Method for grabbing rough stone slabs with a tray

Abstract

The present invention relates to the technical field of stone slab transportation, and specifically to a method for grabbing rough stone slabs with a pallet, comprising the following steps: S1, placing the stone slab; S2, positioning the flip suction cup rack; S3, locking the pallet; S4, adsorbing the stone slab; S5, exporting the stone slab. The present invention uses a mechanized method to grab the stone slab, eliminating the need for manual transportation of the stone slab, and the present invention absorbs the stone slab through suction cups arranged in a dot matrix, and attaches the stone slab to the pallet, thereby solving the problem that cracked stone slabs cannot be stably adsorbed. At the same time, the front of the stone slab can be placed by the pallet to prevent the stone slab from colliding with other components during transportation and causing damage. The pallet-to-plate transmission device of the present invention can adjust the height and angle, thereby facilitating the import and export of the pallet, and a pallet transfer wheel is provided in the transfer frame on the pallet receiving rack, thereby facilitating the transfer of the pallet to a suitable position.

Description

Technical Field

[0001] The invention relates to the technical field of stone slab transportation, in particular to a method for grabbing rough stone slabs with a pallet. Background Art

[0002] Natural stone raw materials are naturally formed, and after being cut into large slabs, there will be more or less cracks and tiny holes. Therefore, more than 90% of natural stones need to be covered with fiberglass mesh and glue on the back for reinforcement before surface treatment (such as filling glue and polishing).

[0003] At present, domestic stone slab processing factories basically use 3-10 manual workers to push the stone slabs cut from the trolley one by one onto a hand-pushed trolley, and then push them to the operation site to dry before applying glue to the back mesh for reinforcement. The above operation method will make the workers' life safety not guaranteed, and the work site also needs to be relatively large, and the efficiency and quality of stone slab processing cannot be guaranteed. Some foreign countries use mechanical suction cups to directly grab the rough slabs from the trolley and put them on the assembly line pallet, but this method is only applicable to slabs without cracks or slabs that are specially thickened when the stone slabs are cut. Because after the suction cup directly grabs the slab, it needs to be flipped so that the suction cup is on the slab surface, and the bottom of the slab is facing down without any support underneath. If there is a slab with cracks on the edge, it will fall off to the ground. Summary of the Invention

[0004] The present invention adopts the following technical solution to solve the above technical problems, a method for grabbing large stone slabs with a pallet, comprising the following steps: S1, placing the stone slabs, stacking the cut stone slabs on a loading trolley, and then moving the loading trolley after the stone slabs are loaded to the position of the gantry suction cup loading and unloading device.

[0005] The gantry suction cup plate loading and unloading device includes a gantry bracket, a gantry walking guide rail is installed on the top of the gantry bracket, and the gantry walking guide rail is connected to a walking guide rail beam that can move in its length direction. Gantry support beams are installed at the front and rear ends of the walking guide rail beam. A pallet plate transmission device is provided on the lower side of the left end of the gantry bracket. The pallet plate transmission device is used to receive empty pallets and export pallets loaded with stone slabs; the pallets are grid-shaped.

[0006] S2. Position the flip suction cup frame. When the loading trolley moves to the lower right side of the gantry bracket, control the pallet-to-plate transmission device to receive the empty pallet, and then control the walking guide beam to move to the position of the pallet-to-plate transmission device, so that the flip suction cup frame on the lower side of the walking guide beam is located on the lower side of the pallet-to-plate transmission device.

[0007] The gantry support beam is a hollow structure, and each gantry support beam is vertically slidably connected with a lifting guide rail. A gantry lifting assembly that controls the two lifting guide rails to perform synchronous lifting movements is installed on the walking guide rail beam, and a flip suction cup frame is connected between the two lifting guide rails; a plurality of adsorption support beams are evenly arranged on the flip suction cup frame along its front and rear directions, and each adsorption support beam is provided with a plurality of suction cups.

[0008] S3. Pallet locking: The gantry lifting assembly drives the two lifting rails to move upward synchronously, so that the suction cup passes through the grid-shaped pallet, and then locks the pallet by adsorbing the support beam.

[0009] S4. Stone slab adsorption: Control the walking guide rail beam to drive the lifting guide rail to move to the right. Before the flip suction cup frame on the lifting guide rail contacts the stone slab, control the flip suction cup frame to rotate ninety degrees clockwise so that the suction cup faces the stone slab. Control the suction cup to adsorb the stone slabs stacked on the loading trolley so that the stone slabs are stuck in the pallet.

[0010] S5. Stone slabs are unloaded. The walking guide beam is controlled to move to the position of the pallet-to-plate transmission device, and the pallet is driven to rotate to a horizontal state by flipping the suction cup frame, so that the pallet is placed back on the pallet-to-plate transmission device, ending the locking of the adsorption support beam on the pallet and the adsorption of the stone slab by the suction cup. After that, the walking guide beam is controlled to move to the initial position, and the pallet loaded with stone slabs is unloaded through the pallet-to-plate transmission device.

[0011] Preferably, both sides of the loading trolley are detachably mounted with trolley backing plates for protecting the stone, and the trolley backing plates are in a grid shape.

[0012] Preferably, the flipping suction cup frame is driven by a suction cup flipping motor installed at the lower end of one of the lifting guide rails; the gantry lifting assembly includes a lifting execution motor installed on the walking guide rail beam, and the lifting execution motor is connected to a transmission shaft, and lifting transmission gears are provided at both ends of the transmission shaft, and the lifting transmission gears are engaged with the gantry lifting rack provided on the side of the lifting guide rail.

[0013] Preferably, both ends of the walking guide rail beam are equipped with gantry walking motors, and the output end of the gantry walking motor is equipped with walking wheels, which cooperate with the gantry walking guide rails.

[0014] Preferably, the adsorption support beams at the front and rear ends of the flip suction cup frame are provided with locking cylinders, the output end of the locking cylinder is installed with a cylinder latch, and a hole for the cylinder latch to penetrate is opened on the tray.

[0015] Preferably, the pallet plate transmission device includes a bottom rotating seat located on the lower side of the left end of the gantry bracket, a bottom bracket installed on the upper end of the bottom rotating seat, a pallet lifting assembly installed on the left end of the bottom bracket, and a pallet receiving rack installed on the pallet lifting assembly.

[0016] Preferably, a ring gear is rotatably installed on the bottom of the bottom rotating seat, and a bottom supporting gear is meshed on the outer side of the ring gear. The bottom supporting gear is installed on the output shaft of the bottom rotating support motor, the bottom rotating support motor is locked on the bottom rotating seat, and the ring gear is locked on the ground.

[0017] Preferably, the pallet lifting assembly includes a bottom lifting rack and a lifting slide respectively fixed at the left end of the bottom bracket, a pallet sliding frame fixed at the left end of the pallet receiving frame and slidingly matched with the lifting slide rail, and the rotation of the pallet sliding frame is equipped with a height rotation rod, and both ends of the height rotation rod are provided with a rotating support gear engaged with the bottom lifting rack, the height rotation rod is connected to the output end of the receiving platform lifting motor, and the receiving platform lifting motor is installed on the pallet receiving frame.

[0018] Preferably, a plurality of transfer frames are evenly arranged at the right end of the pallet receiving rack, and the transfer frames are staggered with the adsorption support beams. The transfer frames are U-shaped structures, and pallet conveying wheels are arranged inside the U-shaped structure.

[0019] The beneficial effects of the present invention are: 1. The present invention adopts a mechanized method to grab the stone slabs, eliminating the need for manual transportation of the stone slabs and improving processing efficiency. The present invention absorbs the stone slabs through suction cups arranged in a dot matrix and attaches the stone slabs to the pallet, thereby solving the problem that cracked stone slabs cannot be stably adsorbed. At the same time, the pallet can be used to place the front of the stone slabs to prevent the stone slabs from colliding with other components during transportation and causing damage.

[0020] 2. The present invention adopts a staggered arrangement of adsorption support beams and transfer frames, so that the suction cups on the adsorption support beams can pass through the grid-shaped pallet, and the cylinder pins on the adsorption support beams can be locked in the preset holes on the pallet, so that the pallet can be firmly locked on the adsorption support beams. The stone slabs are then adsorbed on the pallet through the suction cups, thereby facilitating the safe transfer of the stone slabs.

[0021] 3. The pallet-to-plate transmission device of the present invention can be adjusted in height and angle, thereby facilitating the import and export of pallets, and pallet transmission wheels are provided in the transfer frame on the pallet receiving rack, thereby facilitating the transmission of pallets to a suitable position.

[0022] 4. The trolley support plates on both sides of the loading trolley of the present invention are used to protect the stone slabs during transportation. When the stone slabs are transferred to the gantry suction cup loading and unloading device, the trolley support plate on the left side is removed, thereby not affecting the grabbing of the stone slabs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] Figure 1 It is a flow chart of the stone slab grabbing method of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the present invention.

[0026] Figure 3 It is a side structural schematic diagram of the present invention.

[0027] Figure 4 This invention Figure 3 A partial enlarged view of point A in the middle.

[0028] Figure 5 It is a schematic diagram of the structure between the pallet connecting plate transmission device, the flip suction cup frame and the lifting guide rail according to the present invention when viewed from above.

[0029] Figure 6 It is a front view structural diagram of the pallet connecting plate transmission device, the flip suction cup frame and the lifting guide rail of the present invention.

[0030] Figure 7 It is a side view structural diagram of the pallet connecting plate transmission device, the flip suction cup frame and the lifting guide rail of the present invention.

[0031] Figure 8 It is a schematic top view of the structure between the pallet connecting plate transmission device, the flip suction cup frame and the lifting guide rail of the present invention.

[0032] Figure 9 This invention Figure 8 A partial enlarged view of point B in the middle.

[0033] Figure: 1. Loading trolley; 11. Carriage support plate; 2. Stone plate; 3. Gantry bracket; 31. Gantry travel guide rail; 32. Travel guide rail beam; 321. Gantry travel motor; 322. Travel wheel; 8. Gantry support beam; 7. Lifting guide rail; 71. Gantry lifting rack; 9. Gantry lifting assembly; 91. Lifting actuator motor; 92. Drive shaft; 93. Lifting transmission gear; 6. Flip suction cup frame; 61. Adsorption support beam; 62. Suction cup; 63. Suction cup flip Motor; 64, locking cylinder; 65, cylinder latch; 4, bottom rotating seat; 41, bottom bracket; 42, pallet lifting assembly; 43, ring gear; 44, bottom support gear; 45, bottom rotating support motor; 46, bottom lifting rack; 47, lifting slide rail; 48, pallet sliding frame; 49, height rotation rod; 410, rotating support gear; 411, receiving table lifting motor; 5, pallet receiving frame; 51, transfer frame; 52, pallet conveying wheel. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See Figure 1-Figure 2 and Figure 9 A method for grabbing large rough stone slabs with a pallet includes the following steps: S1, placing the stone slabs, stacking the cut stone slabs 2 on the loading trolley 1, and then moving the loading trolley 1 after the stone slabs 2 are loaded to the position of the gantry suction cup loading and unloading device.

[0036] See Figure 1 , the two sides of the loading trolley 1 are detachably installed with a trolley support plate 11 for protecting the stone. The trolley support plate 11 is grid-shaped. After the loading of the loading trolley 1 is completed and before it is transferred to the gantry suction cup loading and unloading plate device, the trolley support plate 11 is installed on both sides of the loading trolley 1 to protect the stone slab 2 during transportation. When the stone slab 2 is transferred to the gantry suction cup loading and unloading plate device, the trolley support plate 11 on the left side is removed, which does not affect the grabbing of the stone slab 2.

[0037] See Figure 2-Figure 3 The gantry suction cup loading and unloading plate device includes a gantry bracket 3, a gantry walking guide rail 31 is installed on the top of the gantry bracket 3, and the gantry walking guide rail 31 is connected with a walking guide rail beam 32 that can move in its length direction. In the initial state, the walking guide rail beam 32 is located in the middle of the gantry walking guide rail 31, and both ends of the walking guide rail beam 32 are installed with a gantry walking motor 321. The output end of the gantry walking motor 321 is installed with a walking wheel 322, and the walking wheel 322 cooperates with the gantry walking guide rail 31. When the walking guide beam 32 needs to move, the gantry walking motor 321 is controlled to rotate, and then the walking guide rail beam 32 is moved to the appropriate position under the cooperation of the walking wheel 322 and the walking rack.

[0038] See Figure 1 The front and rear ends of the walking guide beam 32 are both equipped with gantry support beams 8, and the lower left end of the gantry bracket 3 is provided with a pallet-to-plate transmission device, which is used to receive empty pallets and export the pallets loaded with stone slabs 2; the pallets are in a grid shape.

[0039] S2. Position the flip suction cup frame. When the loading trolley 1 moves to the lower right end of the gantry bracket 3, the empty pallet is transferred to the pallet plate transmission device through the external pallet conveyor belt, and then the gantry travel motor 321 is controlled to rotate, and the travel guide beam 32 can move to the position of the pallet plate transmission device, and make the flip suction cup frame 6 on the lower side of the travel guide beam 32 located on the lower side of the pallet plate transmission device.

[0040] See Figure 1-Figure 3 The gantry support beam 8 is a hollow structure, and each gantry support beam 8 is vertically slidably connected with a lifting guide rail 7. A gantry lifting assembly 9 for controlling the two lifting guide rails 7 to perform synchronous lifting movements is installed on the walking guide rail beam 32, and a flip suction cup frame 6 is connected between the two lifting guide rails 7; the gantry lifting assembly 9 includes a lifting execution motor 91 installed on the walking guide rail beam 32, and a transmission shaft 92 is connected to the lifting execution motor 91. Both ends of the transmission shaft 92 are provided with lifting transmission gears 93, and the lifting transmission gear 93 is engaged with the gantry lifting rack 71 provided on the side of the lifting guide rail 7; by controlling the lifting execution motor 91 to rotate, the lifting transmission gear 93 cooperates with the gantry lifting rack 71 to drive the lifting guide rail 7 to adjust the height, and then the flip suction cup frame 6 is moved to a suitable height.

[0041] See Figure 5-Figure 6 The flipping suction cup frame 6 is driven by a suction cup flipping motor 63 installed at the lower end of one of the lifting guide rails 7; a plurality of adsorption support beams 61 are evenly arranged on the flipping suction cup frame 6 along its front and rear directions, and each adsorption support beam 61 is provided with a plurality of suction cups 62. The suction cups 62 on the adsorption support beams 61 can use a multi-point adsorption method to adsorb the stone slab 2, thereby increasing the safety of the adsorption of the stone slab 2, and thus can stably adsorb the stone slab 2 with cracks or protrusions.

[0042] S3, the pallet is locked. The two lifting guide rails 7 are driven to move upward synchronously by the gantry lifting assembly 9, so that the suction cup 62 passes through the grid-shaped pallet, and then the pallet is locked by adsorbing the support beam 61.

[0043] See Figure 7-Figure 8 , locking cylinders 64 are provided on the adsorption support beams 61 at the front and rear ends of the flip suction cup frame 6, and a cylinder latch 65 is installed at the output end of the locking cylinder 64. A hole for the cylinder latch 65 to penetrate is provided on the pallet. By extending the locking cylinder 64, the cylinder latch 65 is inserted into the hole provided on the pallet, and then the flip suction cup frame 6 can lock the pallet, and no relative displacement will occur between the two during the transportation of the stone slab 2.

[0044] See Figure 5The pallet receiving and plate transmission device includes a bottom rotating seat 4 located on the lower side of the left end of the gantry bracket 3, a bottom bracket 41 installed on the upper end of the bottom rotating seat 4, a pallet lifting assembly 42 installed on the left end of the bottom bracket 41, and a pallet receiving rack 5 installed on the pallet lifting assembly 42. The pallet receiving rack 5 is used to place the pallet. The height of the pallet receiving rack 5 can be adjusted by the pallet lifting assembly 42. The bottom rotating seat 4 is used to rotate the pallet receiving rack 5 so that the pallet faces the external pallet conveyor belt, which is convenient for receiving empty pallets and exporting pallets loaded with stone.

[0045] See Figure 4 The bottom rotation of the bottom rotating seat 4 is installed with a ring gear 43, and the outer side of the ring gear 43 is meshed with a bottom support gear 44. The bottom support gear 44 is installed on the output shaft of the bottom rotating support motor 45. The bottom rotating support motor 45 is locked on the bottom rotating seat 4, and the ring gear 43 is locked on the ground. The rotation of the bottom rotating support motor 45 can drive the bottom rotating seat 4 to rotate, and then drive the tray receiving rack 5 to rotate synchronously.

[0046] See Figure 5 The pallet lifting assembly 42 includes a bottom lifting rack 46 and a lifting slide 47 respectively fixed to the left end of the bottom bracket 41, and a pallet sliding frame 48 fixed to the left end of the pallet receiving frame 5 and slidingly matched with the lifting slide 47. The rotation of the pallet sliding frame 48 is installed with a height rotation rod 49, and both ends of the height rotation rod 49 are provided with a rotating support gear 410 that meshes with the bottom lifting rack 46. The height rotation rod 49 is connected to the output end of the receiving platform lifting motor 411, and the receiving platform lifting motor 411 is installed on the pallet receiving frame 5. Through the rotation of the receiving platform lifting motor 411, the rotating support gear 410 cooperates with the bottom lifting rack 46 to drive the pallet sliding frame 48 to adjust the height.

[0047] Continue reading Figure 5 A plurality of transfer frames 51 are evenly arranged at the right end of the pallet receiving rack 5. The transfer frames 51 are staggered with the adsorption support beams 61. The transfer frames 51 are U-shaped structures, and a pallet conveying wheel 52 is provided inside the U-shaped structure. The staggered arrangement of the transfer frames 51 and the adsorption support beams 61 enables the adsorption support beams 61 to move between two adjacent transfer frames 51, and then the suction cups 62 on the adsorption support beams 61 can pass through the pallet, so that the suction cups 62 can adsorb and grab the stone slabs 2.

[0048] S4, stone slab adsorption, control the walking guide rail beam 32 to drive the lifting guide rail 7 to move to the right, before the flip suction cup frame 6 on the lifting guide rail 7 contacts the stone slab 2, the suction cup flip motor 63 controls the flip suction cup frame 6 to rotate ninety degrees clockwise, so that the suction cup 62 is facing the stone slab 2, and continue to control the walking guide rail beam 32 to move to the right so that the suction cup 62 is controlled to adsorb the stone slab 2 stacked on the loading trolley 1. At this time, the stone slab 2 is stuck in the pallet.

[0049] S5, the stone slab is unloaded, the walking guide beam 32 is controlled to move to the left to the position of the pallet receiving rack 5, and during the movement of the walking guide beam 32, the flip suction cup rack 6 is controlled to drive the pallet to rotate to a horizontal state, so that the pallet is replaced on the pallet receiving rack 5, ending the locking of the pallet by the adsorption support beam 61 and the adsorption of the stone slab 2 by the suction cup 62, and then the walking guide beam 32 is controlled to move to the initial position, and the pallet receiving rack 5 is driven to move to a suitable height through the pallet lifting assembly 42, thereby facilitating the unloading of the pallet loaded with the stone slab 2.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for grabbing rough stone slabs with a tray, characterized in that: The steps include: S1, placing the stone slabs, stacking the cut stone slabs (2) on the loading trolley (1), and then moving the loading trolley (1) with the stone slabs (2) loaded to the position of the gantry suction cup loading and unloading device; The gantry suction cup loading and unloading plate device comprises a gantry bracket (3), a gantry walking guide rail (31) is installed on the top of the gantry bracket (3), a walking guide rail beam (32) capable of moving in the length direction of the gantry walking guide rail (31) is connected to the gantry walking guide rail (31), and gantry support beams (8) are installed at the front and rear ends of the walking guide rail beam (32). A pallet connecting plate transmission device is provided on the lower side of the left end of the gantry bracket (3), and the pallet connecting plate transmission device is used to receive empty pallets and export pallets loaded with stone plates (2); the pallets are in a grid shape; S2, the flip suction cup frame is positioned. When the loading trolley (1) moves to the lower right side of the gantry support (3), the pallet-to-plate transmission device is controlled to receive the empty pallet, and then the walking guide beam (32) is controlled to move to the position of the pallet-to-plate transmission device so that the flip suction cup frame (6) on the lower side of the walking guide beam (32) is located on the lower side of the pallet-to-plate transmission device; The gantry support beam (8) is a hollow structure, and each gantry support beam (8) is vertically slidably connected to a lifting guide rail (7), a gantry lifting assembly (9) for controlling the two lifting guide rails (7) to perform synchronous lifting movements is installed on the walking guide rail beam (32), and a flip suction cup frame (6) is connected between the two lifting guide rails (7); a plurality of adsorption support beams (61) are evenly arranged on the flip suction cup frame (6) along its front and rear directions, and each adsorption support beam (61) is provided with a plurality of suction cups (62); S3, the pallet is locked, and the two lifting guide rails (7) are driven to move upward synchronously by the gantry lifting assembly (9), so that the suction cup (62) passes through the grid-shaped pallet, and then the pallet is locked by adsorbing the support beam (61); S4, stone slab adsorption, control the walking guide rail beam (32) to drive the lifting guide rail (7) to move to the right, control the flip suction cup frame (6) on the lifting guide rail (7) to rotate ninety degrees clockwise before it contacts the stone slab (2), so that the suction cup (62) is facing the stone slab (2), and control the suction cup (62) to adsorb the stone slab (2) stacked on the loading trolley (1), so that the stone slab (2) is stuck in the tray; S5, the stone slab is unloaded, the walking guide beam (32) is controlled to move to the position of the pallet plate transmission device, and the pallet is driven to rotate to a horizontal state by flipping the suction cup frame (6), so that the pallet is re-placed on the pallet plate transmission device, and the locking of the pallet by the adsorption support beam (61) and the adsorption of the stone slab (2) by the suction cup (62) are ended, and then the walking guide beam (32) is controlled to move to the initial position, and the pallet loaded with the stone slab (2) is unloaded through the pallet plate transmission device; The pallet plate transmission device comprises a bottom rotating seat (4) located at the lower side of the left end of the gantry support (3), a bottom support (41) installed at the upper end of the bottom rotating seat (4), a pallet lifting assembly (42) installed at the left end of the bottom support (41), and a pallet receiving frame (5) installed on the pallet lifting assembly (42); A plurality of transfer frames (51) are evenly arranged at the right end of the pallet receiving frame (5), and the transfer frames (51) and the adsorption support beams (61) are arranged in a staggered manner. The transfer frames (51) are U-shaped structures, and pallet transfer wheels (52) are arranged in the U-shaped structure.

2. The method for grabbing rough stone slabs with a pallet according to claim 1, characterized in that: Both sides of the loading trolley (1) are detachably mounted with trolley backing plates (11) for protecting the stone materials, and the trolley backing plates (11) are in a grid shape.

3. The method for grabbing rough stone slabs with a pallet according to claim 1, characterized in that: The flip suction cup frame (6) is driven by a suction cup flip motor (63) installed at the lower end of one of the lifting guide rails (7); the gantry lifting assembly (9) includes a lifting execution motor (91) installed on the walking guide rail beam (32), the lifting execution motor (91) is connected to a transmission shaft (92), both ends of the transmission shaft (92) are provided with lifting transmission gears (93), and the lifting transmission gears (93) are meshed with the gantry lifting rack (71) provided on the side of the lifting guide rail (7).

4. The method for grabbing rough stone slabs with a pallet according to claim 1, characterized in that: Both ends of the walking guide rail beam (32) are equipped with a gantry walking motor (321), and the output end of the gantry walking motor (321) is equipped with a walking wheel (322), and the walking wheel (322) is matched with the gantry walking guide rail (31).

5. The method for grabbing rough stone slabs with a pallet according to claim 1, characterized in that: The adsorption support beams (61) at the front and rear ends of the flip suction cup frame (6) are both provided with locking cylinders (64), the output end of the locking cylinder (64) is installed with a cylinder latch (65), and a hole for the cylinder latch (65) to penetrate is opened on the tray.

6. The method for grabbing rough stone slabs with a pallet according to claim 1, characterized in that: A ring gear (43) is rotatably mounted on the bottom of the bottom rotating seat (4); a bottom supporting gear (44) is meshedly mounted on the outer side of the ring gear (43); the bottom supporting gear (44) is mounted on the output shaft of a bottom rotating support motor (45); the bottom rotating support motor (45) is locked on the bottom rotating seat (4); and the ring gear (43) is locked on the ground.

7. The method for grabbing rough stone slabs with a pallet according to claim 1, characterized in that: The tray lifting assembly (42) comprises a bottom lifting rack (46) and a lifting slide rail (47) respectively fixed to the left end of the bottom bracket (41), a tray sliding frame (48) fixed to the left end of the tray receiving frame (5) and slidingly matched with the lifting slide rail (47), a height rotating rod (49) is installed for rotation of the tray sliding frame (48), and both ends of the height rotating rod (49) are provided with a rotating support gear (410) meshing with the bottom lifting rack (46), and the height rotating rod (49) is connected to the output end of the receiving platform lifting motor (411), and the receiving platform lifting motor (411) is installed on the tray receiving frame (5).

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