A welding and fixing device for bridge expansion joints

Abstract

The present invention relates to the technical field of expansion joint welding, and mainly proposes a fixing device for welding bridge expansion joints. It includes: a workbench; two moving modules, which are respectively installed on both sides of the workbench. A support frame is rotatably connected by the two moving modules. The support frame is provided with a folding frame, and the folding frame is composed of a number of support rods hinged in sequence; a number of clamping components are all arranged on the folding frame and are used to align the anchor bars. The clamping component includes: two connecting rods, which are respectively hinged on two adjacent support rods of the folding frame. An installation frame is jointly hinged by the two connecting rods, and two locking blocks are slidably connected to the installation frame. By uniformly controlling the distance between each anchor bar, the present invention ensures that the distances between the anchor bars are the same, improves the quality of the expansion joint, and aligns the anchor bars so that the welding surfaces of the anchor bars are in the same plane, thereby improving the welding strength of the anchor bars.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion joint welding, and mainly proposes a welding and fixing device for bridge expansion joints. 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 damage to the bridge structure caused by stress accumulation due to these factors. Expansion joints include shallow-buried type, middle-buried type, and deep-buried type. The middle-buried expansion joint is mainly composed of profiled steel and anchor bars. During production, the welding process is used to fix the anchor bars to the profiled steel to achieve the expansion joint structure.

[0003] When the existing expansion joint welding and fixing device clamps the anchor bars for welding, since the clamping positions cannot be completely unified each time, the two welding surfaces of the anchor bars cannot be in a tightly fitting state with the profiled steel every time. When welding under this condition, there will be a phenomenon of virtual welding at the welded joint of the anchor bar and the profiled steel, which will reduce the welding strength of the anchor bar, reduce the welding quality of the expansion joint, and shorten the service life of the expansion joint. Summary of the Invention

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

[0005] The technical implementation solution of the present invention is: a welding and fixing device for bridge expansion joints, including:

[0006] A workbench, on which a welding module is installed;

[0007] Two moving modules, which are respectively installed on both sides of the workbench. The two moving modules are jointly rotatably connected to a support frame. The support frame is provided with a folding frame, and the folding frame is composed of a number of support rods hinged in sequence. The support rods of the folding frame are all in contact with the support frame;

[0008] A number of clamping components, all arranged on the folding frame for aligning the anchor bars. The clamping component includes:

[0009] Two connecting rods, which are respectively hinged to two adjacent support rods of the folding frame. The two connecting rods are jointly hinged to an installation frame. The installation frame is slidably connected with two locking blocks, and the installation frame is slidably connected with a pressing block;

[0010] A T-shaped frame, fixedly connected to the installation frame. The T-shaped frame is rotationally connected to a rotating plate with a limit;

[0011] A trigger component, arranged on all the installation frames for moving the locking blocks;

[0012] A locking assembly is provided on the moving module and is used to lock the support frame.

[0013] Furthermore, the rotating plate is composed of a connecting portion and a pressing portion. The pressing portion of the rotating plate is used to limit the anchor bar. In the state where the pressing portion of the rotating plate limits the anchor bar, the locking block is located at the middle of the horizontal line segment between the pressing portion of the rotating plate and the pressing block.

[0014] Furthermore, it further includes:

[0015] Limit pins, the number of which is the same as that of the rotating plates, are respectively slidably connected to adjacent rotating plates. Limit holes are provided on the T-shaped frame. The T-shaped frame is used to press the limit pins, and 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 pressing block.

[0016] Furthermore, the triggering assembly includes:

[0017] Sliding frames, the number of which is the same as that of the mounting frames, are respectively slidably connected to adjacent mounting frames. A third elastic member is fixedly connected between the sliding frame and the adjacent mounting frame. The sliding frame is fixedly connected with a limit block, and the limit block is used to press adjacent two locking blocks to move.

[0018] Furthermore, the triggering assembly further includes:

[0019] A pressing plate is slidably connected to the support frame, and the pressing plate is used to push the sliding frame and the pressing block to move;

[0020] A 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 pressing plate.

[0021] Furthermore, symmetrically distributed first inclined surfaces, second inclined surfaces and a flat surface portion are provided on the limit block. The flat surface portion is located between the first inclined surface and the second inclined surface. Both the first inclined surface and the second inclined surface are used to press adjacent locking blocks, and the flat surface portion is used to limit adjacent locking blocks.

[0022] Furthermore, the locking assembly includes:

[0023] A fixing frame is fixedly connected to one of the moving modules. A U-shaped rod is slidably connected to the fixing frame. A through hole is provided on one side of the support frame close to the fixing frame, and the U-shaped rod slides in the through hole of the support frame.

[0024] Further, it further includes detection components, the number of which is the same as that of the mounting brackets, and they are respectively arranged on adjacent mounting brackets for detecting whether the anchor bars are qualified. The detection components include:

[0025] A fixed shell, fixedly connected to the mounting bracket;

[0026] A first sliding rod, hermetically and slidably connected to the fixed shell;

[0027] A second sliding rod, hermetically and slidably connected to the fixed shell, and the length of the first sliding rod is greater than that of the second sliding rod.

[0028] Further, the detection components further include:

[0029] A first hydraulic telescopic rod, fixedly connected to the mounting bracket. A return spring is arranged inside the first hydraulic telescopic rod. The telescopic end of the first hydraulic telescopic rod is located on the moving path of the sliding frame. A first oil guide pipe is communicated between the first hydraulic telescopic rod and the fixed shell, and the connection position between the fixed shell and the first oil guide pipe is located between the first sliding rod and the second sliding rod.

[0030] Further, the detection components further include:

[0031] A second hydraulic telescopic rod, fixedly connected to the mounting bracket. A return spring is arranged inside the second hydraulic telescopic rod. The second hydraulic telescopic rod is fixedly connected and communicated with a second oil guide pipe, and the second oil guide pipe is communicated with the first oil guide pipe;

[0032] An indicating block, fixedly connected to the telescopic end of the second hydraulic telescopic rod, and a scale is arranged on the T-shaped frame.

[0033] In summary, the beneficial effects of the present invention are as follows: By uniformly controlling the distance between each anchor bar, the present invention ensures that the distances between the anchor bars are the same, improves the quality of the expansion joint, and straightens the anchor bars so that the welding surfaces of the anchor bars are in the same plane, reduces the probability of false welding, improves the welding strength of the anchor bars, and extends the service life of the expansion joint; while fixing the anchor bars, it detects whether each anchor bar is qualified, avoiding an increase in subsequent workload due to unqualified quality of a certain anchor bar during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 It is a three-dimensional structural schematic diagram of the welding module and the second electric push rod of the present invention;

[0036] Figure 3Schematic three-dimensional structure diagram of the mobile module and the mounting bracket of the present invention;

[0037] Figure 4 Schematic three-dimensional structure diagram of the connecting rod and the pressing plate of the present invention;

[0038] Figure 5 Schematic three-dimensional structure diagram of the rotating plate after flipping of the present invention;

[0039] Figure 6 Schematic three-dimensional structure diagram of the limit pin and the fixed shell of the present invention;

[0040] Figure 7 Schematic three-dimensional structure diagram of the first hydraulic telescopic rod and the second hydraulic telescopic rod of the present invention;

[0041] Figure 8 Exploded view of the parts on the mounting bracket of the present invention;

[0042] Figure 9 Schematic three-dimensional structure diagram of the first sliding rod and the second sliding rod of the present invention;

[0043] Figure 10 Schematic three-dimensional structure diagram of the T-shaped bracket and the indicating block of the present invention;

[0044] Figure 11 Schematic three-dimensional structure diagram of the mobile module and the fixed bracket of the present invention;

[0045] Figure 12 Schematic three-dimensional structure diagram of the fixed bracket and the U-shaped rod of the present invention.

[0046] Meanings of the reference numerals in the drawings: 1: workbench, 2: welding module, 3: mobile module, 4: support frame, 401: first electric push rod, 5: folding frame, 6: connecting rod, 7: mounting bracket, 8: locking block, 9: pressing block, 10: T-shaped bracket, 11: rotating plate, 12: limit pin, 13: sliding frame, 130: limit block, 1301: first inclined surface portion, 1302: second inclined surface portion, 1303: flat surface portion, 14: pressing plate, 15: second electric push rod, 16: fixed bracket, 17: U-shaped rod, 18: fixed shell, 1801: first sliding rod, 1802: second sliding rod, 19: first hydraulic telescopic rod, 20: first oil conduit, 21: second hydraulic telescopic rod, 22: second oil conduit, 23: indicating block. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] Embodiment 1: A welding and fixing device for bridge expansion joints, as Figures 1 - 8 shown, 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, and the two moving modules 3 are jointly rotatably connected to a support frame 4. The support frame 4 is provided with a folding frame 5, and the folding frame 5 is composed of a number of support rods hinged in sequence. The support rods of the folding frame 5 are all in contact with the support frame 4; a number of clamping components are all arranged on the folding frame 5 for straightening the anchor bars. The clamping component includes: two connecting rods 6, respectively hinged on two adjacent support rods of the folding frame 5, and the two connecting rods 6 are jointly hinged to an installation frame 7. The installation frame 7 is slidably connected with two locking blocks 8, and the installation frame 7 is slidably connected with a pressing block 9; a T-shaped frame 10 is fixedly connected to the installation frame 7, and the T-shaped frame 10 is limitedly rotatably connected with a rotating plate 11; a triggering component is arranged on all the installation frames 7 for moving the locking blocks 8; a locking component is arranged on the moving module 3 for locking the support frame 4.

[0049] In the above solution, it aims to solve the problem that there will be a gap between the welding surface of the anchor bar and the profiled steel during welding; the welding module 2 is composed of an electric sliding frame and a robotic arm, and a welding head is installed on the robotic arm. The moving module 3 is composed of an electric slide rail and an electric slider. The support frame 4 is rotatably connected to the electric sliders of the two moving modules 3. The support frame 4 is installed with a first electric push rod 401, and the first electric push rod 401 is used to control the expansion and contraction of the folding frame 5. Grooves are provided on both the locking block 8 and the pressing block 9 for locking the anchor bar. The rotating plate 11 is used to press the anchor bar so that the two welding surfaces of the anchor bar are attached to the rotating plate 11, so that the two welding surfaces of the anchor bar are located on the same vertical plane.

[0050] As Figure 4 and Figure 5 shown, the rotating plate 11 is composed of a connecting part and a pressing part. The pressing part of the rotating plate 11 is used to limit the anchor bar. In the state where the pressing part of the rotating plate 11 limits the anchor bar, the locking block 8 is located in the middle of the horizontal line segment between the pressing part of the rotating plate 11 and the pressing block 9.

[0051] In the above solution, the locking block 8 locks the middle part of the anchor bar to ensure the balance of the weight of the anchor bar and improve the stability of locking the anchor bar.

[0052] As Figures 4 - 6As shown in the figure, it further includes: a limit pin 12, the number of which is the same as that of the rotating plates 11, and they are respectively slidably connected to adjacent rotating plates 11. The T-shaped frame 10 is provided with limit holes. The T-shaped frame 10 is used to squeeze the limit pin 12, and the limit holes of the T-shaped frame 10 are used to limit the limit pin 12. A first elastic member is fixedly connected between the locking block 8 and the mounting bracket 7, and a second elastic member is fixedly connected between the mounting bracket 7 and the extrusion block 9.

[0053] In the above solution, a hemispherical surface is provided on the limit pin 12 for 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 by the T-shaped frame 10. A counterweight portion can be provided on the side of the limit pin 12 away from its hemispherical surface, so that when the rotating plate 11 rotates, the limit pin 12 smoothly moves under the action of its counterweight portion. The first elastic member between the locking block 8 and the mounting bracket 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 bracket 7 and the extrusion block 9 is set as a spring, which is used to drive the extrusion block 9 to reset.

[0054] As shown in Figure 5 , Figure 7 and Figure 8 As shown in the figure, the trigger assembly includes: a sliding frame 13, the number of which is the same as that of the mounting brackets 7, and they are respectively slidably connected to adjacent mounting brackets 7. A third elastic member is fixedly connected between the sliding frame 13 and the adjacent mounting bracket 7. The sliding frame 13 is fixedly connected with a limit block 130, and the limit block 130 is used to squeeze two adjacent locking blocks 8 to move.

[0055] In the above solution, the third elastic member between the sliding frame 13 and the mounting bracket 7 is set as a spring, which is used to drive the sliding frame 13 to reset. When the limit block 130 squeezes the two locking blocks 8, the two locking blocks 8 move away from each other.

[0056] As shown in Figures 1 - 4 As shown in the figure, the trigger assembly further includes: an extrusion plate 14, which is slidably connected to the support frame 4. 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 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.

[0057] As shown in Figure 7 and Figure 8 As shown in the figure, the limit block 130 is provided with symmetrically distributed first inclined surfaces 1301, second inclined surfaces 1302 and a flat surface portion 1303. The flat surface portion 1303 is located between the first inclined surface 1301 and the second inclined surface 1302. Both the first inclined surface 1301 and the second inclined surface 1302 are used to squeeze the adjacent locking block 8, and the flat surface portion 1303 is used to limit the adjacent locking block 8.

[0058] In the above solution, the sides of the sliding carriage 13 and 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 surface portion 1301 on the horizontal plane. After the extrusion plate 14 pushes the sliding carriage 13 to disengage the first inclined surface portion 1301 from the locking block 8, the extrusion plate 14 contacts the extrusion block 9.

[0059] As Figure 1 , Figure 11 and Figure 12 shown, the locking assembly includes: a fixing frame 16 fixedly connected to one of the moving modules 3. The fixing frame 16 is slidably connected with a U-shaped rod 17. A through hole is provided on the 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.

[0060] In the above solution, the portions of the U-shaped rod 17 that slide in the through holes of the fixing frame 16 and the support frame 4 are both set to be cylindrical. Spherical surfaces are provided at both ends of the U-shaped rod 17 to enable the U-shaped rod 17 to smoothly enter the through holes of the fixing frame 16 and the support frame 4. In the initial state, the U-shaped rod 17 is located in the through holes of the fixing frame 16 and the support frame 4.

[0061] When using this device for expansion joint welding, the staff first move the profiled steel to the workbench 1 and adjust the angle of the profiled steel so that the profiled steel is parallel to the support frame 4. Subsequently, the staff start the first electric push rod 401. The telescopic end of the first electric push rod 401 extends to gradually unfold the folding frame 5. 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 of the profiled steel and the anchor bar, and then the first electric push rod 401 is turned off. After that, the anchor bars to be welded are sequentially placed in the grooves of the upper locking block 8 and brought into contact with the grooves of the extrusion block 9. Immediately afterwards, the rotating plate 11 is rotated downward until it is limited by the T-shaped frame 10 and then 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] When the support frame 4 stops rotating, the limit pin 12 is inverted by 180°. Under the action of its own gravity, the limit pin 12 moves downward along the rotating plate 11 and slides out of the limit hole of the T-shaped frame 10. Subsequently, the rotating plate 11 swings downward under the action of its own gravity.

[0066] 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. The support frame 4 drives the parts thereon to move synchronously, so that the anchor bars gradually fit with the section steel. After the anchor bars are fitted with the section steel, the moving module 3 is closed. Subsequently, the staff starts the welding module 2, and the welding module 2 welds the anchor bars one by one. After the welding module 2 finishes 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 retracts and drives the pressing plate 14 to move synchronously. The pressing plate 14 releases the pressing on the pressing block 9 and the sliding frame 13. The pressing block 9 moves forward under the elastic force of the second elastic member thereon until the elastic force of the second elastic member is completely released and then stops. 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 until the elastic force of the third elastic member is completely released and then stops.

[0067] When the pressing block 9, the sliding frame 13 and the limit block 130 stop moving, the pressing block 9 releases the pressing on the anchor bar, and the limit block 130 releases the pressing 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 blocks 8 stop moving, the staff moves the section steel to the right by a certain distance to make the welded anchor bars staggered with the mounting frame 7. Subsequently, the staff starts the moving module 3 to drive the support frame 4 to move forward until the moving module 3 resets to the initial state and then stops. After that, the staff removes the U-shaped rod 17. The U-shaped rod 17 releases the locking of the support frame 4. The staff rotates the support frame 4 in the reverse direction to rotate the support frame 4 back to its original position. After rotating the support frame 4 by 180°, the staff inserts the U-shaped rod 17 into the through holes of the fixing frame 16 and the support frame 4 again to lock the support frame 4.

[0068] During the process of the support frame 4 rotating back to its original position, the rotating plate 11 swings under the action of its own gravity. When the support frame 4 rotates back to its original position, the rotating plate 11 swings back synchronously, and the limit pin 12 resets under the action of its own gravity. Subsequently, the staff starts the first electric push rod 401. The telescopic end of the first electric push rod 401 retracts and resets and drives the folding frame 5 to contract and reset. The above actions are repeated when welding the expansion joint later.

[0069] Embodiment 2: On the basis of Embodiment 1, as Figures 5 - 9As shown in the figure, it further includes a detection component, the number of which is the same as that of the mounting brackets 7, and they are respectively arranged on adjacent mounting brackets 7 for detecting whether the anchor bars are qualified. The detection component includes: a fixed shell 18 fixedly connected to the mounting bracket 7; a first sliding rod 1801 sealingly and slidably connected to the fixed shell 18; a second sliding rod 1802 sealingly and slidably connected to the fixed shell 18, and the length of the first sliding rod 1801 is greater than that of the second sliding rod 1802.

[0070] In the above solution, the fixed shell 18 is located at the lower side of the mounting bracket 7, so that when the anchor bar is placed in the groove of the upper locking block 8, the anchor bar does not contact the fixed shell 18. 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 that of the second sliding rod 1802, so that when the anchor bar is fixed by the locking block 8 and the extrusion block 9, both the first sliding rod 1801 and the second sliding rod 1802 can extend to contact the anchor bar.

[0071] As Figures 7 - 9 shown in the figure, the detection component further includes: a first hydraulic telescopic rod 19 fixedly connected to the mounting bracket 7. A return spring is arranged inside 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. A first oil guide pipe 20 is communicated between the first hydraulic telescopic rod 19 and the fixed shell 18, and the connection part of 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.

[0072] In the above solution, the telescopic end of the first hydraulic telescopic rod 19 is initially in the extended state. Hydraulic oil is injected into both the first hydraulic telescopic rod 19 and the first oil guide pipe 20. The upper part of the sliding frame 13 is used to squeeze the telescopic end of the first hydraulic telescopic rod 19, so as to push out the hydraulic oil in the first hydraulic telescopic rod 19.

[0073] As Figure 7 、 Figure 8 and Figure 10 shown in the figure, the detection component further includes: a second hydraulic telescopic rod 21 fixedly connected to the mounting bracket 7. A return spring is arranged inside the second hydraulic telescopic rod 21. The second hydraulic telescopic rod 21 is fixedly connected and communicated with a second oil guide pipe 22, and the second oil guide pipe 22 is communicated with the first oil guide pipe 20; an indicating block 23 is fixedly connected to the telescopic end of the second hydraulic telescopic rod 21, and a scale is arranged on the T-shaped frame 10.

[0074] In the above solution, hydraulic oil is injected into both the second hydraulic telescopic rod 21 and the second oil guide pipe 22. The cross section of the indicating block 23 is triangular, and the distance that the telescopic end of the second hydraulic telescopic rod 21 drives the indicating block 23 to extend can be judged through the scale on the T-shaped frame 10.

[0075] While the sliding frame 13 and the limiting block 130 move, the second inclined surface portion 1302 contacts the locking block 8 and pushes the locking block 8 to lock the anchor bar, the sliding frame 13 simultaneously pushes the telescopic end of the first hydraulic telescopic rod 19 to contract, 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 housing 18 through the first oil conduit 20. The first sliding rod 1801 and the second sliding rod 1802 move away from each other. During the process of aligning the anchor bar, the first sliding rod 1801 and the second sliding rod 1802 gradually contact the anchor bar. During the process of gradually locking the anchor bar, both the first sliding rod 1801 and the second sliding rod 1802 are limited by the anchor bar, so that the hydraulic oil in the first hydraulic telescopic rod 19 cannot enter the fixed housing 18. Thus, the hydraulic oil in the first hydraulic telescopic rod 19 enters the second hydraulic telescopic rod 21 through the first oil conduit 20 and the second oil conduit 22. The hydraulic oil entering the second hydraulic telescopic rod 21 pushes the telescopic end of the second hydraulic telescopic rod 21 to extend, and the spring in the second hydraulic telescopic rod 21 is compressed. The telescopic end of the second hydraulic telescopic rod 21 drives the indicating block 23 to move upward synchronously.

[0076] After the anchor bar is completely locked, under the action of the spring in the second hydraulic telescopic rod 21, both the first sliding rod 1801 and the second sliding rod 1802 adapt to the position of the anchor bar and respectively abut against 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 both welding surfaces of the anchor bar contact the rotating plate 11, the overall angle of the anchor bar will have a large deviation, increasing the sum of the lengths of the first sliding rod 1801 and the second sliding rod 1802 extending in the fixed housing 18. More hydraulic oil can be contained in the fixed housing 18, and the extending length of the telescopic end of the second hydraulic telescopic rod 21 becomes smaller. Thus, the indicating block 23 is lower than the standard position. At this time, the staff can accurately judge the position of the indicating block 23 through the scale on the T-shaped frame 10. If the indicating block 23 is lower than the standard position, it indicates that the anchor bar is unqualified. If an unqualified anchor bar is detected, after the staff replaces it, welding can continue.

[0077] After welding the qualified anchor bar is completed, the sliding frame 13 releases the extrusion on the telescopic end of the first hydraulic telescopic rod 19. The telescopic end of the first hydraulic telescopic rod 19 resets under the action of the elastic force of its own spring. The telescopic end of the second hydraulic telescopic rod 21 resets under the action of the elastic force of its own spring. The hydraulic oil in the second hydraulic telescopic rod 21 flows back to the first hydraulic telescopic rod 19 through the second oil conduit 22 and the first oil conduit 20. The telescopic end of the first hydraulic telescopic rod 19 resets to pump the hydraulic oil in the fixed housing 18 back into the first hydraulic telescopic rod 19, and the first sliding rod 1801 and the second sliding rod 1802 move back to their original positions.

[0078] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. Structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art without special explanation and limitation.

Claims

1. A welding and fixing device for bridge expansion joints, characterized by comprising: 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 jointly 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 several support rods hinged in sequence. The support rods of the folding frame (5) are all in contact with the support frame (4); A number of clamping components are all arranged on the folding frame (5) and are used to straighten the anchor bars. 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 to an installation frame (7). The installation frame (7) is slidably connected with two locking blocks (8). The installation frame (7) is slidably connected with a pressing block (9); A T-shaped frame (10) fixedly connected to the installation frame (7). The T-shaped frame (10) is limitedly rotatably connected to a rotating plate (11); A triggering component is arranged on all the installation frames (7) and is used to move the locking blocks (8); A locking component is arranged on the moving module (3) and is used to lock the support frame (4); The triggering component includes: Sliding frames (13) with the same number as the installation frames (7), respectively slidably connected to the installation frames (7). A third elastic member is fixedly connected between the sliding frames (13) and the installation frames (7). The sliding frames (13) are fixedly connected with limiting blocks (130). The limiting blocks (130) are used to squeeze and move two adjacent locking blocks (8); A pressing plate (14) slidably connected to the support frame (4). The pressing plate (14) is used to push the sliding frames (13) and the pressing block (9) to move.

2. The welding and fixing device for bridge expansion joints according to claim 1, characterized in that, The rotating plate (11) is composed of a connecting part and a pressing part. The pressing part of the rotating plate (11) is used to limit the anchor bar. In the state where the pressing part of the rotating plate (11) limits the anchor bar, the locking block (8) is located in the middle of the horizontal line segment between the pressing part of the rotating plate (11) and the pressing block (9).

3. A bridge expansion joint welding and fixing device according to claim 1, characterized in that it also Including: Limit pins (12) with the same number as the rotating plates (11), respectively slidably connected to adjacent rotating plates (11). Limit holes are opened on the T-shaped frame (10). The T-shaped frame (10) is used to squeeze the limit pins (12). The limit holes of the T-shaped frame (10) are used to limit the limit pins (12). A first elastic member is fixedly connected between the locking block (8) and the installation frame (7). A second elastic member is fixedly connected between the installation frame (7) and the pressing block (9).

4. A welding and fixing device for bridge expansion joints according to claim 1, characterized in that, The triggering component further includes: A second electric push rod (15) fixedly connected to the support frame (4). The telescopic end of the second electric push rod (15) is fixedly connected to the pressing plate (14).

5. A welding and fixing device for bridge expansion joints according to claim 1, characterized in that, The limiting block (130) is provided with symmetrically distributed first inclined surfaces (1301), second inclined surfaces (1302) and a flat surface portion (1303). The flat surface portion (1303) is located between the first inclined surface (1301) and the second inclined surface (1302). The first inclined surface (1301) and the second inclined surface (1302) are both used to squeeze the adjacent locking blocks (8), and the flat surface portion (1303) is used to limit the adjacent locking blocks (8).

6. A welding and fixing device for bridge expansion joints according to claim 1, characterized in that, The locking assembly includes: A fixing frame (16) fixedly connected to one of the moving modules (3). The fixing frame (16) is slidably connected with 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).

7. A welding and fixing device for a bridge expansion joint according to claim 1, characterized in that It further includes a detection assembly, the number of which is the same as that of the mounting frames (7), and is respectively arranged on adjacent mounting frames (7) for detecting whether the anchor bars are qualified. The detection assembly includes: A fixed shell (18) fixedly connected to the mounting frame (7); A first sliding rod (1801) hermetically and slidably connected to the fixed shell (18); A second sliding rod (1802) hermetically 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).

8. A welding and fixing device for bridge expansion joints according to claim 7, characterized in that, The detection assembly further includes: A first hydraulic telescopic rod (19) fixedly connected to the mounting frame (7). A return spring is arranged inside the first hydraulic telescopic rod (19). The telescopic end of the first hydraulic telescopic rod (19) is on the moving path of the sliding frame (13). A first oil pipe (20) is communicated between the first hydraulic telescopic rod (19) and the fixed shell (18), and the communication part between the fixed shell (18) and the first oil pipe (20) is located between the first sliding rod (1801) and the second sliding rod (1802).

9. A welding and fixing device for bridge expansion joints according to claim 8, characterized in that, The detection assembly further includes: A second hydraulic telescopic rod (21) fixedly connected to the mounting frame (7). A return spring is arranged inside the second hydraulic telescopic rod (21). The second hydraulic telescopic rod (21) is fixedly connected and communicated with a second oil pipe (22), and the second oil pipe (22) is communicated with the first oil pipe (20); An indicating block (23) fixedly connected to the telescopic end of the second hydraulic telescopic rod (21), and a scale is arranged on the T-shaped frame (10).

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