Auxiliary rack for axle welding assembly line

Abstract

The invention relates to the technical field of axle production equipment, in particular to an auxiliary rack for an axle welding assembly line, and aims to solve the problem that an axle is difficult to turn over when welding work is carried out on the welding assembly line. The auxiliary rack comprises guide rails and a conveying frame, more than four conveying wheels are arranged at the bottom and matched with the guide rails, and mounting holes are formed in the side faces of the conveying wheels. The wheel hub motor is arranged on the conveying wheel, the rotating ring is arranged on the mounting hole, and the clamp body is arranged on the rotating ring and used for clamping an axle needing to be welded; the positioning pin is arranged on the conveying frame, the conveying frame is provided with a first positioning hole, the rotating ring is provided with a second positioning hole, the positioning pin penetrates through the first positioning hole and the second positioning hole to limit rotation of the positioning pin, and then an axle needing to be welded is fixed; and the transport frame drives the axle fixed on the clamp body to move together, so that the axle is welded on an assembly line.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle axle production equipment, and in particular to an auxiliary frame for a vehicle axle welding production line. Background Art

[0002] Axle welding is a processing method often used in the axle production process. Axles have many surfaces to be welded. Since the axle welding positions are in different positions, especially in the production process of the assembly line, the axle moves on the assembly line, and the welding positions of the previous and next welding steps are different, sometimes the welding position may be tricky, resulting in welding difficulties. At this time, if there is a device that can easily flip the axle, it will make the welding work go more smoothly. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide an auxiliary frame for a vehicle axle welding line to solve the problem that it is difficult to flip the vehicle axle when welding on the welding line.

[0004] Based on the above-mentioned purpose, the present invention provides an auxiliary frame for an axle welding assembly line, comprising a guide rail arranged on the ground; a transport frame, the bottom of which is provided with more than four transport wheels, the transport wheels cooperate with the guide rails, and the side is provided with mounting holes; a hub motor is arranged on the transport wheel to drive the transport wheel to rotate; a rotating ring is arranged on the mounting hole and has the freedom to rotate around its own axis; a clamping body is arranged on the rotating ring and is used to clamp the axle to be welded; a positioning pin is arranged on the transport frame, the transport frame is provided with a first positioning hole and the rotating ring is provided with a second positioning hole, the positioning pin limits the rotation of the positioning pin by passing through the first positioning hole and the second positioning hole, thereby fixing the axle to be welded; the transport frame moves with the axle fixed on the clamping body, and then welding is performed on the assembly line.

[0005] As a further improvement of the present application, the rotating ring includes two semi-arc-shaped semi-rotating bodies, the inner sides of one end of the two semi-rotating bodies are connected to each other by a hinge so that the rotating ring can be opened, and the clamp body is fixedly arranged on one of the semi-rotating bodies.

[0006] As a further improvement of the present application, a plurality of second positioning holes are provided on the rotating ring, and the axes of the second positioning holes pass through the center of the rotating ring. The positioning pin is selectively passed through the first positioning holes and different second positioning holes, thereby facilitating the welding of different parts of the axle on the assembly line.

[0007] As a further improvement of the present application, an indicator arrow is provided on the rotating ring, and a mark is provided on the transport frame, and the mark corresponds to different second positioning holes. When the indicator arrow points to different marks, the positioning pin can pass through the first positioning hole and the selected second positioning hole.

[0008] As a further improvement of the present application, according to the welding process requirements of different axles, there are multiple types of rotating rings, and the second positioning holes on different types of rotating rings are set at different positions.

[0009] As a further improvement of the present application, the rotating ring partially extends out of the mounting hole, and a detection unit is also provided on the auxiliary frame for the axle welding assembly line. The detection unit detects whether the locating pin is installed in the second locating hole by cooperating with the portion of the rotating ring extending out of the mounting hole.

[0010] As a further improvement of the present application, the detection unit includes a drive motor, which is arranged on a transport frame; a drive wheel, which is arranged on an output shaft of the drive motor, and the outer wall of the drive wheel and the part of the rotating ring extending out of the mounting hole are frictionally transmitted; by starting the drive motor, the drive wheel rubs the outer wall of the rotating ring, and if the rotating ring rotates accordingly, it means that the positioning pin is not installed in the second positioning hole, the axle is fixed failed, and the welding operation cannot be carried out, and it must be corrected. The processing can only be continued after the fixation is completed; if the rotating ring does not rotate accordingly, it means that the positioning pin is installed in the second positioning hole, the axle is fixed successfully, and the next welding operation is carried out.

[0011] As a further improvement of the present application, the transport frame is provided with two mutually parallel outward convex sliding bars, a sliding plate is installed on the outward convex sliding bar, and a return spring is provided on the sliding plate; a slideway cooperating with the outward convex sliding bar is provided on one side of the sliding plate, and the cross-sections of the outward convex sliding bar and the slideway are both inverted "convex" shapes, and the width of the inverted "convex" shape is small on the side close to the surface of the transport frame; the drive motor is fixedly arranged on the sliding plate; the two ends of the return spring are respectively connected to the sliding plate and the outer wall of the transport frame, thereby pushing the drive motor toward the outer wall of the rotating ring.

[0012] As a further improvement of the present application, the outer wall of the portion of the rotating ring extending out of the mounting hole is provided with anti-slip grooves.

[0013] The beneficial effects of the present invention are as follows: the vehicle axle is fixedly mounted on the rotating ring by means of a clamping body connection, and the vehicle axle is rotated by rotating the rotating ring to expose the welding position, making the welding process more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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 in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic structural diagram of an auxiliary frame for a vehicle axle welding assembly line according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic structural diagram of the cooperation between a rotating ring and a transport frame of an auxiliary frame for an axle welding assembly line according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic structural diagram of a transport wheel of an auxiliary frame for an axle welding assembly line according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic cross-sectional structural diagram of a rotating ring of an auxiliary frame for an axle welding assembly line according to an embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of a partial cross-sectional structure of an auxiliary frame for an axle welding assembly line after a rotating ring is unfolded according to an embodiment of the present invention;

[0020] Figure 6 The present invention is a schematic structural diagram of a detection unit of an auxiliary frame for an axle welding assembly line according to an embodiment of the present invention.

[0021] The markings in the figure are:

[0022] 1. Guide rail; 2. Transport rack; 21. First positioning hole; 22. Second positioning hole; 23. Mark; 24. Outwardly convex sliding strip; 25. Slide plate; 26. Reset spring; 27. Slideway; 28. Upper cover; 3. Transport wheel; 31. Hub motor; 4. Mounting hole; 5. Rotating ring; 51. Semi-rotating body; 52. Indicator arrow; 6. Clamp body; 7. Positioning pin; 81. Drive motor; 82. Drive wheel. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figure 1-3 As shown, an auxiliary frame for an axle welding assembly line includes a guide rail 1, which is arranged on the ground; a transport frame 2, which has more than four transport wheels 3 at the bottom, the transport wheels 3 cooperate with the guide rail 1, and have mounting holes 4 on the side; a hub motor 31, which is arranged on the transport wheel 3 to drive the transport wheel 3 to rotate; a rotating ring 5, which is arranged on the mounting hole 4 and has the freedom to rotate around its own axis; a clamp body 6, which is arranged on the rotating ring 5 and is used to clamp the axle to be welded; a locating pin 7, which is arranged on the transport frame 2, the transport frame 2 is provided with a first locating hole 21 and the rotating ring 5 is provided with a second locating hole 22, the locating pin 7 limits the rotation of the locating pin 7 by passing through the first locating hole 21 and the second locating hole 22, thereby fixing the axle to be welded; the transport frame 2 moves with the axle fixed on the clamp body 6, and then welding is performed on the assembly line.

[0026] Since the axle welding positions are at different locations, in order to facilitate welding, the axle is fixedly mounted on the rotating ring 5 through a clamp body 6. By rotating the rotating ring 5 to rotate the axle, the welding position is exposed, which is more convenient for welding processing.

[0027] Since part of the length of the axle may be inserted into the rotating ring 5, in order to facilitate insertion and removal, Figure 2 , 4 -5, the rotating ring 5 includes two semi-circular semi-rotating bodies 51, and the inner sides of one end of the two semi-rotating bodies 51 are connected to each other by hinges so that the rotating ring 5 can be opened, and the clamp body 6 is fixedly arranged on one of the semi-rotating bodies 51.

[0028] Different process steps require different welding positions. In order to adapt to different welding positions, such as Figure 2 , 4-5, the rotating ring 5 is provided with a plurality of second positioning holes 22, the axis of the second positioning hole 22 passes through the center of the rotating ring 5, and the positioning pin 7 is convenient for welding different parts of the axle on the assembly line by selectively passing through the first positioning hole 21 and different second positioning holes 22.

[0029] like Figure 2 As shown, in order to quickly align the first positioning hole 21 with the required second positioning hole 22, an indicator arrow 52 is provided on the rotating ring 5, and a mark 23 is provided on the transport frame 2. The mark 23 corresponds to different second positioning holes 22. When the indicator arrow 52 points to different marks 23, the positioning pin 7 can pass through the first positioning hole 21 and the selected second positioning hole 22.

[0030] According to the welding process requirements of different axles, there are various types of the rotating ring 5 , and the second positioning holes 22 on the rotating rings 5 ​​of different types are arranged at different positions.

[0031] In order to facilitate the replacement of the rotating ring 5, Figure 2 The transport frame 2 is provided with a detachable upper cover 28 at the position of the first positioning hole 21 , and the upper cover 28 is fixed to the transport frame 2 by bolts. After the transport frame 2 is disassembled, the rotating ring 5 can be quickly replaced.

[0032] In order to detect whether the locating pin 7 is aligned and installed in place, the rotating ring 5 partially extends out of the installation hole 4. A detection unit is also provided on the auxiliary frame for the axle welding assembly line. The detection unit cooperates with the part of the rotating ring 5 extending out of the installation hole 4 to detect whether the locating pin 7 is installed in the second locating hole 22.

[0033] Further, such as Figure 2 and 6 As shown, the detection unit includes a driving motor 81, which is arranged on the transport frame 2; a driving wheel 82, which is arranged on the output shaft of the driving motor 81, and the outer wall of the driving wheel 82 and the part of the rotating ring 5 extending out of the mounting hole 4 are frictionally transmitted; by starting the driving motor 81, the driving wheel 82 rubs the outer wall of the rotating ring 5, and if the rotating ring 5 rotates accordingly, it means that the positioning pin 7 is not installed in the second positioning hole 22, the axle is fixed failed, and the welding operation cannot be carried out, and it must be corrected. The processing can only be continued after the fixation is completed; if the rotating ring 5 does not rotate accordingly, it means that the positioning pin 7 is installed in the second positioning hole 22, the axle is fixed successfully, and the next welding operation is carried out.

[0034] Since the rotating ring 5 and the driving wheel 82 will wear during use, in order to ensure the contact pressure and ensure that the detection effect is reliable, the transport frame 2 is provided with two parallel outward convex sliding bars 24, and a slide plate 25 is installed on the outward convex sliding bar 24, and a return spring 26 is provided on the slide plate 25; one side of the slide plate 25 is provided with a slideway 27 that cooperates with the outward convex sliding bar 24, and the cross-sections of the outward convex sliding bar 24 and the slideway 27 are both inverted "convex" shapes, and the width of the inverted "convex" shape is small on the side close to the surface of the transport frame 2; the driving motor 81 is fixedly arranged on the slide plate 25; the two ends of the return spring 26 are respectively connected to the slide plate 25 and the outer wall of the transport frame 2, and then push the driving motor 81 toward the outer wall of the rotating ring 5.

[0035] Under the push of the return spring 26 , within the elastic deformation range of the return spring 26 , the contact pressure is sufficient to meet the friction requirement.

[0036] In order to enhance friction, the outer wall of the portion of the rotating ring 5 extending out of the mounting hole 4 is provided with anti-slip grooves.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0038] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary frame for axle welding production line, characterized in that: include A guide rail (1) is arranged on the ground; A transport frame (2) having at least four transport wheels (3) at the bottom, the transport wheels (3) being matched with the guide rail (1) and having mounting holes (4) at the side; A wheel hub motor (31), arranged on the transport wheel (3), driving the transport wheel (3) to rotate; A rotating ring (5), arranged on the mounting hole (4), having the freedom to rotate around its own axis; A clamp body (6), arranged on the rotating ring (5), and used for clamping the axle to be welded; A positioning pin (7) is arranged on the transport frame (2); the transport frame (2) is provided with a first positioning hole (21) and the rotating ring (5) is provided with a second positioning hole (22); the positioning pin (7) passes through the first positioning hole (21) and the second positioning hole (22) to limit the rotation of the positioning pin (7), thereby fixing the axle to be welded; The transport frame (2) moves together with the axle fixed on the clamp body (6), and then welding is performed on the assembly line.

2. The auxiliary frame for the axle welding line according to claim 1, characterized in that: The rotating ring (5) comprises two semi-arc-shaped semi-rotating bodies (51), the inner sides of one end of the two semi-rotating bodies (51) are connected to each other via a hinge, so that the rotating ring (5) can be opened, and the clamp body (6) is fixedly arranged on one of the semi-rotating bodies (51).

3. The auxiliary frame for the axle welding line according to claim 1, characterized in that: The rotating ring (5) is provided with a plurality of second positioning holes (22), the axes of the second positioning holes (22) pass through the center of the rotating ring (5), and the positioning pin (7) is convenient for welding different parts of the axle on the assembly line by selectively passing through the first positioning hole (21) and different second positioning holes (22).

4. The auxiliary frame for the axle welding line according to claim 3, characterized in that: The rotating ring (5) is provided with an indicating arrow (52), the transport frame (2) is provided with a mark (23), the mark (23) corresponds to different second positioning holes (22), and when the indicating arrow (52) points to different marks (23), the positioning pin (7) can pass through the first positioning hole (21) and the selected second positioning hole (22).

5. The auxiliary frame for the axle welding line according to claim 3, characterized in that: According to the welding process requirements of different vehicle axles, there are multiple types of rotating rings (5), and the second positioning holes (22) on the rotating rings (5) of different types are arranged at different positions.

6. The auxiliary frame for the axle welding line according to claim 1, characterized in that: The rotating ring (5) partially extends out of the mounting hole (4), and a detection unit is also provided on the auxiliary frame for the axle welding assembly line. The detection unit cooperates with the portion of the rotating ring (5) extending out of the mounting hole (4) to detect whether the positioning pin (7) is installed in the second positioning hole (22).

7. The auxiliary frame for the axle welding line according to claim 6, characterized in that: The detection unit comprises A driving motor (81) is arranged on the transport frame (2); A driving wheel (82) is arranged on the output shaft of the driving motor (81), and the outer wall of the driving wheel (82) and the part of the rotating ring (5) extending out of the mounting hole (4) are frictionally driven; By starting the driving motor (81), the driving wheel (82) rubs against the outer wall of the rotating ring (5). If the rotating ring (5) rotates accordingly, it means that the positioning pin (7) is not installed in the second positioning hole (22), the axle fixation fails, and the welding operation cannot be performed. The problem must be corrected and the processing can only be continued after the fixation is completed. If the rotating ring (5) does not rotate accordingly, it means that the positioning pin (7) is installed in the second positioning hole (22), the axle fixation is successful, and the next step of welding operation is performed.

8. The auxiliary frame for the axle welding line according to claim 7, characterized in that: The transport frame (2) is provided with two mutually parallel outward convex sliding bars (24), a slide plate (25) is installed on the outward convex sliding bar (24), and a return spring (26) is provided on the slide plate (25); A slideway (27) cooperating with the outwardly convex sliding strip (24) is provided on one side of the slide plate (25); the cross-sections of the outwardly convex sliding strip (24) and the slideway (27) are both in the shape of an inverted "convex" character, and the width of the inverted "convex" character is smaller on the side close to the surface of the transport rack (2); The driving motor (81) is fixedly arranged on the slide plate (25); The two ends of the return spring (26) are respectively connected to the slide plate (25) and the outer wall of the transport frame (2), thereby pushing the drive motor (81) toward the outer wall of the rotating ring (5).

9. The auxiliary frame for the axle welding line according to claim 7, characterized in that: The outer wall of the portion of the rotating ring (5) extending out of the mounting hole (4) is provided with anti-slip grooves.

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