End chassis welding device

Abstract

The utility model relates to the technical field of welding auxiliary equipment, and provides an end chassis welding device which comprises a base, an assembling and welding platform, an overturning device, a lifting device and a pressing device. The assembling and welding platform is rotationally connected with the base; the turnover device is arranged on the base, is connected with the assembly welding platform and is used for driving the assembly welding platform to vertically rotate; the lifting device is arranged on the base and used for driving the assembly welding platform and the turnover device to ascend and descend. The pressing device is arranged on the assembling and welding platform and used for pressing the workpiece to be welded on one side of the assembling and welding platform. According to the end chassis welding device, after a workpiece is pressed on the assembly welding platform through the pressing device, angle and height adjustment can be carried out through the overturning device and the lifting device, the welding position is changed, overhead welding is adjusted to be flat welding, the welding operation difficulty can be effectively reduced, and the welding quality and the welding speed can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding auxiliary equipment, in particular to an end chassis welding device. Background Art

[0002] The aluminum alloy EMU end chassis is composed of four workpieces of different shapes and sizes: bolster, traction beam, cross beam and side beam. In the prior art, the end chassis is produced by assembling and positioning each workpiece and then welding it. This production method mainly has the following problems:

[0003] (1) The welding position cannot change during the welding process. Many welds are in the overhead welding position, which makes the welding operation difficult. As a result, there are many defects after welding, and the welding quality is difficult to guarantee. A lot of time is required for welding repair.

[0004] (2) During assembly, the positioning dimensions of each workpiece need to be confirmed. All assembly dimensions are assembled by manual measurement, positioning, and clamping. The assembly accuracy is poor, and the dimensional deviation can easily cause positioning errors between the bolster and the longitudinal beam. The accumulation of dimensional errors may cause the final assembly dimensions to exceed the tolerance, requiring a lot of time for adjustment to meet the product size requirements.

[0005] (3) The production efficiency is low and the labor cost is high. It requires repeated measurement and clamping, and repeated adjustment of each workpiece, which is time-consuming and the operation steps are cumbersome and complicated.

[0006] (4) The width dimensions of the joints between the workpieces during assembly are inconsistent, which makes it difficult to ensure flatness after assembly. Flatness needs to be adjusted after positioning.

[0007] (5) The precision of manual assembly varies from person to person, is difficult to control, has great uncertainty, and has no uniform rules, which seriously affects quality and production efficiency. Utility Model Content

[0008] The utility model provides an end frame welding device, which is used to solve the problem that in the prior art, when welding the end frame, the welding position cannot be changed during the welding process, many weld seams are in the overhead welding position, the welding operation is difficult, resulting in many defects after welding, the welding quality is difficult to guarantee, and a lot of time is needed for welding repair.

[0009] The utility model provides an end chassis welding device, comprising:

[0010] Base;

[0011] A welding platform, rotatably connected to the base;

[0012] A turning device, arranged on the base, connected to the welding platform, and used for driving the welding platform to rotate vertically;

[0013] A lifting device, arranged on the base, for driving the welding platform and the turning device to rise and fall;

[0014] The clamping device is arranged on the welding platform and is used for clamping the workpiece to be welded on one side of the welding platform.

[0015] According to an end chassis welding device provided by the utility model, two bases are provided, and the two bases are arranged opposite to each other;

[0016] The assembly welding platform is disposed between the two bases and is rotatably connected to the two bases respectively;

[0017] The flipping device and the lifting device are respectively provided with two corresponding to the base.

[0018] According to an end chassis welding device provided by the utility model, the base comprises a base body and a lifting slider, a slide rail is arranged on one side of the base body, and the lifting slider is vertically slidably arranged on the slide rail;

[0019] A rotating shaft is provided at the end of the assembly welding platform, and the rotating shaft is adapted to be adapted to the lifting slide block;

[0020] The flipping device is arranged on the lifting slider and connected to the rotating shaft;

[0021] The lifting device is arranged on the seat body, connected with the lifting slider, and is suitable for driving the lifting slider to move up and down.

[0022] According to an end chassis welding device provided by the utility model, the flipping device includes:

[0023] The first motor is fixedly mounted on the lifting slider;

[0024] A transmission assembly connects the motor shaft of the first motor and the rotating shaft.

[0025] According to an end chassis welding device provided by the utility model, the transmission assembly includes one of a gear set, a chain transmission assembly and a belt transmission assembly.

[0026] According to an end chassis welding device provided by the utility model, the flipping device also includes:

[0027] a locking member, the locking member being disposed adjacent to the rotating shaft;

[0028] A locking driving member is arranged on the lifting slider and connected to the locking member. The locking driving member is suitable for driving the locking member to switch between a state of contacting with the rotating shaft and a state of being separated from the rotating shaft.

[0029] According to an end chassis welding device provided by the utility model, the lifting device comprises:

[0030] A winch, arranged at the bottom of the seat;

[0031] A guide wheel, arranged at the top end of the seat body;

[0032] A traction rope has one end connected to the winch and the other end passing around the guide wheel and fixedly connected to the lifting slider.

[0033] According to an end chassis welding device provided by the utility model, the lifting device comprises:

[0034] A second motor is disposed at the bottom of the seat;

[0035] A screw rod is rotatably disposed vertically on one side of the seat body and is drivingly connected to the second motor;

[0036] A nut is fixedly connected to the lifting slider and is threadedly connected to the screw rod.

[0037] According to an end chassis welding device provided by the utility model, the clamping device comprises:

[0038] A bracket, one end of which is fixedly connected to the assembly welding platform and the other end of which is provided with a mounting arm;

[0039] The pressure rod is perpendicular to the assembly welding platform, penetrates the installation arm, and is threadedly connected to the installation arm.

[0040] According to an end chassis welding device provided by the utility model, the clamping device is detachably connected to the assembly welding platform.

[0041] The end chassis welding device provided by the utility model can press the workpiece onto the assembly welding platform through the pressing device, and then adjust the angle and height through the turning device and the lifting device to realize the change of welding position, and adjust the overhead welding to flat welding, which can effectively reduce the difficulty of welding operation and improve the welding quality and welding speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1This is one of the overall structural schematic diagrams of an end chassis welding device provided by the utility model;

[0044] Figure 2 This is the second overall structural schematic diagram of an end chassis welding device provided by the utility model;

[0045] Figure 3 It is a top view of an end chassis welding device provided by the utility model;

[0046] Figure 4 The utility model provides a schematic diagram showing the connection structure between a welding platform and a base in an end chassis welding device.

[0047] Reference numerals:

[0048] 10. Base; 11. Base body; 12. Lifting slider; 13. Slide rail; 20. Assembly welding platform; 21. Rotating axis; 30. Clamping device; 31. Bracket; 32. Mounting arm; 33. Pressure rod. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0051] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0052] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Combine the following Figures 1 to 4 The utility model is described in detail.

[0055] The end chassis welding device includes a base 10, a welding platform 20, a flip device (not shown in the figure), a lifting device (not shown in the figure) and a clamping device 30. The welding platform 20 is rotatably connected to the base 10. The flip device is arranged on the base 10, connected to the welding platform 20, and is used to drive the welding platform 20 to rotate vertically. The lifting device is arranged on the base 10, and is used to drive the welding platform 20 and the flip device to rise and fall. The clamping device 30 is arranged on the welding platform 20, and is used to clamp the workpiece to be welded on one side of the welding platform 20.

[0056] When the end chassis welding device of this embodiment is performing the end chassis welding, the workpiece to be welded can be fixed on the assembly welding platform 20 by the clamping device 30 to achieve positioning, realize the modularization of the end chassis assembly, avoid the time wasted in repeatedly measuring, positioning, and calibrating the position during the end chassis assembly welding process, improve the assembly welding efficiency, and reduce the labor cost. The rigid constraint of the clamping device 30 ensures the installation size of the end chassis and reduces the deformation after welding. The assembly welding platform 20 can be driven to rise and fall by the lifting device, and the assembly welding platform 20 can be adjusted to a suitable height, which is convenient for operators or automated welding equipment to perform welding operations. The angle rotation of the assembly welding platform 20 can be achieved by the flipping device, and the welding position of the end chassis can be changed during the welding process, so that all weld seam welding positions are in the flat welding position, and the special tooling for the end chassis assembly welding is designed to improve the welding quality.

[0057] During the welding process, first weld the side beam and the pillow block to connect the positioning weld, then weld the head position cross beam and the side beam to connect the positioning weld, and finally weld symmetrically from the pillow block position to the head direction. When all the positioning welds are completed, weld all the flat welds on the front side, and then weld the flat welds on the back side.

[0058] The welding platform 20 in this embodiment can be determined according to the shape of the end chassis, such as the trapezoidal structure shown in the figure. The end chassis includes a plurality of welded fixed cross beams, longitudinal beams and reinforcing ribs, and hollow holes are formed on the end chassis. On the one hand, the weight of the end chassis is reduced, and on the other hand, the hollow holes can also be used as welding channels to facilitate welding operations.

[0059] In some embodiments of the present invention, two bases 10 are provided, and the two bases 10 are arranged opposite to each other. The welding platform 20 is arranged between the two bases 10 and is rotatably connected to the two bases 10. Two turning devices and lifting devices are respectively provided corresponding to the bases 10.

[0060] In some embodiments of the present invention, two bases 10 are used, and the two bases 10 are arranged opposite to each other to provide a stable support foundation for the entire system. The two bases 10 are respectively provided with a flip device and a lifting device. This double base 10 configuration not only enhances stability, but also helps to disperse the workload, thereby extending the service life of the equipment and reducing maintenance requirements.

[0061] In some embodiments of the utility model, the base 10 includes a seat body 11 and a lifting slider 12, a slide rail 13 is provided on one side of the seat body 11, and the lifting slider 12 is vertically slidably arranged on the slide rail 13; a rotating shaft 21 is provided at the end of the assembly welding platform 20, and the rotating shaft 21 is adapted to cooperate with the lifting slider 12; a flipping device is provided on the lifting slider 12 and connected to the rotating shaft 21; a lifting device is provided on the seat body 11 and connected to the lifting slider 12, and is suitable for driving the lifting slider 12 to rise and fall.

[0062] Specifically, the bottom of the base 11 is fixed, and the whole is a rectangular column structure. Slide rails 13 are respectively arranged on both sides of the base 11. The slide rails 13 are rectangular structures and extend vertically. The lifting slider 12 is a rectangular block. Slide grooves adapted to the slide rails 13 are arranged on both sides of the lifting slider 12. The slide grooves are slidably matched with the slide rails 13 on the corresponding side. Horizontal rotating shafts 21 are respectively arranged at both ends of the length direction of the welding platform 20. The rotating shafts 21 at both ends are coaxial and are both located in the middle of the corresponding ends of the welding platform 20. The rotating shaft 21 is rotatably connected to the lifting slider 12 in the corresponding base 10 through a bearing. When the lifting device drives the lifting slider 12 to rise and fall, the welding platform 20 can be driven to rise and fall by the rotating shaft 21. The flipping device is fixedly arranged on the lifting slider 12 and is transmission-connected with the corresponding rotating shaft 21. The flipping device can be lifted and lowered under the drive of the lifting slider 12, thereby ensuring the connection with the rotating shaft 21, and the welding platform 20 can be driven to rotate by the rotating shaft 21 at any height.

[0063] The following is an exemplary description of two optional forms of the lifting device in this embodiment:

[0064] In an optional form, the lifting device includes a second motor, a screw and a nut. The second motor is a rotary motor, which is arranged at the bottom of the base body 11. The motor seat of the second motor is fixedly connected to the base body 11 by bolts, and the motor shaft of the second motor is horizontal. The screw is rotatably arranged vertically on one side of the base body 11, and the top and bottom ends are respectively rotatably connected to the base body 11 by bearings. The motor shaft of the second motor is connected to the screw through a structure such as a gear set, a synchronous belt or a chain, and the second motor can drive the screw to rotate when it is running. The nut is fixedly connected to the lifting slider 12 and is threadedly connected to the screw. When the rotary motor drives the screw to rotate, the nut can be driven to rise and fall, thereby driving the lifting slider 12 to rise and fall. In this embodiment, the moving direction of the lifting slider 12 is switched by switching the forward and reverse rotation of the rotary motor.

[0065] In another optional form, the lifting device includes a winch, a guide wheel and a traction rope. The winch is fixedly arranged at the bottom of the seat body 11 by bolts. The guide wheel is arranged at the top of the seat body 11, and two guide wheels are arranged, and the two guide wheels are respectively rotatably connected to the top plate of the slide rail 13. The traction rope can be a steel wire rope, etc., one end of the traction rope is connected to the winch, and the other end is passed around the guide wheel and fixedly connected to the lifting slider 12. When the winch reels in the traction rope, the lifting slider 12 can be pulled up, and when the winch releases the traction rope, the lifting slider 12 can be lowered.

[0066] Of course, the lifting device of this embodiment can also be an electric cylinder or a hydraulic cylinder, etc., which will not be described in detail here.

[0067] Optionally, the lifting height range of the lifting slider 12 is 500mm-1500mm, and the height of the weld can be adjusted according to operating habits.

[0068] In some embodiments of the utility model, the flip device includes a first motor and a transmission assembly, the first motor is horizontally fixedly arranged on the lifting slider 12, the motor shaft of the first motor is parallel to the rotating shaft 21, and the transmission assembly connects the motor shaft of the first motor and the rotating shaft 21. When the first motor is running, the rotating shaft 21 can be driven to rotate through the transmission assembly, thereby driving the welding platform 20 to rotate.

[0069] In this embodiment, the transmission assembly includes one of a gear set, a chain transmission assembly and a belt transmission assembly.

[0070] In some embodiments of the utility model, the flipping device further includes a locking member and a locking driving member, wherein the locking member is disposed adjacent to the rotating shaft 21, the locking driving member is disposed on the lifting slider 12 and connected to the locking member, and the locking driving member is adapted to drive the locking member to switch between a state of contact with the rotating shaft 21 and a state of separation from the rotating shaft 21. In the state of contact with the rotating shaft 21, the locking member starts a limiting effect on the rotating shaft 21, thereby locking the angle of the rotating shaft 21 and the assembly platform; in the state of separation from the rotating shaft 21, the limiting effect on the rotating shaft 21 is released, and the assembly platform can be driven to rotate.

[0071] Optionally, the lifting slider 12 is provided with an adapter hole and a sliding hole connected to the adapter hole, the rotating shaft 21 is rotatably set in the sliding hole, the locking piece is slidably set in the sliding hole, and the locking driving piece is a telescopic motor, one end of the telescopic motor is fixedly connected to the lifting slider 12, and the other end is fixedly connected to the locking piece. When the telescopic motor is extended or retracted, the locking piece can be driven to approach or move away from the rotating shaft 21, thereby driving the locking piece to switch between a state of contact with the rotating shaft 21 and a state of separation from the rotating shaft 21.

[0072] Optionally, a first tooth is provided on one side of the locking member close to the rotating shaft 21, and a second tooth is provided on the outer wall of the rotating shaft 21. When the locking member contacts the rotating shaft 21, the first tooth cooperates with the second tooth to achieve a better locking effect.

[0073] In some embodiments of the utility model, the clamping device 30 includes a bracket 31 and a pressure rod 33. One end of the bracket 31 is fixedly connected to the assembly welding platform 20, and the other end is provided with a mounting arm 32, the mounting arm 32 is vertically fixed to the bracket 31, and a threaded through hole is provided on the mounting arm 32. The pressure rod 33 is perpendicular to the assembly welding platform 20, penetrates the threaded through hole of the mounting arm 32, and is threadedly connected to the mounting arm 32. By rotating the pressure rod 33, the distance between the end of the pressure rod 33 and the assembly welding platform 20 can be adjusted to achieve the clamping and releasing operations.

[0074] Optionally, the clamping device 30 is detachably connected to the assembly welding platform 20, for example, the bracket 31 is connected to the assembly welding platform 20 by bolts. Thus, the number of the clamping devices 30 can be increased or decreased according to actual fixing needs.

[0075] Optionally, a handle or a hand wheel is provided at one end of the pressing rod 33 away from the welding platform 20 to facilitate the rotation operation.

[0076] Optionally, a plurality of clamping devices 30 are provided, for example, 10 clamping devices 30 are provided. The plurality of clamping devices 30 are respectively provided at different positions of the assembly welding platform 20 to achieve multi-point positioning.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An end chassis welding device, characterized in that: include: Base; A welding platform, rotatably connected to the base; A turning device, arranged on the base, connected to the welding platform, and used for driving the welding platform to rotate vertically; A lifting device, arranged on the base, for driving the welding platform and the turning device to rise and fall; The clamping device is arranged on the welding platform and is used for clamping the workpiece to be welded on one side of the welding platform.

2. The end chassis welding device according to claim 1, characterized in that: The base is provided with two, and the two bases are arranged opposite to each other; The assembly welding platform is disposed between the two bases and is rotatably connected to the two bases respectively; The flipping device and the lifting device are respectively provided with two corresponding to the base.

3. The end chassis welding device according to claim 1 or 2, characterized in that: The base comprises a base body and a lifting slider, a slide rail is arranged on one side of the base body, and the lifting slider is vertically slidably arranged on the slide rail; A rotating shaft is provided at the end of the assembly welding platform, and the rotating shaft is adapted to be adapted to the lifting slide block; The flipping device is arranged on the lifting slider and connected to the rotating shaft; The lifting device is arranged on the seat body, connected with the lifting slider, and is suitable for driving the lifting slider to move up and down.

4. The end chassis welding device according to claim 3, characterized in that: The turning device comprises: A first motor, fixedly mounted on the lifting slider; A transmission assembly connects the motor shaft of the first motor and the rotating shaft.

5. The end chassis welding device according to claim 4, characterized in that: The transmission assembly includes one of a gear set, a chain transmission assembly and a belt transmission assembly.

6. The end chassis welding device according to claim 4 or 5, characterized in that: The turning device also includes: a locking member, the locking member being disposed adjacent to the rotating shaft; A locking driving member is arranged on the lifting slider and connected to the locking member. The locking driving member is suitable for driving the locking member to switch between a state of contacting with the rotating shaft and a state of being separated from the rotating shaft.

7. The end chassis welding device according to claim 3, characterized in that: The lifting device comprises: A winch, arranged at the bottom of the seat; A guide wheel, arranged at the top end of the seat body; A traction rope has one end connected to the winch and the other end passing around the guide wheel and fixedly connected to the lifting slider.

8. The end chassis welding device according to claim 3, characterized in that: The lifting device comprises: A second motor is disposed at the bottom of the seat; A screw rod is rotatably disposed vertically on one side of the seat body and is drivingly connected to the second motor; A nut is fixedly connected to the lifting slider and is threadedly connected to the screw rod.

9. The end chassis welding device according to claim 1, characterized in that: The pressing device comprises: A bracket, one end of which is fixedly connected to the assembly welding platform and the other end of which is provided with a mounting arm; The pressure rod is perpendicular to the assembly welding platform, penetrates the installation arm, and is threadedly connected to the installation arm.

10. The end chassis welding device according to claim 1, characterized in that: The clamping device is detachably connected to the assembly welding platform.

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