Welding tool for airport ferry bridge pad pressing plate
By setting up positioning mechanisms with U-shaped frames and circular frames in the welding fixture, the problem of positioning error during the welding of the ferry bridge pad pressure plate was solved, achieving precise positioning and support of the shaft head and shaft tube, and improving the welding quality.
Patent Information
- Application Number
- CN202511412456.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-02-24
AI Technical Summary
In the existing ferry bridge pad plate welding process, the positioning error of the V-block leads to welding error, and the perpendicularity of the axle head and the center line of the pad plate is offset, resulting in weak welding and uneven tire wear.
The welding fixture, which includes a U-shaped frame and a spiral frame, is equipped with a first positioning mechanism and a second positioning mechanism. Through the cooperation of the adjusting component, fixing component, locking component, supporting component and limiting component, the accurate positioning and support of the shaft head and the welded assembly of the shaft tube are ensured.
This effectively solved the coaxiality problem of the bridge housing tube and the pressure plate, reduced welding errors, and improved the quality and stability of the welding of the bridge pressure plate.
Smart Images
Figure CN121551947A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of welding technology for shuttle bridge pad pressure plates, specifically a welding fixture for airport shuttle bridge pad pressure plates. Background Technology
[0002] The existing shuttle bridge pad plate welding uses two V-blocks to support the inner and outer bearing seats of the axle head for positioning. Although the operation is simple, there are errors in the positioning position after the two V-blocks are processed. When the V-blocks are welded or fixed to the welding platform with nuts, there are also welding errors that cause the axle head to be misaligned. Therefore, under the influence of these two precision errors, the position of the subsequent welding pad plate will be misaligned. At the same time, the axle tubes used in the existing shuttle bridges have large differences in the outer dimensions of the axle tubes at the pad plate position, and the pad plate itself has deviations after processing. The existing welding pad plate tooling base plate is fixed. When different axle tubes and pad plates are placed on the tooling, gaps will be generated, resulting in weak welding and a misalignment of the axle head axis with the center line of the pad plate. Ultimately, this leads to uneven tire wear during shuttle vehicle operation. Summary of the Invention
[0003] The purpose of this invention is to provide a welding fixture for airport shuttle bridge pad pressure plates to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a welding fixture for airport shuttle bridge pad pressure plates, comprising a base plate, and further comprising a U-shaped frame and a U-shaped frame disposed on one side of the base plate, wherein the open end of the U-shaped frame is connected to the base plate, and one side of the U-shaped frame is connected to the base plate through two support plates, wherein the U-shaped frame is provided with a first positioning mechanism for positioning the welded assembly of the shaft head and the shaft tube, and the U-shaped frame is provided with a second positioning mechanism for positioning the shuttle bridge support; The first positioning mechanism includes two symmetrically arranged L-shaped plates fixedly connected to the inner wall of the U-shaped frame near the bottom plate. A first connecting plate is fixedly connected to one end of the two L-shaped plates facing each other. Positioning plates are hinged to the opposite sides of the first connecting plate. The U-shaped frame is provided with an adjustment component for adjusting the angle between the two positioning plates. The U-shaped frame is provided with a fixing component for fixing the welded assembly of the shaft head and the shaft tube. The second positioning mechanism includes second connecting plates slidably connected to opposite sides of the U-shaped frame. Two positioning rods are fixedly connected to opposite sides of the two second connecting plates. First springs are sleeved on the side walls of the four positioning rods. The two ends of the four first springs are respectively connected to the second connecting plates and the side walls of the U-shaped frame. The U-shaped frame is provided with a locking component for locking the second connecting plates and a limiting component for radially limiting the ferry bridge support.
[0005] Preferably, the adjustment assembly includes an adjustment plate slidably connected to the U-shaped frame between the first connecting plate and the base plate. Four rotating plates are hinged to the side of the adjustment plate near the two positioning plates, arranged symmetrically in pairs. Two rotating plates on the same side are connected to the positioning plates at the end away from the adjustment plate. The U-shaped frame is provided with a first driving assembly for driving the adjustment plate.
[0006] Preferably, the first driving component includes two symmetrically arranged first T-shaped rods slidably connected to the side of the U-shaped frame near the bottom plate. One end of the two first T-shaped rods is connected to an adjusting plate, and a first threaded rod is rotatably connected between the two first T-shaped rods. The first threaded rod is threadedly connected to the U-shaped frame, and one end is connected to the adjusting plate.
[0007] Preferably, the fixing component includes two mutually symmetrical second T-shaped rods slidably connected to the side of the U-shaped frame away from the bottom plate. A pressure plate is fixedly connected to one end of the two second T-shaped rods near the first connecting plate. An arc-shaped groove is opened on the side of the pressure plate away from the second T-shaped rods. A second threaded rod is rotatably connected between the two second T-shaped rods. The second threaded rod is threaded to the U-shaped frame and one end is connected to the pressure plate.
[0008] Preferably, the locking assembly includes a square plate fixedly connected to the side of the U-shaped frame near the second connecting plate. A square hole is provided on the side of the square plate away from the bottom plate. A locking plate is slidably connected to the square hole. An inclined groove is provided on the side of the locking plate near the U-shaped frame. A second spring is fixedly connected to the bottom wall of the square hole. The end of the second spring away from the bottom wall is connected to the locking plate. A pull rod is slidably connected to the side of the square plate near the bottom plate. One end of the pull rod is connected to the locking plate.
[0009] Preferably, the U-shaped frame is provided with a support assembly for supporting the positioning of the ferry bridge support. The support assembly includes support rods fixedly connected to the four corners of the U-shaped frame, a support plate slidably connected between the four support rods, a third threaded rod rotatably connected to the side of the base plate near the U-shaped frame, a threaded tube threadedly connected to the side wall of the third threaded rod, one end of the threaded tube being connected to the support plate, and a fixing ring fixedly connected to the side wall of the third threaded rod.
[0010] Preferably, the limiting component includes a T-shaped limiting pin, and the U-shaped frame, the support plate and the base plate are all provided with insertion holes for inserting the T-shaped limiting pin. The base plate is provided with a clamping component for clamping the T-shaped limiting pin.
[0011] Preferably, the clamping assembly includes two sliding plates slidably connected to the side of the base plate away from the U-shaped frame. The two sliding plates are symmetrically arranged about the T-shaped limiting pin. One side of each of the two sliding plates is hinged to a hinge plate via a torsion shaft. The ends of the two hinge plates away from the sliding plates are connected to clamping plates via a telescopic assembly. The ends of the two clamping plates near the T-shaped limiting pin are rounded. The end of the T-shaped limiting pin near the two clamping plates is provided with an annular groove. The base plate is provided with a second driving assembly for driving the two clamping plates.
[0012] Preferably, the telescopic assembly includes a telescopic cavity formed on the side wall of the hinge plate near the abutment plate. The telescopic cavity is slidably connected to a telescopic plate. Two telescopic rods are fixedly connected to the side of the telescopic plate near the abutment plate. The ends of the two telescopic rods away from the telescopic plate are connected to the abutment plate. A third spring is sleeved on the side wall of the two telescopic rods. The two ends of the two third springs are respectively connected to the telescopic plate and the telescopic cavity.
[0013] Preferably, the second drive assembly includes two symmetrically arranged mounting plates fixedly connected to the base plate near the abutment plate. Two guide rods are fixedly connected between the two mounting plates. Two sliding plates are slidably connected to the two guide rods. A double-ended lead screw is rotatably connected between the two guide rods. The two sliding plates are threaded to the double-ended lead screw. One end of the double-ended lead screw passes through the mounting plate and is fixedly connected to a rotating disk.
[0014] Compared with the prior art, the beneficial effects of the present invention are: The welding fixture for airport shuttle bridge pads of the present invention, through the setting of a first positioning mechanism and a second positioning mechanism, and by utilizing the cooperation of support components and limiting components, effectively solves the problems of incomplete fit between the bridge shell shaft tube and the pad and the deviation of the perpendicularity between the shaft head axis and the center line of the pad. Thus, during the welding process of shuttle bridge pads and other accessories, the coaxiality of the positioning position of the welding pads can be guaranteed, the error after welding the welding pads can be reduced, and the quality of welding airport shuttle bridge pads can be improved. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the first positioning mechanism of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the adjustment component and the first drive component of the present invention; Figure 4 This is a schematic diagram of the clamping component structure of the present invention; Figure 5 This is a schematic diagram showing the positional relationship between the support component and the U-shaped frame of the present invention; Figure 6 This is a schematic diagram of the second positioning mechanism and locking component structure of the present invention; Figure 7 This is a schematic diagram of the locking component structure of the present invention; Figure 8 This is a schematic diagram of the T-shaped limiting pin structure of the present invention; Figure 9 for Figure 4 Enlarged view of point A in the middle; Figure 10 This is a schematic diagram showing the final positioning of the airport shuttle bridge pad pressure plate of the present invention.
[0016] In the diagram: 1. Base plate; 2. U-shaped frame; 3. U-shaped frame; 4. Support plate; 501. L-shaped plate; 502. First connecting plate; 503. Positioning plate; 601. Second connecting plate; 602. Positioning rod; 603. First spring; 701. Adjusting plate; 702. Rotating plate; 801. First T-shaped rod; 802. First threaded rod; 901. Second T-shaped rod; 902. Pressing plate; 903. Arc groove; 904. Second threaded rod; 1101. Square plate; 1102. Square hole; 1103. Locking plate; 1104. Inclined groove; 1105. Second spring; 1106, pull rod; 1201, support rod; 1202, support plate; 1203, third threaded rod; 1204, threaded tube; 1205, fixing ring; 1301, T-shaped limit pin; 1302, insertion hole; 1401, sliding plate; 1402, hinge plate; 1403, abutting plate; 1404, annular groove; 1501, telescopic cavity; 1502, telescopic plate; 1503, telescopic rod; 1504, third spring; 1601, mounting plate; 1602, guide rod; 1603, double-ended lead screw; 1604, rotating disk. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Example 1 Please see Figures 1-10 The figure shows a welding fixture for airport shuttle bridge pad pressure plate, including a base plate 1, and a U-shaped frame 2 and a U-shaped frame 3 disposed on one side of the base plate 1. The open end of the U-shaped frame 3 is connected to the base plate 1. One side of the U-shaped frame 2 is connected to the base plate 1 through two support plates 4. The U-shaped frame 2 is provided with a first positioning mechanism for positioning the welded assembly of the shaft head and the shaft tube. The U-shaped frame 3 is provided with a second positioning mechanism for positioning the shuttle bridge support. The first positioning mechanism includes two symmetrically arranged L-shaped plates 501 fixedly connected to the inner wall of the back-shaped frame 2 near the bottom plate 1. A first connecting plate 502 is fixedly connected to one end of the two L-shaped plates 501. Positioning plates 503 are hinged to the opposite sides of the first connecting plate 502. The back-shaped frame 2 is provided with an adjustment component for adjusting the angle between the two positioning plates 503. The back-shaped frame 2 is provided with a fixing component for fixing the welded assembly of the shaft head and the shaft tube. The second positioning mechanism includes second connecting plates 601 slidably connected to opposite sides of the U-shaped frame 3. Two positioning rods 602 are fixedly connected to opposite sides of the two second connecting plates 601 respectively. First springs 603 are sleeved on the side walls of the four positioning rods 602. The two ends of the four first springs 603 are respectively connected to the second connecting plates 601 and the side walls of the U-shaped frame 3. The U-shaped frame 3 is provided with a locking component for locking the second connecting plates 601 and a limiting component for radially limiting the ferry bridge support. It should be noted that by setting up the first and second positioning mechanisms, and by utilizing the cooperation of the support components and the limiting components, the problems of incomplete fit between the bridge housing shaft tube and the pressure plate, and the deviation of the perpendicularity between the shaft head axis and the center line of the pressure plate are effectively solved. This ensures the coaxiality of the positioning position of the welding pressure plate of the ferry bridge during the welding process of accessories such as the ferry bridge pressure plate, reduces the error after welding the ferry bridge pressure plate, and thus improves the welding quality of the airport ferry bridge pressure plate.
[0019] Please see Figure 2 and Figure 3 The adjustment assembly shown in the figure includes an adjustment plate 701 slidably connected to the U-shaped frame 2 between the first connecting plate 502 and the base plate 1. Four rotating plates 702 are hinged to the side of the adjustment plate 701 near the two positioning plates 503, and two rotating plates 702 located on the same side are connected to the positioning plates 503 at the end away from the adjustment plate 701. The U-shaped frame 2 is provided with a first driving assembly for driving the adjustment plate 701. It should be noted here that the angle between the two positioning plates 503 can be adjusted by adjusting the settings of the components, thereby adapting to the positioning of different models of shaft heads and shaft tubes after welding.
[0020] Please see Figure 2 and Figure 3 The first driving component shown in the figure includes two symmetrically arranged first T-shaped rods 801 that are slidably connected to the side of the loop frame 2 near the base plate 1. One end of the two first T-shaped rods 801 is connected to the adjusting plate 701. A first threaded rod 802 is rotatably connected between the two first T-shaped rods 801. The first threaded rod 802 is threaded to the loop frame 2 and one end is connected to the adjusting plate 701. It should be noted that the first drive component is used to move the adjustment plate 701, thereby enabling the rotation of the two rotating plates 702.
[0021] Please see Figure 1 and Figure 2 The fixing components shown in the figure include two mutually symmetrical second T-shaped rods 901 that are slidably connected to the side of the U-shaped frame 2 away from the base plate 1. A pressure plate 902 is fixedly connected to one end of the two second T-shaped rods 901 near the first connecting plate 502. An arc-shaped groove 903 is provided on the side of the pressure plate 902 away from the second T-shaped rods 901. A second threaded rod 904 is rotatably connected between the two second T-shaped rods 901. The second threaded rod 904 is threaded to the U-shaped frame 2 and one end is connected to the pressure plate 902. It should be noted here that the fixing component is used to fix the shaft head and the shaft tube after welding.
[0022] Please see Figure 6 and Figure 7 The locking assembly shown in the figure includes a square plate 1101 fixedly connected to the side of the U-shaped frame 3 near the second connecting plate 601. A square hole 1102 is provided on the side of the square plate 1101 away from the bottom plate 1. A locking plate 1103 is slidably connected to the square hole 1102. A slanted groove 1104 is provided on the side of the locking plate 1103 near the U-shaped frame 3. A second spring 1105 is fixedly connected to the bottom wall of the square hole 1102. The end of the second spring 1105 away from the bottom wall is connected to the locking plate 1103. A pull rod 1106 is slidably connected to the side of the square plate 1101 near the bottom plate 1. One end of the pull rod 1106 is connected to the locking plate 1103. It should be noted here that the locking component is used to lock and limit the second connecting plate 601, thereby causing the positioning rod 602 to move away from the ferry bridge support.
[0023] Please see Figure 1 and Figure 5 The U-shaped frame 3 shown in the figure is provided with a support assembly for supporting the positioning of the ferry bridge support. The support assembly includes support rods 1201 fixedly connected to the four corners of the U-shaped frame 3. A support plate 1202 is slidably connected between the four support rods 1201. A third threaded rod 1203 is rotatably connected to the side of the base plate 1 near the U-shaped frame 3. A threaded tube 1204 is threadedly connected to the side wall of the third threaded rod 1203. One end of the threaded tube 1204 is connected to the support plate 1202. A fixing ring 1205 is fixedly connected to the side wall of the third threaded rod 1203. It should be noted here that the support components are used to achieve the support and positioning of the ferry bridge supports.
[0024] Please see Figure 1 and Figure 8The limiting components shown in the figure include a T-shaped limiting pin 1301. The U-shaped frame 3, the support plate 1202 and the base plate 1 are all provided with insertion holes 1302 for inserting the T-shaped limiting pin 1301. The base plate 1 is provided with a clamping component for clamping the T-shaped limiting pin 1301. It should be noted here that the limit component is used to achieve radial limit of the ferry bridge support.
[0025] Please see Figure 4 and Figure 9 The clamping assembly shown in the figure includes two sliding plates 1401 slidably connected to the side of the base plate 1 away from the U-shaped frame 3. The two sliding plates 1401 are symmetrically arranged about the T-shaped limiting pin 1301. A hinge plate 1402 is hinged to one side of the two sliding plates 1401 through a torsion shaft. A clamping plate 1403 is connected to the end of the two hinge plates 1402 away from the sliding plates 1401 through a telescopic assembly. The end of the two clamping plates 1403 near the T-shaped limiting pin 1301 has rounded corners. An annular groove 1404 is opened at the end of the T-shaped limiting pin 1301 near the two clamping plates 1403. The base plate 1 is provided with a second driving assembly for driving the two clamping plates 1403. It should be noted here that the clamping component is used to clamp and limit the T-type limit pin 1301, thereby ensuring the stability of the T-type limit pin 1301 in use.
[0026] Please see Figure 4 and Figure 9 The telescopic assembly shown in the figure includes a telescopic cavity 1501 opened on the side wall of the hinge plate 1402 near the abutment plate 1403. The telescopic cavity 1501 is slidably connected to the telescopic plate 1502. Two telescopic rods 1503 are fixedly connected to the side of the telescopic plate 1502 near the abutment plate 1403. The ends of the two telescopic rods 1503 away from the telescopic plate 1502 are connected to the abutment plate 1403. The side walls of the two telescopic rods 1503 are fitted with third springs 1504. The two ends of the two third springs 1504 are respectively connected to the telescopic plate 1502 and the telescopic cavity 1501. It should be noted here that the telescopic component is designed to provide elastic retraction force for the abutment plate 1403.
[0027] Please see Figure 4 and Figure 9The second drive assembly shown in the figure includes two symmetrically arranged mounting plates 1601 fixedly connected to the base plate 1 near the abutment plate 1403. Two guide rods 1602 are fixedly connected between the two mounting plates 1601. Two sliding plates 1401 are slidably connected to the two guide rods 1602. A double-ended lead screw 1603 is rotatably connected between the two guide rods 1602. The two sliding plates 1401 are respectively threaded to the double-ended lead screw 1603. One end of the double-ended lead screw 1603 passes through the mounting plate 1601 and is fixedly connected to a rotating disk 1604. It should be noted here that the second drive component facilitates the movement of the two sliding plates 1401 towards or away from each other.
[0028] In this scheme: Working principle: When welding the pressure plate of the airport shuttle bridge, the axle head and the welded axle tube are first placed in the U-shaped frame 2, and the axle head is placed on two positioning plates 503 arranged in a "V" shape. Then, by rotating the second threaded rod 904, the thread meshing transmission between the second threaded rod 904 and the U-shaped frame 2 and the guiding action of the two second T-shaped rods 901 are used to push the pressure plate 902 closer to the axle head. As the pressure plate 902 continues to move, when the arc groove 903 on the side wall of the pressure plate 902 abuts against the axle head, the rotation of the second threaded rod 904 can be stopped, thereby realizing the positioning and fixing of the welded axle head and the welded axle tube. After the shaft head and shaft tube are welded together, the ferry bridge support can be placed on the support plate 1202, and the machining hole on the side wall of the ferry bridge support is aligned with the T-shaped limit pin 1301. Then, by pulling the pull rod 1106, the locking plate 1103 is pulled into the square hole 1102, thereby releasing the locking plate 1103 from locking the second connecting plate 601. At this time, under the elastic force of the first spring 603, the two positioning rods 602 on one side of the second connecting plate 601 will be pushed into the machining hole on the side wall of the ferry bridge support, thus forming the positioning of the ferry bridge support. Furthermore, during the positioning of the ferry bridge support, by rotating the fixed ring 1205, the third threaded rod 1203 is driven to rotate. Then, under the threaded meshing transmission action of the third threaded rod 1203 and the threaded tube 1204 and the guiding action of the four support rods 1201, the support plate 1202 moves closer to the ferry bridge support. When the support plate 1202 abuts against the ferry bridge support, the rotation of the fixed ring 1205 can be stopped. Thus, the support and positioning of the ferry bridge support is achieved by utilizing the supporting action of the support plate 1202. Before moving the support plate 1202, the T-shaped limiting pin 1301 passes sequentially through the U-shaped frame 3, the ferry bridge support, the support plate 1202, and the base plate 1. Then, by rotating the rotating disk 1604, the double-ended lead screw 1603 is driven to rotate. Subsequently, through the threaded engagement transmission between the double-ended lead screw 1603 and the two sliding plates 1401, and the guiding action of the two guide rods 1602, the two sliding plates 1401 are pushed to move closer to each other. During the process of moving closer to each other, the abutment plates 1403 at one end of the two hinge plates 1402 will move synchronously. When the two inclined abutment plates 1403 abut against the annular groove 1404 on the side wall of the T-shaped limiting pin 1301, the two abutment plates 1403 will be pushed closer to each other and rotate under the abutment force, and the T-shaped limiting pin 1301 will be pushed closer to the bottom plate 1, so that one end of the T-shaped limiting pin 1301 abuts against the side wall of the U-shaped frame 3. After the T-shaped limiting pin 1301 is inserted and tightened, during the process of moving the support plate 1202 closer to the ferry bridge support, the ferry bridge support can move vertically on the axis of the T-shaped limiting pin 1301. This effectively solves the problems of incomplete fit between the bridge housing shaft tube and the pad plate and the deviation of the perpendicularity between the shaft head axis and the center line of the pad plate. At this time, the welding of accessories such as the ferry bridge pad plate can be carried out. Therefore, by setting the first positioning mechanism and the second positioning mechanism, and by utilizing the cooperation of the support component and the limiting component, the coaxiality of the positioning position of the ferry bridge welding pad plate is ensured, while the error after welding the ferry bridge pad plate is reduced, thereby improving the welding quality of the airport ferry bridge pad plate.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A welding fixture for airport shuttle bridge pad plates, comprising: Base plate (1); Its characteristic is that it further includes: A U-shaped frame (2) and a U-shaped frame (3) are provided on one side of the base plate (1). The open end of the U-shaped frame (3) is connected to the base plate (1). One side of the U-shaped frame (2) is connected to the base plate (1) through two support plates (4). The U-shaped frame (2) is provided with a first positioning mechanism for positioning the welded assembly of the shaft head and the shaft tube. The U-shaped frame (3) is provided with a second positioning mechanism for positioning the ferry bridge support. The first positioning mechanism includes two L-shaped plates (501) that are symmetrically arranged and fixedly connected to the inner wall of the back-shaped frame (2) near the bottom plate (1). A first connecting plate (502) is fixedly connected to one end of the two L-shaped plates (501) facing each other. Positioning plates (503) are hinged to the two sides of the first connecting plate (502). The back-shaped frame (2) is provided with an adjustment component for adjusting the angle between the two positioning plates (503). The back-shaped frame (2) is provided with a fixing component for fixing the welded assembly of the shaft head and the shaft tube. The second positioning mechanism includes a second connecting plate (601) slidably connected to the opposite sides of the U-shaped frame (3). Two positioning rods (602) are fixedly connected to the opposite sides of the two second connecting plates (601). The side walls of the four positioning rods (602) are fitted with first springs (603). The two ends of the four first springs (603) are respectively connected to the second connecting plate (601) and the side wall of the U-shaped frame (3). The U-shaped frame (3) is provided with a locking component for locking the second connecting plate (601) and a limiting component for radially limiting the ferry bridge support.
2. The welding fixture for airport shuttle bridge pad pressure plates according to claim 1, characterized in that: The adjustment assembly includes an adjustment plate (701) slidably connected to the U-shaped frame (2) between the first connecting plate (502) and the base plate (1). The adjustment plate (701) is hinged to four rotating plates (702) arranged symmetrically in pairs on one side near the two positioning plates (503). Two rotating plates (702) on the same side are connected to the positioning plates (503) at the end away from the adjustment plate (701). The U-shaped frame (2) is provided with a first driving assembly for driving the adjustment plate (701).
3. The welding fixture for airport shuttle bridge pad pressure plates according to claim 2, characterized in that: The first drive assembly includes two symmetrically arranged first T-shaped rods (801) that are slidably connected to the side of the loop frame (2) near the base plate (1). One end of the two first T-shaped rods (801) is connected to the adjustment plate (701). A first threaded rod (802) is rotatably connected between the two first T-shaped rods (801). The first threaded rod (802) is threaded to the loop frame (2) and one end is connected to the adjustment plate (701).
4. The welding fixture for airport shuttle bridge pad pressure plates according to claim 3, characterized in that: The fixing assembly includes two mutually symmetrical second T-shaped rods (901) slidably connected to the side of the U-shaped frame (2) away from the base plate (1). A pressure plate (902) is fixedly connected to one end of the two second T-shaped rods (901) near the first connecting plate (502). An arc groove (903) is opened on the side of the pressure plate (902) away from the second T-shaped rods (901). A second threaded rod (904) is rotatably connected between the two second T-shaped rods (901). The second threaded rod (904) is threaded to the U-shaped frame (2) and one end is connected to the pressure plate (902).
5. The welding fixture for airport shuttle bridge pad pressure plates according to claim 4, characterized in that: The locking assembly includes a square plate (1101) fixedly connected to the side of the U-shaped frame (3) near the second connecting plate (601). A square hole (1102) is provided on the side of the square plate (1) away from the bottom plate (1). A locking plate (1103) is slidably connected to the square hole (1102). A slanted groove (1104) is provided on the side of the locking plate (1103) near the U-shaped frame (3). A second spring (1105) is fixedly connected to the bottom wall of the square hole (1102). One end of the second spring (1105) away from the bottom wall is connected to the locking plate (1103). A pull rod (1106) is slidably connected to the side of the square plate (1101) near the bottom plate (1). One end of the pull rod (1106) is connected to the locking plate (1103).
6. The welding fixture for airport shuttle bridge pad pressure plates according to claim 5, characterized in that: The U-shaped frame (3) is provided with a support assembly for supporting the positioning of the ferry bridge support. The support assembly includes support rods (1201) fixedly connected to the four corners of the U-shaped frame (3). A support plate (1202) is slidably connected between the four support rods (1201). A third threaded rod (1203) is rotatably connected to the side of the base plate (1) near the U-shaped frame (3). A threaded tube (1204) is threadedly connected to the side wall of the third threaded rod (1203). One end of the threaded tube (1204) is connected to the support plate (1202). A fixing ring (1205) is fixedly connected to the side wall of the third threaded rod (1203).
7. A welding fixture for airport shuttle bridge pad pressure plates according to claim 6, characterized in that: The limiting component includes a T-shaped limiting pin (1301). The U-shaped frame (3), the support plate (1202) and the base plate (1) are all provided with insertion holes (1302) for inserting the T-shaped limiting pin (1301). The base plate (1) is provided with a clamping component for clamping the T-shaped limiting pin (1301).
8. A welding fixture for airport shuttle bridge pad pressure plates according to claim 7, characterized in that: The clamping assembly includes two sliding plates (1401) slidably connected to the side of the base plate (1) away from the U-shaped frame (3). The two sliding plates (1401) are symmetrically arranged about the T-shaped limiting pin (1301). A hinge plate (1402) is hinged to one side of the two sliding plates (1401) through a torsion shaft. A clamping plate (1403) is connected to one end of the two hinge plates (1402) away from the sliding plates (1401) through a telescopic assembly. The end of the two clamping plates (1403) near the T-shaped limiting pin (1301) has a rounded corner. An annular groove (1404) is opened at one end of the T-shaped limiting pin (1301) near the two clamping plates (1403). The base plate (1) is provided with a second driving assembly for driving the two clamping plates (1403).
9. A welding fixture for airport shuttle bridge pad pressure plates according to claim 8, characterized in that: The telescopic assembly includes a telescopic cavity (1501) opened on the side wall of the hinge plate (1402) near the abutment plate (1403). The telescopic cavity (1501) is slidably connected to a telescopic plate (1502). Two telescopic rods (1503) are fixedly connected to the side of the telescopic plate (1502) near the abutment plate (1403). The ends of the two telescopic rods (1503) away from the telescopic plate (1502) are connected to the abutment plate (1403). A third spring (1504) is sleeved on the side wall of the two telescopic rods (1503). The two ends of the two third springs (1504) are respectively connected to the telescopic plate (1502) and the telescopic cavity (1501).
10. A welding fixture for airport shuttle bridge pad pressure plates according to claim 9, characterized in that: The second drive assembly includes two symmetrically arranged mounting plates (1601) fixedly connected to the base plate (1) near the abutment plate (1403). Two guide rods (1602) are fixedly connected between the two mounting plates (1601). Two sliding plates (1401) are slidably connected to the two guide rods (1602). A double-ended lead screw (1603) is rotatably connected between the two guide rods (1602). The two sliding plates (1401) are threadedly connected to the double-ended lead screw (1603). One end of the double-ended lead screw (1603) passes through the mounting plate (1601) and is fixedly connected to a rotating disk (1604).