Battery box bearing beam assembling, welding and detecting tool

Abstract

The utility model discloses an assembling, welding and detecting tool for a bearing beam of a battery box. The assembling, welding and detecting tool comprises a positioner assembly, a tool platform, a first limiting seat, a second limiting seat, a third limiting seat, a fourth limiting seat and a pressing device. The integrated tool is arranged in a bilateral symmetry mode, the left side main beam and the right side main beam can be synchronously installed, welded and detected, and time is saved; according to the utility model, the welding shape adjusting quantity is reduced, and the post-welding deformation is small; the flatness of the lifting lug is directly detected after the lifting lug is installed and welded, the flatness of the lifting lug of the main cross beam is ensured to meet the final loading requirement, the production efficiency is also improved, and the cost is reduced and the efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of forging tooling technology, and relates to a production tooling for railway passenger car battery boxes, specifically to a tooling for welding and inspecting the load-bearing beam of an acidic horizontal battery box. Background Technology

[0002] The battery box is the power source for emergency ventilation and lighting in subway cars, providing emergency power to the vehicle in case of emergencies. Subway car battery boxes contain various types of batteries, which can be categorized as horizontal or vertical based on their installation method.

[0003] The main crossbeams connecting the battery box to the subway car body are called load-bearing beams. The structure of the main crossbeams is as follows: Figure 1 As shown, it is composed of a left main crossbeam A, a right main crossbeam B, a lifting lug D, and a mounting base C, all welded together.

[0004] The battery box is installed under the subway car body. It is connected and fixed to the side beam of the base frame by bolts through the mounting holes of the mounting bracket on the load-bearing beam. Therefore, the hole spacing of the lifting lugs of the load-bearing beam and the mounting holes of the mounting bracket is relatively strict.

[0005] Traditional battery box load-bearing beams are assembled and welded on a platform without tooling positioning and constraints, resulting in large deformation after welding. The flatness of the four lifting lugs connecting the load-bearing beam to the vehicle body does not meet the requirements, and overall machining is required after welding. Specifically, the following problems exist:

[0006] (i) The left and right main crossbeams of the traditional battery box load-bearing beam are assembled and welded on the platform. The deformation during welding in the free state is large and the assembly requires marking, which takes a long time.

[0007] (ii) In order to meet the overall flatness requirements of the lifting lugs, the left and right main crossbeams of the traditional battery box bearing beam need to be machined as a whole after the welding is completed, which is costly.

[0008] (iii) The left and right main crossbeams of the traditional battery box load-bearing beam also need to be assembled with another longitudinal beam and the flatness of the lifting lugs needs to be checked on the testing platform;

[0009] In summary, it is particularly important to design an integrated tooling for welding and testing of the battery box load-bearing beam. Summary of the Invention

[0010] In view of the shortcomings and deficiencies of the existing technology, the main purpose of this utility model is to provide a tooling for welding and inspecting the load-bearing beam of a battery box.

[0011] This integrated tooling is designed for the assembly and inspection of the battery box support beams of acidic horizontal batteries. Using this tooling, the support beams can be flipped and welded during production. Multiple limit seats and clamping devices are used to reduce the amount of welding adjustment, resulting in minimal deformation after welding. This ensures that the flatness of the lifting lugs of a single main crossbeam (left or right main crossbeam) meets the final vehicle loading requirements, thereby improving production efficiency and reducing costs.

[0012] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0013] A welding and inspection fixture for a battery box supporting beam is provided. The fixture is symmetrically arranged vertically and vertically to produce two main crossbeams simultaneously. It includes a fixture platform, a positioner assembly, a first limit seat, a second limit seat, a third limit seat, a fourth limit seat, and a clamping device. The positioner assembly is located at the center of both ends of the fixture platform to drive the fixture platform to rotate.

[0014] The tooling platform has a second and a fourth limiting seat at both ends, which are perpendicular to each other and together limit the lifting lugs of the main crossbeam. The second limiting seat is used to check the flatness of the lifting lugs after welding. A first limiting seat is set on the outside of the tooling platform to limit the main crossbeam from the outside. A third limiting seat is set on the inside of the tooling platform, which is opposite to the first limiting seat and limits the mounting seat of the main crossbeam from the inside. The clamping device is located on the inside of the tooling platform and between the third limiting seats to clamp the main crossbeam from the inside.

[0015] Furthermore, the second limiting seat is configured as a positioning plate with holes, and the bottom end face of the lifting lug is positioned from bottom to top by bolts.

[0016] Furthermore, the second limiting seat is used to inspect the flatness of the lifting lug after assembly and welding: the main crossbeam that has been assembled and adjusted is placed back onto the second limiting seat, the bottom surface of the lifting lug contacts the surface of the positioning plate without needing to be pressed, and the gap between the two surfaces is checked. A gap of less than 1mm is considered qualified.

[0017] Furthermore, the fourth limiting seat includes a connecting base plate, a stiffening plate, and a positioning side plate. The stiffening plate and the positioning side plate are erected on the connecting base plate. The positioning side plate is perpendicular to the stiffening plate. The positioning side plate is erected on one end of the connecting base plate. The lifting lug uses the positioning side plate as a backing. During assembly, the inner side of the lifting lug is close to and abuts against the positioning side plate.

[0018] Furthermore, the third limiting seat includes a connecting plate, a limiting plate, a side limiting plate, and a pressing structure. The two limiting plates are vertically arranged opposite each other on the connecting plate, and the top of the two limiting plates are suspended and connected to the limiting plate. The limiting plate is provided with screw holes. The limiting plate and the side limiting plate jointly position the mounting seat, and the mounting seat is fixed to the limiting plate with bolts. A pressing structure is provided below the limiting plate, and the pressing structure presses and fixes the main crossbeam from the inside.

[0019] Furthermore, the clamping structure includes a support rod and a threaded rod, with a nut fixed to the side of the support rod, the threaded rod being inserted into the fixed nut, and the end of the threaded rod pressing against the inner side of the main crossbeam.

[0020] Furthermore, the first limiting seat includes a base plate, a supporting stiffener and a side plate. The supporting stiffener and the side plate are erected on the base plate and are perpendicular to each other. The side plate is erected on one end of the base plate. The main crossbeam uses this side plate as a backing, and the outer side of the main crossbeam is pressed against this side plate during assembly.

[0021] Furthermore, the clamping device includes a support plate and a clamping rod. The support plate is vertically mounted on the tooling platform, and a nut is fixed at the top of the support plate. The clamping rod is threaded and fits into the fixed nut, and the end of the clamping rod presses against the inner side of the main crossbeam.

[0022] Furthermore, the tooling platform is configured as a plate-shaped structure, symmetrical in all directions; the tooling platform includes a base frame and a bearing plate, the base frames are connected to each other to form a stable quadrilateral structure, and the bearing plate is placed on top of the base frame and on both sides of the base frame.

[0023] Furthermore, the base frame is provided with longitudinal rectangular tubes and transverse rectangular tubes for support.

[0024] The beneficial effects of this utility model are as follows:

[0025] (i) The battery box bearing beam welding and inspection fixture of this utility model is equipped with multiple limit seats, which makes the part positioning fast and accurate, and can be quickly spot welded and fixed, which not only saves time but also ensures the welding quality; it is equipped with a clamping device, so the deformation after welding is also small, reducing the amount of welding adjustment; it can be flipped and welded during the production process, and the front and back sides can be welded in one stop, which reduces the time for transferring and flipping the bearing beam and also reduces the error caused by transfer; in short, the battery box bearing beam welding and inspection fixture of this utility model not only effectively ensures the welding quality but also saves welding time.

[0026] (ii) The battery box bearing beam welding and inspection fixture of this utility model can be used to directly inspect the overall flatness of the lifting lug of a single main crossbeam on the integrated fixture (the same fixture) after welding. It is not necessary to assemble it with another longitudinal beam and inspect the flatness of the lifting lug on the inspection platform, which reduces the number of procedures and saves time.

[0027] (iii) The battery box bearing beam welding and inspection tooling of this utility model can be directly inspected after welding, saving the overall post-weld processing steps.

[0028] (iv) The battery box load-bearing beam welding and inspection fixture of this utility model has low manufacturing cost, is convenient to use, and is practical and reliable. It is suitable for the integrated welding and inspection of battery box load-bearing beams. This fixture can be promoted and used in the railway industry and has broad application prospects. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the battery box's load-bearing beams (composed of main crossbeams);

[0030] Figure 2 This is a schematic diagram of the welding and testing fixture for the battery box load-bearing beam of this utility model.

[0031] Figure 3 This is an enlarged view of the second limiting seat; Figure 4 An enlarged view of the fourth limiting seat;

[0032] Figure 5 This is an enlarged view of the first limiting seat;

[0033] Figure 6 This is an enlarged view of the third limiting seat (without the left main crossbeam A installed);

[0034] Figure 7 A schematic diagram of the left main crossbeam A being installed to limit the third limiting seat;

[0035] Figure 8 This is an enlarged view of the clamping device;

[0036] in:

[0037] Wherein, A - left main crossbeam, B - right main crossbeam, C - mounting base, D - lifting lug;

[0038] 1-First limiting seat, 11-Base plate, 12-Supporting stiffener, 13-Side plate;

[0039] 2-Second limit seat,

[0040] 3-Third limiting seat, 31-Connecting plate, 32-Side limiting plate, 33-Limiting plate, 34-Pressure structure;

[0041] 4-Fourth limiting seat, 41-Connecting base plate, 42-Firming plate, 43-Positioning side plate;

[0042] 5-Composition of the positioner; 6-Tooling platform;

[0043] 7-Clamping device, 71-Support plate, 72-Clamping rod. Detailed Implementation

[0044] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0045] Example 1:

[0046] In this embodiment, the welding and testing fixtures for the battery box load-bearing beams are symmetrically arranged on the left and right (in...). Figure 2 (The two beams are symmetrical from top to bottom). This integrated tooling can produce two main beams at once. That is, using the tooling in this embodiment, the left main beam A and the right main beam B (which are symmetrical to each other) can be welded and inspected simultaneously, saving time.

[0047] Reference Figure 2 As shown, the battery box bearing beam welding and inspection fixture in this embodiment includes a positioner assembly 5, a fixture platform 6, a first limiting seat 1, a second limiting seat 2, a third limiting seat 3, a fourth limiting seat 4, and a clamping device 7.

[0048] The positioner assembly 5 is located at both ends of the tooling platform 6. The positioner assembly 5 can drive the tooling platform 6 to rotate, thereby changing the processing position and increasing the welding speed. The positioner assembly 5 mentioned in this embodiment uses existing technology and will not be described in detail here.

[0049] The tooling platform 6 is configured as a plate-shaped structure, symmetrical in all directions. The tooling platform 6 includes a base frame and a bearing plate. The base frames are connected to each other to form a stable quadrilateral structure. The bearing plate is placed on the top of the base frame and on both sides of the base frame. Preferably, the base frame is supported by longitudinal rectangular tubes and transverse rectangular tubes.

[0050] The tooling platform 6 has a second limiting seat 2 and a fourth limiting seat 4 at both ends of its support plate, which are vertically arranged. When the lifting lug D is placed on the support plate of the tooling platform 6, the end of the lifting lug D is close to the second limiting seat 2 and the fourth limiting seat 4, which together limit and fix the end of the lifting lug D.

[0051] Second limiting seat 2, as shown Figure 3 As shown, the second limiting seat 2 is a positioning plate with holes. A lifting lug D is positioned from the bottom upwards using bolts, with the end face of the lug D pressed against the end face of the positioning plate for positioning. The fourth limiting seat 4 is as follows... Figure 4 As shown, it includes a connecting base plate 41, a stiffening plate 42, and a positioning side plate 43. The stiffening plate 42 and the positioning side plate 43 are vertically arranged on the connecting base plate 41. The positioning side plate 43 is perpendicular to the stiffening plate 42. The positioning side plate 43 is vertically arranged on one end of the connecting base plate 41. The lifting lug D uses the positioning side plate 43 as a backing. During assembly, one side of the lifting lug D is close to and abuts against the positioning side plate 43.

[0052] Among them, multiple first limiting seats 1 are provided on the outer side of the bearing plate of the tooling platform 6 to limit and fix the outer side of the left main crossbeam A and the right main crossbeam B from the outside.

[0053] The left main crossbeam A and the right main crossbeam B are placed on the bearing plate of the tooling platform 6, with the outer sides of the left main crossbeam A and the outer sides of the right main crossbeam B closely abutting and limiting the first limiting seat 1.

[0054] like Figure 5 As shown, the first limiting seat 1 includes a base plate 11, a supporting rib plate 12, and a side plate 13. The supporting rib plate 12 and the side plate 13 are vertically arranged on the base plate 11. The supporting rib plate 12 and the side plate 13 are perpendicular to each other. The side plate 13 is vertically arranged on one end of the base plate 11. The left main crossbeam A and the right main crossbeam B use this side plate 13 as a backing. During assembly, the outer side surface of the left main crossbeam A and the outer side surface of the right main crossbeam B are both closely abutting against the side plate 13.

[0055] Among them, a third limiting seat 3 is provided on the inner side of the bearing plate of the tooling platform 6. The third limiting seat 3 is arranged opposite to the first limiting seat 1. That is, the third limiting seat 3 is located on the inner side of the left main crossbeam A or the right main crossbeam B, and the first limiting seat 1 is located on the outer side of the opposite position of the left main crossbeam A or the right main crossbeam B.

[0056] Specifically, the third limiting seat 3 is located inside the mounting seat C of the left main crossbeam A or the right main crossbeam B, and the third limiting seat 3 limits the mounting seat C from the inside.

[0057] Third limit seat 3, as shown Figure 6 and Figure 7 As shown, the system includes a connecting plate 31, a limiting plate 33, side limiting plates 32, and a clamping structure 34. The connecting plate 31 has two vertically positioned limiting plates 32, with the tops of the two limiting plates 32 suspended and connected to the limiting plates 33. The limiting plates 33 have screw holes. The limiting plates 33 and the side limiting plates 32 are used to position the mounting base C, and bolts are used to clamp the mounting base C to the limiting plates 33. The clamping structure 34 is located below the limiting plates 33. After the outer side of the left main crossbeam A is tightly pressed against the first limiting seat 1, the clamping structure 34 clamps and fixes the left main crossbeam A from the inside.

[0058] The clamping device 7 is located inside the bearing plate of the tooling platform 6 and between the third limit seats 3.

[0059] Clamping device 7 Figure 8 As shown, the fixture includes a support plate 71 and a clamping rod 72. The support plate 71 is vertically mounted on the tooling platform 6, and a nut is fixed to the top of the support plate 71. The clamping rod 72 is threaded and fits into the fixed nut. The end of the clamping rod 72 presses against the inner side of the left main crossbeam A. After the remaining positioning and clamping are completed, the clamping rod 72 is pushed to press and fix the left main crossbeam A from the inside.

[0060] Example 2:

[0061] The process of integrating welding and inspection of the battery box load-bearing beam using the welding and inspection fixture of Example 1 is as follows:

[0062] First, place the lifting lug D on the tooling platform 6, with the end of the lifting lug D closely positioned against the second limit seat 2 and the fourth limit seat 4.

[0063] Next, place the left main crossbeam A and the right main crossbeam B on the tooling platform 6, with their outer sides closely positioned against the first limiting seat 1.

[0064] Then, the mounting base C of the main crossbeam is aligned with the hole of the third limiting seat 3 and assembled, and limited from the inside. At this point, the positioning of the main crossbeam is completed.

[0065] Then, use the clamping device 7 to push and clamp the main crossbeam, lock the clamping device 7, and begin assembly welding;

[0066] Finally, after the assembly welding is completed, the shape is adjusted, and the second limit seat 2 is used to check the flatness requirements of the lifting lugs D at both ends of the main crossbeam: according to... Figure 2 As shown, place the welded and shaped main beam back onto this fixture without clamping. The surface of the lifting lug D should contact the platform surface (specifically, the surface of the second limit seat 2). Use a feeler gauge to check the gap between the two surfaces. If the gap is less than 1mm, it is considered qualified.

[0067] The above description is merely a preferred embodiment of the present utility model and does not constitute a limitation on the scope of protection of the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the scope of protection of the claims of the present utility model.

Claims

1. A battery box carrying beam assembly welding and detection tooling characterized by, The upper and lower symmetrical arrangement of the tooling can simultaneously produce two main cross beams, including a tooling platform, a positioner set, a first limiting seat, a second limiting seat, a third limiting seat, a fourth limiting seat, and a pressing device; The center of the two ends of the tooling platform is provided with a positioner set to drive the tooling platform to overturn; The two ends of the tooling platform are provided with a second limiting seat and a fourth limiting seat arranged perpendicularly to each other, which jointly limit the lifting lugs of the main cross beam, and the second limiting seat is used for inspecting the flatness of the lifting lugs after assembly welding; The outer side of the tooling platform is provided with a first limiting seat for limiting the main cross beam from the outside; the inner side of the tooling platform is provided with a third limiting seat opposite to the first limiting seat, which limits the mounting seat of the main cross beam from the inside; The pressing device is located on the inner side of the tooling platform and between the third limiting seats, and presses the main cross beam from the inside.

2. The battery case carrying beam group welding and detecting tooling according to claim 1, characterized in that, The second limiting seat is provided as a positioning plate, and the positioning plate is provided with a hole, and the bottom end face of the lifting lug is positioned upward from the bottom face through a bolt.

3. The battery case carrying beam group welding and detecting tooling according to claim 2, characterized in that, The second limiting seat is used for inspecting the flatness of the lifting lug after assembly welding: the main cross beam after assembly welding is placed back on the second limiting seat, the bottom face of the lifting lug is in contact with the surface of the positioning plate without the need for pressing, the gap between the two surfaces is detected, and the gap less than 1mm is qualified.

4. The battery case carrying beam group welding and detecting tooling according to any one of claims 1-3, characterized in that, The fourth limiting seat includes a connecting bottom plate, a rib plate, and a positioning side plate, the rib plate and the positioning side plate are vertically arranged on the connecting bottom plate, the positioning side plate is vertically arranged on one end of the connecting bottom plate, the lifting lug is supported by the positioning side plate, and the inner side face of the lifting lug is tightly abutted against the positioning side plate during assembly.

5. The battery case carrying beam group welding and detecting tooling according to any one of claims 1-3, characterized in that, The third limiting seat includes a connecting plate, a limiting plate, a side limiting plate, and a pressing structure, two side limiting plates are vertically arranged on the connecting plate, the top ends of the two side limiting plates are suspendedly connected to the limiting plate, the limiting plate is provided with a screw hole, the limiting plate and the side limiting plate jointly position the mounting seat, and the mounting seat is fixed to the limiting plate by using a bolt; the limiting plate is provided with a pressing structure below, and the pressing structure presses and fixes the main cross beam from the inside.

6. The battery case carrier beam assembly welding and detecting tooling of claim 5, wherein, The pressing structure includes a support rod and a threaded rod, a nut is fixed on the side face of the support rod, the threaded rod is sleeved into the fixed nut, and the end of the threaded rod tightly presses the inner side of the main cross beam.

7. A battery case carrying beam group welding and detecting tool according to any one of claims 1-3, characterized in that, The first limiting seat includes a bottom plate, a support rib plate, and a side plate, the support rib plate and the side plate are vertically arranged on the bottom plate, the side plate is vertically arranged on one end of the bottom plate, the main cross beam is supported by the side plate, and the outer side face of the main cross beam is tightly abutted against the side plate during assembly.

8. The battery case carrying beam group welding and detecting tooling according to any one of claims 1-3, characterized in that, The pressing device includes a support plate and a pressing rod, the support plate is vertically arranged on the tooling platform, a nut is fixed on the top end of the support plate, the pressing rod is provided with a thread and is sleeved into the fixed nut, and the end of the pressing rod tightly presses the inner side of the main cross beam.

9. A battery case carrying beam group welding and detecting tool according to any one of claims 1-3, characterized in that, The tooling platform is provided as a plate structure, which is symmetrical up and down and left and right; the tooling platform includes a base frame and a bearing plate, the base frames are connected to each other to form a stable quadrilateral structure, and the bearing plates are placed above the base frames and at both sides of the base frames.

10. The battery case carrier beam assembly welding and detecting tooling of claim 9, wherein, The base frame is provided with longitudinal rectangular tube and transverse rectangular tube supports.

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