A construction lifting platform

Abstract

The present invention belongs to the technical field of tunnel construction, specifically a working construction lifting platform, including a steel pipe and a bearing plate, a plurality of steel pipes are provided, and the plurality of steel pipes are combined into a portal scaffold through a clamp, a placement frame, which is detachably mounted on the top of the bearing plate, and a take-up roller driven by a driving motor is provided above the placement frame, a pull rope is fixedly connected to the take-up roller, and the other end of the pull rope is fixedly connected to the bearing frame, a support rod, which is fixedly mounted on the top of the placement frame, a reciprocating screw rod is rotatably mounted on the support rod, a rope control block is slidably mounted on the reciprocating screw rod, and the pull rope passes through the rope control block. Through the coordinated use of the above structures, the pull rope can be effectively made more neat when wound or unwound, and the problem of uneven tension and pressure causing damage to the pull rope and reducing its service life is reduced, thereby effectively improving the service life of the pull rope and improving the safety when lifting goods.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, in particular to an operation construction lifting platform. Background Art

[0002] Tunnel construction refers to the comprehensive engineering activity of constructing underground passageways or caverns using specific construction techniques and methods, including excavation, support, drainage, and ventilation, in geologically complex and spatially constrained environments. This process encompasses everything from pre-construction site surveys, equipment and material preparation, and personnel training, to key steps during construction, including excavation, support, drainage, and ventilation, and finally post-construction inspections and maintenance.

[0003] During the tunnel lining construction process, it is necessary to build a certain construction platform in the narrow tunnel space to place the winch. As an important part of the lifting system, the winch can automatically lift construction materials such as waterproof boards to the required height, realize mechanized operation, and further improve construction efficiency and quality. However, the conventional winch reels the rope by rotating the reel to shorten the rope to achieve the effect of lifting objects. However, the reel in the existing technology can often only be reeled at a fixed point, which means that the rope can only be reeled and stacked at a certain place on the reel when reeling. The stacked and wound ropes may be subjected to uneven tension and pressure during the reeling process, resulting in changes in the internal fiber structure of the rope, thereby reducing the life of the rope and increasing the risk when lifting goods.

[0004] To this end, the present invention provides a construction hoisting platform. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the working construction lifting platform of the present invention comprises a steel pipe and a bearing plate, wherein a plurality of steel pipes are provided, and the plurality of steel pipes are connected to form a portal scaffold through a clamp;

[0007] The mounting frame is detachably mounted on the top of the supporting plate. A take-up roller driven by a driving motor is provided above the mounting frame. A pull rope is fixedly connected to the take-up roller, and the other end of the pull rope is fixedly connected to the supporting frame.

[0008] The support rod is fixedly mounted on the top of the mounting frame, a reciprocating screw rod is rotatably mounted on the support rod, a rope control block is slidably mounted on the reciprocating screw rod, and the pull rope passes through the rope control block;

[0009] The transmission assembly is arranged above the placement frame and is used for transmission between the take-up roller and the reciprocating screw rod.

[0010] The transmission assembly includes a first transmission gear and a second transmission gear. The first transmission gear is fixedly installed on one side of the take-up roller, and the second transmission gear is rotatably installed on the side wall of the support rod. The first transmission gear is meshed with the second transmission gear.

[0011] A connecting rod is detachably mounted on one side of the mounting frame, an auxiliary plate is rotatably mounted on the other end of the connecting rod, a control block is detachably mounted on the steel pipe, and a pressing rod for pressing the auxiliary plate is slidably mounted inside the control block.

[0012] The third transmission gear is installed for rotation inside the control block, and a first transmission rod is provided on the top of the third transmission gear. The other end of the first transmission rod extends to the inside of the mounting frame, and a tooth plate is fixedly installed on one end of the pressure rod close to the third transmission gear, and the third transmission gear is meshed with the tooth plate.

[0013] A second transmission rod is rotatably mounted inside the mounting frame, a worm is fixedly mounted on the outer wall of the second transmission rod, a worm wheel is rotatably mounted inside the mounting frame, the worm wheel is meshed with the worm, and the bottom end of the worm wheel is fixedly connected to the first transmission rod;

[0014] A rope guide assembly is provided inside the placement frame for controlling the rotation of the second transmission rod by moving the pull rope.

[0015] The rope guide assembly includes a rope guide roller, a fourth transmission gear and a fifth transmission gear. The rope guide roller is rotatably mounted on the top of the auxiliary plate, the pull rope is laid on the outer wall of the rope guide roller, the fourth transmission gear is fixedly mounted on the outer wall of the rope guide roller, and the outer wall of the second transmission rod is fixedly mounted with a fifth transmission gear, and the fifth transmission gear is engaged with the fourth transmission gear.

[0016] The fifth transmission gear is configured as a sector gear.

[0017] A guide groove is provided on the auxiliary plate, the guide groove is tilted upward, a plurality of guide grooves are provided, and the plurality of guide grooves are symmetrically arranged in two rows on both sides of the pull rope, and functional rods are elastically installed inside the plurality of guide grooves.

[0018] A pressing spring is fixedly installed inside the guide groove, and the other end of the pressing spring is in contact with the functional rod.

[0019] A pressing plate for pressing the functional rod is slidably installed on one end of the auxiliary plate close to the pressing rod. A receiving groove for sliding the pressing plate is provided inside the auxiliary plate. The receiving groove is connected to the guide groove, and one end of the functional rod abuts against the pressing plate.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The working construction lifting platform described in the present invention drives the first transmission gear to rotate at the same time through the rotation of the take-up roller, and with the cooperation of the second transmission gear, the reciprocating screw rotates to control the rope control block to slide back and forth left and right, and guide the pull rope, so that the pull rope can be wound or unwound more neatly, reducing the problem of uneven tension and pressure that damages the pull rope and reduces its service life, effectively increasing the service life of the pull rope, and at the same time improving the safety when lifting goods.

[0022] 2. The working construction lifting platform described in the present invention, when the pull rope is lifted by the take-up roller, the rope guide roller rotates counterclockwise under the action of friction, and the fourth transmission gear and the fifth transmission gear cooperate to drive the pressure rod to press the auxiliary plate, so that the auxiliary plate is tilted, and the pressure plate will also push out the functional rod. If the pull rope breaks, the bearing frame will slide downward along the outer wall of the inclined auxiliary plate. At this time, the functional rod arranged below will block the falling bearing frame, effectively increasing the falling protection of the bearing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a stereogram of the present invention;

[0025] Figure 2 It is a stereogram from another perspective in the present invention;

[0026] Figure 3 In the present invention Figure 2 A magnified view of point A in the figure;

[0027] Figure 4 It is a schematic diagram of the structure of the control block in the present invention;

[0028] Figure 5 In the present invention Figure 4 Enlarged view of point B in FIG.

[0029] Figure 6 It is a structural schematic diagram of the guide groove in the present invention.

[0030] In the figure: 1. load-bearing plate; 2. steel pipe; 3. drive motor; 4. take-up roller; 5. pull rope; 6. load-bearing frame; 7. control block; 8. placement frame; 9. auxiliary plate; 10. first transmission gear; 11. second transmission gear; 12. reciprocating screw; 13. rope control block; 14. rope guide roller; 15. fourth transmission gear; 16. fifth transmission gear; 17. second transmission rod; 18. worm; 19. worm wheel; 20. first transmission rod; 21. pressure rod; 22. third transmission gear; 23. tooth plate; 24. pressure plate; 25. guide groove; 26. functional rod; 27. pressure spring; 28. receiving groove; 29. connecting rod; 30. support rod; 31. counterweight. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] like Figures 1 to 6 As shown, a construction hoisting platform according to an embodiment of the present invention includes a steel pipe 2 and a bearing plate 1. A plurality of steel pipes 2 are provided, and the plurality of steel pipes 2 are connected by hoops to form a portal scaffold.

[0033] This process uses multiple steel pipes 2 to form a portal scaffolding. Combined with the flexible design of the steel pipes 2, it greatly shortens the construction and disassembly time of the operating platform and effectively improves construction efficiency. This design allows each module to be built independently, greatly improving the flexibility and efficiency of on-site operations. The rapid connection and disassembly function between modules further shortens the construction and disassembly time of the operating platform, especially within the limited skylight operation time, the platform can be quickly built to ensure continuous construction.

[0034] The mounting frame 8 is detachably mounted on the top of the supporting plate 1. A take-up roller 4 driven by a drive motor 3 is provided above the mounting frame 8. A pull rope 5 is fixedly connected to the take-up roller 4. The other end of the pull rope 5 is fixedly connected to the supporting frame 6.

[0035] The mounting frame 8 is installed on the top of the supporting plate 1 by common bolts. The driving motor 3 provided on the mounting frame 8 can drive the take-up roller 4 to rotate. At this time, the pull rope 5 on the take-up roller 4 is either in the reeling state or in the unreeling state. When reeling, the supporting frame 6 can be lifted, and when unreeling, the supporting frame 6 can be lowered.

[0036] The support rod 30 is fixedly mounted on the top of the mounting frame 8. The reciprocating screw rod 12 is rotatably mounted on the support rod 30. The rope control block 13 is slidably mounted on the reciprocating screw rod 12. The pull rope 5 passes through the rope control block 13.

[0037] Two support rods 30 are provided, and the two support rods 30 are symmetrically mounted on the mounting frame 8. The reciprocating screw rod 12 is rotatably mounted between the two support rods 30. By applying a force to the reciprocating screw rod 12, the reciprocating screw rod 12 can be rotated. At this time, the rope control block 13 will slide back and forth on the outer wall of the reciprocating screw rod 12. Since the pull rope 5 passes through the rope control block 13, when the rope control block 13 slides back and forth on the outer wall of the reciprocating screw rod 12, it will drive the rope control block 13 to slide back and forth synchronously, thereby guiding the pull rope 5, so that when the take-up roller 4 rotates, the pull rope 5 is evenly wound around the outer wall of the take-up roller 4, effectively ensuring that the pull rope 5 is more neat when winding, reducing the uneven tension and pressure that causes the internal fiber structure of the pull rope 5 to change, resulting in a reduced service life of the pull rope 5, further improving the service life of the pull rope 5, and at the same time improving the safety when lifting goods.

[0038] The transmission assembly is arranged above the mounting frame 8 and is used for transmission between the take-up roller 4 and the reciprocating screw rod 12. Through the transmission assembly, when the take-up roller 4 rotates, the reciprocating screw rod 12 can be driven to rotate at the same time, ensuring that when the pull rope 5 is wound or unwound, the rope control block 13 drives the pull rope 5 to guide in time, further increasing the guiding effect.

[0039] As a preferred embodiment of the present invention, the transmission assembly includes a first transmission gear 10 and a second transmission gear 11. The first transmission gear 10 is fixedly mounted on one side of the take-up roller 4, and the second transmission gear 11 is rotatably mounted on the side wall of the support rod 30. The first transmission gear 10 is meshed with the second transmission gear 11.

[0040] When the driving motor 3 drives the take-up roller 4 to rotate, it will also drive the first transmission gear 10 to rotate, and the second transmission gear 11 meshed with it will also rotate at the same time. Therefore, when the take-up roller 4 is taking up and unwinding the rope 5, it will drive the reciprocating screw rod 12 to rotate, so that the rope control block 13 guides the rope 5, making the rope 5 more neat when winding or unwinding.

[0041] As a preferred embodiment of the present invention, a connecting rod 29 is detachably installed on one side of the mounting frame 8, and an auxiliary plate 9 is rotatably installed on the other end of the connecting rod 29. A control block 7 is detachably installed on the steel pipe 2, and a pressing rod 21 for pressing the auxiliary plate 9 is slidably installed inside the control block 7.

[0042] The connecting rod 29 is fixedly connected to the mounting frame 8 by bolts, which can limit the position of the auxiliary plate 9. The auxiliary plate 9 can be rotated on the connecting rod 29 under force. The control block 7 is installed on the steel pipe 2 through a clamp. By controlling the pressure rod 21 to slide toward the auxiliary plate 9 and press the auxiliary plate 9, the auxiliary plate 9 is rotated on the connecting rod 29. At this time, the auxiliary plate 9 will be in an inclined direction. At this time, if the pull rope 5 is reeled in, the supporting frame 6 can slide upward along the outer wall of the auxiliary plate 9, which can reduce the problem of shaking of the supporting frame 6 during the lifting process. Therefore, it can effectively reduce the problem of lateral friction of the pull rope 5 due to the shaking of the supporting frame 6, thereby further improving the service life of the pull rope 5.

[0043] As a preferred embodiment of the present invention, a third transmission gear 22 is rotatably installed inside the control block 7, a first transmission rod 20 is provided at the top of the third transmission gear 22, the other end of the first transmission rod 20 extends to the interior of the mounting frame 8, and a tooth plate 23 is fixedly installed at one end of the pressure rod 21 close to the third transmission gear 22, and the third transmission gear 22 is engaged with the tooth plate 23.

[0044] By rotating the third transmission gear 22, the push rod 21 can be driven to slide inside the control block 7. When the push rod 21 slides toward the auxiliary plate 9, the auxiliary plate 9 will be tilted. By reversely controlling the rotation of the third transmission gear 22, the push rod 21 can be retracted into the interior of the control block 7, thereby releasing the pressure on the auxiliary plate 9. At this time, the auxiliary plate 9 will rotate downward and be in a vertical state.

[0045] As a preferred embodiment of the present invention, a second transmission rod 17 is rotatably mounted inside the mounting frame 8, a worm 18 is fixedly mounted on the outer wall of the second transmission rod 17, a worm gear 19 is rotatably mounted inside the mounting frame 8, the worm gear 19 is engaged with the worm 18, and the bottom end of the worm gear 19 is fixedly connected to the first transmission rod 20;

[0046] A rope guide assembly is provided inside the placement frame 8 for controlling the rotation of the second transmission rod 17 by moving the pull rope 5 .

[0047] The second transmission rod 17 is controlled to rotate by the rope guide assembly, which can simultaneously drive the worm 18 to rotate. At this time, the worm wheel 19 will drive the first transmission rod 20 to rotate, causing the third transmission gear 22 to rotate, and with the cooperation of the tooth plate 23, drive the push rod 21 to slide inside the control block 7.

[0048] By providing the rope guide assembly, when the take-up roller 4 reels the pull rope 5 , the second transmission rod 17 can be controlled to rotate by the movement of the pull rope 5 .

[0049] As a preferred embodiment of the present invention, the rope guide assembly includes a rope guide roller 14, a fourth transmission gear 15 and a fifth transmission gear 16. The rope guide roller 14 is rotatably mounted on the top of the auxiliary plate 9, the pull rope 5 is laid on the outer wall of the rope guide roller 14, the fourth transmission gear 15 is fixedly mounted on the outer wall of the rope guide roller 14, and the outer wall of the second transmission rod 17 is fixedly mounted with a fifth transmission gear 16, and the fifth transmission gear 16 is engaged with the fourth transmission gear 15.

[0050] The pull rope 5 fits against the outer wall of the rope guide roller 14. When the take-up roller 4 rotates to reel in the pull rope 5, the pull rope 5 will pass through the outer wall of the rope guide roller 14. Under the action of friction, the rope guide roller 14 will be driven to rotate counterclockwise. At the same time, the fourth transmission gear 15 will also rotate counterclockwise. At this time, the fifth transmission gear 16 will rotate clockwise, and then the worm 18 and the worm wheel 19 will be driven by the second transmission rod 17 to rotate the third transmission gear 22. With the cooperation of the tooth plate 23, the pressing rod 21 is driven to slide inside the control block 7 toward the auxiliary plate 9, and press the auxiliary plate 9 to tilt the auxiliary plate 9.

[0051] When the take-up roller 4 is unwinding, the carrying frame 6 slides down on the outer wall of the auxiliary plate 9 under the action of gravity, and at the same time, it will pull the pull rope 5 to move. At this time, the rope guide roller 14 rotates clockwise under the action of friction, and drives the fifth transmission gear 16 to rotate counterclockwise through the fourth transmission gear 15, and drives the worm 18 and the worm wheel 19 to rotate through the second transmission rod 17, so that the third transmission gear 22 drives the push rod 21 to slide in the direction away from the auxiliary plate 9. At this time, the auxiliary plate 9 will be released from the tilted state and become vertical.

[0052] As a preferred embodiment of the present invention, the fifth transmission gear 16 is configured as a sector gear.

[0053] By configuring the fifth transmission gear 16 as a sector gear, when the pull rope 5 is wound, the continuously rotating fourth transmission gear 15 will not affect the sliding distance of the push rod 21 controlled by the fifth transmission gear 16 .

[0054] As a preferred embodiment of the present invention, a guide groove 25 is provided on the auxiliary plate 9, and the guide groove 25 is arranged to be inclined upward. There are multiple guide grooves 25, and the multiple guide grooves 25 are symmetrically arranged in two rows on both sides of the pull rope 5. Functional rods 26 are elastically installed inside the multiple guide grooves 25, and a pressure spring 27 is fixedly installed inside the guide groove 25, and the other end of the pressure spring 27 is in contact with the functional rod 26.

[0055] The pull rope 5 is located between the symmetrical functional rods 26. The functional rods 26 block the pull rope 5, thereby further reducing the swing range of the pull rope 5.

[0056] The functional rod 26 is slidably mounted inside the guide groove 25 . When one end of the functional rod 26 extends out of the outer wall of the auxiliary plate 9 , the functional rod 26 can limit the swing of the pull rope 5 .

[0057] The provided pressing spring 27 can keep the functional rod 26 at the bottom of the guide slot 25 at all times. When the functional rod 26 slides upward from the bottom of the guide slot 25 , it presses the pressing spring 27 , causing it to deform and store elastic potential energy.

[0058] As a preferred embodiment of the present invention, a pressing plate 24 for pressing the functional rod 26 is slidably installed on one end of the auxiliary plate 9 close to the pressing rod 21. A receiving groove 28 for sliding the pressing plate 24 is provided inside the auxiliary plate 9. The receiving groove 28 is connected to the guide groove 25, and one end of the functional rod 26 abuts against the pressing plate 24.

[0059] A return spring is fixedly installed on the functional rod 26, and the other end of the return spring abuts against the top pressure plate 24. Through the setting of the return spring, the functional rod 26 can be kept in a state of being retracted inside the guide groove 25. When the top pressure rod 21 presses the top pressure plate 24, the top pressure plate 24 will slide toward the direction of the guide groove 25 and press the functional rod 26 at the same time. The return spring will deform to store elastic potential energy, so that the functional rod 26 extends from the auxiliary plate 9. At this time, the auxiliary plate 9 will also tilt under the push of the top pressure plate 24.

[0060] When the carrying frame 6 needs to be lifted, the take-up roller 4 is driven by the driving motor 3 to reel in the draw rope 5. Under the action of friction, the moving draw rope 5 will drive the rope guide roller 14 to rotate counterclockwise, and the fourth transmission gear 15 will also rotate counterclockwise. At this time, the fifth transmission gear 16 will rotate clockwise, and then the worm 18 and the worm wheel 19 are driven to rotate through the second transmission rod 17, so that the third transmission gear 22 rotates, and with the cooperation of the tooth plate 23, the pressing rod 21 is driven to slide inside the control block 7 toward the auxiliary plate 9, and press the auxiliary plate 9 to tilt the auxiliary plate 9. 24 will also push out the functional rod 26. At this time, when the carrying frame 6 is lifted, it will first press the functional rods 26 on both sides of the pull rope 5, so that the two rows of functional rods 26 slide toward both sides respectively and release the obstruction to the moving path of the carrying frame 6. When the carrying frame 6 slides out of the range of the functional rod 26, the pressing spring 27 releases the elastic potential energy, which can reset the functional rod 26. If the pull rope 5 breaks, the carrying frame 6 will slide downward along the outer wall of the inclined auxiliary plate 9. At this time, the functional rod 26 set below will block the falling carrying frame 6, effectively increasing the falling protection of the carrying frame 6.

[0061] In order to ensure stable lifting of the carrying frame 6, a counterweight block 31 is provided at one end of the working platform away from the carrying frame 6, so as to ensure the balance of the working platform when the carrying frame 6 is lifted.

[0062] When the carrying frame 6 is lowered, the carrying frame 6 slides down on the outer wall of the auxiliary plate 9 under the action of gravity, and at the same time, the pull rope 5 will be pulled to move. At this time, the rope guide roller 14 rotates clockwise under the action of friction, and drives the fifth transmission gear 16 to rotate counterclockwise through the fourth transmission gear 15, and drives the worm 18 and the worm wheel 19 to rotate through the second transmission rod 17, so that the third transmission gear 22 drives the pressing rod 21 to slide in the direction away from the auxiliary plate 9. At this time, the auxiliary plate 9 will be released from the tilted state and become vertical. At the same time, the pressing plate 24 will also release the pressure on the functional rod 26. At this time, the functional rod 26 will quickly reset under the action of the reset spring, retract into the inside of the guide groove 25, and press the pressing plate 24 back to its original position.

[0063] Working principle: When the driving motor 3 drives the take-up roller 4 to rotate, it will also drive the first transmission gear 10 to rotate, and the second transmission gear 11 meshing with it will also rotate at the same time. Therefore, when the take-up roller 4 is taking up and unwinding the rope 5, it will drive the reciprocating screw rod 12 to rotate, so that the rope control block 13 guides the rope 5, making the rope 5 more neat when winding or unwinding, reducing the uneven tension and pressure that causes the internal fiber structure of the rope 5 to change, resulting in a reduced service life of the rope 5, further improving the service life of the rope 5, and at the same time improving the safety when lifting goods.

[0064] When the supporting frame 6 needs to be lifted, the take-up roller 4 is driven by the driving motor 3 to reel in the pull rope 5. Under the action of friction, the moving pull rope 5 will drive the rope guide roller 14 to rotate counterclockwise, and the fourth transmission gear 15 will also rotate counterclockwise. At this time, the fifth transmission gear 16 will rotate clockwise, and then the worm 18 and the worm wheel 19 are driven by the second transmission rod 17 to rotate, so that the third transmission gear 22 rotates, and with the cooperation of the tooth plate 23, the pressing rod 21 is driven to slide in the direction of the auxiliary plate 9 inside the control block 7, and press the auxiliary plate 9 to tilt the auxiliary plate 9. At the same time, the pressing plate 24 will also push the functional rod 26 out. If the pull rope 5 breaks, the supporting frame 6 will slide downward along the outer wall of the inclined auxiliary plate 9. At this time, the functional rod 26 arranged below will block the falling supporting frame 6, effectively increasing the falling protection of the supporting frame 6.

[0065] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0067] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction lifting platform, characterized by: It comprises a steel pipe (2) and a bearing plate (1), wherein a plurality of the steel pipes (2) are provided, and the plurality of the steel pipes (2) are combined through clamps to form a portal scaffold; A mounting frame (8) is detachably mounted on the top of the supporting plate (1); a take-up roller (4) driven to rotate by a driving motor (3) is provided above the mounting frame (8); a pull rope (5) is fixedly connected to the take-up roller (4); and the other end of the pull rope (5) is fixedly connected to the supporting frame (6); A support rod (30) is fixedly mounted on the top of the mounting frame (8); a reciprocating screw rod (12) is rotatably mounted on the support rod (30); a rope control block (13) is slidably mounted on the reciprocating screw rod (12); and the pull rope (5) passes through the rope control block (13); A transmission assembly is arranged above the mounting frame (8) and is used for transmission between the take-up roller (4) and the reciprocating screw rod (12); A connecting rod (29) is detachably mounted on one side of the mounting frame (8), an auxiliary plate (9) is rotatably mounted on the other end of the connecting rod (29), a control block (7) is detachably mounted on the steel pipe (2), and a pressing rod (21) for pressing the auxiliary plate (9) is slidably mounted inside the control block (7); A third transmission gear (22) is rotatably mounted inside the control block (7), a first transmission rod (20) is provided at the top end of the third transmission gear (22), the other end of the first transmission rod (20) extends to the inside of the mounting frame (8), a toothed plate (23) is fixedly mounted on one end of the pressing rod (21) close to the third transmission gear (22), and the third transmission gear (22) is meshed with the toothed plate (23); A second transmission rod (17) is rotatably mounted inside the placement frame (8), a worm (18) is fixedly mounted on the outer wall of the second transmission rod (17), a worm wheel (19) is rotatably mounted inside the placement frame (8), the worm wheel (19) is meshed with the worm (18), and the bottom end of the worm wheel (19) is fixedly connected to the first transmission rod (20); A rope guide assembly is provided inside the placement frame (8) for controlling the rotation of the second transmission rod (17) by moving the pull rope (5); The auxiliary plate (9) is provided with a guide groove (25), the guide groove (25) is arranged to be inclined upward, and a plurality of guide grooves (25) are provided, and the plurality of guide grooves (25) are symmetrically arranged in two rows on both sides of the pull rope (5), and a functional rod (26) is elastically installed inside the plurality of guide grooves (25); a top pressure spring (27) is fixedly installed inside the guide groove (25), and the other end of the top pressure spring (27) is in contact with the functional rod (26); a top pressure plate (24) for pressing the functional rod (26) is slidably installed at one end of the auxiliary plate (9) close to the top pressure rod (21), and a receiving groove (28) for the top pressure plate (24) to slide is provided inside the auxiliary plate (9), and the receiving groove (28) is communicated with the guide groove (25), and one end of the functional rod (26) is in contact with the top pressure plate (24); a return spring is fixedly installed on the functional rod (26); When the pressing rod (21) presses the pressing plate (24), the pressing plate (24) can slide in the direction of the guide groove (25) and press the functional rod (26), so that the return spring is deformed and the functional rod (26) extends from the auxiliary plate (9), so that the auxiliary plate (9) is tilted under the push of the pressing plate (24), so that the supporting frame (6) slides downward along the outer wall of the tilted auxiliary plate (9), and the functional rod (26) can block the falling supporting frame (6) so that the supporting frame (6) is protected from falling.

2. A construction lifting platform according to claim 1, characterized in that: The transmission assembly comprises a first transmission gear (10) and a second transmission gear (11), wherein the first transmission gear (10) is fixedly mounted on one side of the take-up roller (4), and the second transmission gear (11) is rotatably mounted on the side wall of the support rod (30), and the first transmission gear (10) is meshed with the second transmission gear (11).

3. The construction lifting platform according to claim 2, characterized in that: The rope guide assembly includes a rope guide roller (14), a fourth transmission gear (15) and a fifth transmission gear (16). The rope guide roller (14) is rotatably mounted on the top of the auxiliary plate (9), the pull rope (5) is laid on the outer wall of the rope guide roller (14), the fourth transmission gear (15) is fixedly mounted on the outer wall of the rope guide roller (14), and the outer wall of the second transmission rod (17) is fixedly mounted with a fifth transmission gear (16), and the fifth transmission gear (16) is meshed with the fourth transmission gear (15).

4. The construction hoisting platform according to claim 3, characterized in that: The fifth transmission gear (16) is configured as a sector gear.

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