A pillow beam rib plate rigid stability welding tool

Abstract

This application provides a rigid and stable welding fixture for bolster plates, relating to the fields of rail transit and machinery manufacturing. It includes a base and a pair of upright plates mounted on the base. The left upright plate has an opening, and the right upright plate has a receiving groove, the receiving groove being opposite to the opening. A support plate and an auxiliary plate are positioned between the pair of upright plates. A cover plate is located on top of the support plate, and the bolster plate is located at the bottom of the auxiliary plate. One side of the support plate passes through the opening, and the other side of the support plate is located in the receiving groove. A cable is located at the bottom of the support plate, one end of which is connected to the bottom of one side of the support plate, and the other end of which extends along the length of the support plate and passes through the receiving groove. The other end of the cable is wound around a roller. This application has the characteristic of being able to counteract the welding stress generated during welding, thereby improving the welding effect of the bolster plate on the cover plate and preventing product deformation.

Description

Technical Field

[0001] This application relates to the fields of rail transit and machinery manufacturing, and in particular to a rigid and stable welding fixture for sleeper beam stiffeners. Background Technology

[0002] The sleeper beam, used in light rail trains and subways, is a key component connecting and supporting the car body and bogies, and it bears significant alternating loads during use. The sleeper beam mainly consists of a pair of cover plates and stiffening plates located between the cover plates. Welding these stiffening plates significantly improves the overall strength of the sleeper beam.

[0003] Chinese patent document CN217832355U discloses a welding device for a bolster beam, specifically disclosing a support platform, a first clamping assembly, a limiting assembly, and a second clamping assembly. This welding device for the bolster beam can clamp the bolster beam against the support platform to facilitate welding of the stiffening plate.

[0004] In the aforementioned patent, although vertical positioning and limiting between the lower cover plate and the stiffening plate are achieved before welding, there will be a large stress between the lower cover plate and the stiffening plate after welding. When the first clamping assembly, the limiting assembly and the second clamping assembly release the clamping action, a large deformation will still occur between the lower cover plate and the stiffening plate, which will still require a large cost for welding stress relief and forming. Summary of the Invention

[0005] In order to improve the problem of large welding stress and product deformation caused by existing stiffener welding methods, this application provides a rigid and stable welding fixture for the stiffener plate of the pillow beam.

[0006] This application provides a rigid and stable welding fixture for the stiffening plate of a sleeper beam, which adopts the following technical solution:

[0007] A rigid and stable welding fixture for a bolster beam includes a base and a pair of upright plates disposed on the base. An opening is provided on the left upright plate, and a receiving groove is provided on the right upright plate. The receiving groove is disposed opposite to the opening.

[0008] A support plate and an auxiliary plate are provided between the pair of upright plates, with a cover plate on top of the support plate and stiffening plates on bottom of the auxiliary plate;

[0009] One side of the support plate passes through the opening, and the other side of the support plate is located in the receiving groove. A cable is provided at the bottom of the support plate. One end of the cable is connected to the bottom of one side of the support plate, and the other end of the cable extends along the length of the support plate and passes through the receiving groove. A winding roller is provided on the upright plate on the right side, and the other end of the cable is wound around the winding roller.

[0010] By adopting the above technical solution, the auxiliary plate is fixedly set and used to clamp the stiffening plate, while the support plate is movable and used to clamp the cover plate of the bolster beam. By adjusting the distance between the support plate and the auxiliary plate, the stiffening plate can be positioned on the cover plate, which facilitates welding. Furthermore, as the roller is rotated, the other end of the cable winds around it. Since one end of the cable is connected to the bottom of one side of the support plate, and the other end extends from the bottom of the support plate to the other side, the cable, as it continues to wind around the roller, pulls on the support plate, causing it to arch slightly. This causes the cover plate on the support plate to bend. After the cover plate and stiffening plate are welded together, the cable is released from the roller, releasing the pull on the support plate. The support plate and cover plate return to their original shape (i.e., return to a straight state). During the resetting process, the support plate and cover plate exert a pulling force on the weld in the opposite direction, which cancels out the welding stress. This prevents the cover plate from deforming due to the continuous presence of welding stress, effectively improving the rigidity and stability between the cover plate and stiffening plate after welding, resulting in a good welding effect.

[0011] Optionally, a notch is provided at the bottom of one side of the support plate, and a fixing rod is provided in the notch, with the cable wound around the fixing rod;

[0012] The bottom of the support plate is provided with a through groove, which runs through the support plate along its length and is connected to the notch. The cable is located in the through groove.

[0013] The bottom of the receiving groove is provided with a waist hole, and the cable passes through the receiving groove and the waist hole in sequence and is wound around the winding roller.

[0014] By adopting the above technical solution, the fixing rod is set in the notch, the cable is fixed and wound around the fixing rod, and the through groove is connected to the notch, so that the cable can enter the through groove through the notch, then enter the receiving groove through the through groove, and finally pass through the waist hole through the receiving groove and be wound around the winding roller. In this way, the through groove plays a role in accommodating and guiding the cable, preventing the cable from getting tangled with other components. Moreover, the fixing rod is set at a position higher than the bottom height of the support plate. In this way, after the cable pulls on the fixing rod, it can form a downward pulling force on the fixing rod towards its axis, thereby ensuring that the support plate and the cover plate can arch upward.

[0015] Optionally, the support plate is provided with an extension rod on one side of the receiving groove. The extension rod extends to the outside of the upright plate through the waist hole. The end of the extension rod is provided with a roller. The cable is attached to the outer edge of the roller and is in a tensioned state through the roller.

[0016] By adopting the above technical solution, the extension rod can be inverted L-shaped, so that the lowest point of the roller is lower than the bottom height of the support plate. In other words, under the tension of the roller, the cable is set at an angle, which can improve the pulling effect on the fixed rod and improve the decomposition force of the cable in the vertical direction, thereby ensuring that the support plate can arch upward instead of sinking downward.

[0017] Optionally, the winding roller is driven by an electric motor, which is mounted on a vertical plate located on the right side via a bracket.

[0018] By adopting the above technical solution, the electric motor can drive the winding roller more quickly, thereby realizing the pulling effect of the traction rope on the support plate. Moreover, by controlling the output torque of the electric motor, the upward arching amplitude of the support plate can be effectively controlled, preventing excessive deformation of the support plate and cover plate, which would cause deformation of the cover plate.

[0019] Optionally, a support rod is provided on the support plate, the support rod passes through the waist hole and extends to the outside of the upright plate, and the support rod and the extension rod are staggered;

[0020] Each of the two upright plates is equipped with at least one hydraulic cylinder. The hydraulic cylinder on the left upright plate pushes the support plate downward, and the hydraulic cylinder on the right upright plate pushes the support rod downward.

[0021] By adopting the above technical solution, the push rod of the hydraulic cylinder is fixedly connected to the support plate and the support rod. When the push rod of the hydraulic cylinder retracts, the distance between the support plate and the auxiliary plate decreases, allowing the upwardly arched cover plate to contact the rib plate at the bottom of the auxiliary plate, thus facilitating the welding of the rib plate. When the push rod of the hydraulic cylinder extends, the support plate is pushed downward, separating the support plate from the auxiliary plate and preventing contact with the rib plate during the pre-deformation process of the support plate, thereby improving the overall welding accuracy.

[0022] Optionally, a base plate is provided on the base between the two upright plates, with both sides of the base plate extending to the outer sides of the two upright plates respectively, and the plurality of hydraulic cylinders push the support plate to fit against the base plate.

[0023] By adopting the above technical solution, after the stiffening plates are welded, the stiffening plates and cover plates are removed. Then, the hydraulic cylinder pushes the support plate downwards, causing the support plate to fit against the base plate. The base plate is a flat, standard plate. After the support plate is tightly fitted against the base plate under the push of multiple hydraulic cylinders, the support plate will also return to a flat state. In other words, by aligning the base plate, the support plate can be restored to its original state, preventing poor automatic recovery of the support plate after bending. This would otherwise require multiple adjustments to the cable's pulling action when pulling the support plate again, increasing the operational difficulty. After the support plate is restored to its original state by the base plate, the cable only needs to repeat the same operation, effectively improving welding efficiency. Furthermore, during the restoration of the support plate, the cable is loosened, allowing the cable to fully enter the through groove. This ensures reliable fit between the base plate and the support plate, improving the restoration effect of the support plate.

[0024] Optionally, the top of the substrate is provided with a dovetail groove and an inlet, the inlet is connected to the dovetail groove, a plurality of sliders are adaptedly provided in the dovetail groove, the sliders are put into the dovetail groove through the inlet and slide in the dovetail groove, and the top of the slider is provided with a vertical rod.

[0025] The bottom of the support plate is provided with a plurality of threaded holes, which are located above the dovetail groove and extend along the length of the dovetail groove. A threaded rod is screwed into the threaded hole, and the threaded rod is coaxially arranged with the upright. The distance between the threaded rod and the upright is adjustable.

[0026] By adopting the above technical solution, after the cable completes the pulling action on the support plate and causes the support plate to be slightly bent, when it is necessary to adjust the degree of bending of the support plate corresponding to any stiffener, a slider is inserted into the dovetail groove through the inlet, and then a threaded rod is screwed into the corresponding threaded hole. When the slider is slid so that the upright rod on the slider and the threaded rod are in a coaxial state, the threaded rod and the upright rod are pulled, so that the distance between the threaded rod and the upright rod is reduced. In this way, the distance between the base plate and the support plate will also change, thus realizing the downward pulling action on the support plate, reducing the arching amplitude of the support plate at the threaded hole position. The degree of arching of different positions of the support plate can be finely adjusted in the same way, thereby improving the docking accuracy between the cover plate and the stiffener, and thus improving the welding effect of the stiffener on the cover plate.

[0027] Optionally, the axial section of the upright is T-shaped, and a threaded sleeve is fitted on the outer side of the upright. The threaded sleeve is convex in shape with a large inner diameter at the top and a small inner diameter at the bottom. The upper part of the threaded sleeve is provided with an internal thread that matches the threaded rod, and the lower inner diameter of the threaded sleeve is smaller than the upper outer diameter of the upright.

[0028] By adopting the above technical solution, when fine-tuning the arching amplitude of the support plate, after the sliding slider makes the upright and the threaded rod coaxial, the threaded sleeve moves upward. When the upper end of the threaded sleeve contacts the threaded rod, the threaded sleeve is rotated, and the threaded sleeve and the threaded rod are connected by threads. At this time, the threaded sleeve continues to move upward. When the lower part of the threaded sleeve and the variable diameter part of the upper part of the threaded sleeve contact the upper part of the upright, the distance between the threaded sleeve, the upright, and the base plate cannot change because the outer diameter of the upper part of the upright is larger than the inner diameter of the lower part of the threaded sleeve. At this time, rotating the threaded sleeve again will create a pulling effect on the threaded rod and the pull rod, thereby reducing the distance between the support plate and the base plate, and thus realizing the adjustment of the arching amplitude of the support plate.

[0029] Optionally, the top of the support plate is provided with several buckles for detachably fixing the cover plate to the support plate.

[0030] By adopting the above technical solution and using fasteners to lock the cover plate, the locking efficiency of the cover plate on the support plate can be improved, and it is easy to adjust.

[0031] Optionally, the width of the auxiliary plate is smaller than the width of the support plate, and the bottom of the auxiliary plate is provided with a plurality of slots that extend along the width direction of the auxiliary plate. The upper part of the rib plate is adapted to be engaged in the slots.

[0032] By adopting the above technical solution, the top of the stiffener plate and the slot are in a transitional fit, allowing it to be quickly removed from the slot after the bottom of the stiffener plate is welded to the cover plate. The auxiliary plate has a smaller width, which facilitates the welding torch to reach between the stiffener plates, effectively improving the welding effect and making it easier to separate the stiffener plate from the auxiliary plate.

[0033] In summary, this application has the following beneficial effects:

[0034] 1. By applying a downward pulling force towards the axis of the support plate to one side of the bottom of the support plate through a cable, the support plate is arched. At the same time, the cover plate that cannot be supported is deformed, thus reserving the reverse deformation for welding the stiffener plate on the cover plate, and using it to offset the welding stress, preventing the cover plate from deforming after welding, and improving the welding effect.

[0035] 2. The hydraulic cylinder pushes the support plate downward, making it fit tightly against the base plate. This allows the flat base plate to restore and calibrate the support plate, reducing the amount of cable adjustment when supporting and arching the next cover plate, thus improving operational efficiency. Attached Figure Description

[0036] Figure 1 This is an illustrative three-dimensional representation of the present application. Figure 1 ;

[0037] Figure 2 The schematic three-dimensional representation of this application Figure 2 ;

[0038] Figure 3 It is a schematic three-dimensional diagram of the support plate;

[0039] Figure 4 This is a schematic three-dimensional view of the substrate;

[0040] Figure 5 This is a cross-sectional view of the internal structure of the substrate and the support plate;

[0041] In the picture: 1. Base;

[0042] 2. Vertical plate; 21. Opening; 22. Receiving groove; 23. Waist hole; 24. Hydraulic cylinder;

[0043] 3. Support plate; 31. Notch; 32. Fixing rod; 33. Through groove; 34. Extension rod; 35. Roller; 36. Support rod; 37. Threaded hole; 38. Threaded rod; 39. Buckle;

[0044] 4. Auxiliary plate; 40. Card slot;

[0045] 5. Cover plate; 6. Rib plate;

[0046] 7. Cable; 71. Roller; 72. Electric motor; 73. Support frame;

[0047] 8. Substrate; 81. Dovetail groove; 82. Inlet; 83. Slider; 84. Post; 85. Threaded sleeve. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0049] Figure 1 This is an illustrative three-dimensional representation of the present application. Figure 1 , Figure 2 The schematic three-dimensional representation of this application Figure 2 See also Figure 1 and Figure 2A rigid and stable welding fixture for bolster plates is provided for welding the cover plate 5 and bolster plates 6 that constitute the bolster. The welding fixture includes a base 1, on which a pair of upright plates 2, a support plate 3, and an auxiliary plate 4 are provided. The support plate 3 and the auxiliary plate 4 are located between the pair of upright plates 2, with the support plate 3 positioned above the auxiliary plate 4. The upright plate 2 on the left side has a through opening 21, and the upright plate 2 on the right side has a receiving groove 22. The opening of the receiving groove 22 faces the opening 21, and the height of the receiving groove 22 is the same as the height of the opening 21. One side of the support plate 3 passes through the opening 21 and extends to the left side of the upright plate 2 on the left side. The other side of the support plate 3 abuts against the receiving groove 22. The top of the support plate 3 is locked with the cover plate 5 by a buckle 39. The bottom of the auxiliary plate 4 has several slots 40, and bolster plates 6 are provided in the slots 40. The bolster plates 6 and the slots 40 are in a transition fit. The right side of the upright plate 2 is provided with a waist hole 23. The waist hole 23 and the receiving groove 22 extend in the same direction and are connected to each other. The other side of the support plate 3 is provided with a support rod 36. The support rod 36 passes through the receiving groove 22 and the waist hole 23 in sequence. At least one hydraulic cylinder 24 is provided on the left side of the left upright plate 2 and the right side of the right upright plate 2. The push rod of some hydraulic cylinders 24 is connected to the top of one side of the support plate 3, and the push rod of other hydraulic cylinders 24 is connected to the top of the support rod 36.

[0050] Driven by multiple hydraulic cylinders 24, the support plate 3 can reciprocate along the height direction of the vertical plate 2, making the distance between the support plate 3 and the auxiliary plate 4 adjustable. This allows for reliable adjustment of the distance between the cover plate 5 and the stiffening plate 6, facilitating control over the connection state between the cover plate 5 and the stiffening plate 6 and improving the welding effect. The extension direction of the slot 40 is perpendicular to the length direction of the support plate 3, facilitating the insertion and removal of the stiffening plate 6 within the slot 40. Furthermore, the width of the auxiliary plate 4 is smaller than the width of the support plate 3, making it easier for the welding torch to extend between the stiffening plates 6 and facilitate welding of the stiffening plates 6.

[0051] Figure 3 This is a schematic perspective view of the support plate. See also... Figure 3 and combined Figure 1A notch 31 is provided at the bottom of one side of the support plate 3. A fixing rod 32 is provided in the notch 31. A through groove 33 is provided at the bottom of the support plate 3. One end of the through groove 33 is connected to the notch 31, and the other end of the through groove 33 is connected to the receiving groove 22. A cable 7 is provided in the through groove 33. One end of the cable 7 is wound around the fixing rod 32. The other end of the cable 7 passes through the notch 31, the through groove 33, the receiving groove 22 and the waist hole 23 in sequence, and extends to the right side of the right upright plate 2. A winding roller 71 is provided on the right side of the right upright plate 2. The winding roller 71 is driven by a motor 72. The motor 72 is connected to the right upright plate 2 through a bracket 73. The other end of the cable 7 is wound around the winding roller 71 after passing through the waist hole 23. Furthermore, the support plate 3 is provided with an extension rod 34 on one side of the receiving groove 22. The extension rod 34 passes through the waist hole 23 and extends to the outside of the right upright plate 2. The extension rod 34 is staggered with the support rod 36. The end of the extension rod 34 is provided with a roller 35. One end of the cable 7 is wound around the fixed rod 32, and the other end of the cable 7 is wound around the winding roller 71. After both ends of the cable 7 are wound, they are tensioned by the roller 35.

[0052] Hydraulic cylinder 24 actuates, causing the support plate 3 and auxiliary plate 4 to separate. Then, motor 72 actuates, causing the winding roller 71 to rotate forward, causing cable 7 to continuously wind onto the winding roller 71. As cable 7 tightens, it pulls on the fixed rod 32. Since the fixed rod 32 is fixedly connected to the support plate 3, the pull of cable 7 on the fixed rod 32 is also a pull on the support plate 3. Furthermore, the extension rod 34 can be inverted L-shaped, so that the bottom height of the roller 35 connected to the end of the extension rod 34 can be lower than the bottom height of the support plate 3. That is, cable 7 will be in an inclined state. Specifically, cable 7 The height at the connection between the through groove 33 and the notch 31 is higher than the height at the connection between the through groove 33 and the receiving groove 22. Thus, when the cable 7 is tightened and pulls on the support plate 3, the cable 7 will generate a downward traction force at the fixed rod 32, which is directed toward the axis of the support plate 3. The horizontal decomposition of this traction force will pull the two sides of the support plate 3 closer to each other, while the vertical decomposition of this traction force will push the side of the support plate 3 located in the opening 21 to move upward. Ultimately, the support plate 3 will arch upward. Since the cover plate 5 is locked onto the support plate 3 by the buckle 39, the cover plate 5 will arch upward along with the support plate 3.

[0053] Then, the push rod of hydraulic cylinder 24 retracts, reducing the distance between the support plate 3 and the auxiliary plate 4. The reinforcing rib 6 is then inserted into the slot 40. Once the reinforcing rib 6 is in contact with the top of the cover plate 5, welding can begin. After all the reinforcing ribs 6 are welded, the push rod of hydraulic cylinder 24 extends outward, increasing the distance between the support plate 3 and the auxiliary plate 4. Then, motor 72 drives the winding roller 71 to rotate in the opposite direction, causing the cable 7 to unwind from the winding roller 71. This releases the pulling force of the cable 7 on the support plate 3, allowing the support plate 3 and cover plate 5 to return to their original state. During this process, the stress generated during welding is eliminated, preventing deformation of the cover plate 5 and ensuring sufficient rigidity and stability between the welded cover plate 5 and the reinforcing rib 6, effectively improving the welding effect. One side of the support plate 3 is located in the opening 21, and the other side of the support plate 3 is located in the receiving groove 22. The opening 21 penetrates the left vertical plate 2, and the receiving groove 22 is not penetrated. In this way, while ensuring that the hydraulic cylinder 24 can drive the support plate 3 to move up and down, it is easy for the support plate 3 to deform, thereby offsetting the deformation caused by welding and further improving the welding effect.

[0054] Figure 4 This is a schematic perspective view of the substrate. See also... Figure 4 and combined Figure 1 A base plate 8 is provided on the base 1 between two upright plates 2. The two sides of the base plate 8 extend to the outer sides of the two upright plates 2 respectively. Multiple hydraulic cylinders 24 push the support plate 3 to fit against the base plate 8. Since the base plate 8 is in a flat state and serves as a reference plate, after the support plate 3 fits against the base plate 8, the support plate 3 can quickly return to a flat state under the downward pressure of the hydraulic cylinders 24. In this way, when it is necessary to weld the cover plate 5 and the stiffening plate 6 of the same specifications and welding requirements again, the cable 7 can be adjusted at a faster speed. That is, the pulling and arching of the support plate 3 can be completed quickly and accurately, effectively preventing the need for a long time to adjust the pulling force of the cable 7 due to the poor recovery effect of the support plate 3, thus improving the overall welding speed and welding effect.

[0055] Figure 5 This is a cross-sectional view of the internal structure of the substrate and support plate. See also... Figure 5 Combination Figure 1A dovetail groove 81 is provided on the top of the substrate 8, and an inlet 82 is provided on the dovetail groove 81. The slider 83 can be inserted into the dovetail groove 81 through the inlet 82 and slide within the dovetail groove 81. A vertical rod 84 is provided on the top of the slider 83. The axial cross section of the vertical rod 84 is T-shaped. A threaded sleeve 85 is fitted on the outside of the vertical rod 84. The threaded sleeve 85 is an inverted convex shape with a larger upper part and a smaller lower part. The threaded sleeve 85 can slide up and down on the outside of the vertical rod 84. The horizontal end of the vertical rod 84 plays a role in limiting the vertical height of the threaded sleeve 85. That is, when the threaded sleeve 85 is displaced to a certain height, the horizontal end of the vertical rod 84 will interfere with the lower part of the threaded sleeve 85, so that the threaded sleeve 85 cannot continue to move upward. The bottom of the support plate 3 is provided with several threaded holes 37, and at least one threaded hole 37 is provided on both sides of a stiffener 6. When the arch height of the support plate 3 corresponding to any stiffener 6 needs to be adjusted, a threaded rod 38 is screwed into the corresponding threaded hole 37, and then the slider 83 is slid until the column and the threaded rod 38 are coaxial. Then the threaded sleeve 85 is lifted up and screwed onto the threaded rod 38. When the threaded sleeve 85 is rotated to the state limited by the column 84, the threaded sleeve 85 is rotated again. At this time, the distance between the threaded sleeve 85 and the base plate 8 remains fixed. The continuous rotation of the threaded sleeve 85 will form a stretching effect on the threaded rod 38 and the column 84, thereby reducing the distance between the support plate 3 and the base plate 8. In this way, the arch height of the support plate 3 will be reduced, thus completing the local adjustment of the support plate 3. This improves the connection accuracy between the cover plate 5 and the stiffener 6, and the welding effect is also improved.

[0056] When the support plate 3 needs to be restored, the threaded rod 38 needs to be unscrewed from the threaded hole 37, and the sliding part needs to be removed from the inlet 82 to avoid interference between the support plate 3 and the threaded rod 38, the upright rod 84, or the threaded sleeve 85 during the downward movement of the support plate 3. Furthermore, by adjusting the tension of the cable 7, the cable 7 can be kept in the through groove 33, which can prevent the cable 7 from being clamped between the support plate 3 and the base plate 8, ensuring that the support plate 3 can be restored smoothly, thereby improving the subsequent welding efficiency.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rigid and stable welding fixture for a bolster beam, characterized in that, It includes a base (1) and a pair of upright plates (2) disposed on the base (1). The upright plate (2) on the left side is provided with an opening (21), and the upright plate (2) on the right side is provided with a receiving groove (22). The receiving groove (22) is disposed opposite to the opening (21). A support plate (3) and an auxiliary plate (4) are provided between a pair of upright plates (2), a cover plate (5) is provided on the top of the support plate (3), and a stiffening plate (6) is provided on the bottom of the auxiliary plate (4); One side of the support plate (3) is inserted into the opening (21), and the other side of the support plate (3) is located in the receiving groove (22). A cable (7) is provided at the bottom of the support plate (3). One end of the cable (7) is connected to the bottom of one side of the support plate (3), and the other end of the cable (7) extends along the length of the support plate (3) and passes through the receiving groove (22). A winding roller (71) is provided on the upright plate (2) on the right side, and the other end of the cable (7) is wound around the winding roller (71). The support plate (3) has a notch (31) at the bottom of one side, and a fixing rod (32) is provided in the notch (31). The cable (7) is wound around the fixing rod (32). The bottom of the support plate (3) is provided with a through groove (33), the through groove (33) passes through the support plate (3) along the length direction, the through groove (33) is connected to the notch (31), and the cable (7) is located in the through groove (33); The bottom of the receiving groove (22) is provided with a waist hole (23), and the cable (7) passes through the receiving groove (22) and the waist hole (23) in sequence and is wound around the winding roller (71); The support plate (3) is provided with an extension rod (34) on one side of the receiving groove (22). The extension rod (34) extends to the outside of the upright plate (2) through the waist hole (23). The end of the extension rod (34) is provided with a roller (35). The cable (7) is attached to the outer edge of the roller (35) and is in a tensioned state through the roller (35). A support rod (36) is provided on the support plate (3). The support rod (36) passes through the waist hole (23) and extends to the outside of the upright plate (2). The support rod (36) and the extension rod (34) are staggered. Each of the two upright plates (2) is provided with at least one hydraulic cylinder (24). The hydraulic cylinder (24) on the left upright plate (2) pushes the support plate (3) downward, and the hydraulic cylinder (24) on the right upright plate (2) pushes the support rod (36) downward.

2. The rigid and stable welding fixture for the bolster plate of the sleeper beam according to claim 1, characterized in that, The winding roller (71) is driven by an electric motor (72), which is mounted on the upright plate (2) on the right side via a bracket (73).

3. The rigid and stable welding fixture for the bolster plate of the sleeper beam according to claim 1, characterized in that, A base plate (8) is provided on the base (1) between two upright plates (2). The two sides of the base plate (8) extend to the outer sides of the two upright plates (2). Multiple hydraulic cylinders (24) push the support plate (3) to fit against the base plate (8).

4. The rigid and stable welding fixture for the bolster plate of the sleeper beam according to claim 3, characterized in that, The top of the substrate (8) is provided with a dovetail groove (81) and an inlet (82). The inlet (82) is connected to the dovetail groove (81). A plurality of sliders (83) are adapted to be provided in the dovetail groove (81). The sliders (83) are placed into the dovetail groove (81) through the inlet (82) and slide in the dovetail groove (81). The top of the sliders (83) is provided with a vertical rod (84). The bottom of the support plate (3) is provided with a plurality of threaded holes (37). The plurality of threaded holes (37) are located above the dovetail groove (81) and extend along the length direction of the dovetail groove (81). A threaded rod (38) is screwed into the threaded hole (37). The threaded rod (38) is coaxially arranged with the upright (84). The distance between the threaded rod (38) and the upright (84) is adjustable.

5. The rigid and stable welding fixture for the bolster plate of the sleeper beam according to claim 4, characterized in that, The axial section of the upright (84) is T-shaped. A threaded sleeve (85) is fitted on the outer side of the upright (84). The threaded sleeve (85) is convex in shape with a large inner diameter at the top and a small inner diameter at the bottom. The upper part of the threaded sleeve (85) is provided with an internal thread that matches the threaded rod (38). The lower inner diameter of the threaded sleeve (85) is smaller than the upper outer diameter of the upright (84).

6. A rigid and stable welding fixture for a sleeper beam stiffener plate according to any one of claims 1-5, characterized in that, The top of the support plate (3) is provided with several buckles (39), which are used to detachably fix the cover plate (5) to the support plate (3).

7. The rigid and stable welding fixture for the bolster plate of the sleeper beam according to claim 6, characterized in that, The width of the auxiliary plate (4) is smaller than the width of the support plate (3). The bottom of the auxiliary plate (4) is provided with several slots (40). The slots (40) extend along the width direction of the auxiliary plate (4). The upper part of the stiffener (6) is adapted to be fitted into the slots (40).

Images