A longitudinal and transverse pre-deformed hydraulic flip welding tire frame and its use method

Abstract

Provided is a longitudinal and transverse pre-deformation hydraulic flip welding cradle and a method for using the same, comprising the following steps: S1, horizontal positioning welding platform S2, assembling crescent plate S3, positioning manual trolley S4, starting longitudinal and transverse pre-deformation hydraulic flip welding cradle S5, hoisting plate unit S6, centering adjustment S7, clamping adjustment S8, and adjusting welding position. The present invention solves the problems that the existing cradle cannot realize longitudinal pre-deformation adjustment, the cradle has high cost, poor adaptability, and low efficiency; it overcomes the problems that the application range of the welding cradle in the prior art is narrow and the longitudinal deformation of the steel bridge plate unit cannot be controlled. The invention is easy to operate, has strong applicability, and has high precision after welding. It is economical, practical, safe and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of welding positioning support for operating and transporting steel bridges, and in particular relates to a longitudinal and transverse pre-deformed hydraulic flip welding frame and a use method thereof. Background Art

[0002] Steel structure bridges have the advantages of light weight, convenient construction, high degree of factory production and resource conservation.

[0003] At present, the plate unit is widely welded by a multi-nozzle welding machine, which has a large welding heat input and obvious longitudinal and transverse deformation of the plate unit after welding. As the basis of the bearing plate unit, the welding frame has the key factors to measure its working performance, including the longitudinal and transverse pre-deformation ability before welding, the multi-angle plate unit welding position adjustment function, and the high adaptability of plate units of various structural sizes.

[0004] The plate unit welding cradle currently used mostly adopts a single-side flip cylinder system to control the flipping of the welding platform, and controls the pressure block hinged to the welding platform through the clamping cylinder system, and presses the edge of the plate unit through the clamping block, so that the plate unit can obtain transverse pre-deformation in the ship position. However, the flip cylinder of this type of plate unit welding cradle has a large tonnage, and requires high rigidity of the cradle. Moreover, it can only participate in the production of plate units with fixed plate width, and cannot achieve longitudinal pre-deformation; at the same time, it is expensive, has poor adaptability, and is inefficient. In this regard, the following improved technical scheme is proposed. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a longitudinal and transverse pre-deformation hydraulic flip welding tire frame and a use method thereof, so as to solve the problems that the existing tire frame cannot realize longitudinal pre-deformation adjustment, has high tire frame cost, poor adaptability and low efficiency.

[0006] The technical solution adopted by the present invention is a method for using a longitudinal and transverse pre-deformed hydraulic flip welding tire frame, comprising the following steps:

[0007] S1. Horizontal positioning of welding platform: Start and adjust the extended length of the symmetrical piston rods of the flip cylinders to make the extended lengths of the piston rods of the symmetrical flip cylinders equal to adjust the welding platform posture to a horizontal state.

[0008] S2. Assemble the crescent plate: arrange the crescent plate with changing elevation curvature in the longitudinal and transverse directions of the welding platform according to the longitudinal and transverse pre-deformation values ​​of the plate unit; the change of the elevation curvature of the crescent plate in the longitudinal and transverse directions is used to achieve the shaped support of the longitudinal and transverse pre-deformation of the plate unit.

[0009] S3. Positioning the manual trolley: according to the width of the plate unit, move the manual trolley to the appropriate position of the welding platform, extend the slider in the manual trolley and insert it into the positioning plate slot on the inner side of the welding platform slideway, so as to position the manual trolley on one side of the welding platform.

[0010] S4. Start the longitudinal and transverse pre-deformation hydraulic flip welding tire frame: so that the piston rods of the clamping cylinder and the centering cylinder are extended to their respective limit positions.

[0011] S5. Hoist the plate unit: hoist the plate unit above the crescent plate of the welding platform, and place one side of the plate unit inside the pressing end of the block of the manual trolley.

[0012] S6. Centering adjustment: Start the centering cylinder, the piston rod of the centering cylinder contracts and drags the hydraulic trolley to move horizontally until the hydraulic trolley and the manual trolley are aligned on both sides of the clamping plate unit.

[0013] S7. Clamping adjustment: Start the clamping cylinders of the hydraulic trolley and the manual trolley simultaneously. The piston rods of the clamping cylinders drive the connecting shaft and the pressure block to move downward linearly until the pressure block clamps the plate unit and fixes it above the crescent plate to achieve pre-deformation of the plate unit.

[0014] S8. Adjust welding position: Start the turning cylinder. The axisymmetric turning cylinder drives the welding platform and the plate unit on it to turn around the fixed axis until the plate unit posture is adjusted to the expected welding position, ready for welding.

[0015] In the above technical solution, further: in step S2, the crescent plate and the welding platform are magnetically connected to each other or bolted to each other.

[0016] In the above technical solution, further: the crescent plate has a magnetic base, and the top of each magnetic base is bolted to a crescent plate body with a changing elevation arc.

[0017] In the above technical solution, further: the crescent plate has a bolted base, which is bolted to the welding platform; and the top of the bolted base is welded and fixedly connected to the crescent plate body.

[0018] In the above technical solution, further: the elevation of the crescent plate body is consistent, and the crescent plate body with consistent elevation can achieve the change of the crescent plate elevation by inserting pads of different thicknesses into the bolted base, thereby realizing the pre-deformed shaping support of the plate unit.

[0019] In the above technical solution, further: the elevations of the crescent plate bodies are inconsistent, and several crescent plate bodies with different elevations can realize the change of the crescent plate elevation, thereby realizing the shaping support of the pre-deformation of the plate unit.

[0020] It also includes a longitudinal and transverse pre-deformation hydraulic flip welding tire frame, which has a welding platform with a crescent plate on the top of the welding platform; a welding posture adjustment mechanism is provided at the bottom of the welding platform, and a manual trolley and a hydraulic trolley with axially symmetrical centripetal linear displacement are respectively provided on both sides of the welding platform; wherein the bottom end of the welding platform is hinged to the fixed end of the centering cylinder, and the execution end of the centering cylinder is hinged to the bottom of the hydraulic trolley, and the hydraulic trolley is dragged to move along the width direction of the welding platform; the manual trolley is also displaced along the width direction of the welding platform and the position of the manual trolley is manually locked; and the manual trolley and the hydraulic trolley are centered and clamped on both sides of the plate unit according to the width of the plate unit; the manual trolley and the hydraulic trolley body are respectively vertically fixed to support and install the clamping cylinder; a pressure block is provided at the vertical execution end of the clamping cylinder; the clamping cylinder drives the pressure block to move downward to clamp the plate unit on the upper end face of the crescent plate.

[0021] In the above technical solution, further: the welding posture adjustment mechanism has tilting cylinders of the same model, same size and axially symmetrically installed in pairs; one of the axisymmetric tilting cylinder piston rods is extended and the other is contracted by the same value to adjust the welding position posture of the welding platform.

[0022] In the above technical scheme, further: the manual trolley and the hydraulic trolley both have a car body, a guide sleeve, a clamping cylinder, a connecting shaft, a pressure block, a wheel axle and a wheel; the clamping cylinder is fixedly installed at the center of the bottom end of the car body; a vertical guide sleeve is provided at the center of the top end of the car body; the vertically upward piston rod of the clamping cylinder is coaxially fixedly connected to the bottom end of the connecting shaft, and the top end of the connecting shaft extends coaxially from the guide sleeve, and the pressure block is fixedly installed at the extended end of the connecting shaft to drive the pressure block to move linearly up and down; the wheel axle is installed on the car body; the wheel is installed on the end of the wheel axle; wherein, a slider sleeve is installed on the top end of the car body of the manual trolley; the slider sleeve is slidably adapted to install the slider; the slider is positioned and plugged into a positioning plate slot on the inner side of the slideway to lock the position of the manual trolley on the welding platform; an articulated seat is provided at the bottom end of the car body of the hydraulic trolley; the articulated seat is articulated to the piston rod execution end of the centering cylinder.

[0023] In the above technical solution, further: the vehicle body is welded from steel plates into a box-type structure.

[0024] In the above technical solution, further: the connecting shaft is coaxially rotated to fit and connect the clamping cylinder piston rod execution end; the connecting shaft shaft body is provided with an axial keyway; an anti-rotation block is fixedly installed on the top of the guide sleeve body; the anti-rotation block is embedded in the matching keyway to prevent the connecting shaft and the pressure block from rotating when they are lifted and lowered linearly.

[0025] In the above technical solution, further: the wheel shaft end is supported by a deep groove ball bearing for rotational installation of the wheel; a retaining spring and a spacer sleeve are respectively provided on the outer side of the deep groove ball bearing shaft end; the retaining spring and the spacer sleeve are used to limit the axial displacement of the deep groove ball bearing.

[0026] In the above technical scheme, further: the welding platform is made of I-beams welded together to form a flat frame structure; steel plate mesh is installed in the hollow parts of adjacent welding platforms; the steel plate mesh is used to facilitate people to stand; the inner side of the I-beam of the welding platform is fixed with a symmetrical slideway by welding with profiles; the wheels of the manual trolley and the hydraulic trolley are adapted to the rolling friction of the slideway.

[0027] In the above technical scheme, further: a swivel seat of an inverted triangle structure is fixedly installed at the center of the bottom end of the welding platform; the bottom end of the swivel seat is hinged to the top end of a support seat with an equilateral triangle structure; a flange plate is provided at the bottom end of the support seat; embedded bolts are installed on the flange plate, and the support seat is fixed to the ground by the embedded bolts; the upper end surface of the flange plate is hinged to the bottom fixing part of the flip cylinder; the piston rod of the flip cylinder is hinged to the outer bottom end of the welding platform.

[0028] The advantages of the present invention compared with the prior art are:

[0029] The present invention relies on symmetrically arranged turning cylinders to adjust the posture of the upper plate unit in the ship position or the right angle position for welding on the welding platform, thereby realizing the multi-angle position adjustment of the tire frame; at the same time, through the centering cylinder, it has the function of longitudinal and transverse welding pre-deformation of plate units with different widths; it can adapt to the production of plate units of various structural sizes; it has high economy, wide adaptability and high construction efficiency.

[0030] The centering clamping of the plate unit in the width direction of the present invention is achieved by a hydraulic trolley and a manual trolley. The centering clamping operation of the plate unit is simple, and the centering clamping is labor-saving, fast and convenient.

[0031] The present invention adopts axisymmetric paired turning cylinders to achieve posture adjustment of the welding platform. Compared with the turning cylinders arranged on one side, the posture adjustment is safer, more stable and more reliable.

[0032] The manual trolley and the hydraulic trolley of the present invention both drive the connecting shaft and the pressure block to move up and down through the clamping cylinder to achieve the clamping of the two sides of the plate unit. The lifting and lowering of the connecting shaft is limited by the anti-rotation block and the keyway to limit the clamping rotation of the connecting shaft and the pressure block. The clamping operation of the pressure block is safe, efficient, firm and reliable.

[0033] 5. The present invention overcomes the problems in the prior art that the application range of the welding cradle is narrow and the longitudinal deformation of the steel bridge plate unit cannot be controlled. It is easy to operate, has strong applicability, high precision after welding, is economical and practical, safe, efficient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a front view of the longitudinal and transverse pre-deformed hydraulic flip welding tire frame of the present invention;

[0035] Figure 2 For the present invention Figure 1 Tire frame pre-deformation clamping use status diagram;

[0036] Figure 3 This is the main view of the use state of the present invention;

[0037] Figure 4 for Figure 3 An enlarged detail view of an embodiment of a middle crescent plate body and a bolted base padded with pads of different thicknesses;

[0038] Figure 5 It is a top view of the present invention in use;

[0039] Figure 6 for Figure 5 A magnified detail view of the local structure;

[0040] Figure 7 for Figure 3 Partial enlarged detail image;

[0041] Figure 8 for Figure 7 Schematic diagram of the middle slide structure;

[0042] Fig. 9 It is the front view of the manual trolley or hydraulic trolley;

[0043] Fig.10 for Fig. 9 Schematic diagram of the rotating installation structure of the middle wheel;

[0044] Fig.11 This is a schematic diagram of the principle structure of the manual trolley clamping;

[0045] Fig.12 This is a schematic diagram of the hydraulic trolley's clamping principle structure;

[0046] Fig.13 is a flow chart of the method of the present invention;

[0047] In the figure: 1-welding platform, 2-crescent plate, 3-manual trolley, 4-hydraulic trolley, 5-swivel seat, 6-support seat, 7-flange plate, 8-embedded bolts, 9-turning cylinder, 10-centering cylinder, 11-plate unit, 12-car body, 13-guide sleeve, 14-clamping cylinder, 15-connecting shaft, 151-keyway; 16-pressure block, 17-wheel axle, 18-anti-rotation block; 19-wheel, 20-slider sleeve, 201-slider, 202-positioning plate slot; 21-articulated seat; 1-1 slideway, 1-2 steel plate mesh; 191-deep groove ball bearing, 192-circlip, 193-spacer. DETAILED DESCRIPTION

[0048] The following will be combined with the attached embodiment of the present invention Figure 1-13, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] (like Fig.13 A method for using a longitudinal and transverse pre-deformed hydraulic flip welding tire frame includes the following steps:

[0050] Step S1, horizontal positioning of the welding platform: start and adjust the symmetrical piston rod extension lengths of the turning oil cylinder 9 to make the piston rod extension lengths of the symmetrical turning oil cylinder 9 equal, so as to adjust the welding platform 1 to a horizontal state, that is, to provide a horizontal positioning reference for the installation of the crescent plate 2.

[0051] Step S2, assembling the crescent plate: arranging the crescent plate 2 with a changing elevation curvature in the longitudinal and transverse directions of the welding platform 1 according to the longitudinal and transverse pre-deformation values ​​of the plate unit 11; the change in the elevation curvature of the crescent plate 2 in the longitudinal and transverse directions is used to achieve the shaped support of the longitudinal and transverse pre-deformation of the plate unit 11.

[0052] like Figure 1 As shown, it is an embodiment of setting an integral arc-shaped crescent plate 2 in the width direction of the welding platform 1, that is, in the transverse direction, to achieve pre-deformation of the plate unit 11 in the width direction, that is, in the transverse direction; Figure 3 As shown, it is an embodiment of longitudinal pre-deformation of the crescent plate 2 with a maximum elevation change difference of h in the length direction of the welding platform 1, i.e., the longitudinal direction.

[0053] In the above embodiment, further: in step S2, the crescent plate 2 and the welding platform 1 are connected as a whole by magnetic attraction or bolt connection. Example

[0054] When the crescent plate 2 is magnetically connected to the welding platform 1: the crescent plate 2 has a magnetic base, preferably: the magnetic base is a strong magnetic base with a knob. The top of each magnetic base is bolted to a crescent plate body with a changing elevation arc. Specifically, the bolted connection between the magnetic base and the crescent plate body is achieved by adding a bolted mounting plate on the top of the magnetic base. The present embodiment adopts a magnetic connection method, especially a strong magnetic base with a knob. On the one hand, it can realize the rapid disassembly and installation of the crescent plate on the welding platform; on the other hand, the number of crescent plates 2 installed on the welding platform 1 is not limited by the number and position of the prefabricated mounting holes on the welding platform 1, and the crescent plate 2 can be arranged at any position on the welding platform 1, thereby realizing the pre-deformation positioning support of different linear plate units 11. Therefore, the magnetic method makes the arrangement of the crescent plate 2 more free and more versatile. Example

[0055] When the crescent plate 2 is bolted together with the welding platform 1, the crescent plate 2 has a bolted base 2-1, and the bolted base 2-1 is bolted to the welding platform 1; the top of the bolted base 2-1 is welded and fixedly connected to the crescent plate body 2-2. The bolted installation method is adopted, which facilitates the bolted disassembly and installation of the crescent plate 2 that matches it according to the change of the pre-deformation linear shape of the plate unit 11, thereby realizing the deformation support of different types of plate units 11 on the welding platform 1, and also realizing the universal and variable shaping support of different types of plate units 11. Furthermore, regarding the elevation embodiment of the crescent plate body 2-2: Example

[0056] (like Figure 4 When the crescent plate body 2-2 has the same elevation, the crescent plate body 2-2 with the same elevation can adjust the elevation of the crescent plate 2 by inserting pads 2-3 of different thicknesses into the bolted base 2-1, thereby realizing the pre-deformation and shaping support of the plate unit 11. When the embodiment of the crescent plate body with the same elevation is adopted, in order to realize the deformation positioning support function of the crescent plates of different elevations on the plate unit 11, it is only necessary to produce pads 2-3 of different thicknesses, and the crescent plate body 2-2 can be mass-produced with the same model, which is beneficial to reduce and control the production cost of the crescent plate 2. Example

[0057] When the elevations of the crescent plate bodies 2-2 are inconsistent, the elevation of the crescent plate 2 can be changed directly through a plurality of crescent plate bodies 2-2 with different elevations, thereby realizing pre-deformed shaping support of different types of plate units 11. The crescent plate bodies 2-2 can be customized and produced in batches according to actual needs and the types of plate units 11, thereby realizing universal and variable shaping support of different types of plate units 11.

[0058] Step S3, positioning the manual trolley: after the manual trolley 3 is moved to a suitable position on the welding platform 1 according to the width of the plate unit 11, the slider 201 in the manual trolley 3 is extended and positioned and inserted into the positioning plate slot 202 inside the slideway 1-1 of the welding platform 1, thereby positioning the manual trolley 3 on one side of the welding platform 1. The position of the manual trolley is determined according to the actual width of the plate unit 11.

[0059] Step S4, start the longitudinal and transverse pre-deformation hydraulic flip welding tire frame: make the piston rods of the clamping cylinder 14 and the centering cylinder 10 extend to their respective limit positions, so as to prepare for the subsequent clamping and centering.

[0060] Step S5, hoisting the plate unit: hoist the plate unit 11 above the crescent plate 2 of the welding platform 1, and insert one side of the plate unit 11 into the inner side of the pressing end of the block 16 of the manual trolley 3, so as to prepare for the subsequent centering and clamping.

[0061] Step S6, centering adjustment: start the centering oil cylinder 10, the piston rod of the centering oil cylinder 10 contracts and drags the hydraulic trolley 4 to move horizontally until the hydraulic trolley 4 and the manual trolley 3 are centered on both sides of the clamping plate unit 11. That is, centering clamping is automatically achieved, which is labor-saving and efficient.

[0062] It can be seen that the present invention has the function of longitudinal and transverse welding pre-deformation of plate units 11 of different widths through the centering cylinder 10; the clamping operation of the hydraulic trolley 4 and the manual trolley 3 can adapt to the production of plate units 11 of various structural sizes; it has high economy, wide adaptability and high construction efficiency. That is, the centering clamping of the plate unit 11 in the width direction of the present invention is achieved through the hydraulic trolley 4 and the manual trolley 3, and the centering clamping operation of the plate unit 11 is simple, and the centering clamping is labor-saving, fast and convenient.

[0063] Step S7, clamping adjustment: synchronously start the clamping oil cylinder 14 of the hydraulic trolley 4 and the manual trolley 3, and the piston rod of the clamping oil cylinder 14 drives the connecting shaft 15 and the pressing block 16 to move downward linearly until the pressing block 16 clamps and constrains the plate unit 11 to fit and fix it above the crescent plate 2, so as to achieve pre-deformation of the plate unit 11. That is, clamping is automatically achieved, and the clamping operation is labor-saving, efficient and convenient.

[0064] Step S8, adjusting the welding position: start the turning cylinder 9, and the axisymmetric turning cylinder 9 drives the welding platform 1 and its upper plate unit 11 to turn around the fixed axis until the posture of the plate unit 11 is adjusted to the expected welding position, ready for welding.

[0065] The present invention relies on symmetrically arranged turning cylinders 9 to adjust the posture of the plate unit 11 on the welding platform 1 in the ship position or the right angle position, thereby realizing the multi-angle position adjustment of the tire frame.

[0066] (like Figure 1 , Figure 2 The present invention also includes a longitudinal and transverse pre-deformation hydraulic flip welding tire frame.

[0067] The longitudinal and transverse pre-deformation hydraulic flip welding frame has a welding platform 1. A crescent plate 2 is provided at the top of the welding platform 1. The curvature change of the crescent plate 2 is used to set the transverse welding pre-deformation of the plate unit 11, and the crescent plates 2 with different longitudinal elevations are combined and arranged to set the longitudinal welding pre-deformation of the plate unit 11. A welding posture adjustment mechanism is provided at the bottom of the welding platform 1. The welding posture adjustment mechanism mainly includes an axisymmetric flip cylinder 9.

[0068] (like Figure 3 As shown in the above embodiment, further: the welding platform 1 is made of I-beams welded together to form a planar frame structure; the material is easily available, the production is easy, the structure is firm and reliable, and it is economical and practical.

[0069] (like Figure 5(as shown) a steel plate mesh 1-2 is installed in the hollowed-out part of the adjacent welding platform 1; the steel plate mesh 1-2 is used to facilitate construction personnel to stand.

[0070] (like Figure 7 , Figure 8 As shown in the figure, the inner side of the I-beam of the welding platform 1 is fixed with a symmetrical slideway 1-1 by welding with a profile; the wheels 19 of the manual trolley 3 and the hydraulic trolley 4 are adapted to the slideway 1-1 by rolling friction. That is, the slideway 1-1 provides a limit guide support for the movement of the trolley to ensure the accuracy of the clamping displacement.

[0071] In the above embodiment, further: the center of the bottom end of the welding platform 1 is fixedly installed with a swivel seat 5 of an inverted triangle structure; the bottom end of the swivel seat 5 is hinged to the top of the support seat 6 of an equilateral triangle structure through a pin and a retaining ring. Among them, after the swivel seat 5 is welded into a component by steel plates, the bottom surface and ear holes are processed as a whole to ensure that the elevation deviation from the bottom surface of each swivel seat 5 to the ear hole is not greater than 1mm, and it is fixed to the flange plate at the bottom end of the welding platform 1 by bolts. After the support seat 6 is welded into a component by steel plates, the ear holes are processed based on the bottom plate as a reference, and self-lubricating bearings can be embedded in the ear holes. After aligning the axis of the ear holes of the four support seats 6, the deviation is not greater than 2mm. The support seat 6 is fixed to the ground by embedded bolts 8, and then hinged to the swivel seat 5 by a pin. On this basis: the bottom end of the support seat 6 is also provided with a flange plate 7; the overall flatness of the flange plate 7 is not greater than 1mm; the flange plate 7 is installed with embedded bolts 8, and the support seat 6 is fixed on the ground by the embedded bolts 8. The upper end surface of the flange plate 7 is hinged to the bottom fixed part of the tilting cylinder 9; the piston rod execution end of the tilting cylinder 9 is hinged to the outer bottom end of the welding platform 1.

[0072] The main improvement of the present invention is that a manual trolley 3 and a hydraulic trolley 4 with axially symmetrical centripetal linear displacement are respectively provided on both sides of the welding platform 1 .

[0073] Among them, the bottom end of the welding platform 1 is hinged to the fixed end of the centering cylinder 10, and the centering cylinder 10 performs the end hinged bottom of the hydraulic trolley 4, and drags the hydraulic trolley 4 to move along the width direction of the welding platform 1. The manual trolley 3 is also displaced along the width direction of the welding platform 1 and the position of the manual trolley 3 is manually locked. And the manual trolley 3 and the hydraulic trolley 4 are centered and clamped on both sides of the plate unit 11 according to the width of the plate unit 11. When in use: the manual trolley 3 relies on manpower to move in the width direction of the welding platform 1, adjusts its position in the width direction of the slide 1-1, and realizes unilateral positioning in the width direction of the plate unit 11. The hydraulic trolley 4 is hingedly connected to the end of the piston rod of the centering cylinder 10 through an articulated seat to realize automatic unilateral positioning of the other side of the width direction of the plate unit 11.

[0074] (like Figure 8 , Fig.10As shown in the figure, on this basis: the manual trolley 3 and the hydraulic trolley 4 are respectively fixed vertically to support and install the clamping cylinder 14; the clamping cylinder 14 is provided with a pressing block 16 at the vertical execution end; the clamping cylinder 14 drives the pressing block 16 to move downward to clamp the plate unit 11 to the upper end surface of the crescent plate 2. When in use: after the plate unit 11 is clamped in the width direction, the clamping cylinder 14 on the trolley is used, and the clamping cylinder 14 drives the connecting shaft 15 and the pressing block 16 described later, and the two sides of the plate unit 11 are clamped tightly against the crescent plate 2, completing the longitudinal and transverse welding pre-deformation of the plate unit 11.

[0075] (like Fig.11 , Fig.12 As shown in the above embodiment, further: the manual trolley 3 and the hydraulic trolley 4 both have a vehicle body 12, a guide sleeve 13, a clamping cylinder 14, a connecting shaft 15, a pressure block 16, a wheel shaft 17 and a wheel 19.

[0076] The center of the bottom end of the car body 12 is fixedly installed with a clamping cylinder 14; the center of the top end of the car body 12 is provided with a vertical guide sleeve 13; specifically, the guide sleeve 13 is welded and connected to the box-type car body 12 as a whole. The vertically upward piston rod of the clamping cylinder 14 is coaxially fixedly connected to the bottom end of the connecting shaft 15, and the top end of the connecting shaft 15 extends coaxially from the guide sleeve 13, and the top end of the connecting shaft 15 is fixedly installed with a pressing block 16 to drive the pressing block 16 to move linearly up and down. The longitudinal section of the pressing block 16 is an L-shaped pressing arm structure.

[0077] On this basis, in order to reduce the cost: in the above embodiment, further: the vehicle body 12 is welded from steel plates into a box-shaped structure. The vehicle body 12 is welded and fixed with a wheel axle 17; and the wheel axle 17 is installed at the end of the wheel axle 17.

[0078] It should be added that: the top of the body 12 of the manual trolley 3 is welded and fixed with a slider sleeve 20; the slider sleeve is a slot structure: the slider sleeve 20 is pulled out and slidably adapted to install a slider 201 in the slot; the welding platform 1 is provided with a number of positioning plate slots 202 at equal intervals. After the slider 201 is extended, it is positioned and plugged into a certain positioning plate slot 202 on the inner side of the slideway 1-1 to lock the manual trolley 3 position on the welding platform 1 (such as Figure 6 As shown). The difference between the manual trolley 3 and the hydraulic trolley 4 is that: the bottom end of the body 12 of the hydraulic trolley 4 is provided with an articulated seat 21; the articulated seat 21 is articulated to the piston rod execution end of the centering cylinder 10.

[0079] To achieve reliable clamping: In the above embodiment, further: the connecting shaft 15 is coaxially rotated and matched to connect the clamping cylinder 14 piston rod execution end; the connecting shaft 15 shaft system is provided with an axial keyway 151; the anti-rotation block 18 is fixedly installed on the top of the guide sleeve 13 sleeve body; the anti-rotation block 18 is inserted into and matched with the keyway 151, and the anti-rotation block 18 and the keyway 151 are matched to prevent the connecting shaft 15 and the pressure block 16 from rotating when they are linearly lifted or lowered.

[0080] In the above embodiment, further: the shaft end of the wheel shaft 17 supports the rotation installation of the wheel 19 through the deep groove ball bearing 191; the outer side of the shaft end of the deep groove ball bearing 191 is respectively provided with a retaining spring 192 and a spacer sleeve 193; wherein the retaining spring 192 axially limits the outer ring of the bearing adapted to the deep groove ball bearing 191, and the spacer sleeve 193 axially limits the inner ring of the bearing adapted to the deep groove ball bearing 191. The retaining spring 192 and the spacer sleeve 193 are used in combination to limit the axial displacement of the deep groove ball bearing 191.

[0081] During use: the manual trolley 3 and the hydraulic trolley 1 of the present invention both drive the connecting shaft 15 and the pressure block 16 to move up and down through the clamping cylinder 14 to achieve the clamping of the two sides of the plate unit 11. The lifting and lowering of the connecting shaft 15 is limited by the anti-rotation block 18 and the keyway 151 to limit the clamping rotation of the connecting shaft 15 and the pressure block 16. The clamping operation of the pressure block 16 is safe, efficient, firm and reliable.

[0082] In the above embodiment, further: the welding posture adjustment mechanism has a pair of tilting oil cylinders 9 of the same model and size and axially symmetrically installed; one piston rod of the axisymmetric tilting oil cylinder 9 is extended and the other piston rod is contracted by the same value to adjust the welding position posture of the welding platform 1. The present invention adopts the axisymmetric pair of tilting oil cylinders 9 to achieve the posture adjustment of the welding platform 1, and the posture adjustment is safer, more stable and reliable than the tilting oil cylinder 9 arranged on one side.

[0083] The working principle of the present invention is as follows: before welding, the plate unit 11 is hoisted onto the welding platform 1 in a horizontal state; first, the manual trolley 3 is positioned, and then the centering cylinder 10 is controlled to contract, and the hydraulic trolley 4 is pulled to press the plate unit 11; then, the clamping cylinder 14 is controlled to contract, so that the plate unit 11 is closely attached to the pre-deformed crescent plate 2; and by setting the longitudinal height difference of the pre-deformed crescent plate 2, after the plate unit 11 is hydraulically clamped, the lateral pre-deformation is ensured, and the longitudinal pre-deformation is also set in the length direction of the plate unit 11. Finally, by controlling the flipping cylinder 9, the plate unit 11 is welded in the ship position or flat angle position in the pre-deformed state.

[0084] From the above description, it can be found that the present invention overcomes the problems of narrow application range of welding cradle and uncontrollable longitudinal deformation of steel bridge plate unit in the prior art, and it is easy to operate, highly applicable and has high precision after product welding.

[0085] In summary, the present invention can realize multi-angle position adjustment of the tire frame; it has the function of longitudinal and transverse welding pre-deformation for plate units of different widths; it can adapt to the production of plate units of various structural sizes; it is highly economical, adaptable, and has high construction efficiency. The centering and clamping operation of the plate unit is simple, and the centering and clamping is labor-saving, quick, and convenient. The posture adjustment is safer, more stable, and more reliable. The clamping operation of the trolley pressure block is safe, efficient, firm, and reliable. The structure is simple, the operation is easy, the use is efficient and labor-saving, the applicability is strong, the product has high precision after welding, and it is safe, stable, efficient, and reliable.

[0086] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A method for using a longitudinal and transverse pre-deformed hydraulic flip welding tire frame, characterized in that: The steps include: S1, horizontal positioning of the welding platform: start and adjust the extended lengths of the symmetrical piston rods of the tilting oil cylinder (9) so that the extended lengths of the piston rods of the symmetrical tilting oil cylinders (9) are equal, so as to adjust the posture of the welding platform (1) to a horizontal state; S2, assembling the crescent plate: arranging crescent plates (2) with varying elevation radians in the longitudinal and transverse directions of the welding platform (1) according to the longitudinal and transverse pre-deformation values ​​of the plate unit (11); the variation of the elevation radians of the crescent plate (2) in the longitudinal and transverse directions is used to achieve shaped support for the longitudinal and transverse pre-deformation of the plate unit (11); S3, positioning the manual trolley: after moving the manual trolley (3) to a suitable position on the welding platform (1) according to the width of the plate unit (11), the slider (201) in the manual trolley (3) is extended and positioned and inserted into the positioning plate slot (202) inside the slideway (1-1) of the welding platform (1), thereby positioning the manual trolley (3) on one side of the welding platform (1); S4, starting the longitudinal and transverse pre-deformation hydraulic flip welding tire frame: so that the piston rods of the clamping cylinder (14) and the centering cylinder (10) are extended to their respective limit positions; S5, hoisting the plate unit: hoisting the plate unit (11) above the crescent plate (2) of the welding platform (1), and inserting one side of the plate unit (11) into the inner side of the pressing end of the block (16) of the manual trolley (3); S6, centering adjustment: start the centering cylinder (10), the piston rod of the centering cylinder (10) contracts and drags the hydraulic trolley (4) to move horizontally until the hydraulic trolley (4) and the manual trolley (3) are centered on both sides of the clamping plate unit (11); S7, clamping adjustment: synchronously start the clamping cylinders (14) of the hydraulic trolley (4) and the manual trolley (3), and the piston rods of the clamping cylinders (14) drive the connecting shaft (15) and the pressing block (16) to move downward linearly until the pressing block (16) clamps and constrains the plate unit (11) to fit and fix it above the crescent plate (2), thereby achieving pre-deformation of the plate unit (11); S8, adjusting the welding position: starting the turning cylinder (9), the axisymmetric turning cylinder (9) drives the welding platform (1) and the upper plate unit (11) thereof to turn around the fixed axis until the posture of the plate unit (11) is adjusted to the expected welding position, and the welding is ready; In step S2, the crescent plate (2) and the welding platform (1) are magnetically connected to each other or bolted to each other; The crescent plate (2) has a magnetic base, and the top of each magnetic base is bolted to a crescent plate body with a variable elevation arc; or the crescent plate (2) has a bolted base (2-1), and the bolted base (2-1) is bolted to the welding platform (1); the top of the bolted base (2-1) is welded and fixedly connected to the crescent plate body (2-2); The crescent plate body (2-2) has a consistent elevation, and the crescent plate body (2-2) with a consistent elevation can achieve a change in the elevation of the crescent plate (2) by inserting pads (2-3) of different thicknesses into the bolted base (2-1); or the crescent plate body (2-2) has an inconsistent elevation, and a plurality of crescent plate bodies (2-2) with different elevations can achieve a change in the elevation of the crescent plate (2); The longitudinal and transverse pre-deformed hydraulic flip welding frame comprises a welding platform (1), the top of the welding platform (1) is provided with a crescent plate (2); the bottom of the welding platform (1) is provided with a welding posture adjustment mechanism; the two sides of the welding platform (1) are respectively provided with a manual trolley (3) and a hydraulic trolley (4) with axially symmetrical centripetal linear displacement; the bottom end of the welding platform (1) is hinged to the fixed end of the centering cylinder (10), the centering cylinder (10) is hinged to the bottom of the hydraulic trolley (4) at the end, and drags the hydraulic trolley (4) to move along the width direction of the welding platform (1); The manual trolley (3) is also displaced along the width direction of the welding platform (1) and the position of the manual trolley (3) is manually locked; and the manual trolley (3) and the hydraulic trolley (4) are aligned and clamped on both sides of the plate unit (11) according to the width of the plate unit (11); the manual trolley (3) and the hydraulic trolley (4) are respectively supported and installed vertically with a clamping cylinder (14); a pressure block (16) is provided at the vertical execution end of the clamping cylinder (14); the clamping cylinder (14) drives the pressure block (16) to move downward to clamp and fix the plate unit (11) on the upper end surface of the crescent plate (2); The manual trolley (3) and the hydraulic trolley (4) both comprise a trolley body (12), a guide sleeve (13), a clamping cylinder (14), a connecting shaft (15), a pressure block (16), a wheel shaft (17) and a wheel (19); the clamping cylinder (14) is fixedly mounted at the center of the bottom end of the trolley body (12); a vertical guide sleeve (13) is provided at the center of the top end of the trolley body (12); a piston rod of the clamping cylinder (14) facing upward is coaxially fixedly connected to the bottom end of the connecting shaft (15), and the top end of the connecting shaft (15) coaxially extends from the guide sleeve (13), and a pressure block (16) is fixedly mounted at the protruding end of the connecting shaft (15) to drive the pressure block (16) to move vertically. The manual trolley (3) is provided with a linear lifting displacement; the wheel shaft (17) is installed on the body (12); the wheel shaft (17) is installed on the shaft end of the wheel shaft (17); wherein a slider sleeve (20) is installed on the top of the body (12) of the manual trolley (3); the slider sleeve (20) is slidably adapted to install a slider (201); the slider (201) is positioned and plugged into a certain positioning plate slot (202) on the inner side of the slideway (1-1) to lock the position of the manual trolley (3) on the welding platform (1); an articulated seat (21) is provided at the bottom end of the body (12) of the hydraulic trolley (4); the articulated seat (21) is articulated to the piston rod execution end of the centering oil cylinder (10); The vehicle body (12) is welded from steel plates into a box-shaped structure; The connecting shaft (15) is coaxially rotated to fit and connect the piston rod execution end of the clamping oil cylinder (14); the connecting shaft (15) is provided with an axial keyway (151); an anti-rotation block (18) is fixedly installed on the top end of the guide sleeve (13); the anti-rotation block (18) is inserted into and fits into the keyway (151) to prevent the connecting shaft (15) and the pressure block (16) from rotating when they are lifted or lowered linearly; The shaft end of the wheel shaft (17) supports the rotational installation of the wheel (19) via a deep groove ball bearing (191); a retaining spring (192) and a spacer sleeve (193) are respectively provided on the outer side of the shaft end of the deep groove ball bearing (191); the retaining spring (192) and the spacer sleeve (193) are used to limit the axial displacement of the deep groove ball bearing (191); The welding posture adjustment mechanism comprises tilting oil cylinders (9) of the same model and size and axially symmetrically installed in pairs; one piston rod of the axially symmetrical tilting oil cylinders (9) is extended and the other piston rod is contracted by the same value to adjust the welding position posture of the welding platform (1).

2. The method for using the longitudinal and transverse pre-deformation hydraulic flip welding tire frame according to claim 1 is characterized in that: The welding platform (1) is formed of a planar frame structure by welding I-beams; steel plate meshes (1-2) are installed at the hollowed-out parts of adjacent welding platforms (1); the steel plate meshes (1-2) are used to facilitate people to stand; a symmetrical slideway (1-1) is fixedly provided on the inner side of the I-beam of the welding platform (1) by welding with a profile; the wheels (19) of the manual trolley (3) and the hydraulic trolley (4) are adapted to the slideway (1-1) by rolling friction.

3. The method for using the longitudinal and transverse pre-deformation hydraulic flip welding tire frame according to claim 1 is characterized by: A swivel seat (5) of an inverted triangle structure is fixedly installed at the center of the bottom end of the welding platform (1); the bottom end of the swivel seat (5) is hingedly connected to the top end of a support seat (6) of an equilateral triangle structure; a flange plate (7) is provided at the bottom end of the support seat (6); embedded bolts (8) are installed on the flange plate (7), and the support seat (6) is fixedly installed on the ground by the embedded bolts (8); the upper end surface of the flange plate (7) is hingedly connected to the bottom fixing portion of the tilting cylinder (9); the piston rod of the tilting cylinder (9) is hingedly connected to the outer bottom end of the welding platform (1).

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