13 and the mounting frame 7 is configured as a spring for driving the sliding frame 13 to reset. When the limiting block 130 squeezes the two locking blocks 8, the two locking blocks 8 move away from each other.

[0027] like Figure 1-Figure 4 As shown, the trigger assembly also includes: an extrusion plate 14, which is slidably connected to the support frame 4, and the extrusion plate 14 is used to push the sliding frame 13 and the extrusion block 9 to move; a second electric push rod 15, which is fixed to the support frame 4, and the telescopic end of the second electric push rod 15 is fixed to the extrusion plate 14.

[0028] like Figure 7 and Figure 8 As shown, the limiting block 130 is provided with a first inclined portion 1301, a second inclined portion 1302 and a planar portion 1303 which are symmetrically distributed. The planar portion 1303 is located between the first inclined portion 1301 and the second inclined portion 1302. The first inclined portion 1301 and the second inclined portion 1302 are both used to squeeze adjacent locking blocks 8, and the planar portion 1303 is used to limit adjacent locking blocks 8.

[0029] In the above scheme, the sliding frame 13 and the side of the extrusion block 9 close to the extrusion plate 14 are located in different vertical planes, and the distance between the two vertical planes is equal to the length of the projection of the first inclined portion 1301 on the horizontal plane. After the extrusion plate 14 pushes the sliding frame 13 to make the first inclined portion 1301 disengage from the locking block 8, the extrusion plate 14 contacts the extrusion block 9.

[0030] like Figure 1 , Fig.11 and Fig.12 As shown, the locking assembly includes: a fixing frame 16 fixed to one of the mobile modules 3, the fixing frame 16 is slidably connected to a U-shaped rod 17, a through hole is provided on one side of the support frame 4 close to the fixing frame 16, and the U-shaped rod 17 slides in the through hole of the support frame 4.

[0031] In the above scheme, the parts of the U-shaped rod 17 that slide in the through holes of the fixing frame 16 and the supporting frame 4 are both set to be cylindrical, and both ends of the U-shaped rod 17 are provided with spherical surfaces for allowing the U-shaped rod 17 to smoothly enter the through holes of the fixing frame 16 and the supporting frame 4. In the initial state, the U-shaped rod 17 is located in the through holes of the fixing frame 16 and the supporting frame 4.

[0032] When using the device for expansion joint welding, the worker first moves the steel section onto the workbench 1 and adjusts the angle of the steel section so that the steel section and the support frame 4 are in a parallel state. Then the worker starts the first electric push rod 401, and the telescopic end of the first electric push rod 401 extends to gradually unfold the folding frame 5, and the folding frame 5 drives all the mounting frames 7 to move until the mounting frame 7 drives the locking block 8 to move to the welding point between the steel section and the anchor bar, and then closes the first electric push rod 401. Thereafter, the anchor bars to be welded are placed in the grooves of the upper locking block 8 in sequence. , and make the anchor bar contact with the groove of the extrusion block 9, and then rotate the rotating plate 11 downward until the rotating plate 11 is limited by the T-shaped frame 10 and stops. During the rotation of the rotating plate 11, the limit pin 12 slides on the rotating plate 11 under the action of its own gravity. When the limit pin 12 initially contacts the T-shaped frame 10, the limit pin 12 slides on the rotating plate 11 under the extrusion of the T-shaped frame 10. When the rotating plate 11 stops rotating, the limit pin 12 enters the limit hole of the T-shaped frame 10 by its own gravity, thereby locking the angle of the rotating plate 11.

[0033] After the limiting pin 12 enters the limiting hole of the T-shaped frame 10, the staff starts the second electric push rod 15, the telescopic end of the second electric push rod 15 extends out and drives the extrusion plate 14 to move forward, and the extrusion plate 14 first contacts the sliding frame 13 during the movement and pushes the sliding frame 13 to move forward, the third elastic member of the sliding frame 13 is compressed, and the sliding frame 13 drives the limiting block 130 to move forward, and the two first inclined portions 1301 respectively squeeze the adjacent locking blocks 8 during the movement of the limiting block 130, so that the two locking blocks 8 move away from each other. The first elastic part of the locking block 8 is compressed, and when the upper locking block 8 moves upward, it drives the anchoring rib to move upward synchronously. When the first inclined portion 1301 is out of contact with the locking block 8, the flat portion 1303 contacts the locking block 8, and the two locking blocks 8 stop moving, and the first elastic part of the locking block 8 stops being compressed. At this time, the anchoring rib is located in the grooves of the two locking blocks 8 at the same time, but the locking block 8 does not lock the anchoring rib. Then the extrusion plate 14 contacts the extrusion block 9 and pushes the extrusion block 9 to move, and the second elastic part of the extrusion block 9 is compressed.

[0034] During the movement of the extrusion block 9, the extrusion block 9 pushes the anchor bar to slide in the grooves of the two locking blocks 8, and the flat portion 1303 slides relative to the locking block 8. The anchor bar moves and gradually contacts the rotating plate 11, and is then limited by the rotating plate 11, so that the anchor bar moves along the grooves of the two locking blocks 8, and the anchor bar gradually rotates toward a horizontal state (the two welding surfaces of the anchor bar are located on the same vertical plane) until the second inclined portion 1302 contacts the locking block 8, and then during the movement of the extrusion block 9 and the limiting block 130, the two locking blocks 8 move away from each other again. , the first elastic part of the locking block 8 is compressed again. Under the joint action of the two locking blocks 8, the extrusion block 9 and the rotating plate 11, the anchor bar gradually rotates to a horizontal state, and is gradually squeezed by the two locking blocks 8 and the extrusion block 9 until the telescopic end of the second electric push rod 15 is fully extended and stops. At this time, the anchor bar has swung to a horizontal state and is locked by the two locking blocks 8 and the extrusion block 9. By aligning the anchor bar, the fit between the anchor bar and the steel section is ensured during welding, avoiding the occurrence of cold welding, improving the integrity of the anchor bar welding, and extending the service life of the expansion joint.

[0035] After the anchor bar is locked, the staff removes the U-shaped rod 17, and the U-shaped rod 17 releases the limit on the through hole of the support frame 4. Then the support frame 4 is rotated (the side of the support frame 4 close to the mounting frame 7 swings upward), and the support frame 4 drives the parts thereon to rotate synchronously until the support frame 4 rotates 180° and stops, and inserts the U-shaped rod 17 back into the through holes of the fixing frame 16 and the support frame 4. The U-shaped rod 17 locks the angle of the fixing frame 16 through the through holes of the fixing frame 16, and the folding frame 5 is used to uniformly adjust the position of the anchor bars to ensure that the distances between the anchor bars are the same, thereby improving the quality of the expansion joint.

[0036] When the support frame 4 stops rotating, the limit pin 12 is reversed by 180°, and the limit pin 12 moves downward along the rotating plate 11 under the action of its own gravity and slides out of the limit hole of the T-shaped frame 10, and then the rotating plate 11 swings downward under the action of its own gravity.

[0037] After the support frame 4 stops rotating and all the rotating plates 11 swing downward, the staff starts the moving module 3, so that the moving module 3 drives the support frame 4 to move backward, and the support frame 4 drives the parts thereon to move synchronously, so that the anchor bar gradually fits with the steel section, and the moving module 3 is closed after the anchor bar is fitted with the steel section. Then the staff starts the welding module 2, and the welding module 2 welds the anchor bars one by one. After the welding module 2 has completed welding the anchor bars, the staff closes the welding module 2 and starts the second electric push rod 15. The telescopic end of the second electric push rod 15 is retracted and drives the extrusion plate 14 to move synchronously. The extrusion plate 14 releases the extrusion of the extrusion block 9 and the sliding frame 13. The extrusion block 9 moves forward under the elastic force of the second elastic member thereon, and stops after the elastic force of the second elastic member is completely released. The sliding frame 13 moves forward under the elastic force of the third elastic member thereon, and drives the limit block 130 to move synchronously, and stops after the elastic force of the third elastic member is completely released.

[0038] When the extrusion block 9, the sliding frame 13 and the limit block 130 stop moving, the extrusion block 9 releases the extrusion on the anchor bar, and the limit block 130 releases the extrusion on the two locking blocks 8. The two locking blocks 8 approach each other under the elastic force of their respective first elastic members. After the locking block 8 stops moving, the staff moves the steel section to the right for a distance so that the welded anchor bar and the mounting frame 7 are in a staggered state. Then the staff starts the moving module 3 to drive the supporting frame 4 to move forward until the moving module 3 is reset to the initial state and stops. Thereafter, the staff removes the U-shaped rod 17, and the U-shaped rod 17 releases the lock on the supporting frame 4. The staff rotates the supporting frame 4 in the opposite direction to rotate and reset the supporting frame 4. After reversing the supporting frame 4 180°, the staff inserts the U-shaped rod 17 back into the through hole of the fixing frame 16 and the supporting frame 4 to lock the supporting frame 4.

[0039] During the process of reverse reset of the support frame 4, the rotating plate 11 swings under the action of its own gravity. When the support frame 4 rotates and resets, the rotating plate 11 swings and resets synchronously, and the limit pin 12 resets under the action of its own gravity. Then the staff starts the first electric push rod 401, and the telescopic end of the first electric push rod 401 retracts and resets and drives the folding frame 5 to retract and reset. The above actions are repeated when the expansion joint is welded later.

[0040] Embodiment 2: Based on embodiment 1, Figure 5-Figure 9 As shown, it also includes a detection component, the number of which is consistent with the number of mounting frames 7, and is respectively arranged on adjacent mounting frames 7, for detecting whether the anchor bars are qualified. The detection component includes: a fixed shell 18, fixed to the mounting frame 7; a first sliding rod 1801, sealed and slidably connected to the fixed shell 18; a second sliding rod 1802, sealed and slidably connected to the fixed shell 18, and the length of the first sliding rod 1801 is greater than the length of the second sliding rod 1802.

[0041] In the above scheme, the fixed shell 18 is located near the lower side of the mounting frame 7, so that when the anchor rib is placed in the groove of the upper locking block 8, the anchor rib does not contact the fixed shell 18, and hydraulic oil is injected between the first sliding rod 1801, the second sliding rod 1802 and the fixed shell 18. The length of the first sliding rod 1801 is greater than the length of the second sliding rod 1802, so that when the anchor rib is fixed by the locking block 8 and the extrusion block 9, the first sliding rod 1801 and the second sliding rod 1802 can extend to contact the anchor rib.

[0042] like Figure 7-Figure 9 As shown, the detection component also includes: a first hydraulic telescopic rod 19, which is fixed to the mounting frame 7, a return spring is arranged in the first hydraulic telescopic rod 19, the telescopic end of the first hydraulic telescopic rod 19 is located on the moving path of the sliding frame 13, and a first oil guide pipe 20 is connected between the first hydraulic telescopic rod 19 and the fixed shell 18, and the connection point between the fixed shell 18 and the first oil guide pipe 20 is located between the first sliding rod 1801 and the second sliding rod 1802.

[0043] In the above scheme, the telescopic end of the first hydraulic telescopic rod 19 is initially in an extended state, the first hydraulic telescopic rod 19 and the first oil guide pipe 20 are filled with hydraulic oil, and the upper part of the sliding frame 13 is used to squeeze the telescopic end of the first hydraulic telescopic rod 19, thereby pushing out the hydraulic oil in the first hydraulic telescopic rod 19.

[0044] like Figure 7 , Figure 8 and Fig.10 As shown, the detection component also includes: a second hydraulic telescopic rod 21, which is fixed to the mounting frame 7, a return spring is arranged in the second hydraulic telescopic rod 21, the second hydraulic telescopic rod 21 is fixed to and connected with a second oil guide pipe 22, and the second oil guide pipe 22 is connected with the first oil guide pipe 20; an indicator block 23, which is fixed to the telescopic end of the second hydraulic telescopic rod 21, and a scale is arranged on the T-shaped frame 10.

[0045] In the above scheme, the second hydraulic telescopic rod 21 and the second oil guide pipe 22 are filled with hydraulic oil, the cross-section of the indicator block 23 is triangular, and the scale of the T-shaped frame 10 can be used to determine the distance that the telescopic end of the second hydraulic telescopic rod 21 drives the indicator block 23 to extend.

[0046] When the sliding frame 13 and the limit block 130 move, the second inclined surface 1302 contacts the locking block 8 and pushes the locking block 8 to lock the anchor bar. At the same time, the sliding frame 13 simultaneously pushes the telescopic end of the first hydraulic telescopic rod 19 to retract, the spring in the first hydraulic telescopic rod 19 is compressed, and the hydraulic oil in the first hydraulic telescopic rod 19 enters the fixed shell 18 through the first oil guide pipe 20. The first sliding rod 1801 and the second sliding rod 1802 move away from each other. In the process of straightening the anchor bar, the first sliding rod 1801 and the second sliding rod 1802 gradually contact the anchor bar. During the process of the anchoring bar being gradually locked, the first sliding rod 1801 and the second sliding rod 1802 are both limited by the anchoring bar, so that the hydraulic oil in the first hydraulic telescopic rod 19 cannot enter the fixed shell 18, so that the hydraulic oil in the first hydraulic telescopic rod 19 enters the second hydraulic telescopic rod 21 through the first oil guide pipe 20 and the second oil guide pipe 22. The hydraulic oil entering the second hydraulic telescopic rod 21 pushes the telescopic end of the second hydraulic telescopic rod 21 to extend, the spring in the second hydraulic telescopic rod 21 is compressed, and the telescopic end of the second hydraulic telescopic rod 21 drives the indicator block 23 to move upward synchronously.

[0047] After the anchor bar is completely locked, under the action of the spring in the second hydraulic telescopic rod 21, the first sliding rod 1801 and the second sliding rod 1802 both adapt to the position of the anchor bar and respectively support the inside of the anchor bar. At this time, if the gap between the two welding surfaces of the anchor bar is too large, after the two welding surfaces of the anchor bar are in contact with the rotating plate 11, the overall angle of the anchor bar will have a large deviation, which increases the sum of the lengths of the first sliding rod 1801 and the second sliding rod 1802 extending in the fixed shell 18, increases the hydraulic oil that can be contained in the fixed shell 18, and reduces the extension length of the telescopic end of the second hydraulic telescopic rod 21, so that the indicator block 23 is lower than the standard position. At this time, the staff can accurately judge the position of the indicator block 23 through the scale on the T-shaped frame 10. If the indicator block 23 is lower than the standard position, it means that the anchor bar is unqualified. If unqualified anchor bars are detected, the staff can continue welding after replacing them.

[0048] After the qualified anchor bars are welded, the sliding frame 13 releases the squeezing of the telescopic end of the first hydraulic telescopic rod 19, and the telescopic end of the first hydraulic telescopic rod 19 is reset under the elastic force of the spring thereon, and the telescopic end of the second hydraulic telescopic rod 21 is reset under the elastic force of the spring thereon, and the hydraulic pressure in the second hydraulic telescopic rod 21 flows back to the first hydraulic telescopic rod 19 through the second oil guide pipe 22 and the first oil guide pipe 20. The telescopic end of the first hydraulic telescopic rod 19 is reset to draw the hydraulic oil in the fixed shell 18 back into the first hydraulic telescopic rod 19, and the first sliding rod 1801 and the second sliding rod 1802 move and reset.

[0049] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A bridge expansion joint welding fixture, characterized in that it comprises: A workbench (1), wherein a welding module (2) is installed on the workbench (1); Two mobile modules (3) are respectively installed on both sides of the workbench (1); the two mobile modules (3) are rotatably connected to a support frame (4) together; the support frame (4) is provided with a folding frame (5); the folding frame (5) is composed of a plurality of support rods hinged in sequence; the support rods of the folding frame (5) are all in contact with the support frame (4); A plurality of clamping assemblies are arranged on the folding frame (5) and are used to align the anchoring bars. The clamping assemblies include: Two connecting rods (6) are respectively hinged on two adjacent support rods of the folding frame (5); the two connecting rods (6) are hinged together with a mounting frame (7); the mounting frame (7) is slidably connected to two locking blocks (8); and the mounting frame (7) is slidably connected to an extrusion block (9); A T-shaped frame (10) is fixedly connected to the mounting frame (7), and the T-shaped frame (10) is connected to a rotating plate (11) in a limited rotation manner; a trigger assembly, arranged on all the mounting frames (7) and used to move the locking block (8); A locking component is arranged on the mobile module (3) and is used to lock the support frame (4).

2. A bridge expansion joint welding fixture according to claim 1, characterized in that: The rotating plate (11) is composed of a connecting portion and an extruding portion. The extruding portion of the rotating plate (11) is used to limit the anchoring bar. When the extruding portion of the rotating plate (11) limits the anchoring bar, the locking block (8) is located in the middle of the horizontal line segment between the extruding portion of the rotating plate (11) and the extruding block (9).

3. A bridge expansion joint welding fixture according to claim 1, characterized in that: include: The number of the limit pins (12) is the same as the number of the rotating plates (11), and they are respectively slidably connected to the adjacent rotating plates (11). The T-shaped frame (10) is provided with a limit hole, and the T-shaped frame (10) is used to squeeze the limit pins (12). The limit hole of the T-shaped frame (10) is used to limit the limit pins (12). A first elastic member is fixedly connected between the locking block (8) and the mounting frame (7), and a second elastic member is fixedly connected between the mounting frame (7) and the squeezing block (9).

4. A bridge expansion joint welding fixture according to claim 3, characterized in that: The trigger component comprises: The number of sliding frames (13) is the same as that of the mounting frames (7), and they are respectively slidably connected to adjacent mounting frames (7). A third elastic member is fixedly connected between the sliding frames (13) and the adjacent mounting frames (7). The sliding frames (13) are fixedly connected to a limiting block (130), and the limiting block (130) is used to squeeze two adjacent locking blocks (8) to move.

5. A bridge expansion joint welding fixture according to claim 4, characterized in that: The trigger component also includes: An extrusion plate (14) is slidably connected to the support frame (4), and the extrusion plate (14) is used to push the sliding frame (13) and the extrusion block (9) to move; The second electric push rod (15) is fixedly connected to the support frame (4), and the telescopic end of the second electric push rod (15) is fixedly connected to the extrusion plate (14).

6. A bridge expansion joint welding and fixing device according to claim 4, characterized in that: The limiting block (130) is provided with a first inclined portion (1301), a second inclined portion (1302) and a planar portion (1303) which are symmetrically distributed; the planar portion (1303) is located between the first inclined portion (1301) and the second inclined portion (1302); the first inclined portion (1301) and the second inclined portion (1302) are both used to squeeze adjacent locking blocks (8); and the planar portion (1303) is used to limit adjacent locking blocks (8).

7. A bridge expansion joint welding and fixing device according to claim 1, characterized in that: The locking assembly comprises: A fixed frame (16) is fixedly connected to one of the mobile modules (3); the fixed frame (16) is slidably connected to a U-shaped rod (17); a through hole is provided on a side of the support frame (4) close to the fixed frame (16); and the U-shaped rod (17) slides in the through hole of the support frame (4).

8. A bridge expansion joint welding fixture according to claim 4, characterized in that: It also includes detection components, the number of which is the same as the number of the mounting frames (7), which are respectively arranged on adjacent mounting frames (7) and are used to detect whether the anchor bars are qualified. The detection components include: A fixed shell (18) fixedly connected to the mounting frame (7); A first sliding rod (1801) sealingly and slidably connected to the fixed shell (18); The second sliding rod (1802) is sealingly and slidably connected to the fixed shell (18), and the length of the first sliding rod (1801) is greater than the length of the second sliding rod (1802).

9. A bridge expansion joint welding and fixing device according to claim 8, characterized in that: The detection component also includes: A first hydraulic telescopic rod (19) is fixedly connected to the mounting frame (7), a return spring is arranged in the first hydraulic telescopic rod (19), a telescopic end of the first hydraulic telescopic rod (19) is located on a moving path of the sliding frame (13), a first oil guide pipe (20) is connected between the first hydraulic telescopic rod (19) and the fixed shell (18), and a connecting point between the fixed shell (18) and the first oil guide pipe (20) is located between the first sliding rod (1801) and the second sliding rod (1802).

10. A bridge expansion joint welding and fixing device according to claim 9, characterized in that: The detection component also includes: a second hydraulic telescopic rod (21) fixedly connected to the mounting frame (7), a return spring being arranged in the second hydraulic telescopic rod (21), the second hydraulic telescopic rod (21) being fixedly connected to and in communication with a second oil guide pipe (22), the second oil guide pipe (22) being in communication with the first oil guide pipe (20); The indicating block (23) is fixedly connected to the telescopic end of the second hydraulic telescopic rod (21), and the T-shaped frame (10) is provided with a scale.

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