A mechanical lifting device with angle adjustable function

Abstract

The present invention relates to the field of lifting devices, specifically a mechanical lifting device with an angle adjustable function, which solves the problem that the existing lifting device needs to set up a separate motor or cylinder as a driving source when adjusting the angle between the lifting plate and the back plate, and includes a bottom plate, a first support plate and a back plate, wherein the bottom plate and the first support plate are connected by a rotating mechanism, and the upper surface of the bottom plate is fixedly connected with two symmetrical right-angle frames, and a first reinforcement column and a second reinforcement column are fixedly connected between the two right-angle frames, and two first U-shaped slide plates are fixedly connected to a side of the back plate close to the right-angle frame. By setting an adjustment mechanism, the present invention can realize stable lifting of objects without setting up a separate driving source, thereby not only reducing the cost of the lifting device, but also reducing the load of the lifting mechanism, thereby increasing the life of the lifting mechanism and reducing the risk of its loss of control.

Description

Technical Field

[0001] The invention relates to the technical field of lifting devices, and in particular to a mechanical lifting device with an angle-adjustable function. Background Art

[0002] A lifting device is a material handling tool that lifts or hoists heavy objects. It is a tool that works intermittently and lifts heavy objects. Most lifting devices start a vertical or vertical and horizontal working stroke after the spreader picks up the material, unload after reaching the destination, and then travel to the material picking location to complete a working cycle, and then perform a second lifting.

[0003] At present, in order to ensure the safety during lifting and loading operations, it is necessary to limit the objects on the lifting plate to prevent the objects from falling from the lifting plate during lifting. There are generally two ways to limit the objects. One is to install a clamping mechanism on the lifting plate to clamp and limit the objects. The other is to adjust the angle between the lifting plate and the back plate to directly clamp and limit the objects through the clamping plate and the back plate. It is known from practice that installing a clamping mechanism on the lifting plate will compress the space of the lifting plate itself and affect the placement of the objects. Therefore, the angle between the lifting plate and the back plate is adjusted to clamp and limit the objects.

[0004] When the existing mechanical lifting device adjusts the angle between the lifting plate and the back plate, it is necessary to set up a separate motor or cylinder as a driving source to control the rotation of the lifting plate. Using this method for adjustment will not only increase the cost of the mechanical lifting device itself, but also require the motor or cylinder to perform corresponding movements when driving the lifting plate to perform lifting movements, which will greatly increase the load on the lifting mechanism, affecting the life of the lifting mechanism and increasing the risk of it losing control.

[0005] Therefore, the present invention provides a mechanical lifting device with an angle adjustable function to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a mechanical lifting device with an angle adjustable function to solve the problem that when the above lifting device adjusts the angle between the lifting plate and the back plate, a separate motor or cylinder is needed to be set up as a driving source.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] The lifting device according to claim 1, wherein the first and second supporting plates are connected to each other via a rotation mechanism, the upper surface of the bottom plate is fixedly connected to two symmetrical right-angle frames, a first reinforcing column and a second reinforcing column are fixedly connected between the two right-angle frames, a side of the back plate close to the right-angle frame is fixedly connected to two first U-shaped slide plates, the two first U-shaped slide plates are respectively slidably connected to the outer surfaces of the two right-angle frames, a side of the back plate away from the right-angle frame is fixedly connected to two symmetrical first supporting seats, a first rotating shaft is rotatably installed between the two first supporting seats, a rotating roller is fixedly connected to the outer surface of the first rotating shaft located between the two first supporting seats, a lifting plate is fixedly connected to the outer surface of the rotating roller, and a lifting mechanism for adjusting the height of the lifting plate is installed on the upper surface of the first supporting plate;

[0009] The back plate is provided with an adjusting mechanism for adjusting the angle of the lifting plate, and the adjusting mechanism includes a second rotating shaft, a gear and a column fixedly connected to the upper surface of the bottom plate, the other end of the column is fixedly connected to the first reinforcement column, the outer surface of the second rotating shaft is rotatably connected to two symmetrical right-angle seats, and the two right-angle seats are respectively fixedly connected to the two first U-shaped slides, the outer surfaces of the second rotating shaft and the first rotating shaft are fixedly connected to two synchronous wheels, and the two synchronous wheels on the same side are connected by a synchronous belt transmission, the middle part of the second rotating shaft is rotatably connected to a shell, and the shell is slidably connected to the outer surface of the column and fixedly connected to the two right-angle seats, a one-way bearing is installed inside the gear, and the one-way bearing is installed on the outer surface of the second rotating shaft, the outer surface of the column is fixedly connected to a toothed plate matched with the gear, and a through groove matched with the toothed plate is opened on the shell.

[0010] Preferably, the lifting mechanism includes a first motor frame and two U-shaped seats, the first motor frame and the two U-shaped seats are fixedly connected to the upper surface of the first support plate, a dual-axis motor is installed on the first motor frame, two output ends of the dual-axis motor are fixedly connected to drive shafts, the ends of the two drive shafts that are away from each other are respectively rotatably connected to the inside of the two U-shaped seats, and the outer surface of the drive shaft located inside the U-shaped seat is fixedly connected to a winding roller.

[0011] Preferably, two fixed pulleys are rotatably mounted on the tops of the two right-angle frames, steel wire ropes are wound around the outer surfaces of the two winding rollers, and the other ends of the steel wire ropes pass through the fixed pulleys and are fixedly connected to the back plate.

[0012] Preferably, two second support plates are fixedly connected to the bottom surface of the back plate, two side baffles are fixedly connected to the front surface of the back plate, and the lifting plate is located between the two side baffles.

[0013] Preferably, the outer surface of the second rotating shaft is fixedly connected to two first rotating plates, the inner part of the shell is rotatably connected to a third rotating shaft, the outer surface of the third rotating shaft is fixedly connected to two cylinders, the outer surfaces of the two cylinders are fixedly connected to second rotating plates for blocking the first rotating plates, the inner parts of the two cylinders are fixedly connected to torsion springs, and the ends of the two torsion springs away from each other are fixedly connected to the inner wall of the shell.

[0014] Preferably, the upper surface of the shell is fixedly connected to a second support seat, the outer surface of the second support seat is fixedly connected to two sleeves and two springs, and the two springs are respectively located inside the two sleeves, the insides of the two sleeves are slidably connected with sleeve rods, the ends of the two sleeve rods that are close to each other are respectively fixedly connected to the ends of the two springs that are away from each other, the ends of the two sleeve rods that are away from each other are fixedly connected to the first triangular plates, and the first triangular plates are in contact with the upper surface of the shell, the bottom surfaces of the two first triangular plates are fixedly connected to pressure plates for blocking the second rotating plate, the inside of the shell is provided with a sliding groove matched with the pressure plate, and the two pressure plates pass through the sliding groove and are slidably connected to the inside of the shell.

[0015] Preferably, the adjustment mechanism also includes a U-shaped frame fixedly connected to the upper surface of the first support plate, a threaded rod is rotatably connected between the U-shaped frame and the second reinforcement column, a knob is fixedly connected to the bottom end of the threaded rod, a threaded block is threadedly connected to the outer surface of the threaded rod, a rectangular block is fixedly connected to a side of the threaded block close to the column, a second U-shaped slide is fixedly connected to a side of the rectangular block close to the column, and the second U-shaped slide is slidably connected to the outer surface of the column, and two second triangular plates that match the first triangular plates are fixedly connected to the bottom surface of the rectangular block.

[0016] Preferably, the rotating mechanism comprises a second motor frame fixedly connected to the upper surface of the base plate, a servo motor is mounted on the second motor frame, and an output end of the servo motor is fixedly connected to the first support plate.

[0017] Preferably, a plurality of support columns are fixedly connected to the bottom surface of the first support plate, a solid ball is fixedly connected to one end of each support column away from the first support plate, a track groove matching the solid ball is opened inside the bottom plate, and the solid ball is rotatably connected inside the track groove.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention provides an adjusting mechanism, which can automatically drive the lifting plate to rotate toward the back plate during the process of lifting the object, so as to achieve clamping and limiting the object. After the object is lifted to a specified height, the lifting plate can be automatically driven to rotate away from the back plate until it is reset, so that the staff can take the object on the back plate conveniently, thereby achieving stable lifting of the object without the need for an additional driving source, thereby reducing not only the cost of the lifting device, but also the load of the lifting mechanism, thereby increasing the life of the lifting mechanism while reducing the risk of its loss of control.

[0020] 2. The present invention can facilitate the adjustment of the height of the rectangular block and the second triangular plate through the cooperation among the U-shaped frame, the threaded rod, the knob, the second U-shaped slide plate and the threaded block, so that when the object is transported to the specified height, the lifting plate can be automatically driven to rotate in the direction away from the back plate until it is reset. By setting a one-way bearing, in the process of controlling the empty stroke of the lifting plate to the material-collecting location, when the gear and the tooth plate are in contact and meshing, the gear itself can be rotated without driving the second rotating shaft and the lifting plate to rotate accordingly, thereby ensuring that the lifting plate remains parallel when it travels empty to the material-collecting location, so as to facilitate the second lifting.

[0021] 3. The present invention can automatically control the rotation of the lifting mechanism, the lifting plate and the object by setting a rotating mechanism, so as to automatically adjust the lifting position of the object. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the connection between the threaded block and the rectangular block of the present invention;

[0024] Figure 3 is a cross-sectional view of the present invention;

[0025] Figure 4 It is a schematic diagram of the connection between the U-shaped seat and the winding roller of the present invention;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the back plate, lifting plate and angle adjustment mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the internal structure of the housing during the object lifting process of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection between the housing and the second support seat of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection between the first rotating plate and the second rotating plate during the object lifting process of the present invention;

[0030] Fig. 9 It is a schematic diagram of the internal structure of the cylinder of the present invention;

[0031] Fig.10 It is a schematic diagram of the internal structure of the sleeve of the present invention.

[0032] Fig.11 It is a schematic diagram of the internal structure of the shell before object lifting of the present invention.

[0033] In the figure: 1, bottom plate; 2, first support plate; 3, right angle frame; 4, first motor frame; 5, double-axis motor; 6, U-shaped seat; 7, drive shaft; 8, winding roller; 9, fixed pulley; 10, back plate; 11, first support seat; 12, first rotating shaft; 13, rotating roller; 14, lifting plate; 15, side baffle; 16, second support plate; 17, first U-shaped slide plate; 18, right angle seat; 19, second rotating shaft; 20, synchronous wheel; 21, housing; 22, one-way bearing; 23, gear; 24, tooth plate ; 25. column; 26. solid ball; 27. track groove; 28. first rotating plate; 29. ​​third rotating shaft; 30. cylinder; 31. second rotating plate; 32. torsion spring; 33. second supporting seat; 34. sleeve; 35. sleeve rod; 36. first triangular plate; 37. spring; 38. pressure plate; 39. U-shaped frame; 40. threaded rod; 41. threaded block; 42. rectangular block; 43. second U-shaped slide plate; 44. second triangular plate; 45. second motor frame; 46. servo motor; 47. supporting column. DETAILED DESCRIPTION

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0035] A mechanical lifting device with an adjustable angle, such as Figure 1 , Figure 2 and Figure 5As shown, it includes a bottom plate 1, a first support plate 2 and a back plate 10, the bottom plate 1 and the first support plate 2 are connected by a rotating mechanism, two symmetrical right-angle frames 3 are fixedly connected to the upper surface of the bottom plate 1, a first reinforcement column and a second reinforcement column are fixedly connected between the two right-angle frames 3, two first U-shaped slide plates 17 are fixedly connected to the side of the back plate 10 close to the right-angle frame 3, the two first U-shaped slide plates 17 are respectively slidably connected to the outer surfaces of the two right-angle frames 3, and two symmetrical first support seats 11 are fixedly connected to the side of the back plate 10 away from the right-angle frame 3, and a first rotating shaft 12 is rotatably installed between the two first support seats 11. The outer surface of the first rotating shaft 12 located between the two first supporting seats 11 is fixedly connected with a rotating roller 13, and the outer surface of the rotating roller 13 is fixedly connected with a lifting plate 14. Mounting holes are provided at the four corners of the bottom plate 1, so that the bottom plate 1 can be fixed on the ground more stably. When the object to be lifted is placed on the lifting plate 14 and the lifting plate 14 is controlled to rotate toward the back plate 10, the rotating roller 13 will rotate accordingly and drive the object to move upward along the back plate 10 for a distance. Since the angle between the back plate 10 and the rotating roller 13 is large, the object will not be stuck at the angle.

[0036] As attached Figure 1 , Figure 2 and Figure 4 As shown, a lifting mechanism for adjusting the height of the lifting plate 14 is installed on the upper surface of the first support plate 2, and the lifting mechanism includes a first motor frame 4 and two U-shaped seats 6, the first motor frame 4 and the two U-shaped seats 6 are fixedly connected to the upper surface of the first support plate 2, and a double-axis motor 5 is installed on the first motor frame 4, and the two output ends of the double-axis motor 5 are fixedly connected to the driving shaft 7, and the ends of the two driving shafts 7 that are away from each other are respectively rotatably connected to the inside of the two U-shaped seats 6, and the outer surface of the driving shaft 7 located in the inner part of the U-shaped seat 6 is fixedly connected to the winding roller 8. When the double-axis motor 5 is started, the two winding rollers 8 can be driven to rotate synchronously.

[0037] As attached Figure 1 and Figure 2 As shown, two fixed pulleys 9 are rotatably installed on the top of the two right-angle frames 3, and the outer surfaces of the two winding rollers 8 are wound with steel wire ropes, and the other ends of the steel wire ropes pass through the fixed pulleys 9 and are fixedly connected to the back plate 10. The fixed pulleys 9 are located at the corners of the right-angle frames 3, and the interior of the right-angle frames 3 is provided with avoidance grooves adapted to the fixed pulleys 9. When the two winding rollers 8 are controlled to rotate forward, the steel wire ropes can be wound, and when the steel wire ropes are wound, the back plate 10 can be driven to move upward. When the two winding rollers 8 are controlled to rotate in the opposite direction, the steel wire ropes can be released, and when the steel wire ropes are released, the back plate 10 will move downward under the action of gravity.

[0038] As attached Figure 1 , Figure 3 , Figure 5 , Figure 6 and Fig.11 As shown, an adjustment mechanism for adjusting the angle of the lifting plate 14 is provided on the back plate 10, and the adjustment mechanism includes a second rotating shaft 19, a gear 23 and a column 25 fixedly connected to the upper surface of the bottom plate 1, the other end of the column 25 is fixedly connected to the first reinforcement column, the outer surface of the second rotating shaft 19 is rotatably connected to two symmetrical right-angle seats 18, and the two right-angle seats 18 are respectively fixedly connected to the two first U-shaped slide plates 17, the outer surfaces of the second rotating shaft 19 and the first rotating shaft 12 are both fixedly connected to two synchronous wheels 20, and the two synchronous wheels 20 on the same side are connected by a synchronous belt transmission, the middle part of the second rotating shaft 19 is rotatably connected to a shell 21, and the shell 21 is slidably connected to the outer surface of the column 25, a one-way bearing 22 is installed inside the gear 23, and the one-way bearing 22 is fixedly installed on the outer surface of the second rotating shaft 19, the outer surface of the column 25 is fixedly connected to a toothed plate 24 adapted to the gear 23, and the shell 21 is provided with a toothed plate 24 adapted to the toothed plate 24 When the lifting plate 14 is in the initial position, the gear 23 is located below the toothed plate 24. When the lifting mechanism drives the back plate 10 to move upward, the back plate 10 will drive the lifting plate 14, the shell 21 and the gear 23 to move upward. When the gear 23 moves to mesh with the toothed plate 24, the gear 23 continues to move upward and rotates counterclockwise. The counterclockwise rotation of the gear 23 can drive the one-way bearing 22, the second rotating shaft 19, the synchronous wheel 20 and the lifting plate 14 to rotate accordingly, thereby realizing the adjustment of the angle between the lifting plate 14 and the back plate 10. In the process of controlling the empty stroke of the lifting plate 14 to the material picking location, when the gear 23 contacts and meshes with the toothed plate 24, due to the unidirectional rotation characteristic of the one-way bearing 22, the gear 23 will only rotate itself at this time, and will not drive the second rotating shaft 19 and the lifting plate 14 to rotate accordingly, thereby ensuring that the lifting plate 14 remains parallel when it is in the empty stroke to the material picking location.

[0039] As attached Figure 6 , Figure 8 , Fig. 9 and Fig.11As shown, the outer surface of the second rotating shaft 19 is fixedly connected to two first rotating plates 28, the interior of the shell 21 is rotatably connected to the third rotating shaft 29, the outer surface of the third rotating shaft 29 is fixedly connected to two cylinders 30, the outer surfaces of the two cylinders 30 are fixedly connected to the second rotating plates 31 for blocking the first rotating plates 28, the interiors of the two cylinders 30 are fixedly connected to torsion springs 32, the ends of the two torsion springs 32 that are away from each other are fixedly connected to the inner wall of the shell 21, when the second rotating shaft 19 rotates counterclockwise, the first rotating plate 28 can be driven to rotate counterclockwise, and the first rotating plate 28 can press the second rotating plate 31, the third rotating shaft 29 and the cylinder 30 to rotate downward. The cylinder 30 will drive the torsion spring 32 to deform downward. When the first rotating plate 28 rotates to below the second rotating plate 31, under the action of the torsion spring 32, the second rotating plate 31 and the third rotating shaft 29 will automatically reset. At this time, the first rotating plate 28 is parallel to the second rotating plate 31, and the bottom surface of the second rotating plate 31 is in contact with the upper surface of the first rotating plate 28, so that the second rotating plate 31 can block the first rotating plate 28. When the second rotating plate 31 loses its blocking force, under the action of the gravity of the object and the lifting plate 14, the first rotating plate 28 will rotate clockwise until it is reset. At this time, the second rotating plate 31 only plays a buffering role and will not affect the reset of the first rotating plate 28.

[0040] As attached Figure 5 , Figure 6 , Figure 7 , Fig.10 and Fig.11 As shown, the upper surface of the shell 21 is fixedly connected with a second support seat 33, and the outer surface of the second support seat 33 is fixedly connected with two sleeves 34 and two springs 37, and the two springs 37 are respectively located inside the two sleeves 34, and the interiors of the two sleeves 34 are slidably connected with sleeve rods 35, and the ends of the two sleeve rods 35 that are close to each other are respectively fixedly connected with the ends of the two springs 37 that are away from each other, and the ends of the two sleeve rods 35 that are away from each other are fixedly connected with first triangular plates 36, and the first triangular plates 36 are in contact with the upper surface of the shell 21, and the bottom surfaces of the two first triangular plates 36 are fixedly connected with pressure plates 38 for blocking the second rotating plate 31, and the interior of the shell 21 is provided with a sliding groove adapted to the pressure plates 38, and the two pressure plates 38 pass through the sliding groove and are slidably connected to the interior of the shell 21. In the process of lifting the object, the pressure plate 38 will press the upper surface of the second rotating plate 31 to prevent the first rotating plate 28 from rotating counterclockwise against the second rotating plate 31.

[0041] As attached Figure 1 , Figure 2 and Figure 5As shown, the adjustment mechanism also includes a U-shaped frame 39 fixedly connected to the upper surface of the first support plate 2, a threaded rod 40 is rotatably connected between the U-shaped frame 39 and the second reinforcement column, a knob is fixedly connected to the bottom end of the threaded rod 40, a threaded block 41 is threadedly connected to the outer surface of the threaded rod 40, a rectangular block 42 is fixedly connected to the side of the threaded block 41 close to the column 25, a second U-shaped slide plate 43 is fixedly connected to the side of the rectangular block 42 close to the column 25, and the second U-shaped slide plate 43 is slidably connected to the outer surface of the column 25, and two second triangular plates 44 adapted to the first triangular plate 36 are fixedly connected to the bottom surface of the rectangular block 42. By turning the knob, the threaded rod 40 can be driven to rotate, and the rotation of the threaded rod 40 can drive The movable thread block 41, the rectangular block 42, the second U-shaped slide plate 43 and the two second triangular plates 44 move up and down along the thread block 41, so as to adjust the height of the second triangular plates 44. When the shell 21 drives the first triangular plate 36 to move upward until it contacts the second triangular plate 44, continuing to move the second triangular plate 44 upward will squeeze the first triangular plate 36 to move inward. The movement of the first triangular plate 36 can drive the sleeve rod 35 and the pressure plate 38 to move accordingly and compress the spring 37. When the pressure plate 38 moves to no longer contact the second rotating plate 31, it no longer blocks the second rotating plate 31, and then the first rotating plate 28 can lift the second rotating plate 31 upward and rotate to reset.

[0042] As attached Figure 3 As shown, the rotating mechanism includes a second motor frame 45 fixedly connected to the upper surface of the base plate 1, and a servo motor 46 is installed on the second motor frame 45. The output end of the servo motor 46 is fixedly connected to the first support plate 2. When the servo motor 46 is started, the servo motor 46 can drive the first support plate 2, the lifting mechanism and the lifting plate 14 to rotate, thereby adjusting the lifting direction of the object.

[0043] As attached Figure 4 As shown, a plurality of support columns 47 are fixedly connected to the bottom surface of the first support plate 2, and a solid ball 26 is fixedly connected to one end of each support column 47 away from the first support plate 2. A track groove 27 adapted to the solid ball 26 is provided inside the bottom plate 1, and the solid ball 26 is rotatably connected inside the track groove 27. Through the cooperation among the support columns 47, the solid ball 26 and the track groove 27, the rotation of the first support plate 2 is not affected while effectively supporting the first support plate 2.

[0044] As attached Figure 5 As shown, two second support plates 16 are fixedly connected to the bottom surface of the back plate 10, two side baffles 15 are fixedly connected to the front surface of the back plate 10, and the lifting plate 14 is located between the two side baffles 15. The second support plates 16 can support the lifting plate 14 in a horizontal state, and the side baffles 15 can prevent objects on the lifting plate 14 from falling from both sides.

[0045] Working principle: When lifting an object, first adjust the height of the second triangular plate 44 according to the height to be transported of the object, then place the object on the lifting plate 14, and then start the dual-axis motor 5 to control the reel 8 to rotate forward. The reel 8 rotates forward to reel in the wire rope, and the reeled wire rope can pull the back plate 10, the lifting plate 14, the housing 21, the gear 23 and the object upward. When the gear 23 moves to mesh with the tooth plate 24, the gear 23 continues to move upward while rotating counterclockwise. The gear 23 rotates counterclockwise. The rotation can drive the one-way bearing 22, the second rotating shaft 19, the synchronous wheel 20, the first rotating plate 28 and the lifting plate 14 to rotate accordingly. The counterclockwise rotation of the first rotating plate 28 can press the second rotating plate 31, the third rotating shaft 29 and the cylinder 30 to rotate clockwise. The clockwise rotation of the cylinder 30 will drive the torsion spring 32 to deform. When the first rotating plate 28 rotates to the bottom of the second rotating plate 31, under the action of the torsion spring 32, the second rotating plate 31 and the third rotating shaft 29 will automatically reset. At this time, the first rotating plate 28 is parallel to the second rotating plate 31, and the second rotating plate 31 is parallel to the second rotating plate 31. The bottom surface of the first rotating plate 31 contacts the upper surface of the first rotating plate 28, so that the second rotating plate 31 can block the first rotating plate 28, and then the lifting plate 14 and the back plate 10 will always hold the object during the lifting process. When the shell 21 drives the first triangular plate 36 to move upward until it contacts the second triangular plate 44, the second triangular plate 44 continues to move upward, which squeezes the first triangular plate 36 to move inward. The movement of the first triangular plate 36 can drive the sleeve rod 35 and the pressure plate 38 to move accordingly and compress the spring 37. When the pressure plate 38 moves to the point where it is not in contact with the second rotating plate When the plates 31 are in contact, the second rotating plate 31 is no longer blocked. Then, under the action of the gravity of the object and the lifting plate 14, the first rotating plate 28 can lift the second rotating plate 31 upward and rotate to its original position. At this time, it is convenient for the staff to remove the objects on the lifting plate 14. Then, the dual-axis motor 5 controls the winding roller 8 to release the wire rope. Under the action of gravity, the lifting plate 14, the back plate 10 and the shell 21 will move downward, and the first triangular plate 36 that has lost the extrusion force will also be reset under the action of the spring 37, so that the pressure plate 38 will continue to press on the upper surface of the second rotating plate 31.

[0046] In the process of controlling the lifting plate 14 to move downward to the material-collecting location, when the gear 23 and the tooth plate 24 are in contact and meshing, due to the unidirectional rotation characteristics of the one-way bearing 22, the gear 23 will only rotate itself, and will not drive the second rotating shaft 19 and the lifting plate 14 to rotate accordingly, thereby ensuring that the lifting plate 14 remains parallel during the idle travel to the material-collecting location to facilitate the second lifting.

[0047] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A mechanical lifting device with an angle adjustable function, comprising a base plate (1), a first support plate (2) and a back plate (10), characterized in that: The bottom plate (1) and the first support plate (2) are connected via a rotating mechanism, the upper surface of the bottom plate (1) is fixedly connected to two symmetrical right-angle frames (3), a first reinforcement column and a second reinforcement column are fixedly connected between the two right-angle frames (3), a side of the back plate (10) close to the right-angle frame (3) is fixedly connected to two first U-shaped slide plates (17), the two first U-shaped slide plates (17) are respectively slidably connected to the outer surfaces of the two right-angle frames (3), a side of the back plate (10) away from the right-angle frame (3) is fixedly connected to two symmetrical first support seats (11), a first rotating shaft (12) is rotatably installed between the two first support seats (11), a rotating roller (13) is fixedly connected to the outer surface of the first rotating shaft (12) located between the two first support seats (11), a lifting plate (14) is fixedly connected to the outer surface of the rotating roller (13), and a lifting mechanism for adjusting the height of the lifting plate (14) is installed on the upper surface of the first support plate (2); The back plate (10) is provided with an adjustment mechanism for adjusting the angle of the lifting plate (14), the adjustment mechanism comprising a second rotating shaft (19), a gear (23) and a column (25) fixedly connected to the upper surface of the bottom plate (1), the other end of the column (25) being fixedly connected to the first reinforcement column, the outer surface of the second rotating shaft (19) being rotatably connected to two symmetrical right-angle seats (18), the two right-angle seats (18) being respectively fixedly connected to the two first U-shaped slide plates (17), the outer surfaces of the second rotating shaft (19) and the first rotating shaft (12) being fixedly connected to two synchronous wheels ( 20), and the two synchronous wheels (20) on the same side are connected by a synchronous belt transmission, the middle part of the second rotating shaft (19) is rotatably connected with a housing (21), and the housing (21) is slidably connected to the outer surface of the column (25) and fixedly connected to the two right-angle seats (18), a one-way bearing (22) is installed inside the gear (23), and the one-way bearing (22) is installed on the outer surface of the second rotating shaft (19), the outer surface of the column (25) is fixedly connected with a toothed plate (24) adapted to the gear (23), and a through groove adapted to the toothed plate (24) is opened on the housing (21); The lifting mechanism comprises a first motor frame (4) and two U-shaped seats (6), the first motor frame (4) and the two U-shaped seats (6) are both fixedly connected to the upper surface of the first support plate (2), a double-axis motor (5) is installed on the first motor frame (4), two output ends of the double-axis motor (5) are both fixedly connected to drive shafts (7), the ends of the two drive shafts (7) that are away from each other are respectively rotatably connected to the inside of the two U-shaped seats (6), and the outer surface of the drive shaft (7) located inside the U-shaped seat (6) is fixedly connected to a winding roller (8); Two fixed pulleys (9) are rotatably mounted on the tops of the two right-angle frames (3), steel wire ropes are wound around the outer surfaces of the two winding rollers (8), and the other ends of the steel wire ropes pass through the fixed pulleys (9) and are fixedly connected to the back plate (10); The outer surface of the second rotating shaft (19) is fixedly connected to two first rotating plates (28); the interior of the shell (21) is rotatably connected to a third rotating shaft (29); the outer surface of the third rotating shaft (29) is fixedly connected to two cylinders (30); the outer surfaces of the two cylinders (30) are fixedly connected to second rotating plates (31) for blocking the first rotating plates (28); the interiors of the two cylinders (30) are fixedly connected to torsion springs (32); the ends of the two torsion springs (32) that are away from each other are fixedly connected to the inner wall of the shell (21); The upper surface of the shell (21) is fixedly connected with a second support seat (33), the outer surface of the second support seat (33) is fixedly connected with two sleeves (34) and two springs (37), and the two springs (37) are respectively located inside the two sleeves (34), and the insides of the two sleeves (34) are slidably connected with sleeve rods (35), and the ends of the two sleeve rods (35) that are close to each other are respectively fixedly connected with the ends of the two springs (37) that are away from each other, and the ends of the two sleeve rods (35) that are away from each other are fixedly connected with a first triangular plate (36), and the first triangular plates (36) are in contact with the upper surface of the shell (21), and the bottom surfaces of the two first triangular plates (36) are fixedly connected with a pressure plate (38) for blocking the second rotating plate (31), and a sliding groove adapted to the pressure plate (38) is opened inside the shell (21), and the two pressure plates (38) pass through the sliding groove and are slidably connected to the inside of the shell (21); The adjustment mechanism also includes a U-shaped frame (39) fixedly connected to the upper surface of the first support plate (2); a threaded rod (40) is rotatably connected between the U-shaped frame (39) and the second reinforcement column; a knob is fixedly connected to the bottom end of the threaded rod (40); a threaded block (41) is threadedly connected to the outer surface of the threaded rod (40); a rectangular block (42) is fixedly connected to a side of the threaded block (41) close to the column (25); a second U-shaped slide plate (43) is fixedly connected to a side of the rectangular block (42) close to the column (25); and the second U-shaped slide plate (43) is slidably connected to the outer surface of the column (25); and two second triangular plates (44) adapted to the first triangular plates (36) are fixedly connected to the bottom surface of the rectangular block (42).

2. A mechanical lifting device with an adjustable angle according to claim 1, characterized in that: The bottom surface of the back plate (10) is fixedly connected to two second support plates (16), the front surface of the back plate (10) is fixedly connected to two side baffles (15), and the lifting plate (14) is located between the two side baffles (15).

3. A mechanical lifting device with an adjustable angle according to claim 2, characterized in that: The rotating mechanism comprises a second motor frame (45) fixedly connected to the upper surface of the base plate (1), a servo motor (46) being mounted on the second motor frame (45), and an output end of the servo motor (46) being fixedly connected to the first support plate (2).

4. A mechanical lifting device with an adjustable angle according to claim 3, characterized in that: The bottom surface of the first support plate (2) is fixedly connected to a plurality of support columns (47), one end of each support column (47) away from the first support plate (2) is fixedly connected to a solid ball (26), a track groove (27) adapted to the solid ball (26) is provided inside the bottom plate (1), and the solid ball (26) is rotatably connected inside the track groove (27).

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