A dolly automatic changing type equipment and lithium battery pack carrying device

Abstract

The present application provides a kind of trolley automatic change equipment, comprising: positioning mechanism, positioning mechanism includes clamping component, jacking assembly and positioning component, wherein, clamping component includes first drive mechanism and extrusion piece, extrusion piece can reciprocate horizontally, jacking assembly supports trolley, including jacking rod and second drive mechanism, jacking rod can reciprocate and lift, positioning component includes positioning lug and third drive mechanism, positioning lug can reciprocate and lift;Width adjusting mechanism, width adjusting mechanism includes plum blossom sleeve, fourth drive mechanism and rotary drive mechanism, wherein, width adjusting mechanism can reciprocate horizontally, plum blossom sleeve is rotated by rotary motor, and can be telescopic;Length adjusting mechanism, including mechanical gripper, fifth drive mechanism, sixth drive mechanism, positioning pin and the longitudinal rail that is provided with multiple positioning pin holes, wherein, mechanical gripper is used to hold positioning pin, and mechanical gripper can also move in working space.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of assisting carrying, in particular to a carrying vehicle automatic type changing equipment and a lithium battery pack carrying device. BACKGROUND

[0002] The lithium battery pack, also called lithium battery pack, has been widely used in energy storage and photovoltaic industry. At present, in the production process of lithium battery pack, carrying vehicles are used to transport them to the assembly production line. In order to improve the stability during transportation, the size and shape of the carrying vehicle should match that of the lithium battery pack. However, due to the different working scenes of the lithium battery pack, its shape and size are also different. Therefore, the carrying vehicle should have the function of type changing so as to be compatible with carrying various lithium battery packs.

[0003] At present, the type changing of the carrying vehicle is adjusted manually. The operator needs to adjust the supporting block and the positioning pin and other elements according to the size and shape of different lithium battery packs and the position of the positioning. This process greatly consumes the labor cost and has large adjustment error and low efficiency. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the problem that the carrying vehicle cannot automatically change type, and has low efficiency and poor accuracy in the prior art, and to provide a carrying vehicle automatic type changing equipment and a lithium battery pack carrying device.

[0005] To solve the above technical problems, the present application provides a trolley automatic changing equipment, which is suitable for a trolley with separated upper and lower racks, and changes the working space of the trolley by adjusting the size of the upper rack, comprising: a plurality of positioning mechanisms, the trolley is located between the plurality of positioning mechanisms, any positioning mechanism comprises a clamping assembly, a jacking assembly and a positioning assembly, wherein the clamping assembly comprises a first driving mechanism and a pressing piece connected with each other, the pressing piece reciprocates horizontally towards the trolley, the jacking assembly supports the trolley and comprises a jacking rod and a second driving mechanism connected with each other, the jacking rod reciprocates vertically by the second driving mechanism, and the positioning assembly comprises a positioning block and a third driving mechanism connected with each other, the positioning block reciprocates vertically by the third driving mechanism; at least one width adjusting mechanism is symmetrically arranged on both sides of the trolley along a first direction, any width adjusting mechanism comprises a plum blossom sleeve, a fourth driving mechanism and a rotary driving mechanism, wherein the width adjusting mechanism reciprocates horizontally along the first direction by the fourth driving mechanism, the plum blossom sleeve is connected with the rotary driving mechanism, the plum blossom sleeve rotates around a rotation center line and extends / retracts along the first direction by the rotary motor; at least one length adjusting mechanism comprises a mechanical clamp, a fifth driving mechanism, a sixth driving mechanism, a positioning pin and a longitudinal rail with a plurality of positioning pin holes arranged at intervals, wherein a plurality of longitudinal rails are matched with the upper rack of the trolley, the positioning pin can be arranged in the plurality of positioning pin holes, the connection position of the positioning pin with the longitudinal rail is matched with the length of the lithium battery pack by changing the connection position, the mechanical clamp is driven to open / close by the fifth driving mechanism to clamp the positioning pin, and the mechanical clamp is also connected with the sixth driving mechanism to drive the positioning pin to move horizontally / vertically in the working space, and the working space of the upper rack is located between the plurality of positioning pins.

[0006] In an embodiment of the present application, the upper surface of the longitudinal rail is further provided with a plurality of positioning blocks and a plurality of supporting blocks arranged at intervals along the length direction, the positioning pin is respectively arranged in connection with the plurality of positioning blocks and the supporting blocks, and the positioning block and the supporting block move along a second direction.

[0007] In an embodiment of the present application, the positioning mechanism further comprises a first connecting frame, the first connecting frame is provided with a first sliding rail and a second sliding rail extending along a third direction, the jacking assembly is provided with a first sliding groove matched with the first sliding rail, and the positioning assembly is provided with a second sliding groove matched with the second sliding rail.

[0008] In an embodiment of the present application, the upper surface of the jacking rod is provided with a plurality of bearings at intervals.

[0009] In one embodiment of the present application, the width adjusting mechanism further comprises a second connecting frame, and the star-shaped sleeve, the rotary driving mechanism and the fourth driving mechanism are arranged on the second connecting frame.

[0010] In one embodiment of the present application, a universal coupling is arranged between the star-shaped sleeve and the rotary driving mechanism.

[0011] In one embodiment of the present application, the length adjusting mechanism further comprises a third connecting frame, and a controller, a sensor and a positioner are arranged on the third connecting frame.

[0012] In one embodiment of the present application, an inductive guide rod is arranged on the mechanical gripper.

[0013] To solve the above technical problems, the present application further provides a lithium battery pack carrying device, characterized in that: comprising: the above-mentioned carrying vehicle automatic type changing equipment; a carrying vehicle, the carrying vehicle comprising an upper frame and a lower frame which are detachably connected, wherein the upper frame is connected with two longitudinal rails extending along a second direction, and comprises a plurality of transverse rails extending along a first direction, and the longitudinal rails move along the transverse rails.

[0014] In one embodiment of the present application, it comprises an adjusting screw rod arranged parallel to the transverse rails, the adjusting screw rod is connected with the longitudinal rails, and links the longitudinal rails to reciprocate along the first direction.

[0015] The above technical solution of the present application has the following advantages compared with the prior art:

[0016] The carrying vehicle automatic type changing equipment and the carrying vehicle automatic type changing equipment in the lithium battery pack carrying device can position the carrying vehicle through a plurality of positioning mechanisms and then lift it upward, so that the upper frame and the lower frame of the carrying vehicle which can adjust the size are separated and enter the working space, facilitating subsequent processing. The equipment also adjusts the length and width of the carrying vehicle through the width adjusting mechanism and the length adjusting mechanism, so that the carrying vehicle matches different specifications of lithium battery modules, and then carries different specifications of lithium battery packs, thereby stably carrying the lithium battery pack without manual intervention, saving time and being efficient, greatly reducing labor cost while improving efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings.

[0018] Figure 1 is a perspective view of the carrying vehicle automatic type changing equipment and the lithium battery pack carrying device in the preferred embodiment of the present application;

[0019] Figure 2 is Figure 1 a perspective view of a carrier in the middle;

[0020] Figure 3 is Figure 1 a perspective view of a positioning mechanism in the middle;

[0021] Figure 4 is Figure 1 a perspective view of a positioning mechanism from another angle in the middle;

[0022] Figure 5 is Figure 1 a perspective view of a width adjustment mechanism in the middle;

[0023] Figure 6 is Figure 1 a perspective view of a mechanical gripper in the middle;

[0024] Figure 7 is Figure 2 an enlarged view of A in the middle.

[0025] Description of the drawings: 100, positioning mechanism; 110, clamping assembly; 111, extrusion piece; 112, first driving mechanism; 120, jacking assembly; 121, jacking rod; 1211, bearing; 1212, first sliding groove; 122, second driving mechanism; 130, positioning assembly; 131, positioning block; 132, third driving mechanism; 133, second sliding groove; 140, first connecting frame; 141, transverse support; 142, longitudinal support; 1421, first sliding rail; 1422, second sliding rail; 200, width adjustment mechanism; 210, hexagonal sleeve; 220, fourth driving mechanism; 230, rotary driving mechanism; 240, second connecting frame; 250, shaft coupling; 300, length adjustment mechanism; 310, mechanical gripper; 311, inductive guide rod; 320, fifth driving mechanism; 330, sixth driving mechanism; 340, longitudinal rail; 341, positioning pin hole; 342, transverse sliding groove; 350, positioning pin; 360, positioning block; 370, support block; 380, third support; 400, carrier; 410, upper frame; 411, transverse rail; 420, lower frame; 421, wheel; 430, adjustment screw; 500, fence; 1001, rotation center line; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0026] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it.

[0027] Example one

[0028] Referring to Figures 3 to 7 As shown in the drawings, a trolley automatic conversion equipment is suitable for a trolley 400 with separated upper and lower racks, and changes the working space of the trolley 400 by adjusting the size of the upper rack 410 of the trolley 400, comprising: a plurality of positioning mechanisms 100, the trolley 400 is located between the plurality of positioning mechanisms 100, any positioning mechanism 100 comprises a clamping assembly 110, a jacking assembly 120 and a positioning assembly 130, wherein the clamping assembly 110 comprises a first driving mechanism 112 and a pressing piece 111 connected with each other, the pressing piece 111 reciprocates horizontally towards the direction of the trolley 400, the jacking assembly 120 supports the trolley 400 and comprises a jacking rod 121 and a second driving mechanism 122 connected with each other, the jacking rod 121 reciprocates vertically through the second driving mechanism 122, the positioning assembly 130 comprises a positioning block 131 and a third driving mechanism 132 connected with each other, the positioning block 131 reciprocates vertically through the third driving mechanism 132; at least one width adjusting mechanism 200, the width adjusting mechanism 200 is symmetrically arranged on both sides of the trolley 400 along the first direction X, any width adjusting mechanism 200 comprises a star-shaped sleeve 210, a fourth driving mechanism 220 and a rotary driving mechanism 230, wherein the width adjusting mechanism 200 reciprocates horizontally along the first direction X through the fourth driving mechanism 220, the star-shaped sleeve 210 is connected with the rotary driving mechanism 230, the star-shaped sleeve 210 rotates around the rotation center line 1001 and reciprocates along the first direction X, further, the rotation center line 1001 extends along the first direction X at the center of the star-shaped sleeve 210; at least one length adjusting mechanism 300, comprising a mechanical clamp jaw 310, a fifth driving mechanism 320, a sixth driving mechanism 330, a positioning pin 350 and a longitudinal rail 340 with a plurality of positioning pin holes 341 arranged at intervals, wherein the plurality of longitudinal rails 340 are matched with the upper rack 410 of the trolley 400, the positioning pin 350 can be arranged in the plurality of positioning pin holes 341, by changing the connection position with the longitudinal rail 340 to match the length of the lithium battery pack, the mechanical clamp jaw 310 drives the opening and closing of the mechanical clamp jaw 310 through the fifth driving mechanism 320 to clamp the positioning pin 350, the mechanical clamp jaw 310 also drives the horizontal / lifting movement of the positioning pin 350 in the working space through the sixth driving mechanism 330, the working space of the upper rack 410 is located between the plurality of positioning pins 350, in this embodiment, an XYZ three-dimensional coordinate system is established with the trolley automatic conversion equipment as the reference, wherein the first direction X, the second direction Y and the third direction Z are perpendicular to each other, the first direction X and the second direction Y respectively extend along the horizontal direction.

[0029] The automatic changing equipment of the carrier can position the carrier 400 through the plurality of positioning mechanisms 100, then lift it upward, so that the upper rack 410 and the lower rack 420 which can adjust the size are separated and enter the working space, so as to facilitate subsequent processing. The equipment also adjusts the length and width of the carrier 400 through the width adjusting mechanism 200 and the length adjusting mechanism 300, so that the carrier 400 matches different specifications of lithium battery modules. This process does not require manual intervention, greatly reduces labor costs, and improves the efficiency and quality of the carrier module.

[0030] Referring to Figure 3 and Figure 4 In the embodiment, two positioning mechanisms 100 are provided, which are symmetrically arranged at the two ends of the carrier 400 along the first direction X and extend along the first direction X. Further, the two positioning mechanisms 100 are centrally symmetrically arranged. In the embodiment, the first driving mechanism 112 and the second driving mechanism 122 are preferably driving motors, and the third driving mechanism 132 is preferably a telescopic cylinder, which are independently arranged. The pressing piece 111 is preferably an elastic element, and the working surface of the pressing piece 111 always protrudes from the lifting assembly 120 and the positioning assembly 130 along the second direction Y during the extension and retraction of the pressing piece 111 along the second direction Y. In the embodiment, the lifting rod 121 is preferably a steel plate extending along the first direction X, which is lifted by the second driving mechanism 122. In the embodiment, the positioning block 131 is arranged as a block that gradually contracts inward from bottom to top. When the clamping assembly 110 and the lifting assembly 120 work, the positioning block 131 starts to rise through the third driving mechanism 132 and passes through the positioning hole of the upper rack 410, so as to fix the position of the upper rack 410.

[0031] Referring to Figure 3 and Figure 4As shown, the positioning mechanism 100 further comprises a first connecting frame 140, the first connecting frame 140 is provided with a first sliding rail 1421 and a second sliding rail 1422 extending along the third direction Z, the jacking assembly 120 is provided with a first sliding groove 1212 matched with the first sliding rail 1421, and the positioning assembly 130 is provided with a second sliding groove 133 matched with the second sliding rail 1422. In the embodiment, the clamping assembly 110 is arranged at the side end of the first connecting frame 140, the jacking rod 121 is arranged on the upper surface of the first connecting frame 140, the second driving mechanism 122 is connected to the first connecting frame 140 below the jacking rod 121, and the positioning assembly 130 is arranged between the clamping assembly 110 and the jacking assembly 120 along the first direction X. Specifically, the first sliding groove 1212 extending along the third direction Z is arranged at the contact position of the jacking assembly 120 and the first connecting frame 140, the first sliding rail 1421 extending along the third direction Z is arranged at the corresponding position of the first connecting frame 140, and the first sliding groove 1212 is correspondingly and detachably connected to the first sliding rail 1421, so as to realize the lifting movement of the jacking assembly 120. Similarly, the second sliding groove 133 is arranged at the contact position of the positioning assembly 130 and the first connecting frame 140, the second sliding rail 1422 extending along the third direction Z is arranged at the corresponding position of the first connecting frame 140, and the second sliding groove 133 is correspondingly and detachably connected to the second sliding rail 1422, so as to realize the lifting movement of the positioning assembly 130.

[0032] Referring to Figure 3 and Figure 4 As shown, the upper surface of the jacking rod 121 is provided with a plurality of bearings 1211. The embodiment comprises 12 bearings 1211, and specifically, six bearings 1211 are fixedly connected to one jacking rod 121. After the upper rack 410 is jacked up, the position of the upper rack 410 can be finely adjusted on the jacking rod 121, so as to be connected with the positioning assembly 130. The bearings 1211 can reduce the frictional resistance between the upper rack 410 and the jacking rod 121 in the process, so as to facilitate the smooth progress of the fine adjustment process.

[0033] Referring to Figure 5 As shown, the embodiment is provided with two width adjustment mechanisms 200 arranged on the two sides of the trolley 400 along the first direction X, wherein the fourth driving mechanism 220 is preferably a telescopic cylinder, the rotary driving mechanism 230 is preferably a rotary motor, and the plum blossom sleeve 210 extends towards the trolley 400 along the first direction X. In the embodiment, the plum blossom sleeve 210 is preferably a plum blossom sleeve.

[0034] Referring to Figure 5As shown, the width adjusting mechanism 200 further comprises a second connecting frame 240, the plum blossom sleeve 210, the rotating driving mechanism 230 and the fourth driving mechanism 220 are arranged on the second connecting frame 240, and a shaft coupling 250 is arranged between the plum blossom sleeve 210 and the rotating driving mechanism 230. In the embodiment, the second connecting frame 240 is arranged on the periphery of the carrier 400, the plum blossom sleeve 210 and the rotating driving mechanism 230 are arranged on the upper surface of the second connecting frame 240, and the fourth driving mechanism 220 is connected below the rotating driving mechanism 230. In other embodiments, the number of the width adjusting mechanism 200 can be set according to actual use, and the application does not make specific limitations.

[0035] As shown in Figure 6 and Figure 7 As shown, the length adjusting mechanism 300 further comprises a mechanical arm, the mechanical clamping jaw 310 is arranged on the working end of the mechanical arm, the fifth driving mechanism 320 is connected between the mechanical clamping jaw 310, and the sixth driving mechanism 330 is connected to the mechanical arm. The sixth driving mechanism 330 can drive the overall mechanical arm, the mechanical clamping jaw 310 and the fifth driving mechanism 320 to move above the longitudinal rail 340. In the embodiment, the fifth driving mechanism 320 and the sixth driving mechanism 330 are preferably driving motors.

[0036] As shown in Figure 7 As shown, the upper surface of the longitudinal rail 340 is further provided with a plurality of positioning blocks 360 and a plurality of supporting blocks 370 which are arranged at intervals along the length direction thereof, and the positioning pin 350 is respectively arranged through the plurality of positioning blocks 360 and the plurality of supporting blocks 370. The positioning block 360 and the supporting block 370 are moved along the second direction Y. In the embodiment, the longitudinal rail 340 is arranged as a steel rail extending along the second direction Y, and the upper surface thereof is uniformly and intervaliy provided with 25 positioning pin holes 341 arranged along the length direction thereof, and all the positioning pin holes 341 are through holes. In other embodiments, the user can adjust the length distance according to actual needs, and the number of positioning pin holes 341 is increased or reduced accordingly to increase or reduce the adjustment accuracy, and the application does not make specific limitations.

[0037] As shown in Figure 7 As shown, the pin body of the positioning pin 350 can be inserted between the positioning pin holes 341, and a nut is arranged on the top of the positioning pin 350. Further, the size of the nut is larger than the size of the positioning pin hole 341 to limit the insertion distance of the positioning pin 350. In the embodiment, the position of the positioning pin 350 on the longitudinal rail 340 is adjusted by the length adjusting mechanism 300 to adjust the total length of the working space of the carrier 400 inside.

[0038] As shown in Figure 7As shown, the length adjusting mechanism 300 further comprises a third connecting frame, and a controller, a sensor and a positioner arranged on the third connecting frame, and the mechanical gripper 310 is provided with a sensing guide rod 311. In the embodiment, the controller, the sensor and the positioner are all connected to the mechanical arm, wherein the controller is signal-connected to an external control system, so that the operator can start or stop the device at any time according to the actual situation, the sensor is connected to the mechanical gripper 310 inside the mechanical arm, used to adjust the pressing force of the mechanical gripper 310 in cooperation with the sensing guide rod 311, so as to avoid damage to the positioning pin 350 due to the mechanical gripper 310 clamping too tightly, and the positioner is signal-connected to the controller, and will automatically stop when the mechanical gripper 310 moves to the preset position, so as to accurately reach the expected target position.

[0039] Embodiment two

[0040] As shown in Figure 1 and Figure 2 A lithium battery pack carrying device, characterized in that: comprising: the carrying vehicle automatic changing equipment in embodiment one; a carrying vehicle 400, the carrying vehicle 400 comprising an upper frame 410 and a lower frame 420 which are detachably connected, wherein the upper frame 410 is connected to two longitudinal rails 340 extending along a second direction Y, and comprises a plurality of transverse rails 411 extending along a first direction X, and the longitudinal rails 340 move along the transverse rails 411.

[0041] The lithium battery pack carrying device adjusts the working space of the carrying vehicle 400 through the carrying vehicle automatic changing equipment, so that it is fitted with the internal lithium battery pack, and then carries different specifications of lithium battery packs through the carrying vehicle 400, so as to stably carry the lithium battery pack without manual intervention, which is time-saving and efficient, and has high accuracy.

[0042] As shown in Figure 1 and Figure 2 In the embodiment, the longitudinal rails 340 are connected to the upper frame 410 and can move along the first direction X above the transverse rails 411, which together with the transverse rails 411 enclose the working space of the carrying vehicle 400. Specifically, in the embodiment, the lower surface of the longitudinal rail 340 is provided with a transverse sliding groove 342 arranged vertically along the horizontal direction of extension, which can be buckled and connected to the transverse rail 411 to realize the relative approach or away of the two longitudinal rails 340, so as to adjust the width of the carrying vehicle 400. In other embodiments, other relative sliding connection structures can also be used, and the present application does not make specific limitations.

[0043] As shown in Figure 1 and Figure 2As shown, the lithium battery pack carrying device comprises an adjusting screw 430 arranged parallel to the transverse rail 411, the adjusting screw 430 is connected with the longitudinal rail 340 and drives the longitudinal rail 340 to reciprocate along the first direction X. In the embodiment, the adjusting screw 430 is preferably a screw rod which can move along the first direction X, in use, it is fixedly connected with the longitudinal rail 340 and can drive the longitudinal rail 340 to synchronously move along the first direction X, further, it is connected with the plum blossom sleeve 210 at one end of the width adjusting mechanism 200 and synchronously rotates with the plum blossom sleeve 210 around the rotation center line 1001, so as to adjust the width of the carrying vehicle 400.

[0044] In the embodiment, the lithium battery module is arranged on the longitudinal rail 340, the carrying length of the carrying vehicle 400 is limited by the plurality of positioning pins 350 on the longitudinal rail 340, and the distance between the two positioning pins 350 at the two ends of the longitudinal rail 340 is the length limit of the carrying vehicle 400.

[0045] In the embodiment, a fence 500 can also be arranged around the lithium battery pack carrying device, so that the working environment is more stable.

[0046] The working process and principle of the lithium battery pack carrying device in the embodiment will be described below:

[0047] Before use, the user needs to set the parameters of the lithium battery pack carrying device according to the size of the lithium battery pack to be carried, and then start the device. First, the device will position the carrying vehicle 400 through the positioning mechanism 100, specifically: first, the lower frame 420 is fixed in position through the clamping assembly 110, the position of the carrying vehicle 400 is moved to below the working space, then the upper frame 410 is separated from the lower frame 420 through the jacking assembly 120, and the upper frame 410 is jacked up into the working space, finally the positioning mechanism 100 is raised to fix the position of the upper frame 410, thus completing the positioning of the carrying vehicle 400.

[0048] Next, the width adjusting mechanism 200 starts to work, first, the width adjusting mechanism 200 as a whole moves to the carrying vehicle 400 under the drive of the fourth driving mechanism 220, so that the plum blossom sleeve 210 is correspondingly sleeved on the end of the adjusting screw 430, then the two synchronously move to the predetermined target width position under the drive of the rotating mechanism, thus completing the adjustment of the width of the carrying vehicle 400.

[0049] Finally, the length adjustment mechanism 300 starts to work, before that, the positioning block 360 and the support block 370 are fixed on the longitudinal rail 340 through the positioning pin 350, then the mechanical gripper 310 will be moved to the working space above the corresponding positioning pin 350 under the drive of the mechanical arm, then move towards the corresponding positioning block 360 or support block 370, when the inductor senses that the mechanical gripper 310 reaches the height that can contact the positioning pin 350, the fifth driving mechanism 320 makes the gripper clamp the positioning pin 350, then the sixth driving mechanism 330 drives the mechanical gripper 310 and the positioning pin 350 and the support block 370 / positioning block 360 it clamps to move synchronously, when reaching the set length, reverse the above operation, the positioning block 360 / support block 370 is connected to the corresponding longitudinal rail 340 through the positioning pin 350 again, thus completing the length adjustment of the working space of the carrier 400.

[0050] In summary, the automatic conversion equipment of the lithium battery pack carrier in the lithium battery pack carrier device can position the carrier 400 through multiple positioning mechanisms 100 and then lift it upwards, so that the upper rack 410 and the lower rack 420 of adjustable size are separated and enter the working space, so as to facilitate subsequent processing. The equipment also adjusts the length and width of the carrier 400 through the width adjustment mechanism 200 and the length adjustment mechanism 300, so that the carrier 400 matches different specifications of lithium battery modules, and then carries different specifications of lithium battery packs through the carrier 400, so that the carrier work of the lithium battery pack can be stably carried out without manual intervention, which is time-saving and efficient, greatly reduces the labor cost, and improves the efficiency and quality.

[0051] Obviously, the above embodiments are only examples for clear illustration, and are not limited to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An automatic changeover device for a transport vehicle, suitable for transport vehicles with separate upper and lower frames, wherein the working space is changed by adjusting the size of the upper frame of the transport vehicle, characterized in that: include: Multiple positioning mechanisms are provided, with a transport vehicle positioned between them. Each positioning mechanism includes a clamping assembly, a lifting assembly, a positioning assembly, and a first connecting frame. The clamping assembly includes a first driving mechanism and a pressing member connected to each other. The pressing member reciprocates horizontally towards the transport vehicle. The lifting assembly supports the transport vehicle and includes a lifting rod and a second driving mechanism connected to each other. The lifting rod reciprocates vertically via the second driving mechanism. The positioning assembly includes a positioning protrusion and a third driving mechanism connected to each other. The positioning protrusion reciprocates vertically via the third driving mechanism. The first connecting frame is provided with a first slide rail and a second slide rail extending along a third direction. The lifting assembly is provided with a first slide groove that mates with the first slide rail. The positioning assembly is provided with a second slide groove that mates with the second slide rail. At least one width adjustment mechanism is provided, which is symmetrically arranged on both sides of the transport vehicle along a first direction. Each width adjustment mechanism includes a swivel sleeve, a fourth drive mechanism, and a rotary drive mechanism. The width adjustment mechanism moves horizontally back and forth along the first direction through the fourth drive mechanism. The swivel sleeve is connected to the rotary drive mechanism. The swivel sleeve rotates around the rotation center line through the rotary drive mechanism and extends and retracts along the first direction. At least one length adjustment mechanism includes a mechanical gripper, a fifth drive mechanism, a sixth drive mechanism, positioning pins, and longitudinal rails with multiple positioning pin holes spaced apart. The longitudinal rails cooperate with the upper frame of a transport vehicle. The upper surface of each rail has multiple positioning blocks and multiple support blocks spaced apart along its length. Positioning pins pass through and connect the positioning blocks and support blocks respectively. The positioning blocks and support blocks are movable along a second direction. The positioning pins can pass through the multiple positioning pin holes. By changing their connection position with the longitudinal rails, they can align with the length of the lithium battery pack. The mechanical gripper is driven to open and close by the fifth drive mechanism to grip the positioning pins. The mechanical gripper also moves horizontally / vertically within the workspace in conjunction with the positioning pins via the sixth drive mechanism. The workspace of the upper frame is located between the multiple positioning pins. The first direction, the second direction, and the third direction are mutually perpendicular, and the first direction and the second direction extend horizontally.

2. The automatic changeover device for the transport vehicle according to claim 1, characterized in that: The upper surface of the lifting rod is provided with multiple bearings at intervals.

3. The automatic changeover device for the transport vehicle according to claim 1, characterized in that: The width adjustment mechanism also includes a second connecting frame, on which the plum blossom sleeve, the rotary drive mechanism, and the fourth drive mechanism are all mounted.

4. The automatic changeover device for the transport vehicle according to claim 1, characterized in that: A universal coupling is provided between the plum blossom sleeve and the rotary drive mechanism.

5. The automatic changeover device for the transport vehicle according to claim 1, characterized in that: The length adjustment mechanism also includes a third connecting frame and a controller, sensor and positioner disposed on the third connecting frame.

6. The automatic changeover device for the transport vehicle according to claim 1, characterized in that: The mechanical gripper is equipped with a sensing guide rod.

7. A lithium battery pack handling device, characterized in that: include: The automatic changeover device for the transport vehicle as described in any one of claims 1-6; A transport vehicle, the transport vehicle including a detachable connection between an upper frame and a lower frame, wherein the upper frame is connected to two longitudinal rails extending in a second direction, and includes multiple transverse rails extending in a first direction, the longitudinal rails moving along the transverse rails.

8. The lithium battery pack handling device according to claim 7, characterized in that: It includes an adjusting screw arranged parallel to the transverse track, the adjusting screw being connected to the longitudinal track and moving back and forth along the first direction in conjunction with the longitudinal track.

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