Construction lifting platform convenient to transport on construction site

Abstract

The utility model discloses a construction lifting platform convenient for construction site transportation, which comprises a mounting frame, a lifting device is mounted on the mounting frame, the lifting device comprises a lead screw, a moving block and a base, the moving block is connected with the lead screw through threads, the base is mounted on the mounting frame, and one end of the lead screw is connected with a protective device. The protection device comprises a protection sleeve, a control sleeve, a protection rod, a protection groove, a limiting groove, a protection frame, an ejector block, an ejector spring and a push block, the protection groove is formed in the outer side of the protection rod, the limiting groove is formed in the inner side of the protection sleeve, the ejector spring is connected with the ejector block and the push block, the push block is arranged on one side of the protection frame, and a reinforcing mechanism is arranged on the outer side of the protection sleeve. The reinforcing mechanism comprises a movable block, a partition plate, a longitudinal plate, a reinforcing sleeve, a movable plate, a movable rod, a movable groove, a fixed block and a fixed hole, the movable rod is connected to one side of the movable block, the fixed hole is formed in the fixed block, and the problems of a traditional device in the aspects of the driving mode, the protection mechanism and the structural stability are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to construction hoist platform technical field, more specifically, it relates to a construction hoist platform convenient for construction site transportation. BACKGROUND

[0002] In the field of building construction, the construction hoist platform as the key equipment of the on-site material transportation, its lifting precision, safety protection and structural stability directly affect the construction efficiency and operation safety, however, the construction hoist platform on the current market still has many technical defects in practical application, these problems not only affect the equipment performance, but also can cause safety hazards.

[0003] The primary problem is that the driving mode is unreasonable, the construction hoist platform in the prior art has significant defects: first, the hydraulic cylinder driving mode is generally adopted, and the control precision is low; second, the hydraulic system is high in cost, which increases the equipment investment; third, the hydraulic system maintenance is complex, and professional personnel are needed for regular maintenance; in addition, the hydraulic oil leakage not only pollutes the environment, but also can cause safety hazards, the deficiency of this design not only affects the use effect of the lifting platform, but also can cause unstable material transportation due to insufficient precision, which increases the construction cost and safety risk.

[0004] More prominent is that the protection mechanism is imperfect, although the improved equipment of part adopts the shearing type lifting structure of motor driven screw rod, but there are obvious problems: first, there is no effective limit protection, which is easy to cause motor overload; second, the protection device threshold is fixed, and it cannot adapt to different load requirements, the design of fixed threshold not only limits the application range of the equipment, but also can cause safety accidents due to improper use, the deficiency of this design not only reduces the service life of the equipment, but also can cause personnel injury due to improper protection, which increases the construction safety hazard.

[0005] The most critical is that the structural stability is insufficient, although the adjustable protection threshold function of part of the equipment is realized, but there are serious problems: first, the adjusting mechanism is simple in design, and the vibration generated by the motor operation is easy to cause the structure to loosen, and the bumping of the equipment during transportation will cause the displacement of the parts, the loosening and displacement of the structure not only affect the accuracy of the protection threshold, but also can cause the failure of the whole protection system, the deficiency of this design not only affects the reliability of the equipment, but also can cause mis-triggering or failure due to threshold deviation, which increases the safety risk of the construction site. INVENTION CONTENTS

[0006] (I) technical problems solved

[0007] In view of the problems existing in the prior art, the utility model provides a construction hoist platform convenient for construction site transportation to solve the technical problems mentioned in the background art.

[0008] (II) technical scheme

[0009] In order to achieve the above object, the utility model provides following technical scheme: a construction lifting platform convenient for construction site transportation, installation frame is installed with lifting device on the installation frame, the lifting device includes lead screw, moving block and base, the lead screw is rotatably installed in the inside of base, the moving block is rotably connected with the lead screw through the screw, the base is installed on the installation frame, one end of the lead screw is connected with the protection device, the protection device includes protective sleeve, control sleeve, protection rod, protection groove, limiting groove, protection frame, top block, top spring and push block, the control sleeve is rotatably installed on the outside of protective sleeve, the protection rod is fixedly connected with one end of the lead screw, the protection groove is set up on the outside of protection rod, the limiting groove is set up on the inside of protective sleeve, one end of the protection frame is inserted into the protection groove, the top block is rotably installed in the limiting groove, the top spring is connected with the top block and push block on both ends, the push block is rotably arranged on one side of the protection frame, the outside of protective sleeve is provided with reinforcing mechanism, the reinforcing mechanism includes movable block, baffle, vertical plate, reinforcing sleeve, movable plate, movable rod, movable groove, fixed block and fixed hole, the movable block is fixedly installed on one side of movable plate, the baffle is fixedly connected on one side of reinforcing sleeve through the vertical plate, the reinforcing sleeve is arranged on the outside of protective sleeve, the movable plate is rotatably installed on the outside of protective sleeve, the movable rod is fixedly connected on one side of movable block, the movable groove is set up on the movable plate, the fixed block is fixedly installed on the outside of protective sleeve, the fixed hole is set up in the fixed block.

[0010] The utility model further sets up, the platform is equipped with first connecting plate and second connecting plate on the outside, the platform and base both sides are equipped with moving groove, the inside of platform and base is equipped with moving rod, one moving rod is fixedly connected on the outside of moving block, and the both ends of moving rod are inserted into the moving groove which is set up on both sides of base, the both ends of another moving rod pass through the sliding slot which is set up on both sides of platform, one end of first connecting plate is rotably connected with moving rod, the other end of first connecting plate is rotably connected with base, one end of second connecting plate is rotably connected with platform, the other end of second connecting plate is rotably connected with the moving rod which is set up on the outside of moving block.

[0011] The utility model further sets up, the both ends of moving rod rotatably are equipped with gyro wheel, the gyro wheel is rotably arranged in moving groove, the bottom end of installation frame is detachably equipped with moving wheel, one side of installation frame is detachably equipped with handle, the installation frame is detachably equipped with speed reducer and motor, the input end of speed reducer is connected with the output end of motor, the output end of speed reducer is connected with one end of protective sleeve.

[0012] The utility model further sets up, the movable plate is rotably arranged in movable groove.

[0013] The utility model further provides for, movable board one side detachably equipped with the thrust bearing, thrust bearing one side is equipped with the support spring, support spring other end is connected with the reinforcing sleeve.

[0014] The utility model further provides for, the inside of reinforcing sleeve is equipped with a plurality of sliding blocks, the outside of protection cover is equipped with a plurality of sliding slots, the sliding block is in sliding groove, and sliding block and sliding groove realize the orientation and spacing of reinforcing sleeve.

[0015] The utility model further provides for, the outside of protection cover is equipped with the adjusting sleeve, the outer wall of adjusting sleeve is connected with the inner wall of control cover through thread and moves, and the side wall of protection cover is equipped with adjusting groove, and the adjusting block is slidably arranged in adjusting groove, and the inner wall of adjusting sleeve is fixedly connected with the top block through the adjusting block, and the above-mentioned parts ensure accurate adjustment function.

[0016] The utility model further provides for, the outside of protection cover is equipped with a plurality of reinforcing grooves, and the side wall of control cover is slidably provided with a plurality of reinforcing rods, and the outside of control cover is provided with a plurality of return springs, and one end of reinforcing rod is connected with the outer wall of control cover through return spring, and the other end of reinforcing rod is inserted into the corresponding reinforcing groove, and the setting of the above-mentioned parts can realize the accurate locking of control cover.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the utility model provides a construction lifting platform convenient for transportation at construction site, has the following beneficial effects:

[0019] 1, lifting device passes through the precise cooperation of lead screw, moving block, base, platform, connecting plate and moving rod, constructs a set of efficient lifting system, and the threaded connection of lead screw and moving block provides stable transmission, and the sliding cooperation of moving rod and moving groove realizes stable lifting, and the rotary design of connecting plate ensures that the structure of shear type lifting realizes accurate control by the cooperation of motor and speed reducer, provides stable guidance by the cooperation of roller and moving groove, and ensures lifting stability by the shearing mechanism of connecting plate, effectively solves the problems of low precision and high cost of traditional hydraulic drive, realizes accurate lifting of material, and improves transportation efficiency.

[0020] 2, protection device passes through the cooperative work of protection cover, control cover, protection rod, protection groove, limit groove, protection frame, top block, top spring and push block, forms a protection system, and the cooperation of protection rod and protection groove provides rotary limit, and the design of top block and top spring realizes adjustable triggering, and the cooperation of push block and protection frame ensures timely response, and the structure not only realizes overload protection by the cooperation of protection frame and protection groove, but also provides adjustable threshold by the design of top spring and push block, effectively solves the problem of imperfect protection mechanism of traditional device, prevents motor overload damage, and ensures equipment safety.

[0021] 3、The reinforcing mechanism is a reliable locking system constructed by the precise cooperation of the movable block, the partition plate, the vertical plate, the reinforcing sleeve, the movable plate, the movable rod, the movable slot, the fixed block, the adjusting sleeve, the adjusting block, the reinforcing rod and the reset spring. The cooperation of the partition plate and the vertical plate realizes position locking, and the design of the reinforcing sleeve and the sliding block ensures stable movement. This structure not only realizes automatic reset through the elastic design of the movable spring and the supporting spring, but also provides reliable locking through the cooperation of the reinforcing rod and the reinforcing slot, and ensures structure reset through the setting of the reset spring, effectively solves the problem of insufficient structural stability of the traditional device, prevents loosening displacement caused by vibration, and ensures the stability of threshold adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the construction lifting platform convenient for transportation on a construction site in the utility model;

[0023] Figure 2 It is a structure schematic view of the part without the moving wheel in the utility model;

[0024] Figure 3 It is a structure schematic view of the part of the protective device and the reinforcing mechanism in the utility model;

[0025] Figure 4 It is a sectional structure schematic view of the part of the protective device and the reinforcing mechanism in the utility model;

[0026] Figure 5 It is a sectional structure schematic view of the part of the protective rod, the adjusting sleeve and the control sleeve in the utility model.

[0027] In the drawing: 1, mounting frame; 2, lead screw; 3, moving block; 4, base; 5, protective sleeve; 6, control sleeve; 7, protective rod; 8, protective slot; 9, limiting slot; 10, protective frame; 11, top block; 12, top spring; 13, push block; 14, movable block; 15, partition plate; 16, vertical plate; 17, reinforcing sleeve; 18, movable plate; 19, movable rod; 20, movable slot; 21, fixed block; 22, fixed hole; 23, platform; 24, first connecting plate; 25, second connecting plate; 26, moving slot; 27, moving rod; 28, roller; 29, moving wheel; 30, handle; 31, speed reducer; 32, motor; 33, movable spring; 34, thrust bearing; 35, supporting spring; 36, sliding block; 37, sliding slot; 38, adjusting sleeve; 39, adjusting slot; 40, adjusting block; 41, reinforcing slot; 42, reinforcing rod; 43, reset spring. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0030] In the present application, unless otherwise specified, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0031] Please refer to Figures 1-5 A construction lifting platform convenient for transportation at construction site, comprising a mounting frame 1, a lifting device is installed on the mounting frame 1, the lifting device comprises a lead screw 2, a moving block 3 and a base 4, the lead screw 2 is rotatably installed on the inner side of the base 4, the moving block 3 is movably connected with the lead screw 2 through threads, the base 4 is installed on the mounting frame 1, one end of the lead screw 2 is connected with a protection device, the protection device comprises a protective sleeve 5, a control sleeve 6, a protection rod 7, a protection groove 8, a limiting groove 9, a protection frame 10, a top block 11, a top spring 12 and a push block 13, the control sleeve 6 is rotatably installed on the outer side of the protective sleeve 5, the protection rod 7 is fixedly connected with one end of the lead screw 2, the protection groove 8 is formed on the outer side of the protection rod 7, the limiting groove 9 is formed on the inner side of the protective sleeve 5, one end of the protection frame 10 is inserted into the protection groove 8, the top block 11 is movably installed in the limiting groove 9, the top spring 12 is connected with the top block 11 and the push block 13 at both ends, the push block 13 is movably arranged on one side of the protection frame 10, a reinforcing mechanism is arranged on the outer side of the protective sleeve 5, the reinforcing mechanism comprises a movable block 14, a partition plate 15, a longitudinal plate 16, a reinforcing sleeve 17, a movable plate 18, a movable rod 19, a movable groove 20, a fixed block 21 and a fixed hole 22, the movable block 14 is fixedly installed on one side of the movable plate 18, the three partition plates 15 are fixedly connected with one side of the reinforcing sleeve 17 through the longitudinal plate 16, the reinforcing sleeve 17 is arranged on the outer side of the protective sleeve 5, the movable plate 18 is rotatably installed on the outer side of the protective sleeve 5, the movable rod 19 is fixedly connected with one side of the movable block 14, the movable groove 20 is formed on the movable plate 18, the fixed block 21 is fixedly installed on the outer side of the protective sleeve 5, and the fixed hole 22 is formed in the fixed block 21.

[0032] The platform 23 is arranged above the base 4, the first connecting plate 24 and the second connecting plate 25 are arranged outside the platform 23, the moving grooves 26 are arranged on both sides of the platform 23 and the base 4, the moving rods 27 are arranged inside the platform 23 and the base 4, one of the moving rods 27 is fixedly connected to the outside of the moving block 3, and the two ends of the moving rod 27 are penetrated into the moving grooves 26 arranged on both sides of the base 4, the other moving rod 27 is penetrated through the sliding grooves 37 arranged on both sides of the platform 23, one end of the first connecting plate 24 is rotationally connected to the moving rod 27, the other end of the first connecting plate 24 is rotationally connected to the base 4, one end of the second connecting plate 25 is rotationally connected to the platform 23, and the other end of the second connecting plate 25 is rotationally connected to the moving rod 27 arranged outside the moving block 3.

[0033] The rolling wheels 28 are rotationally arranged at the two ends of the moving rod 27, the rolling wheels 28 are movably arranged in the moving grooves 26, the moving wheels 29 are detachably arranged at the bottom end of the mounting frame 1, the handle 30 is detachably arranged on one side of the mounting frame 1, the speed reducer 31 and the motor 32 are detachably arranged on the mounting frame 1, the input end of the speed reducer 31 is connected to the output end of the motor 32, and the output end of the speed reducer 31 is connected to one end of the protective sleeve 5.

[0034] In this embodiment, when the device needs to be used, first adjust the trigger threshold of the protective device according to the weight of the material, place the material on the platform 23, then pull the mounting frame 1 through the handle 30, so that the mounting frame 1 drives the overall device and the material placed on the platform 23 to move through the moving wheels 29 arranged at the bottom, stop the moving device after moving to the appropriate position, turn on the motor 32, the output end of the motor 32 drives the protective sleeve 5 to rotate after the speed reduction of the reducer 31, then the protective sleeve 5 drives the limiting groove 9 opened on the inner side to rotate, then the protective frame 10 and the protective groove 8 are matched to drive the protective rod 7 to rotate, thereby driving the lead screw 2 to rotate forward, then the moving block 3 drives the moving rods 27 on both sides to slide along the lead screw 2, and the moving rods 27 connected by the first connecting plate 24 and the second connecting plate 25 drive the rollers 28 arranged at both ends to move along the two moving grooves 26 respectively, then the first connecting plate 24 and the second connecting plate 25 are rotationally connected through the shaft at the center, then the first connecting plate 24 and the second connecting plate 25 will cooperate to lift the platform 23, thereby lifting the material, when moving to the highest position, the moving block 3 cannot continue to move, so that the lead screw 2 cannot rotate, thereby the protective rod 7 drives the protective groove 8 not to rotate, then the end of the protective frame 10 is extruded at the inner wall edge of the protective groove 8, then the protective frame 10 slides out from one end of the protective groove 8, and the end of the protective frame 10 in the limiting groove 9 extrudes the push block 13, then the push block 13 slides to one side along the limiting groove 9, and the push block 13 cooperates with the top block 11 to extrude the top spring 12, so that the motor 32 drives the protective sleeve 5 and other components to idle through the reducer 31, effectively preventing the overload damage of the motor 32, then the staff can have sufficient time to shut down the motor 32, when the platform 23 needs to be lowered, the motor 32 is driven in reverse to reverse the motor 32.

[0035] Please refer to Figures 3-5 , as a further embodiment of the whole device: the movable rod 19 is movably sleeved with a movable spring 33.

[0036] The movable plate 18 is detachably provided with a thrust bearing 34 on one side, and the thrust bearing 34 is connected with a supporting spring 35 on one side, and the other end of the supporting spring 35 is connected with the reinforcing sleeve 17.

[0037] A plurality of sliding blocks 36 are fixedly arranged in the reinforcing sleeve 17, and a plurality of sliding grooves 37 are formed in the outer side of the protective sleeve 5, and the sliding blocks 36 slide in the sliding grooves 37.

[0038] The protective sleeve 5 is provided with an adjusting sleeve 38 on the outer side, the outer wall of the adjusting sleeve 38 is movably connected with the inner wall of the control sleeve 6 through threads, the side wall of the protective sleeve 5 is provided with an adjusting groove 39, the adjusting groove 39 is slidably provided with an adjusting block 40, and the inner wall of the adjusting sleeve 38 is fixedly connected with the top block 11 through the adjusting block 40.

[0039] A plurality of reinforcing grooves 41 are formed on the outer side of the protective sleeve 5, and a plurality of reinforcing rods 42 are slidably arranged on the side wall of the control sleeve 6. A plurality of return springs 43 are arranged on the outer side of the control sleeve 6. One end of each reinforcing rod 42 is connected to the outer wall of the control sleeve 6 through a return spring 43, and the other end of each reinforcing rod 42 is inserted into a corresponding reinforcing groove 41.

[0040] More specifically, when the trigger threshold of the protective device needs to be adjusted, firstly, the movable plate 18 is rotated forward. The movable plate 18 drives the thrust bearing 34 installed on one side and the movable block 14 installed on the other side to rotate. Then, the movable block 14 drives the movable rod 19 to move along the fixed hole 22, and the movable block 14 and the fixed block 21 cooperate to compress the movable spring 33. At the same time, the top plate will drive multiple movable slots 20 to move. When the movable spring 33 is compressed to its limit, the rotation of the movable plate 18 is stopped. Then, the reinforcing sleeve 17 is pushed. The reinforcing sleeve 17 drives the slider 36 to slide along the slide groove 37, and the reinforcing sleeve 17 and the thrust bearing 34 cooperate to compress the support spring 35. At the same time, the reinforcing sleeve 17 drives the three partitions 15 to slide through the longitudinal plate 16. When the support spring 35 is compressed to its limit, the maximum A partition 15 near the reinforcing sleeve 17 passes through the movable groove 20 and moves to the other side of the movable plate 18. Then the movable plate 18 is released, and the movable spring 33 pushes the movable block 14 to rotate and reset. Then the movable block 14 drives the movable rod 19 and the movable plate 18 to rotate and reset. Then the movable plate 18 drives the movable groove 20 to rotate and reset to a position that does not correspond to the partition 15. Then the longitudinal plate 16 and the partition 15 cooperate to limit the reinforcing sleeve 17 to one side of the movable plate 18. Then the reinforcing sleeve 17 no longer limits the reinforcing rod 42. Then the control sleeve 6 is rotated in the forward direction. The control sleeve 6 drives the multiple reinforcing rods 42 opened on the side wall to move. Then the inner wall of the reinforcing groove 41 presses against one end of the reinforcing rod 42. Then one end of the reinforcing rod 42 slides out of the reinforcing groove 41, and the other end of the reinforcing rod 42... The return spring 43 is stretched. Simultaneously, due to the threaded connection between the inner wall of the control sleeve 6 and the outer wall of the adjusting sleeve 38, and the limiting effect of the adjusting block 40 and the adjusting groove 39 on the adjusting sleeve 38, the adjusting sleeve 38 cannot rotate. Then, the adjusting sleeve 38 drives the adjusting block 40 to slide along the adjusting groove 39, causing the adjusting sleeve 38 to move the top block 11 via the adjusting block 40. The distance between the top block 11 and the push block 13 then shortens, causing them to press against the top spring 12. This increases the thrust exerted by the top spring 12 on the push block 13, making the protective device less likely to be triggered. To adjust to a more easily triggered state, simply rotate the control sleeve 6 in the opposite direction. Once adjusted appropriately, stop rotating the control sleeve 6, and the return spring 43... 3. The reinforcing rod 42 is slidably inserted into the corresponding reinforcing groove 41. Then, the movable plate 18 is rotated forward again. The movable plate 18 then drives the thrust bearing 34 and the movable block 14 to rotate again. The movable block 14 then drives the movable rod 19 to move along the fixed hole 22. The movable block 14 and the fixed block 21 cooperate again to press the movable spring 33. At the same time, the movable plate 18 drives the movable groove 20 to rotate again. When the movable groove 20 moves to the position corresponding to the partition 15 again, the support spring 35 pushes the reinforcing sleeve 17 to slide and reset along the slider 36 and the slide groove 37. Then, the reinforcing sleeve 17 drives the longitudinal plate 16 and the three partitions 15 to slide and reset. After the support spring 35 is fully reset, the other two partitions 15 are on both sides of the movable plate 18. Then, the movable plate 18 is released.The movable spring 33 pushes the movable block 14 to rotate and reset, then the movable block 14 drives the movable rod 19 to reset. The movable block 14 then drives the movable groove 20 to rotate and reset to a position not corresponding to the partition 15 via the movable plate 18. Then, the longitudinal plate 16 and the corresponding two partitions 15 cooperate to limit the reinforcing sleeve 17 to one side of the movable plate 18, thereby re-limiting the inner wall of the reinforcing sleeve 17 to the outer end of the reinforcing rod 42. Then, the reinforcing rod 42 and the reinforcing groove 41 cooperate to lock the control sleeve 6, preventing it from moving, thus ensuring the structural stability after threshold adjustment and ensuring stable operation of the equipment.

[0041] In summary, when using or operating the overall equipment: When the equipment needs to be used, first adjust the trigger threshold of the protective device according to the weight of the material, place the material on the platform 23, and then pull the mounting frame 1 by the handle 30. The mounting frame 1 will move the overall equipment and the material placed on the platform 23 through the moving wheels 29 set at the bottom. After moving to the appropriate position, stop the moving equipment, turn on the motor 32, and the output end of the motor 32 will drive the protective sleeve 5 to rotate after being reduced by the reducer 31. Then the protective sleeve 5 will drive the inner limit groove 9 to rotate. Then, through the cooperation of the protective frame 10 and the protective groove 8, the protective rod 7 will rotate, thereby driving the screw 2 to rotate in the forward direction. Then the moving block 3 will drive the moving rods 27 on both sides to slide along the screw 2, and the moving rods 27 connected by the first connecting plate 24 and the second connecting plate 25 will drive the rollers 28 set at both ends to move along the two moving grooves 26 respectively. Then, due to the first connecting plate 24, the moving rods 27 will move along the two moving grooves 26 respectively. 4. The center of the second connecting plate 25 is rotatably connected by a pivot. Then, the first connecting plate 24 and the second connecting plate 25 work together to support the platform 23, thereby raising the material. When it moves to the highest position, the moving block 3 can no longer move, so the screw 2 cannot rotate. This prevents the guard rod 7 from rotating the guard groove 8. Then, the inner edge of the guard groove 8 presses against the end of the guard frame 10. Then, one end of the guard frame 10 slides out of the guard groove 8, and the end of the guard frame 10 in the limit groove 9 presses against the push block 13. Then, the push block 13 slides to one side along the limit groove 9. The push block 13 and the top block 11 work together to press against the top spring 12, so that the motor 32 drives the protective sleeve 5 and other components to run idle through the reducer 31. This effectively prevents the motor 32 from being overloaded and damaged. Then, the staff has enough time to shut down the motor 32. When it is necessary to lower the platform 23, the motor 32 is reversed to reverse the direction of rotation.

[0042] When the trigger threshold of the protective device needs to be adjusted, first rotate the movable plate 18 in the forward direction. The movable plate 18 drives the thrust bearing 34 installed on one side and the movable block 14 installed on the other side to rotate. Then, the movable block 14 drives the movable rod 19 to move along the fixed hole 22. The movable block 14 and the fixed block 21 cooperate to compress the movable spring 33. At the same time, the top plate will drive multiple movable slots 20 to move. When the movable spring 33 is compressed to its limit, stop rotating the movable plate 18. Then push the reinforcing sleeve 17. The reinforcing sleeve 17 drives the slider 36 to slide along the slide groove 37. The reinforcing sleeve 17 and the thrust bearing 34 cooperate to compress the support spring 35. At the same time, the reinforcing sleeve 17 drives the three partitions 15 to slide through the longitudinal plate 16. When the support spring 35 is compressed to its limit, the closest to the reinforcing sleeve 17 will be compressed to its limit. One of the partitions 15 of sleeve 17 passes through the movable groove 20 and moves to the other side of the movable plate 18. Then the movable plate 18 is released, and the movable spring 33 pushes the movable block 14 to rotate and reset. Then the movable block 14 drives the movable rod 19 and the movable plate 18 to rotate and reset. Then the movable plate 18 drives the movable groove 20 to rotate and reset to a position that does not correspond to the partition 15. Then the longitudinal plate 16 and the partition 15 cooperate to limit the reinforcing sleeve 17 to one side of the movable plate 18. Then the reinforcing sleeve 17 no longer limits the reinforcing rod 42. Then the control sleeve 6 is rotated in the forward direction. The control sleeve 6 drives the multiple reinforcing rods 42 opened on the side wall to move. Then the inner wall of the reinforcing groove 41 presses against one end of the reinforcing rod 42. Then one end of the reinforcing rod 42 slides out of the reinforcing groove 41, and the other end of the reinforcing rod 42 drives... The return spring 43 is stretched. Simultaneously, due to the threaded connection between the inner wall of the control sleeve 6 and the outer wall of the adjusting sleeve 38, and the limiting effect of the adjusting block 40 and the adjusting groove 39 on the adjusting sleeve 38, the adjusting sleeve 38 cannot rotate. Then, the adjusting sleeve 38 drives the adjusting block 40 to slide along the adjusting groove 39, causing the adjusting sleeve 38 to move the top block 11 via the adjusting block 40. The distance between the top block 11 and the push block 13 then shortens, causing them to press against the top spring 12. This increases the thrust exerted by the top spring 12 on the push block 13, making the protective device less likely to be triggered. To adjust to a more easily triggered state, simply rotate the control sleeve 6 in the opposite direction. Once adjusted appropriately, stop rotating the control sleeve 6, and the return spring 43... The reinforcing rod 42 is slidably inserted into the corresponding reinforcing groove 41. Then, the movable plate 18 is rotated forward again. The movable plate 18 then drives the thrust bearing 34 and the movable block 14 to rotate again. The movable block 14 then drives the movable rod 19 to move along the fixed hole 22. The movable block 14 and the fixed block 21 cooperate again to press the movable spring 33. At the same time, the movable plate 18 drives the movable groove 20 to rotate again. When the movable groove 20 moves to the position corresponding to the partition 15 again, the support spring 35 pushes the reinforcing sleeve 17 to slide back to its original position along the slider 36 and the slide groove 37. Then, the reinforcing sleeve 17 drives the longitudinal plate 16 and the three partitions 15 to slide back to their original positions. After the support spring 35 is fully reset, the other two partitions 15 are located on both sides of the movable plate 18. Then, the movable plate 18 is released.The movable spring 33 pushes the movable block 14 to rotate and reset, then the movable block 14 drives the movable rod 19 to reset. The movable block 14 then drives the movable groove 20 to rotate and reset to a position not corresponding to the partition 15 via the movable plate 18. Then, the longitudinal plate 16 and the corresponding two partitions 15 cooperate to limit the reinforcing sleeve 17 to one side of the movable plate 18, thereby re-limiting the inner wall of the reinforcing sleeve 17 to the outer end of the reinforcing rod 42. Then, the reinforcing rod 42 and the reinforcing groove 41 cooperate to lock the control sleeve 6, preventing it from moving, thus ensuring the structural stability after threshold adjustment and ensuring stable operation of the equipment.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A construction lifting platform that facilitates transportation on construction sites, comprising a mounting frame (1), characterized in that: A lifting device is installed on the mounting frame (1). The lifting device includes a lead screw (2), a moving block (3), and a base (4). The moving block (3) is connected to the lead screw (2) by a thread. The base (4) is installed on the mounting frame (1). One end of the lead screw (2) is connected to a protective device. The protective device includes a protective sleeve (5), a control sleeve (6), a protective rod (7), a protective groove (8), a limiting groove (9), a protective frame (10), a top block (11), a top spring (12), and a push block (13). The protective groove (8) is opened on the outside of the protective rod (7), and the limiting groove (9) is opened on the inside of the protective sleeve (5). The top spring (12) is connected to the top block (11). 1) Connected to push block (13), push block (13) is set on one side of protective frame (10), and a reinforcement mechanism is set on the outside of protective sleeve (5). The reinforcement mechanism includes movable block (14), partition (15), longitudinal plate (16), reinforcement sleeve (17), movable plate (18), movable rod (19), movable groove (20), fixed block (21) and fixed hole (22). The three partitions (15) are connected to one side of reinforcement sleeve (17) through longitudinal plate (16), movable rod (19) is connected to one side of movable block (14), movable groove (20) is opened on movable plate (18), and fixed hole (22) is opened in fixed block (21).

2. The construction lifting platform for convenient transportation on construction sites according to claim 1, characterized in that: A platform (23) is provided above the base (4). A first connecting plate (24) and a second connecting plate (25) are provided on the outer side of the platform (23). Movable grooves (26) are provided on both sides of the platform (23) and the base (4). Movable rods (27) are provided on the inner side of the platform (23) and the base (4). One of the movable rods (27) is fixedly connected to the outer side of the movable block (3), and both ends of the movable rod (27) are inserted into the movable grooves (26) on both sides of the base (4). The other movable rod (27) passes through the sliding grooves (37) on both sides of the platform (23). One end of the first connecting plate (24) is rotatably connected to the movable rod (27), and the other end of the first connecting plate (24) is rotatably connected to the base (4). One end of the second connecting plate (25) is rotatably connected to the platform (23), and the other end of the second connecting plate (25) is rotatably connected to the movable rod (27) provided on the outer side of the movable block (3).

3. The construction lifting platform for convenient transportation on construction sites according to claim 2, characterized in that: The moving rod (27) has rollers (28) at both ends that rotate. The rollers (28) are movable in the moving groove (26). The bottom of the mounting frame (1) is detachably provided with a moving wheel (29). The mounting frame (1) is detachably provided with a handle (30) on one side. The mounting frame (1) is detachably provided with a reducer (31) and a motor (32). The input end of the reducer (31) is connected to the output end of the motor (32). The output end of the reducer (31) is connected to one end of the protective sleeve (5).

4. A construction lifting platform for convenient transportation on construction sites according to any one of claims 1-3, characterized in that: A movable spring (33) is movably sleeved on the outside of the movable rod (19).

5. A construction lifting platform for convenient transportation on construction sites according to claim 4, characterized in that: A thrust bearing (34) is detachably provided on one side of the movable plate (18), and a support spring (35) is connected to one side of the thrust bearing (34). The other end of the support spring (35) is connected to the reinforcing sleeve (17).

6. A construction lifting platform for convenient transportation on construction sites according to claim 5, characterized in that: The inner side of the reinforcing sleeve (17) is provided with multiple sliders (36), and the outer side of the protective sleeve (5) is provided with multiple grooves (37), and the sliders (36) slide in the grooves (37).

7. A construction lifting platform for convenient transportation on construction sites according to claim 1, characterized in that: The protective sleeve (5) is provided with an adjustment sleeve (38) on the outside. The outer wall of the adjustment sleeve (38) is movably connected to the inner wall of the control sleeve (6) by threads. The side wall of the protective sleeve (5) is provided with an adjustment groove (39). An adjustment block (40) is slidably provided in the adjustment groove (39). The inner wall of the adjustment sleeve (38) is fixedly connected to the top block (11) through the adjustment block (40).

8. A construction lifting platform for convenient transportation on construction sites according to claim 6, characterized in that: The protective sleeve (5) has multiple reinforcing grooves (41) on its outer side. The control sleeve (6) has multiple reinforcing rods (42) that slide on its side wall. The control sleeve (6) has multiple return springs (43) on its outer side. One end of the reinforcing rod (42) is connected to the outer wall of the control sleeve (6) through the return spring (43), and the other end of the reinforcing rod (42) is inserted into the corresponding reinforcing groove (41).

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