Special rack for battery detection and maintenance

Abstract

The utility model discloses a frame special for battery detection and maintenance. The frame comprises a supporting frame and an expansion assembly. The expansion assembly comprises a first expansion piece, a second expansion piece and a first threaded rod. The first expansion piece and the second expansion piece are respectively arranged at the corners of the support frame; the first expansion piece and the second expansion piece are located on the same side of the supporting frame. The first expansion piece and the second expansion piece are connected with the side wall of the supporting frame in a sliding mode. The first threaded rod is provided with two threaded sections in opposite directions, the first expansion piece is in threaded connection with the threaded section in one direction, and the second expansion piece is in threaded connection with the threaded section in one direction of the beam.

Description

Technical Field

[0001] The utility model relates to the field of a battery inspection and repair rack for new energy vehicles, in particular to a special rack for battery inspection and repair. Background Art

[0002] With the rapid development of the new energy vehicle industry and the continuous advancement of battery technology, new energy vehicles have gradually become the mainstream of the market, gradually replacing traditional fuel vehicles. The popularity of new energy vehicles is not only due to the increasing awareness of environmental protection, but also closely related to the transformation of energy structure. As the core component of new energy vehicles, the stability and safety of battery performance directly determine the overall performance and service life of the vehicle. Therefore, battery detection and maintenance technology plays a vital role in the field of new energy vehicle maintenance.

[0003] At present, the batteries of new energy vehicles are generally installed at the bottom of the car. For daily maintenance and repair, the batteries need to be removed and placed on a maintenance rack for inspection or repair so that they can be installed on the car again later. However, due to the significant differences in battery specifications and sizes used in different models, this has brought great inconvenience to maintenance work. The maintenance rack designs currently on the market can often only meet a certain range of battery sizes, and cannot adapt to batteries of different models and specifications.

[0004] In order to solve this problem, the existing practice is usually to increase the size of the maintenance rack as much as possible in the hope of being compatible with more types of batteries. However, this practice not only increases the cost and weight of the maintenance rack, but also in actual use, the maintenance rack is often too large, which often leads to inconvenience in operation and may even affect the efficiency and safety of maintenance. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a special rack for battery detection and maintenance.

[0006] The technical solution adopted by the utility model is:

[0007] A special frame for battery detection and maintenance, comprising a support frame and an expansion component; the expansion component comprises:

[0008] A first extension piece, a second extension piece, and a first threaded rod;

[0009] The first extension piece and the second extension piece are respectively arranged at the corners of the support frame; the first extension piece and the second extension piece are located on the same side of the support frame:

[0010] The first extension piece and the second extension piece are respectively slidably connected to the side walls of the support frame;

[0011] The first threaded rod is provided with two threaded sections in opposite directions, the first extension piece is threadedly connected to the threaded section in one direction, and the second extension piece is threadedly connected to the threaded section in one direction of the beam.

[0012] Preferably, the extension assembly further comprises a third extension piece, a fourth extension piece and a second threaded rod;

[0013] The third extension piece and the fourth extension piece are respectively arranged at the corners of the support frame, and the third extension piece and the fourth extension piece are located on the same side of the support frame;

[0014] The second threaded rod has the same structure as the first threaded rod, and the third extension piece and the fourth extension piece are respectively threadedly connected to two threaded sections in opposite directions on the second threaded rod.

[0015] Preferably, the first extension piece, the second extension piece, the third extension piece and the fourth extension piece are all L-shaped bending pieces, and the first extension piece, the second extension piece, the third extension piece and the fourth extension piece all include a vertical portion and a horizontal portion;

[0016] The horizontal portion of the first extension member and the horizontal portion of the second extension member are respectively threadedly connected to two thread segments in opposite directions on the first threaded rod, and the horizontal portion of the third extension member and the horizontal portion of the fourth extension member are respectively threadedly connected to two thread segments in opposite directions on the second threaded rod;

[0017] The horizontal portion of the first extension member, the horizontal portion of the second extension member, the horizontal portion of the third extension member, and the horizontal portion of the fourth extension member are respectively slidably connected to the support frame.

[0018] Preferably, the extension assembly further comprises a third threaded rod and a fourth threaded rod; the third threaded rod and the fourth threaded rod have the same structure as the first threaded rod;

[0019] The vertical portion of the fourth extension piece and the vertical portion of the first extension piece are respectively threadedly connected with two thread segments in opposite directions on the third threaded rod;

[0020] The vertical portion of the second extension piece and the vertical portion of the third extension piece are respectively threadedly connected to two threaded sections in opposite directions on the fourth threaded rod.

[0021] Preferably, the horizontal portion of the first extension member, the horizontal portion of the second extension member, the horizontal portion of the third extension member, and the horizontal portion of the fourth extension member are respectively slidably connected to the support frame, including:

[0022] A through slot is provided on the side wall of the support frame, and the through slot is provided corresponding to the horizontal portion of the first extension member, the horizontal portion of the second extension member, the horizontal portion of the third extension member, and the horizontal portion of the fourth extension member;

[0023] The inner wall of the through groove is provided with a slide groove, a slider is provided in the slide groove, the slider is connected with a clamping member, a connecting member is provided in the clamping member, and the connecting member is slidably connected with the clamping member;

[0024] Each of the connecting members is respectively connected to the corresponding horizontal portion of the first extension member, the horizontal portion of the second extension member, the horizontal portion of the third extension member, and the horizontal portion of the fourth extension member.

[0025] Preferably, the vertical portion of the fourth extension member, the vertical portion of the first extension member, the vertical portion of the second extension member, and the vertical portion of the third extension member are slidably connected to the support frame respectively.

[0026] Preferably, the vertical portion of the fourth extension member, the vertical portion of the first extension member, the vertical portion of the second extension member, and the vertical portion of the third extension member are respectively slidably connected to the support frame and include:

[0027] The through groove is also arranged corresponding to the vertical portion of the fourth extension piece, the vertical portion of the first extension piece, the vertical portion of the second extension piece, and the vertical portion of the third extension piece, and each of the connecting pieces is also respectively connected to the corresponding vertical portion of the fourth extension piece, the vertical portion of the first extension piece, the vertical portion of the second extension piece, and the vertical portion of the third extension piece.

[0028] Preferably, the sliding connection between the connecting member and the clamping member comprises:

[0029] The clamping member comprises a fixing portion and two clamping portions, the fixing portion is connected to the slider, the two clamping portions are respectively arranged on both sides of the fixing portion, a groove is arranged on the inner wall of the clamping portion, a gear is arranged in the groove, and the gear is rotatably connected to the inner wall of the groove;

[0030] The connecting member is arranged between the two clamping parts, and a latching tooth is arranged on the side wall of the connecting member, and the latching tooth is meshed with the gear.

[0031] Preferably, limiting bolts are respectively provided on the first threaded rod, the second threaded rod, the third threaded rod and the fourth threaded rod.

[0032] The beneficial effects of the utility model include at least one of the following: the expansion component can be adjusted in the horizontal and vertical directions as needed, so that the battery detection and maintenance special rack can adapt to batteries of different sizes and shapes, thereby ensuring that the battery can be firmly placed on the special rack to facilitate detection and maintenance operations.

[0033] Through the threaded connection between the threaded rod and the extension, the operator can easily rotate the threaded rod to adjust the position of the extension. This design not only simplifies the adjustment process, but also improves the accuracy of the adjustment, allowing the dedicated rack to quickly adapt to batteries of different specifications. The sliding connection design of the connector and the clamp in the extension component ensures the stability of the extension during the adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the top view of the structure of the first embodiment of the utility model;

[0035] Figure 2 This is a schematic diagram of the top view of the structure of the second embodiment of the utility model;

[0036] Figure 3 This is a schematic diagram of the top view of the structure of the third embodiment of the utility model;

[0037] Figure 4 It is a schematic diagram of a top view and cross-section structure of a side wall of a support frame in the fourth embodiment of the utility model;

[0038] Figure 5 This is a schematic diagram of the top view of the entire support frame in the fourth embodiment of the utility model;

[0039] Figure 6 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0040] Figure 7 It is a side structural schematic diagram of the connecting member and the clamping member in the fourth embodiment of the utility model.

[0041] Figure numerals: 1, support frame; 101, through groove; 102, slide groove; 103, slider; 104, clamping member; 105, connecting member; 2, extension component; 201, first extension member; 201, second extension member; 203, third extension member; 204, fourth extension member; 205, first threaded rod; 206, second threaded rod; 207, third threaded rod; 208, fourth threaded rod; 209, limit bolt. DETAILED DESCRIPTION

[0042] In order to make the purpose, scheme and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0043] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0044] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0046] Embodiment 1:

[0047] like Figure 1 As shown, it includes a support frame 1 and an extension component 2; the extension component 2 includes: a first extension piece 201, a second extension piece 202 and a first threaded rod 205; the first extension piece 201 and the second extension piece 202 are respectively arranged at the corners of the support frame 1; the first extension piece 201 and the second extension piece 202 are located on the same side of the support frame 1: the first extension piece 201 and the second extension piece 202 are respectively slidably connected to the side wall of the support frame 1; the first threaded rod 205 is provided with two threaded sections in opposite directions, the first extension piece 201 is threadedly connected to the threaded section in one direction, and the second extension piece 202 is threadedly connected to the threaded section in one direction of the beam. A limiting bolt is arranged on the threaded section of the first threaded rod 205.

[0048] Specifically, the support frame 1 serves as the basic structure of the entire dedicated frame and provides a stable support platform. The first extension member 201 and the second extension member 202 are respectively slidably connected to the side walls of the support frame 1. This sliding connection allows the extension member to move along a certain track on the support frame, thereby achieving adaptation to batteries of different sizes. The specific implementation of the sliding connection may include providing a slide rail or a slide groove on the side wall of the support frame, and the extension member is equipped with a corresponding slider or roller to ensure smooth and precise sliding.

[0049] The first threaded rod 205 has two threaded sections with different directions, for example, one part of the threaded rod has a clockwise thread and the other part has a counterclockwise thread. The horizontal portion of the first extension piece 201 has a threaded hole that matches the clockwise threaded section of the first threaded rod 205. By aligning the threaded hole with the corresponding threaded section on the threaded rod and rotating, the horizontal portion of the first extension piece 201 can be securely connected to the first threaded rod 205.

[0050] Similarly, the horizontal portion of the second extension piece 202 has a threaded hole that matches the counterclockwise threaded section of the first threaded rod 205. Likewise, the horizontal portion of the second extension piece 202 can also be securely connected to the first threaded rod 205 by aligning the threaded hole with the corresponding threaded section on the threaded rod and rotating.

[0051] This connection mode enables the first extension piece 201 and the second extension piece 202 to move in opposite directions along the threaded rod when the first threaded rod 205 rotates. By adjusting the rotation direction and amount of the threaded rod, the relative positions of the two extension pieces in the horizontal direction can be precisely controlled, thereby achieving adaptation and support for batteries of different sizes.

[0052] In the specific implementation process, the operator first determines the size and position of the battery to be tested or repaired, and then decides the position to which the first extension piece 201 and the second extension piece 202 need to be moved. The operator uses a tool (such as a wrench or a screwdriver) to rotate the first threaded rod 205. Since the threaded rod is provided with threaded sections in opposite directions, when the threaded rod rotates, the first extension piece 201 and the second extension piece 202 will slide in opposite directions along the side walls of the support frame 1 respectively. After adjusting the position of the extension piece, the operator can place the battery on the support frame. According to the size and shape of the battery, the operator can further fine-tune the position of the extension piece. By rotating the threaded rod, the first extension piece and the second extension piece are brought into contact with the edge of the battery. After the adjustment is completed, tighten the limit bolt again.

[0053] Embodiment 2:

[0054] On the basis of the first embodiment, in order to further increase the battery size applicable to the support frame, such as Figure 2As shown, the extension component 2 also includes a third extension piece 203, a fourth extension piece 204 and a second threaded rod 206; the third extension piece 203 and the fourth extension piece 204 are respectively arranged at the corners of the support frame 1, and the third extension piece 203 and the fourth extension piece 204 are located on the same side of the support frame 1; the second threaded rod 206 has the same structure as the first threaded rod 205, and the third extension piece 203 and the fourth extension piece 204 are respectively threadedly connected with two threaded segments in opposite directions on the second threaded rod 206.

[0055] Specifically, the third extension piece 203 and the fourth extension piece 204 are respectively arranged at the other two corners of the support frame 1, and they are also located on the same side of the support frame 1. This layout enables the dedicated frame to have four extension pieces on the same side, which can more comprehensively cover and adapt to batteries of different sizes. The structure of the second threaded rod 206 is the same as that of the first threaded rod 205, and it also has two thread segments in opposite directions. This means that the second threaded rod can also drive the two extension pieces to move in opposite directions.

[0056] The third extension piece 203 is threadedly connected to one thread segment of the second threaded rod 206, and the fourth extension piece 204 is threadedly connected to another thread segment. Therefore, when the second threaded rod rotates, the third extension piece and the fourth extension piece will also move in opposite directions. The specific working method is referred to the first embodiment.

[0057] Embodiment three:

[0058] In order to improve the support effect on the battery, such as Figure 3 As shown, the first extension piece 201, the second extension piece 202, the third extension piece 203 and the fourth extension piece 204 are all L-shaped bending pieces, and the first extension piece 201, the second extension piece 202, the third extension piece 203 and the fourth extension piece 204 all include a vertical portion and a horizontal portion; it should be noted that the horizontal portion and the vertical portion are only a relative positional relationship description, rather than indicating that they have essentially different structures, which is mainly to facilitate the description and understanding of the layout of the extension pieces on the support frame and the way the battery is supported. In fact, whether it is the "horizontal portion" or the "vertical portion", they are made of the same material and are manufactured through the same process. Their main function is to work together to provide stable support for the battery.

[0059] The horizontal portion of the first extension piece 201 and the horizontal portion of the second extension piece 202 are respectively threadedly connected to the two threaded segments in opposite directions on the first threaded rod 205, and the horizontal portion of the third extension piece 203 and the horizontal portion of the fourth extension piece 204 are respectively threadedly connected to the two threaded segments in opposite directions on the second threaded rod 206; the horizontal portion of the first extension piece 201, the horizontal portion of the second extension piece 202, the horizontal portion of the third extension piece 203, and the horizontal portion of the fourth extension piece 204 are respectively slidably connected to the support frame 1.

[0060] The extension assembly 2 further comprises a third threaded rod 207 and a fourth threaded rod 208 ; the third threaded rod 207 and the fourth threaded rod 208 have the same structure as the first threaded rod 205 ; and limiting bolts are arranged on the threaded sections of the second threaded rod 206 , the third threaded rod 207 and the fourth threaded rod 208 .

[0061] The vertical portion of the fourth extension piece 204 and the vertical portion of the first extension piece 201 are respectively threadedly connected to the two threaded segments in opposite directions on the third threaded rod 207; the vertical portion of the second extension piece 202 and the vertical portion of the third extension piece 203 are respectively threadedly connected to the two threaded segments in opposite directions on the fourth threaded rod 208.

[0062] The horizontal parts of the first extension piece 201 and the second extension piece 202 are respectively connected to the threaded sections in two opposite directions on the first threaded rod 205, which means that when the first threaded rod rotates, the two extension pieces will move in opposite directions. Similarly, the horizontal parts of the third extension piece 203 and the fourth extension piece 204 are connected to the second threaded rod 206 to achieve similar adjustment functions. This design allows the operator to easily adjust the position of the extension piece by rotating the threaded rod to adapt to batteries of different sizes. In addition to being connected to the threaded rod, the horizontal parts of the four extension pieces are also slidably connected to the support frame respectively. This design enables the extension piece to move freely in the horizontal direction, further enhancing its adaptability and support stability to the battery. Through the adjustment of the horizontal part and the vertical part, the special frame can adapt to batteries of different sizes in multiple directions and provide all-round support.

[0063] Embodiment 4:

[0064] In order to adapt to the width and length of different batteries, the horizontal part of the first extension piece 201, the horizontal part of the second extension piece 202, the horizontal part of the third extension piece 203, and the horizontal part of the fourth extension piece 204 need to have a horizontal movement direction and a vertical movement direction. On the basis of the above embodiment, the horizontal part of the first extension piece 201, the horizontal part of the second extension piece 202, the horizontal part of the third extension piece 203, and the horizontal part of the fourth extension piece 204 are respectively connected to the support frame 1 in a sliding manner, including:

[0065] like Figure 4 As shown, a through slot 101 is provided on the side wall of the support frame 1, and the through slot 101 is provided corresponding to the horizontal portion of the first extension piece 201, the horizontal portion of the second extension piece 202, the horizontal portion of the third extension piece 203, and the horizontal portion of the fourth extension piece 204;

[0066] The inner wall of the through slot 101 is provided with a slide slot 102, a slider 103 is provided in the slide slot 102, the slider 103 is connected with a clamping member 104, a connecting member 105 is provided in the clamping member 104; the connecting member 105 is slidably connected with the clamping member 104;

[0067] like Figure 5 As shown, each of the connecting members 105 is respectively connected to the corresponding horizontal portion of the first extension member 201, the horizontal portion of the second extension member 202, the horizontal portion of the third extension member 203, and the horizontal portion of the fourth extension member 204, so that the horizontal portion of the first extension member 201, the horizontal portion of the second extension member 202, the horizontal portion of the third extension member 203, and the horizontal portion of the fourth extension member 204 can be displaced in the vertical direction.

[0068] It should be noted that the moving direction of the clamping member 104 driving the connecting member 105 along the through slot 101 is a horizontal direction, and the sliding direction of the connecting member 105 and the clamping member 104 is a vertical direction.

[0069] In this embodiment, through grooves 101 are provided on the side walls of the support frame 1, and these through grooves 101 correspond to the horizontal parts of the four extensions. The through grooves provide space for the horizontal parts of the extensions to move, so that they can move freely on the support frame. A slide groove is provided on the inner wall of the through groove, and a slider is installed in the slide groove. The slider can slide freely in the slide groove, and this sliding mechanism enables the horizontal part of the extension to move in the horizontal direction. The connecting member and the clamping member are slidably connected, and the connecting member can move in the vertical direction under the guidance of the clamping member. The connecting member is directly connected to the horizontal part of the extension, so when the connecting member moves in the vertical direction, it will drive the horizontal part of the extension to move accordingly.

[0070] In a possible implementation, the vertical portion of the fourth extension piece 204, the vertical portion of the first extension piece 201, the vertical portion of the second extension piece 202, and the vertical portion of the third extension piece 203 are respectively slidably connected to the support frame 1. The vertical portion of the fourth extension piece 204, the vertical portion of the first extension piece 201, the vertical portion of the second extension piece 202, and the vertical portion of the third extension piece 203 are respectively slidably connected to the support frame 1 including:

[0071] like Figure 5As shown, the through groove 101 is also arranged corresponding to the vertical portion of the fourth extension piece 204, the vertical portion of the first extension piece 201, the vertical portion of the second extension piece 202, and the vertical portion of the third extension piece 203, and each of the connecting pieces 105 is also connected to the corresponding vertical portion of the fourth extension piece 204, the vertical portion of the first extension piece 201, the vertical portion of the second extension piece 202, and the vertical portion of the third extension piece 203.

[0072] Specifically, the through slots 101 provided on the side walls of the support frame 1 are not only provided corresponding to the horizontal parts of the extensions, but also provided corresponding to the vertical parts of the extensions, which means that the design of the through slots 101 takes into account the movement requirements of both the horizontal parts and the vertical parts, thus realizing the integration of dual functions.

[0073] In addition to being connected to the horizontal portion of the corresponding extension member, each connector 105 is also connected to the vertical portion of the fourth extension member 204, the vertical portion of the first extension member 201, the vertical portion of the second extension member 202, and the vertical portion of the third extension member 203. This connection method ensures that both the horizontal portion and the vertical portion can form a stable connection relationship with the slider 103 and the clamping member 104 through the connector 105. When the horizontal portion moves in the horizontal direction, the connector connected to the vertical portion will slide in the horizontal direction in the corresponding clamping member, and when the vertical portion moves in the vertical direction, the connector connected to the horizontal portion will slide in the vertical direction in the corresponding clamping member.

[0074] In a possible implementation manner, the sliding connection between the connecting member 105 and the clamping member 104 includes:

[0075] like Figure 6 As shown, the clamping member 104 includes a fixing portion 106 and two clamping portions 107, the fixing portion 106 is connected to the slider 103, the two clamping portions 107 are respectively arranged on both sides of the fixing portion 106, a groove is arranged on the inner wall of the clamping portion 107, a gear 108 is arranged in the groove, and the gear 108 is rotatably connected to the inner wall of the groove; the connecting member 105 is arranged between the two clamping portions 107, as shown in FIG. Figure 7 As shown, the side wall of the connecting member 105 is provided with a latching tooth 109, and the latching tooth 109 is meshed with the gear 108. The latching tooth 109 is meshed with the gear 108 in the clamping portion 107. When the gear rotates, the latching tooth moves along the tooth surface of the gear, thereby realizing the sliding of the connecting member 105 in the clamping member 104. Since the connecting member 105 is connected to the horizontal part and the vertical part of the corresponding extension member, this sliding will drive the extension member to move in the corresponding direction.

[0076] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A special rack for battery inspection and maintenance, characterized in that: It comprises a support frame (1) and an expansion component (2); the expansion component (2) comprises: A first extension piece (201), a second extension piece (202) and a first threaded rod (205); The first extension piece (201) and the second extension piece (202) are respectively arranged at the corners of the support frame (1); the first extension piece (201) and the second extension piece (202) are located on the same side of the support frame (1): The first extension piece (201) and the second extension piece (202) are respectively slidably connected to the side walls of the support frame (1); The first threaded rod (205) is provided with two threaded sections in opposite directions, the first extension piece (201) is threadedly connected to the threaded section in one direction, and the second extension piece (202) is threadedly connected to the threaded section in one direction of the beam.

2. A battery detection and maintenance rack according to claim 1, characterized in that: The extension assembly (2) further comprises a third extension piece (203), a fourth extension piece (204) and a second threaded rod (206); The third extension piece (203) and the fourth extension piece (204) are respectively arranged at the corners of the support frame (1), and the third extension piece (203) and the fourth extension piece (204) are located on the same side of the support frame (1); The second threaded rod (206) has the same structure as the first threaded rod (205), and the third extension piece (203) and the fourth extension piece (204) are respectively threadedly connected to two threaded sections in opposite directions on the second threaded rod (206).

3. A battery detection and maintenance rack according to claim 2, characterized in that: The first extension piece (201), the second extension piece (202), the third extension piece (203) and the fourth extension piece (204) are all L-shaped bending pieces, and the first extension piece (201), the second extension piece (202), the third extension piece (203) and the fourth extension piece (204) all include a vertical portion and a horizontal portion; The horizontal portion of the first extension piece (201) and the horizontal portion of the second extension piece (202) are respectively threadedly connected to two threaded segments in opposite directions on the first threaded rod (205); the horizontal portion of the third extension piece (203) and the horizontal portion of the fourth extension piece (204) are respectively threadedly connected to two threaded segments in opposite directions on the second threaded rod (206); The horizontal portion of the first extension piece (201), the horizontal portion of the second extension piece (202), the horizontal portion of the third extension piece (203), and the horizontal portion of the fourth extension piece (204) are respectively slidably connected to the support frame (1).

4. A battery detection and maintenance rack according to claim 3, characterized in that: The expansion assembly (2) further comprises a third threaded rod (207) and a fourth threaded rod (208); the third threaded rod (207) and the fourth threaded rod (208) have the same structure as the first threaded rod (205); The vertical portion of the fourth extension piece (204) and the vertical portion of the first extension piece (201) are respectively threadedly connected to two threaded sections in opposite directions on the third threaded rod (207); The vertical portion of the second extension piece (202) and the vertical portion of the third extension piece (203) are respectively threadedly connected to two threaded sections in opposite directions on the fourth threaded rod (208).

5. A battery detection and maintenance rack according to claim 4, characterized in that: The horizontal portion of the first extension piece (201), the horizontal portion of the second extension piece (202), the horizontal portion of the third extension piece (203), and the horizontal portion of the fourth extension piece (204) are respectively slidably connected to the support frame (1) and include: A through slot (101) is provided on the side wall of the support frame (1), and the through slot (101) is arranged corresponding to the horizontal portion of the first extension piece (201), the horizontal portion of the second extension piece (202), the horizontal portion of the third extension piece (203), and the horizontal portion of the fourth extension piece (204); The inner wall of the through groove (101) is provided with a slide groove (102), a slider (103) is provided in the slide groove (102), the slider (103) is connected with a clamping member (104), a connecting member (105) is provided in the clamping member (104), and the connecting member (105) is slidably connected to the clamping member (104); Each of the connecting pieces (105) is respectively connected to the corresponding horizontal portion of the first extension piece (201), the horizontal portion of the second extension piece (202), the horizontal portion of the third extension piece (203), and the horizontal portion of the fourth extension piece (204).

6. A battery detection and maintenance rack according to claim 5, characterized in that: The vertical portion of the fourth extension piece (204), the vertical portion of the first extension piece (201), the vertical portion of the second extension piece (202), and the vertical portion of the third extension piece (203) are respectively slidably connected to the support frame (1).

7. A battery inspection and maintenance rack according to claim 6, characterized in that: The vertical portion of the fourth extension member (204), the vertical portion of the first extension member (201), the vertical portion of the second extension member (202), and the vertical portion of the third extension member (203) are respectively slidably connected to the support frame (1) and include: The through groove (101) is also arranged corresponding to the vertical portion of the fourth extension piece (204), the vertical portion of the first extension piece (201), the vertical portion of the second extension piece (202), and the vertical portion of the third extension piece (203); each of the connecting pieces (105) is also respectively connected to the corresponding vertical portion of the fourth extension piece (204), the vertical portion of the first extension piece (201), the vertical portion of the second extension piece (202), and the vertical portion of the third extension piece (203).

8. A battery detection and maintenance rack according to claim 7, characterized in that: The sliding connection between the connecting member (105) and the clamping member (104) comprises: The clamping member (104) comprises a fixing portion (106) and two clamping portions (107), the fixing portion (106) being connected to the slider (103), the two clamping portions (107) being respectively arranged on both sides of the fixing portion (106), a groove being arranged on the inner wall of the clamping portion (107), a gear (108) being arranged in the groove, and the gear (108) being rotatably connected to the inner wall of the groove; The connecting member (105) is arranged between the two clamping parts (107), and a latching tooth (109) is arranged on the side wall of the connecting member (105), and the latching tooth (109) is meshed with the gear (108).

9. A battery inspection and maintenance rack according to any one of claims 4 to 8, characterized in that: Limiting bolts (209) are respectively provided on the first threaded rod (205), the second threaded rod (206), the third threaded rod (207) and the fourth threaded rod (208).

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