A double track transfer device

Abstract

The present application relates to the technical field of material turnover, and in particular to a double-track transfer device, which includes a turnover trolley for carrying workpieces to be welded and ground rails and hanging rails correspondingly arranged above and below the turnover trolley for the sliding movement of the turnover trolley; the turnover trolley includes a frame body, a clamping mechanism arranged on the frame body and used to clamp the workpieces to be welded, a transfer mechanism arranged on the frame body and used to transfer the workpieces to be welded, a running wheel arranged on the frame body and used to cooperate with the ground rails, and a slider arranged on the frame body and used to cooperate with the hanging rails. The present application has the effect of improving the problem of manual transfer of the rear subframe and improving the welding efficiency of the rear subframe.

Description

Technical Field

[0001] The present application relates to the technical field of material turnover, and in particular to a double-track transfer device. Background Art

[0002] The rear subframe is mainly composed of longitudinal beams, cross beams, reinforcement plates, suspension mounts, connection brackets and accessory mounting points, etc. Each component is first pre-clamped and positioned by a special fixture, and then initially fixed by spot welding to form a frame. Some key parts also need to be welded and filled by arc welding to ensure the strength and sealing of the weld.

[0003] In the related art, since the chassis rear subframe includes multiple components, there are also multiple corresponding welding stations, and welding fixtures matching each component are arranged at each welding station. Each welding step is manually performed including loading, clamping, welding and unloading.

[0004] With regard to the above-mentioned related technologies, workers need to manually carry the rear subframe to be welded to the corresponding welding station, and then move it away and to the next welding station after the welding operation is completed. The transfer operation mode of manually carrying the rear subframe up and down between welding stations is inefficient, so it is necessary to provide a rear subframe transfer device that can replace manual transfer. Summary of the invention

[0005] In order to improve the problem of manual transfer of the rear subframe and improve the welding efficiency of the rear subframe, the present application provides a double-track transfer device.

[0006] The present application provides a dual-track transfer device that adopts the following technical solution: A double-track transfer device, comprising a turnover trolley for carrying workpieces to be welded and a ground rail and a hanging rail correspondingly arranged above and below the turnover trolley for the turnover trolley to slide; The turnover trolley includes a frame body, a clamping mechanism arranged on the frame body and used to clamp the workpiece to be welded, a transfer mechanism arranged on the frame body and used to transfer the workpiece to be welded, a walking wheel arranged on the frame body and used to cooperate with the ground rail, and a slider arranged on the frame body and used to cooperate with the hanging rail.

[0007] By adopting the above technical solution, the frame body cooperates with the hanging rail through the slider to facilitate sliding between various welding stations, replacing manual handling, and then cooperates with the ground rail through the walking wheel, so that the frame body has a double-track conveying structure, so that the sliding between multiple welding stations can be more stable and efficient, and the transfer efficiency of the rear subframe between different welding stations is improved, thereby improving the efficiency of the entire rear subframe welding production process. The transfer mechanism on the frame body can accurately place the workpiece at the corresponding position of each welding station, and the clamping mechanism can stably clamp the workpiece to be welded during the movement of the trolley to avoid displacement or collision of the workpiece. At the same time, it can also cooperate with the transfer mechanism to prevent the workpiece from falling during the transfer process, and optimize the accuracy and convenience of loading and unloading operations.

[0008] Furthermore, the frame body includes a bottom bracket, a lower frame arranged on the bottom bracket, an upper frame arranged on the lower frame, and a top crossbeam arranged on the upper frame, the running wheel is installed below the bottom bracket and is used for sliding connection with the ground rail, and the slider is fixedly connected to the upper frame near the upper end and is used for sliding connection with the hanging rail; The transfer mechanism includes a transfer frame rotatably connected to the bottom bracket and abutment bars arranged on both sides of the transfer frame and used to abut against the lower vertical frame. The clamping mechanism includes a support frame for supporting the workpiece to be welded and a clamping assembly for clamping the workpiece to be welded. The support frame is installed on the upper part of the transfer frame.

[0009] By adopting the above technical solution, the frame body is composed of a bottom bracket, a lower vertical frame, an upper vertical frame and a top crossbeam to form a stable support structure, so that the turnover trolley can better bear the weight and external force impact of the rear sub-frame during the transfer process, ensuring safe operation. The support frame provides a stable support foundation for the workpiece to be welded, and combined with the clamping assembly, it can firmly clamp the workpiece, effectively preventing the workpiece from shaking or slipping when the turnover trolley moves. The transfer frame is rotatably connected to the bottom bracket. The transfer frame is pushed close to the welding station and the clamping assembly is released, so that the workpiece can be placed from the transfer frame to the welding station. The abutment bars on both sides of the transfer frame are used to abut against the lower vertical frame, thereby limiting the rotation position of the transfer frame and preventing the transfer frame from excessively tilting to the side away from the welding station during movement. Improve the stability and safety of the workpiece during transportation, and improve the overall quality and efficiency of the rear sub-frame welding production.

[0010] Furthermore, the transfer frame is provided with a hinge seat on the side wall near the upper end for installing the support frame, the support frame is fixedly connected with a hinge block for rotatably connecting with the hinge seat, and the hinge seat is fixedly connected with a limiting boss on the outer wall for cooperating with the hinge block.

[0011] By adopting the above technical solution, the rotation connection between the articulated seat and the articulated block enables the support frame to obtain a certain rotation angle on the transfer frame, so that when the workpiece is transferred, the support frame follows the transfer frame to produce a certain inclination, which is convenient for the transfer of the workpiece to be welded. The limiting boss can limit the maximum swing angle of the articulated block, ensuring that under normal working conditions, the articulated block of the support frame can abut against the limiting boss, thereby ensuring the stability of the placement of the workpiece to be welded.

[0012] Furthermore, the support frame is fixedly connected to a part supporting tooling for placing and clamping the workpiece to be welded at the lower part, and the clamping assembly is arranged at the upper part of the support frame. The clamping assembly includes two symmetrically arranged part clamping tools and a transmission connecting rod for clamping the two sides of the workpiece to be welded. The middle position of the transmission connecting rod is rotatably connected to the support frame, and the transmission connecting rod is rotatably connected to a control clamping wrench for driving the two part clamping tools to move closer to / away from each other.

[0013] By adopting the above technical solution, the part support fixture can accurately place and clamp the lower part of the workpiece to be welded, providing a stable bottom support for the workpiece. The symmetrically arranged part clamping fixture firmly clamps the workpiece from both sides, and cooperates with the part support fixture to achieve all-round accurate positioning and reliable clamping of the workpiece. By operating the clamping wrench and driving the part clamping fixtures to move closer or farther from each other with the help of the transmission connecting rod, the clamping and loosening operations of workpieces of different sizes can be realized conveniently and quickly, improving the versatility and flexibility of the clamping mechanism.

[0014] Furthermore, the hinged seat is integrally connected to a height-adjusting strip plate at the lower part, and a fixed clamp block for connecting with the height-adjusting strip plate is fixedly connected to the transfer frame, and a waist-shaped groove for adjusting the position of the fixed clamp block is provided on the height-adjusting strip plate.

[0015] By adopting the above technical solution, a waist-shaped groove is opened on the height-adjusting strip plate to cooperate with the fixed block. The operator can flexibly adjust the height of the support frame relative to the transfer frame in the vertical direction by moving the position of the fixed block in the waist-shaped groove, thereby adapting to rear sub-frames of different specifications, ensuring that the support frame can be at the optimal height position to place and support the workpiece, making the workpiece placement more stable.

[0016] Furthermore, the transfer frame has a middle crossbeam, and a pushing wrench for pushing the supporting frame is rotatably connected to the middle crossbeam.

[0017] By adopting the above technical solution, the push wrench is rotatably connected to the middle crossbeam, providing the operator with a component that is easy to operate. When it is necessary to transfer the workpiece on the support frame to the welding station, the push wrench is held and pushed to apply a pushing force to the support frame. At the same time, the support frame drives the transfer frame to achieve an effect of tilting to one side of the welding station at a certain angle through the rotation connection on the bottom bracket, thereby facilitating the transfer of the workpiece to be welded. The operation process is easier and more efficient, and the operation difficulty is reduced compared to manual operation or with the help of other inconvenient tools.

[0018] Furthermore, the upper frame is provided with a balancer labor-saving component for cooperating with the transfer frame, and the balancer labor-saving component includes a pulling steel cable arranged on the top crossbeam, a reel for reeling up the pulling steel cable, a fixed pulley arranged on the upper frame and used to cooperate with the pulling steel cable, and a strip fixing plate arranged on the rotating frame and cooperating with the pulling steel cable, the reel is detachably connected to the top crossbeam, the pulling steel cable is wound around the fixed pulley and fixedly connected to the strip fixing plate.

[0019] By adopting the above technical solution, the pulling steel cable, winder, fixed pulley and other components in the balancer labor-saving assembly cooperate with each other to form a labor-saving device. When operating the transfer frame to rotate and other actions, the winder can wind or unwind the pulling steel cable, and the fixed pulley can change the direction of the force, which can effectively reduce the external force required by the operator. Especially when transferring heavier rear sub-frame workpieces, the labor intensity can be greatly reduced, allowing the operator to easily control the transfer frame to reach the appropriate position and angle, facilitate the loading and unloading of workpieces, and improve the convenience and comfort of operation.

[0020] Furthermore, the running wheel first has an annular groove along the circumference direction for the ground rail to be inserted into.

[0021] By adopting the above technical solution, the ground rail is inserted into the annular groove on the running wheel, thereby limiting the lateral displacement of the running wheel on the ground rail, ensuring that the turnover trolley will not easily deviate to the left or right when moving along the ground rail, making the running trajectory of the trolley more stable and accurate, thereby ensuring that the rear subframe carried by it can be smoothly transferred between the welding stations.

[0022] Furthermore, the hanging rail is provided with a limiting member for limiting the position of the frame body.

[0023] By adopting the above technical solution, the limiting parts on the hanging rail can limit the frame body. When the turnover trolley slides along the hanging rail, the movement range of the frame body is limited to prevent the turnover trolley from moving to other welding stations. It also avoids safety accidents caused by derailment of the trolley and possible damage to the rear sub-frame workpiece, thereby ensuring the safety and order of the entire welding production environment.

[0024] Furthermore, the bottom bracket is provided with an avoidance groove for operators to avoid.

[0025] By adopting the above technical solution, the avoidance groove of the bottom bracket facilitates the operator to move flexibly around the trolley. When it is necessary to get close to the workpiece or welding station to perform some fine operations, such as adjusting the clamping mechanism, operating the transfer frame, etc., the avoidance groove can be used to stretch the limbs, change the standing position and operating angle, thereby reducing the operational obstacles caused by limited space and improving the convenience and efficiency of operation.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The double-track conveying structure is formed by the cooperation of the slider and the hanging rail of the frame body, the walking wheel and the ground rail, so that the turnover trolley can slide smoothly and efficiently between the welding stations, replacing manual handling, improving the transfer efficiency of the rear subframe between different stations, and thus improving the efficiency of the entire welding production process; 2. The stable structure of the frame body, the precise placement of the workpiece by the transfer mechanism, the precise positioning and reliable clamping of the workpiece by the clamping mechanism and its components (such as the parts support fixture, parts clamping fixture, etc.), and the restrictions on the rotation and position of related structures by components such as limit bosses and abutment bars, jointly ensure the stability of the workpiece during transportation and loading and unloading, avoid displacement, bumps, and drops, ensure the workpiece is in good condition, improve the overall quality of the rear subframe welding production, and optimize the accuracy of loading and unloading operations; 3. The height adjustment strip plate and the fixed block are combined to facilitate the adjustment of the support frame height, the push wrench is convenient for the support frame tilt operation, the balancer labor-saving component reduces labor intensity, the hanging rail limiter prevents the trolley from derailing, and the bottom bracket avoidance groove is convenient for the operator to move. These designs reduce the difficulty of operation from multiple angles, improve the convenience and comfort of operation, ensure the safety of operators, reduce potential safety accidents, and make the entire welding production environment safer and more orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a double-track transfer device in Example 1 of the present application.

[0028] Figure 2 It is a schematic diagram of the overall structure of the transfer vehicle in Example 1 of the present application.

[0029] Figure 3 It is a schematic diagram of the overall structure of the frame body of Example 1 of the present application.

[0030] Figure 4 yes Figure 3 An enlarged schematic diagram of the structure of the rotating shaft in part B.

[0031] Figure 5 yes Figure 1 A schematic diagram of the enlarged structure of the ground rail and the ring groove in part A.

[0032] Figure 6 It is a schematic diagram of the structural explosion of the balancing energy saver assembly of Example 1 of the present application.

[0033] Figure 7 It is an enlarged schematic diagram of the structure of the clamping mechanism in Example 1 of the present application in an initial state.

[0034] Figure 8 It is a schematic diagram of the overall structure of the clamping mechanism in Example 1 of the present application in a clamping state.

[0035] Fig. 9 It is an enlarged schematic diagram of the structure of the clamping mechanism in Example 1 of the present application in a clamping state.

[0036] Fig.10 It is a schematic diagram of the overall structure of a dual-track transfer device according to Example 2 of the present application.

[0037] Description of reference numerals: 1. Turnover trolley; 11. Frame body; 111. Bottom bracket; 1111. Avoidance groove; 1112. Rotary bearing; 112. Lower frame; 113. Upper frame; 114. Top crossbeam; 1441. Connecting piece; 1442. Clip; 12. Clamping mechanism; 121. Support frame; 1211. Articulated block; 1212. Parts supporting tool; 122. Clamping assembly; 1221. Parts clamping tool; 1222. Transmission connecting rod; 1223. Control clamping wrench; 13. Transfer mechanism; 131 , transfer frame; 1311, hinged seat; 13111, limiting boss; 1312, height adjustment strip plate; 13121, waist-shaped groove; 1313, fixed block; 1314, middle crossbeam; 1315, push wrench; 132, abutment bar; 133, balancer labor-saving component; 1331, pulling cable; 1332, winder; 1333, fixed pulley; 1334, strip fixing plate; 1335, U-shaped protective cover; 14, walking wheel; 141, ring groove; 15, slider; 2, hanging rail; 21, limiting piece; 3, ground rail. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-9 , Example 1 and Example 2, further describe the present application in detail.

[0039] Example 1 The present application embodiment discloses a dual-track transfer device. Figure 1 and Figure 2The double-track transfer device includes a plurality of turnover trolleys 1 corresponding to each welding station and a hanging rail 2 and a ground rail 3 for the turnover trolley 1 to slide. The turnover trolley 1 includes a frame body 11 and a clamping mechanism 12, a transfer mechanism 13, a running wheel 14 and a slider 15 provided on the frame body 11. The clamping mechanism 12 is used to clamp the workpiece to be welded, the transfer mechanism 13 is used to transfer the workpiece to be welded, the running wheel 14 is provided at the lower part of the frame body 11 and is used to cooperate with the ground rail 3, and the slider 15 is provided at the upper part of the frame body 11 and is used to cooperate with the hanging rail 2.

[0040] Reference Figure 1 and Figure 3 The frame body 11 includes a bottom bracket 111, two groups of symmetrically arranged lower vertical frames 112 and upper vertical frames 113, and a top crossbeam 114 for fixing the two groups of upper vertical frames 113. The bottom bracket 111 is provided with an avoidance groove 1111 for avoiding the operator.

[0041] The two groups of lower frames are vertically arranged and fixedly connected to the top of the bottom bracket 111 and are placed on both sides. The two groups of upper frames 113 are respectively fixedly connected to the side walls of the two groups of lower frames 112 near the upper end and are located on the side of the lower frames 112 away from the welding station. The top crossbeam 114 is fixedly connected to the side walls near the two end positions on the upper frames 113 near the welding station.

[0042] Combination Figure 4 The running wheel 14 is installed on the lower side of the bottom bracket 111. The running wheel 14 in this embodiment is preferably a universal wheel with strong steering ability. The outer wall of the running wheel 14 is provided with an annular groove 141 for the ground rail 3 to be inserted along the circumference direction. In this embodiment, the width of the annular groove 141 is slightly larger than the width of the ground rail 3, and a certain amount of activity margin is reserved between the running wheel 14 and the ground rail 3, which can better adapt to the size change of the ground rail 3 caused by processing and manufacturing, installation errors or slight deformation during use, etc., to ensure that the running wheel 14 and the ground rail 3 can always cooperate well.

[0043] The slider 15 is fixedly connected to the upper frame 113 near the upper end. The slider 15 in this embodiment is preferably a T-shaped block that matches the hanging rail 2, and the slider 15 is slidably connected to the hanging rail 2. The hanging rail 2 is provided with a limiting member 21 for limiting the frame body 11. The limiting member 21 in this embodiment is L-shaped. One end of the limiting member 21 is fixedly connected to the upper side of the hanging rail 2, and the other end is used to abut against the inner wall of the upper frame 113 to achieve a limiting effect, preventing the transfer trolley from passing through the hanging rail 2 to enter other welding stations.

[0044] Reference Figure 2 and Figure 5The transfer mechanism 13 includes a transfer frame 131, abutment bars 132 and a balancer labor-saving component 133. The bottom bracket 111 is provided with two rotation bearings 1112 for mounting the transfer frame 131. Both sides of the transfer frame 131 are hinged to the bottom bracket 111 through the rotation bearings 1112 near the bottom. There are two abutment bars 132, which are symmetrically arranged and fixedly connected to both sides of the transfer frame 131. Both abutment bars 132 can abut against the lower stand 112, thereby limiting the transfer frame 131.

[0045] Reference Figure 2 and Figure 6 The balancer labor-saving component 133 includes a pulling steel cable 1331, a reel 1332, a fixed pulley 1333 and a strip fixing plate 1334. The top crossbeam 114 is symmetrically arranged near both ends and fixedly connected with a connecting piece 1441. The connecting piece 1441 is provided with a waist-shaped through hole. The connecting piece 1441 is provided with a clip 1442 that can pass through the waist-shaped through hole. The reel 1332 is fixedly connected to the clip 1442. The reel 1332 has a coil spring for reeling the pulling steel cable 1331. The shell of the reel 1332 is detachably connected to the top crossbeam 114 through the cooperation between the clip 1442 and the connecting piece 1441. There are two strip fixing plates 1334. The two strip fixing plates 1334 are symmetrically arranged and fixedly connected to the two sides of the rotating frame. The fixed strip plate is located in the middle of the rotating frame to fix the pulling steel cable 1331.

[0046] The fixed pulley 1333 is installed on both sides of the upper frame 113 and is used to cooperate with the pulling cable 1331. The upper frame 113 is fixedly connected with a U-shaped protective cover 1335 that is covered on the outside of the fixed pulley 1333. The upper side and the lower side of the U-shaped protective cover 1335 are connected to allow the pulling cable 1331 to pass through. The pulling cable 1331 extends from the reel 1332, is wound on the fixed pulley 1333 to change the direction of the pulling force, and then extends out of the U-shaped protective cover 1335 and is fixedly connected to the fixed strip plate. When the operator rotates the transfer frame 131, the reel 1332 reels or unwinds the pulling cable 1331, and the fixed pulley 1333 changes the direction of the force, which can effectively reduce the external force that the operator needs to apply.

[0047] Reference Figure 7 and Figure 8The clamping mechanism 12 is located in the middle of the turnover trolley 1 and is used to grab and clamp the workpiece to be welded. The transfer mechanism 13 is located at the lower part of the turnover trolley 1 and is used to cooperate with the clamping mechanism 12 to transfer the grabbed workpiece to the welding station. The clamping mechanism 12 includes a support frame 121 and a clamping assembly 122. The support frame 121 is installed on the upper part of the transfer frame 131 and is used to support the workpiece to be welded. The clamping assembly 122 is used to clamp the workpiece to be welded. The transfer frame 131 is fixedly connected to the side wall near the upper end position with an articulated seat 1311 for mounting the support frame 121, and the support frame 121 is fixedly connected to an articulated block 1211 for rotationally connecting with the articulated seat 1311. The rotation connection between the articulated seat 1311 and the articulated block 1211 enables the support frame 121 to obtain a certain rotation angle on the transfer frame 131, so that when the workpiece is transferred, the support frame 121 follows the transfer frame 131 to produce a certain inclination together, which is convenient for the transfer of the workpiece to be welded. The articulated seat 1311 is integrally connected with a height adjustment strip plate 1312 at the lower part, and a fixed clamping block 1313 for connecting with the height adjustment strip plate 1312 is fixedly connected to the transfer frame 131. The height adjustment strip plate 1312 is provided with a waist-shaped groove 13121 for adjusting the position of the fixed clamping block 1313. The operator can flexibly adjust the height of the support frame 121 relative to the transfer frame 131 in the vertical direction by moving the position of the fixed clamping block 1313 in the waist-shaped groove 13121, so as to adapt to rear sub-frames of different specifications.

[0048] The articulated seat 1311 is fixedly connected to the outer wall with a limiting boss 13111 for cooperating with the articulated block 1211. The limiting boss 13111 can limit the maximum swing angle of the articulated block 1211 to ensure that under normal working conditions, the articulated block 1211 of the support frame 121 can abut against the limiting boss 13111, thereby ensuring the stability of the placement of the workpiece to be welded.

[0049] Combination Fig. 9 The support frame 121 is fixedly connected to a part support fixture 1212 at the lower part for placing and clamping the workpiece to be welded. The clamping assembly 122 is arranged at the upper part of the support frame 121. The clamping assembly 122 includes two symmetrically arranged part clamping fixtures 1221 for clamping the two sides of the workpiece to be welded and a transmission connecting rod 1222. The middle position of the transmission connecting rod 1222 is rotatably connected to the support frame 121. The transmission connecting rod 1222 is rotatably connected to a control clamping wrench 1223 for driving the two part clamping fixtures 1221 to move closer to / away from each other.

[0050] The transfer frame 131 has a middle crossbeam 1314 at a position adjacent to the strip fixing plate 1334, and a push wrench 1315 for pushing the support frame 121 is rotatably connected to the middle crossbeam 1314. When the workpiece on the support frame 121 needs to be transferred to the welding station, the push wrench 1315 is held and pushed to apply a pushing force to the support frame 121. The support frame 121 drives the transfer frame 131 to achieve an effect of tilting to one side of the welding station at a certain angle through a rotational connection on the bottom bracket 111, so as to facilitate the transfer of the workpiece to be welded.

[0051] The implementation principle of a dual-track transfer device in the embodiment of the present application is as follows: multiple turnover trolleys 1 correspond to each welding station, and the sliding track of the trolley is constructed through the hanging rail 2 and the ground rail 3. The frame body 11 of the turnover trolley 1 is equipped with a clamping mechanism 12, a transfer mechanism 13, a walking wheel 14, a slider 15 and other components, and the transfer function of the workpiece between different welding stations is realized through coordinated cooperation. The frame body 11 is composed of a bottom bracket 111, a lower frame 112, an upper frame 113 and a top crossbeam 114 connected according to a specific structure, providing a stable support frame 121 for the entire device.

[0052] The running wheel 14 is mounted on the lower side of the bottom bracket 111 and is slidably connected to the ground rail 3 through the annular groove 141. The arc-shaped guide portion on the ground rail 3 provides guidance for the running wheel 14 to turn. The width of the annular groove 141 is greater than the width of the ground rail 3 to reserve a margin for movement. The slider 15 is slidably connected to the hanging rail 2 using a T-shaped block. One end of the limiter 21 on the hanging rail 2 is fixed to the upper side of the hanging rail 2, and the other end is in contact with the inner wall of the upper frame 113, limiting the range of movement of the frame body 11 and preventing the transfer trolley from entering other welding stations.

[0053] The transfer frame 131 of the transfer mechanism 13 is hinged on the bottom bracket 111 through the rotating bearing 1112, and the abutting bars 132 on both sides abut against the lower stand 112 to limit the rotation position of the transfer frame 131. The balancer labor-saving component 133 works with the help of the pulling steel cable 1331, the reel 1332, the fixed pulley 1333 and the strip fixing plate 1334. The reel 1332 is detachably connected to the top crossbeam 114 through the clip 1442. The pulling steel cable 1331 extends from the reel 1332 and is fixed on the strip fixing plate 1334 after the fixed pulley 1333 changes the direction of the force. When the operator rotates the transfer frame 131, the reel 1332 is wound or unwound and the fixed pulley 1333 changes the direction of the force to reduce the external force requirement, so as to facilitate the manipulation of the transfer frame 131 to reach a suitable position and angle to transfer the workpiece.

[0054] In the clamping mechanism 12, the support frame 121 is installed on the upper part of the transfer frame 131, and a certain rotation angle is obtained through the rotation connection between the hinge seat 1311 and the hinge block 1211, so that the support frame 121 can be tilted along with the transfer frame 131 when the workpiece is transferred. The height adjustment strip plate 1312 cooperates with the fixed block 1313, and the vertical height of the support frame 121 relative to the transfer frame 131 is adjusted by means of the waist-shaped groove 13121 to adapt to rear sub-frames of different specifications. The limiting boss 13111 limits the maximum swing angle of the hinge block 1211 to ensure the stability of the workpiece placement. The part supporting fixture 1212 at the bottom of the supporting frame 121 places and clamps the lower part of the workpiece, and the upper clamping assembly 122 relies on the symmetrically arranged part clamping fixture 1221 and the transmission connecting rod 1222. By operating and controlling the clamping wrench 1223, the part clamping fixture 1221 is driven closer or farther away to achieve clamping of the workpiece, and the pushing wrench 1315 on the middle crossbeam 1314 pushes the supporting frame 121, driving the transfer frame 131 to tilt, and transferring the workpiece to the welding station, thereby ensuring the stability and precise placement of the workpiece during transfer and loading and unloading.

[0055] Example 2 Reference Fig.10 The difference between this embodiment and embodiment 1 is that the transfer trolley in this embodiment cancels the setting of the ground rail 3, and uses the hanging rail 2 alone to provide a sliding track for the transfer trolley without being constrained by the path of the ground rail 3, so that the running wheels 14 of the transfer trolley have greater freedom, so that the flexibility of the turnover trolley 1 on the plane will be greatly improved. When the turnover trolley 1 slides on the hanging rail 2 to align with the welding station, the running wheels 14 can slide perpendicular to the hanging rail 2, so that the frame body 11 is close to the welding station, thereby facilitating the transfer of the workpiece to be welded.

[0056] On the other hand, eliminating the provision of the hanging rail 2 also avoids damage to the workshop floor, frees up the space occupied by the laying of the ground rail 3, and provides more space for the placement of other equipment, the stacking of materials, or the activities of personnel.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-track transfer device, characterized in that: It comprises a trolley (1) for carrying workpieces to be welded, and a ground rail (3) and a hanging rail (2) respectively arranged above and below the trolley (1) for the trolley (1) to slide. The turnover trolley (1) comprises a frame body (11), a clamping mechanism (12) arranged on the frame body (11) and used to clamp a workpiece to be welded, a transfer mechanism (13) arranged on the frame body (11) and used to transfer the workpiece to be welded, a running wheel (14) arranged on the frame body (11) and used to cooperate with the ground rail (3), and a slider (15) arranged on the frame body (11) and used to cooperate with the hanging rail (2).

2. A double-track transfer device according to claim 1, characterized in that: The frame body (11) comprises a bottom bracket (111), a lower frame (112) arranged on the bottom bracket (111), an upper frame (113) arranged on the lower frame (112), and a top crossbeam (114) arranged on the upper frame (113); the walking wheel (14) is installed below the bottom bracket (111) and is used for sliding connection with the ground rail (3); the slider (15) is fixedly connected to the upper frame (113) near the upper end and is used for sliding connection with the hanging rail (2); The transfer mechanism (13) comprises a transfer frame (131) rotatably connected to the bottom bracket (111) and abutment bars (132) arranged on both sides of the transfer frame (131) and used to abut against the lower stand (112); the clamping mechanism (12) comprises a support frame (121) for supporting a workpiece to be welded and a clamping assembly (122) for clamping the workpiece to be welded; the support frame (121) is installed on the upper part of the transfer frame (131).

3. A double-track transfer device according to claim 2, characterized in that: The transfer frame (131) is provided with a hinge seat (1311) on the side wall near the upper end for installing the support frame (121), and the support frame (121) is fixedly connected with a hinge block (1211) for rotationally connecting with the hinge seat (1311), and the hinge seat (1311) is fixedly connected with a limiting boss (13111) on the outer wall for cooperating with the hinge block (1211).

4. A double-track transfer device according to claim 3, characterized in that: The support frame (121) is fixedly connected at the lower part with a part support tool (1212) for placing and clamping the workpiece to be welded. The clamping assembly (122) is arranged at the upper part of the support frame (121). The clamping assembly (122) includes two symmetrically arranged part clamping tools (1221) and a transmission connecting rod (1222) for clamping the two sides of the workpiece to be welded. The middle position of the transmission connecting rod (1222) is rotatably connected to the support frame (121). The transmission connecting rod (1222) is rotatably connected with a control clamping wrench (1223) for driving the two part clamping tools (1221) to move closer to / away from each other.

5. A double-track transfer device according to claim 4, characterized in that: The hinge seat (1311) is integrally connected to a height adjustment strip plate (1312) at the lower part, and a fixed clamping block (1313) for connecting to the height adjustment strip plate (1312) is fixedly connected to the transfer frame (131), and a waist-shaped groove (13121) for adjusting the position of the fixed clamping block (1313) is provided on the height adjustment strip plate (1312).

6. A double-track transfer device according to claim 3, characterized in that: The transfer frame (131) has a middle crossbeam (1314), and a pushing wrench (1315) for pushing the supporting frame (121) is rotatably connected to the middle crossbeam (1314).

7. A double-track transfer device according to claim 2, characterized in that: The upper frame (113) is provided with a balancer labor-saving component (133) for cooperating with the transfer frame (131), and the balancer labor-saving component (133) includes a pulling steel cable (1331) arranged on the top crossbeam (114), a reel (1332) for reeling up the pulling steel cable (1331), a fixed pulley (1333) arranged on the upper frame (113) and used to cooperate with the pulling steel cable (1331), and a strip fixing plate (1334) arranged on the rotating frame and cooperating with the pulling steel cable (1331), the reel (1332) is detachably connected to the top crossbeam (114), and the pulling steel cable (1331) is wound around the fixed pulley (1333) and fixedly connected to the strip fixing plate (1334).

8. A double-track transfer device according to claim 1, characterized in that: The running wheel (14) first has an annular groove (141) along the diameter direction for the ground rail (3) to be inserted into.

9. A double-track transfer device according to claim 1, characterized in that: The hanging rail (2) is provided with a limiting member (21) for limiting the position of the vehicle frame body (11).

10. A double-track transfer device according to claim 2, characterized in that: The bottom bracket (111) is provided with an avoidance groove (1111) for operators to avoid.

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