Double-beam cantilever crane

Abstract

The invention relates to the technical field of cranes, and discloses a double-beam cantilever crane which comprises a bottom plate, a control plate is fixedly connected to the surface of the bottom plate, a balance block is fixedly connected to the surface of the side, close to the control plate, of the bottom plate, a motor is fixedly connected to the top of the balance block, and a lifting rod is fixedly connected to the inner wall of the bottom plate; a hook is arranged on the side, away from the balance block, of the bottom plate, the four lifting rods are divided into two sets, the number of the lifting rods in each set is two, and the two sets of lifting rods are symmetrically distributed relative to the surface of the bottom plate. When the device is used, after the control panel controls the lifting rod to ascend and descend to the needed position, if the height is still not enough at the moment, the motor is started in the moving part at the moment, the transmission rod can be driven to rotate, the transmission rod can drive the threaded rotating rod to operate, and the threaded rotating rod drives the internal threaded sliding block to operate along the threaded rotating rod through threaded connection of the inner wall.

Description

Technical Field

[0001] The invention relates to the technical field of crane equipment, in particular to a double-beam cantilever crane. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range. It is also called a crane. With the continuous development of my country's economy, the application scope and use areas of cranes are becoming more and more extensive. There are many types of cranes, and the double-beam cantilever crane is one of them.

[0003] Existing double-beam cantilever cranes often use drive equipment to drive the spreader to move the goods for transportation through the spreader and other equipment. Most of the drive equipment drives the pulley to rotate through multiple motors, and drives the spreader to move through the friction between the pulley and the slide. The pulley needs to be replaced regularly, and the cost is relatively increased. Summary of the invention

[0004] The object of the present invention is to provide a double-beam cantilever crane to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a double-beam cantilever crane, comprising a bottom plate, a control panel is fixedly connected to the surface of the bottom plate, a balance block is fixedly connected to the surface of the bottom plate on the side close to the control panel, a motor is fixedly connected to the top of the balance block, a lifting rod is fixedly connected to the inner wall of the bottom plate, a hook is arranged on the side of the bottom plate away from the balance block, four lifting rods are arranged, the four lifting rods are divided into two groups, and the number of each group is arranged in two groups, and the two groups of lifting rods are symmetrically distributed on the surface of the bottom plate, and further comprising: A moving part, the moving part comprises an output rod, the end surface of the output rod is fixedly connected to a line collection rod, and the surface of the line collection rod is rotatably connected to a line collection box; An auxiliary component, the auxiliary component comprises a transverse groove plate, the inner wall of the transverse groove plate is provided with a transverse groove, and the surface of the transverse groove is provided with a hydraulic lifting rod; The protective component comprises a gear, a surface of the gear is meshingly connected with a toothed plate, and an end surface of the toothed plate away from one end of the gear is fixedly connected with a fixing plate.

[0006] Furthermore, the moving part includes a stretching wire, the surface of the stretching wire is rotatably connected to a steering rod, the end face of the steering rod is rotatably connected to a steering rod column, the surface of the stretching wire away from the steering rod is rotatably connected to a wire pulling rod, the surface of the wire pulling rod is rotatably connected to a wire pulling turntable, the surface of the wire collection rod passes through the inner wall of the wire collection box, and the surface of the wire collection rod is fixedly connected to the end face of the stretching wire away from the wire pulling rod.

[0007] Furthermore, the end surface of the stretching line close to one end of the steering rod is fixedly connected to a connecting plate, the end surface of the connecting plate is fixedly connected to a gear shaft, the end surface of the gear shaft away from one end of the connecting plate is fixedly connected to an inner lifting plate, the surface of the inner lifting plate is slidably connected to an outer lifting plate, the inner wall of the outer lifting plate close to one end of the steering rod is rotatably connected to a lifting plate shaft, and the surface of the lifting plate shaft is rotatably connected to a lifting plate shaft seat; The number of the steering rod columns is set to two, and the two steering rod columns are symmetrically distributed on the surface of the outer lifting plate. The end face of the steering rod column away from the steering rotating rod is fixedly connected to the surface of the outer lifting plate, the end face of the wire pull turntable away from the wire pull rotating rod is fixedly connected to the surface of the outer lifting plate, and the end face of the inner lifting plate away from the gear shaft is fixedly connected to the end face of the hook.

[0008] Furthermore, a lifting plate rotating shaft is fixedly connected to the surface of the outer lifting plate, a lifting plate push rod is rotatably connected to the surface of the lifting plate rotating shaft, a lifting plate connecting shaft is rotatably connected to the inner wall of the lifting plate push rod away from one end of the lifting plate rotating shaft, an internal threaded slider is fixedly connected to the end surface of the lifting plate connecting shaft, a threaded rotating rod is threadedly connected to the inner wall of the internal threaded slider, and a transmission rod is fixedly connected to the end surface of the threaded rotating rod away from one end of the internal threaded slider; There are two lifting plate rotating shafts, and the two lifting plate rotating shafts are symmetrically distributed on the surface of the lifting plate. The surface of the threaded rotating rod penetrates the inner wall of the base plate to the end face of the transmission rod, and the inner wall of the base plate is rotatably connected. There are two lifting plate connecting shafts, and the two lifting plate connecting shafts are symmetrically distributed on the surface of the internal threaded slider.

[0009] Furthermore, the auxiliary component includes a transverse sliding plate, the end surface of the hydraulic lifting rod away from the transverse sliding plate is fixedly connected to an inner stretching plate, the surface of the inner stretching plate is fixedly connected to an arc plate, and the surface of the arc plate is rotatably connected to an arc plate rotating rod; There are two transverse groove plates, which are symmetrically distributed on the surface of the transverse sliding plate. The bottom end of the transverse groove plate is fixedly connected to the top of each group of lifting rods. There are two arc plates, which are symmetrically distributed on the surface of the inner stretching plate. The end face of the arc plate rotating rod away from one end of the arc plate is rotatably connected to the surface of the transverse groove plate, and the inner wall of the transverse sliding plate away from one end of the transverse groove plate is in contact with the surface of the outer lifting plate.

[0010] Furthermore, the end face of the arc plate away from one end of the inner stretching plate is fixedly connected to an arc plate pull block, the surface of the arc plate pull block is slidably connected to an arc plate pull groove, the end face of the arc plate pull block away from one end of the arc plate is fixedly connected to a positioning rack, and the bottom end of the arc plate pull groove is fixedly connected to the surface of the outer lifting plate.

[0011] Furthermore, the protective component includes a connecting cross plate, the end face of the connecting cross plate is fixedly connected with a protective lifting rod, the number of the gears is set to two, and the two gears are symmetrically distributed on the surface of the wire collection rod, the surface of the connecting cross plate is fixedly connected to the surfaces of two fixed plates, the number of the protective lifting rods is set to two, and the two protective lifting rods are symmetrically distributed on the surface of the connecting cross plate, and the end face of the protective lifting rod away from one end of the connecting cross plate is fixedly connected to the bottom end of the base plate.

[0012] Furthermore, the surface of the threaded rotating rod close to one end of the motor is fixedly connected to the output bevel gear, the surface of the output bevel gear is meshingly connected to the threaded bevel gear, the end surface of the threaded bevel gear away from the output bevel gear is fixedly connected to a threaded lifting rod, the end surface of the threaded lifting rod away from the balance block is fixedly connected to a pressure plate, the surface of the threaded lifting rod passes through the inner wall of the base plate and is rotatably connected to the inner wall of the base plate.

[0013] The present invention has the following beneficial effects: When the present invention is in use, after the control panel controls the lifting rod to move to the required position, if the height is still not enough at this time, the motor is started in the moving part, which will drive the transmission rod to rotate and operate, and the transmission rod will drive the threaded rotating rod to operate, and the threaded rotating rod is connected through the thread of the inner wall, driving the internal threaded slider to operate along the threaded rotating rod, and when the internal threaded slider is operating, it will drive the lifting plate connecting shaft to operate, and the lifting plate connecting shaft will rotate through the surface, which will drive the lifting plate push rod to rotate along the surface of the lifting plate connecting shaft, and at the same time drive the other end of the lifting plate push rod to move up and down, and the other end of the lifting plate push rod will rotate along the surface of the lifting plate rotating shaft, and drive the lifting plate rotating shaft to move up and down, and when the lifting plate rotating shaft is moving up and down, it will drive the outer When the lifting plate is running, the outer lifting plate will drive the inner lifting plate to move up and down. At the same time, the engine starts and drives the output rod to move. The output rod will drive the wire collection rod to move along the inner wall of the wire collection box. When the wire collection rod is running, it will drive the stretching wire to stretch. When the stretching wire is running, it will first rotate along the surface of the steering rod to increase the surface friction of the stretching wire, which can better stretch it and prevent it from being damaged due to excessive force. After that, it will rotate along the surface of the wire pulling rod, and finally drive the connecting plate to move. When the connecting plate is running, it will drive the gear shaft to move, and the gear shaft will drive the inner lifting plate to move up and down. Finally, when the inner lifting plate moves to the required position, the operating hook will transport the required items.

[0014] When the present invention is in use, in the auxiliary component, when the motor runs, the hydraulic lifting rod will run, and when the hydraulic lifting rod runs, it will drive the cross slide to run along the cross groove, and when the cross slide runs, the inner wall of the other end of the cross slide contacts the surface of the outer lifting plate, and when the outer lifting plate is lifted and lowered, the surface of the outer lifting plate is pushed up by extrusion to assist it to run better and protect it from damage. At the same time, when the inner lifting plate runs to the required position, the inner stretching plate starts to drive the arc plate to run, and the arc plate will run along the inner wall of the arc plate rotating rod, and at the same time, the arc plate will drive the arc plate pulling block at the other end to run along the inner wall of the arc plate pulling groove, and the arc plate pulling block will drive the positioning rack to run, and finally the surface of the positioning rack will be fixed to the surface of the gear shaft, and its orientation will be fixed to prevent it from falling, thereby protecting its lifting and lowering.

[0015] When the present invention is in operation, in the protective component, when the threaded rotating rod is in operation, it will drive the output bevel gear to rotate, and the output bevel gear drives the threaded bevel gear to operate through the surface meshing action, and the threaded bevel gear will drive the threaded lifting rod to perform threaded lifting and lowering operation, and the threaded lifting rod will first perform threaded rotation, and when it rises to a certain height, it will perform lifting and extrusion operation, and when the threaded lifting rod performs lifting and extrusion operation, it will drive the pressing plate to perform extrusion operation, and through the fixing ability of the pressing plate, it can be operated more stably, and the device is balanced by the gravity of the motor, and at the same time, when the line collection rod is in operation, it will drive the gear to operate, and the gear will drive the tooth plate to operate through the surface meshing action, and when the tooth plate is in operation, it will drive the fixed plate to operate, and the fixed plate will drive the connecting cross plate to operate, and when the connecting cross plate is in operation, it will drive the protective lifting rod to operate, and the protective lifting rod will be squeezed, and it will be protected by the reaction force with the bottom plate surface.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the structure of the moving parts of the present invention; Figure 4 For the present invention Figure 3 A magnified view of part A in FIG. Figure 5 It is a schematic diagram of the auxiliary component structure of the present invention; Figure 6 For the present invention Figure 5 A magnified view of part B in FIG. Figure 7 It is a schematic diagram of the overall protective component of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of section C in .

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. moving parts; 2. auxiliary parts; 3. protective parts; 4. engine; 5. motor; 6. bottom plate; 7. control panel; 8. balance block; 9. lifting rod; 10. hook; 11. output rod; 12. wire collection rod; 13. wire collection box; 14. stretching wire; 15. steering rod; 16. steering rod column; 17. wire pulling rod; 18. wire pulling turntable; 19. lifting plate shaft; 20. outer lifting plate; 21. inner lifting plate; 22. gear shaft; 23. connecting plate; 24. lifting plate shaft; 25. lifting plate shaft seat; 26. transmission Rod; 27, threaded rotating rod; 28, internal threaded slider; 29, lifting plate connecting shaft; 30, lifting plate push rod; 31, horizontal groove plate; 32, horizontal groove; 33, hydraulic lifting rod; 34, horizontal sliding plate; 35, inner stretching plate; 36, arc plate; 37, arc plate rotating rod; 38, arc plate pulling block; 39, arc plate drawing groove; 40, positioning rack; 51, gear; 52, gear plate; 53, fixed plate; 54, connecting horizontal plate; 55, protective lifting rod; 56, threaded lifting rod; 57, pressure plate; 58, output helical gear; 59, threaded helical gear. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 8As shown, the present invention is a double-beam cantilever crane, comprising a bottom plate 6, a control panel 7 is fixedly connected to the surface of the bottom plate 6, a balance block 8 is fixedly connected to the surface of the bottom plate 6 near the control panel 7, a motor 5 is fixedly connected to the top of the balance block 8, a lifting rod 9 is fixedly connected to the inner wall of the bottom plate 6, after the control panel 7 controls the lifting rod 9 to move to a desired position, a hook 10 is arranged on the side of the bottom plate 6 away from the balance block 8, the number of the lifting rods 9 is four, the four lifting rods 9 are divided into two groups, and the number of each group is two, and the two groups of lifting rods 9 are symmetrically distributed on the surface of the bottom plate 6, and also include: The moving part 1 includes an output rod 11. When the engine 4 is started, the output rod 11 is driven to run, and the output rod 11 drives the wire collection rod 12 to run along the inner wall of the wire collection box 13. The end face of the output rod 11 is fixedly connected with the wire collection rod 12. When the wire collection rod 12 runs, it drives the stretching wire 14 to run in a stretching manner. The surface of the wire collection rod 12 is rotatably connected with the wire collection box 13. The auxiliary component 2 includes a transverse groove plate 31, the inner wall of the transverse groove plate 31 is provided with a transverse groove 32, and the surface of the transverse groove 32 is provided with a hydraulic lifting rod 33. When the motor 5 is running, the hydraulic lifting rod 33 will run, and when the hydraulic lifting rod 33 is running, it will drive the transverse sliding plate 34 to run along the transverse groove 32; The protective component 3 includes a gear 51. When the cable collection rod 12 is in operation, the gear 51 is driven to operate. The gear 51 drives the toothed plate 52 to operate through surface meshing. The surface of the gear 51 is meshed with the toothed plate 52. When the toothed plate 52 is in operation, the fixed plate 53 is driven to operate. The end surface of the toothed plate 52 away from the gear 51 is fixedly connected with the fixed plate 53. The fixed plate 53 drives the connecting cross plate 54 to operate.

[0022] The moving component 1 includes a stretching wire 14. When the stretching wire 14 is running, it will first rotate along the surface of the steering rod 15 to increase the surface friction of the stretching wire 14, which can better stretch it and prevent it from being damaged due to excessive force. The surface of the stretching wire 14 is rotationally connected to the steering rod 15, and the end face of the steering rod 15 is rotationally connected to the steering rod column 16. The surface of the stretching wire 14 away from the steering rod 15 is rotationally connected to the wire pulling rod 17, and then it will rotate along the surface of the wire pulling rod 17, which will eventually drive the connecting plate 23 to run. The surface of the wire pulling rod 17 is rotationally connected to the wire pulling turntable 18, and the surface of the wire collection rod 12 penetrates the inner wall of the wire collection box 13, and the surface of the wire collection rod 12 is fixedly connected to the end face of the stretching wire 14 away from the wire pulling rod 17.

[0023] The end surface of the stretching line 14 close to the steering rod 15 is fixedly connected with a connecting plate 23. When the connecting plate 23 runs, it will drive the gear shaft 22 to run. The end surface of the connecting plate 23 is fixedly connected with the gear shaft 22. The gear shaft 22 will drive the inner lifting plate 21 to move up and down. Finally, when the inner lifting plate 21 runs to the required position, the operating hook 10 transports the required items. The end surface of the gear shaft 22 away from the connecting plate 23 is fixedly connected with the inner lifting plate 21. The surface of the inner lifting plate 21 is slidably connected with the outer lifting plate 20. The inner wall of the outer lifting plate 20 close to the steering rod 15 is rotatably connected with the lifting plate shaft 24. The surface of the lifting plate shaft 24 is rotatably connected with the lifting plate shaft seat 25. There are two steering rod columns 16, and the two steering rod columns 16 are symmetrically distributed on the surface of the outer lifting plate 20. The end face of the steering rod column 16 away from the steering rotating rod 15 is fixedly connected to the surface of the outer lifting plate 20, the end face of the wire pull turntable 18 away from the wire pull rotating rod 17 is fixedly connected to the surface of the outer lifting plate 20, and the end face of the inner lifting plate 21 away from the gear shaft 22 is fixedly connected to the end face of the hook 10.

[0024] The surface of the outer lifting plate 20 is fixedly connected with the lifting plate shaft 19. When the lifting plate shaft 19 is lifted and lowered, the outer lifting plate 20 will be driven to move, and the outer lifting plate 20 will drive the inner lifting plate 21 to lift and lower. The other end of the lifting plate push rod 30 will rotate along the surface of the lifting plate shaft 19 and drive the lifting plate shaft 19 to lift and lower. The lifting plate push rod 30 rotates on the surface of the lifting plate shaft 19, and the lifting plate push rod 30 rotates on the inner wall away from one end of the lifting plate shaft 19. The lifting plate connecting shaft 29 rotates through the surface, which will drive the lifting plate push rod 30 to rotate along the surface of the lifting plate connecting shaft 29. When the lifting plate push rod 30 is lifted, the other end of the lifting plate push rod 30 is driven to move up and down. The end face of the lifting plate connecting shaft 29 is fixedly connected with the internal thread slider 28. When the internal thread slider 28 is running, the lifting plate connecting shaft 29 is driven to move. The inner wall of the internal thread slider 28 is threadedly connected with the threaded rotating rod 27. The threaded rotating rod 27 is connected with the thread of the inner wall to drive the internal thread slider 28 to move along the threaded rotating rod 27. The end face of the threaded rotating rod 27 away from the end of the internal thread slider 28 is fixedly connected with the transmission rod 26. When the motor 5 is started, the transmission rod 26 is driven to rotate, and the transmission rod 26 drives the threaded rotating rod 27 to run. There are two lifting plate rotating shafts 19, which are symmetrically distributed on the surface of the lifting plate 20. The surface of the threaded rotating rod 27 penetrates the inner wall of the base plate 6 to the end face of the transmission rod 26, and is rotatably connected to the inner wall of the base plate 6. There are two lifting plate connecting shafts 29, which are symmetrically distributed on the surface of the internal threaded slider 28.

[0025] The auxiliary component 2 includes a transverse slide plate 34. When the transverse slide plate 34 is in operation, the inner wall at the other end of the transverse slide plate 34 contacts the surface of the outer lifting plate 20. When the outer lifting plate 20 is lifted and lowered, the surface of the outer lifting plate 20 is pushed up and operated by extrusion, so as to assist it in better operation. At the same time, it is protected to prevent it from being damaged. The end surface of the hydraulic lifting rod 33 away from the transverse slide plate 34 is fixedly connected with the inner stretching plate 35. When the inner lifting plate 21 runs to the required position, the inner stretching plate 35 is started to drive the arc plate 36 to run. The surface of the inner stretching plate 35 is fixedly connected with the arc plate 36. The arc plate 36 will run along the inner wall of the arc plate rotating rod 37. At the same time, the arc plate 36 will drive the arc plate pulling block 38 at the other end to run along the inner wall of the arc plate drawing groove 39. The surface of the arc plate 36 is rotatably connected with the arc plate rotating rod 37. There are two transverse groove plates 31, which are symmetrically distributed on the surface of the transverse slide plate 34. The bottom end of the transverse groove plate 31 is fixedly connected to the top of each group of lifting rods 9. There are two arc plates 36, which are symmetrically distributed on the surface of the inner stretching plate 35 of the two arc plates 36. The end face of the arc plate rotating rod 37 away from one end of the arc plate 36 is rotatably connected to the surface of the transverse groove plate 31, and the inner wall of the transverse slide plate 34 away from one end of the transverse groove plate 31 contacts the surface of the outer lifting plate 20.

[0026] The end face of the arc plate 36 away from the inner stretching plate 35 is fixedly connected with an arc plate pull block 38, and the surface of the arc plate pull block 38 is slidably connected with an arc plate pull groove 39. The end face of the arc plate pull block 38 away from the arc plate 36 is fixedly connected with a locking rack 40. The arc plate pull block 38 will drive the locking rack 40 to operate, and eventually the surface of the locking rack 40 will be fixed to the surface of the gear shaft 22, fixing its position to prevent it from falling and protecting it from being raised or lowered. The bottom end of the arc plate pull groove 39 is fixedly connected to the surface of the outer lifting plate 20.

[0027] The protective component 3 includes a connecting cross plate 54. When the connecting cross plate 54 is in operation, the protective lifting rod 55 will be driven to operate, and the protective lifting rod 55 will be squeezed and protected by the reaction force with the surface of the bottom plate 6. The end face of the connecting cross plate 54 is fixedly connected with the protective lifting rod 55. There are two gears 51, and the two gears 51 are symmetrically distributed on the surface of the wire collection rod 12. The surface of the connecting cross plate 54 is fixedly connected to the surfaces of the two fixed plates 53. There are two protective lifting rods 55, and the two protective lifting rods 55 are symmetrically distributed on the surface of the connecting cross plate 54. The end face of the protective lifting rod 55 away from one end of the connecting cross plate 54 is fixedly connected to the bottom end of the bottom plate 6.

[0028] The surface of the threaded rotating rod 27 close to one end of the motor 5 is fixedly connected with an output bevel gear 58. When the threaded rotating rod 27 runs, it will drive the output bevel gear 58 to rotate. The output bevel gear 58 drives the threaded bevel gear 59 to run through the surface meshing action. The surface of the output bevel gear 58 is meshed with the threaded bevel gear 59. The end face of the threaded bevel gear 59 away from the output bevel gear 58 is fixedly connected with a threaded lifting rod 56. The threaded lifting rod 59 will drive the threaded lifting rod 56 to perform threaded lifting and lowering operation. The threaded lifting rod 56 will first perform threaded rotation. When it rises to a certain height, it will perform lifting and extruding operation. When the threaded lifting rod 56 performs lifting and extruding operation, it will drive the pressing plate 57 to perform extruding operation. The fixing ability of the pressing plate 57 enables it to operate more stably. The device is balanced by the gravity of the motor 5. The end face of the threaded lifting rod 56 away from the balancing block 8 is fixedly connected with the pressing plate 57. The surface of the threaded lifting rod 56 passes through the inner wall of the bottom plate 6 and is rotatably connected to the inner wall of the bottom plate 6.

[0029] During use, after the control panel 7 controls the lifting rod 9 to move up and down to the required position, if the height is still not enough at this time, the motor 5 is started in the moving component 1, which will drive the transmission rod 26 to rotate and operate, and the transmission rod 26 will drive the threaded rotating rod 27 to operate. The threaded rotating rod 27 is connected through the threaded connection of the inner wall, and drives the internal threaded slider 28 to operate along the threaded rotating rod 27. When the internal threaded slider 28 is running, it will drive the lifting plate connecting shaft 29 to operate. The lifting plate connecting shaft 29 rotates through the surface, which will drive the lifting plate push rod 30 to rotate along the surface of the lifting plate connecting shaft 29. At the same time, it will drive the other end of the lifting plate push rod 30 to move up and down, and the other end of the lifting plate push rod 30 will rotate along the surface of the lifting plate rotating shaft 19, and drive the lifting plate rotating shaft 19 to move up and down. When the lifting plate rotating shaft 19 is lifted and down, it will drive the outer lifting plate 20 to move. The outer lifting plate 20 will drive the inner lifting plate 21 to move up and down. At the same time, the engine 4 is started, which will drive the output rod 11 to move. The output rod 11 will drive the wire collection rod 12 to move along the inner wall of the wire collection box 13. When the wire collection rod 12 is running, it will drive the stretching line 14 to stretch. When the stretching line 14 is running, it will first rotate along the surface of the steering rod 15 to increase the surface friction of the stretching line 14, which can better stretch it and prevent it from being damaged due to excessive force. After that, it will rotate along the surface of the pulling rod 17, and finally drive the connecting plate 23 to move. When the connecting plate 23 is running, it will drive the gear shaft 22 to move. The gear shaft 22 will drive the inner lifting plate 21 to move up and down. Finally, when the inner lifting plate 21 moves to the required position, the operating hook 10 will transport the required items. At this time, in the auxiliary component 2, when the motor 5 is running, the hydraulic lifting rod 33 will run. When the hydraulic lifting rod 33 is running, it will drive the cross slide 34 to run along the cross groove 32. When the cross slide 34 is running, the inner wall of the other end of the cross slide 34 contacts the surface of the outer lifting plate 20. When the outer lifting plate 20 is lifted and operated, the surface of the outer lifting plate 20 is pushed up by extrusion to assist it to run better. At the same time, it is protected to prevent it from being damaged. At the same time, when the inner lifting plate 21 runs to the required position, the inner stretching plate 35 is started to drive the arc plate 36 to run. The arc plate 36 will run along the inner wall of the arc plate rotating rod 37. At the same time, the arc plate 36 will drive the arc plate pulling block 38 at the other end to run along the inner wall of the arc plate pulling groove 39. The arc plate pulling block 38 will drive the positioning rack 40 to run, and finally fix the surface of the positioning rack 40 with the surface of the gear shaft 22, fix its position, prevent it from falling, and protect its lifting and lowering.At this time, in the protective component 3, when the threaded rotating rod 27 is running, it will drive the output bevel gear 58 to rotate, and the output bevel gear 58 drives the threaded bevel gear 59 to run through the surface meshing action, and the threaded bevel gear 59 will drive the threaded lifting rod 56 to perform threaded lifting and lowering operation. The threaded lifting rod 56 will first perform threaded rotation, and when it rises to a certain height, it will perform lifting and extrusion operation. When the threaded lifting rod 56 is in the lifting and extrusion operation, it will drive the pressing plate 57 to perform extrusion operation. Through the fixing ability of the pressing plate 57, it can be operated more stably, and the device is balanced by the gravity of the motor 5. At the same time, when the line collection rod 12 is running, it will drive the gear 51 to run, and the gear 51 drives the tooth plate 52 to run through the surface meshing action. When the tooth plate 52 is running, it will drive the fixed plate 53 to run, and the fixed plate 53 will drive the connecting horizontal plate 54 to run. When the connecting horizontal plate 54 runs, it will drive the protective lifting rod 55 to run, and the protective lifting rod 55 will be squeezed and protected by the reaction force with the surface of the bottom plate 6.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A double-beam cantilever crane, comprising a bottom plate (6), a control panel (7) being fixedly connected to the surface of the bottom plate (6), a balance block (8) being fixedly connected to the surface of the bottom plate (6) on a side close to the control panel (7), a motor (5) being fixedly connected to the top of the balance block (8), a lifting rod (9) being fixedly connected to the inner wall of the bottom plate (6), a hook (10) being provided on the side of the bottom plate (6) away from the balance block (8), four lifting rods (9) being provided, the four lifting rods (9) being divided into two groups, and each group having two lifting rods, the two groups of lifting rods (9) being symmetrically distributed on the surface of the bottom plate (6), It is characterized in that Also includes: A moving component (1), the moving component (1) comprising an output rod (11), the end surface of the output rod (11) being fixedly connected to a line collection rod (12), the surface of the line collection rod (12) being rotatably connected to a line collection box (13); An auxiliary component (2), the auxiliary component (2) comprising a transverse groove plate (31), the inner wall of the transverse groove plate (31) being provided with a transverse groove (32), and the surface of the transverse groove (32) being provided with a hydraulic lifting rod (33); A protective component (3), the protective component (3) comprising a gear (51), a surface of the gear (51) being meshingly connected with a toothed plate (52), and an end surface of the toothed plate (52) away from an end of the gear (51) being fixedly connected with a fixing plate (53).

2. A double-beam cantilever crane according to claim 1, Features: The moving component (1) includes a stretching wire (14), the surface of the stretching wire (14) is rotatably connected to a steering rod (15), the end face of the steering rod (15) is rotatably connected to a steering rod column (16), the surface of the stretching wire (14) away from the steering rod (15) is rotatably connected to a wire pulling rod (17), the surface of the wire pulling rod (17) is rotatably connected to a wire pulling turntable (18), the surface of the wire collection rod (12) passes through the inner wall of the wire collection box (13), and the surface of the wire collection rod (12) is fixedly connected to the end face of the stretching wire (14) away from the wire pulling rod (17).

3. A double-beam cantilever crane according to claim 2, Features: The end surface of the stretching line (14) close to the steering rod (15) is fixedly connected to a connecting plate (23), the end surface of the connecting plate (23) is fixedly connected to a gear shaft (22), the end surface of the gear shaft (22) away from the connecting plate (23) is fixedly connected to an inner lifting plate (21), the surface of the inner lifting plate (21) is slidably connected to an outer lifting plate (20), the inner wall of the outer lifting plate (20) close to the steering rod (15) is rotatably connected to a lifting plate shaft (24), and the surface of the lifting plate shaft (24) is rotatably connected to a lifting plate shaft seat (25); The number of the steering rod columns (16) is set to two, and the two steering rod columns (16) are symmetrically distributed on the surface of the outer lifting plate (20); the end surface of the steering rod column (16) away from the steering rod (15) is fixedly connected to the surface of the outer lifting plate (20); the end surface of the wire pull turntable (18) away from the wire pull turnbar (17) is fixedly connected to the surface of the outer lifting plate (20); and the end surface of the inner lifting plate (21) away from the gear shaft (22) is fixedly connected to the end surface of the hook (10).

4. A double-beam cantilever crane according to claim 3, Features: The surface of the outer lifting plate (20) is fixedly connected to a lifting plate rotating shaft (19), a lifting plate push rod (30) is rotatably connected to the surface of the lifting plate rotating shaft (19), a lifting plate connecting shaft (29) is rotatably connected to the inner wall of the lifting plate push rod (30) at one end away from the lifting plate rotating shaft (19), an internal threaded slider (28) is fixedly connected to the end surface of the lifting plate connecting shaft (29), a threaded rotating rod (27) is threadedly connected to the inner wall of the internal threaded slider (28), and a transmission rod (26) is fixedly connected to the end surface of the threaded rotating rod (27) at one end away from the internal threaded slider (28); The number of the lifting plate rotating shafts (19) is two, and the two lifting plate rotating shafts (19) are symmetrically distributed on the surface of the lifting plate (20). The surface of the threaded rotating rod (27) penetrates the inner wall of the bottom plate (6) to the end surface of the transmission rod (26), and is rotatably connected to the inner wall of the bottom plate (6). The number of the lifting plate connecting shafts (29) is two, and the two lifting plate connecting shafts (29) are symmetrically distributed on the surface of the internal threaded slider (28).

5. A double-beam cantilever crane according to claim 4, Features: The auxiliary component (2) comprises a transverse slide plate (34), an end surface of the hydraulic lifting rod (33) away from the transverse slide plate (34) is fixedly connected to an inner stretching plate (35), a surface of the inner stretching plate (35) is fixedly connected to an arc plate (36), and a surface of the arc plate (36) is rotatably connected to an arc plate rotating rod (37); The number of the transverse groove plates (31) is set to two, and the two transverse groove plates (31) are symmetrically distributed on the surface of the transverse slide plate (34). The bottom end of the transverse groove plate (31) is fixedly connected to the top of each group of lifting rods (9). The number of the arc plates (36) is set to two, and the two arc plates (36) are symmetrically distributed on the surface of the inner stretching plate (35). The end surface of the arc plate rotating rod (37) away from the arc plate (36) is rotatably connected to the surface of the transverse groove plate (31), and the inner wall of the transverse slide plate (34) away from the transverse groove plate (31) is in contact with the surface of the outer lifting plate (20).

6. A double-beam cantilever crane according to claim 5, Features: The end surface of the arc plate (36) away from the inner stretching plate (35) is fixedly connected to an arc plate pull block (38), the surface of the arc plate pull block (38) is slidably connected to an arc plate pull groove (39), the end surface of the arc plate pull block (38) away from the arc plate (36) is fixedly connected to a locking rack (40), and the bottom end of the arc plate pull groove (39) is fixedly connected to the surface of the outer lifting plate (20).

7. A double-beam cantilever crane according to claim 6, Features: The protective component (3) comprises a connecting transverse plate (54), the end surface of the connecting transverse plate (54) being fixedly connected to a protective lifting rod (55), the number of the gears (51) being provided at two, the two gears (51) being symmetrically distributed on the surface of the wire collection rod (12), the surface of the connecting transverse plate (54) being fixedly connected to the surfaces of the two fixed plates (53), the number of the protective lifting rods (55) being provided at two, the two protective lifting rods (55) being symmetrically distributed on the surface of the connecting transverse plate (54), and the end surface of the protective lifting rod (55) away from one end of the connecting transverse plate (54) being fixedly connected to the bottom end of the bottom plate (6).

8. A double-beam cantilever crane according to claim 7, Features: The surface of the threaded rotating rod (27) close to the motor (5) is fixedly connected to an output bevel gear (58), the surface of the output bevel gear (58) is meshingly connected to a threaded bevel gear (59), the end surface of the threaded bevel gear (59) away from the output bevel gear (58) is fixedly connected to a threaded lifting rod (56), the end surface of the threaded lifting rod (56) away from the balance block (8) is fixedly connected to a pressure plate (57), and the surface of the threaded lifting rod (56) passes through the inner wall of the bottom plate (6) and is rotatably connected to the inner wall of the bottom plate (6).

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