Stereoscopic storage stacking crane

Abstract

The invention discloses a three-dimensional storage stacking crane, and particularly relates to the technical field of cranes, the three-dimensional storage stacking crane comprises a crane bridge, a bearing frame piece and a tray, a forking mechanism is slidably arranged on the bottom wall of an inner cavity of the bearing frame piece, an air pressure clamping mechanism is installed at the bottom end of the bearing frame piece, and a pushing assembly is installed in the middle of the top end of the bearing frame piece. According to the three-dimensional storage stacking crane, workpieces are inserted and taken by arranging the forking mechanism, the workpieces are inserted and taken into the inner cavity of the bearing frame piece through the forking mechanism, and the workpieces are clamped through the air pressure clamping mechanism; according to the device, the situation that a workpiece on the bearing frame piece shakes due to factors such as inertia force generated in the process that the crane bridge drives the bearing frame piece to move is avoided, the pushing assembly is arranged to limit the tray when the workpiece is loaded, in this way, the workpiece can be directly loaded in the workpiece loading process, and the tray is left due to limiting to be independently recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a three-dimensional storage stacking crane. Background Art

[0002] With the rapid economic development and the acceleration of the globalization process, the scale of the logistics industry continues to expand, and the requirements for warehousing efficiency and space utilization are becoming higher and higher. Traditional warehousing methods often rely on manual handling and stacking of goods, which is not only inefficient, but also labor-intensive and prone to errors. In order to meet the growing logistics needs, warehouse stacking cranes came into being. Warehouse stacking cranes, also known as stacking cranes, play a vital role in modern logistics and warehousing.

[0003] The Chinese patent with the authorization announcement number CN219156282U discloses a crane hoist device and a crane. The crane hoist device is installed on the crane lifting mechanism. The crane hoist device includes a bracket assembly, a pulley, a hoist and an industrial camera. The pulley rotates around the Y axis and is installed on the top of the bracket assembly. The pulley is connected to the crane lifting mechanism. The hoist is installed at the bottom of the bracket assembly and extends along the X axis. The hoist is used to insert the workpiece. The industrial camera is set at the bottom of the bracket assembly and located on one side of the hoist. The industrial camera is used to identify the position of the hoist relative to the workpiece. The crane hoist device using this device can improve the convenience of debugging and reduce costs.

[0004] When the device is lifting the workpiece, the workpiece cannot be stably limited on the hoist. When the hoist drives the workpiece to move, the workpiece will shake obviously on the hoist due to factors such as braking or inertia generated during the movement. This shaking will not only affect the stability and safety of the lifting process, but may also cause the workpiece to collide with surrounding objects, causing damage to the workpiece or even causing safety accidents. At the same time, the shaking of the workpiece will also bring great psychological pressure to the operator, increase the difficulty and risk of operation. In addition, frequent shaking may also cause certain wear and damage to the hoist itself, reducing the service life and reliability of the hoist. Summary of the invention

[0005] The main purpose of the present invention is to provide a three-dimensional storage stacking crane, which can effectively solve the above-mentioned problems.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A three-dimensional storage stacking crane comprises a crane bridge, a bearing frame and a pallet, wherein the back end of the bearing frame is fixedly connected to the output end of the crane bridge, a fork holding mechanism is slidably provided on the bottom wall of the inner cavity of the bearing frame, the pallet is arranged on the fork holding mechanism, clamping plates are symmetrically installed on the left and right sides of the inner cavity of the bearing frame, a pneumatic clamping mechanism is installed at the bottom end of the bearing frame, a constant pressure mechanism is arranged on the pneumatic clamping mechanism, and a pushing assembly is installed at the middle part of the top end of the bearing frame.

[0008] Preferably, the fork holding mechanism includes an electric hydraulic cylinder, a slide groove, two articulated seats and two forks, the slide groove is opened in the middle of the bottom end of the supporting frame, a sliding seat is slidably installed on the inner surface of the slide groove, the two articulated seats are respectively fixedly installed between the rear side of the middle of the bottom end of the supporting frame and the bottom end of the sliding seat, and the head and tail ends of the electric hydraulic cylinder are respectively rotatably connected to the two articulated seats.

[0009] Preferably, a fixed seat is fixedly installed on the top of the sliding seat, and a plurality of mounting grooves are equidistantly opened at the front end of the fixed seat. The two forks are respectively inserted into the inner cavities of the plurality of mounting grooves and are connected by bolt threads, and the pallet is held by the two forks.

[0010] Preferably, two movable grooves are respectively provided on the front sides of the top ends of the two forks, two limit plates are respectively installed in the inner cavities of the two movable grooves, and two metal springs that abut against the two limit plates are respectively installed in the inner cavities of the two movable grooves.

[0011] Preferably, the pneumatic clamping mechanism includes two cylinders and two air pressure cylinders of an enclosure, the enclosure is fixedly mounted at the edge of the bottom end of the supporting frame, the two cylinders are respectively fixedly mounted on both sides of the bottom end of the supporting frame away from the middle thereof, two pistons are respectively slidably mounted in the inner cavities of the two cylinders, the two pistons are fixedly connected to the slide groove one by two symmetrical connecting rods, and the front ends of the two pistons are respectively provided with two one-way valves connected to the inner cavities of the two cylinders.

[0012] Preferably, the two pneumatic cylinders are respectively fixedly installed on the left and right ends of the supporting frame, the inner cavities of the two pneumatic cylinders are connected with the inner cavities of the two cylinders through two air pipes, the end surfaces of the two pneumatic cylinders close to each other are provided with sliding holes connected with their inner cavities, two sliding rods are respectively slidably installed in the inner cavities of the two connecting rods, and the end surfaces of the two sliding rods close to each other are respectively fixedly connected to the two clamping plates.

[0013] Preferably, the constant pressure mechanism includes two tube bodies and two recoil springs, the two tube bodies are respectively fixedly mounted on the end surfaces of the two air pressure cylinders that are away from each other, and two air inlet holes connected to the inner cavities of the two air pressure cylinders are respectively opened on one end of the two tube bodies extending to the inner cavities of the two air pressure cylinders, and two pressure relief holes connected to the inner cavities of the two air pressure cylinders are respectively opened on the outer surfaces of the two tube bodies, and two pressing plates are respectively placed on the bottom walls of the inner cavities of the two tube bodies, and two threaded holes connected to the inner cavities of the two tube bodies are respectively opened on the end surfaces of the two tube bodies that are away from each other, and two threaded rods are respectively threadedly installed in the inner cavities of the two threaded holes, and the two recoil springs are respectively placed in the inner cavities of the two tube bodies, and the head and tail ends of the two recoil springs are respectively held between the two threaded rods and the two pressing plates, and two twisting rings are respectively fixedly installed on the tops of the two threaded rods.

[0014] Preferably, the pushing assembly includes a servo motor, a rotating ring block and a second slide groove, the servo motor is fixedly mounted on the rear side of the middle part of the top end of the supporting frame, the rotating ring block is fixedly mounted on the front side of the middle part of the top end of the supporting frame, the output shaft of the servo motor is fixedly connected to the screw rod through a coupling, the screw rod is rotatably mounted on the rotating ring block at one end away from the servo motor, the second slide groove is opened in the middle part of the top end of the supporting frame, a nut slider matching the second slide groove is threadedly mounted on the outer surface of the screw rod, and a pushing plate is fixedly mounted on one end of the nut slider extending into the inner cavity of the supporting frame through the second slide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, a fork holding mechanism is provided to insert the workpiece, and the fork holding mechanism inserts the workpiece into the inner cavity of the bearing frame, and the workpiece is clamped by a pneumatic clamping mechanism to avoid the inertial force generated during the movement of the bearing frame driven by the crane to erect the bridge, which may cause the workpiece on the bearing frame to shake.

[0017] 2. In the present invention, a constant pressure mechanism is provided to prevent the pneumatic clamping mechanism from damaging the workpiece due to excessive clamping force when clamping the workpiece.

[0018] 3. In actual use, the present invention sets a pushing component to limit the position of the pallet when loading the workpieces, so that the workpieces can be directly loaded into the vehicle during the loading process, and the pallet will be left behind for separate recycling due to the limitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure between the load-bearing frame and the pneumatic clamping mechanism in the present invention;

[0021] Figure 3 It is a schematic diagram of the bottom structure of the bearing frame in the present invention;

[0022] Figure 4 It is a schematic diagram of the connection structure between the fixing seat and the tray in the present invention;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the air pressure cylinder and the constant pressure assembly in the present invention;

[0024] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the node at A in the middle;

[0025] Figure 7 It is a schematic diagram of the top structure of the bearing frame in the present invention.

[0026] In the figure: 1, crane bridge; 2, bearing frame; 4, fork holding mechanism; 41, electric hydraulic cylinder; 42, hinged seat; 43, sliding seat; 44, fixed seat; 451, mounting slot; 46, fork; 461, movable slot; 462, limit plate; 463, metal spring; 47, slide slot 1; 5, pneumatic clamping mechanism; 51, connecting rod; 52, cylinder; 53, piston; 531, one-way valve; 532, air pipe; 54, air Pressure cylinder; 541, sliding hole; 55, sliding rod; 56, enclosure; 6, constant pressure mechanism; 61, tube body; 611, air inlet; 612, threaded hole; 613, pressure relief hole; 62, threaded rod; 621, screw ring; 63, pressing piece; 64, return spring; 7, clamping plate; 8, tray; 9, pushing assembly; 91, servo motor; 92, rotating ring block; 93, screw rod; 94, nut slider; 95, pushing plate; 96, slide groove II. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] Embodiment 1

[0029] like Figure 1-Figure 4 As shown, a three-dimensional storage stacking crane comprises a crane bridge 1, a bearing frame 2 and a pallet 8, the back end of the bearing frame 2 is fixedly connected to the output end of the crane bridge 1, a fork holding mechanism 4 is slidably arranged on the bottom wall of the inner cavity of the bearing frame 2, the pallet 8 is arranged on the fork holding mechanism 4, clamping plates 7 are symmetrically arranged on the left and right sides of the inner cavity of the bearing frame 2, a pneumatic clamping mechanism 5 is arranged at the bottom end of the bearing frame 2, a constant pressure mechanism 6 is arranged on the pneumatic clamping mechanism 5, and a pushing component 9 is arranged at the middle of the top end of the bearing frame 2;

[0030] The fork holding mechanism 4 is provided to insert the workpiece, and the fork holding mechanism 4 inserts the workpiece into the inner cavity of the supporting frame 2, and the workpiece is clamped by the pneumatic clamping mechanism 5 to avoid the workpiece on the supporting frame 2 from shaking due to factors such as the inertial force generated during the movement of the supporting frame 2 driven by the crane bridge 1. The constant pressure mechanism 6 is provided to avoid the pneumatic clamping mechanism 5 from clamping the workpiece and causing the workpiece to be damaged due to excessive clamping force, and the pushing component 9 is provided to limit the pallet 8 when the workpiece is loaded. In this way, the workpiece can be directly loaded during the loading process, and the pallet 8 will be left behind for separate recovery due to the limitation.

[0031] Specifically, the fork holding mechanism 4 includes an electric hydraulic cylinder 41, a slide groove 47, two articulated seats 42 and two forks 46. The slide groove 47 is opened in the middle of the bottom end of the supporting frame 2. A sliding seat 43 is slidably installed on the inner surface of the slide groove 47. The two articulated seats 42 are respectively fixedly installed between the rear side of the middle part of the bottom end of the supporting frame 2 and the bottom end of the sliding seat 43. The head and tail ends of the electric hydraulic cylinder 41 are respectively connected to the two articulated seats 42 for rotation.

[0032] The fork holding mechanism 4 includes an electric hydraulic cylinder 41, a slide groove 47, two articulated seats 42 and two forks 46. The slide groove 47 is provided in the middle of the bottom end of the bearing frame 2. A sliding seat 43 is slidably mounted on the inner surface of the slide groove 47. The two articulated seats 42 are respectively fixedly mounted between the rear side of the middle of the bottom end of the bearing frame 2 and the bottom end of the sliding seat 43. The head and tail ends of the electric hydraulic cylinder 41 are respectively connected to the two articulated seats 42 for rotation.

[0033] A fixing seat 44 is fixedly mounted on the top of the sliding seat 43. A plurality of mounting grooves 451 are equidistantly formed at the front end of the fixing seat 44. Two forks 46 are respectively inserted into the inner cavities of the plurality of mounting grooves 451 and are connected by bolt threads. The pallet 8 is inserted and held by the two forks 46.

[0034] The two forks 46 can be inserted into the inner cavities of the multiple installation grooves 451 at the front end of the fixed seat 44 at will, and the two forks 46 are installed in the inner cavities of the installation grooves 451 by bolts. In actual use, the distance between the two forks 46 can be adjusted according to the size of the pallet 8. The electric hydraulic cylinder 41 is started, and the electric hydraulic cylinder 41 pushes the sliding seat 43 to slide horizontally along the slide groove 47. In this way, the fixed seat 44 located at the top of the sliding seat 43 will drive the two forks 46 forward to fork the pallet 8. The two forks 46 are pulled backward by the electric hydraulic cylinder 41 to collect the workpiece on top of them together with the pallet 8 into the inner cavity of the supporting frame 2.

[0035] Specifically, the pneumatic clamping mechanism 5 includes a baffle 56, two cylinders 52 and two pneumatic cylinders 54. The baffle 56 is fixedly mounted at the bottom edge of the bearing frame 2. The two cylinders 52 are respectively fixedly mounted on the two sides of the bottom of the bearing frame 2 away from the middle thereof. Two pistons 53 are respectively slidably mounted in the inner cavities of the two cylinders 52. The two pistons 53 are respectively fixedly connected to the slide groove 47 by two symmetrical connecting rods 51. Two one-way valves 531 communicating with the inner cavities of the two cylinders 52 are respectively mounted at the front ends of the two pistons 53.

[0036] Two air cylinders 54 are fixedly mounted on the left and right ends of the bearing frame 2, respectively. The inner cavities of the two air cylinders 54 are connected to the inner cavities of the two cylinders 52 through two air pipes 532, respectively. The end surfaces of the two air cylinders 54 close to each other are provided with sliding holes 541 connected to their inner cavities. Two sliding rods 55 are slidably mounted in the inner cavities of the two connecting rods 51, respectively. The end surfaces of the two sliding rods 55 close to each other are fixedly connected to the two clamping plates 7, respectively.

[0037] During the movement of the sliding seat 43, the two connecting rods 51 respectively drive the pistons 53 in the inner cavities of the two cylinders 52 to perform reciprocating motion. When the fork holding mechanism 4 inserts the workpiece into the inner cavity of the supporting frame 2, the sliding seat 43 slides backward. In this way, during the backward movement of the sliding seat 43, the two connecting rods 51 drive the two pistons 53 to push the air in the two cylinders 52 into the inner cavities of the two air pressure cylinders 54 respectively. As the air pressure in the two air pressure cylinders 54 increases, the two sliding rods 55 are pushed closer to each other. The two sliding rods 55 are fixedly connected to the two clamping plates 7. In this way, the sliding rod 55 drives the two clamping plates 7 closer to each other during the sliding process, and then clamps the workpiece in the inner cavity of the supporting frame 2, so as to avoid the workpiece on the supporting frame 2 from shaking due to factors such as the inertial force generated during the movement of the supporting frame 2 driven by the crane bridge 1.

[0038] Furthermore, since the sizes of the workpieces are inconsistent, a constant pressure mechanism 6 is provided to prevent the pneumatic clamping mechanism 5 from pushing the two clamping plates 7 and causing the two clamping plates 7 to damage the workpieces due to excessive air pressure.

[0039] like Figure 5 and Figure 6As shown, the constant pressure mechanism 6 includes two tube bodies 61 and two return springs 64. The two tube bodies 61 are respectively fixedly mounted on the end surfaces of the two air pressure cylinders 54 that are away from each other. Two air inlet holes 611 connected to the inner cavities of the two air pressure cylinders 54 are respectively opened on one end of the two tube bodies 61 extending into the inner cavities of the two air pressure cylinders 54. Two pressure relief holes 613 connected to the inner cavities are respectively opened on the outer surfaces of the two tube bodies 61. Two pressing plates 63 are respectively placed on the bottom walls of the inner cavities of the two tube bodies 61. Two threaded holes 612 connected to the inner cavities are respectively opened on the end surfaces of the two tube bodies 61 that are away from each other. Two threaded rods 62 are respectively threadedly installed in the inner cavities of the two threaded holes 612. The two return springs 64 are respectively placed in the inner cavities of the two tube bodies 61, and the head and tail ends of the two return springs 64 are respectively held between the two threaded rods 62 and the two press plates 63. Two twisting rings 621 are respectively fixedly installed on the tops of the two threaded rods 62.

[0040] The head and tail ends of the return spring 64 are respectively held between the threaded rod 62 and the pressing plate 63, so that the pressing plate 63 blocks the air inlet 611 through the tension of the return spring 64. When the air pressure in the air cylinder 54 is too high, the air pressure pushes the pressing plate 63 through the air inlet 611, and the pressing plate 63 releases the blockage of the air inlet 611. At this time, the high-pressure gas entering the inner cavity of the tube body 61 through the air inlet 611 is discharged outward through the pressure relief hole 613, thereby reducing the air pressure in the air cylinder 54 to prevent the high pressure in the air cylinder 54 from pushing the clamping plate 7 through the sliding rod 55 to crush the workpiece;

[0041] The screw ring 621 is turned to raise the threaded rod 62 threadedly installed on the inner cavity of the threaded hole 612. When the threaded rod 62 descends, it compresses the return spring 64. The return spring 64 is deformed under pressure, so that its elastic force increases with the extrusion deformation. In this way, the pressure of the return spring 64 on the pressing plate 63 also increases. The screw ring 621 is turned in the opposite direction to raise the threaded rod 62. In this way, the pressure on the return spring 64 becomes smaller, thereby reducing the pressure on the pressing plate 63. It can be seen that turning the threaded rod 62 can change the pressure of the return spring 64 on the pressing plate 63, thereby adjusting the pressure in the air pressure cylinder 54.

[0042] Embodiment 2

[0043] During use, the warehouse stacking crane not only needs to place the workpieces on the shelves, but also needs to lift the workpieces onto the truck when shipping. During this process, the pallet 8 used to place the workpieces needs to be recovered, otherwise the pallet 8 cannot be removed again after the workpieces are stacked and loaded onto the truck;

[0044] like Figure 4 and Figure 7As shown, the pushing assembly 9 includes a servo motor 91, a rotating ring block 92 and a second slide groove 96. The servo motor 91 is fixedly mounted on the rear side of the middle part of the top of the carrying frame 2, and the rotating ring block 92 is fixedly mounted on the front side of the middle part of the top of the carrying frame 2. The output shaft of the servo motor 91 is fixedly connected to a screw rod 93 through a coupling. One end of the screw rod 93 away from the servo motor 91 is rotatably mounted on the rotating ring block 92. The second slide groove 96 is provided in the middle part of the top of the carrying frame 2. A nut slider 94 matching the second slide groove 96 is threadedly mounted on the outer surface of the screw rod 93. One end of the nut slider 94 extending into the inner cavity of the carrying frame 2 through the second slide groove 96 is fixedly mounted with a pushing plate 95.

[0045] Two movable grooves 461 are respectively provided at the front sides of the top ends of the two forks 46. Two limit plates 462 are respectively installed in the inner cavities of the two movable grooves 461. Two metal springs 463 are respectively installed in the inner cavities of the two movable grooves 461 to abut against the two limit plates 462.

[0046] After the fork holding mechanism 4 inserts the workpiece into the inner cavity of the carrying frame 2, the two limit plates 462 respectively stand vertically on the two forks 46 to limit the pallet 8 through the tension of the two metal springs 463. When the workpiece needs to be loaded, the servo motor 91 is started, and the servo motor 91 drives the screw rod 93 to rotate, so that the nut slider 94 threadedly installed on the screw rod 93 drives the push plate 95 to slide horizontally along the slide groove 96. When the push plate 95 is driven to slide forward to the front port of the carrying frame 2, the fork holding mechanism 4 is started at this time, and the fork holding mechanism 4 drags the pallet 8 to slide into the inner cavity of the carrying frame 2, and the workpiece on the pallet 8 is blocked by the push plate 95, so that the workpiece is withdrawn from the pallet 8, so that the pallet 8 can be recovered after the workpiece is loaded.

[0047] It is worth mentioning here that there are two limit plates 462. The two limit plates 462 are rotatably installed in the front part of the inner cavity of the movable groove 461. The two limit plates 462 always maintain a standing state without being subjected to external forces through the tension of the two metal spring sheets 463, and are limited by the front side wall of the inner cavity of the movable groove 461. When the two forks 46 insert the pallet 8, the pallet 8 will support the two limit plates 462 to push the two metal spring sheets 463. In this way, when the forks 46 insert the pallet 8, the two limit plates 462 are pushed by the pallet 8 from a vertical state to a horizontal state. After the pallet 8 is completely inserted by the two forks 46, the two limit plates 462 and the pallet 8 are released from the limited state, so the two limit plates 462 stand up again through the tension of the two metal spring sheets 463 to limit the pallet 8.

[0048] It should be noted that the specific installation method of the electric hydraulic cylinder 41 and the servo motor 91, the oil circuit connection method and the control method used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A three-dimensional storage stacking crane, comprising a crane bridge (1), a load-bearing frame (2) and a pallet (8), characterized in that: The back end of the bearing frame (2) is fixedly connected to the output end of the crane bridge (1); a fork holding mechanism (4) is slidably arranged on the bottom wall of the inner cavity of the bearing frame (2); the tray (8) is arranged on the fork holding mechanism (4); clamping plates (7) are symmetrically installed on the left and right sides of the inner cavity of the bearing frame (2); a pneumatic clamping mechanism (5) is installed at the bottom end of the bearing frame (2); a constant pressure mechanism (6) is arranged on the pneumatic clamping mechanism (5); and a pushing component (9) is installed in the middle of the top end of the bearing frame (2).

2. A three-dimensional storage stacking crane according to claim 1, characterized in that: The fork holding mechanism (4) comprises an electric hydraulic cylinder (41), a slide groove (47), two articulated seats (42) and two forks (46); the slide groove (47) is arranged in the middle of the bottom end of the supporting frame (2); a sliding seat (43) is slidably mounted on the inner surface of the slide groove (47); the two articulated seats (42) are respectively fixedly mounted between the rear side of the middle of the bottom end of the supporting frame (2) and the bottom end of the sliding seat (43); the head and tail ends of the electric hydraulic cylinder (41) are respectively rotatably connected to the two articulated seats (42).

3. A three-dimensional storage stacking crane according to claim 2, characterized in that: A fixing seat (44) is fixedly mounted on the top of the sliding seat (43); a plurality of mounting grooves (451) are equidistantly formed at the front end of the fixing seat (44); the two forks (46) are respectively inserted into the inner cavities of the plurality of mounting grooves (451) and are connected by bolt threads; the pallet (8) is held by the two forks (46).

4. A three-dimensional storage stacking crane according to claim 3, characterized in that: Two movable grooves (461) are respectively provided on the front sides of the top ends of the two forks (46), two limit plates (462) are respectively installed in the inner cavities of the two movable grooves (461), and two metal springs (463) are respectively installed in the inner cavities of the two movable grooves (461) to abut against the two limit plates (462).

5. The three-dimensional storage stacking crane according to claim 3, characterized in that: The pneumatic clamping mechanism (5) comprises a baffle (56), two cylinders (52) and two pneumatic cylinders (54), wherein the baffle (56) is fixedly mounted at the bottom edge of the supporting frame (2), and the two cylinders (52) are respectively fixedly mounted on two sides of the bottom of the supporting frame (2) away from the middle thereof, and two pistons (53) are respectively slidably mounted in the inner cavities of the two cylinders (52), and the two pistons (53) are respectively fixedly connected to the slide groove (47) by two symmetrical connecting rods (51), and the front ends of the two pistons (53) are respectively mounted with two one-way valves (531) connected to the inner cavities of the two cylinders (52).

6. The three-dimensional storage stacking crane according to claim 5, characterized in that: The two air cylinders (54) are fixedly mounted on the left and right ends of the supporting frame (2), respectively; the inner cavities of the two air cylinders (54) are connected to the inner cavities of the two cylinders (52) through two air pipes (532), respectively; the end surfaces of the two air cylinders (54) close to each other are provided with sliding holes (541) connected to their inner cavities; two sliding rods (55) are slidably mounted in the inner cavities of the two connecting rods (51), respectively; the end surfaces of the two sliding rods (55) close to each other are fixedly connected to the two clamping plates (7), respectively.

7. The three-dimensional storage stacking crane according to claim 6, characterized in that: The constant pressure mechanism (6) comprises two tubes (61) and two recoil springs (64). The two tubes (61) are respectively fixedly mounted on the end surfaces of the two air pressure cylinders (54) which are away from each other. Two air inlet holes (611) which are connected to the inner cavities of the two air pressure cylinders (54) are respectively provided on one end of the two tubes (61) extending into the inner cavities of the two air pressure cylinders (54). Two pressure relief holes (613) which are connected to the inner cavities of the two air pressure cylinders (54) are respectively provided on the outer surfaces of the two tubes (61). Two pressing plates (63), the end surfaces of the two tube bodies (61) that are away from each other are respectively provided with two threaded holes (612) that are connected to the inner cavity thereof, two threaded rods (62) are respectively threadedly installed in the inner cavities of the two threaded holes (612), the two recoil springs (64) are respectively placed in the inner cavities of the two tube bodies (61), and the head and tail ends of the two recoil springs (64) are respectively supported between the two threaded rods (62) and the two pressing plates (63), and the top ends of the two threaded rods (62) are respectively fixedly installed with two twist rings (621).

8. The three-dimensional storage stacking crane according to claim 1, characterized in that: The pushing assembly (9) comprises a servo motor (91), a rotating ring block (92) and a second slide groove (96), wherein the servo motor (91) is fixedly mounted on the rear side of the middle part of the top end of the supporting frame (2), and the rotating ring block (92) is fixedly mounted on the front side of the middle part of the top end of the supporting frame (2). The output shaft of the servo motor (91) is fixedly connected to the screw rod (93) through a coupling, and one end of the screw rod (93) away from the servo motor (91) is rotatably mounted on the rotating ring block (92). The second slide groove (96) is provided in the middle part of the top end of the supporting frame (2), and a nut slider (94) adapted to the second slide groove (96) is threadedly mounted on the outer surface of the screw rod (93), and a pushing plate (95) is fixedly mounted on one end of the nut slider (94) extending into the inner cavity of the supporting frame (2) through the second slide groove (96).

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