Material lifting equipment for construction engineering

Abstract

The present invention relates to the technical field of lifting equipment, and discloses a material lifting equipment for construction engineering, including a fixed frame, an external support, a winch and a cage, wherein the two fixed frames are symmetrically installed on the building platform, and the external support is hingedly installed on the fixed frame. The steel rope 1 on the winch passes around the external support to lift the cage, and after the winch lifts the cage to the platform where the fixed frame is located through the steel rope 1, the steel rope 1 pulls the external support to rotate, so that the cage is transferred to the platform. The present invention effectively solves the operation difficulties of traditional lifting equipment in space-constrained scenarios through structural innovation and safety design, and is more suitable for material lifting operations of low-rise buildings after the main structure is completed. By winding the steel rope 1, the cage is first lifted vertically to the platform height, and then the external support is pulled to rotate, so that the cage is smoothly transferred to the platform, thereby improving construction efficiency and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting equipment, in particular to a material hoisting equipment for construction engineering. Background Art

[0002] During the construction process, the lifting and transportation of materials is an extremely critical link. At present, the commonly used lifting equipment is tower cranes, cranes, elevators, boom cranes, winches, hand hoists, etc. Among them, tower cranes and elevators are used for lifting operations in high-rise buildings, cranes, boom cranes, and winches are suitable for lifting operations in medium and low-rise buildings, and boom cranes and hand hoists are suitable for material transfer operations in narrow sites.

[0003] In low-rise buildings and lifting operation environments with limited spaces, such as low-rise houses, shopping mall buildings, single-family low-rise office buildings, display buildings, etc., after the construction of the main concrete structure or steel structure is completed, isolation wall construction and subsequent decoration construction are required. At this time, materials above the second floor are generally lifted through narrower passages such as balcony passages. The lifting equipment uses a crane or a pull-beam crane for operation. The use of a crane will increase the rental cost of the equipment and has high technical requirements for the operator, which affects the construction efficiency to a certain extent. Although the pull-beam crane has a simple structure and operation, it is difficult to lift the material and transfer it horizontally to the platform. Manual transfer of the suspended material to the platform is required, which increases the risk of falling for construction workers. The existing rotating lifting equipment can solve this problem, but in a space-constrained environment, such as lifting materials in a balcony passage, it is limited by the rotation radius and cannot meet the rotation space requirements in a relatively narrow environment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a material lifting equipment for construction engineering.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a material lifting equipment for construction engineering, including a fixed frame, an external support, a winch and a cage, the fixed frame is provided with a vertical frame, the vertical frame is rotatably provided with a guide wheel 1, the vertical frame is provided with two cross beams, the outer support includes two shifting rods hingedly arranged on the fixed frame, the end of the shifting rod is rotatably provided with a shifting rotating rod, the middle section of the shifting rod is connected to the fixed rotating rod, the shifting rotating rod and the fixed rotating rod are respectively provided with a guide wheel 3 and a guide wheel 4, the cage includes a top plate, the top of the top plate is rotatably provided with a wire groove wheel 1, the winch includes a wire drum 1, the wire drum 1 is wound with a steel rope 1, the steel rope 1 passes around the guide wheel 1, the guide wheel 3, the wire groove wheel 1 and the guide wheel 4 in turn and is connected to the cross beam, after the winch lifts the cage to the platform where the fixed frame is located through the steel rope 1, the steel rope 1 pulls the outer support to rotate, so that the cage is transferred to the platform.

[0006] As an improvement: the end of the shifting rod is provided with an end platform, and an adjustment platform is movably provided on the end platform. The shifting turning rod is rotatably provided on two adjustment platforms, and a pressure wheel is rotatably provided on the adjustment platform to press the steel rope 1 onto the guide wheel 3. A braking mechanism is provided inside the adjustment platform. When the cage is overweight or the lifting acceleration of the cage is too high, the braking mechanism limits the rotation of the shifting turning rod and limits the lifting of the cage.

[0007] As an improvement: the braking mechanism includes a fixed rod inside the end platform and a friction wheel on the shifting rod, a brake plate cooperating with the friction wheel is provided at the end of the fixed rod, a slide is provided on the outside of the adjustment platform, and a brake cavity is provided on the inside, the slide slides in the groove inside the end platform, the fixed rod passes through the through hole inside the slide, the brake plate and the friction wheel are located in the brake cavity with a gap, and a spring connected to the end platform is provided at the bottom of the slide.

[0008] As an improvement: a limit rod is rotatably provided between the two end platforms, a limit frame is provided on the top of the top plate, and a slot is provided on the limit frame to cooperate with the limit rod.

[0009] As an improvement: the winch also includes a fixed plate, a motor, a gearbox, a drive shaft and a second winding drum. The motor and the gearbox are installed on the fixed plate, and the first winding drum and the second winding drum are rotatably arranged on the fixed plate. The motor drives the drive shaft to rotate through the internal gear set of the gearbox, and the drive shaft drives the first winding drum to rotate. An extension shaft passing through the inner through hole of the second winding drum is provided at one end of the drive shaft, and a transmission mechanism is provided at one end of the second winding drum. The transmission mechanism realizes the power connection between the extension shaft and the second winding drum. A second steel rope is wound on the second winding drum, and the second steel rope assists in pulling the shift rod to rotate.

[0010] As an improvement: the transmission mechanism includes a turntable at the end of the extension shaft and a turntable rotatably arranged on one side of the turntable, a plurality of radially arranged sliding grooves are evenly arranged on the outside of the turntable, an insert block is slidingly provided in the sliding groove, a slot cooperating with the insert block is provided at the inner through hole of one end of the winding drum, an arc-shaped platform is provided on the outside of the insert block, and a vortex groove slidingly cooperating with the arc-shaped platform is provided on the inside of the turntable.

[0011] As an improvement: a second friction wheel is provided on the outer side of the turntable, a brake rod is hingedly provided on the fixed plate, a second brake plate is provided at the end of the brake rod, and a second spring is connected between the brake rod and the fixed plate.

[0012] As an improvement: a damper is provided on the fixing frame, and a push plate is hingedly provided on the working end of the damper, and the push plate is in contact with the shifting rod when it is erected.

[0013] As an improvement: a pressing plate and a loading plate are provided under the top plate, and columns are provided at the corners of the loading plate. A second wire groove wheel is provided for rotation in the internal cavity of the column, and a pull rope is provided at the bottom corner of the top plate. The pull rope passes through the through hole on the column and around the second wire groove wheel before connecting to the pressing plate. A spring three is connected between the column and the pressing plate, and a limiting column is provided on the top of the column to cooperate with the pressing plate.

[0014] Compared with the existing technology, the present invention has the following advantages: through structural innovation and safety design, it effectively solves the operational difficulties of traditional lifting equipment in space-constrained scenarios, is more suitable for material lifting operations after the main structure of low-rise buildings is completed, and improves construction efficiency and safety. Specifically:

[0015] 1. The equipment first lifts the cage vertically to the platform height by winding the steel rope, and then pulls the outer bracket to rotate, so that the cage is smoothly transferred to the platform. It does not need to rely on cranes and other equipment, reducing rental costs, simplifying the operation process, and improving construction efficiency;

[0016] 2. When the cage is overweight or the upward acceleration is too high, the brake mechanism pushes the adjustment platform to move through the tension of the steel rope, so that the brake plate fits with the friction wheel, restricting the rotation of the displacement rod and stopping the cage from continuing to rise, avoiding safety accidents and reducing the risk of casualties and property losses;

[0017] 3. The hinged design of the external bracket reduces its rotation radius, making it suitable for narrow spaces such as balconies. This solves the problem of traditional rotating hoisting equipment being unable to be used in space-constrained environments, expands the equipment's application scenarios, eliminates the need for manual transfer of suspended materials, and reduces the risk of falls for construction workers during high-altitude operations.

[0018] 4. The winch realizes time-sharing operation of reel 1 and reel 2 through the transmission mechanism. Reel 1 operates independently during vertical lifting, while reel 2 assists in pulling the outer bracket during horizontal transfer. The power output is precise, improving operation efficiency and safety.

[0019] 5. The pressing plate in the cage cooperates with the pull rope and the spring to automatically press down the material during the lifting process to prevent shaking and scattering; the columns and limit columns limit the downward movement distance of the pressing plate to avoid excessive squeezing of the material and ensure the integrity of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the present invention Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the present invention Figure 2 .

[0022] Figure 3 It is a structural schematic diagram of the fixing frame of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the outer bracket and the winch of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the external support of the present invention.

[0025] Figure 6It is a partial exploded view of the outer bracket of the present invention.

[0026] Figure 7 It is a partial cross-sectional view of the external support of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the winch of the present invention.

[0028] Figure 9 It is an exploded view of the hoisting structure of the hoist of the present invention.

[0029] Figure 10 The explosion of the transmission mechanism of the present invention Figure 1 .

[0030] Figure 11 The explosion of the transmission mechanism of the present invention Figure 2 .

[0031] Figure 12 It is a structural schematic diagram of the cage of the present invention.

[0032] Figure 13 It is an exploded view of the cage of the present invention.

[0033] As shown in the figure: 1. Fixed frame; 2. External support; 3. Hoist; 4. Cage; 5. Steel rope 1; 6. Steel rope 2; 7. Steel rope 3; 11. Support plate; 12. Limit plate; 13. Vertical frame; 14. Guide wheel 1; 15. Guide wheel 2; 16. Crossbeam; 17. Damper; 18. Push plate; 21. Shifting rod; 22. End platform; 221. Fixed rod; 222. Brake plate 1; 223. Spring 1; 23. Adjusting platform; 231. Pressing wheel; 232. Slide; 233. Brake chamber; 24. Shifting rod; 241. Guide wheel 3; 242. Friction wheel 1; 25. Fixed rod; 251. Guide wheel 4; 26. Limiting rod; 31. Fixed Plate; 32. Motor; 33. Gearbox; 34. Drive shaft; 341. Extension shaft; 35. Reel 1; 36. Reel 2; 361. Slot; 37. Transmission mechanism; 371. Turntable; 372. Slide; 373. Insert; 374. Arc table; 375. Turntable; 376. Vortex groove; 377. Friction wheel 2; 38. Brake lever; 381. Brake plate 2; 382. Spring 2; 41. Top plate; 411. Slot wheel 1; 412. Limiting frame; 413. Card slot; 42. Loading plate; 421. Column; 422. Limiting column; 43. Pressing plate; 44. Pull rope; 45. Slot wheel 2; 46. Spring 3; 71. Movable pulley. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings.

[0035] Combined with attachment Figure 1 and attached Figure 2As shown, a material lifting equipment for construction projects includes a fixed frame 1, an outer support 2, a winch 3 and a cage 4. Two fixed frames 1 are symmetrically installed on the construction platform, and the outer support 2 is hingedly installed on the fixed frame 1. The steel rope 5 on the winch 3 passes around the outer support 2 to lift the cage 4. After the winch 3 lifts the cage 4 to the platform where the fixed frame 1 is located through the steel rope 5, the steel rope 5 pulls the outer support 2 to rotate, so that the cage 4 is transferred to the platform.

[0036] Combined with attachment Figure 3 , Attachment Figure 4 and attached Figure 12 As shown, the fixed frame 1 is provided with a vertical frame 13, the vertical frame 13 is rotatably provided with a guide wheel 14, the vertical frame 13 is provided with two cross beams 16, the outer bracket 2 includes two shifting rods 21 hingedly provided on the fixed frame 1, the end of the shifting rod 21 is rotatably provided with a shifting rotating rod 24, the middle section of the shifting rod 21 is connected to a fixed rotating rod 25, the shifting rotating rod 24 and the fixed rotating rod 25 are respectively provided with a guide wheel 3 241 and a guide wheel 4 251, the cage 4 includes a top plate 41, the top of the top plate 41 is rotatably provided with a line groove wheel 411, and the winch 3 includes A winding drum 35 is provided, and a steel rope 5 is wound around the winding drum 35. The steel rope 5 passes through the guide wheel 14, the guide wheel 3 241, the line groove wheel 411 and the guide wheel 4 251 in sequence and is connected to the crossbeam 16. A damper 17 is provided on the fixed frame 1. A push plate 18 is hingedly provided at the working end of the damper 17. The push plate 18 contacts the shift rod 21 when it is erected. A support plate 11 and a limit plate 12 are provided on the fixed frame 1. The support plate 11 supports the shift rod 21 in the initial position, and the limit plate 12 limits the shift rod 21 after rotation.

[0037] In construction scenarios, material hoisting has the dual needs of vertical lifting and horizontal transfer to the platform. Traditional equipment may be difficult to meet due to its complex structure, inconvenient operation or insufficient safety. This equipment solves the problem of lifting materials from a low place to the platform and accurately transferring them through structural adjustments and coordinated operations of the fixed frame 1, external bracket 2, winch 3 and cage 4, thereby improving construction efficiency and safety.

[0038] After the equipment is started, the winding drum 35 of the winch 3 begins to reel in the steel rope 5, and the steel rope 5 passes through the guide wheel 14 on the vertical frame 13 of the fixed frame 1, the guide wheel 3 241 on the shifting rod 24 of the outer bracket 2, the wire groove wheel 411 on the top plate 41 of the cage 4 and the guide wheel 4 251 on the fixed rotating rod 25 of the outer bracket 2, and is finally connected to the crossbeam 16 of the vertical frame 13 to form a closed-loop traction system; during the tightening of the steel rope 5, the cage 4 is lifted vertically, and when the bottom of the cage 4 reaches the platform height of the fixed frame, the winch 3 continues to reel in the steel rope 5. At this time, the steel rope 5 The pulling force will pull the shift rod 21 of the outer bracket 2. Since the shift rod 21 is hinged on the fixed frame 1, it begins to rotate around the hinge point under the action of the pulling force. When the shift rod 21 rotates to the vertical state, the push plate 18 of the damper 17 contacts the shift rod 21 to buffer the impact of the rotation. In the process of the shift rod 21 continuing to rotate, the damper 17 applies a thrust to the shift rod 21 through the push plate 18 to prevent the cage 4 from falling quickly onto the platform. When the shift rod 21 rotates to the position of the limit plate 12, it is limited. At this time, the cage has been transferred from the suspended state to the platform, completing the whole process of transferring the material from the hoisting to the platform.

[0039] Combined with attachment Figure 2 and attached Figure 5 As shown, the end of the shifting rod 21 is provided with an end platform 22, and an adjustment platform 23 is movably provided on the end platform 22. The shifting rod 24 is rotatably provided on the two adjustment platforms 23. The adjustment platform 23 is rotatably provided with a pressure wheel 231 that presses the steel rope 1 5 onto the guide wheel 3 241. A braking mechanism is provided inside the adjustment platform 23. When the cage 4 is overweight or the lifting acceleration of the cage 4 is too high, the braking mechanism limits the rotation of the shifting rod 24, thereby limiting the lifting of the cage 4.

[0040] Combined with attachment Figure 5 , Attachment Figure 6 and attached Figure 7 As shown, the braking mechanism includes a fixed rod 221 inside the end platform 22 and a friction wheel 242 on the shifting rod 24. A brake plate 222 cooperating with the friction wheel 242 is provided at the end of the fixed rod 221. A slide 232 is provided on the outside of the adjustment platform 23, and a brake cavity 233 is provided on the inside. The slide 232 is slidably arranged in the internal groove of the end platform 22. The fixed rod 221 passes through the inner through hole of the slide 232. The brake plate 222 and the friction wheel 242 are located in the brake cavity 233 with a gap. A spring 223 connected to the end platform 22 is provided at the bottom of the slide 232.

[0041] Combined with attachment Figure 5 and attached Figure 12 As shown, a limiting rotating rod 26 is rotatably provided between the two end platforms 22 , a limiting frame 412 is provided on the top of the top plate 41 , and a slot 413 that cooperates with the limiting rotating rod 26 is provided on the limiting frame 412 .

[0042] Since the position change rod 21 is an articulated design, there will be more stringent restrictions on the lifting weight. In order to avoid damage to the external bracket 2 during the lifting process, a braking mechanism is added to the external bracket 2 to prevent the cage 4 from being overweight or overspeeding, thereby improving the safety of equipment lifting. The braking mechanism is the core protection component for the safe operation of the equipment, and automatic intervention in the overweight or overspeed state of the cage 4 is achieved through the linkage of the mechanical structure.

[0043] In the braking mechanism, the fixed rod 221 passes through the inner through hole of the adjustment platform 23, and the brake plate 222 at its end is located in the brake cavity with a gap between it and the friction wheel 242 on the shifting rod 24. Under normal circumstances, when the cage 4 is lifted vertically, the brake plate 222 and the friction wheel 242 do not contact, and the cage 4 is lifted normally. If the cage 4 is overweight or the rising acceleration is too high, the tension of the steel rope 5 increases sharply, and the pressure of the steel rope 5 on the guide wheel 3 241 increases, and the braking mechanism intervenes immediately.

[0044] The sum of the tension vectors of the steel rope 5 on both sides of the guide wheel three 241 is the resultant force acting on the guide wheel three 241, and the direction is the angle between the steel rope 5 and the tangent of the guide wheel three 241. The pressure acting on the guide wheel three 241 will force the adjustment platform 23 to move toward the end platform 22, compressing the spring 1 223. When this pressure is too large (exceeding the overweight and rising acceleration warning value), the brake plate 1 222 fits tightly with the friction wheel 1 242, and the rotation of the displacement rod 24 is limited by friction. Because the pressure wheel 231 on the adjustment platform 23 presses the steel rope 5 stably on the guide wheel three 241, it is ensured that the steel rope 5 will not slip or deviate on the guide wheel three 241, thereby preventing the cage 4 from continuing to rise, avoiding safety accidents. After reducing the load of the cage 4 or reducing the rising acceleration, the tension of the steel rope 5 is reduced, and the spring 1 223 pushes the slide 232 to reset, so that the brake plate 1 222 is separated from the friction wheel 1 242, thereby resuming normal lifting work.

[0045] After the cage 4 reaches the platform position, the slot 413 on the limit frame 412 contacts the limit rotating rod 26, and is blocked by the limit rotating rod 26, so that the cage 4 cannot rise. At this time, the winch 3 is still winding the steel rope 5, which will also cause the braking mechanism to intervene and limit the rotation of the shifting rotating rod 24. At this time, the winding of the steel rope 5 will pull the outer bracket 2 to rotate, so that the cage 4 is transferred to the platform.

[0046] Combined with attachment Figure 4 , Attachment Figure 8 and attached Figure 9As shown, the winch 3 also includes a fixed plate 31, a motor 32, a gearbox 33, a drive shaft 34 and a winding drum 2 36. The motor 32 and the gearbox 33 are installed on the fixed plate 31, and the winding drum 1 35 and the winding drum 2 36 are rotatably arranged on the fixed plate 31. The motor 32 drives the drive shaft 34 to rotate through the internal gear set of the gearbox 33, and the drive shaft 34 drives the winding drum 1 35 to rotate. One end of the drive shaft 34 is provided with an extension shaft 341 passing through the inner through hole of the winding drum 2 36, and one end of the winding drum 2 36 is provided with a transmission mechanism 37. The transmission mechanism 37 realizes the power connection between the extension shaft 341 and the winding drum 2 36. A steel rope 2 6 is wound around the winding drum 2 36, and the steel rope 2 6 assists in pulling the shift rod 21 to rotate.

[0047] Combined with attachment Figure 3 and attached Figure 4 As shown, a steel rope 2 6 is wound around the winding drum 2 36, a guide wheel 2 15 is rotatably provided on the vertical frame 13, a steel rope 3 7 is provided on the outer side of the end platform 22, and the end of the steel rope 3 7 is connected to a movable pulley 71. One end of the steel rope 2 6 passes around the guide wheel 2 15 and the movable pulley 71 in sequence and then connects to the crossbeam 16.

[0048] Combined with attachment Figure 8 , Attachment Figure 9 , Attachment Figure 10 and attached Figure 11 As shown, the transmission mechanism 37 includes a turntable 371 at the end of the extension shaft 341 and a turntable 375 rotatably arranged on one side of the turntable 371, a plurality of radially arranged sliding grooves 372 are evenly arranged on the outer side of the turntable 371, and an insert block 373 is slidably arranged in the sliding groove 372, a slot 361 is provided at the inner through hole of one end of the winding drum 36 to cooperate with the insert block 373, an arc-shaped platform 374 is provided on the outer side of the insert block 373, a vortex groove 376 is provided on the inner side of the turntable 375 to slide with the arc-shaped platform 374, a friction wheel 2 377 is provided on the outer side of the turntable 375, a brake rod 38 is hingedly provided on the fixed plate 31, a brake plate 2 381 is provided at the end of the brake rod 38, and a spring 2 382 is connected between the brake rod 38 and the fixed plate 31.

[0049] In the work of combining vertical lifting and displacement transfer required by this equipment, the winch, as the core power device, needs to take into account the different power requirements of cage lifting and external bracket rotation. The traditional single-drum design is difficult to meet complex working conditions. The winch 3 in this equipment effectively solves this problem through the unique double-drum and transmission mechanism 37 design, realizing efficient operation of material lifting and transfer.

[0050] After motor 32 is started, power is transmitted to drive shaft 34 via the gear train within transmission 33, which increases torque and speed. Drive shaft 34 directly drives winding drum 1 35, causing the steel rope 1 5 wound around it to begin winding, lifting cage 4 vertically to the platform level of fixed frame 1. At this stage, although the extension shaft 341 at one end of drive shaft 34 rotates coaxially with winding drum 2 36, the insert block 373 in transmission mechanism 37 is not inserted into the slot 361 of winding drum 2. The two are in a separated state, and winding drum 2 36 remains stationary.

[0051] When the cage 4 reaches the specified height and needs to be transferred to the platform, the operator manually presses the brake lever 38, and the brake lever rotates around the hinge point to overcome the elastic force of the spring 2 382. The brake plate 2 381 at the end contacts the friction wheel 2 377, causing the turntable 375 and the turntable 371 to rotate relative to each other. With the cooperation of the vortex groove 376 and the arc table 374, the plug block 373 is pushed to slide radially along the slide groove 372 and inserted into the slot 361 of the winding drum 2 36, so that the extension shaft 341 is dynamically connected with the winding drum 2 36. At this time, the driving shaft 34 drives the winding drum 2 36 to rotate synchronously, and the steel rope 2 6 wound on the winding drum 2 36 begins to reel. The steel rope 2 6 successively passes around the guide wheel 2 15 and the movable pulley 71 and then connects to the crossbeam 16. The labor-saving characteristics of the movable pulley 71 are used to assist in pulling the shift rod 21 to rotate, so that the cage 4 is smoothly transferred to the platform.

[0052] During the process of the cage 4 being transferred from the platform to the suspended position, the extension shaft 341 maintains a power connection with the winding drum 2 36, and the steel rope 2 6 is released. After the shifting rod 21 contacts the support plate 11, the cage 4 is in a suspended position. The operator manually presses the brake lever 38. Since the winding drum 2 36 is in a reverse state, the turntable 375 and the turntable 371 are in relative rotation, and the turntable 375 also reverses. With the cooperation of the vortex groove 376 and the arc table 374, the plug block 373 disengages from the slot 361, thereby realizing the power separation of the extension shaft 341 and the winding drum 2 36, and the rotation of the winding drum 2 36 stops.

[0053] In order to improve the precise control of the transmission mechanism 37, a sensor can be added to the edge of the platform or a pressure sensor can be added to the slot 413. The brake plate 2 381 is changed to be driven by an electric push rod. After the cage 4 rises to the platform position, a signal is triggered to make the electric push rod push the brake plate 2 381 to contact the friction wheel 2 377, thereby realizing the power connection between the extension shaft 341 and the winding drum 2 36.

[0054] During the entire working process, the winch 3 realizes the time-sharing operation of the reel 1 35 and the reel 2 36 through the clutch switching of the transmission mechanism 37, which not only ensures the stable lifting of the cage 4, but also ensures the accurate power output when the outer bracket rotates, greatly improving the efficiency and safety of the material lifting operation.

[0055] Combined with attachment Figure 12and attached Figure 13 As shown, a pressing plate 43 and a loading plate 42 are provided under the top plate 41, and columns 421 are provided at the corners of the loading plate 42. A second wire groove wheel 45 is rotatably provided at the internal cavity of the column 421, and a pull rope 44 is provided at the bottom corner of the top plate 41. The pull rope 44 passes through the through hole on the column 421 and bypasses the second wire groove wheel 45 to connect to the pressing plate 43. A third spring 46 is connected between the column 421 and the pressing plate 43, and a limiting column 422 is provided on the top of the column 421 to cooperate with the pressing plate 43.

[0056] During the hoisting process of construction materials, the stable placement of materials in the cage 4 is the key to ensuring transportation safety. If there is a lack of effective fixing measures, risks such as shaking and scattering are likely to occur. This equipment constructs a clamping system by arranging a pressure plate 43, a loading plate 42 and related components under the cage top plate 41 to effectively solve the problems of material fixation and transportation stability.

[0057] When the material is placed on the loading plate 42, the pressing plate 43 is in an initial position close to the top plate 41 under the elastic force of spring three 46. As the winch 3 starts, the reel one 35 reels in the steel rope one 5, and the top plate 41 begins to rise. During the rising process, the pull rope 44 is guided by the wire groove wheel two 45, and the upward pulling force of the pull rope 44 from the top plate 41 is converted into a downward pulling force of the pull rope 44 on the pressing plate 43, causing the pressing plate 43 to move downward. At this time, the spring three 46 is compressed, and the pressing plate 43 is pressed on the material to prevent the material from scattering. The limit column 422 at the top of the column 421 limits the downward movement distance of the pressing plate 43 to prevent it from causing excessive squeezing and damage to the material. An elastic pressing structure can be provided at the bottom of the pressing plate 43 to avoid compressive damage to the fragile material.

[0058] When the cage 4 is transferred to the platform, the loading plate 42 is placed on the platform. After the top plate 41 moves downward for a distance, the shifting rod 21 moves to the limit plate 12. During this process, the pressing plate 43 returns to its initial position under the restoring force of spring three 46, so that the pressing plate 43 leaves the top of the material, and the operator can easily remove the material, which effectively improves the reliability of the lifting operation.

[0059] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above and, without departing from the purpose of the present invention, designs structures and embodiments similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. A material lifting device for construction engineering, comprising a fixed frame (1), an outer bracket (2), a winch (3) and a cage (4), characterized in that: A stand (13) is provided on the fixed frame (1), and a guide wheel (14) is rotatably provided on the stand (13); The outer bracket (2) includes two shifting rods (21) hingedly mounted on the fixed frame (1), an end portion of the shifting rod (21) is provided with an end platform (22), an adjustment platform (23) is movably mounted on the end platform (22), a shifting rotating rod (24) is rotatably mounted on the two adjustment platforms (23), a fixed rotating rod (25) is connected to the middle section of the shifting rod (21), a guide wheel three (241) and a guide wheel four (251) are respectively mounted on the shifting rotating rod (24) and the fixed rotating rod (25), and a limit rotating rod (26) is mounted on the shifting rod (21) between the shifting rotating rod (24) and the fixed rotating rod (25); A damper (17) is provided on the fixed frame (1), and a push plate (18) is hingedly provided at the working end of the damper (17), and the push plate (18) contacts the shifting rod (21) when the device is erected; A line groove wheel (411) is provided on the cage (4); The winch (3) includes a winding drum (35), the winding drum (35) is wound with a steel rope (5), the steel rope (5) is passed through a guide wheel (14), a guide wheel (241), a line groove wheel (411) and a guide wheel (251) in sequence, and then connected to a stand (13); The hoist (3) lifts the cage (4) to the platform where the fixed frame (1) is located through the steel rope (5). The cage (4) stops moving upward after being limited by the limit rod (26). The steel rope (5) pulls the outer bracket (2) to rotate, so that the cage (4) is transferred to the platform; The adjusting platform (23) is provided with a brake mechanism inside, and the brake mechanism includes a fixed rod (221) inside the end platform (22) and a friction wheel (242) on the shifting rod (24); a brake plate (222) cooperating with the friction wheel (242) is provided at the end of the fixed rod (221); a slide (232) is provided on the outside of the adjusting platform (23) and a brake cavity (233) is provided on the inside; the slide (232) is slidably arranged in the groove inside the end platform (22); the fixed rod (221) passes through the inner through hole of the slide (232); the brake plate (222) and the friction wheel (242) are located in the brake cavity (233) with a gap; a spring (223) connected to the end platform (22) is provided at the bottom of the slide (232); The hoist (3) further comprises a motor (32), a gearbox (33), a drive shaft (34) and a second winding drum (36). The motor (32) drives the drive shaft (34) to rotate via an internal gear set of the gearbox (33). The drive shaft (34) drives the first winding drum (35) to rotate. An extension shaft (341) passing through an inner through hole of the second winding drum (36) is provided at one end of the drive shaft (34). A transmission mechanism (37) is provided at one end of the second winding drum (36). The transmission mechanism (37) realizes The extension shaft (341) is connected to the second winding drum (36) by power, and the second winding drum (36) is wound with a steel rope (6). The second steel rope (6) assists in pulling the shifting rod (21) to rotate. During the vertical lifting stage of the cage (4), the transmission mechanism (37) is separated from the second winding drum (36), and the second winding drum (36) remains stationary. When the cage (4) reaches the specified height and needs to be transferred to the platform, the drive shaft (34) drives the second winding drum (36) to rotate synchronously through the transmission mechanism (37).

2. The material lifting equipment for construction engineering according to claim 1, characterized in that: A pressing wheel (231) is provided on the adjusting platform (23) for pressing the steel rope (5) onto the guide wheel (241). When the cage (4) is overweight or the lifting acceleration of the cage (4) is too high, the braking mechanism limits the rotation of the shifting rod (24) and limits the lifting of the cage (4).

3. The material lifting equipment for construction engineering according to claim 1, characterized in that: A limit rod (26) is rotatably provided between the two end platforms (22), and the cage (4) includes a top plate (41). A limit frame (412) is provided on the top of the top plate (41), and a slot (413) is provided on the limit frame (412) that cooperates with the limit rod (26).

4. The material lifting equipment for construction engineering according to claim 1, characterized in that: The hoist (3) further comprises a fixed plate (31), a motor (32) and a gearbox (33) are mounted on the fixed plate (31), and a winding drum 1 (35) and a winding drum 2 (36) are rotatably mounted on the fixed plate (31).

5. The material lifting equipment for construction engineering according to claim 1, characterized in that: The transmission mechanism (37) includes a turntable (371) at the end of the extension shaft (341) and a turntable (375) rotatably arranged on one side of the turntable (371), a plurality of radially arranged slide grooves (372) are evenly arranged on the outer side of the turntable (371), an insert block (373) is slidably arranged in the slide groove (372), a slot (361) is provided at the inner through hole of one end of the winding drum (36) to cooperate with the insert block (373), an arc-shaped platform (374) is provided on the outer side of the insert block (373), and a vortex groove (376) is provided on the inner side of the turntable (375) to slide with the arc-shaped platform (374).

6. The material lifting equipment for construction engineering according to claim 5, characterized in that: A second friction wheel (377) is provided on the outer side of the rotating disk (375), a brake rod (38) is hingedly provided on the fixed plate (31), a second brake plate (381) is provided at the end of the brake rod (38), and a second spring (382) is connected between the brake rod (38) and the fixed plate (31).

7. The material lifting equipment for construction engineering according to claim 3, characterized in that: A pressing plate (43) and a loading plate (42) are provided below the top plate (41), and columns (421) are provided at the corners of the loading plate (42). A second line groove wheel (45) is rotatably provided at the internal cavity of the column (421). A pull rope (44) is provided at the bottom corner of the top plate (41), and the pull rope (44) passes through the through hole on the column (421) and bypasses the second line groove wheel (45) to connect to the pressing plate (43). A third spring (46) is connected between the column (421) and the pressing plate (43), and a limiting column (422) that cooperates with the pressing plate (43) is provided at the top of the column (421).

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