Battery bottom testing tool

Abstract

This utility model relates to the field of battery testing technology and discloses a battery bottom testing fixture. The battery bottom testing fixture includes a support frame, a guide rail, a fixing mechanism, a support base, and a driving component. The support frame includes a top frame and a support column, with the top frame connected to the upper end of the support column, defining a testing space between the top frame and the support column. The guide rail includes a main section and an extension section, with the main section located inside the testing space and the extension section located outside the testing space. The fixing mechanism is connected to the top frame and located above the main section, and is used for detachable fixing to the battery. The support base is movably connected to the guide rail and is used to support the testing equipment. The driving component is connected to the support base and is used to drive the support base to move on the guide rail. The battery bottom testing fixture provided by this utility model, by movably setting the support base on the guide rail and setting the guide rail as a main section and an extension section, can avoid damage to the testing equipment due to dangerous situations involving the battery, reducing the risk of damage to the testing equipment.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery bottom testing fixture. Background Technology

[0002] Bottom impact, bottom ball strike, and bottom needle penetration tests are key to evaluating the mechanical protection capabilities of batteries. However, batteries are prone to combustion or explosion during bottom testing, and existing bottom testing fixtures lack flexibility, making it difficult to protect the testing equipment when batteries burn or explode, resulting in a high risk of equipment damage. Utility Model Content

[0003] With the aim of at least solving one of the technical problems existing in the prior art, this utility model aims to provide a battery bottom testing fixture, which can avoid damage to the testing equipment due to dangerous situations involving the battery and reduce the risk of damage to the testing equipment.

[0004] To achieve the above objectives, this utility model provides a battery bottom testing fixture. The battery bottom testing fixture has intersecting height and a first horizontal direction. The battery bottom testing fixture includes a support frame, a guide rail, a fixing mechanism, a support base, and a driving component. The support frame includes a top frame and a support column. The top frame is connected to the upper end of the support column in the height direction, and a testing space is defined between the top frame and the support column. The guide rail includes a main body section and an extension section. The main body section is located inside the testing space, and the extension section is connected to one end of the main body section in the first horizontal direction and located on one side of the testing space in the first horizontal direction. The fixing mechanism is connected to the top frame and located above the main body section in the height direction. The fixing mechanism is used for detachable fixing to the battery. The support base is movably connected to the guide rail and is used to support the testing equipment. The driving component is connected to the support base and is used to drive the support base to move along the guide rail in the first horizontal direction.

[0005] In some embodiments, the drive member includes a first traction member having opposing first and second ends, the first end being connected to the support base, and the second end and the extension being located on the same side of the test space in the first horizontal direction.

[0006] In some embodiments, the support base includes a support plate and rollers, the testing device is placed on the top of the support plate in the height direction, the rollers are connected to the bottom of the support plate in the height direction and are movably connected to the guide rail, and the support plate moves along the guide rail in the first horizontal direction via the rollers.

[0007] In some embodiments, the battery bottom testing fixture further includes a locking mechanism, which includes a locking member and an unlocking member. The locking member is connected to the main body segment and is used to lock the support base to the guide rail to restrict the support base from moving along the guide rail in the first horizontal direction. The unlocking member is connected to the locking member and is used to release the locking member from locking the support base so that the support base can move along the guide rail in the first horizontal direction.

[0008] In some embodiments, the locking element includes a first stop bar and a second stop bar, and the unlocking element includes a second traction element. The first stop bar is placed on the main body segment and located on one side of the support seat in the first horizontal direction. The second stop bar is placed on the main body segment and located on the side of the support seat opposite to the first stop bar in the first horizontal direction. The second stop bar and the extension segment are located on the same side of the support seat in the first horizontal direction. The second traction element has opposing third and fourth ends. The third end is connected to the second stop bar, and the fourth end and the extension segment are located on the same side of the test space in the first horizontal direction.

[0009] In some embodiments, the battery bottom testing fixture also has a second horizontal direction, the height direction, and the first horizontal direction and the second horizontal direction intersect each other; the fixing mechanism includes two fixing components spaced apart along the second horizontal direction, the fixing components are connected to the top frame, the two fixing components define an installation space for accommodating the battery, and the two fixing components are detachably fixed to the battery at both ends in the second horizontal direction.

[0010] In some embodiments, the top frame includes two first support beams spaced apart along the first horizontal direction; the fixing assembly includes a crossbeam, a fixing member, a first fastener, and two connectors, the two connectors being respectively connected to opposite ends of the crossbeam in the first horizontal direction, the fixing member being connected to the crossbeam and used for detachably fixing to the battery; the connectors are bolted to the first support beams by the first fasteners, and one connector is fixed to one first support beam.

[0011] In some embodiments, the connector includes a first connecting plate and a second connecting plate. The first connecting plate is connected to the crossbeam and located above the first support beam in the height direction. The first connecting plate has a first through hole and a second through hole. The second connecting plate is located below the first support beam in the height direction and has a third through hole and a fourth through hole. The first fastener includes a first bolt, a first nut, a second bolt, and a second nut. The first bolt includes a first head and a first threaded portion. The first head is connected to one end of the first threaded portion in the height direction. The first threaded portion passes through the first through hole and the third through hole along the height direction. The first nut is threadedly connected to the first screw portion; along the height direction, the first connecting plate and the second connecting plate are located between the first head and the first nut; the second bolt includes a second head and a second screw portion, the second head is connected to one end of the second screw portion in the height direction, the second screw portion passes through the second through hole and the fourth through hole along the height direction, and the second nut is threadedly connected to the second screw portion; along the height direction, the first connecting plate and the second connecting plate are located between the second head and the second nut; along the first horizontal direction, the first support beam is located between the first bolt and the second bolt.

[0012] In some embodiments, the fixing component further includes a second fastener, which secures the fixing member to the beam bolt.

[0013] In some embodiments, the fastener includes a fixing part, a first fixing plate, and a second fixing plate. The fixing part has a strip-shaped fixing hole that extends along the height direction and is used for detachably fixing to the battery. The first fixing plate is connected to the fixing part and is located above the crossbeam in the height direction. The first fixing plate has a fifth through hole and a sixth through hole. The second fixing plate is located below the crossbeam in the height direction and has a seventh through hole and an eighth through hole. The second fastener includes a third bolt, a third nut, a fourth bolt, and a fourth nut. The third bolt includes a third head and a third threaded portion. The third head is connected to one end of the third threaded portion in the height direction. The third threaded portion extends along the height direction... The third bolt passes through the fifth and seventh through holes in the height direction, and the third nut is threadedly connected to the third screw portion; along the height direction, the first fixing plate and the second fixing plate are located between the third head and the third nut; the fourth bolt includes a fourth head and a fourth screw portion, the fourth head is connected to one end of the fourth screw portion in the height direction, the fourth screw portion passes through the sixth and eighth through holes in the height direction, and the fourth nut is threadedly connected to the fourth screw portion; along the height direction, the first fixing plate and the second fixing plate are located between the fourth head and the fourth nut; along the second horizontal direction, the crossbeam is located between the third bolt and the fourth bolt.

[0014] In some embodiments, the support frame further includes a base frame, a limiting plate, and a third fastener; the base frame includes a plurality of second support beams spaced apart along the first horizontal direction, and the guide rail is bolted to the second support beams by the third fastener.

[0015] In some embodiments, the limiting plate is connected to the guide rail and located above the second support beam in the height direction. The limiting plate has a first through hole and a second through hole. The third fastener includes a fifth bolt, a fifth nut, and a sixth nut. The fifth bolt includes a fifth threaded portion, a sixth threaded portion, and a limiting portion. The fifth threaded portion passes through the first through hole along the height direction and is located on one side of the second support beam in the first horizontal direction. The fifth nut is threadedly connected to the fifth threaded portion and is located on the side of the limiting plate opposite to the second support beam in the height direction. The sixth threaded portion passes through the second through hole along the height direction and is located on the side of the second support beam opposite to the fifth threaded portion in the first horizontal direction. The sixth nut is threadedly connected to the sixth threaded portion and is located on the side of the limiting plate opposite to the second support beam in the height direction. The limiting portion is located on the side of the second support beam opposite to the limiting plate in the height direction. The limiting portion is connected to the fifth threaded portion and the sixth threaded portion at opposite ends in the first horizontal direction.

[0016] Compared with the prior art, the battery bottom testing fixture of this utility model has the following advantages: By movably setting the support base on the guide rail and setting the guide rail into a main body section located inside the test space and an extension section located on one side of the test space in the first horizontal direction (i.e., the extension section is located outside the test space); when the battery needs to be tested from the bottom, the support base is driven to move to the extension section by the driving component and the test equipment is installed on the support base. Then the support base is moved to the main body section, and the test equipment can perform bottom testing on the battery fixed to the fixed mechanism below the fixed mechanism; during the bottom testing of the battery, if the battery burns, explodes, or other dangerous situations occur, the support base is driven to move along the guide rail by the driving component. The support base can move the test equipment from the dangerous area (inside the test space) where the main body section is located to the safe area (outside the test space) where the extension section is located, thereby avoiding damage to the test equipment due to dangerous situations with the battery and reducing the risk of damage to the test equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a battery bottom testing fixture provided in an embodiment of the present invention;

[0018] Figure 2 This is a front view of a battery bottom testing fixture provided in an embodiment of this utility model;

[0019] Figure 3 This is a top view of a battery bottom testing fixture provided in an embodiment of the present invention;

[0020] Figure 4This is a schematic diagram of the connection between the support frame and the guide rail provided in this embodiment of the utility model;

[0021] Figure 5 yes Figure 4 Enlarged view of point A;

[0022] Figure 6 This is a schematic diagram showing the connection between the support frame and the fixing mechanism provided in this embodiment of the utility model;

[0023] Figure 7 yes Figure 6 Enlarged view of point B;

[0024] Figure 8 yes Figure 6 Enlarged view of point C;

[0025] Figure 9 This is a schematic diagram of the connection between the fastener and the second fastener provided in this embodiment of the utility model;

[0026] Figure 10 This is a top view of the fastener provided in this embodiment of the utility model;

[0027] Figure 11 This is a schematic diagram of the connection between the connector and the first fastener provided in this embodiment of the utility model;

[0028] Figure 12 This is a top view of the connector provided in an embodiment of the present utility model;

[0029] Figure 13 This is a side view of the guide rail, support base, and locking component provided in an embodiment of the present utility model;

[0030] Figure 14 This is a schematic diagram of the connection of the guide rail, support base and locking component provided in the embodiment of this utility model from a first perspective;

[0031] Figure 15 This is a schematic diagram of the connection of the guide rail, support base and locking member provided in the embodiment of this utility model from a second perspective;

[0032] Figure 16 This is a schematic diagram of the structure of the second strip provided in an embodiment of this utility model.

[0033] In the diagram, 100 represents the testing fixture at the bottom of the battery.

[0034] 1. Support frame; 11. Top frame; 12. Support column; 13. Bottom frame; 14. Limiting plate; 15. Third fastener; 16. Casters; 17. Spiral support legs; 111. First support beam; 112. First connecting beam; 131. Second support beam; 132. Second connecting beam; 141. First through hole; 142. Second through hole; 151. Fifth bolt; 152. Fifth nut; 153. Sixth nut; 1511. Fifth screw part; 1512. Sixth screw part; 1513. Limiting part;

[0035] 2. Guide rail; 21. Main body section; 22. Extension section;

[0036] 3. Fixing mechanism; 31. Fixing component; 311. Crossbeam; 312. Fixing element; 313. First fastener; 314. Connecting element; 315. Second fastener; 3121. Fixing part; 3122. First fixing plate; 3123. Second fixing plate; 3131. First bolt; 3132. First nut; 3133. Second bolt; 3134. Second nut; 3141. First connecting plate; 3142. Second connecting plate; 3151. Third bolt; 3152. Third nut; 3153. Fourth bolt; 3154. Fourth nut; 31211, Strip-shaped fixing hole; 31221, Fifth through hole; 31222, Sixth through hole; 31231, Seventh through hole; 31232, Eighth through hole; 31311, First head; 31312, First screw part; 31331, Second head; 31332, Second screw part; 31411, First through hole; 31412, Second through hole; 31421, Third through hole; 31422, Fourth through hole; 31511, Third head; 31512, Third screw part; 31531, Fourth head; 31532, Fourth screw part;

[0037] 4. Support base; 41. Support plate; 42. Rollers; 43. Guardrail;

[0038] 5. Driving component; 51. First traction component; 511. First end; 512. Second end;

[0039] 6. Locking mechanism; 61. Locking element; 62. Unlocking element; 611. First stop bar; 612. Second stop bar; 621. Second traction element; 6121. Horizontal plate; 6122. Vertical plate; 6211. Third end; 6212. Fourth end;

[0040] 7. Intermediate beam;

[0041] 110. Test space; 120. Installation space;

[0042] 200. Battery;

[0043] 300. Testing equipment;

[0044] Z represents the altitude; X represents the first horizontal direction; and Y represents the second horizontal direction. Detailed Implementation

[0045] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0051] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0052] like Figures 1-16 As shown, a preferred embodiment of the present invention provides a battery bottom testing fixture 100, which has intersecting height direction Z and first horizontal direction X. The battery bottom testing fixture 100 includes a support frame 1, a guide rail 2, a fixing mechanism 3, a support base 4, and a driving component 5.

[0053] The support frame 1 includes a top frame 11 and a support column 12. The top frame 11 is connected to the upper end of the support column 12 in the height direction Z, and the top frame 11 and the support column 12 define a test space 110. The guide rail 2 includes a main body section 21 and an extension section 22. The main body section 21 is located inside the test space 110, and the extension section 22 is connected to one end of the main body section 21 in the first horizontal direction X and is located on one side of the test space 110 in the first horizontal direction X. The fixing mechanism 3 is connected to the top frame 11 and is located above the main body section 21 in the height direction Z. The fixing mechanism 3 is used for detachable fixing to the battery 200.

[0054] The support base 4 is used to support the test equipment 300 and is movably connected to the guide rail 2; the drive component 5 is connected to the support base 4 and is used to drive the support base 4 to move along the guide rail 2 in the first horizontal direction X.

[0055] Based on this technical solution, by movably mounting the support base 4 on the guide rail 2 and configuring the guide rail 2 as a main body section located inside the test space 110 and an extension section 22 located on one side of the test space 110 in the first horizontal direction X (i.e., the extension section 22 is located outside the test space 110); when it is necessary to perform bottom testing on the battery 200, the support base 4 is driven to move to the extension section 22 by the drive component 5 and the test device 300 is installed on the support base 4, and then the support base 4 is moved to the main body section 21, so that the test device 300 can be tested below the fixing mechanism 3. The battery 200, fixed to the fixing mechanism 3, undergoes bottom testing. During the bottom testing of the battery 200, if the battery 200 experiences dangerous situations such as combustion or explosion, the support base 4 is driven to move along the guide rail 2 by the driving component 5. The support base 4 can move the test equipment 300 from the dangerous area (inside the test space 110) where the main body section 21 is located to the safe area (outside the test space 110) where the extension section 22 is located. This can prevent the test equipment 300 from being damaged due to dangerous situations involving the battery 200 and reduce the risk of damage to the test equipment 300.

[0056] In this embodiment, there are multiple support columns 12.

[0057] In this embodiment, there are two guide rails 2, which are spaced apart along the second horizontal direction Y. More specifically, the two guide rails 2 are connected together by intermediate beams 7, and there are multiple intermediate beams 7, which are spaced apart along the first horizontal direction X.

[0058] Optionally, the drive unit 5 can be a manual drive unit 5 that relies on human power for direct or indirect operation, or an automatic drive unit 5 that achieves automated drive through devices such as motors, hydraulic cylinders, and pneumatic cylinders.

[0059] In this embodiment, the driving member 5 is a manual driving member 5. Specifically, the driving member 5 includes a first traction member 51. The first traction member 51 has a first end 511 and a second end 512 opposite to each other. The first end 511 is connected to the support base 4, and the second end 512 and the extension section 22 are located on the same side of the test space 110 in the first horizontal direction X.

[0060] By placing the second end 512 of the first traction member 51 and the extension section 22 on the same side of the test space 110, during the bottom test of the battery 200, if the battery 200 experiences dangerous situations such as combustion or explosion, the test personnel can pull the first traction member 51 near the second end 512 in a safe area (outside the test space 110) away from the dangerous area (inside the test space 110). This allows the first traction member 51 to quickly pull the support base 4 and the test equipment 300 placed on the support base 4 from the dangerous area (inside the test space 110) where the main body section 21 is located to the safe area (outside the test space 110) where the extension section 22 is located, ensuring that the test equipment 300 can quickly escape danger, further improving the safety of the test equipment 300 and reducing the risk of equipment damage.

[0061] In this embodiment, the first traction member 51 is an iron chain.

[0062] In some other embodiments, the first traction member 51 may be any device or tool, including but not limited to stainless steel chains, steel cables, hemp ropes, nylon ropes, wire ropes, pull rods, etc., that can be used to traction the support base 4 to move along the guide rail 2 in the first horizontal direction X.

[0063] The battery bottom testing fixture 100 also has a second horizontal direction Y, a height direction Z, and the first horizontal direction X and the second horizontal direction Y intersecting each other.

[0064] In this embodiment, the height direction Z, the first horizontal direction X, and the second horizontal direction Y are perpendicular to each other. The first horizontal direction X is the length direction of the battery bottom testing fixture 100, and the length direction of the battery bottom testing fixture 100 is parallel to the length direction of the battery 200. The second horizontal direction Y is the width direction of the battery bottom testing fixture 100, and the width direction of the battery bottom testing fixture 100 is parallel to the width direction of the battery 200.

[0065] See Figure 1 and Figure 2 The support base 4 includes a support plate 41 and a roller 42. The test equipment 300 is placed on the top of the support plate 41 in the height direction Z. The roller 42 is connected to the bottom of the support plate 41 in the height direction Z and is movably connected to the guide rail 2. The support plate 41 moves along the guide rail 2 in the first horizontal direction X via the roller 42.

[0066] The support plate 41 provides a spacious and stable platform for the test equipment 300. The rollers 42 are connected to the bottom of the support plate 41 and are movably connected to the guide rail 2. This structure gives the support base 4 excellent mobility. The rollers 42 roll on the guide rail 2 with low friction, which allows the support plate 41 to easily move the test equipment along the guide rail 2 in the first horizontal direction X, facilitating the rapid transfer of the support base 4 between the main body section 21 and the extension section 22.

[0067] The support base 4 also includes a guardrail 43, which is connected to the top of the support plate 41 and defines a space for housing the test equipment 300. The guardrail 43, connected to the top of the support plate 41 and together defining the space, securely confines the test equipment 300 within the space. During the movement of the support base 4 along the guide rail 2, whether it is movement during normal testing operations or emergency avoidance in dangerous situations, the guardrail 43 effectively prevents the test equipment 300 from shifting or slipping due to inertia, vibration, or other factors, avoiding damage caused by the equipment leaving its predetermined position. This ensures that the test equipment 300 remains stable throughout the entire testing process, providing strong assurance for the accuracy and reliability of the test.

[0068] The bottom of the support plate 41 is connected to two sets of rollers 42 spaced apart along the second horizontal direction Y. Each set of rollers 42 corresponds to a guide rail 2, and each set of rollers 42 includes multiple rollers 42 spaced apart along the first horizontal direction X.

[0069] See Figures 1-6 The top frame 11 includes two first support beams 111 spaced apart along the first horizontal direction X and two first connecting beams 112 spaced apart along the second horizontal direction Y. The first connecting beams 112 are connected to the two first support beams 111 at both ends of the first horizontal direction X, and the first support beams 111 are connected to the two first connecting beams 112 at both ends of the second horizontal direction Y.

[0070] The support frame 1 also includes a bottom frame 13, a limiting plate 14, and a third fastener 15; the bottom frame 13 includes a plurality of second support beams 131 spaced apart along the first horizontal direction X, and the guide rail 2 is bolted to the second support beams 131 by the third fastener 15; the limiting plate 14 is connected to the guide rail 2 and is located above the second support beams 131 in the height direction Z, and the limiting plate 14 has a through first through hole 141 and a second through hole 142.

[0071] The third fastener 15 includes a fifth bolt 151, a fifth nut 152, and a sixth nut 153. The fifth bolt 151 includes a fifth threaded portion 1511, a sixth threaded portion 1512, and a limiting portion 1513. The fifth threaded portion 1511 passes through the first through hole 141 along the height direction Z and is located on one side of the second support beam 131 in the first horizontal direction X. The fifth nut 152 is threaded to the fifth threaded portion 1511 and is located on the side of the limiting plate 141 facing away from the second support beam 131 in the height direction Z. The sixth threaded portion 1511... 512 is inserted through the second through hole 142 along the height direction Z and is located on the side of the second support beam 131 away from the fifth screw part 1511 in the first horizontal direction X. The sixth nut 153 is threaded to the sixth screw part 1512 and is located on the side of the limiting plate 14 away from the second support beam 131 in the height direction Z. The limiting part 1513 is located below the second support beam 131 in the height direction Z. The limiting part 1513 is connected to the fifth screw part 1511 and the sixth screw part 1512 at opposite ends in the first horizontal direction X, respectively.

[0072] By employing a combination of a limiting plate 14, a fifth bolt 151, a fifth nut 152, and a sixth nut 153, the tester can tighten the fifth nut 152 and the sixth nut 153 to clamp and fix the second support beam 131, thus firmly connecting the guide rail 2 to the second support beam 131. By loosening the fifth nut 152 and the sixth nut 153, the tester can release the limiting plate 14 and the limiting part 1513 from the crossbeam 311, allowing the guide rail 2 to move along the second horizontal direction Y on the second support beam 131. This changes the position of the guide rail 2 on the second support beam 131, thereby changing the position of the main body section 21 within the test space 110. This, in turn, allows for changes in the usage position of the support base 4 and the test equipment 300 within the test space 110, adapting to the testing requirements of different testing processes for the bottom of the battery 200, further enhancing the versatility of the battery bottom testing fixture 100.

[0073] The bottom frame 13 also includes two second connecting beams 132 spaced apart along the second horizontal direction Y, and the second support beam 131 connects the two second connecting beams 132 at both ends of the second horizontal direction Y.

[0074] For example, each guide rail 2 is connected to two sets of limiting plates 14 on both sides. Each set of limiting plates 14 includes multiple limiting plates 14 spaced apart along the first horizontal direction X. The multiple limiting plates 14 in a set of limiting plates 14 correspond one-to-one with the multiple second support beams 131.

[0075] The bottom frame 13 is connected to multiple sets of casters 16 spaced apart along the second horizontal direction Y at its bottom in the height direction Z. Each set of casters 16 includes multiple casters 16 spaced apart along the first horizontal direction X. The use of multiple sets of casters 16 allows testers to easily move the fixture. Whether adjusting the position of the battery bottom test fixture 100 within the test site or transferring the battery bottom test fixture 100 to different locations, it requires minimal manpower and time, improving the mobility efficiency of the battery bottom test fixture 100 and reducing the labor intensity of operators.

[0076] The base frame 13 is connected to multiple sets of spiral legs 17 spaced apart in the second horizontal direction Y at its bottom in the height direction Z. Each set of spiral legs 17 includes multiple spiral legs 17 spaced apart along the first horizontal direction X. The casters 16 allow for smooth movement on flat ground, while the spiral legs 17 can be height-adjusted to adapt to differences in ground flatness. In complex environments such as production workshops with uneven ground or temporary outdoor testing sites, testers can first use the casters 16 to move the fixture to a suitable position, and then adjust the spiral legs 17 to keep the fixture level, ensuring the installation accuracy of the testing equipment 300. This combination allows the battery bottom testing fixture 100 to move quickly under good ground conditions and work stably under harsh ground conditions, greatly expanding the applicable scenarios of the fixture and improving its adaptability and versatility in different working environments.

[0077] See Figures 1-3 ,and Figures 6-12 The fixing mechanism 3 includes two fixing components 31 spaced apart along the second horizontal direction Y. The fixing components 31 are connected to the top frame 11. The two fixing components 31 define an installation space 120 for accommodating the battery 200. The two fixing components 31 are respectively used to detachably fix the battery 200 to both ends of the battery 200 in the second horizontal direction Y.

[0078] The fixing mechanism 3 employs two fixing components 31 spaced apart along the second horizontal direction Y, which can form a bidirectional symmetrical fixing method for the battery 200. The two fixing components 31 are detachably fixed to both ends of the battery 200 in the second horizontal direction Y. Compared with a one-sided fixing structure, this two-sided fixing structure can apply a stable constraint force to the battery 200 from both sides, preventing the battery 200 from shifting or shaking due to vibration, impact, or changes in its internal pressure during the test. When conducting high-intensity tests such as bottom impact and ball impact on the battery 200, the stable fixing method ensures that the battery 200 is always in the precise test position, avoiding the impact of battery 200 position changes on the accuracy of test results, and providing a solid guarantee for obtaining reliable test data.

[0079] The fixing assembly 31 includes a crossbeam 311, a fixing member 312, a first fastener 313, and two connecting members 314. The two connecting members 314 are respectively connected to the opposite ends of the crossbeam 311 in the first horizontal direction X. The fixing member 312 is connected to the crossbeam 311 and is used to detachably fix it to the battery 200. The connecting member 314 is bolted to the first support beam 111 by the first fastener 313, and one connecting member 314 is fixed to one first support beam 111.

[0080] The bolt fixing method is simple to operate and highly standardized. Testers can quickly install and remove the connector 314 from the first support beam 111 using common tools such as wrenches. During the test preparation stage, the fixing component 31 can be quickly installed on the top frame 11, reducing the preparation time before the test. When it is necessary to replace the fixing component 31 to adapt to the test requirements of different batteries 200, or to maintain the tooling, it can also be easily disassembled, improving the flexibility and efficiency of the test work.

[0081] In this embodiment, the fixing component 31 includes a plurality of fixing members 312, which are spaced apart along the first horizontal direction X.

[0082] See Figure 1 , Figure 3 , Figure 6 , Figure 7 , Figure 9 and Figure 10 The fixing component 31 also includes a second fastener 315, and the fixing member 312 is bolted to the crossbeam 311 by the second fastener 315.

[0083] The fastener 312 includes a fastening part 3121, a first fastening plate 3122, and a second fastening plate 3123. The fastening part 3121 has a strip-shaped fastening hole 31211 that passes through along the height direction Z and is used for detachable fastening to the battery 200. The first fastening plate 3122 is connected to the fastening part 3121 and is located above the crossbeam 311 in the height direction Z. The first fastening plate 3122 has a fifth through hole 31221 and a sixth through hole 31222. The second fastening plate 3123 is located below the crossbeam 311 in the height direction Z. The second fastening plate 3123 has a seventh through hole 31231 and an eighth through hole 31232.

[0084] The second fastener 315 includes a third bolt 3151, a third nut 3152, a fourth bolt 3153, and a fourth nut 3154. The third bolt 3151 includes a third head 31511 and a third threaded portion 31512. The third head 31511 is connected to one end of the third threaded portion 31512 in the height direction Z (i.e., the upper or lower end of the third threaded portion 31512 in the height direction Z). The third threaded portion 31512 passes through the fifth through hole 31221 and the seventh through hole 31231 along the height direction Z. The third nut 3152 is threadedly connected to the third threaded portion 31512. Along the height direction Z, the first fixing plate 3122 and the second fixing plate 3123 are located at the third head 31511 and the third nut 3154. Between 52; the fourth bolt 3153 includes a fourth head 31531 and a fourth threaded portion 31532, the fourth head 31531 is connected to one end of the fourth threaded portion 31532 in the height direction Z (i.e., the upper or lower end of the fourth threaded portion 31532 in the height direction Z), the fourth threaded portion 31532 passes through the sixth through hole 31222 and the eighth through hole 31232 along the height direction Z, and the fourth nut 3154 is threadedly connected to the fourth threaded portion 31532; along the height direction Z, the first fixing plate 3122 and the second fixing plate 3123 are located between the fourth head 31531 and the fourth nut 3154; along the second horizontal direction Y, the crossbeam 311 is located between the third bolt 3151 and the fourth bolt 3153.

[0085] By employing a combination of a first fixing plate 3122, a second fixing plate 3123, a third bolt 3151, a third nut 3152, a fourth bolt 3153, and a fourth nut 3154, the tester can tighten the third nut 3152 and the fourth nut 3154 to clamp the first fixing plate 3122 and the second fixing plate 3123 together to fix the crossbeam 311, thereby firmly connecting the fixing component 312 to the crossbeam 311. This ensures that the battery bottom test fixture 100 remains stable during high-intensity tests such as impact and needle penetration at the bottom of the battery 200, providing a solid guarantee for obtaining accurate and reliable test data. By loosening the third nut 3152 and the fourth nut 3154, the tester can loosen the first fixing plate 3122 and the second fixing plate 3123 from the crossbeam 311. The fixing part 312 can move along the first horizontal direction X on the crossbeam 311, thereby changing the position of the fixing part 3121 on the crossbeam 311 to adapt to the installation and fixing requirements of batteries 200 of different lengths, further improving the versatility of the battery bottom test fixture 100.

[0086] By providing a strip-shaped fixing hole 31211 in the fixing part 3121, the strip-shaped fixing hole 31211 further enhances the ability of the battery bottom test fixture 100 to adapt to batteries 200 with different hole spacings. Whether the hole spacing of the battery 200 pack has a small change or a large difference, the tester can quickly and accurately complete the installation and fixing of the battery 200 and the fixing component 31 through dual adjustment (movement of the fixing part 312 on the crossbeam 311 and adjustment of the position of the battery 200 in the strip-shaped fixing hole 31211). This improves the overall adaptability of the battery bottom test fixture 100 to various battery 200 packs, reduces the tooling adjustment time and difficulty caused by changes in battery 200 pack specifications, and improves the efficiency of the testing work.

[0087] In this embodiment, the fastener 312 includes two first fixing plates 3122, and the fixing part 3121 is located between the two first fixing plates 3122 along the first horizontal direction X.

[0088] See Figure 1 , Figure 3 , Figure 6 , Figure 8 , Figure 11 and Figure 12 The connector 314 includes a first connecting plate 3141 and a second connecting plate 3142. The first connecting plate 3141 is connected to the crossbeam 311 and is located above the first support beam 111 in the height direction Z. The first connecting plate 3141 has a first through hole 31411 and a second through hole 31412. The second connecting plate 3142 is located below the first support beam 111 in the height direction Z. The second connecting plate 3142 has a third through hole 31421 and a fourth through hole 31422.

[0089] The first fastener 313 includes a first bolt 3131, a first nut 3132, a second bolt 3133, and a second nut 3134. The first bolt 3131 includes a first head 31311 and a first threaded portion 31312. The first head 31311 is connected to one end of the first threaded portion 31312 in the height direction Z (i.e., the upper or lower end of the first threaded portion 31312 in the height direction Z). The first threaded portion 31312 passes through the first through hole 31411 and the third through hole 31421 along the height direction Z. The first nut 3132 is threadedly connected to the first threaded portion 31312. Along the height direction Z, the first connecting plate 3141 and the second connecting plate 3142 are located between the first head 31311 and the first nut 3134. Between 2; the second bolt 3133 includes a second head 31331 and a second threaded portion 31332, the second head 31331 is connected to one end of the second threaded portion 31332 in the height direction Z (i.e., the upper or lower end of the second threaded portion 31332 in the height direction Z), the second threaded portion 31332 passes through the second through hole 31412 and the fourth through hole 31422 along the height direction Z, and the second nut 3134 is threadedly connected to the second threaded portion 31332; along the height direction Z, the first connecting plate 3141 and the second connecting plate 3142 are located between the second head 31331 and the second nut 3134; along the first horizontal direction X, the first support beam 111 is located between the first bolt 3131 and the second bolt 3133.

[0090] By using a combination of a first connecting plate 3141, a second connecting plate 3142, a first bolt 3131, a first nut 3132, a second bolt 3133, and a second nut 3134, the tester can tighten the first nut 3132 and the second nut 3134 to clamp and fix the first support beam 111, thereby firmly connecting the connector 314 to the first support beam 111. This ensures that the battery bottom test fixture 100 remains stable during high-intensity tests such as impact and needle penetration at the bottom of the battery 200, providing a solid guarantee for obtaining accurate and reliable test data.

[0091] By loosening the first nut 3132 and the second nut 3134, the tester can loosen the first connecting plate 3141 and the second connecting plate 3142 from the first support beam 111. The connecting piece 314 can move along the second horizontal direction Y of the first support beam 111, thereby allowing the crossbeam 311 to move along the second horizontal direction Y. This can change the distance between the two fixing components 31 to adapt to the installation and fixing requirements of batteries 200 of different widths, thus improving the versatility of the battery bottom test fixture 100.

[0092] In this embodiment, the fixing component 31 includes two first fasteners 313, which are spaced apart along a second horizontal direction Y. Along the second horizontal direction Y, the crossbeam 311 is located between the two first bolts 3131.

[0093] In some other embodiments, the fixing component 31 may also include any number of first fasteners 313, such as one first fastener 313, three first fasteners 313, four first fasteners 313, etc.

[0094] See Figures 1-2 ,and Figures 13-15 The battery bottom testing fixture 100 also includes a locking mechanism 6, which includes a locking member 61 and an unlocking member 62. The locking member 61 is connected to the guide rail 2 and is used to lock the support base 4 to the guide rail 2 to restrict the support base 4 from moving along the guide rail 2 in the first horizontal direction X. The unlocking member 62 is connected to the locking member 61 and is used to release the locking member 61 from locking the support base 4 so that the support base 4 can move along the guide rail 2 in the first horizontal direction X.

[0095] During the test preparation phase, the support base 4 is securely locked to the guide rail 2 by the locking component 61, which can prevent the test equipment 300 from shifting due to accidental contact or vibration during installation and debugging. This ensures that the test equipment 300 and the battery 200 maintain a precise relative position before testing, avoiding errors in test data due to deviations in the position of the test equipment 300, thereby helping to improve the accuracy and reliability of test results and providing more accurate data support for the performance evaluation of the battery 200.

[0096] The unlocking component 62 enables quick switching between the locked and freely movable states of the support base 4; testers can conveniently control the movement and fixation of the support base 4 according to test requirements. When the position of the test equipment 300 needs to be adjusted, the unlocking component 62 is used to release the lock, allowing the support base 4 to move flexibly along the guide rail 2; once the equipment has moved to the appropriate position, it can be quickly fixed by the locking component 61. The operation process is simple and efficient, helping to improve the flexibility and efficiency of the testing work.

[0097] The locking member 61 includes a first stop bar 611 and a second stop bar 612, and the unlocking member 62 includes a second traction member 621. The first stop bar 611 is placed on the main body section 21 and located on one side of the support base 4 in the first horizontal direction X. The second stop bar 612 is placed on the main body section 21 and located on the side of the support base 4 in the first horizontal direction X away from the first stop bar 611. The second stop bar 612 and the extension section 22 are located on the same side of the support base 4 in the first horizontal direction X. The second traction member 621 has a third end 6211 and a fourth end 6212. The third end 6211 is connected to the second stop bar 612. The fourth end 6212 and the extension section 22 are located on the same side of the test space 110 in the first horizontal direction X.

[0098] By setting the locking element 61 as a first stop bar 611 and a second stop bar 612 located on both sides of the support base 4 in the first horizontal direction X, the locking element 61 can form a bidirectional limiting structure for the support base 4 and constrain the movement of the support base 4 from both sides in the first horizontal direction X. This helps to better prevent the support base 4 from shifting to any side due to external forces during the test, such as vibration or impact during battery 200 testing. This improves the stability of the locking of the support base 4, thereby ensuring that the test equipment 300 maintains a precise position throughout the test and ensuring the reliability and consistency of the test results.

[0099] By setting the unlocking component 62 as the second traction component 621, connecting the third end 6211 to the second stop bar 612, and setting the fourth end 6212 and the extension section 22 on the same side outside the test space 110, when it is necessary to unlock the locking component 61 from the support base 4, the tester can pull the second traction component 621 near the fourth end 6212 from a distance away from the test space 110, thereby moving the second stop bar 612 along the first horizontal direction X, and quickly unlocking the second stop bar 612 from the support base 4. This operation method is not only convenient and efficient, but also allows the tester to complete the unlocking action from a safe distance, avoiding the dangers of combustion, explosion, etc. that may occur during the battery 200 test due to close-range operation, thus improving the operational safety of the tester.

[0100] By positioning the first stop bar 611 and the second stop bar 612 on both sides of the support base 4, and combining the connection between the second traction member 621 and the second stop bar 612, the movement range and path of the support base 4 can be precisely controlled. During normal testing, the support base 4 is securely locked within the predetermined area of ​​the main body section 21 of the guide rail 2. When danger occurs and the test equipment 300 needs to be evacuated, pulling the second traction member 621 releases the restriction of the second stop bar 612, and the support base 4 can move along the guide rail 2 from the main body section 21 to the extension section 22 to a safe area, avoiding unexpected movement direction or positional deviation of the support base 4 after unlocking, and ensuring that the test equipment 300 is safely transferred according to the preset path.

[0101] In this embodiment, specifically, the first stop bar 611 is placed on the main body section 21 and is in contact with the foremost roller 42 (the roller 42 furthest from the extension section 22) in a set of rollers 42, and the second stop bar 612 is placed on the main body section 21 and is in contact with the last roller 42 (the roller 42 closest to the extension section 22) in a set of rollers 42.

[0102] The second stop bar 612 includes a horizontal plate 6121 and a vertical plate 6122. The horizontal plate 6121 is located between the top of the guide rail 2 and the middle of the roller 42. The vertical plate 6122 is located on the side of the roller 42 facing away from the first stop bar 611 in the first horizontal direction X. The third end 6211 is connected to the side of the vertical plate 6122 facing away from the first stop bar 611 in the first horizontal direction X. The use of the horizontal plate 6121 and the vertical plate 6122 to form the second stop bar 612 makes the contact between the second stop bar 612 and the roller 42 tighter and more stable. In the locked state, the second stop bar 612 can withstand greater external force without displacement, ensuring the stability of the testing equipment 300 throughout the testing process. During unlocking, the second traction member 621 is connected to the vertical plate 6122, so that when the second traction member 621 is pulled to release the lock, the direction of the force is consistent with the direction of movement of the second stop bar 612. With the reasonable structure of the horizontal plate 6121 and the vertical plate 6122, the second stop bar 612 can move smoothly along the guide rail 2 without jamming or deviation, ensuring that the unlocking action is fast and reliable, and improving the safety and convenience of the test operation.

[0103] In this embodiment, the structure of the first stop bar 611 is similar to that of the second stop bar 612, and will not be described in detail here.

[0104] In this embodiment, the second traction member 621 can be an iron chain.

[0105] In some other embodiments, the second traction member 621 may be any device or tool, including but not limited to stainless steel chains, steel cables, hemp ropes, nylon ropes, wire ropes, pull rods, etc., that can be used to pull the second stop bar 612 to quickly disengage from the guide rail 2.

[0106] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery bottom testing fixture (100) having intersecting height direction (Z) and a first horizontal direction (X), characterized in that, include: The support frame (1) includes a top frame (11) and a support column (12), the top frame (11) being connected to the upper end of the support column (12) in the height direction (Z), and a test space (110) being defined between the top frame (11) and the support column (12). The guide rail (2) includes a main body section (21) and an extension section (22). The main body section (21) is located inside the test space (110), and the extension section (22) is connected to one end of the main body section (21) in the first horizontal direction (X) and located on one side of the test space (110) in the first horizontal direction (X). A fixing mechanism (3) is connected to the top frame (11) and located above the main body segment (21) in the height direction (Z). The fixing mechanism (3) is used to detachably fix the battery (200). Support base (4), which is movably connected to the guide rail (2) and is used to carry the test equipment (300); A drive unit (5) is connected to the support base (4) and is used to drive the support base (4) to move along the first horizontal direction (X) on the guide rail (2).

2. The battery bottom testing fixture (100) according to claim 1, characterized in that, The drive member (5) includes a first traction member (51) having a first end (511) and a second end (512) opposite to each other. The first end (511) is connected to the support base (4), and the second end (512) and the extension section (22) are located on the same side of the test space (110) in the first horizontal direction (X).

3. The battery bottom testing fixture (100) according to claim 1, characterized in that, The support base (4) includes a support plate (41) and a roller (42). The test device (300) is placed on the support plate (41) at the top in the height direction (Z). The roller (42) is connected to the support plate (41) at the bottom in the height direction (Z) and is movably connected to the guide rail (2). The support plate (41) moves along the first horizontal direction (X) on the guide rail (2) via the roller (42).

4. The battery bottom testing fixture (100) according to any one of claims 1-3, characterized in that, It also includes a locking mechanism (6), which includes a locking element (61) and an unlocking element (62). The locking element (61) is connected to the main body section (21) and is used to lock the support base (4) to the guide rail (2) to restrict the support base (4) from moving along the first horizontal direction (X) on the guide rail (2). The unlocking element (62) is connected to the locking element (61) and is used to release the locking element (61) from locking the support base (4) so ​​that the support base (4) can move along the first horizontal direction (X) on the guide rail (2).

5. The battery bottom testing fixture (100) according to claim 4, characterized in that, The locking member (61) includes a first stop bar (611) and a second stop bar (612), and the unlocking member (62) includes a second traction member (621). The first stop bar (611) is placed on the main body section (21) and located on one side of the support seat (4) in the first horizontal direction (X). The second stop bar (612) is placed on the main body section (21) and located on the side of the support seat (4) away from the first stop bar (611) in the first horizontal direction (X). The second stop bar (612) and the extension section (22) are located on the same side of the support seat (4) in the first horizontal direction (X). The second traction member (621) has a third end (6211) and a fourth end (6212) opposite to each other. The third end (6211) is connected to the second stop bar (612). The fourth end (6212) and the extension section (22) are located on the same side of the test space (110) in the first horizontal direction (X).

6. The battery bottom testing fixture (100) according to claim 1, characterized in that, It also has a second horizontal direction (Y), the height direction (Z), and the first horizontal direction (X) and the second horizontal direction (Y) intersect each other; The fixing mechanism (3) includes two fixing components (31) spaced apart along the second horizontal direction (Y). The fixing components (31) are connected to the top frame (11). An installation space (120) for accommodating the battery (200) is defined between the two fixing components (31), and the two fixing components (31) are detachably fixed to the battery (200) at both ends of the second horizontal direction (Y).

7. The battery bottom testing fixture (100) according to claim 6, characterized in that, The top frame (11) includes two first support beams (111) spaced apart along the first horizontal direction (X); The fixing component (31) includes a crossbeam (311), a fixing member (312), a first fastener (313), and two connecting members (314). The two connecting members (314) are respectively connected to the opposite ends of the crossbeam (311) in the first horizontal direction (X). The fixing member (312) is connected to the crossbeam (311) and is used to detachably fix it to the battery (200). The connecting member (314) is bolted to the first support beam (111) by the first fastener (313), and one connecting member (314) is fixed to one first support beam (111).

8. The battery bottom testing fixture (100) according to claim 7, characterized in that, The connector (314) includes a first connecting plate (3141) and a second connecting plate (3142). The first connecting plate (3141) is connected to the crossbeam (311) and is located above the first support beam (111) in the height direction (Z). The first connecting plate (3141) has a first through hole (31411) and a second through hole (31412). The second connecting plate (3142) is located below the first support beam (111) in the height direction (Z). The second connecting plate (3142) has a third through hole (31421) and a fourth through hole (31422). The first fastener (313) includes a first bolt (3131), a first nut (3132), a second bolt (3133), and a second nut (3134). The first bolt (3131) includes a first head (31311) and a first threaded portion (31312). The first head (31311) is connected to one end of the first threaded portion (31312) in the height direction (Z). The first threaded portion (31312) passes through the first through hole (31411) and the third through hole (31421) along the height direction (Z). The first nut (3132) is threadedly connected to the first threaded portion (31312). Along the height direction (Z), the first connecting plate (3141) and the second connecting plate (3142) are located between the first head (31311) and the first nut (3132). The second bolt (3133) includes a second head (31331) and a second threaded portion (31332), the second head (31331) being connected to one end of the second threaded portion (31332) in the height direction (Z), the second threaded portion (31332) being inserted into the second through hole (31412) and the fourth through hole (31422) along the height direction (Z), and the second nut (3134) being threadedly connected to the second threaded portion (31332); along the height direction (Z), the first connecting plate (3141) and the second connecting plate (3142) are located between the second head (31331) and the second nut (3134); along the first horizontal direction (X), the first support beam (111) is located between the first bolt (3131) and the second bolt (3133).

9. The battery bottom testing fixture (100) according to claim 7, characterized in that, The fixing component (31) further includes a second fastener (315), and the fixing member (312) is bolted to the crossbeam (311) by the second fastener (315); The fastener (312) includes a fastening part (3121), a first fastening plate (3122), and a second fastening plate (3123). The fastening part (3121) has a strip-shaped fastening hole (31211) that passes through along the height direction (Z) and is used for detachable fastening to the battery (200). The first fastening plate (3122) is connected to the fastening part (3121) and is located above the crossbeam (311) in the height direction (Z). The first fastening plate (3122) has a fifth through hole (31221) and a sixth through hole (31222). The second fastening plate (3123) is located below the crossbeam (311) in the height direction (Z). The second fastening plate (3123) has a seventh through hole (31231) and an eighth through hole (31232). The second fastener (315) includes a third bolt (3151), a third nut (3152), a fourth bolt (3153), and a fourth nut (3154). The third bolt (3151) includes a third head (31511) and a third threaded portion (31512). The third head (31511) is connected to one end of the third threaded portion (31512) in the height direction (Z). The third threaded portion (31512) passes through the fifth through hole (31221) and the seventh through hole (31231) along the height direction (Z). The third nut (3152) is threadedly connected to the third threaded portion (31512). Along the height direction (Z), the first fixing plate (3122) and the second fixing plate (3123) are located at the third head (31511) and the third nut (3152). The fourth bolt (3153) includes a fourth head (31531) and a fourth threaded portion (31532), the fourth head (31531) being connected to one end of the fourth threaded portion (31532) in the height direction (Z), the fourth threaded portion (31532) being inserted into the sixth through hole (31222) and the eighth through hole (31232) along the height direction (Z), and the fourth nut (3154) being threadedly connected to the fourth threaded portion (31532); along the height direction (Z), the first fixing plate (3122) and the second fixing plate (3123) are located between the fourth head (31531) and the fourth nut (3154); along the second horizontal direction (Y), the crossbeam (311) is located between the third bolt (3151) and the fourth bolt (3153).

10. The battery bottom testing fixture (100) according to claim 1, characterized in that, The support frame (1) also includes a bottom frame (13), a limiting plate (14), and a third fastener (15). The bottom frame (13) includes a plurality of second support beams (131) spaced apart along the first horizontal direction (X), and the guide rail (2) is bolted to the second support beams (131) by the third fastener (15); The limiting plate (14) is connected to the guide rail (2) and is located above the second support beam (131) in the height direction (Z). The limiting plate (14) has a first through hole (141) and a second through hole (142). The third fastener (15) includes a fifth bolt (151), a fifth nut (152), and a sixth nut (153). The fifth bolt (151) includes a fifth threaded portion (1511), a sixth threaded portion (1512), and a limiting portion (1513). The fifth threaded portion (1511) passes through the first through hole (141) along the height direction (Z) and is located on one side of the second support beam (131) in the first horizontal direction (X). The fifth nut (152) is threaded to the fifth threaded portion (1511) and is located on the side of the limiting plate (141) away from the second support beam (131) in the height direction (Z). The sixth threaded portion (1512) passes through the first through hole (141) along the height direction (Z) and is located on the side of the limiting plate (141) away from the second support beam (131) in the height direction (Z). The second through hole (142) is inserted in the Z direction and is located on the side of the second support beam (131) away from the fifth screw part (1511) in the first horizontal direction (X). The sixth nut (153) is threaded to the sixth screw part (1512) and is located on the side of the limiting plate (14) away from the second support beam (131) in the height direction (Z). The limiting part (1513) is located on the side of the second support beam (131) away from the limiting plate (14) in the height direction (Z). The limiting part (1513) is connected to the fifth screw part (1511) and the sixth screw part (1512) at opposite ends in the first horizontal direction (X).

Images