A type of car body welding equipment

Abstract

This invention provides a vehicle compartment assembly and welding device, comprising: a frame, on which a bottom plate clamping structure is mounted, the bottom plate clamping structure being slidably connected to the frame along the length of the vehicle compartment, including multiple first drive sources, each first drive source being connected to a first clamping member, the first clamping member being used to clamp the bottom plate of the vehicle compartment; a side plate fixing structure, the side plate fixing structure including multiple side plate conveying rollers for transporting side plates; multiple second drive sources, each second drive source being connected to a second clamping assembly, the second clamping assembly being used to clamp the side plates of the vehicle compartment; a conveying structure, the conveying structure including a chain for adjusting the position of the bottom plate of the vehicle compartment and two sprockets; and a lifting assembly, the lifting assembly being used to push the assembled vehicle compartment out and detach it from the conveying structure.

Description

Technical Field

[0001] The present invention relates to the technical field of carriage welding, and more particularly to a carriage assembly welding device. Background Art

[0002] The traditional method for manufacturing a dump truck carriage is that workers use an aluminum alloy to measure the side panels of the vehicle body frame according to dimensions. By means of manual use of a tape measure, scribing, etc., the welding positions are found. Stable diagonal braces are installed inside the carriage to keep it from deforming. Within the allowable tolerance range, it is a qualified product; for the intermediate position where the deformation is not at the joint, a sledgehammer is directly used to strike the deformed area with heavy force. For the joint, a flame baking method is adopted. After the temperature reaches the specified empirical temperature, a sledgehammer is then used to strike with heavy force. This manufacturing method has the following disadvantages: the instantaneous noise of the sledgehammer exceeds 120 decibels, and the high noise will affect the hearing of workers; in addition, the work efficiency is low, the accuracy does not meet the standard, and the defective rate is high.

[0003] Therefore, the inventor proposes a carriage assembly welding device to solve the above technical problems. Summary of the Invention

[0004] The problem solved by the present invention is that manual use of a sledgehammer to strike the deformed area will cause noise pollution, and manual operation has low work efficiency, the accuracy does not meet the standard, and the defective rate is high.

[0005] To solve the above problems, the present invention provides a carriage assembly welding device, including: a frame, on which a bottom plate pressing structure is installed. The bottom plate pressing structure is slidably connected to the frame along the length direction of the carriage, and includes a plurality of first driving sources. The first driving sources are connected to first pressing members, and the first pressing members are used to press the bottom plate of the carriage; a side plate fixing structure, which includes a plurality of side plate conveying rollers for transporting side plates; a plurality of second driving sources, the second driving sources are connected to second pressing assemblies, and the second pressing assemblies are used to press the side plates of the carriage; a conveying structure, which includes a chain and two sprockets for adjusting the position of the bottom plate of the carriage; a lifting assembly, which is used to lift out the assembled carriage.

[0006] Compared with existing technologies, the technical effects achieved by this solution are as follows: A bottom plate clamping mechanism is used to clamp the bottom plate of the carriage, and a conveying structure transports the bottom plate via sprockets; a side plate fixing structure is used to clamp the side plates of the carriage, and multiple side plate conveying rollers transport the side plates; the carriage assembly adopts an inverted positioning method, and manual control of the opening and closing of the aforementioned drive source is sufficient to clamp the bottom plate and side plates of the carriage. The equipment positioning is accurate and reliable. Welding is then performed using existing welding methods, while a lifting assembly pushes the assembled carriage out, and a chain removes the assembled carriage from the conveying structure and transports it to the next workstation for welding. This method offers a high degree of automation and is more efficient than manual operation in existing technologies.

[0007] In this embodiment, the base plate clamping structure further includes: a guide rail base assembly; a traveling vehicle body, the traveling vehicle body being slidably connected to the guide rail base assembly; the traveling vehicle body includes a first column assembly, a hydraulic cylinder is mounted on the first column assembly, and a cylinder clamping block is connected to the output end of the hydraulic cylinder.

[0008] The technical effect of adopting this technical solution is as follows: the main body of the bottom plate pressing structure includes a traveling vehicle body, which can slide along the guide rail base assembly. The guide rail base assembly is arranged along the length direction of the carriage. The first column assembly includes two first columns and a first crossbeam set between the two first columns. The hydraulic cylinder is installed on the first crossbeam and drives the hydraulic cylinder pressing block to move up and down along the height direction of the carriage so that the hydraulic cylinder pressing block presses the carriage bottom plate. The setting of the traveling vehicle body allows the above-mentioned hydraulic cylinder pressing block to move to any position along the length direction of the carriage, and can press the carriage bottom plate at any position to adapt to carriage bottom plates of different length specifications.

[0009] In this embodiment, the side plate fixing structure further includes: a second column group, the second column group including a fixed beam; a lifting beam, the lifting beam being vertically slidably connected to the second column group, the lifting beam being connected to a lifting drive assembly; a roller support for mounting the side plate conveying roller, the roller support being mounted on the lifting beam; and a second pressing assembly including a first pressing seat, the first pressing seat being mounted on the lifting beam, and a second pressing seat, the second pressing seat being mounted on the fixed beam.

[0010] The technical effect of adopting this technical solution is as follows: the lifting beam can be vertically slidably connected to the second column group along the height direction of the carriage to adapt to carriage side panels of different height specifications; the height of the fixed beam remains fixed, while the height of the lifting beam is changed by the lifting drive assembly to adapt to carriage side panels of different height specifications; the roller support is used to install the aforementioned side panel conveying rollers, which are used to transport the carriage side panels, and the roller support is also set on the lifting beam, which can move with the movement of the lifting beam; finally, the carriage side panels are pressed together by multiple first pressing seats and multiple second pressing seats, so that the carriage side panels and the bottom plate can be welded reasonably.

[0011] In this embodiment, the lifting drive assembly includes a motor, the motor is driven by a first lead screw, a lifting seat is slidably connected to the first lead screw, and the lifting seat is fixedly connected to the lifting beam.

[0012] The technical effect of adopting this technical solution is that the lifting drive component is mainly driven by a screw and nut structure. Since the lifting beam is relatively long along the length of the carriage, multiple screw and nut structures are required to drive the entire lifting beam to slide up and down along the second column. Each screw and nut structure can provide a part of the lifting force required by the lifting beam.

[0013] In this embodiment, multiple contour-following clamping blocks are also fixedly installed on the fixed beam.

[0014] The technical effect of adopting this technical solution is that the contour-following clamping block is adapted to the shape of the corner between the car floor and the side panel. The end of the contour-following clamping block facing the corner between the car floor and the side panel has an inclined surface and an arc surface, which is adapted to the shape of the corner.

[0015] In this embodiment, a vehicle width adjustment structure is also installed on the frame. The vehicle width adjustment structure includes a positioning base plate, and a width adjustment plate is slidably connected to the positioning base plate.

[0016] The technical effect of adopting this technical solution is that the width specifications of the car vary depending on the width of the car body. In order to expand the scope of application of this invention, a car width adjustment structure is installed on the frame, specifically a positioning base plate. A width adjustment plate is slidably installed on the positioning base plate, and the side panels of the car body are installed on the width adjustment plate. By changing the distance between the width adjustment plate and the positioning base plate, the width of the car body can be adjusted for welding different car body sizes.

[0017] In this embodiment, the two sprockets include a conveyor sprocket and a driven sprocket. The driven sprocket is coaxially connected via a second drive shaft. The multiple conveyor sprockets are connected via chain drive. The conveyor sprocket is coaxially connected to a third drive source. The lifting assembly includes a fourth drive source. The output shaft of the fourth drive source is connected to a lifting shaft. The lifting shaft is connected to a lifting frame for lifting the assembled cargo compartment.

[0018] The technical effect of adopting this technical solution is that the third drive source, preferably a motor, drives the conveyor sprocket and the driven sprocket to rotate. Multiple conveyor sprockets are connected by a conveyor chain to realize the chain drive. The driven sprocket drives the car floor to adjust and calibrate, so that the car floor is in the right position so that the floor pressing structure can press it.

[0019] In this embodiment, a width adjustment assembly is also installed on the frame. The width adjustment assembly includes a plurality of second lead screws and third lead screws arranged along the width direction of the carriage. The second lead screws are slidably connected to contoured support blocks for supporting the corners of the carriage panels. The third lead screws are slidably connected to roller seats.

[0020] The technical effect of adopting this technical solution is that the width specifications of the car vary depending on the size of the car body. In order to expand the scope of application of this invention, a width adjustment component is added to the frame. Specifically, the width adjustment component adopts a screw and nut assembly. The contour support block and roller seat are adjusted by the screw and nut assembly. The contour support block can be used to support the corner between the car body floor and the side plate to make the welding of the car body floor and the side plate more reasonable. The roller seat is used to transport the car body side plate.

[0021] In this embodiment, the frame includes a base platform, on which multiple base columns are installed, and base beams are installed between the multiple base columns. The base platform is fixedly installed on the ground by a fixing connector.

[0022] The technical effect of adopting this technical solution is that the frame, including the aforementioned components, provides a reliable feasibility benchmark for the entire equipment.

[0023] In this embodiment, a manual operation platform is also installed on the frame. The manual operation platform includes multiple ladders in stepped sections, and a safety door is installed at the entrance of the ladders.

[0024] The technical benefits of this solution are that the safety door can be closed at any time when the equipment is not in use, preventing unauthorized personnel from entering. The ladder allows workers to climb to the platform containing the aforementioned structure to perform corresponding operations and complete the required tasks.

[0025] The advantages of the above invention are: 1. The invention does not require manual diagonal bracing and welding, and has a clamping mechanism.

[0026] 2. This invention uses a set of frequency converters and rotary encoders to control dimensions with precision, ensuring the accuracy of the product.

[0027] 3. This invention eliminates the need for the traditional method of hammering with a sledgehammer during the packing operation. Instead, it uses hydraulic clamping and lifting, which reduces the physical exertion of workers and lowers labor intensity.

[0028] 4. This invention eliminates the need for manual pushing; the motor chain automatically transfers the device to the next workstation, reducing the difficulty of operation for workers.

[0029] 5. This invention provides a fixed and precise guarantee for the dimensions inside the carriage, which is more accurate than the traditional ruler method.

[0030] 6. This invention enables the simultaneous production of multiple vehicle models on the same production line, achieving flexible operations. Attached Figure Description

[0031] Figure 1 This is a general structural diagram of the present invention.

[0032] Figure 2 This is a top view of the present invention.

[0033] Figure 3 This is the left view of the present invention.

[0034] Figure 4 This is a schematic diagram of the vehicle body of the present invention.

[0035] Figure 5 This is a schematic diagram of the side plate fixing structure of the present invention.

[0036] Figure 6 This is a schematic diagram of the base plate clamping structure of the present invention.

[0037] Figure 7 This is a schematic diagram of the vehicle width adjustment structure of the present invention.

[0038] Figure 8 This is a schematic diagram of the width adjustment component of the present invention.

[0039] Figure 9 This is a schematic diagram of the base platform of the present invention.

[0040] Figure 10 This is a schematic diagram of the manual operation platform of the present invention.

[0041] Explanation of reference numerals in the attached drawings: 101. Trolley guide rail base; 102. Guide rail base clamping block; 103. Safety limit switch; 104. Trolley guide rail; 105. Slider; 106. Trolley guiding assembly; 107. Trolley motor assembly; 108. Vertical support column; 109. Horizontal beam column; 110. Clamping and fixing assembly; 111. Hydraulic cylinder; 112. Cylinder clamping block; 201. Second column; 202. Lifting and guiding assembly; 203. Guide rail; 204. 205. Side plate conveyor motor assembly; 206. Side plate conveyor chain; 207. Side plate conveyor roller; 208. Roller bearing housing; 209. Roller support; 2000. First clamping seat; 210. First guide post; 211. Guide seat; 212. Mounting seat; 213. Limiting plate; 214. First hydraulic cylinder; 215. Second clamping seat; 216. Contouring clamping block; 217. Lifting drive assembly; 220. First drive shaft; 221. Second bearing with seat; 222. Lifting seat; 223. First lifting platform; 301. Positioning base plate; 302. Width adjustment plate; 303. Step platform one; 401. Lifting frame; 403. Chain guard; 404. Second drive shaft; 405. Lifting shaft; 406. Gear guard; 407. Driven sprocket; 408. Conveyor sprocket; 409. Conveyor chain; 410. Gear motor; 411. Lifting assembly; 412. Second hydraulic cylinder; 501. Motor assembly; 502. Third drive shaft; 503. Second lifting platform; 504. Second lead screw; 505, Third lead screw; 506, Contouring support block; 507, Slide rail cover; 508, Second slider; 509, Second slide rail; 512, Roller assembly one; 513, Roller assembly two; 601, Base platform; 602, Base column; 603, Base beam; 605, Fixed connector; 701, Operating platform column; 702, Platform pedal; 703, Guardrail; 704, Ladder one; 705, Ladder two; 706, Safety door; 707, Ladder three. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following embodiments, for ease of description, the length direction of the carriage is designated as the X-axis, the width direction as the Y-axis, and the height direction as the Z-axis, as indicated in the accompanying drawings.

[0043] [First Embodiment]

[0044] A type of car body welding equipment, reference Figure 1-10, including: a frame, on which a bottom plate pressing structure is installed. The bottom plate pressing structure is slidably connected to the frame along the length direction of the carriage, and includes a plurality of first driving sources. The first driving sources are connected with first pressing members, and the first pressing members are used to press the bottom plate of the carriage; a side plate fixing structure, the side plate fixing structure includes a plurality of side plate conveying rollers 206 for transporting side plates; a plurality of second driving sources, the second driving sources are connected with second pressing components, and the second pressing components are used to press the side plates of the carriage; a conveying structure, the conveying structure includes a chain and two sprockets for adjusting the position of the bottom plate of the carriage; a lifting component 411, and the lifting component 411 is used to lift the assembled carriage out of the conveying structure.

[0045] In this embodiment, the carriage is assembled in an inverted manner, that is, when installed, the horizontal height of the carriage bottom plate is equal to the horizontal height of the highest point of the carriage side plates. The carriage bottom plate and the two carriage side plates together form a "mouth" shape with a notch, and the direction of this notch is set towards the bottom of the frame, that is, the ground.

[0046] The horizontal height of the bottom plate pressing structure is higher than the horizontal height where the carriage bottom plate is located, specifically manifested as at least 2 first driving sources. Preferably, the first driving source is a hydraulic cylinder 111. The output end of the hydraulic cylinder 111 is connected with an oil cylinder pressing block 112. The carriage bottom plate is pressed through the action of the oil cylinder pressing block 112. The moving direction of the oil cylinder pressing block 112 is to move up and down along the Z-axis direction. And in order to ensure that the pressures of the two oil cylinder pressing blocks 112 on the carriage bottom plate act evenly on the carriage bottom plate, the positions of the two hydraulic cylinders 111 are symmetrically arranged about the central axis of the conveying structure; in addition, since the carriage bottom plate has a certain length in the X-axis direction, only pressing a certain position on the carriage bottom plate will cause uneven stress; therefore, the bottom plate pressing structure is arranged to slide along the X-axis direction, so that the oil cylinder pressing block 112 presses at different positions of the carriage along the X-axis, ensuring the uniformization of the acting force of the oil cylinder pressing block 112 on the carriage bottom plate.

[0047] The side carriage fixing structure, the number of side carriage fixing structures is two, which are arranged at the positions on both sides and below the bottom plate pressing structure. Each side carriage fixing structure includes a plurality of side plate conveying rollers 206. The plurality of side plate conveying rollers 206 are evenly arranged along the X-axis direction, and the carriage side plates are transported by the rotation of the side plate conveying rollers 206. The plurality of second driving sources are evenly arranged along the X-axis direction, so that when the second driving sources drive the second pressing components to move, the side plates of the carriage are pressed. The moving direction of the second pressing components is to move along the Y-axis direction. Preferably, the pressing components can be pressing blocks.

[0048] Through the actions of the above-mentioned oil cylinder pressing block 112 and the second pressing components, the carriage bottom plate and the carriage side plates are pressed against each other respectively, which can ensure welding by the existing technology in the follow-up.

[0049] The conveying structure includes a chain and two sprockets. The chain is used to adjust and align the car floor, facilitating the clamping of the floor structure. After assembly, the assembled car is lifted out using the lifting assembly 411. Then, the chain is used to remove the assembled car from the conveying structure and transport it to the next workstation for welding.

[0050] [Second Embodiment] Reference Figure 1-10 The base plate clamping structure further includes: a guide rail base assembly; a traveling vehicle body, the traveling vehicle body being slidably connected to the guide rail base assembly; the traveling vehicle body includes a first column assembly, on which a hydraulic cylinder 111 is installed, and the output end of the hydraulic cylinder 111 is connected to a cylinder clamping block 112.

[0051] In this embodiment, the guide rail base assembly specifically includes a trolley guide rail base 101 and a trolley guide rail 104 mounted on the trolley guide rail base 101. Multiple guide rail base clamping blocks 102 are installed on the trolley guide rail 104, and the function of the guide rail base clamping blocks 102 is to guide the trolley to slide along the trolley guide rail 104. There are two trolley guide rails 104, located on both sides of the conveying structure. Furthermore, to ensure that the trolley body can slide back and forth on the guide rail without detaching, safety limiters 103 are provided on both sides of the trolley guide rail 104.

[0052] The traveling vehicle body includes a slider 105, a traveling trolley guide assembly 106, and a traveling trolley motor assembly 107. The slider 105 and the traveling trolley guide assembly 106 facilitate the sliding of the traveling trolley along the traveling trolley guide rail 104; while the traveling trolley motor assembly 107 provides the power for the traveling trolley to slide along the guide rail. In addition, the traveling vehicle body also includes vertical support columns 108, crossbeam columns 109, clamping and fixing assembly 110, hydraulic cylinders 111, and cylinder clamping blocks 112. Each traveling trolley guide rail 104 is provided with a vertical support column 108, and a crossbeam column 109 is connected between two opposite vertical support columns 108. A hydraulic cylinder 111 is installed on the crossbeam column 109 through the clamping and fixing assembly 110. The output shaft of the hydraulic cylinder 111 is equipped with a cylinder clamping block 112, which is used to clamp the bottom plate of the vehicle body. The aforementioned clamping and fixing assembly 110 can be fixed using fasteners such as screws. Preferably, two hydraulic cylinders 111 are provided on each crossbeam column 109, and the hydraulic cylinders 111 are symmetrically arranged about the central axis of the crossbeam column 109 to ensure that the force is uniform when the cylinder clamping block 112 acts on the base plate.

[0053] [Third Embodiment] Reference Figure 1-10The side plate fixing structure further includes: a second column group, the second column group including a fixed beam; a lifting beam, the lifting beam being vertically slidably connected to the second column group, the lifting beam being connected to a lifting drive assembly 217; a roller support 208 for mounting the side plate conveying roller 206, the roller support 208 being mounted on the lifting beam; and a second pressing assembly including a first pressing seat 209, the first pressing seat 209 being mounted on the lifting beam, and a second pressing seat 215, the second pressing seat 215 being mounted on the fixed beam.

[0054] In this embodiment, there are two second column groups, which are arranged on both sides of the conveying structure. The second column group mainly includes a fixed beam and a lifting beam arranged along the X-axis. The lifting beam is located below the fixed beam. In order to adapt to the side panels of the carriage at different heights, the lifting beam is vertically slidably connected to the second column 201. Specifically, a guide rail 203 is installed on the second column 201, and a lifting guide assembly 202 is fixedly installed on the lifting beam. The lifting guide assembly 202 and the guide rail 203 cooperate to allow the lifting beam to slide up and down along the second column 201.

[0055] The aforementioned multiple side plate conveying rollers 206 are mounted on the lifting beam. To facilitate the installation of the side plate conveying rollers 206, roller bearing seats 207 and roller supports 208 are installed on the lifting beam. The multiple side plate conveying rollers 206 are connected to each other by a side plate conveying chain 205. One of the side plate conveying rollers 206 is coaxially connected to a side plate conveying motor assembly 204, which drives the side plate conveying roller 206 to rotate.

[0056] The second clamping assembly includes multiple first clamping seats 209 evenly arranged on the lifting beam. The clamping surface of the first clamping seat 209 facing the side panel of the carriage is preferably flat. The first clamping seat 209 is driven by a second drive source, preferably a first hydraulic cylinder 214. In order to ensure that the first clamping seat 209 can move along the Y-axis, a first guide post 210, a guide seat 211, a mounting seat 212, and a limiting plate 213 are provided. The mounting seat 212 is installed on the lifting beam and has a through hole for the guide seat 211 and the output end of the hydraulic cylinder to pass through. One end of the guide seat 211 and one end of the hydraulic cylinder output end are fixedly connected to the first clamping seat 209.

[0057] The second clamping seat 215 is mounted on the fixed beam. Similarly, in order to ensure that the second clamping seat 215 can move along the Y-axis, the first guide post 210, guide seat 211, mounting seat 212 and limiting plate 213 mentioned above are also provided, which will not be described in detail here.

[0058] [Fourth Embodiment] Reference Figure 1-10The lifting drive assembly 217 includes a motor, which is driven by a first lead screw. A lifting seat 222 is slidably connected to the first lead screw, and the lifting seat 222 is fixedly connected to the lifting beam.

[0059] In this embodiment, in order for the lifting beam to move up and down along the Z-axis, a lifting drive assembly 217 is used to drive the lifting beam to move up and down along the Z-axis. The lifting drive assembly 217 specifically includes a motor, which is connected to the first lifting machine 223 via a first transmission shaft 220. The specific transmission connection method can be a worm gear engagement. The main body of the lifting machine adopts a lead screw and nut structure, wherein the first lead screw is the lead screw structure in the lead screw and nut structure, and the lifting seat 222 is the nut structure in the lead screw and nut structure. In order to reduce the rotational resistance of the lead screw, a second bearing 221 is provided to reduce the rotational resistance of the lead screw, so that the lifting seat 222 can slide up and down along the first lead screw.

[0060] [Fifth Embodiment] Reference Figure 1-10 Multiple contour-following clamping blocks 216 are also fixedly installed on the fixed beam.

[0061] In this embodiment, since the height of the fixed beam is similar to the height of the connection between the side panel and the floor of the carriage, and the connection between the side panel and the floor of the carriage is basically an arc-shaped process, the corresponding pressing part also adopts a contour pressing block 216 adapted to the above shape. Specifically, the contour pressing block 216 facing the side panel of the carriage includes a vertical surface, an inclined surface, and an arc transition part. The use of the above-mentioned vertical surface, inclined surface, and arc transition part can adapt to the transition at the connection between the side panel and the floor of the carriage, so that the side panel and the floor of the carriage are pressed more tightly.

[0062] [Sixth Embodiment] Reference Figure 1-10 The frame is also equipped with a vehicle width adjustment structure, which includes a positioning base plate 301 and a width adjustment plate 302 slidably connected to the positioning base plate 301.

[0063] Because different carriage floor panels have different lengths along the Y-axis, when pressing carriage floor panels of different specifications, it is necessary to adjust the distance between the two sets of positioning base plates 301 to accommodate the width of the carriage floor panels. Specifically, a width adjustment structure is installed on the frame, which includes two sets of positioning base plates 301, respectively located on both sides of the conveying structure. Preferably, each set contains five positioning base plates 301, with the middle one being the longest and the other four having the same length. The position of the positioning base plates 301 along the Y-axis can be adjusted using a width adjustment plate 302. The width adjustment plate 302 causes the two sets of positioning base plates 301 to move in opposite directions to increase the width of the carriage floor panels that can be accommodated, or to move relative to each other to decrease the width of the carriage floor panels that can be accommodated, thus meeting the different length requirements of different carriage floor panels along the Y-axis.

[0064] [Seventh Embodiment] Reference Figure 1-10 The two sprockets include a conveyor sprocket 408 and a driven sprocket 407. The driven sprocket 407 is coaxially connected via a second drive shaft 404. The multiple conveyor sprockets 408 are connected via a conveyor chain 409. The conveyor sprockets 408 are coaxially connected to a third drive source. The lifting assembly 411 includes a fourth drive source. The output shaft of the fourth drive source is connected to a lifting shaft 405. The lifting shaft 405 is connected to a lifting frame 401 for lifting the assembled cargo box.

[0065] To ensure the car body floor is transported to the designated position for subsequent pressing of the car body side panels and floor, a conveyor chain 409 transports the car body floor to the designated position. The preferred third drive source is a geared motor 410. The forward and reverse rotation of the geared motor 410 drives the conveyor sprocket 408 to rotate in both directions, causing the conveyor chain 409 to rotate accordingly. When the conveyor chain 409 has not transported the car body floor to the designated position, the geared motor 410 can rotate forward or reverse, using the second drive shaft 404 and the driven sprocket 407 to transport the car body floor to the designated position, thus providing an adjustment and calibration function. After the car body side panels and floor are assembled, a lifting frame 401 is provided to lift the assembled car body. Since the lifting frame 401 needs to be lifted periodically, a gear guard 406, a chain guard 403, and a base assembly for the lifting frame 401 are used to reduce the vibration caused by the up-and-down movement of the lifting frame 401. This ensures that the service life of the aforementioned conveyor sprocket 408, driven sprocket 407, conveyor chain 409, and lifting frame 401 body is extended, thereby reducing the replacement rate of the aforementioned components.

[0066] The lifting assembly 411 specifically includes a fourth drive source, preferably a second hydraulic cylinder. The output end of the second hydraulic cylinder drives the lifting shaft 405 to move, so that the lifting shaft 405 drives the lifting frame 401 to lift. Then, the reduction motor 410 drives the conveyor chain 409 to operate, so that the assembled car body is removed from the above-mentioned equipment and can be transported to the next work station, thereby completing the transportation of the car body side panels and car body floor panels and the transportation after assembly.

[0067] [Eighth Embodiment] Reference Figure 1-10 The frame is also equipped with a width adjustment assembly, which includes a plurality of second lead screws 504 and third lead screws 505 arranged along the width direction of the carriage. The second lead screws 504 are slidably connected to a contour support block 506 for supporting the corner of the carriage panel; the third lead screws 505 are slidably connected to a roller seat.

[0068] In this embodiment, since different carriage floor plates have different lengths along the Y-axis, a width adjustment component is needed to adjust the width when pressing carriage floor plates of different specifications.

[0069] Specifically, the width adjustment component includes a motor assembly 501, which is connected to a second lifting mechanism 503 via a third transmission shaft 502. The second lifting mechanism 503 drives a second lead screw 504 to rotate via a worm gear, causing the lead screw 504 to move and slide the contour support block 506 along the Y-axis. To facilitate the sliding of the contour support block 506, a second slide rail 509, a second slider 508, and a slide rail cover 507 are provided, forming a guide assembly to ensure the accuracy of the contour support block 506 when moving in the Y-axis direction. The second slide rail 509 is fixedly connected to the frame, and the second slider 508 is slidably connected to the second slide rail 509. The slide rail cover 507 covers the outside of the second slider 508. Preferably, there are 5 sets of the second lifting mechanisms 503, evenly arranged along the X-axis. The contour support block 506 is generally arc-shaped and can be used to support the corner between the floor and side panels of the carriage. There are two sets of contour support blocks 506, located on both sides of the conveying structure. The aforementioned second elevator 503 is located inside the contour support blocks 506 and is used to drive the two contour support blocks 506 to move to the sides or towards the center.

[0070] Similarly, the roller seat is located below the contour support block 506, and its movement is the same as that of the contour support block 506. Both utilize a lifting mechanism that drives the third lead screw 505 to rotate via a worm gear transmission, causing the third lead screw 505 to move the roller seat along the Y-axis. (And refer to...) Figure 3Roller assembly 1 512 and roller assembly 2 513 are installed on the roller seat. Roller assembly 1 512 and roller assembly 2 513 can transport the side panels of the carriage. When the side panels of the carriage are assembled, roller assembly 1 512 and roller assembly 2 513 are located inside the side panels of the carriage. The side panels of the carriage can also be transported through roller assembly 1 512 and roller assembly 2 513 on the roller seat.

[0071] [Ninth Embodiment] Reference Figure 1-10 The frame includes a base platform 601, on which a plurality of base columns 602 are installed, and base beams 603 are installed between the plurality of base columns 602. The base platform 601 is fixedly installed on the ground by a fixing connector 605.

[0072] In this embodiment, there are two base platforms 601 and 12 sets of base columns 602, with each set of base columns 602 including two base columns 602 on the left and right sides, respectively located on both sides of the conveying structure; there are also 12 base beams 603 located between the base columns 602. The base platforms 601 are mounted on the ground using fixing connectors 605 such as screws, and the frame provides a reliable reference for the entire equipment.

[0073] [Tenth Embodiment] Reference Figure 1-10 The frame is also equipped with a manual operation platform, which includes multiple ladders in stepped sections, and the entrance of the ladders is equipped with a safety door 706.

[0074] In this embodiment, the manual operation platform specifically comprises an operation platform column 701, platform steps 702, guardrail 703, ladder one 704, ladder two 705, safety door 706, and ladder three 707. Ladder two 705 provides direct access from the ground to the second-floor work platform, and guardrail 703 ensures worker safety during manual operations. Safety door 706 is designed to close when the equipment is not in use, preventing unauthorized personnel from entering the equipment.

[0075] Among them, ladder 704 allows workers to directly access platform 303 from the second-floor platform for work. Platform 303 is used by workers to stand on when adjusting the position of positioning base plate 301 in the sixth embodiment. Ladder 707 allows workers to directly access the next work station from the second-floor platform for work.

[0076] In summary, this equipment has two sets of gantry hydraulic devices, each equipped with two clamping cylinders for clamping the car body floor. The hydraulic cylinders are manually adjusted in the width direction of the gantry car body using the clamping and fixing assembly 110, while each gantry is automatically adjusted in the length direction of the car body.

[0077] The equipment comprises a base plate clamping structure, a side plate fixing structure, and a conveying structure. These structures work together to detach the assembled cargo box from the equipment and transport it to the next workstation. The positioning mechanisms for different vehicle models are independent and do not interfere with each other. Adjustment and replacement are convenient, ensuring accurate and reliable positioning, eliminating blind spots, and guaranteeing assembly precision. The cargo box assembly uses an inverted positioning method. Adjustments to the length, width, and height of the cargo box positioning mechanism are automatically achieved using a servo motor-driven adjustment mechanism, and clamping is achieved using hydraulic clamping. The servo motor is an absolute motor. The equipment provides accurate and reliable positioning and can automatically transport the cargo to the next workstation.

[0078] The above-mentioned equipment operates using the following steps: Step 1, firstly, the employee adjusts the equipment to the required production model and puts it in a ready-to-load state;

[0079] Step two: The worker hoists the side panel of the carriage into one side, and adjusts it to the working vehicle position through the side panel conveying roller 206 and the second drive source pressing device.

[0080] Step 3: The worker hoists the side panel of the carriage to the other side, and through the side panel conveying roller 206, the second drive source pressing device is adjusted to the working vehicle position;

[0081] Step 4: The worker hoists the car body floor into the movable support in the middle. If necessary, the lifting frame 401 can be used to lift and adjust the positioning position so as to align with the car body side panel in the previous step. The gantry clamping device is then used to perform spot welding operations in sequence.

[0082] Step 5: After the operation is completed, operate the control system of this station to release all the clamps, click the button to lift the lifting frame 401, and then use the chain to transport it to the next station;

[0083] Step six, repeat step one.

[0084] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A car body welding equipment, comprising: A frame, characterized in that a bottom plate pressing structure is installed on the frame, the bottom plate pressing structure is slidably connected to the frame along the length direction of the carriage, and includes a plurality of first drive sources, each of which is connected to a first pressing member, the first pressing member being used to press the bottom plate of the carriage. A side panel fixing structure, the side panel fixing structure including a plurality of side panel conveying rollers (206) for transporting side panels; a plurality of second drive sources, the second drive sources being connected to second clamping assemblies, the second clamping assemblies being used to clamp the side panels of the carriage; A conveying structure, the conveying structure including a chain and two sprockets for adjusting the position of the floor of the carriage; Lifting assembly (411) for lifting the assembled carriage out; The side plate fixing structure also includes: The second column assembly includes a fixed beam; A lifting beam is vertically slidably connected to the second column group, and the lifting beam is connected to a lifting drive assembly (217); A roller support (208) for mounting the side plate conveying roller (206) is provided, and the roller support (208) is mounted on the lifting beam; The second clamping assembly includes a first clamping seat (209) mounted on the lifting beam and a second clamping seat (215) mounted on the fixed beam; The lifting drive assembly (217) includes a motor, which is driven by a first lead screw. A lifting seat (222) is slidably connected to the first lead screw, and the lifting seat (222) is fixedly connected to the lifting beam. Multiple contour-following clamping blocks (216) are also fixedly installed on the fixed beam; The frame is also equipped with a vehicle width adjustment structure, which includes a positioning base plate (301) and a width adjustment plate (302) slidably connected to the positioning base plate (301).

2. The car body welding equipment according to claim 1, characterized in that, The base plate clamping structure also includes: Guide rail base assembly; A traveling vehicle body, which is slidably connected to the guide rail base assembly; The vehicle body includes a first column assembly, on which a hydraulic cylinder (111) is mounted and connected, and the output end of the hydraulic cylinder (111) is connected to a cylinder clamping block (112).

3. The car body welding equipment according to claim 1, characterized in that, The two sprockets include a conveyor sprocket (408) and a driven sprocket (407). The driven sprocket (407) is coaxially connected via a second drive shaft (404). The multiple conveyor sprockets (408) are connected via a conveyor chain (409). The conveyor sprockets (408) are coaxially connected to a third drive source. The lifting assembly (411) includes a fourth drive source, the output shaft of which is connected to a lifting shaft (405), and the lifting shaft (405) is connected to a lifting frame (401) for lifting the assembled rear compartment.

4. The car body welding equipment according to claim 1, characterized in that, The frame is also equipped with a width adjustment assembly, which includes a plurality of second lead screws (504) and third lead screws (505) arranged along the width direction of the carriage. The second lead screws (504) are slidably connected to a contour support block (506) for supporting the corner of the carriage panel. A roller seat is slidably connected to the third lead screw (505).

5. The car body welding equipment according to claim 1, characterized in that, The frame includes a base platform (601), on which a plurality of base columns (602) are installed, and base beams (603) are installed between the plurality of base columns (602). The base platform (601) is fixedly installed on the ground by a fixing connector (605).

6. The car body welding equipment according to claim 1, characterized in that, The frame is also equipped with a manual operation platform, which includes multiple ladders in stepped sections, and the entrance of the ladders is equipped with a safety door (706).

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