Welding positioning device for passenger car frame assembly

Abstract

The utility model relates to the technical field of frame assembly welding, in particular to a passenger car frame assembly welding positioning device which comprises a positioning mechanism, the positioning mechanism comprises a limiting frame, two guide frames are connected between the two ends of the limiting frame in a sliding mode, and the bottoms of the two guide frames are both connected with a plurality of L-shaped rods in a sliding mode. According to the longitudinal beam welding device, the clamping plates are rotationally connected to the tops of the supporting seats, according to the length of a welded longitudinal beam, the motor is started to move the L-shaped rods, the bottom of the longitudinal beam is supported through the supporting seats, the limiting rods are clamped to the top of the longitudinal beam through rotation of the clamping plates for limiting, and the longitudinal beam can be conveniently welded while being limited. According to the longitudinal beam supporting device, the longitudinal beam supporting device can adapt to different thicknesses of various longitudinal beams, the multiple supporting bases are distributed at equal intervals, stress is uniform, supporting is more stable, the interval between the two guiding frames can be adjusted and controlled by rotating the two-way lead screw, frame assemblies with different widths can be conveniently limited, part of welding slag can be guided and collected, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of frame assembly welding, in particular to a welding positioning device for a bus frame assembly. Background Technique

[0002] The welding of the bus frame assembly is an important link in the bus manufacturing process, which involves connecting the various components of the frame into an integral structure through welding technology. The welding of the bus frame assembly can be carried out manually or by machine, depending on factors such as production conditions, technical requirements, and cost-effectiveness. The fixing work during the welding of the frame assembly is a key step to ensure the welding accuracy and quality. During the welding operation of the frame assembly, positioning pins and jigs are partially used to fix the frame assembly, but there are relatively few positioning points for the frame assembly. Moreover, the bus frame assembly has a large specification and a large weight, resulting in large forces on each support point, and it is easy to have problems such as uneven force, fixing detachment, and frame deviation, which affect the welding accuracy. In addition, different models of jigs need to be equipped for fixing frame assemblies of different specifications, which is not convenient to use. Content of the Utility Model

[0003] The purpose of the utility model is to provide a welding positioning device for a bus frame assembly to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A welding positioning device for a bus frame assembly includes a positioning mechanism. The positioning mechanism includes a limiting frame. Two guiding frames are slidably connected between the two ends of the limiting frame. A plurality of L-shaped rods are slidably connected to the bottoms of the two guiding frames. The bottoms of two opposite L-shaped rods are slidably connected. The tops of the L-shaped rods are slidably connected to a support seat. A clamping plate is rotatably connected to the top of the support seat. A limiting rod is slidably connected inside the clamping plate. A driving module for synchronously driving a plurality of L-shaped rods is arranged on one side of one of the guiding frames.

[0006] Furthermore: Sliders I are fixedly connected to both ends of the guiding frame. The sliders I are slidably connected between the adjacent ends of the limiting frame. A bidirectional lead screw is rotatably connected inside one end of the limiting frame. The bidirectional lead screw penetrates through two adjacent sliders I. The sliders I are threadedly connected to the adjacent segments of the bidirectional lead screw.

[0007] Preferably: A collection cabinet is arranged on the inner bottom surface of the limiting frame. Two positioning blocks for limiting the collection cabinet are symmetrically and fixedly connected to the inner bottom surface of the limiting frame.

[0008] Furthermore, a second slider is fixedly connected to the inner bottom surface of the L-shaped rod. The second slider is slidably connected to the bottom of the adjacent guide frame. Two rollers are rotatably connected to the top of the second slider. A plurality of connecting rods are arranged at the bottom of the guide frame. Both ends of the connecting rod penetrate through the adjacent L-shaped rod and are slidably connected thereto. The top end of the L-shaped rod is slidably connected to a support rod. The support rod is fixedly connected to the bottom of the adjacent support seat. A first spring is fixedly connected between the support rod and the L-shaped rod.

[0009] Furthermore, a first rack is slidably connected to the top of the support seat. A pressing plate is fixedly connected to the top of the first rack. Two second springs are fixedly connected between the bottom of the first rack and the support seat. A first gear is rotatably connected to the inside of the support seat. A second rack is slidably connected to the inside of the support seat. Both the first rack and the second rack are meshed with the first gear. A shaft rod is rotatably connected to the top of the support seat. A clamping plate is fixedly connected to the outer wall of the shaft rod. A second gear is fixedly sleeved on the outer wall of the shaft rod. The second rack is meshed with the second gear.

[0010] Preferably, a plurality of slots are equidistantly arranged on the outer wall of the limiting rod. A fixing screw is screwed to the top of the clamping plate. The bottom of the fixing screw is movably clamped with the adjacent slot.

[0011] Furthermore, the driving module includes a regulating frame fixedly connected to the outer wall of one of the guide frames. A plurality of regulating plates are slidably connected to the inside of the regulating frame. A telescopic grid is rotatably connected to one side of the regulating frame. The regulating plate is rotatably connected to the adjacent rotating node of the telescopic grid. A unidirectional lead screw is rotatably connected to one side of the regulating frame. A motor is fixedly connected to one side of the regulating frame. The output end of the motor is fixedly connected to the adjacent end of the unidirectional lead screw. A docking sleeve is fixedly connected to the bottom of the regulating plate adjacent to the motor. The unidirectional lead screw penetrates through the docking sleeve and is screwed thereto.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By rotatably connecting a clamping plate to the top of the support seat, according to the length of the welded longitudinal beam, the motor is started to move a plurality of L-shaped rods. The bottom of the longitudinal beam is supported by a plurality of support seats, and the limiting rod is stuck on the top of the longitudinal beam by rotating the clamping plate for limiting. While limiting the longitudinal beam, it can adapt to different thicknesses of various longitudinal beams. The plurality of support seats are equidistantly distributed and the force is uniform, making the support more stable. Rotating the bidirectional lead screw can adjust the distance between the two guide frames, facilitating the limitation of the vehicle frame assembly with different widths, and can guide and collect some welding slag, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a partial enlarged structural schematic diagram of part A in the present utility model Figure 1 ;

[0016] Figure 3 is a side sectional structural schematic diagram of the guiding frame of the present utility model

[0017] Figure 4 is the present utility model Figure 3 is a partial enlarged structural schematic diagram of part B in it

[0018] Figure 5 is a side sectional structural schematic diagram of the support seat of the present utility model

[0019] Figure 6 is the present utility model Figure 5 is a partial enlarged structural schematic diagram of part C in it

[0020] Figure 7 is a partial transverse sectional structural schematic diagram of the limiting frame of the present utility model

[0021] In the figure: 10, positioning mechanism; 11, limiting frame; 111, bidirectional lead screw; 112, positioning block; 113, collection cabinet; 12, guiding frame; 121, slider one; 13, L-shaped rod; 131, slider two; 132, roller; 133, connecting rod; 134, support rod; 135, spring one; 14, support seat; 141, clamping plate; 142, limiting rod; 1421, slot; 143, fixing screw; 144, rack one; 1441, pressing plate; 1442, spring two; 145, gear one; 146, rack two; 147, shaft rod; 148, gear two; 15, driving module; 151, regulating frame; 152, telescopic grid; 153, regulating plate; 154, unidirectional lead screw; 155, motor; 156, docking sleeve Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model

[0023] Please refer to Figures 1 to 7, in the embodiment of the present utility model, a welding positioning device for a bus frame assembly includes a positioning mechanism 10. The positioning mechanism 10 includes a limiting frame 11. Two guiding frames 12 are slidably connected between the two ends of the limiting frame 11. A plurality of L-shaped rods 13 are slidably connected to the bottoms of the two guiding frames 12. The bottoms of two opposite L-shaped rods 13 are slidably connected. The top of the L-shaped rod 13 is slidably connected to a support seat 14. A clamping plate 141 is rotatably connected to the top of the support seat 14. A limiting rod 142 is slidably connected inside the clamping plate 141. A driving module 15 for synchronously driving a plurality of L-shaped rods 13 is arranged on one side of one of the guiding frames 12.

[0024] Specifically, by rotatably connecting a clamping plate 141 to the top of the support seat 14, according to the length of the welding longitudinal beam, start the motor 155 to move a plurality of L-shaped rods 13. Support the bottom of the longitudinal beam through a plurality of support seats 14, and make the limiting rod 142 stuck on the top of the longitudinal beam by rotating the clamping plate 141 for limiting. While limiting the longitudinal beam, it can adapt to the different thicknesses of various longitudinal beams. Rotating the bidirectional lead screw 111 can adjust the interval between the two guiding frames 12, which is convenient for limiting the frame assemblies of different widths.

[0025] Embodiment 1

[0026] As Figures 5 - 6 shown, in this embodiment, a slider two 131 is fixedly connected to the inner bottom surface of the L-shaped rod 13. The slider two 131 is slidably connected to the bottom of the adjacent guiding frame 12. Two rollers 132 are rotatably connected to the top of the slider two 131. A plurality of connecting rods 133 are arranged at the bottom of the guiding frame 12. The two ends of the connecting rod 133 respectively penetrate through the adjacent L-shaped rod 13 and are slidably connected thereto. The top of the L-shaped rod 13 is slidably connected to a support rod 134. The support rod 134 is fixedly connected to the bottom of the adjacent support seat 14. A spring one 135 is fixedly connected between the support rod 134 and the L-shaped rod 13. A rack one 144 is slidably connected to the top of the support seat 14. A pressing plate 1441 is fixedly connected to the top of the rack one 144. Two spring two 1442 are fixedly connected between the bottom of the rack one 144 and the support seat 14. A gear one 145 is rotatably connected inside the support seat 14. A rack two 146 is slidably connected inside the support seat 14. Both the rack one 144 and the rack two 146 are engaged with the gear one 145. A shaft rod 147 is rotatably connected to the top of the support seat 14. The clamping plate 141 is fixedly connected to the outer wall of the shaft rod 147. A gear two 148 is fixedly sleeved on the outer wall of the shaft rod 147. The rack two 146 is engaged with the gear two 148. A plurality of slots 1421 are equidistantly opened on the outer wall of the limiting rod 142. A fixing screw 143 is screwed on the top of the clamping plate 141. The bottom of the fixing screw 143 is movably clamped with the adjacent slot 1421.

[0027] In this embodiment, through the limitation of the slider two 131 by the guide frame 12, the sliding limitation of the L-shaped rod 13 is realized, and the sliding friction between the L-shaped rod 13 and the guide frame 12 is reduced by the roller 132. The adjacent two L-shaped rods 13 are synchronized by the connecting rod 133, so that the regulation plate 153 can drive the two L-shaped rods 13 to move and regulate synchronously. Through the limitation of the support rod 134 by the L-shaped rod 13, the sliding limitation of the support seat 14 is realized, and through the drive of the first spring 135, the support seat 14 can adapt to different arcs of the vehicle frame longitudinal beam, so that the support seat 14 can be stably attached to the bottom of the longitudinal beam. The support rod 134 drives the support seat 14 to contact the bottom of the longitudinal beam, and the longitudinal beam presses down the pressing plate 1441, so that the first rack 144 moves down to drive the first gear 145, stretches the second spring 1442, and drives the second rack 146 to move up through the transmission between the first gear 145 and the second rack 146. The transmission between the second rack 146 and the second gear 148 drives the shaft rod 147 to drive the clamping plate 141 to rotate to the horizontal state, and the clamping plate 141 drives the limiting rod 142 to rotate so that one end of the limiting rod 142 contacts the top of the longitudinal beam for limitation. The sliding limitation between the limiting rod 142 and the clamping plate 141 enables the limiting rod 142 to slide and regulate its position to adapt to different longitudinal beam heights. After the position of the limiting rod 142 is regulated, the rotating fixing screw 143 passes through the adjacent slot 1421 to limit the position of the limiting rod 142.

[0028] As Figures 1 - 7 shown, in this embodiment, sliders one 121 are fixedly connected to both ends of the guide frame 12. The sliders one 121 are slidably connected between the adjacent ends of the limiting frame 11. One end of the limiting frame 11 is internally rotatably connected with a bidirectional lead screw 111. The bidirectional lead screw 111 passes through the adjacent two sliders one 121, and the adjacent segments of the sliders one 121 are in threaded connection with the bidirectional lead screw 111. A collection cabinet 113 is arranged on the inner bottom surface of the limiting frame 11, and two positioning blocks 112 for limiting the collection cabinet 113 are symmetrically and fixedly connected to the inner bottom surface of the limiting frame 11.

[0029] During specific implementation, through the limitation of the slider one 121 by the bidirectional lead screw 111, the sliding limitation of the two guide frames 12 is realized, so that it can adapt to the widths of different vehicle frame assemblies. Rotating the bidirectional lead screw 111 by an external rocker can drive the two guide frames 12 to move synchronously to regulate the interval between the two guide frames 12. The collection cabinet 113 can collect the welding slag falling between the two guide frames 12, and the two positioning blocks 112 can assist in positioning the position of the collection cabinet 113.

[0030] Embodiment Two

[0031] Based on the first embodiment, in order to synchronously drive multiple L-shaped rods 13 and support seats 14, and make the intervals between multiple support seats 14 the same, so that the forces on the vehicle frame longitudinal beam supported by multiple support seats 14 are stable.

[0032] As Figures 1 - 2 shown, in this embodiment, the driving module 15 includes a regulating frame 151 fixedly connected to the outer wall of one of the guiding frames 12. A plurality of regulating plates 153 are slidably connected inside the regulating frame 151. One side of the regulating frame 151 is rotatably connected to a telescopic grid 152. The regulating plate 153 is rotatably connected to the adjacent rotating node of the telescopic grid 152. One side of the regulating frame 151 is rotatably connected to a unidirectional lead screw 154. One side of the regulating frame 151 is fixedly connected to a motor 155. The output end of the motor 155 is fixedly connected to the adjacent end of the unidirectional lead screw 154. A docking sleeve 156 is fixedly connected to the bottom of the regulating plate 153 adjacent to the motor 155. The unidirectional lead screw 154 passes through the docking sleeve 156 and is threadedly connected thereto.

[0033] During specific implementation, according to the length of the longitudinal beam that needs to be supported during the welding of the vehicle frame assembly, the motor 155 is started to drive the unidirectional lead screw 154 to rotate. The unidirectional lead screw 154 drives the docking sleeve 156 to move, driving the telescopic grid 152 to extend, thereby driving multiple L-shaped rods 13 to move synchronously through the regulating plate 153, so that the interval between the two outermost L-shaped rods 13 on the guiding frame 12 is slightly smaller than the length of the welded longitudinal beam at this time. The longitudinal beam is supported by multiple support seats 14, and the intervals between multiple support seats 14 are the same and the forces are evenly distributed, so that the vehicle frame assembly can be stably supported.

[0034] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding positioning device for a passenger car frame assembly, characterized in that: The invention comprises a positioning mechanism (10), wherein the positioning mechanism (10) comprises a limiting frame (11), two guide frames (12) are slidably connected between the two ends of the limiting frame (11), a plurality of L-shaped rods (13) are slidably connected at the bottom of the two guide frames (12), the bottom ends of the two opposite L-shaped rods (13) are slidably connected, the top ends of the L-shaped rods (13) are slidably connected to a support seat (14), the top of the support seat (14) is rotatably connected to a clamping plate (141), the inside of the clamping plate (141) is slidably connected to a limiting rod (142), and a driving module (15) for synchronously driving the plurality of L-shaped rods (13) is provided on one side of one of the guide frames (12).

2. A passenger car frame assembly welding positioning device according to claim 1, characterized in that: Both ends of the guide frame (12) are fixedly connected with a slider (121), and the slider (121) is slidably connected between adjacent ends of the limit frame (11). One end of the limit frame (11) is internally rotatably connected with a bidirectional screw rod (111), and the bidirectional screw rod (111) passes through two adjacent sliders (121). The slider (121) is screwed and connected to adjacent sections of the bidirectional screw rod (111).

3. A passenger car frame assembly welding positioning device according to claim 1, characterized in that: A collection cabinet (113) is arranged on the inner bottom surface of the limiting frame (11), and two positioning blocks (112) for limiting the collection cabinet (113) are symmetrically fixedly connected to the inner bottom surface of the limiting frame (11).

4. A passenger car frame assembly welding positioning device according to claim 1, characterized in that: A second slider (131) is fixedly connected to the inner bottom surface of the L-shaped rod (13), and the second slider (131) is slidably connected to the bottom of the adjacent guide frame (12). The top of the second slider (131) is rotatably connected to two rollers (132). A plurality of connecting rods (133) are arranged at the bottom of the guide frame (12), and the two ends of the connecting rods (133) respectively penetrate the adjacent L-shaped rod (13) and are slidably connected thereto. A support rod (134) is slidably connected to the top of the L-shaped rod (13), and the support rod (134) is fixedly connected to the bottom of the adjacent support seat (14). A first spring (135) is fixedly connected between the support rod (134) and the L-shaped rod (13).

5. The welding positioning device for a passenger car frame assembly according to claim 1, characterized in that: The top of the support seat (14) is slidably connected to a rack 1 (144), the top of the rack 1 (144) is fixedly connected to a pressure plate (1441), the bottom of the rack 1 (144) is fixedly connected to the support seat (14) with two springs 2 (1442), the interior of the support seat (14) is rotatably connected to a gear 1 (145), the interior of the support seat (14) is slidably connected to a rack 2 (146), the rack 1 (144) and the rack 2 (146) are both meshed with the gear 1 (145), the top of the support seat (14) is rotatably connected to a shaft (147), the clamping plate (141) is fixedly connected to the outer wall of the shaft (147), the outer wall of the shaft (147) is fixedly sleeved with a gear 2 (148), and the rack 2 (146) is meshed with the gear 2 (148).

6. A passenger car frame assembly welding positioning device according to claim 5, characterized in that: A plurality of slots (1421) are equidistantly provided on the outer wall of the limiting rod (142); a fixing screw (143) is screwed on the top of the clamping plate (141); and the bottom of the fixing screw (143) is movably engaged with an adjacent slot (1421).

7. A passenger car frame assembly welding positioning device according to claim 1, characterized in that: The driving module (15) comprises a regulating frame (151) fixedly connected to the outer wall of one of the guide frames (12); a plurality of regulating plates (153) are slidably connected inside the regulating frame (151); a telescopic grid (152) is rotatably connected to one side of the regulating frame (151); the regulating plate (153) is rotatably connected to an adjacent rotation node of the telescopic grid (152); a one-way screw rod (154) is rotatably connected to one side of the regulating frame (151); a motor (155) is fixedly connected to one side of the regulating frame (151); an output end of the motor (155) is fixedly connected to an adjacent end of the one-way screw rod (154); a docking sleeve (156) is fixedly connected to the bottom of the regulating plate (153) adjacent to the motor (155); and the one-way screw rod (154) passes through the docking sleeve (156) and is screwed thereto.

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