Building engineering material hoister

Abstract

The invention discloses a constructional engineering material hoister, and belongs to the technical field of tower crane parts, the constructional engineering material hoister comprises a fixed plate I and a fixed plate II, two groups of pulleys are rotatably arranged between the fixed plate I and the fixed plate II, the two groups of pulleys are symmetrically arranged, and lifting hooks are mounted at the lower ends of the fixed plate I and the fixed plate II; an upper traction wheel and a lower traction wheel are rotationally connected between the first fixing plate and the second fixing plate and located below the pulley. When one rope is broken, the corresponding detection assembly can rapidly detect pressure change and immediately trigger the rope locking assembly on the other side to execute rope locking operation, so that a lifting hook and materials are effectively prevented from continuing to fall, the risk of safety accidents is greatly reduced, and after the rope locking assemblies lock the ropes, the rope locking assembly can lock the rope in the rope locking process. And the moving wheels can move to the middle position along the preset guide grooves, so that the inclination phenomenon caused by uneven stress of the lifting hook is effectively avoided, and a lifted heavy object is prevented from falling off due to inclination.

Description

Technical Field

[0001] The present invention relates to the technical field of tower crane components, and more specifically, to a material hoist for construction engineering. Background Art

[0002] On construction sites, one of the main tasks of tower cranes is to lift building materials (such as steel bars, cement, bricks, prefabricated components, etc.) and equipment (such as formwork, scaffolding, etc.) vertically from the ground to construction floors at different heights. In addition to vertical lifting, on the construction site, the tower crane can also realize the horizontal transportation of materials and equipment between different construction areas by rotating the boom. The construction site is usually large in area, with different construction processes distributed in various areas, and the material stacking area is often a certain distance away from the construction site. The boom of the tower crane can rotate flexibly to quickly lift materials from the material stacking area to the vicinity of the building under construction, providing convenience for workers and facilitating their timely access to the required materials, thereby ensuring the continuity and efficiency of construction.

[0003] When lifting materials, tower cranes usually hook the materials through the hook, and then operate the rope to control the lifting and lowering of the hook. In actual operation, the lifted materials are generally very heavy, which makes the entire lifting system bear huge tension. When the boom is rotating and moving, if the rope breaks, the hook and the material will fall rapidly. This emergency is extremely dangerous. Once it hits the people working below, it may cause casualties. Even if it does not hit the staff, the material hitting the ground will cause damage to the material, increase construction costs, and may also affect the construction progress.

[0004] In order to deal with emergencies such as rope breakage and ensure construction safety, people try to install a rope locking mechanism on the hook. For example, a tower crane hook anti-fall device and method disclosed, application number 202411310515.1, is the embodiment of this idea. When the rope on one side of the hook breaks, the rope locking mechanism can quickly lock the rope to prevent the hook and the material from continuing to fall. However, in practical applications, this rope locking method also has certain problems. When the rope locking mechanism quickly locks the rope, the hanging point of the hook will change, the originally balanced stress state will be broken, and the hook is prone to tilt. Once the hook tilts, the material it hooks will easily fall off the hook. The falling of the material may not only cause damage to the material, but also cause secondary safety accidents, such as materials rolling down and injuring people. Therefore, how to further improve the safety of the tower crane while ensuring efficient lifting and prevent safety accidents caused by unexpected situations such as rope breakage is an important issue that needs to be solved in the current construction industry. Summary of the invention

[0005] Aiming at the problems existing in the above-mentioned technologies, the purpose of the present invention is to provide a material hoist for construction projects, which can achieve that when a rope breaks, the corresponding detection component can quickly detect the pressure change and immediately trigger the rope locking component on the other side to perform the rope locking operation, thereby effectively preventing the hook and the materials from continuing to fall, greatly reducing the risk of safety accidents. After the rope locking component locks the rope, its moving wheel will move along the preset guiding groove to the middle position, so that the first fixing plate and the second fixing plate can be balanced in force, effectively avoiding the tilting phenomenon of the hook caused by uneven force, and preventing the lifted heavy object from falling due to tilting.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A material hoist for construction projects includes a first fixing plate and a second fixing plate. Two sets of pulleys are rotatably arranged between the first fixing plate and the second fixing plate. The two sets of pulleys are symmetrically arranged. A hook is installed at the lower ends of the first fixing plate and the second fixing plate; An upper traction wheel and a lower traction wheel are rotatably connected between the first fixing plate and the second fixing plate below the pulleys. The lower traction wheel is located below the upper traction wheel. A gap for the rope to move is left between the upper traction wheel and the lower traction wheel. Guiding grooves are formed on the adjacent surfaces of the first fixing plate and the second fixing plate, and the guiding grooves are located above the pulleys. Rope locking components are arranged at both the left and right ends of the guiding grooves. The rope locking components are slidably arranged with the guiding grooves. The rope locking components include clamping plates. The clamping plates are arranged in two sets and are respectively arranged on the left and right sides of each rope. The two sets of clamping plates are arranged obliquely downward; A detection component is also installed between the first fixing plate and the second fixing plate. The detection component is arranged in two sets and is symmetrically arranged left and right. The detection component is used to detect the pressure of each rope. If the detection component on the left end detects a decrease in pressure, the rope locking component on the right side is opened; If the detection component on the right end detects a decrease in pressure, the rope locking component on the left side is opened.

[0008] Further, the rope locking assembly includes a control board and a control box. The clamping plate is rotatably connected to the adjacent surfaces of the control board and the control box through a rotating shaft, and the distance between the two groups of rotating shafts is less than the total length of the two groups of clamping plates when they are in a horizontal state. Moving wheels are installed on the opposite surfaces of the control board and the control box, and the moving wheels are arranged in corresponding guiding grooves. The middle of the guiding groove is higher than the left and right ends. The rotating shaft on the moving wheel extends into the interior of the control box and is fixedly connected to a sector gear plate. The two sector gear plates are meshed and connected. A limiting groove is formed in one of the sector gear plates, and a first elastic member is connected below this group of sector gear plates. One end of the first elastic member away from the sector gear plate is connected to the side wall of the control box. The initial state of the first elastic member is a compressed state. A limiting block is inserted into the limiting groove, and one end of the limiting block movably penetrates through the control box and extends to the outside. One end of the limiting block located outside the control box is fixedly connected to a traction rope. Two wire columns are rotatably connected between the first fixing plate and the second fixing plate.

[0009] Further, the detection assembly includes a fixing frame. The fixing frame is fixed between the first fixing plate and the second fixing plate. The inner wall of the upper end of the fixing frame is fixedly connected to a second elastic member. The initial state of the second elastic member is a compressed state. The lower end of the second elastic member is fixedly connected to a telescopic column. One end of the telescopic column away from the second elastic member is rotatably connected to a roller. The roller abuts against the rope. The traction rope is wound around the corresponding wire column. The traction rope on the rightmost group of rope locking assemblies is fixedly connected to the telescopic column on the leftmost group of detection assemblies; the traction rope on the leftmost group of rope locking assemblies is fixedly connected to the telescopic column on the rightmost group of detection assemblies. The traction rope movably passes through the upper end wall of the fixing frame.

[0010] Further, the detection assembly includes a hook-shaped rod. The hook part of the hook-shaped rod hooks on the wire column, and the hook part of the hook-shaped rod is fixedly connected to the traction rope. An electromagnet is fixedly connected between the first fixing plate and the second fixing plate. The electromagnet is arranged at one end of the hook handle of the hook-shaped rod. The hook-shaped rod is made of a permanent magnetic material.

[0011] Further, bearing seat grooves are formed on the adjacent surfaces of the first fixing plate and the second fixing plate. A pressure sensor is embedded in the inner side wall of the bearing seat groove on the second fixing plate. The pressure sensor is installed at one end where the two bearing seat grooves are close to each other. The pulley is rotatably arranged on the corresponding first fixing plate and second fixing plate through a rotating shaft. A bearing is sleeved on the rotating shaft, and the bearing is installed in the bearing seat groove.

[0012] Further, the limiting block obliquely penetrates downward through the side wall of the control box. A third elastic member is fixedly connected to the outer side wall of the control box near the position where the limiting block penetrates. One end of the third elastic member away from the control box is fixedly connected to the limiting block.

[0013] Furthermore, a limiting plate is fixedly connected to the outer circle of the wire column. The limiting plate is annular, and the limiting plates on the two groups of wire columns are arranged staggeredly. The arrangement of the limiting plate is used to stagger two traction ropes.

[0014] Furthermore, the upper traction wheel is rotatably connected to the corresponding first fixing plate and second fixing plate through a rotating shaft. A rotating wheel is fixedly connected to the outer circle of the rotating shaft. A plurality of groups of grooves are formed on the outer circle of the rotating wheel. A telescopic block is slidably arranged inside the groove. A fourth elastic member is fixedly connected between the telescopic block and the rotating wheel. An annular plate is sleeved on the outer surface of the rotating wheel. The inner ring wall of the annular plate is designed to be rough. The annular plate is fixedly connected to the corresponding first fixing plate and second fixing plate.

[0015] Furthermore, two groups of rotating wheels are provided, and the two groups of rotating wheels are respectively arranged on the front and rear sides of the upper traction wheel.

[0016] Furthermore, photovoltaic panels are installed on the opposite surfaces of the first fixing plate and the second fixing plate. A battery is also installed on the first fixing plate and the second fixing plate. The photovoltaic panel is used to charge the battery through an inverter. The battery is used to supply power to the electromagnet and the pressure sensor.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) When a rope breaks in this solution, the corresponding detection component can quickly detect the pressure change and immediately trigger the rope locking component on the other side to perform the rope locking operation, thus effectively preventing the hook and the material from continuing to fall, greatly reducing the risk of safety accidents. After the rope locking component locks the rope, its moving wheel will move along the preset guiding groove to the middle position, so that the first fixing plate and the second fixing plate can be balanced in force, effectively avoiding the tilting phenomenon of the hook caused by uneven force, and preventing the lifted heavy object from falling due to tilting. The system also has a dual rope locking guarantee mechanism, that is, after a rope breaks and triggers the rope locking component on one side, with the change of the force on the other side rope, the rope locking component on the other side will be triggered again, forming a dual rope locking effect, thereby further enhancing the safety of the system.

[0018] (2) This solution combines electronic detection and mechanical detection together to form a dual guarantee mechanism. When the rope breaks, whether it is mechanical detection or electronic detection, as long as one of the detection methods can work properly, the rope locking component can be triggered, thus greatly improving the safety and reliability of the system. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the external view of the overall structure of the present invention; Figure 2 It is the structural schematic diagram of the hook of the present invention; Figure 3 It is the structural schematic diagram of the detection component and the rope locking component in the first embodiment of the present invention; Figure 4 It is the disassembled schematic diagram of the detection component in the first embodiment of the present invention; Figure 5 It is the structural schematic diagram inside the control box of the present invention; Figure 6 For the present invention Figure 5 The enlarged view of part A in; Figure 7 It is the structural schematic diagram of the clamping plate and the sector gear plate of the present invention; Figure 8 It is the installation schematic diagram of the detection component in the third embodiment of the present invention; Figure 9 It is the structural schematic diagram of the installation of the hook-shaped rod and the wire column of the present invention; Figure 10 It is the structural schematic diagram of the bearing seat groove of the present invention; Figure 11 It is the structural schematic diagram of the rotating wheel of the present invention; Figure 12 It is the structural schematic diagram of the upper traction wheel of the present invention.

[0021] Explanation of the reference numerals in the figure: 1. First fixing plate; 2. Second fixing plate; 3. Hook; 4. Pulley; 5. Upper traction wheel; 6. Lower traction wheel; 7. Rope; 8. Telescopic column; 9. Roller; 10. Fixed frame; 11. Second elastic member; 12. Traction rope; 13. Control board; 14. Control box; 15. Moving wheel; 16. Sector gear plate; 17. First elastic member; 18. Limit groove; 19. Third elastic member; 20. Limit block; 21. Guide groove; 22. Electromagnet; 23. Hook-shaped rod; 24. Wire column; 25. Limit plate; 26. Pressure sensor; 27. Ring plate; 28. Rotating wheel; 29. Groove; 30. Fourth elastic member; 31. Telescopic block; 32. Clamping plate; 33. Bearing seat groove; 34. Photovoltaic panel. Detailed implementation manners

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0023] Please refer to Figures 1 to 12 , a material hoist for construction engineering, including a first fixing plate 1 and a second fixing plate 2. The first fixing plate 1 and the second fixing plate 2 are fixed by bolts and nuts. Two sets of pulleys 4 are rotatably arranged between the first fixing plate 1 and the second fixing plate 2. The two sets of pulleys 4 are symmetrically arranged. A hook 3 is installed at the lower ends of the first fixing plate 1 and the second fixing plate 2; An upper traction wheel 5 and a lower traction wheel 6 are rotatably connected between the first fixing plate 1 and the second fixing plate 2 below the pulley 4. The lower traction wheel 6 is located below the upper traction wheel 5. A gap for the rope 7 to move is left between the upper traction wheel 5 and the lower traction wheel 6. Guide grooves 21 are opened on the adjacent surfaces of the first fixing plate 1 and the second fixing plate 2, and the guide grooves 21 are located above the pulley 4. Locking rope assemblies are arranged at both the left and right ends of the guide grooves 21. The locking rope assemblies are slidably arranged with the guide grooves 21. The locking rope assemblies include clamping plates 32. The clamping plates 32 are arranged in two sets and are respectively arranged on the left and right sides of each strand of the rope 7. The two sets of clamping plates 32 are arranged obliquely downward; A detection component is also installed between the first fixing plate 1 and the second fixing plate 2. The detection component is arranged in two sets and is symmetrically arranged left and right. The detection component is used to detect the pressure of each strand of the rope 7. If the detection component on the left end detects a decrease in pressure, the locking rope assembly on the right side is opened; if the detection component on the right end detects a decrease in pressure, the locking rope assembly on the left side is opened; The rope locking assembly includes a control board 13 and a control box 14. The clamping plate 32 is rotatably connected to the adjacent surfaces of the control board 13 and the control box 14 through a rotating shaft. The distance between the two groups of rotating shafts is less than the total length of the two groups of clamping plates 32 when they are in a horizontal state. Moving wheels 15 are installed on the opposite surfaces of the control board 13 and the control box 14. The moving wheels 15 are arranged in the corresponding guide grooves 21. The middle of the guide groove 21 is higher than the left and right ends. The rotating shaft on the moving wheel 15 extends into the interior of the control box 14 and is fixedly connected to a sector gear plate 16. The two sector gear plates 16 are meshed and connected. A limiting groove 18 is formed in one of the sector gear plates 16. A first elastic member 17 is connected below this group of sector gear plates 16. One end of the first elastic member 17 away from the sector gear plate 16 is connected to the side wall of the control box 14. The initial state of the first elastic member 17 is a compressed state. A limiting block 20 is inserted into the interior of the limiting groove 18. One end of the limiting block 20 movably penetrates through the control box 14 and extends to the outside. The limiting block 20 passes through the side wall of the control box 14 in an inclined downward manner. A third elastic member 19 is fixedly connected to the outer side wall of the control box 14 near the position where the limiting block 20 penetrates. One end of the third elastic member 19 away from the control box 14 is fixedly connected to the limiting block 20; One end of the limiting block 20 located outside the control box 14 is fixedly connected to a traction rope 12. Two wire columns 24 are rotatably connected between the first fixing plate 1 and the second fixing plate 2; The detection assembly includes a fixing frame 10. The fixing frame 10 is fixed between the first fixing plate 1 and the second fixing plate 2. The inner wall of the upper end of the fixing frame 10 is fixedly connected to a second elastic member 11. The initial state of the second elastic member 11 is a compressed state. The lower end of the second elastic member 11 is fixedly connected to a telescopic column 8. One end of the telescopic column 8 away from the second elastic member 11 is rotatably connected to a roller 9. The roller 9 abuts against the rope 7; The traction rope 12 is wound around the corresponding wire column 24. The traction rope 12 on the rightmost group of rope locking assemblies is fixedly connected to the telescopic column 8 on the leftmost group of detection assemblies; The traction rope 12 on the leftmost group of rope locking assemblies is fixedly connected to the telescopic column 8 on the rightmost group of detection assemblies. The traction rope 12 movably penetrates through the upper end wall of the fixing frame 10.

[0024] By adopting the above technical solution, the rope 7 passes through between the upper traction wheel 5 and the lower traction wheel 6, and at the same time is wound around the pulley 4. Each strand of the rope 7 passes through between the corresponding two sets of clamping plates 32. The rope 7 forms a triangle through the upper traction wheel 5 and the pulley 4. The ropes 7 on both sides of the triangle are initially pressing against the pressing rollers 9, resulting in the telescopic column 8 pressing against the second elastic member 11. In this way, the initial state of the second elastic member 11 is in a compressed state. This is because the self-weight of the fixing plate one 1 and the fixing plate two 2 and the heavy object being lifted cause the rope 7 to be stressed downward, causing the ropes 7 on both sides of the triangle to always be in a taut state. The elastic force of the second elastic member 11 cannot push the ropes 7 on both sides of the triangle through the telescopic column 8. When one strand of the rope 7 on the left side breaks, the strand of the rope 7 on the left side is no longer stressed, and at this time, the ropes 7 of the right group are stressed. Because the rope 7 is subjected to an upward pulling force, and is also subjected to the self-weight of the upper traction wheel 5 and the lower traction wheel 6 and the heavy object being lifted, causing the rope 7 to be stressed downward. At this time, the rope 7 on the left side moves to the right between the upper traction wheel 5 and the lower traction wheel 6. Although the rope 7 on the left side has been moving to the right, the upper and lower ends of the rope 7 on the right side are still stressed. In this way, the rope 7 on the right side of the triangle still keeps pressing against the telescopic column 8 on the right detection assembly, ensuring that the second elastic member 11 on the right detection assembly is in a compressed state. The rope 7 on the left side is no longer subjected to the upward lifting force. The compressed second elastic member 11 in the left detection assembly pushes the telescopic column 8 to extend out of the fixing frame 10. The movement of the telescopic column 8 will pull the corresponding traction rope 12, and the traction rope 12 will pull the rope locking assembly on the right side, that is, the traction rope 12 pulls the limiting block 20, causing the limiting block 20 to disengage from the limiting groove 18. The previously compressed first elastic member 17 pushes the sector gear plate 16 to rotate upward. This group of sector gear plates 16 will also drive another group of sector gear plates 16 that are meshed and connected. The two groups of sector gear plates 16 rotate upward. When the two groups of sector gear plates 16 rotate, they will drive the clamping plates 32 to rotate upward through the rotating shaft. The two groups of clamping plates 32 will clamp the rope 7. When the rope 7 continues to move upward, it will pull the clamping plates 32 through friction. The clamping plates 32 will rotate upward at the rotating shaft. Because the clamping plates 32 were previously inclined downward, and the distance between the rotating shafts of the two groups of clamping plates 32 is less than the total length of the two groups of clamping plates 32 when they are in a horizontal state, the greater the downward sliding force of the device, the tighter the two groups of clamping plates 32 clamp the rope 7, causing the two groups of clamping plates 32 to lock the rope 7. The upper and lower ends of the rope 7 on the right side of the triangle are stressed, resulting in the rope 7 on the right side being stressed obliquely. At this time, in order to ensure force balance, the moving wheel 15 on the right rope locking assembly will move along the track of the guide groove 21 and move to the middle of the guide groove 21. In this way, the fixing plate one 1 and the fixing plate two 2 are balanced in force, and the fixing plate one 1 and the fixing plate two 2 will not tilt, thus avoiding the problem that the hook 3 tilts easily and causes the lifted heavy object to fall. It should be noted that the elastic force of the second elastic member 11 is greater than the elastic force of the third elastic member 19.

[0025] After the rope-locking component on the right locks the rope, when the corresponding moving wheel 15 moves to the middle of the guide groove 21, the rope 7 on the right side of the triangle is no longer stressed. At this time, the second elastic member 11 in the right detection component pushes the telescopic column 8, and drives the rope-locking component on the left to open through the traction rope 12 and perform the rope-locking operation. In this way, double rope-locking is achieved, avoiding the problem of the rope 7 continuing to slide down. It should be noted in the specification that when the break point is close to the rope-locking component, there is too much reaction time left for the rope-locking component, and the corresponding rope-locking component cannot ensure that the rope 7 can be stably locked. At this time, only the rope-locking component in the group far from the break point can lock the rope 7. In this case, it is difficult to achieve double rope-locking, and only single rope-locking can be achieved.

[0026] When the rope 7 on the right side breaks, its working principle is similar to the above. Specifically, the detection component on the right is first triggered, and the rope-locking component on the left is triggered through the detection component on the right. After the rope is locked, the moving wheel 15 on the left rope-locking component moves to the middle of the guide groove 21, and the rope 7 on the left side of the triangle is no longer stressed. Then the detection component on the left is triggered, and the rope-locking component on the right is triggered through the detection component on the left. Embodiment 2

[0027] In some embodiments of the present invention, the detection component includes a hook-shaped rod 23. The hook portion of the hook-shaped rod 23 is hooked on the wire column 24, and the hook portion of the hook-shaped rod 23 is fixedly connected to the traction rope 12. An electromagnet 22 is fixedly connected between the first fixing plate 1 and the second fixing plate 2. The electromagnet 22 is arranged at one end of the hook handle of the hook-shaped rod 23. The hook-shaped rod 23 is made of a permanent magnetic material; Bearing seat grooves 33 are formed on the adjacent surfaces of the first fixing plate 1 and the second fixing plate 2. A pressure sensor 26 is embedded on the inner side wall of the bearing seat groove 33 on the second fixing plate 2. The pressure sensor 26 is installed at one end where the two bearing seat grooves 33 are close to each other. The pulley 4 is rotatably arranged on the corresponding first fixing plate 1 and second fixing plate 2 through a rotating shaft. A bearing is sleeved on the rotating shaft, and the bearing is installed in the bearing seat groove 33.

[0028] By adopting the above technical solution, during daily work, the rope 7 at the pulley 4 presses against the pulley 4, causing a force for the two groups of pulleys 4 to approach each other. Then, the bearing in the bearing seat groove 33 always presses against the pressure sensor 26. When the rope 7 on the right side breaks, the pulley 4 on the right side no longer receives the pressing force from the rope 7, and the value detected by the pressure sensor 26 becomes smaller. At this time, the pulley 4 on the left side still receives the pressing force from the rope 7, and the pressure value remains unchanged. That is to say, when the rope 7 on the right side is detected to break through the pressure sensor 26, the electromagnet 22 on the left side is energized, and the electromagnet 22 generates magnetism. Since the hook handle of the hook-shaped rod 23 is made of a permanent magnetic material, when the electromagnet 22 is energized, the adjacent surfaces of the electromagnet 22 and the hook-shaped rod 23 are the same magnetic poles. The hook handle of the hook-shaped rod 23 is pushed by the magnetic repulsion force, and the hook-shaped rod 23 moves to pull the corresponding traction rope 12. At this time, the traction rope 12 pulls the limit block 20 in the left rope locking assembly, thereby triggering the rope locking assembly to lock the rope. Then, the moving wheel 15 on the left rope locking assembly moves to the middle of the guide groove 21. At this time, the pulley 4 on the left side also no longer receives the pressing force, and the value detected by the pressure sensor 26 on the left side will also become smaller. At this time, the electromagnet 22 on the right side is controlled to be energized to push the hook-shaped rod 23 and pull the traction rope 12 to trigger the rope locking assembly on the right side. Compared with Embodiment 1, Embodiment 2 uses electronic devices for detection, which can improve the detection sensitivity and thus improve the reverse efficiency. It should be noted that the pressure sensor 26 triggers the electromagnet 22 to be energized only when the detected pressure value is lower than the preset threshold, rather than when the value detected by the pressure sensor 26 changes and becomes smaller, because during actual use, when unloading goods, the value detected by the pressure sensor 26 also becomes smaller.

[0029] When the rope 7 on the left side breaks, the specific working principle is similar to the above, but the operation is opposite. Embodiment 3

[0030] Embodiment 3 combines Embodiment 2 and Embodiment 1, combines electronic detection and mechanical detection together, and forms a dual protection mechanism. When the rope 7 breaks, whether it is mechanical detection or electronic detection, as long as one of the detection methods can work properly, the rope locking assembly can be triggered, thus greatly improving the safety and reliability of the system. For example, when the rope 7 on the right side breaks, if the telescopic column 8 on the right side fails to pop out, and at this time the pressure sensor 26 on the right side detects that the value becomes smaller, then the corresponding rope locking assembly can also be triggered. Even if there are problems such as damage to electronic components or different circuits, the mechanical detection component can still be used. This combined use method not only ensures the accuracy of detection but also improves the fault tolerance of the system.

[0031] In some embodiments of the present invention, a limiting plate 25 is fixedly connected to the outer circle of the wire column 24. The limiting plate 25 is annular in shape. The limiting plates 25 on the two groups of wire columns 24 are arranged staggeredly. The arrangement of the limiting plate 25 is used to stagger the two traction ropes 12, avoiding the problem that the two traction ropes 12 rub against each other when being pulled, affecting the pulling effect.

[0032] In some embodiments of the present invention, the upper traction wheel 5 is rotatably connected to the corresponding first fixing plate 1 and second fixing plate 2 through a rotating shaft. A rotating wheel 28 is fixedly connected to the outer circle of the rotating shaft. A plurality of grooves 29 are formed on the outer circle of the rotating wheel 28. A telescopic block 31 is slidably arranged inside the groove 29. A fourth elastic member 30 is fixedly connected between the telescopic block 31 and the rotating wheel 28. An annular plate 27 is sleeved on the outer surface of the rotating wheel 28. The inner ring wall of the annular plate 27 is designed to be rough. The annular plate 27 is fixedly connected to the corresponding first fixing plate 1 and second fixing plate 2. The rotating wheels 28 are provided in two groups, and the two groups of rotating wheels 28 are respectively arranged on the front and rear sides of the upper traction wheel 5.

[0033] By adopting the above technical solution, when the rope 7 breaks, the rope 7 will move from the upper traction wheel 5, and at the same time drive the upper traction wheel 5 to rotate. When the upper traction wheel 5 rotates, it will synchronously drive the rotating wheel 28 to rotate through the rotating shaft. If the upper traction wheel 5 rotates too fast, the rotating wheel 28 will also rotate too fast, which will generate a centrifugal force higher than that during normal operation. Under the influence of the centrifugal force, the telescopic block 31 will extend out of the groove 29, and at the same time pull the fourth elastic member 30. The telescopic block 31 contacts the inner wall of the annular plate 27. Because the inner wall of the annular plate 27 is rough, the rotation of the upper traction wheel 5 can be effectively hindered by increasing the friction force, thereby effectively preventing the rope 7 from sliding down rapidly due to gravity after breaking. This safety protection mechanism greatly reduces the risk of the heavy object getting out of control and falling due to the breakage of the rope 7, and improves the safety of the overall system.

[0034] In some embodiments of the present invention, photovoltaic panels 34 are installed on the opposite surfaces of the first fixing plate 1 and the second fixing plate 2. A battery is also installed on the first fixing plate 1 and the second fixing plate 2. The photovoltaic panel 34 is used to charge the battery through an inverter. The battery is used to supply power to the electromagnet 22 and the pressure sensor 26.

[0035] It should be noted that the first elastic member 17, the second elastic member 11, the third elastic member 19 and the fourth elastic member 30 of the present invention are made of a spring, an elastic rubber block, an elastic telescopic column or a spring sheet, etc., and any one of them can be selected.

[0036] The above are only the preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A construction material hoist, comprising a first fixing plate (1) and a second fixing plate (2). Between the first fixing plate (1) and the second fixing plate (2), two groups of pulleys (4) are rotatably arranged. The two groups of pulleys (4) are symmetrically arranged. At the lower ends of the first fixing plate (1) and the second fixing plate (2), a hook (3) is installed. It is characterized in that: Between the first fixing plate (1) and the second fixing plate (2), above the pulleys (4), an upper traction wheel (5) and a lower traction wheel (6) are rotatably connected. The lower traction wheel (6) is located below the upper traction wheel (5). A gap for the rope (7) to move is left between the upper traction wheel (5) and the lower traction wheel (6). On the adjacent surfaces of the first fixing plate (1) and the second fixing plate (2), guide grooves (21) are provided, and the guide grooves (21) are located above the pulleys (4). At both the left and right ends of the guide grooves (21), rope locking components are provided. The rope locking components are slidably arranged in the guide grooves (21). The rope locking components include clamping plates (32). The clamping plates (32) are provided in two groups and are respectively arranged on the left and right sides of each strand of the rope (7). The two groups of clamping plates (32) are arranged obliquely downward. Between the first fixing plate (1) and the second fixing plate (2), a detection component is further installed. The detection component is provided in two groups and is symmetrically arranged left and right. The detection component is used to detect the pressure of each strand of the rope (7). If the left detection component detects a decrease in pressure, the right rope locking component is opened. If the right detection component detects a decrease in pressure, the left rope locking component is opened.

2. The material hoist for construction engineering according to claim 1, characterized in that: The rope locking component includes a control plate (13) and a control box (14). The clamping plate (32) is rotatably connected to the adjacent surfaces of the control plate (13) and the control box (14) through a rotating shaft. The distance between the two rotating shafts is less than the total length of the two clamping plates (32) when they are in a horizontal state. On the opposite surfaces of the control plate (13) and the control box (14), moving wheels (15) are installed. The moving wheels (15) are arranged in the corresponding guide grooves (21). The middle of the guide grooves (21) is higher than the left and right ends. The rotating shaft on the moving wheel (15) extends into the control box (14) and is fixedly connected to a sector gear plate (16). The two sector gear plates (16) are meshed with each other. A limiting groove (18) is provided on one of the sector gear plates (16), and a first elastic member (17) is connected below this sector gear plate (16). One end of the first elastic member (17) away from the sector gear plate (16) is connected to the side wall of the control box (14). The initial state of the first elastic member (17) is a compressed state. A limiting block (20) is inserted into the limiting groove (18). One end of the limiting block (20) movably penetrates the control box (14) and extends to the outside. The end of the limiting block (20) located outside the control box (14) is fixedly connected to a traction rope (12). Between the first fixing plate (1) and the second fixing plate (2), two wire columns (24) are rotatably connected.

3. The material hoist for construction engineering according to claim 2, characterized in that: The detection component includes a fixing frame (10), the fixing frame (10) is fixed between the first fixing plate (1) and the second fixing plate (2), the inner wall of the upper end of the fixing frame (10) is fixedly connected with a second elastic member (11), the initial state of the second elastic member (11) is a compressed state, the lower end of the second elastic member (11) is fixedly connected with a telescopic column (8), one end of the telescopic column (8) away from the second elastic member (11) is rotatably connected with a roller (9), and the roller (9) abuts against the rope (7); The towing rope (12) is wound around the corresponding wire column (24), and the towing rope (12) on the right - hand side set of the rope - locking components is fixedly connected with the telescopic column (8) on the left - hand side set of the detection components; the towing rope (12) on the left - hand side set of the rope - locking components is fixedly connected with the telescopic column (8) on the right - hand side set of the detection components, and the towing rope (12) movably passes through the upper end wall of the fixing frame (10).

4. A construction material hoist according to claim 2 or 3, characterized in that: The detection component includes a hook - shaped rod (23), the hook part of the hook - shaped rod (23) is hooked on the wire column (24), and the hook part of the hook - shaped rod (23) is fixedly connected with the towing rope (12). An electromagnet (22) is fixedly connected between the first fixing plate (1) and the second fixing plate (2), the electromagnet (22) is arranged at one end of the hook handle of the hook - shaped rod (23), and the hook - shaped rod (23) is made of a permanent magnetic material.

5. The material hoist for construction engineering according to claim 4, wherein: Bearing seat grooves (33) are formed on the adjacent surfaces of the first fixing plate (1) and the second fixing plate (2). A pressure sensor (26) is embedded in the inner side wall of the bearing seat groove (33) on the second fixing plate (2). The pressure sensor (26) is installed at one end where the two bearing seat grooves (33) are close to each other. The pulley (4) is rotatably arranged on the corresponding first fixing plate (1) and second fixing plate (2) through a rotating shaft, a bearing is sleeved on the rotating shaft, and the bearing is installed in the bearing seat groove (33).

6. The material hoist for construction engineering according to claim 2, characterized in that: The limiting block (20) obliquely penetrates downward through the side wall of the control box (14). A third elastic member (19) is fixedly connected to the outer side wall of the control box (14) near the position where the limiting block (20) penetrates. One end of the third elastic member (19) away from the control box (14) is fixedly connected with the limiting block (20).

7. An elevator for construction materials according to claim 6, characterized in that: A limiting plate (25) is fixedly connected to the outer circle of the wire column (24), the limiting plate (25) is annular, and the limiting plates (25) on the two wire columns (24) are arranged staggeredly. The arrangement of the limiting plate (25) is used to stagger the two towing ropes (12).

8. The material hoist for construction engineering according to claim 2, characterized in that: The upper traction wheel (5) is rotationally connected to the corresponding first fixing plate (1) and second fixing plate (2) through a rotating shaft. A rotating wheel (28) is fixedly connected to the outer circumferential surface of the rotating shaft. A plurality of groups of grooves (29) are formed on the outer circumferential surface of the rotating wheel (28). A telescopic block (31) is slidably arranged inside the groove (29). A fourth elastic member (30) is fixedly connected between the telescopic block (31) and the rotating wheel (28). An annular plate (27) is sleeved on the outer surface of the rotating wheel (28). The inner circumferential wall of the annular plate (27) is designed to be rough. The annular plate (27) is fixedly connected to the corresponding first fixing plate (1) and second fixing plate (2).

9. The material hoist for construction engineering according to claim 8, characterized in that: Two sets of the rotating wheels (28) are provided, and the two sets of rotating wheels (28) are respectively arranged on the front and rear sides of the upper traction wheel (5).

10. A construction hoist for construction materials according to claim 5, characterized in that: Photovoltaic panels (34) are installed on the opposite surfaces of the first fixing plate (1) and the second fixing plate (2). A battery is also installed on the first fixing plate (1) and the second fixing plate (2). The photovoltaic panel (34) is used to charge the battery through an inverter. The battery is used to supply power to the electromagnet (22) and the pressure sensor (26).

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