Drop device for detecting looseness of active substance of polar plate

Abstract

A falling device for looseness detection of polar plate active substances comprises a bottom plate, four vertical rods are fixed to the bottom plate through bolts, the vertical rods are sleeved with movable sleeves, the movable sleeves are connected with inner jacking screws through threads, the inner side ends of the inner jacking screws act on the peripheries of the vertical rods, and side plates are welded to the inner side ends of the movable sleeves located on the same side. And end plates are mounted at the two ends between the side plates through screws. Two pairs of L-shaped arms are arranged at the two ends of the side plate in a penetrating mode, rolling wheels are rotationally arranged at the inner side ends of each pair of L-shaped arms, outer end plates are welded to the outer side ends of each pair of L-shaped arms, and the outer end plates are located on the outer side of the side plate. According to the utility model, test detection at different heights can be carried out as required, and the balance of the polar plate can be ensured when the polar plate is placed, so that the polar plate is in front or back contact with marble when falling off, and the detection accuracy is improved. In addition, a falling test can be conveniently carried out, and the postures of the polar plates in the falling process can be ensured by cancelling support on the polar plates.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid batteries, and in particular to a drop test device for detecting the brittleness of active material on electrode plates. Background Technology

[0002] Currently, the strength of electrode plates is tested by drop strength. The national standard GB / T23636-2017, section 4.2.1, clause 7, stipulates that "according to test 6.3.b)c, the amount of active material detached from each plate shall not exceed 1% of the total weight." Section 6.3.b) further specifies "Determination of active material friability of electrode plates: Two electrode plates are randomly selected from the sample and weighed. They are then dropped freely from a height of 1m onto a flat cement surface, three times per plate for a total of six drops, alternating between different surfaces. The mass of the active material detached from the two plates is weighed, and the average mass of the detached active material from each plate is calculated to determine the degree of damage." However, drop testing of electrode plates using the methods specified in the national standard has drawbacks. The attitude of the electrode plate during the drop is difficult to control, making it impossible to ensure that the front or back of the plate contacts the ground. Instead, the plate may drop vertically, leading to inaccurate testing. Repeated experiments revealed that this was caused by the operator's poor balance when holding the electrode plate. Therefore, ensuring the balance and stability of the electrode plate when it falls is of great significance. Utility Model Content

[0003] This invention provides a drop device for detecting the brittleness of active material on electrode plates, thereby overcoming the shortcomings of the prior art and solving the problem that the drop posture of the electrode plate cannot be guaranteed when it falls.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A drop test device for detecting the brittleness of active material on an electrode plate includes a base plate, four vertical rods fixed to the base plate by bolts, movable sleeves fitted on the vertical rods, and inner screws connected to the movable sleeves by threads. The inner end of the inner screws acts on the outer periphery of the vertical rods. Side plates are welded to the inner end of the movable sleeves on the same side, and end plates are installed at both ends of the side plates by screws.

[0006] Two pairs of L-shaped arms are threaded through both ends of the side plate. Each pair of L-shaped arms has a roller rotating on its inner end, and an outer end plate is welded to the outer end of each pair of L-shaped arms. The outer end plate is located on the outer side of the side plate.

[0007] Furthermore, a marble countertop is placed on the base.

[0008] Furthermore, the inner wall of the side panel is fitted with a concave part by screws.

[0009] Furthermore, guide rods are inserted through both ends of the outer end plate. The inner ends of the guide rods are threaded to the side plate, and the outer ends of the guide rods are provided with end caps. A spring is sleeved on the guide rod and is located between the outer end plate and the side plate. A protrusion is welded to the outer end plate. An upper seat is provided above the outer end plate and is installed on the side plate with screws. An L-shaped plate is installed on the outer end of the upper seat with screws. A movable rod is inserted through the upper end of the L-shaped plate, and the lower end of the movable rod is inserted into the protrusion. A retaining ring is fixed to the movable rod with a pin. The retaining ring is located above the upper seat. A locking spring is sleeved on the movable rod and is located between the retaining ring and the horizontal section of the L-shaped plate. An upper pull block is fixed to the upper end of the movable rod with a pin. An inner shaft is welded to the upper pull block. A rotating support plate is rotatably mounted on the inner shaft. The lower end of the rotating support plate acts on the upper wall of the horizontal section of the L-shaped plate. A limit nut is threaded to the outer end of the inner shaft and is located outside the rotating support plate.

[0010] Furthermore, an oblong hole is provided on the outer end of the rotating support plate, and an outward guide rod is welded on one of the end plates. An outward pull end plate is movably provided on the outward guide rod. Outward pull arms are bent at both ends of the outward pull end plate. A pair of pull rods are connected to the outward pull arms by threads, and the inner ends of the pull rods pass through the oblong hole.

[0011] The advantages of the above technical solution are:

[0012] This invention allows for testing at different heights as needed, and ensures the balance of the electrode plate during placement to guarantee that it contacts the marble face-up or face-down upon drop, thereby improving testing accuracy. Furthermore, drop tests are convenient because the electrode plate's orientation can be controlled by removing the support. Attached Figure Description

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0014] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0015] Figure 2 A magnified view of point A is shown.

[0016] Figure 3 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0017] Figure 4 A magnified view of point B is shown. Detailed Implementation

[0018] like Figures 1-4As shown, a drop test device for detecting the brittleness of active material on an electrode plate includes a base plate 1, on which a marble tabletop is placed. Four vertical rods 2 are fixed to the base plate 1 by bolts. Movable sleeves 3 are fitted onto the vertical rods 2. An inner screw is threaded onto the movable sleeve 3. The inner end of the inner screw acts on the outer periphery of the vertical rod 2. A side plate 30 is welded to the inner end of the movable sleeve 3 on the same side. A concave part 32 is installed on the inner wall of the side plate 30 by screws. The concave part 32 limits the two sides of the electrode plate to ensure the balance of the electrode plate during drop. End plates 31 are installed at both ends of the side plates 30 by screws. The end plates 31 limit the two ends of the electrode plate.

[0019] Two pairs of L-shaped arms 5 are threaded through both ends of the side plate 30. Each pair of L-shaped arms 5 has a roller rotating on its inner end, and an outer end plate 50 is welded to the outer end of each pair of L-shaped arms 5. The outer end plate 50 is located on the outer side of the side plate 30.

[0020] In this embodiment, during operation, the operator first adjusts the height of the side plate 30 according to the drop height of the electrode plate so that the L-shaped arm 5 is at the required height. Then, the height of the side plate 30 is locked by the inner top screw, thereby improving the operability and applicability during the drop test.

[0021] Then, the operator pulls the L-shaped arm 5 outwards simultaneously. During the pulling process, rollers are installed to avoid friction between the L-shaped arm 5 and the electrode plate, which could affect the pulling out of the L-shaped arm 5. When the L-shaped arm 5 moves outwards, it facilitates the electrode plate falling downwards onto the marble tabletop, where the looseness of the active material on the electrode plate is then measured.

[0022] In some embodiments, guide rods 51 are provided at both ends of the outer end plate 50 of the drop device for detecting the looseness of the active material on the electrode plate. The inner ends of the guide rods 51 are threaded to the side plate 30, and the outer ends of the guide rods 51 are provided with end caps 52. A spring 53 is sleeved on the guide rods 51 and is located between the outer end plate 50 and the side plate 30. A protrusion 54 is welded on the outer end plate 50, and an upper seat 57 is provided above the outer end plate 50. The upper seat 57 is installed on the side plate 30 by screws, and an L-shaped plate 56 is installed on the outer end of the upper seat 57 by screws. A movable rod 55 is provided at the upper end of the L-shaped plate 56. The lower end of rod 55 is inserted into protrusion 54. The movable rod 55 is fixed to retaining ring 70 by a pin. Retaining ring 70 is located above upper seat 57. Locking spring 58 is sleeved on movable rod 55. Locking spring 58 is located between retaining ring 70 and horizontal section of L-shaped plate 56. Pull block 59 is fixed to upper end of movable rod 55 by pin. Inner shaft 60 is welded to pull block 59. Rotating support plate 61 is rotatably mounted on inner shaft 60. The lower end of rotating support plate 61 acts on upper wall of horizontal section of L-shaped plate 56. Limit nut is threaded to the outer end of inner shaft 60. Limit nut is located outside rotating support plate 61. The outer end of the rotating support plate 61 is provided with a waist-shaped hole 62. A protruding guide rod 40 is welded on one of the end plates 31. An outer pull end plate 4 is movably provided on the protruding guide rod 40. The two ends of the outer pull end plate 4 are bent with outer pull arms 41. A pair of pull rods 42 are threadedly connected to the outer pull arms 41. The inner ends of the pull rods 42 pass through the waist-shaped hole 62.

[0023] In the solution provided in this embodiment, when a drop test is conducted, the outer pull end plate 4 can be pulled outward to move the outer pull arm 41. The movement of the outer pull arm 41 will act on the waist-shaped hole 62 through the pull rod 42 on it, thereby causing the rotating support plate 61 to rotate around the inner shaft 60. During rotation, its lower end will act on the upper wall of the horizontal section of the L-shaped plate 56, thereby causing the movable rod 55 to move upward and the locking spring 58 to be in a compressed state. The upward movement of the movable rod 55 will cause its lower end to be pulled out from the protrusion 54. Then, the outer end plate 50 and the L-shaped arm 5 will move outward under the action of the spring 53, thereby causing the L-shaped arm 5 and the roller to move outward, thereby canceling the support of the roller. Then, the electrode plate will fall downward onto the marble table surface by its own gravity, thereby achieving the drop test detection of the electrode plate.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A drop test device for detecting the brittleness of active materials on electrode plates, characterized in that, It include the bottom plate (1), the bottom plate (1) is fixed with four vertical rods (2) by bolt, the vertical rod (2) is set with movable sleeve (3), the movable sleeve (3) is connected with the inner top screw by thread, the inner side end of the inner top screw acts on the outer periphery of the vertical rod (2), the inner side end of the movable sleeve (3) on the same side is welded with the side plate (30), the both ends between the side plate (30) are installed with the end plate (31) by screw; The both ends of the side plate (30) are provided with two pairs of L-shaped arms (5), the inner side end of each pair of L-shaped arms (5) is rotatably provided with a roller, and the outer side end of each pair of L-shaped arms (5) is welded with an outer end plate (50), and the outer end plate (50) is located on the outer side of the side plate (30).

2. The polar plate active material crumb detection falling device according to claim 1, characterized by, The bottom plate (1) is placed with a marble table top.

3. The polar plate active material crumb detection falling device according to claim 1, characterized by, The inner wall of the side plate (30) is provided with a concave part (32) by screw.

4. The polar plate active material crumb detection falling device according to claim 1, characterized by, The both ends of the outer end plate (50) are provided with guide rods (51), the inner side end of the guide rod (51) is connected with the side plate (30) by thread, the outer side end of the guide rod (51) is provided with an end cap (52), the guide rod (51) is provided with a spring (53), the spring (53) is located between the outer end plate (50) and the side plate (30), the outer end plate (50) is welded with a convex part (54), the upper side of the outer end plate (50) is provided with an upper seat (57), the upper seat (57) is installed on the side plate (30) by screw, the outer side end of the upper seat (57) is provided with an L-shaped plate (56) by screw, the upper end of the L-shaped plate (56) is provided with a movable rod (55), the lower end of the movable rod (55) is inserted into the convex part (54), the movable rod (55) is fixed with a stop ring (70) by pin, the stop ring (70) is located above the upper seat (57), the movable rod (55) is provided with a locking spring (58), the locking spring (58) is located between the stop ring (70) and the horizontal section of the L-shaped plate (56), the upper end of the movable rod (55) is fixed with an upper pulling block (59) by pin, the upper pulling block (59) is welded with an inner shaft (60), the inner shaft (60) is rotatably provided with a rotating support plate (61), the lower end of the rotating support plate (61) acts on the upper wall of the horizontal section of the L-shaped plate (56), the outer side end of the inner shaft (60) is connected with a limiting nut by thread, and the limiting nut is located on the outer side of the rotating support plate (61).

5. The polar plate active material crumb detection drop apparatus according to claim 4, characterized by, The outer side end of the rotating support plate (61) is provided with a waist-shaped hole (62), one of the end plates (31) is welded with a pair of outward extending guide rods (40), the outward extending guide rods (40) are movably provided with an outward pulling end plate (4), the both ends of the outward pulling end plate (4) are bent with outward pulling arms (41), the outward pulling arms (41) are connected with a pair of pulling rods (42) by thread, and the inner side end of the pulling rod (42) is provided in the waist-shaped hole (62).

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