Battery pack forking method

Abstract

The invention relates to the technical field of battery pack production, in particular to a battery pack forking method which comprises the following steps: step 1, when the distance among three fork arms needs to be adjusted, a first driving motor drives a gear to rotate, the gear is meshed with a rack, and the rack is fixed on a fixed cross rod, so that the gear can move on the rack after rotating, and the distance between the three fork arms is adjusted; a first driving motor can be driven to move, so that a fixed bottom plate can be driven to move, and a first telescopic air cylinder on a supporting frame can be driven to move; 2, after a first telescopic air cylinder moves to the position below the fork arm, a jacking rod is driven by the first telescopic air cylinder to conduct jacking, so that the jacking rod is inserted into an insertion hole, and the jacking rod can pull the fork arm to move at the same time when moving; 3, a first driving motor drives a gear to rotate, so that fork arms are driven to move, the positions of the fork arms are adjusted, and then the distances among the three fork arms can be adjusted; the battery pack forking device can fork battery packs of different sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack production, and particularly to a method for forklifting a battery pack. Background Art

[0002] In the new energy vehicle industry chain, the efficient transfer of battery packs is a core requirement throughout the three major links of production manufacturing, battery swapping services, and recycling and treatment. These links all need to perform a series of actions such as precise forklifting, stable lifting, and flexible transfer.

[0003] However, traditional operation methods generally have problems such as low efficiency, long operation time, and insufficient equipment compatibility. Manual hoisting not only has safety hazards, but also has low operation efficiency; although the forklift forklifting method improves the basic handling ability, due to the fixed or limited adjustable range of the forklift forks, it is difficult to adapt to battery packs of different sizes, and each adjustment requires additional time, seriously affecting the production or battery swapping rhythm. Summary of the Invention

[0004] The object of the present invention is to provide a method for forklifting a battery pack, which can forklift battery packs of different sizes.

[0005] The technical solution of the present invention:

[0006] A method for forklifting a battery pack is as follows:

[0007] Step 1: When it is necessary to adjust the distance between the three fork arms, drive the gear to rotate through the first driving motor. Since the gear meshes with the rack and the rack is fixed on the fixed crossbar, the gear can move on the rack after rotation, thereby driving the first driving motor to move, driving the fixed bottom plate to move, and further driving the first telescopic cylinder on the support frame to move;

[0008] Step 2: After the first telescopic cylinder moves under the fork arm, drive the jacking rod to jack up through the first telescopic cylinder, so that the jacking rod is inserted into the jacking hole, and the jacking rod can pull the fork arm to move simultaneously when moving;

[0009] Step 3: Then drive the gear to rotate through the first driving motor, thereby driving the fork arm to move, adjusting the position of the fork arm, and further being able to adjust the distance between the three fork arms;

[0010] Step 4: Drive the first steering gear to start through the second driving motor, so as to drive the rotating shaft to rotate, drive the second steering gear to start, drive the two ball screws to rotate, drive the sliders on the two ball screws to move up and down, and further drive the forklifting mechanism to lift;

[0011] Step 5: Drive the fork-taking mechanism to descend to the battery pack fork-taking position through the lifting mechanism. The middle fork and the lower fork of the fork arm extend so that the battery pack is located between the two limit blocks. Then, the lifting mechanism drives the fork-taking mechanism to rise, driving the battery pack to be lifted to the required height. The middle fork and the lower fork of the fork arm drive the battery pack to retract and extend in the reverse direction, and transfer the battery pack to the other side.

[0012] Further, it includes a fork arm and also includes a fork-taking mechanism. The fork-taking mechanism includes a fork-taking mounting frame, and three fork arms are arranged above the fork-taking mounting frame; first linear guides are fixed on the front cross bar, the middle cross bar and the rear cross bar of the fork-taking mounting frame, and the slide of the first linear guide is connected to the bottom of the fork arm; the distances between the three fork arms are adjusted by a variable pitch mechanism.

[0013] The variable pitch mechanism includes a fixed cross bar. A fixed cross bar is fixed between the middle cross bar and the rear cross bar on the fork-taking mounting frame, and a fixed bottom plate is arranged above the fixed cross bar; two second linear guides arranged front and back are fixed on the fixed cross bar, and the slide of the second linear guide is connected to the bottom of the fixed bottom plate; a rack is fixed between the two second linear guides on the fixed cross bar, and the rack is engaged with a gear, and the gear is driven by a first driving motor.

[0014] A first telescopic cylinder is fixed on the fixed bottom plate through a support frame. The end of the push rod of the first telescopic cylinder is fixed with a jacking rod, and the fork arm has a jacking hole for the jacking rod to insert.

[0015] Further, the slides of the first linear guides on the front cross bar and the rear cross bar are connected to the bottom of the fork arm through connecting blocks, and guide rail clamps are fixed on the connecting blocks.

[0016] Further, the fork arm includes a lower fork connected to the first linear guide. A middle fork is arranged on the top of the lower fork, and an upper fork is arranged on the top of the middle fork; limit blocks are fixed at both the front and rear ends of the upper fork, and a rubber anti-slip pad is fixed between the two limit blocks.

[0017] Further, a first magnetic grating ruler is fixed on the slide of the second linear guide.

[0018] Further, first polyurethane buffers are fixed at the four corners of the connecting block and the fork-taking mounting frame.

[0019] Further, the fork-taking mechanism is driven by a lifting mechanism; the lifting mechanism includes a lifting mounting frame. One end of the middle cross bar at the top of the lifting mounting frame is fixed with a first steering gear, and the other end is fixed with a second steering gear.

[0020] The first steering gear is driven by a second drive motor. The first output end of the first steering gear is connected to the input end of the second steering gear through a rotating shaft. Ball screw rods are connected to the second output end of the first steering gear and the output end of the second steering gear respectively. The lower end of the ball screw rod is connected to the lifting mounting frame through a bearing seat. The sliders of the two ball screw rods are respectively connected to the left and right ends of the fork mounting frame.

[0021] Furthermore, two second telescopic cylinders are fixed to both the front horizontal frame and the rear horizontal frame at the top of the lifting mounting frame. The end of the push rod of the second telescopic cylinder is connected to the fork mounting frame.

[0022] Furthermore, two third linear guides are fixed to both the left and right vertical frames of the lifting mounting frame through fixing plates. The slide table of the third linear guide is connected to the top of the fork mounting frame through a connecting frame. Hard limit bolts are arranged above the third linear guide on the fixing plate.

[0023] Furthermore, a support plate is also fixed to the fixing plate. A plurality of first wedge blocks are longitudinally fixed to the support plate. A connecting seat is fixed to the connecting frame. A connecting plate is fixed to the connecting seat through a connecting shaft. A third telescopic cylinder is fixed to the connecting plate. The push rod of the third telescopic cylinder penetrates through the connecting plate and is fixed with a second wedge block that cooperates with the first wedge block. The second wedge block penetrates through the connecting seat.

[0024] Advantages of the present invention:

[0025] (1) The distances between the three fork arms are adjusted by the variable pitch mechanism, enabling the picking up of battery packs of different sizes.

[0026] (2) The guide rail clamp can lock after adjusting the position of the fork arm to prevent the fork arm from moving.

[0027] (3) The first polyurethane buffer on the connecting block can prevent the fork arms from colliding when adjusting the position. The first polyurethane buffers at the four corners of the mounting frame are located at the inlet and outlet ends of the first linear guide to prevent the fork arms from disengaging from the first linear guide when adjusting the position.

[0028] The present invention can pick up battery packs of different sizes. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the picking mechanism.

[0030] Figure 2 is a schematic structural diagram of the fork mounting frame.

[0031] Figure 3 is a schematic diagram of the guide rail clamp.

[0032] Figure 4 It is a schematic structural diagram of a variable pitch mechanism.

[0033] Figure 5 It is a schematic diagram of a gear.

[0034] Figure 6 It is a schematic diagram of a jack.

[0035] Figure 7 It is a schematic structural diagram of a lifting mechanism.

[0036] Figure 8 It is a schematic diagram of a bearing housing.

[0037] Figure 9 It is a schematic diagram of a connecting frame.

[0038] Figure 10 It is a schematic diagram of a connecting seat.

[0039] Figure 11 It is a schematic diagram of a second wedge block.

[0040] Figure 12 It is a schematic structural diagram of the present invention. Detailed implementation manners

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] As Figures 1-12 shown, the present invention provides a method for picking up and placing a battery pack, and the method is as follows:

[0043] Step 1: When it is necessary to adjust the distance between the three fork arms, the first driving motor drives the gear to rotate. Since the gear meshes with the rack and the rack is fixed on the fixed cross bar, the gear can move on the rack after rotation, thereby driving the first driving motor to move, driving the fixed base plate to move, and further driving the first telescopic cylinder on the support frame to move;

[0044] Step 2: After the first telescopic cylinder moves under the fork arm, the first telescopic cylinder drives the jacking rod to jack up, so that the jacking rod is inserted into the jack, and the jacking rod can pull the fork arm to move simultaneously when moving;

[0045] Step 3: Then, the first driving motor drives the gear to rotate, thereby driving the fork arm to move, adjusting the position of the fork arm, and further adjusting the distance between the three fork arms;

[0046] Step 4: The second driving motor drives the first steering gear to start, driving the rotating shaft to rotate, driving the second steering gear to start, driving the two ball screws to rotate, driving the sliders on the two ball screws to move up and down, and further driving the picking and placing mechanism to lift;

[0047] Step 5: Drive the fork-taking mechanism to descend to the battery pack fork-taking position through the lifting mechanism. The middle fork and the lower fork of the fork arm extend so that the battery pack is located between the two limit blocks. Then, the lifting mechanism drives the fork-taking mechanism to rise, driving the battery pack to be lifted to the required height. The middle fork and the lower fork of the fork arm drive the battery pack to retract and extend in the reverse direction, and transfer the battery pack to the other side.

[0048] It includes a fork arm 102, and also includes a fork-taking mechanism 1. The fork-taking mechanism 1 includes a fork-taking mounting frame 101, and three fork arms 102 are arranged above the fork-taking mounting frame 101. First linear guides 103 are fixed on the front cross bar 1011, the middle cross bar 1012, and the rear cross bar 1013 of the fork-taking mounting frame 101. The slide table of the first linear guide 103 is connected to the bottom of the fork arm 102, so that the fork arm 102 can move on the first linear guide 103. The distances between the three fork arms 102 are adjusted by a variable distance mechanism 2, so that battery packs of different sizes can be forked.

[0049] The variable distance mechanism 2 includes a fixed cross bar 1014. The fixed cross bar 1014 is fixed between the middle cross bar 1012 and the rear cross bar 1013 on the fork-taking mounting frame 101. A fixed bottom plate 201 is arranged above the fixed cross bar 1014. Two second linear guides 202 arranged front and rear are fixed on the fixed cross bar 1014. The slide table of the second linear guide 202 is connected to the bottom of the fixed bottom plate 201, so that the fixed bottom plate 201 can move on the second linear guide 202. A rack 203 is fixed on the fixed cross bar 1014 between the two second linear guides 202. The rack 203 is engaged with a gear 204, and the gear 204 is driven by a first driving motor 205. The first driving motor 205 is fixed on the fixed bottom plate 201.

[0050] A first telescopic cylinder 207 is fixed on the fixed bottom plate 201 through a support frame 206. The end of the push rod of the first telescopic cylinder 207 is fixed with a jacking rod 208. The fork arm 102 is provided with an insertion hole 209 for the jacking rod 208 to insert.

[0051] When it is necessary to adjust the distance between the three fork arms 102, the first driving motor 205 drives the gear 204 to rotate. Since the gear 204 meshes with the rack 203 and the rack 203 is fixed on the fixed cross bar 1014, the gear 204 can move on the rack 203 after rotation, thereby driving the first driving motor 205 to move, driving the fixed base plate 201 to move, and further driving the first telescopic cylinder 207 on the support frame 206 to move. After the first telescopic cylinder 207 moves below the fork arm 102, the first telescopic cylinder 207 drives the jacking rod 208 to jack up, so that the jacking rod 208 is inserted into the jack 209, and the jacking rod 208 can pull the fork arm 102 to move simultaneously when moving. Then, the first driving motor 205 drives the gear 204 to rotate, thereby driving the fork arm 102 to move, adjusting the position of the fork arm 102, and further adjusting the distance between the three fork arms 102.

[0052] The sliding tables of the first linear guides 103 on the front end cross bar 1011 and the rear end cross bar 1013 are connected to the bottom of the fork arm 102 through the connecting block 3. A guide rail clamp 4 is fixed on the connecting block 3, and the fork arm 102 can be locked after the position of the fork arm 102 is adjusted through the guide rail clamp 4 to prevent the fork arm 102 from moving.

[0053] The fork arm 102 can adopt an automatic telescopic fork arm of the brand Mias. The fork arm 102 includes a lower fork 1021 connected to the first linear guide 103. A middle fork 1022 is arranged at the top of the lower fork 1021, and an upper fork 1023 is arranged at the top of the middle fork 1022. Limit blocks 1024 are fixed at both the front and rear ends of the upper fork 1023, and a rubber anti-slip pad 1025 is fixed between the two limit blocks 1024 to prevent the battery pack from slipping.

[0054] A first magnetic grating ruler 210 is fixed on the sliding table of the second linear guide 202, which can identify the adjustment position of the fork arm 102.

[0055] First polyurethane buffers 5 are fixed at the four corners of the connecting block 3 and the fork taking mounting frame 101. The first polyurethane buffer 5 on the connecting block 3 can prevent the fork arms 102 from colliding when adjusting the position. The first polyurethane buffers 5 at the four corners of the mounting frame are located at the inlet and outlet ends of the first linear guide 103 to prevent the fork arms 102 from disengaging from the first linear guide 103 when adjusting the position.

[0056] The fork taking mechanism 1 is driven by a lifting mechanism 6. The lifting mechanism 6 includes a lifting mounting frame 601. One end of the middle cross frame at the top of the lifting mounting frame 601 is fixed with a first steering gear 602. The first steering gear 602 has one input end and two output ends, and the other end is fixed with a second steering gear 620. The second steering gear 620 has one input end and one output end.

[0057] The first steering gear 602 is driven by a second drive motor 603. The first output end of the first steering gear 602 is connected to the input end of a second steering gear 620 through a rotating shaft 604. Ball screw rods 605 are connected to both the second output end of the first steering gear 602 and the output end of the second steering gear 620. The lower end of each ball screw rod 605 is connected to a lifting mounting frame 601 through a bearing block 606. Sliders 607 of the two ball screw rods 605 are respectively connected to the left and right ends of a fork mounting frame 101.

[0058] The second drive motor 603 drives the first steering gear 602 to start, causing the rotating shaft 604 to rotate, which in turn causes the second steering gear 620 to start, driving the two ball screw rods 605 to rotate, and making the sliders 607 on the two ball screw rods 605 move up and down, thereby driving the fork mechanism 1 to lift. The lifting mechanism 6 drives the fork mechanism 1 to descend to the battery pack fork position. The middle fork 1022 and the lower fork 1021 of the fork arm 102 extend so that the battery pack is located between two limit blocks 1024. Then the lifting mechanism 6 drives the fork mechanism 1 to rise, lifting the battery pack to the required height. The middle fork 1022 and the lower fork 1021 of the fork arm 102 drive the battery pack to retract and then extend in the reverse direction to transport the battery pack to the other side.

[0059] Two second telescopic cylinders 608 are fixed to both the front cross frame and the rear cross frame at the top of the lifting mounting frame 601. The end of the push rod of the second telescopic cylinder 608 is connected to the fork mounting frame 101. The second telescopic cylinder 608 is controlled by a gas circuit to maintain a constant air pressure value, so that the fork mechanism 1 is subjected to a constant force during the ascending or descending process to balance the weight of the fork mechanism 1 and the battery pack, reduce the pressure on the second drive motor 603, and extend the service life.

[0060] Two third linear guide rails 610 are fixed to both the left and right vertical frames of the lifting mounting frame 601 through fixing plates 609. The slide table of the third linear guide rail 610 is connected to the top of the fork mounting frame 101 through a connecting frame 611. The third linear guide rail 610 can play a role in limiting and guiding when the fork mounting frame 101 ascends and descends, enabling the fork mounting frame 101 to ascend and descend stably. A hard limit bolt 612 is arranged above the third linear guide rail 610 on the fixing plate 609. When the fork mounting frame 101 rises beyond the preset value and continues to rise, it will then hit the hard limit bolt 612, preventing the fork mounting frame 101 from continuing to rise and preventing damage to the mechanism and the battery pack.

[0061] A support plate 613 is also fixed on the fixed plate 609, and a plurality of first wedge blocks 614 are longitudinally fixed on the support plate 613; a connecting seat 615 is fixed on the connecting frame 611, the connecting seat 615 is fixed to a connecting plate 617 via a connecting shaft 616, and a third telescopic cylinder 618 is fixed on the connecting plate 617; the push rod of the third telescopic cylinder 618 penetrates through the connecting plate 617 and is fixed with a second wedge block 619 that cooperates with the first wedge block 614, and the second wedge block 619 penetrates through the connecting seat 615. When an unexpected situation occurs during operation, causing the fork mounting frame 101 to fall, the third telescopic cylinder 618 pushes the second wedge block 619 to engage with the second wedge block 619, thereby preventing the falling action of the fork mounting frame 101 and protecting the safety of personnel and mechanisms.

[0062] Second polyurethane buffers 7 are fixed at the four corners of the top of the lifting mounting frame 601, which can play a buffering role when the fork mounting frame 101 falls.

[0063] The above are only the preferred embodiments of the present invention, and should not be construed as limiting the present application. Any equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims

1. A method for picking up and placing a battery pack, characterized in that, The method is as follows: Step 1: When the distance between the three fork arms needs to be adjusted, the first driving motor drives the gear to rotate. Since the gear meshes with the rack and the rack is fixed on the fixed cross bar, the gear can move on the rack after rotation, thereby driving the first driving motor to move, driving the fixed base plate to move, and further driving the first telescopic cylinder on the support frame to move; Step 2: After the first telescopic cylinder moves below the fork arm, the first telescopic cylinder drives the jacking rod to jack up, so that the jacking rod is inserted into the jacking hole, and the jacking rod can pull the fork arm to move simultaneously when moving; Step 3: Then, the first driving motor drives the gear to rotate, thereby driving the fork arm to move, adjusting the position of the fork arm, and further being able to adjust the distance between the three fork arms; Step 4: The second driving motor drives the first steering gear to start, driving the rotating shaft to rotate, driving the second steering gear to start, driving the two ball screws to rotate, driving the sliders on the two ball screws to move up and down, and further driving the fork picking mechanism to lift and lower; Step 5: The lifting mechanism drives the fork picking mechanism to descend to the battery pack fork picking position. The middle fork and the lower fork of the fork arm extend so that the battery pack is located between the two limit blocks. Then the lifting mechanism drives the fork picking mechanism to rise, driving the battery pack to be lifted to the required height. The middle fork and the lower fork of the fork arm drive the battery pack to retract and extend in the reverse direction, and transfer the battery pack to the other side.

2. A method for forklifting a battery pack according to claim 1, including a forklift arm, characterized in that, It further includes a fork picking mechanism. The fork picking mechanism includes a fork picking mounting frame, and three fork arms are arranged above the fork picking mounting frame; first linear guides are fixed on the front cross bar, the middle cross bar and the rear cross bar of the fork picking mounting frame, and the slide table of the first linear guide is connected to the bottom of the fork arm; the distance between the three fork arms is adjusted by a variable distance mechanism; The variable distance mechanism includes a fixed cross bar. A fixed cross bar is fixed between the middle cross bar and the rear cross bar on the fork picking mounting frame, and a fixed base plate is arranged above the fixed cross bar; two second linear guides arranged front and back are fixed on the fixed cross bar, and the slide table of the second linear guide is connected to the bottom of the fixed base plate; a rack is fixed between the two second linear guides on the fixed cross bar, and the rack meshes with a gear, and the gear is driven by a first driving motor; A first telescopic cylinder is fixed on the fixed base plate through a support frame, a jacking rod is fixed at the end of the push rod of the first telescopic cylinder, and the fork arm has a jacking hole for the jacking rod to insert.

3. A method for forklifting a battery pack according to claim 2, wherein The slide tables of the first linear guides on the front cross bar and the rear cross bar are connected to the bottom of the fork arm through connecting blocks, and guide rail clamps are fixed on the connecting blocks.

4. A method for forklifting a battery pack according to claim 2, wherein The fork arm includes a lower fork connected to the first linear guide. A middle fork is arranged at the top of the lower fork, and an upper fork is arranged at the top of the middle fork; limit blocks are fixed at both the front and rear ends of the upper fork, and a rubber anti-slip pad is fixed between the two limit blocks.

5. A method for forklifting a battery pack according to claim 2, characterized in that, A first magnetic grating ruler is fixed on the slide table of the second linear guide.

6. A method for forklifting a battery pack according to claim 3, characterized in that, First polyurethane buffers are fixed at the four corners of the connecting block and the fork picking mounting frame.

7. A method for forklifting a battery pack according to any one of claims 2-6, characterized in that The fork-taking mechanism is driven by a lifting mechanism; the lifting mechanism includes a lifting mounting frame, and at one end of the middle cross-frame at the top of the lifting mounting frame, a first steering gear is fixed, and at the other end, a second steering gear is fixed; The first steering gear is driven by a second driving motor, and the first output end of the first steering gear is connected to the input end of the second steering gear through a rotating shaft; the second output end of the first steering gear and the output end of the second steering gear are both connected with ball screws, and the lower ends of the ball screws are connected to the lifting mounting frame through bearing seats; the sliders of the two ball screws are respectively connected to the left and right ends of the fork-taking mounting frame.

8. A method for forklifting a battery pack according to claim 7, characterized in that, Two second telescopic cylinders are fixed on both the front-side cross-frame and the rear-side cross-frame at the top of the lifting mounting frame, and the end of the push rod of the second telescopic cylinder is connected to the fork-taking mounting frame.

9. A method for forklifting a battery pack according to claim 7, characterized in that, Two third linear guides are fixed on both the left and right vertical frames of the lifting mounting frame through fixing plates, and the sliding table of the third linear guide is connected to the top of the fork-taking mounting frame through a connecting frame; a hard limit bolt is arranged above the third linear guide on the fixing plate.

10. A method for forklifting a battery pack according to claim 9, characterized in that, A support plate is also fixed on the fixing plate, and a plurality of first wedge-shaped blocks are longitudinally fixed on the support plate; a connecting seat is fixed on the connecting frame, and a connecting plate is fixed to the connecting seat through a connecting shaft, and a third telescopic cylinder is fixed on the connecting plate; the push rod of the third telescopic cylinder penetrates through the connecting plate and is fixed with a second wedge-shaped block that cooperates with the first wedge-shaped block, and the second wedge-shaped block penetrates through the connecting seat.

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