Flatness detection device for battery tray of new energy automobile

Abstract

A new energy automobile battery tray flatness detection device is characterized in that two sides of the upper end face of a rack are respectively provided with two support strips, a plurality of cylinders are arranged below a gap between the two support strips, piston rods of the cylinders are provided with linear displacement sensors through connecting plates, and pull rods of the linear displacement sensors penetrate through the gap between the support strips and are in upward contact with the bottom face of a battery tray. The battery tray flatness detection device changes the current situation of manual detection of the battery tray, detects the flatness of the battery tray by using the contact type linear displacement sensor, and has the advantages of high detection efficiency, accurate detection data, convenience in loading and unloading and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy battery tray processing field, concretely is a new energy automobile battery tray flatness detection device. BACKGROUND

[0002] In new energy automobile, power battery is carried and sealed by aluminum alloy battery tray, so that the battery tray is one of important components in new energy automobile. The battery tray is usually formed by aluminum profile stitch welding into a whole, and the bottom is supported by a welded bottom plate. The bottom plate welded by robot stirring and welding is prone to wave or bending phenomenon due to internal stress generated by cold and hot alternation, especially the two side edges of the battery tray, which need to be closely assembled with the automobile chassis. The battery tray with poor side flatness will hinder the subsequent assembly. Therefore, the flatness of the battery tray is one of its important indicators.

[0003] The conventional detection of the flatness of the battery tray needs to place it on a detection platform, and the quality inspector inserts a plug gauge into the gap between the two side bottom surfaces of the tray and the platform, and observes whether the flatness of the tray meets the requirements with naked eyes. However, the above detection method is time-consuming, and the plug gauge needs to be inserted repeatedly to obtain the specific flatness data of the tray, which is time-consuming and labor-consuming. SUMMARY

[0004] The utility model provides a new energy automobile battery tray flatness detection device, changes the present situation of manual detection battery tray, utilizes contact type straight line displacement sensor to detect battery tray flatness, has detection efficiency is high, detection data accurate and loading and unloading convenient etc. advantage.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A new energy automobile battery tray flatness detection device, two rows of supporting strips are arranged on the upper end surface of the rack, and a plurality of air cylinders are arranged below the interval between the two rows of supporting strips. The piston rod of the air cylinder is connected with a straight line displacement sensor through a connecting plate. The pull rod of the straight line displacement sensor passes through the interval between the supporting strips and contacts the bottom surface of the battery tray upward.

[0007] The position of the straight line displacement sensor corresponds to the assembly point position of the battery tray. The height of the assembly point is read by the sensor, and the data is transmitted to the host computer display. The quality inspector only needs to watch the display to read and record the height data of each point. The standard height is set to 0. If the data shows negative, it is the data of the concave and curved bottom surface of the battery tray. If the data shows positive, it is the data of the convex and curved bottom surface of the battery tray.

[0008] In the non-working state, the piston rod of the double-shaft cylinder sinks, and the upper end of the sensor pull rod is lower than the upper end surface of the support strip; when the battery tray is placed on the frame and positioned, the piston rod of the cylinder rises, and the upper end of the sensor pull rod contacts the bottom surface of the battery tray.

[0009] The material of the support strip is self-lubricating nylon, such as Teflon material, and when the battery tray is placed above, it can be dragged to move, saving the labor of loading and unloading the tray.

[0010] The linear displacement sensor is an automatic reset type linear displacement sensor, and a reset compression spring is sleeved on the pull rod. In the non-contact state, the reset compression spring provides a reset force to extend the pull rod to the longest state, protrude above the upper end surface of the support strip, and ensure that it can touch the bottom surface of the battery tray.

[0011] Positioning pins are arranged on both sides of the frame, and the positioning pins are aligned with the positions of the reference machining holes on both sides of the battery tray. The battery tray is accurately positioned, and the position of the sensor is accurately positioned with the assembly position of the tray.

[0012] A plurality of intermediate supporting plates are arranged in the middle of the frame, and the heights of the intermediate supporting plates are consistent with the height of the support strip. The intermediate supporting plates are used for supporting the middle weight of the battery tray, and the material thereof is also self-lubricating nylon, such as Teflon material, so that the operator can conveniently drag and move the battery tray.

[0013] Rollers are arranged at the ends of the pull rods of the linear displacement sensor. In the process that the ends of the pull rods contact the bottom surface of the battery tray, movement and scratches do not occur.

[0014] The advantages of the utility model are:

[0015] 1. The utility model is special for new energy automobile battery tray flatness detection, and through the detection principle of the linear displacement sensor, the flatness of the bottom surface of the battery tray at all assembly positions can be detected quickly at one time, the detection efficiency is greatly improved, and the quality inspection personnel only need to record the data on the display.

[0016] 2. In the process of loading and unloading the battery tray, the utility model can realize dragging and sliding operation, and will not cause scratches and damage to the bottom of the battery tray, and the difficulty of carrying is reduced. DRAWINGS

[0017] Figure 1 It is a facade structure diagram of the utility model; (not containing a battery tray)

[0018] Figure 2 It is a facade structure diagram of the utility model; (containing a battery tray)

[0019] Figure 3 It is Figure 1 An enlarged structure diagram of the middle I;

[0020] Figure 4 It is the side view structural drawing of the utility model; (not containing battery tray)

[0021] Figure 5 It is the side view structural drawing of the utility model; (containing battery tray)

[0022] Figure 6 It is the component structure drawing of cylinder and linear displacement sensor;

[0023] The serial number and component name in the drawing are: 1-frame; 2-intermediate supporting plate; 3-supporting strip; 4-positioning pin; 5-cylinder; 6-linear displacement sensor; 61-resetting compression spring; 62-roller; 7-battery tray. DETAILED DESCRIPTION

[0024] Example 1

[0025] A new energy automobile battery tray flatness detection device, two supporting strips 3 are arranged on the upper end face of the frame 1 respectively, six cylinders 5 are arranged below the interval between the two supporting strips 3, three cylinders 5 are arranged on each side, a linear displacement sensor 6 is installed on the piston rod of each cylinder through a connecting plate, the pull rod of the linear displacement sensor 6 passes through the interval between the supporting strips 3 and contacts the bottom surface of the battery tray 7 upward.

[0026] The linear displacement sensor 6 is an automatic reset type linear displacement sensor, and the pull rod is sleeved with a resetting compression spring 61.

[0027] The frame 1 is provided with a positioning pin 4 on each side, and the positioning pin 4 is aligned with the position of the reference machining hole on the two sides of the battery tray 7.

[0028] The frame 1 is provided with a plurality of intermediate supporting plates 2 in the middle, and the height of the intermediate supporting plate 2 is consistent with the height of the supporting strip 3.

[0029] The end of the pull rod of the linear displacement sensor 6 is provided with a roller 62.

Claims

1. A new energy vehicle battery tray flatness detection device, characterized in that: Two rows of supporting strips (3) are arranged on both sides of the upper end surface of the rack (1), and a plurality of air cylinders (5) are arranged below the interval between the two rows of supporting strips (3), the air cylinder piston rod is installed through a connecting plate to a linear displacement sensor (6), the pull rod of the linear displacement sensor (6) penetrates through the interval between the supporting strips (3) and upwardly contacts the bottom surface of the battery tray (7).

2. The new energy vehicle battery tray flatness detection device according to claim 1, characterized in that: The linear displacement sensor (6) is an automatic reset type linear displacement sensor, and a reset compression spring (61) is sleeved on the pull rod.

3. The new energy vehicle battery tray flatness detection device according to claim 1, characterized in that: Positioning pins (4) are arranged on both sides of the rack (1), and the positioning pins (4) are aligned with the positions of the reference machining holes on both sides of the battery tray (7).

4. The new energy vehicle battery tray flatness detection device according to claim 1, characterized in that: A plurality of intermediate supporting plates (2) are arranged in the middle of the rack (1), and the height of the intermediate supporting plates (2) is consistent with the height of the supporting strips (3).

5. The new energy vehicle battery tray flatness detection device according to claim 1, characterized in that: Rollers (62) are arranged at the end of the pull rod of the linear displacement sensor (6).

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