Cable low-temperature test device for electric automobile

Abstract

The utility model discloses a cable low-temperature test device for an electric automobile, which belongs to the technical field of cable detection devices and comprises a rack, a first rotating mechanism is detachably mounted at the top of the rack, a second rotating mechanism is detachably mounted at the bottom of the rack, and the first rotating mechanism and the second rotating mechanism are in transmission connection through a transmission chain. The first rotating mechanism comprises a mounting frame, the mounting frame is fixedly mounted at the top of the rack, first bearing seats are fixedly mounted on two sides of the mounting frame, transmission shafts are mounted on the first bearing seats, a mounting space for mounting a test bar is arranged between the two first bearing seats, and the test bar is rotatably arranged in the mounting space; the two ends of the test bar are respectively in transmission connection with the transmission shaft, a sample cable can be wound on one side of the test bar, a heavy object is arranged on an unwound part of the sample cable, the unwound part of the sample cable is perpendicular to the test bar, and a suspension space is arranged below the test bar. The device is simple in structure, and can greatly improve the accuracy and effectiveness of test results.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable detection devices, and more specifically relates to a low-temperature test device for cables used in electric vehicles. Background Art

[0002] At present, wires and cables need to undergo low-temperature tests. During the low-temperature tests, the test samples are not loaded with weights, resulting in the test samples not being tightly wound on the test rods and being relatively loose, which greatly affects the test results. Utility Model Content

[0003] The main purpose of the utility model is to provide a low-temperature test device for electric vehicle cables to improve the accuracy and effectiveness of test results.

[0004] According to the first aspect of the present utility model, a low-temperature test device for cables of electric vehicles is provided, comprising a frame, a first rotating mechanism is detachably mounted on the top of the frame, a second rotating mechanism is detachably mounted on the bottom of the frame, the first rotating mechanism and the second rotating mechanism are connected by a transmission chain, the first rotating mechanism comprises a mounting frame, the mounting frame is fixedly mounted on the top of the frame, a first bearing seat is fixedly mounted on both sides of the mounting frame, a transmission shaft is mounted on the first bearing seat, an installation space for installing a test rod is provided between the two first bearing seats, the test rod is rotatably arranged in the installation space, the two ends of the test rod are respectively connected to the transmission shaft, a sample cable can be wound on one side of the test rod, a weight is provided on the unwound part of the sample cable, the unwound part of the sample cable on which the weight is hung is perpendicular to the test rod, and a hanging space for hanging the weight on the unwound part of the sample cable is provided below the test rod.

[0005] In a specific embodiment of the present invention, the mounting frame includes two fixing plates and a plurality of fixing rods, the two fixing plates are fixedly connected by the plurality of fixing rods, both ends of the fixing rods are provided with threads, and the mounting space is formed between the two fixing plates and the plurality of fixing rods.

[0006] In a specific embodiment of the present invention, the fixing plate is a rectangular structure, a plurality of first assembly holes are opened on the outer periphery of the fixing plate, and one end of the fixing rod passes through the first assembly hole and is threadedly connected to the cap nut.

[0007] In a specific embodiment of the present invention, the fixing plate is provided with a plurality of first mounting holes, and the plurality of first mounting holes are evenly arranged on the fixing plate. The first mounting holes are fixedly connected to the top of the frame by bolts. The fixing plate is also provided with a first positioning hole adapted to the first bearing seat, and the first bearing seat is installed in the first positioning hole and fixedly connected by bolts.

[0008] In a specific embodiment of the present invention, a first sprocket is sleeved on the transmission shaft, and the second rotating mechanism includes a bearing seat plate and a second bearing seat, the second bearing seat is fixedly mounted on the bearing seat plate, and the bearing seat plate is fixedly mounted on the bottom of the frame, a connecting shaft is mounted on the second bearing seat, a second sprocket is sleeved on the connecting shaft, and the second sprocket is connected to the first sprocket through the transmission chain.

[0009] In a specific embodiment of the present invention, the bearing seat plate is provided with a plurality of slots and second positioning holes, the slots are fixedly connected to the bottom of the frame by bolts, and the second bearing seat is installed in the second positioning holes and fixedly connected by bolts.

[0010] In a specific embodiment of the present invention, the connecting shaft includes a first connecting end and a second connecting end respectively arranged at both ends, the first connecting end is a square structure, the second connecting end is a circular structure, a connecting portion and an axis body portion are arranged between the first connecting end and the second connecting end, one end of the first connecting end is connected to the connecting portion, and the two ends of the axis body portion are respectively connected to the connecting portion and the second connecting end, and the first connecting end, the connecting portion, the axis body portion and the second connecting end are connected as an integrated arrangement.

[0011] In a specific embodiment of the present invention, a key slot is provided on the connecting portion, and the connecting portion is connected to the second sprocket through a key transmission.

[0012] In a specific embodiment of the present invention, the frame includes a plurality of first vertical rods, a first cross rod, a first oblique rod, a second cross rod and a second vertical rod arranged at intervals, the first vertical rod and the second vertical rod are arranged perpendicular to the ground, the two ends of the first cross rod are respectively welded to the top of the first vertical rod and the bottom of the second vertical rod, the tops of the two first vertical rods are welded and fixed by the second cross rod, the two second vertical rods are welded and fixed by another second cross rod, the two ends of the first oblique rod are respectively welded to the top of the first vertical rod and the top of the second vertical rod, the distance from the test rod to the second cross rod is the height of the hanging space, and the distance between the two second vertical rods is the width of the hanging space.

[0013] In a specific embodiment of the present invention, a fixing plate is installed at the bottom end of each of the first vertical rod and the second vertical rod, and the fixing plate is fixedly connected to the ground.

[0014] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0015] This low-temperature test device for electric vehicle cables drives the transmission chain to operate through the second rotating mechanism, thereby driving the transmission shaft of the first rotating mechanism to rotate. The test rod detachably installed between the two first bearing seats also rotates with the transmission shaft, and the sample cable is wound on the test rod. A weight is hung on the unwound part of the sample cable, so that the unwound part of the sample cable is arranged perpendicular to the test rod. When the test rod rotates, the sample cable can be neatly wound from one side of the test rod to the other side of the test rod, thereby winding to form a tight spiral. The utility model has a simple structure and greatly improves the accuracy and effectiveness of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a structural diagram of a low-temperature test device for electric vehicle cables in one embodiment of the present invention;

[0018] Figure 2 This is a schematic structural diagram of a frame in one embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of a fixed plate in one embodiment of the present utility model;

[0020] Figure 4 This is a structural diagram of a bearing seat plate in one embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a connecting shaft in one embodiment of the utility model. DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0027] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0028] Reference Figures 1 to 5 As shown, a low-temperature test device for cables for electric vehicles is provided, including a frame 1, a first rotating mechanism 2 is detachably mounted on the top of the frame 1, a second rotating mechanism 3 is detachably mounted on the bottom of the frame 1, the first rotating mechanism 2 and the second rotating mechanism 3 are connected by a transmission chain 4, the first rotating mechanism 2 includes a mounting frame 21, the mounting frame 21 is fixedly mounted on the top of the frame 1, first bearing seats 22 are fixedly mounted on both sides of the mounting frame 21, a transmission shaft 23 is mounted on the first bearing seat 22, an installation space 5 for installing a test rod is provided between the two first bearing seats 22, the test rod is detachably mounted between the two first bearing seats 22 and is connected to the transmission shaft 23, a sample cable can be wound on one side of the test rod, a weight is provided on the unwound part of the sample cable and is arranged perpendicular to the test rod, and a hanging space 6 is provided below the test rod for hanging a weight on the unwound part of the sample cable.

[0029] In this embodiment, the top of the frame 1 is detachably mounted with a first rotating mechanism 2, and the bottom of the frame 1 is detachably mounted with a second rotating mechanism 3. When maintenance is required, they can be directly disassembled and placed on a workbench for maintenance, which is convenient for workers to operate. The first rotating mechanism 2 is mainly composed of a mounting frame 21, a first bearing seat 22 and a transmission shaft 23. First bearing seats 22 are mounted on both sides of the mounting frame 21. The two first bearing seats 22 are connected to the transmission shaft 23. The ends of the two first bearing seats 22 away from the transmission shaft 23 are connected to the test rod, and the test rod is connected to the transmission shaft 23 for transmission. A sample cable is wrapped around one side of the test rod, and a hanging space 6 is provided under the test rod. The hanging space 6 is for supplying electricity to the sample. The space left by hanging a weight on the unwound part of the cable can be used to hang a weight on the part where the sample cable is not wound on the test rod, so that the sample cable with the hanging weight is perpendicular to the test rod, which can meet the indicator of low temperature test for EV lines (i.e. cables specially used for new energy vehicles). At the same time, the second rotating mechanism 3 is started to rotate, thereby driving the transmission shaft 23 to rotate through the transmission chain 4, and the transmission shaft drives the test rod to rotate, so that the sample cable is neatly wound into a tight spiral from one side of the test rod along the length direction of the test rod to the other end of the test rod. Since there is a weight hanging on the unwound part of the sample cable, the sample cable wound on the test rod will not be loose, which greatly improves the accuracy and effectiveness of the test results.

[0030] Furthermore, a weight is hung at the unwound portion of the sample cable. When the weight is fixedly installed at the unwound portion of the sample cable, the sample cable begins to wind, and the hung weight also begins to slowly approach the position of the test rod. As the weight gets closer and closer to the test rod, the rotation and winding stops, and it is necessary to manually readjust the hanging position of the weight before restarting the winding, so that the unwound portion of the sample cable is always perpendicular to the test rod. This cycle is repeated to ensure that the sample cable can be neatly wound into a tight spiral on the test rod; or when the test cable begins to wind, but the weight installed at the unwound portion of the sample cable does not change position, and the unwound portion of the sample cable is always perpendicular to the test rod, there is no need to manually readjust the hanging position of the weight, and it is only necessary to observe the winding condition of the test cable to avoid inaccurate test results due to loose winding.

[0031] In one embodiment of the present invention, Figure 1 and Figure 3As shown, the mounting frame 21 consists of two fixing plates 211 and a plurality of fixing rods 212. The two fixing plates 211 are fixedly connected by a plurality of fixing rods 212. Threads are provided on both ends of the fixing rods 212. The fixing rods 212 are used to connect and fix the two fixing plates 211 so that there is a distance between the two fixing plates 211 to form an installation space 5. The test rod is arranged in the installation space 5 and rotates. It can be removed and replaced for maintenance at any time. Different test rods are replaced according to different situations. Furthermore, the fixing plate 211 is a rectangular structure. A plurality of first assembly holes 2111 are opened on the outer periphery of the fixing plate 211. One end of the fixing rod 212 passes through the first assembly hole 2111 and is threadedly connected to the cap nut. The two ends of the fixing rod 212 respectively pass through the first assembly holes 2111 on the two fixing plates 211, and the protruding threaded parts are threadedly fixedly connected to the cap nut.

[0032] Preferably, Figure 3 As shown, the fixing plate 211 is provided with a plurality of first mounting holes 2112, and the plurality of first mounting holes 2112 are evenly arranged on the fixing plate 211, and the first mounting holes 2112 are fixedly connected to the top of the frame 1 by bolts, and the fixing plate 211 is further provided with a first positioning hole 2113 adapted to the first bearing seat 22, and the first bearing seat 22 is installed in the first positioning hole 2113 and fixedly connected by bolts, and the top of the frame 1 is provided with a second assembly hole adapted to the first mounting hole 2112, and the first mounting hole 2112 is fixedly connected to the second assembly hole by bolts, so that the fixing plate 211 is fixed to the top of the frame 1, that is, the mounting frame 21 is fixed to the top of the frame 1, and the first bearing seat 22 is installed on the first positioning hole 2113 of the fixing plate 211, and then is locked and fixed by bolts. When the first bearing seat 22 is damaged and needs to be replaced, the bolts can be loosened to replace or repair it, which is convenient for workers to operate.

[0033] In one embodiment of the present invention, Figure 1As shown, the transmission shaft 23 is sleeved with a first sprocket 24, the second rotating mechanism 3 is composed of a bearing seat plate 31 and a second bearing seat 32, the second bearing seat 32 is fixedly mounted on the bearing seat plate 31, the bearing seat plate 31 is fixedly mounted on the bottom of the frame 1, a connecting shaft 33 is mounted on the second bearing seat 32, and a second sprocket 34 is sleeved on the connecting shaft 33, the second sprocket 34 is connected to the first sprocket 24 through a transmission chain 4, and the second rotating mechanism 3 and the first sprocket 24 are mounted on the same side of the frame 1, which is convenient for the transmission chain 4 Transmission connection, the transmission chain 4 is a multi-section chain, the transmission chain 4 is sleeved on the teeth of the first sprocket 24 and the second sprocket 34, the end of the connecting shaft 33 away from the second sprocket 34 is connected to the output end of the motor, the starting motor drives the connecting shaft 33 to rotate, the second bearing seat 32 provides a place for rotation, so that the connecting shaft 33 rotates more smoothly, the connecting shaft 33 drives the second sprocket 34 to rotate, and the transmission is transmitted through the transmission chain 4, so that the first sprocket 24 rotates, so that the transmission shaft 23 rotates with the test rod, so that the sample cable is wound on the test rod.

[0034] Furthermore, if Figure 4 As shown, the bearing seat plate 31 is provided with a plurality of slots 311 and second positioning holes 312. The slots 311 are fixedly connected to the bottom of the frame 1 by bolts. The second bearing seat 32 is installed in the second positioning holes 312 and fixedly connected by bolts. A through hole adapted to the slot 311 is opened at the bottom of the frame 1. The through hole is connected to the slot 311 by bolts to fix the position of the bearing seat plate 31 and can be disassembled for maintenance. The first bearing seat 22 and the second bearing seat 32 are components of the same structure and size, which is convenient for subsequent procurement.

[0035] like Figure 5 As shown, the connecting shaft 33 includes a first connecting end 331 and a second connecting end 332 respectively arranged at both ends, the first connecting end 331 is a square structure, and the second connecting end 332 is a circular structure, and a connecting portion 333 and a shaft body portion 334 are provided between the first connecting end 331 and the second connecting end 332, one end of the first connecting end 331 is connected to the connecting portion 333, and the two ends of the shaft body portion 334 are respectively connected to the connecting portion 333 and the second connecting end 332, the first connecting end 331, the connecting portion 333, the shaft body portion 334 and the second connecting end 332 are connected as an integrated arrangement, a keyway is provided on the connecting portion 333, the second sprocket 34 is sleeved on the connecting portion 333 and fixed by a key connection, and the second connecting end 332 is installed in the second bearing seat 32 and connected to the output end of the motor.

[0036] In one embodiment of the present invention, Figure 2As shown, the frame 1 is composed of a plurality of first vertical rods 11, first cross rods 12, first oblique rods 13, second cross rods 14 and second vertical rods 15 arranged at intervals and welded to each other. The first vertical rod 11 and the second vertical rod 15 are arranged perpendicular to the ground, and the two ends of the first cross rod 12 are respectively welded to the top of the first vertical rod 11 and the bottom of the second vertical rod 15. The tops of the two first vertical rods 11 are welded and fixed by the second cross rod 14, and the two second vertical rods 15 are welded and fixed by another second cross rod 14. The two ends of the first oblique rod 13 are respectively welded to the top of the first vertical rod 11 and the top of the second vertical rod 15. The distance from the test rod to the second cross rod 14 is the height of the hanging space 6, and the distance between the two second vertical rods 15 is the width of the hanging space 6, providing sufficient hanging space for heavy objects hung at the unwound part of the sample cable, reducing the need for workers to frequently adjust the position of the heavy objects.

[0037] Furthermore, the length of the first vertical rod 11 is smaller than the length of the second vertical rod 15, and the length of the first cross rod 12 is larger than the length of the second cross rod 14. The bottom ends of the first vertical rod 11 and the second vertical rod 15 are both equipped with fixing plates 16, which are fixedly connected to the ground, making the rack 1 more stable and not easily tipping over.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low-temperature test device for electric vehicle cables, comprising a frame (1), characterized in that: A first rotating mechanism (2) is detachably mounted on the top of the frame (1), and a second rotating mechanism (3) is detachably mounted on the bottom of the frame (1). The first rotating mechanism (2) and the second rotating mechanism (3) are connected in transmission via a transmission chain (4). The first rotating mechanism (2) comprises a mounting frame (21), the mounting frame (21) is fixedly mounted on the top of the frame (1), and first bearing seats (22) are fixedly mounted on both sides of the mounting frame (21). A transmission mechanism (22) is mounted on the first bearing seat (22). A shaft (23), an installation space (5) for installing a test rod is provided between the two first bearing seats (22), the test rod can be rotatably arranged in the installation space (5), both ends of the test rod are respectively connected to the transmission shaft (23), a sample cable can be wound on one side of the test rod, a weight is provided on the unwound part of the sample cable, the unwound part of the sample cable for hanging the weight is perpendicular to the test rod, and a hanging space (6) for hanging the weight on the unwound part of the sample cable is provided below the test rod.

2. The low-temperature test device for electric vehicle cables according to claim 1, characterized in that: The mounting frame (21) comprises two fixing plates (211) and a plurality of fixing rods (212). The two fixing plates (211) are fixedly connected via the plurality of fixing rods (212). Both ends of the fixing rods (212) are provided with threads. The mounting space (5) is formed between the two fixing plates (211) and the plurality of fixing rods (212).

3. The low-temperature test device for electric vehicle cables according to claim 2, characterized in that: The fixing plate (211) is a rectangular structure. A plurality of first assembly holes (2111) are provided on the outer periphery of the fixing plate (211). One end of the fixing rod (212) passes through the first assembly hole (2111) and is threadedly connected to a cap nut.

4. The low-temperature test device for electric vehicle cables according to claim 2, characterized in that: The fixing plate (211) is provided with a plurality of first mounting holes (2112), the plurality of first mounting holes (2112) being evenly arranged on the fixing plate (211), the first mounting holes (2112) being fixedly connected to the top of the frame (1) by means of bolts, and the fixing plate (211) is further provided with a first positioning hole (2113) adapted to the first bearing seat (22), the first bearing seat (22) being installed in the first positioning hole (2113) and fixedly connected by means of bolts.

5. The low-temperature test device for electric vehicle cables according to claim 1, characterized in that: The transmission shaft (23) is sleeved with a first sprocket (24); the second rotating mechanism (3) comprises a bearing seat plate (31) and a second bearing seat (32); the second bearing seat (32) is fixedly mounted on the bearing seat plate (31); the bearing seat plate (31) is fixedly mounted on the bottom of the frame (1); a connecting shaft (33) is mounted on the second bearing seat (32); a second sprocket (34) is sleeved on the connecting shaft (33); the second sprocket (34) is transmission-connected to the first sprocket (24) via the transmission chain (4).

6. The low-temperature test device for electric vehicle cables according to claim 5, characterized in that: The bearing seat plate (31) is provided with a plurality of slotted holes (311) and a second positioning hole (312); the slotted holes (311) are fixedly connected to the bottom of the frame (1) by bolts; the second bearing seat (32) is installed in the second positioning hole (312) and fixedly connected by bolts.

7. The low-temperature test device for electric vehicle cables according to claim 5, characterized in that: The connecting shaft (33) comprises a first connecting end (331) and a second connecting end (332) respectively arranged at two ends, wherein the first connecting end (331) is a square structure, and the second connecting end (332) is a circular structure, and a connecting portion (333) and an axle body (334) are arranged between the first connecting end (331) and the second connecting end (332), one end of the first connecting end (331) is connected to the connecting portion (333), and the two ends of the axle body (334) are respectively connected to the connecting portion (333) and the second connecting end (332), and the first connecting end (331), the connecting portion (333), the axle body (334) and the second connecting end (332) are connected to form an integrated arrangement.

8. The low-temperature test device for electric vehicle cables according to claim 7, characterized in that: A keyway is provided on the connecting portion (333), and the connecting portion (333) is connected to the second sprocket (34) via a key transmission.

9. The low-temperature test device for electric vehicle cables according to claim 1, characterized in that: The frame (1) comprises a plurality of first vertical bars (11), first cross bars (12), first oblique bars (13), second cross bars (14) and second vertical bars (15) arranged at intervals. The first vertical bars (11) and the second vertical bars (15) are arranged perpendicular to the ground. The two ends of the first cross bar (12) are respectively welded to the top of the first vertical bar (11) and the bottom of the second vertical bar (15). The tops of the two first vertical bars (11) are welded and fixed by the second cross bar (14). The two second vertical bars (15) are welded and fixed by another second cross bar (14). The two ends of the first oblique bar (13) are respectively welded to the top of the first vertical bar (11) and the top of the second vertical bar (15). The distance from the test rod to the second cross bar (14) is the height of the hanging space (6), and the distance between the two second vertical bars (15) is the width of the hanging space (6).

10. The low-temperature test device for electric vehicle cables according to claim 9, characterized in that: The bottom ends of the first vertical rod (11) and the second vertical rod (15) are both installed with fixing plates (16), and the fixing plates (16) are fixedly connected to the ground.

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