Welding clamp for steel-aluminum composite conductor rail end elbow accessory

Abstract

The utility model belongs to the technical field of tool clamps, and provides a steel-aluminum composite conductor rail end elbow accessory welding clamp which comprises a clamp platform. The end elbow limiting assembly comprises a limiting plate fixedly connected to the clamp platform, and an end elbow positioning piece is arranged at the top of the limiting plate; the conductor rail limiting assembly comprises a fixing frame and a cushion block mechanism which are fixedly connected to the clamp platform, the fixing frame is arranged close to the limiting plate, the cushion block mechanism is arranged far away from the limiting plate, a downward pressing mechanism is arranged on the fixing frame and corresponds to the top of the conductor rail, and the cushion block mechanism comprises a bottom shell fixedly connected to the clamp platform; a lifting shell is vertically connected to the bottom shell in a sliding mode, a lifting piece is arranged between the lifting shell and the bottom shell, and the lifting shell corresponds to the bottom of the conductor rail. According to the utility model, the end part elbow fitting can be accurately positioned at the position, which needs to be welded, on the steel-aluminum composite rail and can be effectively fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures, and in particular relates to a welding fixture for elbow accessories at the end of a steel-aluminum composite conductive rail. Background Art

[0002] Steel-aluminum composite conductive rails are mainly used in urban rail transit. I-shaped steel-aluminum composite conductive rails include steel-aluminum composite rails and components.

[0003] Steel-aluminum composite rails are made of a composite of stainless steel strips and aluminum alloy profiles. The stainless steel strips, which contact the current shoe, offer excellent wear resistance, while the aluminum alloy provides excellent electrical conductivity. During the production of the end elbow components of steel-aluminum composite rails, the quality of the long welds on both sides of the T-plate of the end elbow significantly impacts the functionality of the entire steel-aluminum composite rail system.

[0004] For example, when using traditional manual welding methods to weld the end elbow fittings of a composite conductive rail, since the end elbow fittings are tilted on the conductive rail, it is difficult to manually place the end elbow fittings to ensure the angle requirements between them and the conductive rail. At the same time, during manual welding, the end elbow fittings must first be positioned on the steel-aluminum composite rail by spot welding, and then both sides of the end elbow fittings must be fully welded. Compared to the traditional manual welding method used by workers, the use of welding robots can effectively solve the problems of low efficiency, poor consistency, and difficulty in ensuring welding quality in manual welding. However, the use of welding robots for automatic welding of end elbow fittings places high demands on the accurate positioning and fixation of the end elbow fittings. Therefore, there is an urgent need for a welding fixture for the end elbow fittings of a steel-aluminum composite conductive rail to fix and clamp the end elbow fittings. Utility Model Content

[0005] The purpose of the utility model is to provide a welding fixture for the end elbow fittings of a steel-aluminum composite conductive rail to solve the above-mentioned problems, so as to achieve the purpose of accurately positioning the end elbow fittings at the position where welding is required on the steel-aluminum composite rail and effectively fixing the end elbow fittings.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: a welding fixture for elbow fittings at the end of a steel-aluminum composite conductive rail, comprising:

[0007] fixture platform;

[0008] The end elbow limiting assembly comprises a limiting plate fixedly connected to the fixture platform, and the top of the limiting plate is provided with an end elbow positioning piece;

[0009] The conductive rail limiting assembly includes a fixing frame and a pad mechanism fixedly connected to the clamp platform, the fixing frame is arranged close to the limiting plate, and the pad mechanism is arranged away from the limiting plate. The fixing frame is provided with a pressing mechanism, and the pressing mechanism is arranged corresponding to the top of the conductive rail. The pad mechanism includes a bottom shell fixedly connected to the clamp platform, a lifting shell is vertically slidably connected to the bottom shell, a lifting member is arranged between the lifting shell and the bottom shell, and the lifting shell is arranged corresponding to the bottom of the conductive rail.

[0010] Preferably, the end elbow positioning member includes a positioning groove opened on the top of the limit plate, the positioning groove is in the same extension direction as the conductive rail, an opening is provided at one end of the positioning groove away from the fixing frame, and a stop block is fixedly connected to one end of the positioning groove close to the fixing frame, the positioning groove is adapted to the bottom of the end elbow accessory, and the stop block is provided corresponding to one end of the end elbow accessory.

[0011] Preferably, the pressing mechanism includes a lifting rod vertically slidably connected to the fixing frame, the bottom of the lifting rod is hinged with a pressure plate, the pressure plate is arranged corresponding to the top of the conductive rail, and a height adjustment member is provided between the lifting rod and the fixing frame.

[0012] Preferably, the height adjustment member includes a control box fixedly connected to the fixed frame, a slide groove is vertically opened on the side wall of the control box, a connecting plate is slidably connected in the slide groove, one end of the connecting plate is fixedly connected to the lifting rod, a first screw rod is vertically rotatably connected in the control box, the other end of the connecting plate is transmission-connected to the first screw rod, a worm gear is provided on the bottom fixed sleeve of the first screw rod, a worm gear is rotatably connected in the control box, the worm gear is meshed with the worm gear, and one end of the worm gear passes through the side wall of the control box and is fixedly connected to the first hand wheel.

[0013] Preferably, the lifting member includes two groups of lower connecting rods, one end of the two groups of lower connecting rods are respectively hinged to the middle part of the bottom inner side of the bottom shell, the other end of the two groups of lower connecting rods are respectively hinged to one end of the connecting block, the other end of the two groups of connecting blocks are respectively hinged to one end of the upper connecting rod, the other end of the two groups of upper connecting rods are respectively hinged to the middle part of the inner top of the lifting shell, a second screw rod is transmission-connected between the middle parts of the two groups of connecting blocks, one end of the second screw rod is fixedly connected to a second hand wheel, and the second hand wheel is located on the outside of the bottom shell.

[0014] Preferably, an inner slot and an outer slot are respectively formed on the same side wall of the bottom shell and the lifting shell, and one end of the second screw rod fixedly connected to the second hand wheel passes through the inner slot and the outer slot.

[0015] Preferably, a plurality of first L-shaped calipers are fixedly connected to the fixture platform, and the plurality of first L-shaped calipers are arranged corresponding to the conductive rails.

[0016] Compared with the existing technology, the present invention has the following advantages and technical effects: the main function of the end elbow positioning member is to position the end elbow fitting on the fixture platform; the main function of the pressing mechanism is to fix the conductive rail on the fixture platform after the conductive rail is placed on the fixture platform and matched with the end elbow fitting, thereby preventing relative movement between the conductive rail and the end elbow fitting; the main function of the lifting member is to adjust the angle between the conductive rail and the end elbow fitting by adjusting the height of the lifting shell, so that the end elbow fitting is fixed to the conductive rail at a set angle. Overall, the present invention can accurately position the end elbow fitting at the position on the steel-aluminum composite rail where welding is required, and can also effectively fix the end elbow fitting, which is conducive to the automatic welding of the welding robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the welding fixture of the present invention;

[0019] Figure 2 for Figure 1 A partial enlarged view in FIG;

[0020] Figure 3 A schematic diagram of a stopper of the present utility model;

[0021] Figure 4 This is a schematic diagram of the end elbow fitting of the utility model installed in the positioning groove;

[0022] Figure 5 This is a schematic diagram of the height adjustment member of the utility model;

[0023] Figure 6 It is a schematic diagram of the lifting member of the utility model;

[0024] Among them, 1. Clamp platform; 2. Limit plate; 3. Conductive rail; 4. End elbow accessories; 5. L-shaped caliper; 7. Pad mechanism; 8. Positioning groove; 9. Stop block; 10. Fixed bracket; 11. Control box; 12. Lifting rod; 13. Pressure plate; 14. First hand wheel; 15. First screw rod; 16. Worm gear; 17. Worm; 18. Connecting plate; 19. Lifting shell; 20. External slot; 21. Internal slot; 22. Bottom shell; 23. Second hand wheel; 24. Second screw rod; 25. Connecting block; 26. Upper connecting rod; 27. Lower connecting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] Reference Figures 1-6 The utility model provides a welding fixture for the elbow fittings at the end of a steel-aluminum composite conductive rail, comprising:

[0028] Fixture platform 1;

[0029] The end elbow limiting assembly includes a limiting plate 2 fixedly connected to the fixture platform 1, and an end elbow positioning piece is provided on the top of the limiting plate 2;

[0030] The conductive rail limiting assembly includes a fixing frame 10 and a pad mechanism 7 fixedly connected to the clamp platform 1. The fixing frame 10 is arranged close to the limiting plate 2, and the pad mechanism 7 is arranged away from the limiting plate 2. A downward pressing mechanism is provided on the fixing frame 10, and the downward pressing mechanism is arranged corresponding to the top of the conductive rail 3. The pad mechanism 7 includes a bottom shell 22 fixedly connected to the clamp platform 1, and a lifting shell 19 is vertically slidably connected to the bottom shell 22. A lifting member is provided between the lifting shell 19 and the bottom shell 22, and the lifting shell 19 is arranged corresponding to the bottom of the conductive rail 3.

[0031] The main function of the end elbow positioning member is to position the end elbow fitting 4 on the fixture platform 1. The main function of the pressing mechanism is to fix the conductive rail 3 to the fixture platform 1 after it is placed on the fixture platform 1 and matched with the end elbow fitting, preventing relative movement between the conductive rail 3 and the end elbow fitting 4. The main function of the lifting member is to adjust the angle between the conductive rail 3 and the end elbow fitting 4 by adjusting the height of the lifting shell 19, so that the end elbow fitting 4 is fixed to the conductive rail 3 at a set angle. Overall, the utility model can accurately position the end elbow fitting at the required welding position on the steel-aluminum composite rail, and can also effectively fix the end elbow fitting, which is conducive to the automatic welding of the welding robot.

[0032] A further optimized solution is provided, in which the end elbow positioning member includes a positioning groove 8 opened on the top of the limit plate 2, the positioning groove 8 has the same extension direction as the conductive rail 3, an opening is provided at the end of the positioning groove 8 away from the fixing frame 10, and a stop block 9 is fixedly connected to the end of the positioning groove 8 close to the fixing frame 10, the positioning groove 8 is adapted to the bottom of the end elbow fitting 4, and the stop block 9 is provided corresponding to one end of the end elbow fitting 4.

[0033] like Figure 3 and Figure 4 As shown, the width of the positioning groove 8 is adapted to the width of the end elbow fitting 4, so that the end elbow fitting 4 can be stuck in the positioning groove 8 to perform transverse positioning of the end elbow fitting 4. At the same time, by making the end of the end elbow fitting 4 fit with the stopper 9, the longitudinal positioning of the end elbow fitting 4 can be achieved.

[0034] To further optimize the solution, the downward pressing mechanism includes a lifting rod 12 vertically slidably connected to the fixed frame 10, and a pressure plate 13 is hinged at the bottom of the lifting rod 12. The pressure plate 13 is arranged corresponding to the top of the conductive rail 3, and a height adjustment member is arranged between the lifting rod 12 and the fixed frame 10.

[0035] like Figure 2 As shown, by providing a hinged pressure plate 13, when the conductive rail 3 is adjusted in an appropriate angle under the adjustment of the pad mechanism 7, as the lifting rod 12 descends, it can be ensured that the pressure plate 13 is in contact with the top of the conductive rail 3, generating sufficient resistance to limit the movement of the conductive rail 3.

[0036] A further optimized solution is provided, in which the height adjustment member includes a control box 11 fixedly connected to the fixed frame 10, and a slide groove is vertically opened on the side wall of the control box 11, in which a connecting plate 18 is slidably connected, and one end of the connecting plate 18 is fixedly connected to the lifting rod 12, and a first screw rod 15 is vertically rotatably connected in the control box 11, and the other end of the connecting plate 18 is transmission-connected to the first screw rod 15, and a worm gear 16 is provided at the bottom fixed sleeve of the first screw rod 15, and a worm gear 17 is rotatably connected in the control box 11, and the worm gear 17 is meshed with the worm gear 16, and one end of the worm gear 17 passes through the side wall of the control box 11 and is fixedly connected to the first hand wheel 14.

[0037] like Figure 2 and Figure 5 As shown, when the conductive rail 3 needs to be fixed, the operator rotates the first handwheel 14, causing the first handwheel 14 to rotate the worm 17. The rotation of the worm 17 drives the worm wheel 16. The rotation of the worm wheel 16 drives the first screw 15. The rotation of the first screw 15 drives the connecting plate 18 to descend along the slide groove through the thread transmission, thereby driving the lifting rod 12 to descend, so that the pressure plate 13 is pressed against the top of the conductive rail 3. Reversing the first handwheel 14 can lift the pressure plate 13, releasing the conductive rail 3.

[0038] To further optimize the solution, the lifting parts include two groups of lower connecting rods 27, one end of the two groups of lower connecting rods 27 are respectively hinged to the middle of the bottom inner side of the bottom shell 22, the other end of the two groups of lower connecting rods 27 are respectively hinged to one end of the connecting block 25, the other end of the two groups of connecting blocks 25 are respectively hinged to one end of the upper connecting rod 26, the other end of the two groups of upper connecting rods 26 are respectively hinged to the middle of the inner top of the lifting shell 19, and a second screw rod 24 is transmission-connected between the middle parts of the two groups of connecting blocks 25, and one end of the second screw rod 24 is fixedly connected to the second hand wheel 23, and the second hand wheel 23 is located on the outside of the bottom shell 22.

[0039] According to a further optimization scheme, an inner slot 21 and an outer slot 20 are respectively provided on the same side wall of the bottom shell 22 and the lifting shell 19 , and one end of the second screw rod 24 fixedly connected to the second hand wheel 23 passes through the inner slot 21 and the outer slot 20 .

[0040] like Figure 1 and Figure 6 As shown, by rotating the second hand wheel 23, the second screw rod 24 is rotated. When the second screw rod 24 rotates, the two sets of connecting blocks 25 are simultaneously moved toward the center through the thread transmission, thereby increasing the deflection angle of the two sets of upper connecting rods 26 and the two sets of lower connecting rods 27. The distance between the ends of the upper connecting rods 26 and the lower connecting rods 27 away from the connecting blocks 25 increases, thereby pushing the lifting housing 19 up and appropriately raising the conductive rail 3. The lifting housing 19 can be lowered by reversing the second hand wheel 23.

[0041] As a further optimization solution, a plurality of L-shaped clamps 5 are fixedly connected to the clamp platform 1 , and the plurality of L-shaped clamps 5 are arranged corresponding to the conductive rails 3 .

[0042] like Figure 1 As shown, two sets of L-shaped clamps 5 are provided on the clamp platform 1 , and the L-shaped clamps 5 can assist in clamping the conductive rail 3 on the clamp platform 1 .

[0043] The working process of this embodiment is as follows: the end elbow fitting 4 is placed in the positioning groove 8, with one end thereof abutting against the stop 9. Next, the conductive rail 3 is placed on the fixture platform 1, with the end elbow fitting 4 contacting the location on the conductive rail 3 where welding is to be performed. The second handwheel 23 is then rotated to adjust the angle of the conductive rail 3 so that the angle between the end elbow fitting 4 and the conductive rail 3 meets the set value. Next, the first handwheel 14 is rotated to cause the pressure plate 13 to press against the conductive rail 3, while simultaneously controlling the two sets of L-shaped clamps 5 to clamp the conductive rail 3, achieving a fixed position between the conductive rail 3 and the end elbow fitting 4.

[0044] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0045] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A welding fixture for the elbow fittings at the end of a steel-aluminum composite conductor rail, characterized in that ,include: Fixture platform (1); An end elbow limiting assembly comprises a limiting plate (2) fixedly connected to the fixture platform (1), and an end elbow positioning piece is provided on the top of the limiting plate (2); A conductive rail limiting assembly comprises a fixing frame (10) and a pad mechanism (7) fixedly connected to the clamp platform (1), wherein the fixing frame (10) is arranged close to the limiting plate (2), and the pad mechanism (7) is arranged away from the limiting plate (2). A pressing mechanism is arranged on the fixing frame (10), and the pressing mechanism is arranged corresponding to the top of the conductive rail (3). The pad mechanism (7) comprises a bottom shell (22) fixedly connected to the clamp platform (1), a lifting shell (19) is vertically slidably connected to the bottom shell (22), a lifting member is arranged between the lifting shell (19) and the bottom shell (22), and the lifting shell (19) is arranged corresponding to the bottom of the conductive rail (3).

2. The welding fixture for the elbow fitting at the end of a steel-aluminum composite conductor rail according to claim 1, characterized in that: The end elbow positioning member includes a positioning groove (8) provided on the top of the limiting plate (2), the positioning groove (8) and the conductive rail (3) extending in the same direction, an opening being provided at one end of the positioning groove (8) away from the fixing frame (10), a stopper (9) being fixedly connected to one end of the positioning groove (8) close to the fixing frame (10), the positioning groove (8) being adapted to the bottom of the end elbow fitting (4), and the stopper (9) being provided correspondingly to one end of the end elbow fitting (4).

3. The welding fixture for the elbow fitting at the end of a steel-aluminum composite conductor rail according to claim 1, characterized in that: The pressing mechanism includes a lifting rod (12) vertically slidably connected to the fixing frame (10), a pressing plate (13) is hinged at the bottom of the lifting rod (12), and the pressing plate (13) is arranged corresponding to the top of the conductive rail (3), and a height adjustment member is arranged between the lifting rod (12) and the fixing frame (10).

4. The welding fixture for the elbow fitting at the end of a steel-aluminum composite conductor rail according to claim 3 is characterized by: The height adjustment member includes a control box (11) fixedly connected to the fixed frame (10), a sliding groove is vertically opened on the side wall of the control box (11), a connecting plate (18) is slidably connected in the sliding groove, one end of the connecting plate (18) is fixedly connected to the lifting rod (12), a first screw rod (15) is vertically rotatably connected in the control box (11), the other end of the connecting plate (18) is transmission-connected to the first screw rod (15), a worm gear (16) is fixedly provided on the bottom of the first screw rod (15), a worm gear (17) is rotatably connected in the control box (11), the worm gear (17) is meshed with the worm gear (16), and one end of the worm gear (17) passes through the side wall of the control box (11) and is fixedly connected to the first hand wheel (14).

5. The welding fixture for the elbow fitting at the end of a steel-aluminum composite conductor rail according to claim 3, characterized in that: The lifting member comprises two groups of lower connecting rods (27), one end of the two groups of lower connecting rods (27) are respectively hinged to the middle of the bottom inner side of the bottom shell (22), the other end of the two groups of lower connecting rods (27) are respectively hinged to one end of the connecting block (25), the other end of the two groups of connecting blocks (25) are respectively hinged to one end of the upper connecting rod (26), the other end of the two groups of upper connecting rods (26) are respectively hinged to the middle of the inner top of the lifting shell (19), a second screw rod (24) is transmission-connected between the middle parts of the two groups of connecting blocks (25), one end of the second screw rod (24) is fixedly connected to a second hand wheel (23), and the second hand wheel (23) is located on the outer side of the bottom shell (22).

6. The welding fixture for the elbow fitting at the end of a steel-aluminum composite conductor rail according to claim 5, characterized in that: An inner slot (21) and an outer slot (20) are respectively provided on the same side wall of the bottom shell (22) and the lifting shell (19); one end of the second screw rod (24) fixedly connected to the second hand wheel (23) passes through the inner slot (21) and the outer slot (20).

7. The welding fixture for the elbow fitting at the end of a steel-aluminum composite conductor rail according to claim 5, characterized in that: A plurality of first L-shaped clamps (5) are also fixedly connected to the clamp platform (1), and the plurality of first L-shaped clamps (5) are arranged corresponding to the conductive rails (3).

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