A battery tray lifting lug welding jig

Abstract

The utility model discloses a battery tray technical field's, a kind of battery tray lifting lug welding jig, including battery tray fixed base and lifting lug, the upper wall of battery tray fixed base is equipped with threaded hole, fixed seat is installed in screw hole and is screwed, the center of fixed seat upper wall is equipped with guide rod, lifting lug is sleeved on the outside of guide rod by the hole on itself, the outside of guide rod is equipped with guide mechanism, and guide mechanism includes first fixed ring, second fixed ring, fixed cylinder, hydraulic drive rod, connecting ring and rubber arc petal, the cooperation of the threaded hole of the fixed seat and battery tray fixed base upper, and the sleeving of guide rod to lifting lug, the accurate positioning of lifting lug is realized, ensure that welding position is accurate, simultaneously its guide rod outside is also equipped with the guide mechanism that can be adaptively adjusted according to lifting lug hole size, so that it can be positioned to different specifications of lifting lug by the device, improve the applicability of the device, and also can effectively reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of battery tray technology, specifically to a welding fixture for battery tray lifting lugs. Background Technology

[0002] The battery tray, also known as the battery box, battery bracket, or battery lower box, is the skeleton structure of the battery system of new energy vehicles. It is mainly used to support components such as battery modules, cooling systems, and circuits, and to provide physical protection and safety support for the battery. Existing battery trays are all fixed to the vehicle chassis by inserting bolts and other fastening components into the lifting lugs.

[0003] However, the welding fixtures used for welding the lifting lugs on existing battery trays are not adjustable and can only be used for welding a single type of lifting lug. Their applicability is poor, and special fixtures need to be provided for different types of lifting lugs during production, which increases production costs. Utility Model Content

[0004] The purpose of this utility model is to provide a welding fixture for battery tray lifting lugs, in order to solve the problem mentioned in the background art that the existing welding fixtures used for welding lifting lugs on battery trays cannot be adjusted and can only be applied to welding a single type of lifting lug, resulting in poor applicability. During production, special fixtures need to be equipped for different types of lifting lugs, which leads to increased production costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery tray lifting lug welding fixture, comprising a battery tray fixing base and a lifting lug, wherein the upper wall of the battery tray fixing base is provided with a threaded hole, the threaded hole corresponding to the hole position when the battery tray is installed on the vehicle, and a fixing seat is screwed into the threaded hole;

[0006] A guide rod is installed at the center of the upper wall of the fixed base, and the lifting lug is fitted onto the outside of the guide rod through a hole on its own. A guide mechanism is installed on the outside of the guide rod.

[0007] The guiding mechanism includes a first fixed ring, a second fixed ring, a fixed cylinder, a hydraulic drive rod, a connecting ring, and a rubber arc-shaped flap. The first fixed ring and the second fixed ring are both fixedly installed on the outer side of the guide rod. The second fixed ring is located below the first fixed ring. A fixed cylinder is installed on the outer wall of the second fixed ring. A hydraulic drive rod is rotatably installed inside the fixed cylinder. A connecting ring is installed at the output end of the hydraulic drive rod. One end of the rubber arc-shaped flap is fitted to the side wall of the connecting ring, and the other end of the rubber arc-shaped flap is fitted to the side wall of the first fixed ring.

[0008] As a preferred embodiment of this utility model, the fixing seat includes a seat body and a screw rod. The screw rod is installed at the center of the lower wall of the seat body and can be screwed into a threaded hole. The guide rod is fixedly installed at the center of the upper wall of the seat body.

[0009] As a preferred embodiment of this utility model, a connecting frame is installed on the side wall of the connecting ring, and a rolling wheel is installed on the inner side wall of the connecting frame, the rolling wheel being able to fit against the inner wall of the lifting lug hole.

[0010] As a preferred embodiment of this utility model, it further includes a support plate, wherein a sliding sleeve is inserted and installed at the center of the support plate, the sliding sleeve is sleeved on the outside of the guide rod, and a positioning bolt is screwed into the side wall of the sliding sleeve, the positioning bolt being able to fit against the side wall of the guide rod.

[0011] As a preferred embodiment of this invention, a polyester film is attached to the outer wall of the rubber arc-shaped flap.

[0012] As a preferred embodiment of this utility model, a rubber pad is fitted to the end of the positioning bolt, and the rubber pad can fit against the outer wall of the guide rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This device achieves precise positioning of the lifting lugs by using the engagement of the fixed base with the threaded holes on the battery tray fixed base and the sleeve of the guide rod on the lifting lugs, ensuring accurate welding position. At the same time, the guide rod is also equipped with a guide mechanism that can be adaptively adjusted according to the size of the lifting lug hole, enabling the device to position lifting lugs of different specifications, improving the applicability of the device, and effectively reducing production costs.

[0015] Meanwhile, after the lifting lugs are fitted onto the outside of the guide mechanism, the position of their holes will not shift, ensuring that the battery tray can be smoothly installed on the external vehicle later. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this patent;

[0017] Figure 2 This is a schematic diagram of the support plate structure of this patent;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the guide mechanism of this patent.

[0019] In the diagram: 1. Fixed base, 2. Lifting lug, 3. Threaded hole, 4. Fixed seat, 41. Seat body, 42. Screw, 5. Guide rod, 6. Guide mechanism, 61. First fixed ring, 62. Second fixed ring, 63. Fixed cylinder, 64. Hydraulic drive rod, 65. Connecting ring, 66. Rubber arc-shaped flap, 7. Connecting frame, 8. Rolling wheel, 9. Support plate, 10. Sliding sleeve, 11. Positioning bolt, 12. Polyester film, 13. Rubber pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution:

[0022] In this technical solution, a battery tray lifting lug welding fixture includes a battery tray fixing base 1 and a lifting lug 2. A cylinder clamping structure is provided above the battery tray fixing base 1, which can fix the battery tray to be processed above the battery tray fixing base 1. A threaded hole 3 is provided on the upper wall of the battery tray fixing base 1. The threaded hole 3 corresponds to the hole position when the battery tray is installed on the car. A fixing seat 4 is screwed into the threaded hole 3. Since the threaded hole 3 corresponds to the hole position when the battery tray is installed on the car, the position of the lifting lug 2 can be accurately positioned by the guide mechanism 6 on the fixing seat 4.

[0023] A guide rod 5 is installed at the center of the upper wall of the fixed base 4. The lifting lug 2 is fitted onto the outside of the guide rod 5 through a hole on its own. A guide mechanism 6 is installed on the outside of the guide rod 5.

[0024] The guiding mechanism 6 includes a first fixing ring 61, a second fixing ring 62, a threaded cylinder 63, a bolt 64, a connecting ring 65, and a rubber arc-shaped flap 66. The first fixing ring 61 and the second fixing ring 62 are both fixedly mounted on the outer side of the guide rod 5. The second fixing ring 62 is located below the first fixing ring 61. A fixing cylinder 63 is installed on the outer wall of the second fixing ring 62. A hydraulic drive rod 64 is rotatably mounted inside the fixing cylinder 63. The position of the connecting ring 65 can be adjusted via the hydraulic drive rod 64, allowing it to adapt to the size of the hole in the lifting lug 2. After adjustment, the connecting ring 65 can fit against the inner wall of the hole in the lifting lug 2, thereby positioning the lifting lug 2. The output end of the hydraulic drive rod 64 is installed with… There is a connecting ring 65, the outer wall of which is arc-shaped to avoid interference or scratching of the inner wall of the hole of the lifting ring 2 when it is in contact with the hole of the lifting ring 2. At the same time, multiple sets of the fixing cylinder 63, hydraulic drive rod 64, connecting ring 65 and rubber arc-shaped petals 66 are provided in this device. There are four sets in total, located in the front, back, left and right directions of the second fixing ring 62. One end of the rubber arc-shaped petal 66 is attached to the side wall of the connecting ring 65, and the other end of the rubber arc-shaped petal 66 is attached to the side wall of the first fixing ring 61. The function of the four rubber arc-shaped petals 66 in this device is similar to a conical sleeve that is narrow at the top and wide at the bottom, so that when the lifting lug 2 is sleeved on the outside, it can guide the tilted lifting lug 2 back to the correct position.

[0025] In addition, its four sets of hydraulic drive rods 64 can be pushed out or retracted synchronously. A four-way hydraulic synchronous flow divider valve is connected to the cylinders of the four hydraulic drive rods 64 to ensure that the flow rate of the four hydraulic cylinders is consistent. When the hydraulic pump is started, the oil enters the four hydraulic cylinders through the synchronous flow divider valve. A pressure sensor is installed in the oil circuit of each hydraulic cylinder to monitor the pressure change in real time. The PLC controller adjusts the output of the hydraulic pump according to the pressure feedback to achieve pressure balance.

[0026] The specific process is as follows: the pressure sensor detects the pressure of each cylinder in real time. When the deviation exceeds ±0.5MPa, the PLC automatically adjusts and the hydraulic drive rod 64 pushes the connecting ring 65 to move synchronously until it contacts the inner wall of the hole of the lifting lug 2. After reaching the set pressure (e.g., 8MPa), the hydraulic system maintains and locks the pressure.

[0027] In some technical solutions, the fixing seat 4 includes a seat body 41 and a screw 42. The screw 42 is installed at the center of the lower wall of the seat body 41. The screw 42 can be screwed into the threaded hole 3. The fixing seat 4 is installed by the screw 42, which makes it easy to install and remove the fixing seat 4. The guide rod 5 is fixedly installed at the center of the upper wall of the seat body 41.

[0028] In some technical solutions, a connecting frame 7 is installed on the side wall of the connecting ring 65, and a rolling wheel 8 is installed on the inner side wall of the connecting frame 7. The rolling wheel 8 uses rolling friction to replace sliding friction, reducing the resistance when installing the lifting lug 2. The rolling wheel 8 can fit against the inner wall of the hole of the lifting lug 2.

[0029] In some technical solutions, a support plate 9 is also included. A sliding sleeve 10 is inserted and installed at the center of the support plate 9. The sliding sleeve 10 is sleeved on the outside of the guide rod 5. A positioning bolt 11 is screwed into the side wall of the sliding sleeve 10. The positioning bolt 11 can fit against the side wall of the guide rod 5.

[0030] The support plate 9 slides with the guide rod 5 through the sliding sleeve 10 and is then locked by the positioning bolt 11. It can accommodate lifting lugs 2 of different thicknesses, with an adjustment range of 30-80mm. The support plate 9 provides bottom support during the welding process, and the rubber pad 13 increases friction to prevent slippage.

[0031] In some technical solutions, a polyester film 12 is attached to the outer wall of the rubber arc-shaped flap 66; the polyester film 12 has a smooth surface and good wear resistance, so that the hanging lug 2 will not get stuck when it is assembled.

[0032] In some technical solutions, a rubber pad 13 is fitted to the end of the positioning bolt 11. The rubber pad 13 can fit against the outer wall of the guide rod 5. The rubber pad 13 increases the friction and improves the stability of the support plate 9.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding fixture for battery tray lifting lugs, comprising a battery tray fixing base (1) and lifting lugs (2), characterized in that: The upper wall of the battery tray fixing base (1) is provided with a threaded hole (3), which corresponds to the hole position of the battery tray when it is installed on the car. A fixing seat (4) is screwed into the threaded hole (3). A guide rod (5) is installed at the center of the upper wall of the fixed base (4). The lifting lug (2) is fitted onto the outside of the guide rod (5) through a hole on its own. A guide mechanism (6) is installed on the outside of the guide rod (5). The guiding mechanism (6) includes a first fixing ring (61), a second fixing ring (62), a fixing cylinder (63), a hydraulic drive rod (64), a connecting ring (65), and a rubber arc-shaped flap (66). The first fixing ring (61) and the second fixing ring (62) are both fixedly installed on the outer side of the guide rod (5). The second fixing ring (62) is located below the first fixing ring (61). The outer side wall of the second fixing ring (62) is fitted with a fixing cylinder (63). The fixing cylinder (63) is installed inside the fixing cylinder (63). The output end of the hydraulic drive rod (64) is fitted with a connecting ring (65). One end of the rubber arc-shaped flap (66) is fitted to the side wall of the connecting ring (65). The other end of the rubber arc-shaped flap (66) is fitted to the side wall of the first fixing ring (61).

2. The battery tray lifting lug welding fixture according to claim 1, characterized in that: The fixed seat (4) includes a seat body (41) and a screw (42). The screw (42) is installed at the center of the lower wall of the seat body (41). The screw (42) can be screwed into the threaded hole (3). The guide rod (5) is fixedly installed at the center of the upper wall of the seat body (41).

3. The battery tray lifting lug welding fixture according to claim 1, characterized in that: The connecting ring (65) has a connecting frame (7) installed on its side wall, and a rolling wheel (8) is installed on the inner side wall of the connecting frame (7). The rolling wheel (8) can fit against the inner wall of the hole of the lifting lug (2).

4. The battery tray lifting lug welding fixture according to claim 1, characterized in that: It also includes a support plate (9), a sliding sleeve (10) is inserted and installed at the center of the support plate (9), the sliding sleeve (10) is sleeved on the outside of the guide rod (5), and a positioning bolt (11) is screwed into the side wall of the sliding sleeve (10), the positioning bolt (11) can fit against the side wall of the guide rod (5).

5. A battery tray lifting lug welding fixture according to claim 1, characterized in that: A polyester film (12) is attached to the outer wall of the rubber arc-shaped flap (66).

6. A battery tray lifting lug welding fixture according to claim 4, characterized in that: A rubber pad (13) is fitted to the end of the positioning bolt (11), and the rubber pad (13) can fit against the outer wall of the guide rod (5).

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