A lifting and adjusting structure

Abstract

The present invention discloses a lifting adjustment structure, which relates to the technical field of lifting structures, and comprises a bottom plate, the top of which is fixedly connected with four symmetrically arranged first boxes, and the bottom of each first box is rotatably connected with a first worm gear through a first rotating shaft, the upper end of the first rotating shaft is fixedly connected with a lead screw sub-spindle, and the side wall of the lead screw sub-spindle is provided with a lead screw sub-flange nut, and the side wall of the lead screw sub-spindle is sleeved with a lifting plate. This lifting adjustment structure adopts mechanical parts, and the lifting height adjustment is achieved through the meshing between the mechanical parts. The structure is safe and reliable, and the failure rate is low. At the same time, multiple lead screw sub-spindles are used for synchronous operation, so the load-bearing capacity is stronger, the stability in the horizontal direction is higher, the reliability is strong, the lifting adjustment is more precise, and it can stop at any height within the design range. It adopts multi-component synchronous execution, and has a large load-bearing capacity. The execution components adopt mechanical parts, and the component structure is relatively simple and the reliability is high.

Description

Technical Field

[0001] The invention relates to the technical field of lifting structures, in particular to a lifting adjustment structure. Background Art

[0002] There are two types of lifting and adjustment structures available on the market. One is a scissor-type cylinder lifting device, in which the actuator mainly controls the cylinder and the scissor arm. When working, the lifting and lowering of the scissor arm is controlled by the extension and retraction of the cylinder to achieve the lifting and adjustment of the platform cargo. The other is a screw-type lifting device, in which the actuator is a single screw system, and the lifting and adjustment is achieved by relying on the meshing bottom of the screw when in action.

[0003] However, when the existing lifting adjustment structure is in use, the lifting of the scissor-type cylinder lifting device relies on the telescopic control of the scissor arm of the cylinder, and it is impossible to accurately adjust the lifting height to any desired height; the single-screw lifting device drives the engagement of the screw by rotating the rocker arm to achieve lifting and lowering, and the accuracy is improved, but the single-screw load-bearing capacity is limited, and it is impossible to lift heavy objects smoothly.

[0004] To this end, we propose a lifting and lowering adjustment structure. Summary of the invention

[0005] The object of the present invention is to provide a lifting and adjusting structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lifting and adjusting structure, comprising a base plate, the top of the base plate is fixedly connected with four symmetrically arranged first box bodies, and the bottom of each first box body is rotatably connected with a first worm gear through a first rotating shaft, the upper end of the first rotating shaft is fixedly connected with a lead screw sub-spindle, and the side wall of the lead screw sub-spindle is provided with a lead screw sub-flange nut, the side wall of the lead screw sub-spindle is sleeved with a lifting plate, and a compensation mechanism is provided between each lead screw sub-flange nut and the lifting plate, the side wall of each lead screw sub-flange nut is provided with a detection mechanism for detecting the distance between the lifting plate and the lead screw sub-flange nut, and a first worm is rotatably connected with a first transmission shaft in the first box body, the first worm is meshingly arranged with the first worm gear, and the rotation of the first transmission shaft is driven by a driving mechanism.

[0007] Preferably, the driving mechanism includes two symmetrically arranged second housings fixedly connected to the top of the base plate, and each second housing is rotatably connected to a second worm gear via a second transmission shaft, both ends of the second transmission shaft are respectively fixed to the ends of the first transmission shaft, and each second housing is rotatably connected to a second worm gear via a third transmission shaft, the second worm gear is meshing with the second worm gear, and the top of the base plate is fixedly connected to a third housing, a third worm gear is rotatably connected to the third housing via a fourth transmission shaft, and both ends of the fourth transmission shaft are respectively fixed to the ends of the third transmission shaft, a third worm gear is rotatably connected to the third housing via a fifth transmission shaft, and the third worm gear is meshing with the third worm gear, and a motor is fixedly connected to the top of the base plate, a sixth transmission shaft is fixedly connected to the output end of the motor, and a soft connection mechanism is arranged between the sixth transmission shaft and the fifth transmission shaft.

[0008] Preferably, the compensation mechanism includes two symmetrically arranged sleeves fixedly connected to the top of the screw pair flange nut, and each sleeve is filled with damping fluid, a sliding disk is slidably connected in the sleeve, and a plurality of through holes arranged in an array are opened on the top of the sliding disk, a sleeve rod is fixedly connected to the top of the sliding disk, and a fixed plate is fixedly connected to the upper end of the sleeve rod, the fixed plate is fixed to the bottom of the lifting plate, and a first spring is sleeved on the side wall of each sleeve rod.

[0009] Preferably, the detection mechanism includes a connecting block fixedly connected to the top of the screw sub-flange nut, and the side wall of the connecting block is fixedly connected to an arc plate, the side wall of the arc plate is provided with a first scale mark, and the side wall of the screw sub-flange nut is rotatably connected to a first pointer through a rotating mechanism, the side wall of the first pointer is fixedly connected to an L-shaped block, and the side wall of the L-shaped block is fixedly inserted with a visual sensor.

[0010] Preferably, the rotating mechanism comprises an L-shaped plate fixedly connected to the side wall of the screw pair flange nut, the first pointer is rotationally connected to the side wall of the L-shaped plate via a second rotating shaft, and the rotation of the first pointer is driven by a driving mechanism.

[0011] Preferably, the pushing mechanism includes a slide groove provided on the side wall of the first pointer, and a pushing pin is inserted in the slide groove, and the end of the pushing pin is fixedly connected to a connecting plate, and the connecting plate is fixed to the bottom of the lifting plate.

[0012] Preferably, the soft connection mechanism includes a first connecting plate fixedly connected to the end of the fifth transmission shaft, and the end of the first connecting plate is provided with a plurality of rectangular grooves arranged in an array, the end of the sixth transmission shaft is fixedly connected to a second connecting plate, and the end of the second connecting plate is connected to a plurality of rectangular blocks arranged in an array through a pressure regulating mechanism, the rectangular blocks are inserted in the rectangular grooves, and the rectangular blocks include two symmetrically arranged inclined surfaces.

[0013] Preferably, the pressure regulating mechanism includes a plurality of rectangular rods arranged in an array and inserted at the end of the second connecting disk, and one end of the rectangular rod is fixed to the side wall of the rectangular block, the other end of the rectangular rod is fixedly connected to the disk, and the side wall of the sixth transmission shaft is connected to a moving ring through a moving mechanism, the end of the moving ring is fixedly connected to a plurality of second springs arranged in an array, and the other end of the second spring is fixed to the end of the disk.

[0014] Preferably, the moving mechanism includes two symmetrically arranged T-shaped guide rods fixedly connected to the end of the second connecting disk, and the moving ring is sleeved on the side wall of the T-shaped guide rod, the end of the second connecting disk is rotatably connected to a threaded rod, and the moving ring is threadedly connected to the threaded rod, the end of the threaded rod is provided with a hexagon socket, and the side wall of the second connecting disk is provided with an indicating mechanism.

[0015] Preferably, the indicating mechanism comprises a scale plate fixedly connected to the end of the second connecting disk, and the side wall of the scale plate is provided with a second scale mark, the side wall of the movable ring is fixedly connected to a mounting block, and the side wall of the mounting block is fixedly connected to a second pointer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention sets a driving mechanism, etc., when it is necessary to lift the goods, first put the goods on the lifting plate, then start the motor, the rotation of the motor drives the rotation of the sixth transmission shaft, and at the same time, drives the fifth transmission shaft and the third worm gear to rotate through the soft connection mechanism, when the third worm gear rotates, it can drive the third worm and the fourth transmission shaft to rotate, and drive the two third transmission shafts and the second worm to rotate, when the two second worm gears rotate, it can drive the two second worm gears and the second transmission shaft to rotate, and then drive the four first worm gears to rotate through the first transmission shaft, when the first worm gear rotates When it moves, it can drive the first worm gear and the first rotating shaft to rotate, thereby driving the four screw sub-spindles to rotate synchronously, and then driving the four screw sub-flange nuts and the lifting plate to lift and lower. Mechanical parts are used to achieve lifting height adjustment through the engagement between mechanical parts. The structure is safe and reliable with a low failure rate. At the same time, multiple screw sub-spindles are used to operate synchronously, with stronger load-bearing capacity, higher horizontal stability, strong reliability, and more precise lifting adjustment. It can stop at any height within the design range. It adopts multi-component synchronous execution and has a large load-bearing capacity. The execution components use mechanical parts, and the component structure is relatively simple and has high reliability.

[0018] The present invention provides a buffer mechanism and a detection mechanism, etc., so that when the goods are placed on the lifting plate, the sliding plate can be pushed downward along the sleeve by the fixed plate and the first spring under the action of gravity. At the same time, the first spring is compressed. At this time, the distance between the lifting plate and the screw flange nut becomes smaller. At the same time, when the lifting plate moves downward, the pushing pin can be driven to slide along the slide groove through the connecting plate, thereby pushing the first pointer to rotate clockwise along the second rotating shaft, and driving the visual sensor to rotate synchronously through the L-shaped block. The visual sensor detects the first scale mark on the arc plate indicated by the first pointer to determine the compression amount of the first spring, and then the weight of the goods. When the goods are overloaded, an alarm can be sounded through an external alarm, which is safer and more reliable. During the lifting process, when vibration occurs, the sliding plate can slide in the sleeve, so that the damping fluid flows along the through hole, and the first spring is deformed, so as to have a shock-absorbing effect on the lifting plate and the cargo, which is more stable and reliable. In addition, during the lifting process, when the displacement of some of the screw sub-flange nuts produces errors, the distance between the screw sub-flange nut and the lifting plate will change. At this time, the sliding plate can slide in the sleeve, and the first spring is deformed, so as to protect the screw sub-spindle and the screw sub-flange nut to avoid damage and ensure their use effect and life. In addition, by detecting the amplitude of the change of the first scale mark indicated by the first pointer through the visual sensor, the size of the displacement error of the screw sub-flange nut can be determined. When the error is large, the staff is reminded to perform inspection and maintenance.

[0019] The present invention is provided with a soft connection mechanism, etc., when the sixth transmission shaft rotates during lifting, the second connection disk is driven to rotate. At the same time, the first connection disk is driven to rotate through a plurality of rectangular rods and rectangular blocks, and then the fifth transmission shaft is driven to rotate. When the lifting plate and the goods are obstructed during the lifting process, the inclined surface can abut against the side wall of the rectangular groove, so that the rectangular block slides out of the first connection disk and slides at the end of the first connection disk. At the same time, the disc is driven to move by the rectangular rod, and the second spring is compressed, which can not only prevent the lifting plate and the goods from continuing to lift, but also prevent the motor from being blocked, which is safer and more reliable, and ensures the use effect and life of the motor. In addition, by rotating the threaded rod through a tool, the moving ring can be driven to move along the T-shaped guide rod, so that the compression amount of the second spring can be adjusted. At the same time, by observing the second scale mark on the scale plate indicated by the second pointer, the compression amount of the second spring can be determined, and then the extrusion force between the rectangular block and the rectangular groove can be adjusted, and the maximum torque transmitted between the sixth transmission shaft and the fifth transmission shaft can be adjusted, which has stronger applicability and better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 It is a schematic diagram of the position of the driving mechanism in the present invention;

[0023] Figure 4 It is a schematic diagram of the position of the soft connection mechanism in the present invention;

[0024] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0026] Figure 7 for Figure 4 Enlarged view of point C in the middle;

[0027] Figure 8 for Figure 5 Enlarged view of point D in the middle.

[0028] In the figure: 1, bottom plate; 201, sleeve; 202, sliding plate; 203, through hole; 204, sleeve rod; 205, fixed plate; 206, first spring; 301, connecting block; 302, arc plate; 303, first pointer; 304, L-shaped block; 305, visual sensor; 306, first scale mark; 401, L-shaped plate; 402, second rotating shaft; 501, connecting plate; 502, slide groove; 503, push pin; 601, first connecting plate; 602, rectangular groove; 603, second connecting plate; 604, rectangular block; 605, inclined plane; 701, moving ring; 702, rectangular rod; 703, disc; 704, second spring; 801, T-shaped guide rod; 8 02, threaded rod; 803, hexagon socket; 901, scale plate; 902, second scale mark; 903, mounting block; 904, second pointer; 10, first worm gear; 11, first housing; 12, lead screw sub-spindle; 13, first transmission shaft; 14, first worm; 15, lead screw sub-flange nut; 16, lifting plate; 1701, second housing; 1702, second transmission shaft; 1703, second worm gear; 1704, third transmission shaft; 1705, third housing; 1706, fourth transmission shaft; 1707, third worm; 1708, fifth transmission shaft; 1709, third worm gear; 1710, motor; 1711, sixth transmission shaft; 1712, second worm. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 8 A lifting adjustment structure shown in the figure includes a base plate 1, four symmetrically arranged first boxes 11 are fixedly connected to the top of the base plate 1, and the bottom of each first box 11 is rotatably connected to a first worm gear 10 through a first rotating shaft, a screw sub-spindle 12 is fixedly connected to the upper end of the first rotating shaft, and a screw sub-flange nut 15 is arranged on the side wall of the screw sub-spindle 12, a lifting plate 16 is sleeved on the side wall of the screw sub-spindle 12, and a compensation mechanism is arranged between each screw sub-flange nut 15 and the lifting plate 16, and a detection mechanism for detecting the distance between the lifting plate 16 and the screw sub-flange nut 15 is arranged on the side wall of each screw sub-flange nut 15 , and a first worm 14 is rotatably connected to the first box body 11 through a first transmission shaft 13, the first worm 14 is meshed with the first worm wheel 10, and the rotation of the first transmission shaft 13 is driven by a driving mechanism, and mechanical parts are adopted to achieve lifting height adjustment through meshing between mechanical parts. The structure is safe and reliable, and the failure rate is low. At the same time, multiple screw sub-spindles 12 are adopted to operate synchronously, with stronger load-bearing capacity, higher horizontal stability, strong reliability, more precise lifting adjustment, and can stop at any height within the design range. It adopts multi-component synchronous execution and has a large load-bearing capacity. The execution components adopt mechanical parts, and the component structure is relatively simple and the reliability is high.

[0031] The driving mechanism includes two symmetrically arranged second boxes 1701 fixedly connected to the top of the bottom plate 1, and each second box 1701 is rotatably connected to a second worm gear 1703 through a second transmission shaft 1702, and the two ends of the second transmission shaft 1702 are respectively fixed to the ends of the first transmission shaft 13, and each second box 1701 is rotatably connected to a second worm 1712 through a third transmission shaft 1704, and the second worm 1712 is meshed with the second worm gear 1703, and the top of the bottom plate 1 is fixed. A third box body 1705 is connected, a third worm 1707 is rotatably connected to the third box body 1705 through a fourth transmission shaft 1706, and both ends of the fourth transmission shaft 1706 are respectively fixed to the ends of the third transmission shaft 1704, a third worm wheel 1709 is rotatably connected to the third box body 1705 through a fifth transmission shaft 1708, and the third worm wheel 1709 is meshed with the third worm 1707, and a motor 1710 is fixedly connected to the top of the bottom plate 1, and the output end of the motor 1710 is fixedly connected There is a sixth transmission shaft 1711, and a soft connection mechanism is arranged between the sixth transmission shaft 1711 and the fifth transmission shaft 1708. The motor 1710 is started, and the rotation of the motor 1710 drives the rotation of the sixth transmission shaft 1711. At the same time, the fifth transmission shaft 1708 and the third worm gear 1709 are driven to rotate through the soft connection mechanism. When the third worm gear 1709 rotates, it can drive the third worm 1707 and the fourth transmission shaft 1706 to rotate, and drive the two third transmission shafts 1704 and the second worm 1712 to rotate. When the two second worm gears 1712 rotate, they can drive the two second worm gears 1703 and the second transmission shaft 1702 to rotate, and then drive the four first worm gears 14 to rotate through the first transmission shaft 13. When the first worm gear 14 rotates, it can drive the first worm gear 10 and the first rotating shaft to rotate, thereby driving the four screw sub-spindles 12 to rotate synchronously, and then driving the four screw sub-flange nuts 15 and the lifting plate 16 to lift and lower.

[0032] The compensation mechanism includes two symmetrically arranged sleeves 201 fixedly connected to the top of the screw pair flange nut 15, and each sleeve 201 is filled with damping fluid, a sliding disk 202 is slidably connected in the sleeve 201, and a plurality of through holes 203 arranged in an array are opened on the top of the sliding disk 202, a sleeve rod 204 is fixedly connected to the top of the sliding disk 202, and a fixed disk 205 is fixedly connected to the upper end of the sleeve rod 204, the fixed disk 205 is fixed to the bottom of the lifting plate 16, and the side wall of each sleeve rod 204 is sleeved with a first spring 206. In the process of lifting, when When errors occur in the displacement of some of the screw sub-flange nuts 15, the distance between the screw sub-flange nuts 15 and the lifting plate 16 will change. At this time, the sliding disk 202 can slide in the sleeve 201, and the first spring 206 is deformed, thereby protecting the screw sub-spindle 12 and the screw sub-flange nut 15 to avoid damage, ensure their use effect and life, and avoid the different transmission clearances of each group of components, causing multiple screw sub-flange nuts 15 to be out of sync, and then causing damage to the screw sub-spindle 12 and the screw sub-flange nut 15.

[0033] The detection mechanism includes a connecting block 301 fixedly connected to the top of the screw sub-flange nut 15, and the side wall of the connecting block 301 is fixedly connected to an arc plate 302, the side wall of the arc plate 302 is provided with a first scale mark 306, and the side wall of the screw sub-flange nut 15 is rotatably connected to a first pointer 303 through a rotating mechanism, the side wall of the first pointer 303 is fixedly connected to an L-shaped block 304, and the side wall of the L-shaped block 304 is fixedly inserted with a visual sensor 305. When the goods are placed on the lifting plate 16, the sliding plate 202 can be pushed downward along the sleeve 201 by the fixed plate 205 and the first spring 206 under the action of gravity. At the same time, the first spring 206 is compressed. At this time, the distance between the lifting plate 16 and the screw sub-flange nut 15 becomes smaller. At the same time, when the lifting plate 16 moves downward, the driving mechanism can push the first pointer 303 to rotate clockwise along the rotating mechanism, and drive the visual sensor 305 through the L-shaped block 304. The first spring 206 is rotated synchronously, and the first scale mark 306 on the arc plate 302 indicated by the first pointer 303 is detected by the visual sensor 305, so that the compression amount of the first spring 206 can be determined, and then the weight of the cargo can be determined. When the cargo is overloaded, an alarm can be sounded through an external alarm, which is safer and more reliable. In addition, during the lifting process, when the displacement of part of the lead screw sub-flange nut 15 produces an error, the distance between the lead screw sub-flange nut 15 and the lifting plate 16 will change. At this time, the sliding plate 202 can slide in the sleeve 201, and the first spring 206 is deformed, so that the lead screw sub-spindle 12 and the lead screw sub-flange nut 15 can be protected to avoid damage and ensure their use effect and life. In addition, by detecting the amplitude of the change of the first scale mark 306 indicated by the first pointer 303 through the visual sensor 305, the size of the displacement error of the lead screw sub-flange nut 15 can be determined. When the error is large, the staff is reminded to perform inspection and maintenance.

[0034] The rotating mechanism includes an L-shaped plate 401 fixedly connected to the side wall of the screw pair flange nut 15. The first pointer 303 is rotationally connected to the side wall of the L-shaped plate 401 through the second rotating shaft 402, and the rotation of the first pointer 303 is driven by the driving mechanism to ensure the normal rotation of the first pointer 303.

[0035] The pushing mechanism includes a slide groove 502 opened on the side wall of the first pointer 303, and a pushing pin 503 is inserted in the slide groove 502. The end of the pushing pin 503 is fixedly connected to a connecting plate 501, and the connecting plate 501 is fixed to the bottom of the lifting plate 16. When the distance between the lifting plate 16 and the screw pair flange nut 15 changes, the pushing pin 503 can be driven by the connecting plate 501 to slide along the slide groove 502, thereby pushing the first pointer 303 to rotate along the second rotating shaft 402.

[0036] The soft connection mechanism includes a first connection plate 601 fixedly connected to the end of the fifth transmission shaft 1708, and a plurality of rectangular grooves 602 arranged in an array are opened at the end of the first connection plate 601, and a second connection plate 603 is fixedly connected to the end of the sixth transmission shaft 1711, and a plurality of rectangular blocks 604 arranged in an array are connected to the end of the second connection plate 603 through a pressure regulating mechanism, the rectangular block 604 is inserted into the rectangular groove 602, and the rectangular block 604 includes two symmetrically arranged inclined surfaces 605. When lifting, when the sixth transmission shaft 1711 rotates, the second connection plate 603 is driven to rotate. At the same time, the first connection plate 601 is driven to rotate through a plurality of rectangular rods 702 and the rectangular block 604, thereby driving the fifth transmission shaft 1708 to rotate. When the lifting plate 16 and the cargo are obstructed during the lifting process, the inclined surface 605 can be against the side wall of the rectangular groove 602, so that the rectangular block 604 slides out of the first connection plate 601 and slides at the end of the first connection plate 601.

[0037] The pressure regulating mechanism includes a plurality of rectangular rods 702 arranged in an array and inserted at the end of the second connecting disk 603, and one end of the rectangular rod 702 is fixed to the side wall of the rectangular block 604, and the other end of the rectangular rod 702 is fixedly connected to the disk 703, and the side wall of the sixth transmission shaft 1711 is connected to the moving ring 701 through a moving mechanism, and the end of the moving ring 701 is fixedly connected to a plurality of second springs 704 arranged in an array, and the other end of the second spring 704 is fixed to the end of the disk 703. The moving ring 701 is driven to move by the moving mechanism, so that the compression amount of the second spring 704 can be adjusted, and then the extrusion force between the rectangular block 604 and the rectangular groove 602 can be adjusted, and the maximum torque transmitted between the sixth transmission shaft 1711 and the fifth transmission shaft 1708 can be adjusted, so it has stronger applicability and better use effect.

[0038] The moving mechanism includes two symmetrically arranged T-shaped guide rods 801 fixedly connected to the end of the second connecting disk 603, and the moving ring 701 is sleeved on the side wall of the T-shaped guide rod 801. The end of the second connecting disk 603 is rotatably connected with a threaded rod 802, and the moving ring 701 is threadedly connected to the threaded rod 802. The end of the threaded rod 802 is provided with a hexagon socket 803, and the side wall of the second connecting disk 603 is provided with an indicating mechanism. By rotating the threaded rod 802 with a tool, the moving ring 701 can be driven to move along the T-shaped guide rod 801, thereby adjusting the compression amount of the second spring 704.

[0039] The indicating mechanism includes a scale plate 901 fixedly connected to the end of the second connecting disk 603, and the side wall of the scale plate 901 is provided with a second scale mark 902, the side wall of the movable ring 701 is fixedly connected to a mounting block 903, and the side wall of the mounting block 903 is fixedly connected to a second pointer 904. By observing the second scale mark 902 on the scale plate 901 indicated by the second pointer 904, the compression amount of the second spring 704 can be determined, and then the extrusion force between the rectangular block 604 and the rectangular groove 602 can be adjusted.

[0040] Working principle: When in use, when it is necessary to lift the goods, first place the goods on the lifting plate 16, then start the motor 1710, the rotation of the motor 1710 drives the rotation of the sixth transmission shaft 1711, and at the same time, drives the fifth transmission shaft 1708 and the third worm gear 1709 to rotate through the soft connection mechanism, when the third worm gear 1709 rotates, it can drive the third worm 1707 and the fourth transmission shaft 1706 to rotate, and drive the two third transmission shafts 1704 and the second worm 1712 to rotate, when the two second worm gears 1712 rotate, it can drive the two second worm gears 1703 and the second transmission shaft 1702 to rotate, and then drive the first transmission shaft 13 The four first worms 14 rotate, and when the first worms 14 rotate, they can drive the first worm wheel 10 and the first rotating shaft to rotate, thereby driving the four lead screw sub-spindles 12 to rotate synchronously, and then driving the four lead screw sub-flange nuts 15 and the lifting plate 16 to lift. Mechanical parts are used, and the lifting height adjustment is achieved through the meshing between the mechanical parts. The structure is safe and reliable, and the failure rate is low. At the same time, multiple lead screw sub-spindles 12 are used to operate synchronously, with stronger load-bearing capacity, higher horizontal stability, strong reliability, and more precise lifting adjustment. It can stop at any height within the design range. It adopts multi-component synchronous execution, has a large load-bearing capacity, and the execution components use mechanical parts. The component structure is relatively simple and the reliability is high.

[0041] When the cargo is placed on the lifting plate 16, the sliding plate 202 can be pushed downward along the sleeve 201 by the fixed plate 205 and the first spring 206 under the action of gravity. At the same time, the first spring 206 is compressed. At this time, the distance between the lifting plate 16 and the lead screw flange nut 15 becomes smaller. At the same time, when the lifting plate 16 moves downward, the pushing pin 503 can be driven to slide along the slide groove 502 through the connecting plate 501, thereby pushing the first pointer 303 to rotate clockwise along the second rotating shaft 402, and driving the visual sensor 305 to rotate synchronously through the L-shaped block 304. The visual sensor 305 detects the first scale mark 306 on the arc plate 302 indicated by the first pointer 303, and the compression amount of the first spring 206 can be determined, and then the weight of the cargo can be determined. When the cargo is overloaded, an alarm can be sounded through an external alarm, which is safer and more reliable.

[0042] During the lifting process, when vibration occurs, the sliding plate 202 can slide in the sleeve 201, so that the damping fluid flows along the through hole 203, and the first spring 206 is deformed, so that the lifting plate 16 and the cargo can be cushioned, which is more stable and reliable. In addition, during the lifting process, when the displacement of part of the lead screw flange nut 15 produces an error, the distance between the lead screw flange nut 15 and the lifting plate 16 will change. At this time, the sliding plate 202 can slide in the sleeve 201, and the first spring 206 is deformed, so that the lead screw sub-spindle 12 and the lead screw flange nut 15 can be protected to avoid damage and ensure their use effect and life. In addition, the visual sensor 305 detects the amplitude of the change of the first scale mark 306 indicated by the first pointer 303, so as to determine the size of the displacement error of the lead screw flange nut 15. When the error is large, the staff is reminded to perform inspection and maintenance.

[0043] Furthermore, when the sixth transmission shaft 1711 is rotated during lifting, the second connection plate 603 is driven to rotate. At the same time, the first connection plate 601 is driven to rotate through the plurality of rectangular rods 702 and the rectangular block 604, thereby driving the fifth transmission shaft 1708 to rotate. When the lifting plate 16 and the goods are obstructed during the lifting process, the inclined surface 605 can abut against the side wall of the rectangular groove 602, so that the rectangular block 604 slides out of the first connection plate 601 and slides at the end of the first connection plate 601. At the same time, the disc 703 is driven to move through the rectangular rod 702, and the second spring 704 is compressed, which can not only prevent the lifting plate 16 and the goods from continuing to lift, but also prevent the lifting plate 16 and the goods from continuing to lift. The motor 1710 can be prevented from being blocked, which is safer and more reliable, and the use effect and life of the motor 1710 are guaranteed. Moreover, by rotating the threaded rod 802 through a tool, the movable ring 701 can be driven to move along the T-shaped guide rod 801, so that the compression amount of the second spring 704 can be adjusted. At the same time, by observing the second scale mark 902 on the scale plate 901 indicated by the second pointer 904, the compression amount of the second spring 704 can be determined, and then the squeezing force between the rectangular block 604 and the rectangular groove 602 can be adjusted, so as to adjust the maximum torque transmitted between the sixth transmission shaft 1711 and the fifth transmission shaft 1708, which has stronger applicability and better use effect.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting and adjusting structure, comprising a bottom plate (1), characterized in that: The top of the base plate (1) is fixedly connected to four symmetrically arranged first boxes (11), and the bottom of each first box (11) is rotatably connected to a first worm gear (10) via a first rotating shaft, the upper end of the first rotating shaft is fixedly connected to a lead screw sub-spindle (12), and a lead screw sub-flange nut (15) is arranged on the side wall of the lead screw sub-spindle (12), a lifting plate (16) is sleeved on the side wall of the lead screw sub-spindle (12), and a compensation mechanism is arranged between each lead screw sub-flange nut (15) and the lifting plate (16), and a detection mechanism for detecting the distance between the lifting plate (16) and the lead screw sub-flange nut (15) is arranged on the side wall of each lead screw sub-flange nut (15), and a first worm (14) is rotatably connected to the first box (11) via a first transmission shaft (13), the first worm (14) is meshed with the first worm gear (10), and the rotation of the first transmission shaft (13) is driven by a driving mechanism.

2. A lifting and adjusting structure according to claim 1, characterized in that: The driving mechanism comprises two symmetrically arranged second boxes (1701) fixedly connected to the top of the base plate (1), and each second box (1701) is rotatably connected to a second worm gear (1703) via a second transmission shaft (1702), and both ends of the second transmission shaft (1702) are respectively fixed to the ends of the first transmission shaft (13), and each second box (1701) is rotatably connected to a second worm (1712) via a third transmission shaft (1704), and the second worm (1712) is meshed with the second worm gear (1703), and a third box (1705) is fixedly connected to the top of the base plate (1), and the third box (1705) A third worm (1707) is rotatably connected to the third housing (1705) via a fourth transmission shaft (1706), and both ends of the fourth transmission shaft (1706) are respectively fixed to the ends of the third transmission shaft (1704); a third worm wheel (1709) is rotatably connected to the third housing (1705) via a fifth transmission shaft (1708), and the third worm wheel (1709) is meshed with the third worm (1707); a motor (1710) is fixedly connected to the top of the bottom plate (1); a sixth transmission shaft (1711) is fixedly connected to the output end of the motor (1710), and a soft connection mechanism is provided between the sixth transmission shaft (1711) and the fifth transmission shaft (1708).

3. A lifting and adjusting structure according to claim 2, characterized in that: The compensation mechanism comprises two symmetrically arranged sleeves (201) fixedly connected to the top of the screw pair flange nut (15), and each sleeve (201) is filled with damping fluid, a sliding disk (202) is slidably connected inside the sleeve (201), and a plurality of through holes (203) arranged in an array are opened on the top of the sliding disk (202), a sleeve rod (204) is fixedly connected to the top of the sliding disk (202), and a fixed disk (205) is fixedly connected to the upper end of the sleeve rod (204), the fixed disk (205) is fixed to the bottom of the lifting plate (16), and a first spring (206) is sleeved on the side wall of each sleeve rod (204).

4. The lifting and lowering adjustment structure according to claim 1, characterized in that: The detection mechanism comprises a connection block (301) fixedly connected to the top of the screw pair flange nut (15), and the side wall of the connection block (301) is fixedly connected to an arc plate (302), the side wall of the arc plate (302) is provided with a first scale mark (306), and the side wall of the screw pair flange nut (15) is rotatably connected to a first pointer (303) through a rotating mechanism, the side wall of the first pointer (303) is fixedly connected to an L-shaped block (304), and the side wall of the L-shaped block (304) is fixedly inserted with a visual sensor (305).

5. The lifting and lowering adjustment structure according to claim 4, characterized in that: The rotating mechanism comprises an L-shaped plate (401) fixedly connected to the side wall of the screw pair flange nut (15); the first pointer (303) is rotatably connected to the side wall of the L-shaped plate (401) via a second rotating shaft (402); and the rotation of the first pointer (303) is driven by a driving mechanism.

6. The lifting and lowering adjustment structure according to claim 5, characterized in that: The pushing mechanism comprises a slide groove (502) provided on the side wall of the first pointer (303), and a pushing pin (503) is inserted in the slide groove (502), and the end of the pushing pin (503) is fixedly connected to a connecting plate (501), and the connecting plate (501) is fixed to the bottom of the lifting plate (16).

7. The lifting and lowering adjustment structure according to claim 2, characterized in that: The soft connection mechanism comprises a first connection disk (601) fixedly connected to the end of the fifth transmission shaft (1708), and the end of the first connection disk (601) is provided with a plurality of rectangular grooves (602) arranged in an array, the end of the sixth transmission shaft (1711) is fixedly connected to a second connection disk (603), and the end of the second connection disk (603) is connected to a plurality of rectangular blocks (604) arranged in an array through a pressure adjustment mechanism, the rectangular blocks (604) are inserted into the rectangular grooves (602), and the rectangular blocks (604) include two symmetrically arranged inclined surfaces (605).

8. The lifting and lowering adjustment structure according to claim 7, characterized in that: The pressure regulating mechanism comprises a plurality of rectangular rods (702) arranged in an array and inserted at the end of the second connecting disk (603), and one end of the rectangular rod (702) is fixed to the side wall of the rectangular block (604), and the other end of the rectangular rod (702) is fixedly connected to the disk (703), and the side wall of the sixth transmission shaft (1711) is connected to a moving ring (701) through a moving mechanism, and the end of the moving ring (701) is fixedly connected to a plurality of second springs (704) arranged in an array, and the other end of the second spring (704) is fixed to the end of the disk (703).

9. The lifting and lowering adjustment structure according to claim 8, characterized in that: The moving mechanism comprises two symmetrically arranged T-shaped guide rods (801) fixedly connected to the end of the second connecting disk (603), and the moving ring (701) is sleeved on the side wall of the T-shaped guide rod (801); the end of the second connecting disk (603) is rotatably connected to a threaded rod (802), and the moving ring (701) is threadedly connected to the threaded rod (802); the end of the threaded rod (802) is provided with a hexagon socket (803), and the side wall of the second connecting disk (603) is provided with an indicating mechanism.

10. The lifting and lowering adjustment structure according to claim 9, characterized in that: The indicating mechanism comprises a scale plate (901) fixedly connected to the end of the second connecting disk (603), and the side wall of the scale plate (901) is provided with a second scale mark (902); the side wall of the movable ring (701) is fixedly connected to a mounting block (903), and the side wall of the mounting block (903) is fixedly connected to a second pointer (904).

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