A battery pack box carrying, lifting and overturning tool and box clamping method

Abstract

The application relates to a carrying, lifting and overturning tool for a battery pack box and a box clamping method, and belongs to the technical field of battery pack tools. The tool comprises a gantry, driving cylinders, a lifting and overturning mechanism and a clamping mechanism. The longitudinal supports on the two sides of the gantry respectively comprise two parallel and spaced longitudinal rods. The lifting and overturning mechanism is respectively installed on the two longitudinal rods, and the driving cylinders connected with the lifting and overturning mechanism are respectively installed at the two ends of the top of the gantry. The lifting and overturning mechanism comprises a rotating arm, a large sun gear and a rack. The rack is lifted under the driving of the driving cylinders. The large sun gear is lifted or rotated together with the rotating arm under the driving of the two racks. The clamping mechanism comprises a clamping arm, a clamping wheel, a small sun gear, a planetary gear set and a cam assembly. Under the driving of the driving cylinders, the small sun gear drives the clamping arm and the box to rotate through the planetary gear set and the cam assembly. The application can quickly and continuously complete a whole set of operation actions such as clamping, lifting, overturning and carrying the box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery pack tooling, in particular to a battery pack box carrying, lifting and overturning tool and box clamping method. BACKGROUND

[0002] The actions of clamping, lifting, overturning and carrying of the battery pack box are completed by independent tools or people, for example, the clamping of the battery pack box is completed by a cylinder or a suction cup, and the actions of lifting, overturning and carrying are completed by a mechanical arm or a numerical control XYZ workbench. The existing simple tool can only complete 1-2 actions, and when the whole set of operations are performed, the tool needs to be switched due to different processes. The device and tool capable of simultaneously completing multiple operation actions are complex and expensive in structure. SUMMARY

[0003] To solve the problems existing in the prior art, the present application provides a battery pack box carrying, lifting and overturning tool and box clamping method, which can quickly and continuously complete a whole set of operation actions such as clamping, lifting, overturning and carrying the box.

[0004] To achieve the above-mentioned purpose, the present application adopts the following specific technical solutions:

[0005] A battery pack box carrying, lifting and overturning tool, the tool comprising a gantry, a driving cylinder, a lifting and overturning mechanism and a clamping mechanism;

[0006] The longitudinal supports on both sides of the gantry respectively comprise two longitudinally arranged longitudinal rods arranged in parallel and at intervals; the lifting and overturning mechanism is respectively mounted on the two longitudinal rods; and the driving cylinder connected to the lifting and overturning mechanism is respectively mounted at the two ends of the top of the gantry;

[0007] The lifting and overturning mechanism comprises an arm, a large sun gear and a rack; the rack is lifted under the driving of the driving cylinder; the large sun gear is connected to the rack in meshing connection between the two racks; the center of the large sun gear is connected to the middle part of the arm; and the large sun gear is lifted or rotated together with the arm under the driving of the two racks;

[0008] The clamping mechanism comprises a clamping arm, a clamping wheel, a small sun gear, a planetary gear set and a cam assembly; the clamping arm is connected with the rotating arm and can rotate relative to the rotating arm; two clamping wheels are arranged on the two ends of the clamping arm in an upper and lower manner, and the clamping arm clamps the side of the box through the upper and lower clamping wheels; the other end of the clamping arm is open, and the planetary gear set and the small sun gear are respectively installed on the inner side of the rotating arm, and the small sun gear is coaxially connected with the large sun gear; the planetary gear set is connected with the clamping arm through the cam assembly; under the driving of the driving cylinder, the small sun gear drives the clamping arm and the box to rotate through the planetary gear set and the cam assembly.

[0009] Further, the cam assembly comprises a sliding groove cam, a sliding pin and a sliding pin groove; the inner side of the sliding groove cam is provided with a sliding groove, and the middle of the bottom surface of the sliding groove is provided with a clamping point; the lower part of the sliding groove cam is connected with the planetary gear set; the clamping arm is provided with a long sliding groove; the sliding pin groove is fixed on the inner side of the clamping arm, and the sliding pin groove is in a U-shaped structure; one end of the sliding pin is slidably installed in the sliding pin groove, and the other end is inserted into the sliding groove of the sliding groove cam through the long sliding groove; the planetary gear set drives the sliding groove cam to rotate, the sliding pin moves along the sliding groove, and the clamping arm moves synchronously under the driving of the sliding pin and the rotating arm.

[0010] Further, the sliding groove of the sliding groove cam is in a whole triangular shape, and the bottom surface of the sliding groove is a ring-shaped anti-tension sawtooth surface for allowing the sliding pin to slide in one direction.

[0011] Further, the planetary gear set comprises a second planetary gear, a first planetary gear and a synchronous belt; two first planetary gears are symmetrically installed on the rotating arm on the two sides of the small sun gear; the two first planetary gears are respectively connected with the small sun gear through the synchronous belt, and two second planetary gears are symmetrically installed on the inner sides of the two sides of the rotating arm and are respectively connected with the cam assembly; the two second planetary gears are respectively meshed with the two first planetary gears.

[0012] Further, the first planetary gear and the second planetary gear are respectively bevel gears.

[0013] Further, the second planetary gear is connected with the sliding groove cam of the cam assembly, the center position of the second planetary gear is aligned with the clamping point of the sliding groove cam, and the second planetary gear drives the cam assembly to perform cam motion.

[0014] Further, the lifting and overturning mechanism further comprises a first sliding block, a first guide rail, a second guide rail, a second sliding block and a rotating arm seat.

[0015] Two first guide rails are symmetrically installed on the two longitudinal rods on the side close to the center of the portal frame; the rack is installed on the first guide rail through the first slider;

[0016] The second guide rails are symmetrically installed on the opposite inner sides of the two longitudinal rods, and the second sliders are slidably installed on the second guide rails, and the two sides of the rotating arm base are connected with the second sliders respectively; the large sun gear is installed in the middle of the front end face of the rotating arm base through a rotating hole, and the large sun gear can rotate relative to the rotating arm base under the driving of the rack; when the two racks are synchronously lifted and lowered, the large sun gear and the rotating arm base move along the first guide rail and the second guide rail together.

[0017] Further, the rotating arm is in a U-shaped structure, and short arms towards the central axis of the rotating arm are arranged on the two sides of the opening of the rotating arm; the short arms are connected with the clamping arms through pins.

[0018] Further, the top portions of the longitudinal supports on the two sides of the portal frame are connected through an upper cross plate; the longitudinal support further comprises a lower cross rod and a roller; the bottom ends of the two longitudinal rods are fixed in the middle of the lower cross rod, and the lower cross rod is perpendicular to the upper cross plate, and the rollers are installed on the bottom face of the lower cross rod at the two ends.

[0019] The application also discloses a box clamping method of a carrying, lifting and overturning tool for a battery pack box body.

[0020] S1, a driving cylinder is installed on the top of the portal frame, the lifting and overturning mechanisms installed on the two sides of the portal frame are connected with the clamping mechanisms through pins, the shaft part of the sliding pin is placed at the release point position at the uppermost end of the sliding groove cam sliding groove, and at this time, the clamping arms are inclined downward on the lifting and overturning mechanisms;

[0021] S2, the box body is placed between the two clamping mechanisms; the rotating arm is driven by the driving cylinder to move downward from top to bottom; when the clamping wheels touch the lifting lugs on the two sides of the box body, the sliding groove cam drives the shaft part of the sliding pin to slide downward in the sliding groove of the sliding groove cam until the shaft part is pressed to the first lowest point position of the sliding groove, the rotating arm and the clamping arm stop moving downward, the clamping arm rotates relative to the rotating arm, and the posture of the clamping arm first tends to be horizontal and then reversely inclines.

[0022] S3, the driving cylinder lifts the clamping mechanisms through the lifting and overturning mechanisms, the shaft part moves to the clamping point, and the clamping wheels arranged upward and downward completely clamp the lifting lugs of the box body, and the clamping arm changes from the reverse inclination to the horizontal state.

[0023] S4, press the clamping mechanism again, the shaft part is pressed to the second lowest point position of the sliding groove cam sliding groove, and the clamping mechanism is lifted again, the clamping arm is in reverse inclined state again, the clamping structure is lifted again, the shaft part is lifted to the release point position of the sliding groove cam, and the clamping arm is released from the box.

[0024] The beneficial effects of the present application are:

[0025] The present application realizes the clamping, lifting, turning and carrying of the box through a mechanical tool, greatly improves the work efficiency, and has simple structure, convenient maintenance and low production and maintenance cost.

[0026] The present application drives the large sun gear to rotate and lift through the meshing transmission of the gear and the rack, and then realizes the clamping, rotation and lifting of the box, and ensures the stable and reliable action of the large sun gear through the cooperation structure of the guide rail and the sliding block. The present application drives the sliding groove cam to rotate through the power transmission of the planetary gear set, cooperates with the sliding pin to lock the clamping mechanism, adjusts the turning angle of the box through the clamping mechanism and the lifting and turning mechanism.

[0027] The sliding groove bottom surface provided in the sliding groove cam of the present application is a ring-shaped anti-tension sawtooth surface, which ensures the sliding pin to slide in the sliding groove in sequence and counterclockwise.

[0028] The present application can conveniently realize the carrying of the box through the rollers at the bottom of the gantry. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a component structure diagram of the carrying, lifting and turning tool of the battery pack box of the present application;

[0030] Figure 2 It is a structure and working principle diagram of the lifting and turning mechanism in the present application;

[0031] Figure 3 It is a component diagram of the clamping mechanism in the present application;

[0032] Figure 4 It is a structure and working principle diagram of the sliding groove cam and the sliding pin of the clamping mechanism in the present application;

[0033] Figure 5 It is a motion process diagram of clamping the box in the present application;

[0034] Figure 6 It is an orientation diagram of the two sliding groove cams when the box is at +0° in the present application;

[0035] Figure 7 It is an orientation diagram of the two sliding groove cams when the box is at 45° in the present application;

[0036] Figure 8The figure shows the orientation of the two chute cams of the box body at 90° in the application.

[0037] Wherein: 1-gantry, 2-box body, 3-driving cylinder, 4-lifting and turning mechanism, 401-turning arm, 402-large sun gear, 403-rack, 404-first sliding block, 405-cylinder rod, 406-first guide rail, 407-second guide rail, 408-second sliding block, 409-turning arm seat, 5-clamping mechanism, 501-clamping arm, 50101-rotary hole, 502-clamping wheel, 503-second planetary gear, 504-chute cam, 50401-clamping point, 505-first planetary gear, 506-synchronous belt, 507-small sun gear, 508-sliding pin, 50801-shaft part, 509-sliding pin groove. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions of the present application, the application will be further described in detail below in combination with the drawings and examples.

[0039] The up, down, left, right, front and back orientation terms in the present application file are established based on the positional relationship shown in the drawings. Different drawings may change the corresponding positional relationship, so it cannot be understood as a limitation on the protection scope.

[0040] In the present application, the terms "mounting", "connecting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, it can also be detachably connected, it can also be integrally connected, it can also be mechanically connected, it can also be electrically connected or can communicate with each other, it can also be directly connected, it can also be indirectly connected through an intermediate medium, it can be the interconnection of two components, or it can be the interaction relationship of two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific situation.

[0041] The present embodiment describes a battery pack box body carrying, lifting and turning tool and a box clamping method, which can realize clamping, lifting, turning, carrying and other work through a set of tooling, without switching tooling.

[0042] As shown in Figure 1 The tooling includes a gantry 1, a driving cylinder 3, a lifting and turning mechanism 4 and a clamping mechanism 5, both ends of the box body 2 are clamped on the lifting and turning mechanism 4 through the clamping mechanism 5, and the two lifting and turning mechanisms 4 are symmetrically installed on the inner side of the gantry 1, and two driving cylinders 3 are symmetrically installed on the top of the lifting and turning mechanism 4 to provide power for the lifting and turning mechanism 4.

[0043] The gantry 1 is composed of longitudinal supports and an upper cross plate, and the top of the two sets of longitudinal supports is connected by the upper cross plate. In this embodiment, the longitudinal supports include two parallel and spaced longitudinal rods, a support rod, a lower cross rod and a roller, the bottom ends of the two longitudinal rods are fixed to the middle part of the lower cross rod, the lower cross rod is perpendicular to the upper cross plate, and the lower cross rod is connected to the lower cross rod on both sides of the longitudinal supports through the support rod to enhance the support strength of the longitudinal supports. The roller is installed at the bottom of the lower cross rod at both ends, which facilitates the carrying of the tooling and the box body 2 clamped by the clamping mechanism 5.

[0044] As shown in Figure 2 The lifting and overturning mechanism 4 includes a rotating arm 401, a large sun gear 402, a rack 403, a first sliding block 404, a cylinder rod 405, a first guide rail 406, a second guide rail 407, a second sliding block 408 and a rotating arm seat 409.

[0045] The two first guide rails 406 are installed in parallel on the two longitudinal rods on the side of the longitudinal supports facing the center of the gantry 1, and the second guide rails 407 are symmetrically installed on the opposite inner sides of the two longitudinal rods. The two first sliding blocks 404 are installed in parallel on the first guide rails 406 and can slide along the first guide rails 406, the rack 403 is fixed on the first sliding block 404, the top end of the rack 403 is connected to the bottom end of the cylinder rod 405, and the top end of the cylinder rod 405 is connected to the driving cylinder 3. Under the drive of the driving cylinder 3, the cylinder rod 405 drives the rack 403 to rise and fall along the first guide rail 406. The second sliding block 408 is slidingly installed on the second guide rail 407, the rotating arm seat 409 is connected to the second sliding block 408 on both sides, and is placed between the two longitudinal rods of the longitudinal supports. The rotating arm seat 409 can move along the second guide rail 407 through the second sliding block 408. The large sun gear 402 has a rotating hole in the center of the inner end face, and the large sun gear 402 is installed in the middle of the front end face of the rotating arm seat 409 through the rotating hole. The large sun gear 402 is connected with the racks 403 on both sides and can rotate relative to the rotating arm seat 409 under the drive of the racks 403. When the rack 403 rises and falls, the large sun gear 402 moves along the second guide rail 407 through the second sliding block 408. The rotating arm 401 is fixed to the center of the outer end face of the large sun gear 402 in the middle part, and is used for installing the clamping mechanism 5. Preferably, the rotating arm 401 of this embodiment is in U-shaped structure, and has short arms on both sides of the opening, which are directed to the center axis of the rotating arm 401, and are used for limiting the second planetary gear 503 of the clamping mechanism 5.

[0046] The large sun gear 402 drives the rotating arm 401 to move together under the lifting action of the two racks 403. When the two racks 403 are driven by the driving cylinder 3 to move upwards, the large sun gear 402 and the rotating arm 401 are simultaneously lifted upwards. When the left rack 403 moves upwards and the right rack 403 moves downwards, the large sun gear 402 and the rotating arm 401 rotate clockwise. When the left rack 403 moves downwards and the right rack 403 moves upwards, the large sun gear 402 and the rotating arm 401 rotate counterclockwise. When the two racks 403 simultaneously move downwards, the large sun gear 402 and the rotating arm 401 move downwards.

[0047] The clamping mechanism 5, as shown in Figure 3 includes clamping arms 501, clamping wheels 502, second planetary gears 503, sliding groove cams 504, first planetary gears 505, synchronous belts 506, small sun gears 507, sliding pins 508, and sliding pin grooves 509.

[0048] The clamping arm 501 has an H-shaped structure, and two symmetrical rotating holes 50101 (see Figure 4 ) are arranged on the two sides of the clamping arm 501. The clamping arm 501 is installed on the short arm end of the rotating arm 401 through a pin shaft. The clamping arm 501 can rotate relative to the rotating arm 401 around the pin shaft through the rotating hole 50101.

[0049] Two clamping wheels 502 are arranged on the two ends of the clamping arm 501 on the side of the opening, and are arranged in an upper and lower interval. The clamping wheels 502 are used to clamp the lifting lugs at the end of the box body 2, so that the box body 2 is clamped by the cooperation of the two clamping arms 501. The upper and lower interval between the two clamping wheels 502 matches the thickness of the lifting lugs. The clamping arm 501 with the corresponding interval clamping wheel 502 can be replaced according to the thickness of the lifting lugs of different box bodies 2, so as to expand the use range of the tool.

[0050] The small sun gear 507 is coaxially connected with the large sun gear 402 and is installed on the rotating arm 401 between the two ends of the opening on the other side of the clamping arm 501. The center shaft of the small sun gear 507 is coaxial with the center of the clamping arm 501. Two first planetary gears 505 are symmetrically installed on the rotating arm 401 with the center shaft of the small sun gear 507 as the center. The two first planetary gears 505 are connected with the small sun gear 507 through the synchronous belt 506. The small sun gear 507 drives the two first planetary gears 505 to rotate through the synchronous belt 506. At the same time, two second planetary gears 503 are symmetrically installed on the inner sides of the two arms of the rotating arm 401 on the two sides of the end of the clamping arm 501. The first planetary gear 505 and the second planetary gear 503 are bevel gears, and the second planetary gear 503 is in meshing transmission connection with the first planetary gear 505.

[0051] The center position of the second planetary gear 503 is centered with the clamping point of the sliding groove cam 504 and is fixedly connected. The inner side of the sliding groove cam 504 has a sliding groove, and the sliding groove as a whole is triangular. Figure 4The bottom surface of the sliding groove is a ring-shaped anti-pulling sawtooth surface. The sliding pin groove 509 is fixed inside the clamping arm 501 opposite the second planetary gear 503 and is disposed on both sides of the clamping arm 501. The sliding pin groove 509 has a U-shaped structure with a U-shaped groove. The side arm of the clamping arm 501 connected with the sliding pin groove 509 is provided with a long sliding groove matching the U-shaped groove of the sliding pin groove 509. The sliding pin 508 is composed of a square sliding block and an axial part 50801 coaxially connected. The square sliding block is connected in the U-shaped groove of the sliding pin groove 509 and can slide along the U-shaped groove. The axial part 50801 passes through the long sliding groove on the side arm and is inserted into the sliding groove of the sliding groove cam 504. The axial part 50801 of the sliding pin 508 slides along the sliding groove once, and the clamping arm 501 acts once. The long sliding groove on the side arm of the clamping arm 501 ensures the sliding range of the sliding pin 508 and avoids the sliding pin 508 from being separated from the sliding groove cam 504 and the sliding pin groove 509 during sliding. At the same time, the long sliding groove drives the clamping arm 501 to move up and down together with the sliding pin 508 when the sliding pin 508 slides up and down, thereby adjusting the posture of the clamping arm 501, and realizing the clamping and loosening of the box body 2.

[0052] The top surface of the sliding groove of the sliding groove cam 504 is a loosening point, the bottom surface of the sliding groove of the sliding groove cam 504 is a first lowest point and a second lowest point, and the middle part of the bottom surface of the sliding groove of the sliding groove cam 504 is a clamping point 50401.

[0053] When the driving cylinder 3 drives the rack 403 to move, the large sun gear 402 drives the rotating arm 401 and the small sun gear 507 to move up and down and rotate synchronously. The small sun gear 507 drives the sliding groove cam 504 to rotate through the first planetary gear 505 and the second planetary gear 503. The sliding groove cam 504 drives the clamping arm 501 to rotate through the sliding pin 508. The clamping arm 501 drives the box body 2 to rotate together.

[0054] When the clamping arm 501 moves, the axial part 50801 of the sliding pin 508 moves along the sliding groove of the sliding groove cam 504. Because the bottom surface of the sliding groove is a ring-shaped anti-pulling sawtooth surface, the axial part 50801 of the sliding pin 508 slides in the sliding groove of the sliding groove cam 504 in a single direction counterclockwise in sequence.

[0055] The process of clamping and loosening the box body 2 using the tooling of the embodiment is as shown in the following figure: Figure 5

[0056] 1. Install the driving cylinder 3 on the top of the gantry 1. The lifting and overturning mechanism 4 installed on both sides of the gantry 1 is connected to the clamping mechanism 5 through a pin shaft. The axial part 50801 of the sliding pin 508 is placed at the loosening point position at the uppermost end of the sliding groove of the sliding groove cam 504. At this time, the clamping arm 501 is in a downwardly inclined state on the lifting and overturning mechanism 4 and is in a loosening posture. At this time, the clamping arm 501 does not clamp the box body 2.

[0057] ​2, the box 2 is placed between the two clamping mechanisms 5; drive cylinder 3 drives the swing arm 401 to move downward from top to bottom, when the clamping wheel 502 touches the lifting lugs on both sides of the box 2, the shaft part 50801 of the slide pin 508 is driven by the slide cam 504 to slide downward in the slide groove of the slide cam 504 until the shaft part 50801 is pressed to the first lowest point position, the lifting and overturning mechanism 4 and the clamping arm 501 cannot move downward any more due to the resistance of the lifting lugs, the clamping arm 501 rotates relative to the swing arm 401 through the rotary hole 50101, forcing the clamping arm 501 to change its posture from tilting to horizontal, and then reverse tilting;

[0058] 3, the drive cylinder 3 drives the clamping mechanism 5 upward through the lifting and overturning mechanism 4, the shaft part 50801 moves to the clamping point 50401, at this time the clamping wheels 502 arranged above and below completely clamp the lifting lugs of the box 2, and the clamping arm 501 changes from reverse tilting to horizontal state;

[0059] 4, press the clamping mechanism 5 downward again, the shaft part 50801 of the slide pin 508 is pressed to the second lowest point position again, and the clamping mechanism 5 is lifted again, the clamping arm 501 changes from horizontal state to reverse tilting state again, the clamping mechanism 5 is lifted again, and the shaft part 50801 is lifted to the release point position of the slide cam 504, at this time the clamping arm 501 releases the box 2.

[0060] The box 2 is overturned by a certain angle under the action of the clamping arm 501, the swing arm 401, the large sun gear 402 and the small sun gear 507. Specifically, the small sun gear 507 drives the slide cam 504 on both sides to adjust the orientation of itself in reverse through the first planetary gear 505, the second planetary gear 503 and the synchronous belt 506, as shown in Figure 6 to Figure 8 When the box 2 is in +0° state (the included angle between the surface of the box 2 and the horizontal plane), the orientations of the slide cams 504 on both sides (i.e. the included angle between the axis of the slide cam 504 and the horizontal plane) are +90°, +90° respectively. When the box 2 is turned to +45°, the orientations of the slide cams 504 on both sides are +135°, +45° respectively. When the box 2 is turned to +90°, the orientations of the slide cams 504 on both sides are +180°, +0° respectively, and the movement directions of the shaft parts 50801 of the clamping arms 501 in the slide cams 504 are opposite. Because the two slide pins 508 driven by the clamping arm 501 can only make the clamping arm 501 move in one direction, it can ensure that the shaft part 50801 of the slide pin 508 always remains between the first lowest point and the clamping point in the slide groove of the slide cam 504, preventing the box 2 from falling off due to the release of the clamping arm 501.

[0061] Although the principles of the present application have been described in connection with the preferred embodiments thereof with reference to the drawings, it should be understood that the application is not limited to the construction and arrangements of the preferred embodiments as set forth above and above. The skilled in the art will appreciate that various adaptations and modifications of the preferred embodiments described above can be accomplished using equivalent means, without departing from the scope of the present application. Accordingly, the application is not limited to the specific embodiments described above, but only by the scope of the appended claims.

Claims

1. A carrying, lifting and turning tool for a battery pack case, characterized by, The tooling comprises a portal frame (1), a driving cylinder (3), a lifting and overturning mechanism (4) and a clamping mechanism (5); The longitudinal supports on both sides of the portal frame (1) each comprise two parallel and spaced longitudinal rods; the lifting and overturning mechanism (4) is mounted on the two longitudinal rods respectively; the driving cylinder (3) is mounted at the top of the portal frame (1) and connected with the lifting and overturning mechanism (4); The lifting and overturning mechanism (4) comprises a rotating arm (401), a large sun gear (402) and a rack (403); the rack (403) is lifted under the driving of the driving cylinder (3); the large sun gear (402) is connected with the rack (403) in meshing manner between the two racks (403); the center of the large sun gear (402) is connected with the middle part of the rotating arm (401); the large sun gear (402) is lifted or rotated together with the rotating arm (401) under the driving of the two racks (403); The clamping mechanism (5) comprises a clamping arm (501), clamping wheels (502), a small sun gear (507), a planetary gear set and a cam assembly; the clamping arm (501) is connected with the rotating arm (401) and can rotate relative to the rotating arm (401); the two ends of the clamping arm (501) with openings are arranged in an upper and lower spaced manner respectively; the clamping arm (501) clamps the side of the box body (2) through the upper and lower clamping wheels (502); the other end of the clamping arm (501) with an opening is provided with the planetary gear set and the small sun gear (507) which are mounted on the inner side of the rotating arm (401) and coaxially connected with the large sun gear (402); the planetary gear set is connected with the clamping arm (501) through the cam assembly; The cam assembly comprises a sliding groove cam (504), a sliding pin (508) and a sliding pin groove (509); the inner side of the sliding groove cam (504) is provided with a sliding groove, and the bottom surface of the sliding groove is provided with a clamping point (50401); the lower part of the sliding groove cam (504) is connected with the planetary gear set; the clamping arm (501) is provided with a long sliding groove; the sliding pin groove (509) is fixed on the inner side of the clamping arm (501) and has a U-shaped structure; the sliding pin (508) is coaxially connected with a square sliding block and a shaft part (50801); the square sliding block is slidingly installed in the sliding pin groove (509), and the shaft part (50801) is inserted into the sliding groove of the sliding groove cam (504) through the long sliding groove; the planetary gear set drives the sliding groove cam (504) to rotate, the sliding pin (508) moves along the sliding groove, and the clamping arm (501) moves synchronously under the driving of the sliding pin (508) and the rotating arm (401). The planetary gear set comprises a second planetary gear (503), a first planetary gear (505) and a synchronous belt (506); two first planetary gears (505) are symmetrically installed on the rotating arm (401) on both sides of the small sun gear (507); the two first planetary gears (505) are connected with the small sun gear (507) through the synchronous belt (506), and two second planetary gears (503) are symmetrically installed on the inner sides of the two side arms of the rotating arm (401) and connected with the chute cam (504) respectively; the two second planetary gears (503) are connected with the two first planetary gears (505) respectively. Under the driving of the driving cylinder (3), the small sun gear (507) drives the clamping arm (501) and the box (2) to rotate through the planetary gear set and the cam assembly.

2. The battery pack case handling, lifting and tipping fixture of claim 1, wherein, The chute of the chute cam (504) is in a whole triangular shape, and the bottom surface of the chute is a ring-shaped anti-tension sawtooth surface for allowing the slide pin (508) to slide in one direction.

3. The battery pack case handling, lifting and tipping fixture of claim 1, wherein, The first planetary gear (505) and the second planetary gear (503) are bevel gears respectively.

4. The battery pack case handling, lifting and tipping fixture of claim 1, wherein, The second planetary gear (503) is connected with the chute cam (504) of the cam assembly, the center of the second planetary gear (503) is aligned with the clamping point (50401) of the chute cam (504), and the second planetary gear (503) drives the cam assembly to perform cam motion.

5. The battery pack case handling, lifting and tipping fixture of claim 1, wherein, The lifting and overturning mechanism (4) further comprises a first sliding block (404), a first guide rail (406), a second guide rail (407), a second sliding block (408) and a rotating arm seat (409). Two first guide rails (406) are installed in parallel on the two longitudinal rods on the side facing the center of the portal frame (1); the rack (403) is installed on the first guide rail (406) through the first sliding block (404); The second guide rail (407) is symmetrically installed on the opposite inner sides of the two longitudinal rods, the second sliding block (408) is slidingly installed on the second guide rail (407), and the rotating arm seat (409) is connected with the second sliding block (408) on both sides; the big sun gear (402) is installed in the middle of the front end face of the rotating arm seat (409) through a rotating hole, the big sun gear (402) can rotate relative to the rotating arm seat (409) under the driving of the rack (403), and the big sun gear (402) and the rotating arm seat (409) move along the first guide rail (406) and the second guide rail (407) when the two racks (403) synchronously ascend and descend.

6. The battery pack case handling, lifting and tipping fixture of claim 1, wherein, The rotating arm (401) is in a U-shaped structure, and short arms facing the central axis of the rotating arm (401) are arranged on both sides of the opening of the rotating arm (401); the short arms are connected with the clamping arm (501) through a pin shaft.

7. The battery pack case handling, lifting and tipping fixture of claim 1, wherein, The longitudinal support top of the portal frame (1) is connected by an upper cross plate; the longitudinal support further comprises a lower cross rod and a roller; the bottom ends of two longitudinal rods are fixed in the middle of the lower cross rod, the lower cross rod is perpendicular to the upper cross plate, and the roller is installed at the bottom surface of the lower cross rod.

8. A method of clamping a battery pack case based on the handling, lifting and turning tool of the case of any one of claims 1 to 7, characterized by, The method for clamping the tool box (2) comprises the following steps: S1, a driving cylinder (3) is installed on the top of the portal frame (1), the lifting and overturning mechanism (4) installed on both sides of the portal frame (1) is connected with the clamping mechanism (5) through a pin shaft, the shaft part (50801) of the sliding pin (508) is placed at the release point position at the uppermost end of the sliding groove of the sliding groove cam (504), at this time, the clamping arm (501) is inclined downward on the lifting and overturning mechanism (4); S2, the box (2) is placed between the two clamping mechanisms (5); the driving cylinder (3) drives the rotating arm (401) to move downward from top to bottom; when the clamping wheel (502) touches the lifting lugs on both sides of the box (2), the sliding groove cam (504) drives the shaft part (50801) of the sliding pin (508) to slide downward in the sliding groove of the sliding groove cam (504), until the shaft part (50801) is pressed to the first lowest point position of the sliding groove, the rotating arm (401) and the clamping arm (501) stop moving downward, the clamping arm (501) rotates relative to the rotating arm (401), and the posture of the clamping arm (501) first tends to be horizontal, and then reversely inclines; S3, the driving cylinder (3) lifts the clamping mechanism (5) through the lifting and overturning mechanism (4), the shaft part (50801) moves to the clamping point (50401), the clamping wheels (502) arranged above and below completely clamp the lifting lugs of the box (2), and the clamping arm (501) changes from reverse inclination to horizontal state; S4, the clamping mechanism (5) is pressed downward again, the shaft part (50801) is pressed to the second lowest point position of the sliding groove of the sliding groove cam (504), the clamping mechanism (5) is lifted again, the clamping arm (501) is in reverse inclination state again, the clamping mechanism (5) is lifted again, the shaft part (50801) is lifted to the release point position of the sliding groove cam (504), and the clamping arm (501) releases the box (2).

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