Plate lifting device and method with adjustable lifting height

Abstract

The present invention discloses a plate lifting device and method with adjustable lifting height, which relates to the field of plate lifting devices with adjustable lifting height, comprising a movable base, a distance adjusting mechanism and two groups of plate lifting mechanisms, wherein the distance adjusting mechanism and the two groups of plate lifting mechanisms are both arranged at the top of the movable base, the two groups of plate lifting mechanisms are symmetrically arranged, and the distance adjusting mechanism can drive the two groups of plate lifting mechanisms to move synchronously in opposite directions, so as to lift plates of different sizes, and has strong applicability; the plate lifting mechanism comprises two symmetrically arranged vertical poles, a lifting roller, a tensioning roller and a fixed roller are arranged between the two vertical poles from top to bottom in sequence, a lifting belt is arranged on the outside of the fixed roller, the lifting roller and the tensioning roller, the lifting roller can move along the vertical pole, the tensioning roller can tension the lifting belt when the lifting roller moves, and a plurality of convex strips are arranged on the outer wall of the lifting belt in parallel and equidistantly, so that the present invention can be applicable to the requirements of lifting plates of different heights.

Description

Technical Field

[0001] The present invention relates to the field of industrial production, and in particular to a plate lifting device and method with adjustable lifting height. Background Art

[0002] Various types of panels are needed in industrial production and construction. During the production and use of panels, the panels often need to be lifted, such as lifting unprocessed panels to specific processing machinery for further processing, or lifting building panels to specific floors. In the current method of lifting panels, for panels with larger mass and volume, lifting devices are often used to lift the panels, and for panels with smaller mass and volume, manpower is generally used to lift the panels. There are the following disadvantages in using a lifting device to lift panels: the lifting device is large in size, inconvenient to move, and cannot be used flexibly. Moreover, the lifting device can only lift a small amount of panels at a time, and the operation needs to be repeated after completion, which is time-consuming and energy-intensive. Lifting panels by manpower is inefficient and even more inconvenient.

[0003] The patent document with publication number CN215401505U discloses a plate lifting device with adjustable lifting height for industrial production, which is provided with two vertical plates on both sides of the lifting mechanism, rotating rollers are provided at the top and bottom between the two vertical plates on the same side, tracks are provided on the two rotating rollers on the same side, and multiple plate storage convex strips are provided at equal intervals on the outside of the tracks, linkage wheels are provided at the axis of the two top rotating rollers, linkage belts are provided between the two linkage wheels, and the rotating rollers are connected to the motor. The setting of the lifting mechanism can lift multiple plates at the same time, reduce the time used for lifting plates, improve production efficiency, and save energy consumption. However, the patent has the following shortcomings:

[0004] 1. The plate that can be lifted by the mechanism needs to meet the following conditions: the width is less than the distance between the two tracks and greater than the distance between the two corresponding convex strips on the two tracks, and the tracks of the mechanism cannot move, and the distances between the two tracks and the two convex strips cannot be changed, so the size of the plate that can be lifted by the device is fixed, and it cannot be applied to most plates, and has poor applicability;

[0005] 2. The height to which the mechanism can lift the plate is determined by the height of the top of the track, and the rotating roller that determines the height of the top of the track cannot be adjusted, so the height of the track is fixed and the lifting height of the plate cannot be changed. This device cannot adapt to most usage scenarios.

[0006] Therefore, the present application provides a plate lifting device with adjustable lifting height to meet the needs. Summary of the invention

[0007] The purpose of the present application is to provide a plate lifting device with adjustable lifting height, wherein a distance adjusting mechanism and two sets of plate lifting mechanisms are arranged at the top of a movable base, the two sets of plate lifting mechanisms are symmetrically arranged, and plates can be placed therein for lifting, the distance adjusting mechanism can drive the two sets of plate lifting mechanisms to move synchronously in opposite directions, thereby adjusting the distance between the two sets of plate lifting mechanisms to adapt to plates of different sizes, therefore, the present invention can lift plates of different sizes; the plate lifting mechanism is a lifting roller, a tensioning roller and a fixed roller arranged in sequence from top to bottom between two symmetrical vertical poles, the lifting roller, the tensioning roller and the fixed roller are externally sleeved with a lifting belt, a convex strip is arranged on the outer wall of the lifting belt, the lifting belt is driven by driving each roller, and the plate is lifted in cooperation with the convex strip, since the lifting roller can move along the vertical pole, the tensioning roller can tension the lifting belt when the lifting roller moves, therefore, the height of the top of the lifting belt is adjustable, that is, the discharge height is adjustable, so that the present invention can be applicable to the lifting requirements of plates of different heights.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a plate lifting device with adjustable lifting height, comprising a movable base, a distance adjusting mechanism and two groups of plate lifting mechanisms, the distance adjusting mechanism and the two groups of plate lifting mechanisms are both arranged at the top of the movable base, the two groups of plate lifting mechanisms are symmetrically arranged, and the distance adjusting mechanism can drive the two groups of plate lifting mechanisms to move synchronously in opposite directions; the plate lifting mechanism comprises two symmetrically arranged vertical poles, between which a lifting roller, a tensioning roller and a fixed roller are arranged in sequence from top to bottom, the fixed roller, the lifting roller and the tensioning roller are externally sleeved with a lifting belt, the lifting roller can move along the vertical pole, the tensioning roller can tension the lifting belt when the lifting roller moves, and the outer surface of the lifting belt is parallel and equidistantly provided with a plurality of convex strips; a driving mechanism is provided on one side of the two groups of plate lifting mechanisms, and the driving mechanism can drive the two fixed rollers in the two groups of lifting mechanisms to rotate synchronously in opposite directions.

[0009] Preferably, the distance adjusting mechanism includes two movable plates, two first guide rods, a bidirectional threaded rod and a first motor. Two grooves are provided at the top of the movable base. The two movable plates are respectively placed in the two grooves. The two first guide rods are arranged parallel to the bidirectional threaded rod, and the two first guide rods and the bidirectional threaded rod are inserted through the two movable plates. The two movable plates are respectively threadedly matched with the two ends of the bidirectional threaded rod, the output end of the first motor is connected to one end of the bidirectional threaded rod, and each group of the vertical rods is respectively fixedly mounted on the top of a movable plate.

[0010] Preferably, a first slide rail, a first slider and a first strip hole are provided on the top of the vertical rod, the first slider is slidably matched with the first slide rail, and the rotating shaft of the lifting roller is inserted through the first strip hole and is rotatably connected with the first slider.

[0011] Preferably, a transverse plate is provided in the middle of the vertical rod, a second slider is slidably provided on the outer wall of the transverse plate, a second strip hole is provided in the middle of the transverse plate, the rotating shaft of the tensioning roller is inserted through the second strip hole and is rotatably connected with the second slider, a second guide rod is provided on one side of the second slider, a first spring is sleeved on the second guide rod, a fixed block is provided on the outer wall of one end of the transverse plate, the second guide rod is inserted through the fixed block, and both ends of the first spring are fixedly connected to the second slider and the fixed block respectively.

[0012] Preferably, the driving mechanism includes a driving wheel, a changing wheel, a driven wheel and a second motor, the driving wheel and the changing wheel are both mounted on one of the vertical poles, and the driving wheel is coaxially fixedly connected to one of the fixed rollers, a first gear is provided on the rotating shaft of the driving wheel, a second gear is provided on the rotating shaft of the changing wheel, and the second gear is meshed with the first gear, the driven wheel is mounted on the other vertical pole, and the driven wheel is coaxially fixedly connected to the other fixed roller, a first belt is sleeved on the changing wheel and the driven wheel, the second motor is mounted on one of the movable plates, and a second belt is sleeved on the output end of the second motor and the driving wheel.

[0013] Preferably, the driving mechanism also includes a belt tensioning assembly, the belt tensioning assembly includes a vertical plate and a tensioning wheel, the vertical plate is installed on the top of the movable base, the vertical plate is provided with a second slide rail, the second slide rail is provided with a third slider matching therewith, the tensioning wheel is rotatably installed on the third slider, and the tensioning wheel is close to the inner surface of the first belt, the middle part of the second slide rail is provided with a groove, the third guide rod is installed in the groove, the third guide rod is inserted through the third slider, and the third guide rod is sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to the bottom end of the inner wall of the groove and the lower surface of the third slider.

[0014] Preferably, a bracket is provided at the top of the movable base, and the top plate of the bracket is placed directly above the plate lifting mechanism. A cylinder is provided at the top of the top plate of the bracket, and the telescopic end of the cylinder passes through the top plate of the bracket and a discharging mechanism is provided at the telescopic end of the cylinder. Telescopic rods are provided on both sides of the discharging mechanism and between the multiple first sliders.

[0015] Preferably, the discharging mechanism includes an outer shell, a lifting seat and a shock-absorbing suspension rod, a first trough body is opened on the lower side of the outer shell, the lifting seat is slidably installed in the first trough body, a first conveyor belt is provided at the bottom of the lifting seat, the shock-absorbing suspension rod is installed at the top of the trough body of the outer shell, and the telescopic end of the shock-absorbing suspension rod is connected to the top of the lifting seat.

[0016] Preferably, a feeding mechanism is provided at the top of the movable base, and the feeding mechanism includes a mold frame, a second conveyor belt and two baffles. The second conveyor belt is arranged at the bottom of the mold frame, and a second trough body is opened on the lower side of the mold frame. Two groups of third slide rails are symmetrically provided at the top of the second trough body. The third slide rail is provided with a fourth slider that slides with the third slide rail. The two baffles are respectively installed on the corresponding fourth sliders, and a connecting rod is provided between one end of the two baffles and the corresponding vertical pole.

[0017] In summary, the technical effects and advantages of the present invention are as follows:

[0018] 1. In the present invention, a distance adjustment mechanism and two sets of plate lifting mechanisms are arranged at the top of the movable base. The two sets of plate lifting mechanisms are symmetrically arranged, and the plates can be placed therein for lifting. The distance adjustment mechanism can drive the two sets of plate lifting mechanisms to move synchronously in opposite directions, thereby adjusting the distance between the two sets of plate lifting mechanisms to adapt to plates of different sizes. Therefore, the present invention can lift plates of different sizes and has strong applicability.

[0019] 2. In the present invention, the plate lifting mechanism is a lifting roller, a tensioning roller and a fixed roller arranged in sequence from top to bottom between two symmetrical vertical poles. The lifting roller, the tensioning roller and the fixed roller are covered with a lifting belt on the outside. A convex strip is arranged on the outer wall of the lifting belt. The lifting belt is driven by driving each roller to lift the plate in cooperation with the convex strip. Since the lifting roller can move along the vertical pole, the tensioning roller can tension the lifting belt when the lifting roller moves. Therefore, the height of the top end of the lifting belt is adjustable, that is, the discharge height is adjustable, so that the present invention can be applied to the requirements of lifting plates of different heights, further increasing the applicability of use.

[0020] 3. In the present invention, the first slider driving the lifting roller is connected to the discharging mechanism, and the discharging mechanism is connected to the cylinder, so that when the cylinder drives the lifting roller to adjust the height, the discharging mechanism always keeps consistent with the height of the lifting roller to cooperate in adjusting the discharging height. In addition, in the discharging mechanism, the lifting seat is placed in the groove body of the outer shell and is slidably connected thereto, and a first conveyor belt is provided at the bottom of the lifting seat, and a shock-absorbing suspension rod is installed at the top of the groove body of the outer shell and is connected to the lifting seat. When the plate is lifted to contact with the first conveyor belt, the lifting seat compresses the shock-absorbing suspension rod and moves upward, and the first conveyor belt always fits the plate and moves it laterally, so that the present invention can complete the discharging without stopping the plate lifting structure, thereby increasing the continuity of the overall operation, eliminating the need for repeated starting, improving work efficiency, and reducing work energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0023] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 3 It is one of the schematic diagrams of the three-dimensional cutaway structure of the present invention;

[0025] Figure 4 This is the second schematic diagram of the three-dimensional cross-section structure of the present invention;

[0026] Figure 5 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0027] Figure 6 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0028] Figure 7 For the present invention Figure 3 The enlarged structural diagram at C in the middle;

[0029] Figure 8 It is a structural schematic diagram of the belt tensioning assembly of the present invention;

[0030] Fig. 9 This is the third schematic diagram of the three-dimensional structure of the present invention;

[0031] Fig.10 This is the third schematic diagram of the three-dimensional cutaway structure of the present invention;

[0032] Fig.11 It is a schematic diagram of the structure of the discharging mechanism of the present invention.

[0033] In the figure: 1. moving base; 11. groove; 2. distance adjustment mechanism; 21. moving block; 22. first guide rod; 23. bidirectional threaded rod; 24. first motor; 3. plate lifting mechanism; 31. vertical rod; 32. fixed roller; 33. lifting roller; 34. tensioning roller; 35. lifting belt; 36. convex strip; 311. first slide rail; 312. first slider; 313. first strip hole; 314. transverse plate; 315. second slider; 316. second strip hole; 317. fixed block; 318. second guide rod; 319. first spring; 4. bracket; 5. cylinder; 6. discharging mechanism; 61. shell; 62. Lifting seat; 63. First conveyor belt; 64. Shock-absorbing suspension rod; 7. Driving mechanism; 71. Driving wheel; 72. Changing wheel; 73. Driven wheel; 74. Second motor; 75. First gear; 76. Second gear; 77. First belt; 78. Second belt; 79. Belt tensioning assembly; 791. Vertical plate; 792. Second slide rail; 793. Third slider; 794. Tensioning wheel; 795. Slot; 796. Third guide rod; 797. Second spring; 8. Feeding mechanism; 81. Jagged frame; 82. Second conveyor belt; 83. Third slide rail; 84. Fourth slider; 85. Baffle; 86. Connecting rod. DETAILED DESCRIPTION

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

[0035] Example: Reference Figure 1-3The plate lifting device shown in the figure has an adjustable lifting height, comprising a movable base 1, a distance adjusting mechanism 2 and two sets of plate lifting mechanisms 3, wherein the distance adjusting mechanism 2 and the two sets of plate lifting mechanisms 3 are both arranged at the top of the movable base 1, the two sets of plate lifting mechanisms 3 are symmetrically arranged, and the distance adjusting mechanism 2 can drive the two sets of plate lifting mechanisms 3 to move synchronously in opposite directions, so that the distance between the two sets of plate lifting mechanisms 3 is adjustable, which is convenient for placing plates of different sizes between the two sets of plate lifting mechanisms 3; the plate lifting mechanism 3 comprises two symmetrically arranged vertical rods 31, between which a lifting roller 33, a tensioning roller 34 and a fixed roller 32 are arranged in sequence from top to bottom, and the fixed roller 32, the lifting roller 33 and the tensioning roller 34 are arranged on the outside A lifting belt 35 is sleeved, and the lifting roller 33 can move along the vertical rod 31. The tensioning roller 34 can tension the lifting belt 35 when the lifting roller 33 moves. The outer surface of the lifting belt 35 is provided with a plurality of parallel and equidistant convex strips 36, and the convex strips 36 are provided with a plurality of rotatable balls to reduce the friction between the convex strips 36 and the plate, so as to facilitate feeding and discharging. By changing the height of the lifting roller 33, the height of the top of the lifting belt 35 can be adjusted, thereby adjusting the discharging height; a driving mechanism 7 is provided on one side of the two groups of the plate lifting mechanism 3, and the driving mechanism 7 can drive the two fixed rollers 32 in the two groups of lifting mechanisms 3 to rotate synchronously in opposite directions, thereby driving the two lifting belts 35 to rotate synchronously in opposite directions, and cooperate with the convex strips 36 to complete the lifting of the plate.

[0036] Further, refer to Figure 4 As shown, the distance adjustment mechanism 2 includes two movable plates 21, two first guide rods 22, a bidirectional threaded rod 23 and a first motor 24. Here, the bidirectional threaded rod 23 refers to a threaded rod with threads at both ends, the pitch of the threads is the same, and the directions are opposite. The top of the movable base 1 is provided with two grooves 11, and the two movable plates 21 are respectively placed in the two grooves 11. The two first guide rods 22 are arranged in parallel with the bidirectional threaded rod 23, and the two first guide rods 22 and the bidirectional threaded rod 23 are inserted through the two movable plates 21. The two movable plates 21 are respectively matched with the threads at both ends of the bidirectional threaded rod 23. The output end of the first motor 24 is connected to one end of the bidirectional threaded rod 23. The bidirectional threaded rod 23 is driven to rotate by the first motor 24, so that the two movable plates 21 can be driven to move synchronously in opposite directions. Each group of the vertical rods 31 is respectively fixedly mounted on the top of a movable plate 21, so as to facilitate the two groups of plate lifting mechanisms 3 to move synchronously in opposite directions.

[0037] Further, refer to Figure 5-6As shown, a first slide rail 311, a first slider 312 and a first strip hole 313 are provided on the top of the vertical rod 31. The first slider 312 is slidably matched with the first slide rail 311. The rotating shaft of the lifting roller 33 is inserted through the first strip hole 313 and is rotatably connected with the first slider 312. By moving the first slider 312, the lifting roller 33 can be driven to complete height adjustment. A transverse plate 314 is provided in the middle of the vertical rod 31. A second slider 315 is slidably provided on the outer wall of the transverse plate 314. A second strip hole 316 is provided in the middle of the transverse plate 314. The rotating shaft of the tensioning roller 34 is inserted through the second strip hole 316 and is rotatably connected with the second slider 315. A second guide rod 318 is provided on one side of the second slider 315. The second guide rod 318 is sleeved with a first spring 319, and a fixed block 317 is provided on the outer wall of one end of the transverse plate 314. The second guide rod 318 is inserted through the fixed block 317. The two ends of the first spring 319 are fixedly connected to the second slider 315 and the fixed block 317 respectively. The first spring 319 always provides elastic force for the tensioning roller 34 to expand outward, so that the tensioning roller 34 can always tighten the lifting belt 35 when the height of the lifting roller 33 is adjusted. If the gravity of the plate material causes a pulling force on the lifting belt 35, causing the tensioning roller 34 to shake easily when the plate material is lifted, a locking structure can be set for the second slider 315. Here, only the situation that the elastic force of the first spring 319 is much greater than the dead weight of the plate is considered, so there is no need to set a locking structure.

[0038] Further, refer to Figure 7-8As shown, the driving mechanism 7 includes a driving wheel 71, a direction-changing wheel 72, a driven wheel 73 and a second motor 74. The driving wheel 71 and the direction-changing wheel 72 are both mounted on one of the vertical poles 31, and the driving wheel 71 is coaxially fixedly connected with one of the fixed rollers 32. A first gear 75 is provided on the rotating shaft of the driving wheel 71, and a second gear 76 is provided on the rotating shaft of the direction-changing wheel 72, and the second gear 76 is meshed with the first gear 75. The driven wheel 73 is mounted on the other vertical pole 31, and the driven wheel 73 is meshed with the first gear 75. Another fixed roller 32 is coaxially fixedly connected, a first belt 77 is sleeved on the direction-changing wheel 72 and the driven wheel 73, the second motor 74 is installed on one of the moving plates 21, and a second belt 78 is sleeved on the output end of the second motor 74 and the driving wheel 71. The second motor 74 drives the driving wheel 71 to rotate counterclockwise, and the first gear 75 cooperates with the second gear 76 to drive the direction-changing wheel 72 to rotate clockwise, and then the first belt 77 drives the driven wheel 73 to rotate clockwise. Through the above cooperation, the two fixed rollers 32 drives the two lifting belts to rotate synchronously in opposite directions to lift the plate; the driving mechanism 7 also includes a belt tensioning assembly 79, which includes a vertical plate 791 and a tensioning wheel 794. The vertical plate 791 is installed on the top of the mobile base 1, and the vertical plate 791 is provided with a second slide rail 792. The second slide rail 792 is provided with a third slider 793 matched therewith, and the tensioning wheel 794 is rotatably installed on the third slider 793, and the tensioning wheel 794 is close to the inner surface of the first belt 77. A slot 795 is provided in the middle of the second slide rail 792, and a third guide rod 796 is installed in the slot 795. The third guide rod 796 passes through the third slider 793, and a second spring 797 is sleeved on the third guide rod 796. The two ends of the second spring 797 are respectively fixedly connected to the bottom end of the inner wall of the slot 795 and the lower surface of the third slider 793. The elastic force of the second spring 797 is utilized to make the tensioning wheel 794 pull the first belt 77 outward to avoid affecting the normal operation of the driving mechanism 7 when the two sets of plate lifting mechanisms 3 adjust the distance.

[0039] Further, refer to Fig. 9 As shown, a bracket 4 is provided at the top of the movable base 1, and the top plate of the bracket 4 is placed directly above the plate lifting mechanism 3. A cylinder 5 is provided at the top of the top plate of the bracket 4, and the telescopic end of the cylinder 5 passes through the top plate of the bracket 4 and the telescopic end of the cylinder 5 is provided with a discharge mechanism 6. Telescopic rods 9 are provided between the two sides of the discharge mechanism 6 and the multiple first sliders 312, so that when the cylinder 5 drives the lifting roller 33 to adjust the height, the discharge mechanism 6 always keeps consistent with the height of the lifting roller 33 to cooperate with the adjustment of the discharge height. The telescopic rod 9 is provided to ensure that the two sets of plate lifting mechanisms 3 will not affect the connection between the discharge mechanism 6 and the first slider 312 when adjusting the distance.

[0040] Further, refer to Fig.10 As shown, the discharging mechanism 6 includes an outer shell 61, a lifting seat 62 and a shock-absorbing suspension rod 64. A first trough body is opened on the lower side of the outer shell 61, and the lifting seat 62 is slidably installed in the first trough body. A first conveyor belt 63 is provided at the bottom of the lifting seat 62. The shock-absorbing suspension rod 64 is installed at the top of the trough body of the outer shell 61. The telescopic end of the shock-absorbing suspension rod 64 is connected to the top of the lifting seat 62. When the plate is lifted upward to contact the first conveyor belt 63, the first conveyor belt 63 drives the plate to move horizontally for discharging. At the same time, the lifting seat 62 moves upward and compresses the shock-absorbing suspension rod 64. The discharging can be completed while the plate continues to rise. After a plate is discharged, the lifting seat 62 is reset and the above action is repeated, so that the plate lifting mechanism 3 can complete the discharging without stopping, thereby increasing the continuity of the overall operation, eliminating the need for repeated starting, improving work efficiency, and reducing work energy consumption.

[0041] Further, refer to Fig.11 As shown, a feeding mechanism 8 is provided at the top of the mobile base 1, and the feeding mechanism 8 includes a jig 81, a second conveyor belt 82 and two baffles 85. The second conveyor belt 82 is arranged at the bottom of the jig 81, and the plate is placed on the second conveyor belt 82, and the second conveyor belt 82 drives the plate to be fed; a second trough body is opened at the lower side of the jig 81, and two groups of third slide rails 83 are symmetrically arranged at the top of the second trough body, and the third slide rails 83 are provided with fourth sliders 84 that slide with them, and the two baffles 85 are respectively installed on the corresponding fourth sliders 84, and a connecting rod 86 is provided between one end of the two baffles 85 and the corresponding vertical rod 31. The baffle 85 is used to limit the plate so that the moving direction of the plate is toward between the two groups of plate lifting mechanisms 3. When adjusting the distance between the two groups of plate lifting mechanisms 3, the two baffles 85 are driven to move along the third slide rail 83 by the connecting rod 86, so that the distance between the two baffles 85 is always consistent with the distance between the two groups of plate lifting mechanisms 3, so as to ensure the accurate feeding of the plate.

[0042] Directions:

[0043] First, the widths of the two plate lifting mechanisms 3 are adjusted according to the width of the plate to be lifted, and the first motor 24 is started to drive the bidirectional threaded rod 23 to rotate, so that the two movable plates 21 move along the first guide rod 22, driving the distance between the two sets of plate lifting mechanisms 3 to change until the distance between the two sets of plate lifting mechanisms 3 corresponds to the width of the plate;

[0044] Subsequently, the height of the lifting roller 33 is adjusted according to the height to be lifted of the plate, and the cylinder 5 is started to drive the discharging mechanism 6 to move longitudinally, thereby driving the first slider 312 to move up and down along the first slide rail 311, and the lifting roller 33 moves up and down accordingly, and is adjusted to a suitable height. When the lifting roller 33 moves, the tensioning roller 34, under the elastic force of the first spring, adaptively tightens the lifting belt 35 to avoid affecting the lifting of the plate;

[0045] Finally, the first conveyor belt 63, the second conveyor belt 82 and the second motor 74 are started at the same time. The second motor 74 drives the driving mechanism 7 to work, drives the two fixed rollers 32 to rotate, and the two lifting belts 35 rotate accordingly, and continuously places the plate on the second conveyor belt 83. The second conveyor belt 83 transports the plate to between the two sets of plate lifting mechanisms 3. The two corresponding convex strips 36 on the two lifting belts 35 lift the two ends of the plate to lift the plate. When the plate is lifted to contact with the first conveyor belt 63, the lifting seat 62 compresses the shock-absorbing suspension rod 64 and moves upward, and the first conveyor belt 63 always fits the plate and moves it laterally, so that the present invention can complete the discharge without stopping the plate lifting structure, and this is repeated.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plate lifting device with adjustable lifting height, characterized in that: It comprises a movable base, a distance adjusting mechanism and two sets of plate lifting mechanisms, wherein the distance adjusting mechanism and the two sets of plate lifting mechanisms are both arranged at the top of the movable base, the two sets of plate lifting mechanisms are symmetrically arranged, and the distance adjusting mechanism can drive the two sets of plate lifting mechanisms to move synchronously in opposite directions; The plate lifting mechanism comprises two symmetrically arranged vertical poles, between which a lifting roller, a tensioning roller and a fixed roller are arranged in sequence from top to bottom, and the fixed roller, the lifting roller and the tensioning roller are covered with a lifting belt on their outer sides, the lifting roller can move along the vertical poles, the tensioning roller can tension the lifting belt when the lifting roller moves, and the outer surface of the lifting belt is provided with a plurality of convex strips in parallel and equidistantly. A driving mechanism is provided on one side of the two sets of plate lifting mechanisms, and the driving mechanism can drive the two fixed rollers in the two sets of lifting mechanisms to rotate synchronously in opposite directions; A transverse plate is provided in the middle of the vertical rod, a second slider is slidably provided on the outer wall of the transverse plate, a second strip hole is provided in the middle of the transverse plate, the rotating shaft of the tensioning roller passes through the second strip hole and is rotatably connected with the second slider, a second guide rod is provided on one side of the second slider, a first spring is sleeved on the second guide rod, a fixed block is provided on the outer wall of one end of the transverse plate, the second guide rod passes through the fixed block, and two ends of the first spring are fixedly connected to the second slider and the fixed block respectively; The driving mechanism includes a driving wheel, a direction-changing wheel, a driven wheel, a second motor and a belt tensioning assembly. The driving wheel and the direction-changing wheel are both mounted on one of the vertical poles, and the driving wheel is coaxially fixedly connected to one of the fixed rollers. A first gear is provided on the rotating shaft of the driving wheel, a second gear is provided on the rotating shaft of the direction-changing wheel, and the second gear is meshed with the first gear. The driven wheel is mounted on the other vertical pole, and the driven wheel is coaxially fixedly connected to the other fixed roller. A first belt is sleeved on the direction-changing wheel and the driven wheel. The belt tensioning assembly includes a vertical plate and a tensioning wheel, the vertical plate is installed on the top of the mobile base, the vertical plate is provided with a second slide rail, the second slide rail is provided with a third slider matching therewith, the tensioning wheel is rotatably installed on the third slider, and the tensioning wheel is close to the inner surface of the first belt, the middle part of the second slide rail is provided with a groove, the third guide rod is installed in the groove, the third guide rod is inserted through the third slider, and the third guide rod is sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to the bottom end of the inner wall of the groove and the lower surface of the third slider.

2. A plate lifting device with adjustable lifting height according to claim 1, characterized in that: The distance adjustment mechanism includes two movable plates, two first guide rods, a bidirectional threaded rod and a first motor. Two grooves are provided at the top of the movable base. The two movable plates are respectively placed in the two grooves. The two first guide rods are arranged in parallel with the bidirectional threaded rod, and the two first guide rods and the bidirectional threaded rod are inserted through the two movable plates. The two movable plates are respectively threadedly matched with the two ends of the bidirectional threaded rod. The output end of the first motor is connected to one end of the bidirectional threaded rod. Each group of the vertical rods is respectively fixedly mounted on the top of a movable plate.

3. The plate lifting device with adjustable lifting height according to claim 2, characterized in that: A first slide rail, a first slider and a first strip hole are provided on the top of the vertical rod. The first slider is slidably matched with the first slide rail. The rotating shaft of the lifting roller is inserted through the first strip hole and is rotatably connected with the first slider.

4. The plate lifting device with adjustable lifting height according to claim 3, characterized in that: The second motor is installed on one of the moving plates, and a second belt is sleeved on the output end and the driving wheel of the second motor.

5. The plate lifting device with adjustable lifting height according to claim 4, characterized in that: A bracket is provided at the top of the movable base, and the top plate of the bracket is placed directly above the plate lifting mechanism. A cylinder is provided at the top of the top plate of the bracket, and the telescopic end of the cylinder passes through the top plate of the bracket and a discharging mechanism is provided at the telescopic end of the cylinder. Telescopic rods are provided on both sides of the discharging mechanism and between the multiple first sliders.

6. The plate lifting device with adjustable lifting height according to claim 5, characterized in that: The discharging mechanism includes an outer shell, a lifting seat and a shock-absorbing suspension rod. A first trough body is opened on the lower side of the outer shell. The lifting seat is slidably installed in the first trough body. A first conveyor belt is provided at the bottom of the lifting seat. The shock-absorbing suspension rod is installed at the top end of the trough body of the outer shell. The telescopic end of the shock-absorbing suspension rod is connected to the top end of the lifting seat.

7. The plate lifting device with adjustable lifting height according to claim 6, characterized in that: A feeding mechanism is provided at the top of the movable base, and the feeding mechanism includes a jig, a second conveyor belt and two baffles. The second conveyor belt is arranged at the bottom of the jig, and a second trough body is opened at the lower side of the jig. Two groups of third slide rails are symmetrically provided at the top of the second trough body. A fourth slide rail is provided on the third slide rail for sliding cooperation therewith. The two baffles are respectively installed on the corresponding fourth slide rails, and a connecting rod is provided between one end of the two baffles and the corresponding vertical rod.

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