A lifting and unloading device for a support transport vehicle and its usage method

Abstract

The present invention relates to the technical field of support transport vehicles, and in particular to a lifting and unloading device and a method for using a support transport vehicle, including a transport vehicle body, on which are provided: a bottom flat plate, a bottom protrusion and a side flat plate, a bottom flat plate fixedly mounted at the middle ends of two supporting plates, nine bottom protrusions fixedly connected to the outer wall of the upper end of a bottom flat plate in a straight and equidistant manner, and two side flat plates fixedly connected to the left and right ends of a bottom flat plate, respectively. When the top flat plate is connected to a rectangular frame, the present invention first allows the nine bottom protrusions to enter the bottom ends of nine Y-axis supports, and then allows two X-shaped reinforcement supports to respectively abut against the left and right ends of the rectangular frame, and finally allows the nine rear end protrusions to enter the rear ends of nine Z-axis supports, and the nine front end protrusions to enter the front ends of the nine Z-axis supports, so as to provide sufficient limit for the rectangular frame and prevent the rectangular frame from tilting and deforming during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of support transport vehicles, and in particular to a lifting and unloading device of a support transport vehicle and a use method thereof. Background Art

[0002] A transport vehicle is a logistics transport equipment used to transport goods; and the prior art, such as the electric transport vehicle disclosed in the announcement number CN112938825B, includes a vehicle body, a drive system, a hydraulic system, a pedal assembly, a fork frame, a connecting rod wheel frame system, a battery assembly, a steering system and a balance wheel assembly; and the prior art also uses an intelligent platform transport vehicle for transporting full-house brackets disclosed in the announcement number CN118323281B, which includes a vehicle body, a driving wheel installed on the vehicle body, a control system for controlling the operation of the driving wheel, and a vehicle body with multiple long slots. However, the above-mentioned technology still has problems in use due to structural limitations:

[0003] When the electric transporter of the prior art transports the full-hall bracket, since the full-hall bracket is composed of brackets in three directions of X-axis, Y-axis and Z-axis that are staggered with each other, at least two directions of the full-hall bracket need to be limited during the transportation process, otherwise the full-hall bracket is very likely to be relatively offset due to insufficient limiting, which in turn causes the full-hall bracket to tilt and deform. However, the above technology only limits the bracket in one direction of the full-hall bracket, and does not provide sufficient limiting for the full-hall bracket, which makes the full-hall bracket very likely to tilt and deform during transportation. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that full-chair brackets are very likely to tilt and deform during transportation, and to propose a lifting and unloading device for a bracket transport vehicle and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lifting and unloading device for a support transport vehicle and a method for using the same, comprising a transport vehicle body, wherein the transport vehicle body is provided with a rectangular frame consisting of nine X-axis supports, nine Y-axis supports and nine Z-axis supports, and the transport vehicle body is provided with:

[0007] A supporting plate, an iron shaft and a rotating wheel, wherein two supporting plates are mounted on the transport vehicle body, and the two rotating wheels are rotatably mounted on the two supporting plates through two iron shafts; a bottom plate, a bottom protrusion, a side plate, a bottom plate and a rear end protrusion, wherein one bottom plate, two side plates and one bottom plate form a U-shaped fixed frame, and nine bottom protrusions and nine rear end protrusions are respectively arranged on one bottom plate and one bottom plate;

[0008] A front end plate, a limit long block and a front end protrusion, two of the limit long blocks and nine of the front end protrusions are arranged on a front end plate; a top plate, a rotating cylinder and an X-shaped reinforcing bracket, four of the rotating cylinders are rotatably installed on a top plate, and two of the X-shaped reinforcing brackets are respectively arranged on two side end plates; a rotating mechanism, an adjusting mechanism, a connecting mechanism and a pushing mechanism, the rotating mechanism, the adjusting mechanism, the connecting mechanism and the pushing mechanism are all arranged above the supporting plate.

[0009] Preferably, the rotating mechanism comprises:

[0010] A rotating shaft, an L-shaped connecting rod, an avoidance groove and a driving motor, wherein one of the rotating shafts is rotatably installed inside a bottom end plate and two side end plates, two ends of one of the L-shaped connecting rods are respectively fixedly connected to a middle end of a rotating shaft and a bottom end of a front end plate, one of the avoidance grooves is opened at the bottom end of a bottom end plate, one of the driving motors is fixedly installed on the inner wall of the left side end plate, and the output end of the driving motor is fixedly connected to one end of the rotating shaft located inside the left side end plate;

[0011] A driving gear, a vertical slide groove, a connecting long rod, a driven rack, an arc-shaped clamp and a magnet block, the two driving gears are respectively key-connected to the two ends of the rotating shaft located inside the two side end plates, the two vertical slide grooves are respectively penetrated and opened at the front ends of the two side end plates, the two connecting long rods are respectively penetrated and slidably sleeved in the two vertical slide grooves, the two driven racks are respectively fixedly connected to one end of the two connecting long rods located inside the side end plates, and the driven racks are meshed and connected with the driving gear, the two arc-shaped clamps are respectively fixedly connected to one end of the two connecting long rods located outside the side end plates, and the two arc-shaped clamps are respectively aligned up and down with one end of the two iron shafts, and the two groups of magnet blocks are respectively fixedly connected to the inner arc ends of the two arc-shaped clamps.

[0012] Preferably, the adjustment mechanism comprises:

[0013] Vertical guide grooves, movable brackets, vertical cylinders, transverse slide rails and transverse cylinders, two groups of vertical guide grooves are respectively opened on the inner walls of the two side end plates, the two movable brackets are respectively slidably sleeved in the two vertical guide grooves, two groups of vertical cylinders are respectively fixedly installed inside the two side end plates, and the output end of one group of vertical cylinders is fixedly connected to the middle end of a movable bracket, the two transverse slide rails are respectively fixedly connected to the upper ends of the two movable brackets, the two transverse cylinders are respectively fixedly installed in the two transverse slide rails, the output ends of the two transverse cylinders are respectively fixedly connected to the left and right ends of a top plate, and the left and right ends of a top plate are respectively slidably sleeved in the two transverse slide rails.

[0014] Preferably, the connecting mechanism comprises:

[0015] A fixed motor, a rotating shaft, a starting gear, a limiting circular groove, a rotating gear ring and an adjusting gear, wherein one of the fixed motors is fixedly connected to the inside of a top plate, one of the rotating shafts is rotatably installed in the inside of a top plate, and the rotating shaft is fixedly connected to the output end of the fixed motor, one of the starting gears is keyed to a rotating shaft, one of the limiting circular grooves is opened on the bottom inner wall of a top plate, one of the rotating gear rings is slidably sleeved in a limiting circular groove, and one of the starting gears is meshedly connected to a rotating gear ring, four of the adjusting gears are respectively keyed to one end of four rotating cylinders located inside a top plate, and four of the adjusting gears are meshedly connected to a rotating gear ring.

[0016] Preferably, the ejection mechanism comprises:

[0017] A first guide groove, a first mounting plate, a first push cylinder and a first through hole, wherein one of the first guide grooves is provided at the top inner wall of a bottom plate, one of the first mounting plates is slidably mounted in one of the first guide grooves, one of the first push cylinders is fixedly connected to the rear inner wall of a bottom plate, and one of the output ends of the first push cylinder is fixedly connected to one of the first mounting plates, nine of the first through holes are equidistantly arranged at the front end of a bottom plate in a straight line, and nine of the rear end protrusions are slidably mounted in nine of the first through holes respectively;

[0018] A second guide groove, a second mounting plate, a second pushing cylinder and a second through hole, wherein one of the second guide grooves is provided at the top inner wall of a front end flat plate, one of the second mounting plates is slidably mounted in a second guide groove, one of the second pushing cylinders is fixedly mounted at the front inner wall of a front end flat plate, and an output end of a second pushing cylinder is fixedly connected to a second mounting plate, nine of the second through holes are provided at a rear end of a front end flat plate in a straight line and equidistant manner, and the nine front end protrusions are slidably mounted in the nine second through holes respectively.

[0019] Preferably, the ejection mechanism further comprises:

[0020] A third push cylinder, a third guide groove, a mounting truss and an X-shaped through groove, wherein one of the third push cylinders is fixedly mounted on an inner wall of a side end plate, a group of the third guide grooves are respectively opened on the front and rear inner walls of a side end plate, one of the mounting trusses is slidably sleeved in a group of third guide grooves, one of the X-shaped through grooves is penetrated and opened on a side end plate, one of the X-shaped reinforcement brackets is slidably sleeved in an X-shaped through groove, and the middle end of an X-shaped reinforcement bracket is fixedly connected to the middle end of one of the mounting trusses;

[0021] A fixed arc plate, a driving shaft, a rotating arc plate, a reset torsion spring, a vertical slide rail and a blocking plate, wherein the two fixed arc plates are respectively fixedly connected to the two ends of the bottom of an X-shaped reinforced bracket, the two driving shafts are respectively rotatably installed at the two ends of the top of an X-shaped reinforced bracket, the two rotating arc plates are respectively fixedly sleeved on the two driving shafts, the two reset torsion springs are respectively fixedly sleeved on the two driving shafts, the two vertical slide rails are symmetrically fixedly connected to the middle end of a movable bracket, the two blocking plates are respectively slidably sleeved in the two vertical slide rails, and the two blocking plates are both movably opposed to a mounting truss.

[0022] A method for using a lifting and unloading device of a support transport vehicle comprises the following steps:

[0023] Step S1: First, the front plate is rotated from a vertical state to a horizontal state until the front plate is in a horizontal state and abuts against the two rotating wheels. At this time, the arc-shaped clamp moves downward and abuts against one end of the two iron shafts. At the same time, the magnet block of the arc-shaped clamp is used to magnetically adsorb the iron shafts to prevent the two rotating wheels from rotating, so that the two rotating wheels support the front plate in a horizontal state.

[0024] Step S2: Then, the rectangular frame is placed between the two limit long blocks to limit the left and right ends of the rectangular frame, and the vertical cylinder and the horizontal cylinder are started to move the four rotating cylinders to align with the top ends of the four Y-axis brackets. At this time, the fixed motor is started to screw the four rotating cylinders into the inner walls of the top ends of the four Y-axis brackets to connect the top flat plate with the rectangular frame;

[0025] Step S3: The nine bottom end protrusions are then allowed to enter the bottom ends of the nine Y-axis brackets through the vertical cylinder and the horizontal cylinder. At this time, the third push cylinder is started to allow the two X-shaped reinforcement brackets to respectively abut against the left and right ends of the rectangular frame, and the two rotating arc plates at the top of an X-shaped reinforcement bracket are respectively abutted against the two rotating cylinders, and the two fixed arc plates at the bottom end of an X-shaped reinforcement bracket are respectively abutted against the two bottom end protrusions, so as to strengthen and fix the left and right ends of the rectangular frame;

[0026] Step S4: Then, the front plate is driven to rotate to a vertical state, so that the two limit long blocks are against the left and right ends of the rectangular frame, and the first push cylinder and the second push cylinder are started to allow the nine rear end protrusions to enter the rear ends of the nine Z-axis brackets, and the nine front end protrusions to enter the front ends of the nine Z-axis brackets, and the rectangular frame is further fixed to facilitate the subsequent transportation of the rectangular frame;

[0027] Step S5: If the rectangular frame needs to be disassembled, drive the top plate and the rectangular frame to move upward, so that the Y-axis pushes the rotating arc plate at the top of the bracket to deflect upward and away from the rotating cylinder, and the bottom of the Y-axis bracket moves upward away from the bottom end protrusion, and then the front end plate is rotated to a horizontal state, and the rectangular frame is placed between the two limit long blocks, and then the four rotating cylinders are rotated out to disconnect the connection between the top plate and the rectangular frame.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. When the top flat plate is connected to the rectangular frame, the present invention allows the nine bottom end protrusions to enter the bottom ends of the nine Y-axis brackets through the vertical cylinder and the horizontal cylinder, and starts the third pushing cylinder, so that the two X-shaped reinforcement brackets are respectively against the left and right ends of the rectangular frame to strengthen and fix the left and right ends of the rectangular frame, and then the front end flat plate is rotated to a vertical state, and the nine rear end protrusions are allowed to enter the rear ends of the nine Z-axis brackets, and the nine front end protrusions are allowed to enter the front ends of the nine Z-axis brackets to further fix the rectangular frame, so as to provide sufficient limit for the rectangular frame to prevent the rectangular frame from tilting and deforming during transportation.

[0030] 2. The present invention starts the driving motor to rotate the front end plate to a horizontal state and abut against the two rotating wheels. At this time, the two arc-shaped clamps move downward and abut against one end of the two iron shafts, and the iron shafts are magnetically adsorbed by the magnet blocks of the arc-shaped clamps to prevent the two rotating wheels from rotating. The rectangular frame is then placed between the two limit long blocks. Since the two rotating wheels support the front end plate in a horizontal state, the front end plate is prevented from continuing to deflect downward due to the weight of the rectangular frame, which affects the limit on the left and right ends of the rectangular frame.

[0031] 3. When the rectangular frame is transported, the present invention moves the rectangular frame upward to the top of the bottom flat plate through the vertical cylinder, then rotates the front flat plate to a horizontal state, and transports the rectangular frame to the foundation by lifting and hoisting through the vertical cylinder and the horizontal cylinder. After that, the four rotating cylinders are rotated out to disconnect the connection between the top flat plate and the rectangular frame, and then the rectangular frame is automatically transported to the foundation, thereby reducing the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the main structure of a carrier vehicle of a lifting and unloading device for a bracket carrier vehicle proposed by the present invention;

[0033] Figure 2 It is a left-side cross-sectional schematic diagram of a transport vehicle body of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0034] Figure 3A schematic diagram of the supporting plate and side end flat plate structure of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0035] Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A;

[0036] Figure 5 A schematic front section view of a support plate and a side end plate of a lifting and unloading device of a support transport vehicle proposed by the present invention Figure 1 ;

[0037] Figure 6 A schematic front section view of a support plate and a side end plate of a lifting and unloading device of a support transport vehicle proposed by the present invention Figure 2 ;

[0038] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part B;

[0039] Figure 8 A left-side cross-sectional view of the support plate and bottom plate of a lifting and unloading device of a support transport vehicle proposed by the present invention Figure 1 ;

[0040] Fig. 9 For the present invention Figure 8 An enlarged schematic diagram of part C of FIG.

[0041] Fig.10 A left-side cross-sectional view of the support plate and bottom plate of a lifting and unloading device of a support transport vehicle proposed by the present invention Figure 2 ;

[0042] Fig.11 A schematic top view of a support plate and a side end plate of a lifting and unloading device of a support transport vehicle proposed by the present invention Figure 1 ;

[0043] Fig.12 A schematic top view of a support plate and a side end plate of a lifting and unloading device of a support transport vehicle proposed by the present invention Figure 2 ;

[0044] Fig.13 It is a right sectional schematic diagram of a bottom flat plate and a front flat plate of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0045] Fig.14 For the present invention Fig.13 An enlarged schematic diagram of part D of FIG.

[0046] Fig.15 A schematic diagram of the structure of an X-axis bracket, a Y-axis bracket and a Z-axis bracket of a lifting and unloading device of a bracket transporter proposed by the present invention;

[0047] Fig.16 A schematic side cross-sectional view of a front end flat plate of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0048] Fig.17 A schematic side cross-sectional view of a bottom flat plate of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0049] Fig.18 A schematic diagram of the structure of a mobile support and a vertical cylinder of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0050] Fig.19 A schematic diagram of an X-shaped reinforcement bracket and a mounting truss structure of a lifting and unloading device of a bracket transport vehicle proposed by the present invention;

[0051] Fig. 20 A schematic diagram of the side end plate structure of a lifting and unloading device of a support transport vehicle proposed by the present invention;

[0052] Fig.21 The present invention provides a schematic diagram of the bottom plate structure of a lifting and unloading device of a support transport vehicle.

[0053] In the figure: 1. the main body of the transport vehicle; 2. the supporting plate; 3. the iron shaft; 4. the rotating wheel; 5. the X-axis bracket; 6. the Y-axis bracket; 7. the Z-axis bracket; 8. the bottom plate; 9. the bottom protrusion; 10. the side plate; 11. the bottom plate; 12. the rear protrusion; 13. the front plate; 14. the limit long block; 15. the front protrusion; 16. the top plate; 17. the rotating cylinder; 18. the X-shaped reinforcement bracket; 19. the rotating shaft; 20. the L-shaped connecting rod; 21. the avoidance groove; 22. the driving motor; 23. the driving gear; 24. the vertical slide groove; 25. the connecting rod; 26. the driven rack; 27. the arc clamp; 28. the magnet block; 29. ​​the vertical guide groove; 30 , movable bracket; 31, vertical cylinder; 32, horizontal slide rail; 33, horizontal cylinder; 34, fixed motor; 35, rotating shaft; 36, starting gear; 37, limiting circular groove; 38, rotating gear ring; 39, adjusting gear; 40, first guide groove; 41, first mounting plate; 42, first push cylinder; 43, first through hole; 44, second guide groove; 45, second mounting plate; 46, second push cylinder; 47, second through hole; 48, third push cylinder; 49, third guide groove; 50, mounting truss; 51, X-shaped through groove; 52, fixed arc plate; 53, pushing shaft; 54, rotating arc plate; 55, reset torsion spring; 56, vertical slide rail; 57, blocking plate. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0055] Reference Figure 1-Figure 21 A lifting and unloading device and a method for using a support transport vehicle include a transport vehicle body 1. The transport vehicle body 1 is as shown in the electric transport vehicle of the patent document (Announcement No.: CN112938825B), and the transport vehicle body 1 is a mature technical means in the field of this application, so it is not described in detail. Fig.15 As shown, the transport vehicle body 1 is provided with nine X-axis brackets 5, nine Y-axis brackets 6 and nine Z-axis brackets 7. The nine X-axis brackets 5, nine Y-axis brackets 6 and nine Z-axis brackets 7 are staggered to form a rectangular frame and are connected to each other through bracket fasteners. When the rectangular frame is transported to the foundation, since a pad and an adjustable base are provided at the foundation, the rectangular frame needs to be threadedly installed at the adjustable base. The X-axis bracket 5, the Y-axis bracket 6 and the Z-axis bracket 7 are all circular cylinder structures, and threads are provided at the inner walls of both ends of the circular cylinder. Therefore, brackets in any direction can be installed at the adjustable base, and multiple rectangular frames can be assembled at the foundation through bracket fasteners to form a larger rectangular frame;

[0056] The transport vehicle body 1 is provided with a supporting plate 2, an iron shaft 3 and a rotating wheel 4, the two supporting plates 2 are symmetrically installed at the bottom end of the transport vehicle body 1, the two iron shafts 3 are rotatably installed at the front ends of the two supporting plates 2, and the two rotating wheels 4 are fixedly mounted on the two iron shafts 3. When the transport vehicle body 1 moves, the two rotating wheels 4 are used to assist the transport vehicle body 1 to move; the bottom plate 8, the bottom protrusion 9, the side plate 10, the bottom plate 11 and the rear end protrusion 12, a bottom plate 8 is fixedly installed at the middle end of the two supporting plates 2, and the front end of the bottom plate 8 is connected to the inside of the bottom plate 8, and the nine bottom protrusions 9 are fixedly connected to the outer upper end of a bottom plate 8 in a straight line equidistant manner. The nine bottom end protrusions 9 are respectively movably mounted on the bottom ends of the nine Y-axis brackets 6 to limit the bottom ends of the nine Y-axis brackets 6, the two side end plates 10 are respectively fixedly connected to the left and right ends of a bottom end plate 8, and the upper ends of the side end plates 10 are connected to the inside of the side end plates 10, a bottom end plate 11 is fixedly connected to the rear end of a bottom end plate 8, nine rear end protrusions 12 are slidably arranged on a bottom end plate 11 in a straight line equidistant manner, and the nine rear end protrusions 12 are respectively movably mounted on the rear ends of the nine Z-axis brackets 7 to limit the rear ends of the nine Z-axis brackets 7, a bottom end plate 8, two side end plates 10 and a bottom end plate 11 form a U-shaped fixed frame;

[0057] The transport vehicle body 1 is also provided with a front end plate 13, a limiting long block 14 and a front end protrusion 15. A front end plate 13 is rotatably arranged at the front end of a bottom plate 8, and two limiting long blocks 14 are symmetrically formed in one piece at the rear end outer wall of a front end plate 13. When the front end plate 13 is in a horizontal state, the rectangular frame is placed between the two limiting long blocks 14 to limit the left and right ends of the rectangular frame; and when the rectangular frame is placed on the U-shaped fixed frame, the front end plate 13 is driven to be in a vertical state, and the two limiting long blocks 14 continue to limit the left and right ends of the rectangular frame. The nine front end protrusions 15 are slidably arranged at the outer wall of the rear end of a front end plate 13 in a straight line equidistant manner, and the nine front end protrusions 15 are movably mounted on the front ends of the nine Z-axis brackets 7 to limit the front ends of the nine Z-axis brackets 7; the top plate 16, the rotating cylinder 17 and the X-shaped reinforcing bracket 18, a top plate 16 is movably arranged at the top end of a bottom plate 11, four rotating cylinders 17 are rotatably installed on a top plate 16, and one end of the four rotating cylinders 17 outside the top plate 16 is provided with a thread, and as shown in the attached Fig.12 As shown, the threaded ends of the four rotating cylinders 17 are respectively threadedly connected with the inner walls of the top ends of the four Y-axial brackets 6 located at the edges of the U-shaped fixed frame, so as to facilitate the subsequent lifting and hoisting of the rectangular frame through the top plate 16, and the two X-shaped reinforcement brackets 18 are respectively slidably arranged at the two side end plates 10, and the two X-shaped reinforcement brackets 18 are respectively movably opposed to the left and right ends of the rectangular frame to strengthen and fix the left and right ends of the rectangular frame and prevent relative displacement inside the rectangular frame;

[0058] Preferably, the transport vehicle body 1 is also provided with a rotating mechanism, which is arranged inside the two side end plates 10, and the rotating mechanism is used to rotate the front end plate 13 to a horizontal state, so that the left and right ends of the rectangular frame are limited and placed between the two limit long blocks 14, so as to facilitate the subsequent connection of the top plate 16 with the rectangular frame; an adjusting mechanism, which is arranged inside the two side end plates 10, and after the left and right ends of the rectangular frame are limited, a top plate 16 is moved in the up-down direction and the front-back direction to the top of the rectangular frame located at the front end plate 13; a connecting mechanism, which is arranged inside a top plate 16, and the connecting mechanism is used to screw the threaded ends of the four rotating cylinders 17 into the corresponding inner walls of the tops of the four Y-axial brackets 6, so that the top plate 16 is connected to the rectangular frame; a pushing mechanism, which is arranged inside the two side end plates 10, a bottom plate 11 and a front end plate 13, and the pushing mechanism is used to push out nine front end protrusions 15, nine rear end protrusions 12 and two X-shaped reinforcing brackets 18, so as to provide sufficient limiting for the rectangular frame, and avoid the rectangular frame from tilting and deforming during transportation.

[0059] The rotating mechanism includes a rotating shaft 19, an L-shaped connecting rod 20, an avoidance groove 21 and a driving motor 22. A rotating shaft 19 is rotatably installed inside a bottom end plate 8 and two side end plates 10. The two ends of an L-shaped connecting rod 20 are respectively fixedly connected to the middle end of a rotating shaft 19 and the bottom end of a front end plate 13. Figure 5 and attached Fig.10 As shown, an avoidance groove 21 is opened at the bottom end of a bottom plate 8, a driving motor 22 is fixedly installed on the inner wall of the left side plate 10, and the output end of the driving motor 22 is fixedly connected to one end of the rotating shaft 19 located inside the left side plate 10. In the process of rotating the front plate 13 from a vertical state to a horizontal state, the driving motor 22 drives the rotating shaft 19 to rotate, so that the L-shaped connecting rod 20 rotates from the avoidance groove 21 to the outside of the bottom plate 8, and then the avoidance groove 21 is used to avoid the L-shaped connecting rod 20;

[0060] Preferably, the rotating mechanism also includes a driving gear 23, a vertical slide groove 24, a connecting rod 25, a driven rack 26, an arc-shaped clamp 27 and a magnet block 28. The two driving gears 23 are respectively keyed to the two ends of the rotating shaft 19 located inside the two side end plates 10, the two vertical slide grooves 24 are respectively penetrated and opened at the front ends of the two side end plates 10, the two connecting rods 25 are respectively penetrated and slidably sleeved in the two vertical slide grooves 24, the two driven racks 26 are respectively fixedly connected to one end of the two connecting rods 25 located inside the side end plates 10, the two arc-shaped clamps 27 are respectively fixedly connected to one end of the two connecting rods 25 located outside the side end plates 10, and the two arc-shaped clamps 27 is aligned with one end of the two iron shafts 3 respectively, and two groups of magnet blocks 28 are fixedly connected to the inner arc ends of the two arc-shaped clamps 27. When the front end plate 13 rotates to a horizontal state and abuts against the two rotating wheels 4, the driven rack 26 is meshed and connected with the driving gear 23, so that the two arc-shaped clamps 27 move downward and abut against one end of the two iron shafts 3. At the same time, the two groups of magnet blocks 28 are magnetically adsorbed with the two iron shafts 3 respectively, so as to doubly prevent the two rotating wheels 4 from rotating, so that the two rotating wheels 4 support the front end plate 13 in a horizontal state, and prevent the front end plate 13 from continuing to deflect downward due to the weight of the rectangular frame, thereby affecting the limit of the left and right ends of the rectangular frame.

[0061] The adjusting mechanism includes a vertical guide groove 29, a movable bracket 30, a vertical cylinder 31, a transverse slide rail 32 and a transverse cylinder 33. Two groups of vertical guide grooves 29 are respectively opened at the inner walls of the two side end plates 10. The two movable brackets 30 are respectively slidably sleeved in the two vertical guide grooves 29. The two groups of vertical cylinders 31 are respectively fixedly installed inside the two side end plates 10, and the output end of one group of vertical cylinders 31 is fixedly connected to the middle end of a movable bracket 30. The two transverse slide rails 32 are respectively fixedly connected to the upper ends of the two movable brackets 30. The two transverse cylinders 33 are respectively fixedly installed in the two transverse slide rails 32. The output ends of the two transverse cylinders 33 are respectively fixedly connected to the left and right ends of a top plate 16. The left and right ends of a top plate 16 are respectively slidably sleeved in the two transverse slide rails 32. The top plate 16 is moved in the up and down directions through the vertical cylinder 31, and the top plate 16 is moved in the front and back directions through the transverse cylinder 33.

[0062] Preferably, the connecting mechanism includes a fixed motor 34, a rotating shaft 35, a starting gear 36, a limiting circular groove 37, a rotating ring gear 38 and an adjusting gear 39, a fixed motor 34 is fixedly connected to the inside of a top plate 16, a rotating shaft 35 is rotatably installed inside a top plate 16, and the rotating shaft 35 is fixedly connected to the output end of the fixed motor 34, a starting gear 36 is key-connected to a rotating shaft 35, a limiting circular groove 37 is opened at the bottom inner wall of a top plate 16, and a rotating ring gear 38 is slidably sleeved. It is installed in a limiting circular groove 37, and because a starting gear 36 is meshed with a rotating ring gear 38, four adjusting gears 39 are respectively keyed to one end of four rotating cylinders 17 located inside a top flat plate 16, and at the same time, the four adjusting gears 39 are all meshed with a rotating ring gear 38, allowing the four rotating cylinders 17 to rotate in the same direction, so that the four rotating cylinders 17 can be screwed into the inner walls of the top ends of the four Y-axis brackets 6 at the same time, or the four rotating cylinders 17 can be screwed out of the inner walls of the top ends of the four Y-axis brackets 6 at the same time.

[0063] The ejection mechanism includes a first guide groove 40, a first mounting plate 41, a first push cylinder 42 and a first through hole 43. A first guide groove 40 is provided at the top inner wall of a bottom plate 11. A first mounting plate 41 is slidably mounted in a first guide groove 40. A first push cylinder 42 is fixedly connected to the rear inner wall of a bottom plate 11. An output end of a first push cylinder 42 is fixedly connected to a first mounting plate 41. Nine first through holes 43 are provided at the front end of a bottom plate 11 in a straight line and equidistantly. Nine rear end protrusions 12 are slidably mounted in nine first through holes 43 respectively. The first mounting plate 41 is driven by the first push cylinder 42 to move linearly along the first guide groove 40, so that the nine rear end protrusions 12 move toward the bottom plate 11 or toward the rectangular frame.

[0064] Preferably, the ejection mechanism also includes a second guide groove 44, a second mounting plate 45, a second pushing cylinder 46 and a second through hole 47, a second guide groove 44 is opened at the top inner wall of a front end plate 13, a second mounting plate 45 is slidably sleeved in a second guide groove 44, a second pushing cylinder 46 is fixedly installed at the front inner wall of a front end plate 13, and an output end of a second pushing cylinder 46 is fixedly connected to a second mounting plate 45, nine second through holes 47 are opened at the rear end of a front end plate 13 in a straight line and equidistant manner, nine front end protrusions 15 are respectively slidably sleeved in nine second through holes 47, and the second mounting plate 45 is driven by the second pushing cylinder 46 to move linearly along the second guide groove 44, so that the nine front end protrusions 15 move toward the front end plate 13, or move toward the rectangular frame.

[0065] The pushing mechanism also includes a third pushing cylinder 48, a third guide groove 49, a mounting truss 50 and an X-shaped through groove 51, a third pushing cylinder 48 is fixedly installed on the inner wall of a side end plate 10, a group of third guide grooves 49 are respectively opened on the front and rear inner walls of a side end plate 10, a mounting truss 50 is slidably sleeved in a group of third guide grooves 49, and the mounting truss 50 is linearly moved along the third guide grooves 49 by the third pushing cylinder 48, an X-shaped through groove 51 is penetrated and opened on a side end plate 10, an X-shaped reinforcing bracket 18 is slidably sleeved in an X-shaped through groove 51, and the middle end of an X-shaped reinforcing bracket 18 is fixedly connected to the middle end of a mounting truss 50, so that the X-shaped reinforcing bracket 18 moves toward the side end plate 10, or moves toward the rectangular frame;

[0066] Preferably, the ejection mechanism also includes a fixed arc plate 52, a pushing shaft 53, a rotating arc plate 54, a reset torsion spring 55, a vertical slide rail 56 and a blocking plate 57. The two fixed arc plates 52 are respectively fixedly connected to the two ends of the bottom of an X-shaped reinforcement bracket 18, the two pushing shafts 53 are respectively rotatably installed at the two ends of the top of an X-shaped reinforcement bracket 18, the two rotating arc plates 54 are respectively fixedly sleeved on the two pushing shafts 53, and the two reset torsion springs 55 are respectively fixedly sleeved on the two pushing shafts 53. When the two X-shaped reinforcement brackets 18 are respectively against the left and right ends of the rectangular frame, the two rotating arc plates 54 at the top end of an X-shaped reinforcement bracket 18 are respectively against the two rotating cylinders 17, and the two fixed arc plates 52 at the bottom end of an X-shaped reinforcement bracket 18 are respectively against the two bottom end protrusions 9, so as to strengthen and fix the left and right ends of the rectangular frame. The two vertical slide rails 56 are symmetrically fixedly connected to the middle end of a movable bracket 30, and the two blocking plates 57 are respectively slidably sleeved in the two vertical slide rails 56. Figure 7As shown, when the two X-shaped reinforcing brackets 18 are respectively abutted against the left and right ends of the rectangular frame, the two blocking plates 57 are movably abutted against one mounting truss 50 to lock the two X-shaped reinforcing brackets 18 .

[0067] It is particularly noted that when the rectangular frame needs to be disassembled, the rectangular frame, the movable bracket 30 and the blocking plate 57 are driven to move upward, so that the top end of the Y-axis bracket 6 pushes the rotating arc plate 54 to deflect upward and away from the rotating cylinder 17, and the bottom end of the Y-axis bracket 6 moves upward away from the bottom end protrusion 9 until the two blocking plates 57 are away from an installation truss 50 to release the lock of the two X-shaped reinforcing brackets 18, and then the two X-shaped reinforcing brackets 18 are driven to move toward the side end plate 10, so that the rotating arc plate 54 is away from the Y-axis bracket 6, and under the elastic force of the reset torsion spring 55, the rotating arc plate 54 is restored to a horizontal state, so as to facilitate the subsequent limiting of the next rectangular frame.

[0068] The present invention can be explained by the following operation mode:

[0069] First, start the drive motor 22, and let the output end of the drive motor 22 drive the driving gear 23 and the rotating shaft 19 to rotate. Fig. 9 As shown, the driving gear 23 rotates clockwise, and the rotating shaft 19 drives the front plate 13 to rotate from a vertical state to a horizontal state through the L-shaped connecting rod 20, until the front plate 13 is in a horizontal state and abuts against the two rotating wheels 4. At this time, since the driving gear 23 is meshed and connected with the driven rack 26, the driven rack 26 drives the arc clamp 27 to move downward through the connecting long rod 25, so that the two arc clamps 27 respectively abut against one end of the two iron shafts 3, and at the same time, the magnet block 28 of the arc clamp 27 is used to magnetically adsorb the iron shaft 3 to prevent the two rotating wheels 4 from rotating, and the two rotating wheels 4 support the front plate 13 in a horizontal state;

[0070] Then, the rectangular frame is placed between the two limiting long blocks 14, that is, the left and right ends of the X-axis bracket 5 are respectively against the two limiting long blocks 14 to limit the left and right ends of the rectangular frame, and the vertical cylinder 31 is started, and the output end of the vertical cylinder 31 drives the top plate 16 to move upward through the mobile bracket 30, and then the horizontal cylinder 33 is started, and the output end of the horizontal cylinder 33 drives the top plate 16 to move toward the rectangular frame, and then the top plate 16 is moved downward to align the four rotating cylinders 17 with the top ends of the four Y-axis brackets 6 respectively;

[0071] At this time, the fixed motor 34 is started, as shown in the attached Fig.11As shown, the output end of the fixed motor 34 drives the starting gear 36 to rotate clockwise through the rotating shaft 35, and because the starting gear 36 is meshed with the rotating ring gear 38, the rotating ring gear 38 is rotated counterclockwise in the limiting circular groove 37, and because the rotating ring gear 38 is meshed with the four adjusting gears 39 at the same time, the four adjusting gears 39 are rotated clockwise at the same time, and the four adjusting gears 39 drive the four rotating cylinders 17 to rotate clockwise, so that the four rotating cylinders 17 are screwed into the inner walls of the top ends of the four Y-axis brackets 6, and the top flat plate 16 is connected to the rectangular frame;

[0072] Then, the top plate 16 and the rectangular frame are moved to the top of the bottom plate 8 by the vertical cylinder 31 and the horizontal cylinder 33, and then the top plate 16 and the rectangular frame are moved downward to allow the nine bottom protrusions 9 to enter the bottom ends of the nine Y-axis brackets 6. During the downward movement of the top plate 16, the two blocking plates 57 are abutted against a mounting truss 50, so that the two blocking plates 57 are moved to the top of the vertical slide rail 56. At this time, the third push cylinder 48 is started to drive the X-shaped reinforcement bracket 18 to move toward the rectangular frame through the mounting truss 50. , so that the two X-shaped reinforcement brackets 18 are respectively against the left and right ends of the rectangular frame, and at the same time, the two rotating arc plates 54 at the top of an X-shaped reinforcement bracket 18 are respectively against the two rotating cylinders 17, and the two fixed arc plates 52 at the bottom end of an X-shaped reinforcement bracket 18 are respectively against the two bottom end protrusions 9, so as to strengthen and fix the left and right ends of the rectangular frame, and when an installation truss 50 and an X-shaped reinforcement bracket 18 move toward the rectangular frame, the two blocking plates 57 lose the state of being against each other, so that the two blocking plates 57 move downward to the bottom end of the vertical slide rail 56, as shown in the attached figure Figure 7 As shown, the two blocking plates 57 block the movement direction of one mounting truss 50 toward the side end plate 10, and at the same time, the movement direction of one mounting truss 50 toward the rectangular frame is blocked, thereby locking the two X-shaped reinforcement brackets 18;

[0073] Then rotate the front plate 13 to a vertical state, as shown in the attached Figure 5 As shown, the two limit long blocks 14 are abutted against the left and right ends of the rectangular frame, and the first push cylinder 42 and the second push cylinder 46 are started, so that the nine rear end protrusions 12 enter the rear ends of the nine Z-axis brackets 7, and the nine front end protrusions 15 enter the front ends of the nine Z-axis brackets 7, and the rectangular frame is further fixed to facilitate the subsequent transportation of the rectangular frame;

[0074] If the rectangular frame needs to be disassembled, a movable bracket 30 and two blocking plates 57 are moved upward by the vertical cylinder 31, so that the two blocking plates 57 are away from a mounting truss 50 to release the lock of the two X-shaped reinforcing brackets 18. At the same time, the movable bracket 30 drives the top plate 16 and the rectangular frame to move upward, so that the top end of the Y-axial bracket 6 pushes the rotating arc plate 54 to deflect upward and away from the rotating cylinder 17, and the bottom end of the Y-axial bracket 6 moves upward away from the bottom end protrusion 9 to move the rectangular frame to above the bottom plate 11, and then the front end plate 13 is rotated to a horizontal state, and the rectangular frame is placed between the two limit long blocks 14 by the vertical cylinder 31 and the horizontal cylinder 33, and then the four rotating cylinders 17 are rotated out of the top inner walls of the four Y-axial brackets 6 to disconnect the connection between the top plate 16 and the rectangular frame.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting and unloading device for a support transport vehicle, comprising a transport vehicle body (1), wherein the transport vehicle body (1) is provided with a rectangular frame consisting of nine X-axis supports (5), nine Y-axis supports (6) and nine Z-axis supports (7), characterized in that: The transport vehicle body (1) is provided with: A supporting plate (2), an iron shaft (3) and a rotating wheel (4), wherein two supporting plates (2) are mounted on the transport vehicle body (1), and the two rotating wheels (4) are rotatably mounted on the two supporting plates (2) via two iron shafts (3); a bottom plate (8), a bottom protrusion (9), a side plate (10), a bottom plate (11) and a rear end protrusion (12), wherein one bottom plate (8), two side plates (10) and one bottom plate (11) form a U-shaped fixed frame, and nine bottom protrusions (9) and nine rear end protrusions (12) are respectively arranged on one bottom plate (8) and one bottom plate (11); A front end plate (13), a position limiting long block (14) and a front end protrusion (15), wherein two of the position limiting long blocks (14) and nine of the front end protrusions (15) are arranged on one front end plate (13); a top end plate (16), a rotating cylinder (17) and an X-shaped reinforcing bracket (18), wherein four of the rotating cylinders (17) are rotatably mounted on one of the top end plates (16), and two of the X-shaped reinforcing brackets (18) are respectively arranged on two side end plates (10); a rotating mechanism, an adjusting mechanism, a connecting mechanism and an ejecting mechanism, wherein the rotating mechanism, the adjusting mechanism, the connecting mechanism and the ejecting mechanism are all arranged above the supporting plate (2); The push-out mechanism comprises: A first guide groove (40), a first mounting plate (41), a first push cylinder (42) and a first through hole (43), wherein one of the first guide grooves (40) is formed at the top inner wall of a bottom plate (11), one of the first mounting plates (41) is slidably mounted in one of the first guide grooves (40), one of the first push cylinders (42) is fixedly connected to the rear inner wall of a bottom plate (11), and an output end of the first push cylinder (42) is fixedly connected to one of the first mounting plates (41), nine of the first through holes (43) are formed at a straight line and equidistantly through the front end of a bottom plate (11), and nine of the rear end protrusions (12) are slidably mounted in the nine first through holes (43) respectively; A second guide groove (44), a second mounting plate (45), a second push cylinder (46) and a second through hole (47), wherein one of the second guide grooves (44) is formed on the top inner wall of a front plate (13), one of the second mounting plates (45) is slidably mounted in one of the second guide grooves (44), one of the second push cylinders (46) is fixedly mounted on the front inner wall of a front plate (13), and an output end of one of the second push cylinders (46) is fixedly connected to one of the second mounting plates (45), nine of the second through holes (47) are formed at a straight line and equidistantly through the rear end of one of the front plates (13), and nine of the front protrusions (15) are slidably mounted in the nine second through holes (47); The push-out mechanism also includes: A third push cylinder (48), a third guide groove (49), a mounting truss (50) and an X-shaped through groove (51), wherein the third push cylinder (48) is fixedly mounted on the inner wall of a side end plate (10), a group of the third guide grooves (49) are respectively opened on the front and rear inner walls of a side end plate (10), a mounting truss (50) is slidably mounted in a group of the third guide grooves (49), an X-shaped through groove (51) is penetrated and opened on a side end plate (10), an X-shaped reinforcing bracket (18) is slidably mounted on an X-shaped through groove (51), and the middle end of an X-shaped reinforcing bracket (18) is fixedly connected to the middle end of an mounting truss (50); A fixed arc plate (52), a driving shaft (53), a rotating arc plate (54), a reset torsion spring (55), a vertical slide rail (56) and a blocking plate (57), wherein the two fixed arc plates (52) are respectively fixedly connected to the bottom ends of an X-shaped reinforcement bracket (18), the two driving shafts (53) are respectively rotatably mounted on the top ends of an X-shaped reinforcement bracket (18), the two rotating arc plates (54) are respectively fixedly sleeved on the two driving shafts (53), the two reset torsion springs (55) are respectively fixedly sleeved on the two driving shafts (53), the two vertical slide rails (56) are symmetrically fixedly connected to the middle end of a movable bracket (30), the two blocking plates (57) are respectively slidably sleeved in the two vertical slide rails (56), and the two blocking plates (57) are both movably opposed to a mounting truss (50).

2. The lifting and unloading device of a support transport vehicle according to claim 1, characterized in that: The rotating mechanism comprises: A rotating shaft (19), an L-shaped connecting rod (20), an avoidance groove (21) and a driving motor (22), wherein the rotating shaft (19) is rotatably installed inside a bottom plate (8) and two side plates (10), two ends of the L-shaped connecting rod (20) are respectively fixedly connected to the middle end of a rotating shaft (19) and the bottom end of a front plate (13), the avoidance groove (21) is opened at the bottom end of a bottom plate (8), and the driving motor (22) is fixedly installed on the inner wall of the left side plate (10), and the output end of the driving motor (22) is fixedly connected to one end of the rotating shaft (19) located inside the left side plate (10); A driving gear (23), a vertical slide groove (24), a connecting rod (25), a driven rack (26), an arc-shaped clamp (27) and a magnet block (28), wherein the two driving gears (23) are respectively key-connected to the two ends of the rotating shaft (19) located inside the two side end plates (10), the two vertical slide grooves (24) are respectively penetrated and opened at the front ends of the two side end plates (10), the two connecting rods (25) are respectively penetrated and slidably sleeved in the two vertical slide grooves (24), and the two driven racks (26) are respectively key-connected to the two ends of the rotating shaft (19) located inside the two side end plates (10). The movable rack (26) is respectively fixedly connected to one end of the two connecting long rods (25) located inside the side end plate (10), and the driven rack (26) is meshedly connected to the driving gear (23). The two arc-shaped clamps (27) are respectively fixedly connected to one end of the two connecting long rods (25) located outside the side end plate (10), and the two arc-shaped clamps (27) are respectively aligned with one end of the two iron shafts (3) in the upper and lower directions. The two groups of magnet blocks (28) are respectively fixedly connected to the inner arc ends of the two arc-shaped clamps (27).

3. The lifting and unloading device of a support transport vehicle according to claim 2, characterized in that: The regulating mechanism comprises: A vertical guide groove (29), a movable bracket (30), a vertical cylinder (31), a transverse slide rail (32) and a transverse cylinder (33), wherein two groups of the vertical guide grooves (29) are respectively opened on the inner walls of the two side end plates (10), the two movable brackets (30) are respectively slidably mounted in the two vertical guide grooves (29), the two groups of vertical cylinders (31) are respectively fixedly mounted inside the two side end plates (10), and the output end of one group of vertical cylinders (31) is fixedly connected to the middle end of a movable bracket (30), the two transverse slide rails (32) are respectively fixedly connected to the upper ends of the two movable brackets (30), the two transverse cylinders (33) are respectively fixedly mounted in the two transverse slide rails (32), the output ends of the two transverse cylinders (33) are respectively fixedly connected to the left and right ends of a top plate (16), and the left and right ends of a top plate (16) are respectively slidably mounted in the two transverse slide rails (32).

4. The lifting and unloading device of a support transport vehicle according to claim 3, characterized in that: The connecting mechanism comprises: A fixed motor (34), a rotating shaft (35), a starting gear (36), a limiting circular groove (37), a rotating ring gear (38) and an adjusting gear (39), wherein one of the fixed motors (34) is fixedly connected to the inside of a top plate (16), one of the rotating shafts (35) is rotatably mounted inside of a top plate (16), and the rotating shaft (35) is fixedly connected to the output end of the fixed motor (34), one of the starting gears (36) is key-connected to the rotating shaft (35), one of the limiting circular grooves (37) is opened at the bottom inner wall of the top plate (16), one of the rotating ring gears (38) is slidably sleeved in the limiting circular groove (37), and one of the starting gears (36) is meshedly connected to one of the rotating ring gears (38), and four of the adjusting gears (39) are respectively key-connected to one end of four rotating cylinders (17) located inside of a top plate (16), and each of the four adjusting gears (39) is meshedly connected to one of the rotating ring gears (38).

5. A method for using the lifting and unloading device of a support transport vehicle as claimed in claim 4, characterized in that: The method of use comprises the following steps: Step S1: First, the front plate (13) is rotated from a vertical state to a horizontal state until the front plate (13) is in a horizontal state and abuts against the two rotating wheels (4), and at this time, the arc-shaped clamp (27) moves downward and abuts against one end of the two iron shafts (3), and at the same time, the magnet block (28) of the arc-shaped clamp (27) is used to magnetically adsorb the iron shafts (3) to prevent the two rotating wheels (4) from rotating, thereby allowing the two rotating wheels (4) to support the front plate (13) in a horizontal state; Step S2: Then, the rectangular frame is placed between the two limit long blocks (14) to limit the left and right ends of the rectangular frame, and the vertical cylinder (31) and the horizontal cylinder (33) are started to move the four rotating cylinders (17) to align with the top ends of the four Y-axis brackets (6). At this time, the fixed motor (34) is started to screw the four rotating cylinders (17) into the inner walls of the top ends of the four Y-axis brackets (6) to connect the top plate (16) to the rectangular frame; Step S3: The nine bottom end protrusions (9) are then inserted into the bottom ends of the nine Y-axis brackets (6) through the vertical cylinder (31) and the horizontal cylinder (33). At this time, the third pushing cylinder (48) is started to make the two X-shaped reinforcement brackets (18) respectively abut against the left and right ends of the rectangular frame, and the two rotating arc plates (54) at the top end of an X-shaped reinforcement bracket (18) are respectively abutted against the two rotating cylinders (17), and the two fixed arc plates (52) at the bottom end of an X-shaped reinforcement bracket (18) are respectively abutted against the two bottom end protrusions (9), so as to strengthen and fix the left and right ends of the rectangular frame; Step S4: Then, the front plate (13) is driven to rotate to a vertical state, so that the two limit long blocks (14) are against the left and right ends of the rectangular frame, and the first push cylinder (42) and the second push cylinder (46) are started to allow the nine rear end protrusions (12) to enter the rear ends of the nine Z-axis brackets (7), and the nine front end protrusions (15) to enter the front ends of the nine Z-axis brackets (7), and further fix the rectangular frame to facilitate the subsequent transportation of the rectangular frame; Step S5: If the rectangular frame needs to be disassembled, the top plate (16) and the rectangular frame are driven to move upward, so that the top end of the Y-axis bracket (6) pushes the rotating arc plate (54) to deflect upward and away from the rotating cylinder (17), and the bottom end of the Y-axis bracket (6) moves upward away from the bottom end protrusion (9), and then the front plate (13) is rotated to a horizontal state, and the rectangular frame is placed between the two limit long blocks (14), and then the four rotating cylinders (17) are rotated out to disconnect the connection between the top plate (16) and the rectangular frame.

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