Lifting device for building construction

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a lifting device for building construction. Comprising a lifting frame and a transmission assembly, one side of the lifting frame is fixedly connected with a frame with the upper portion and the lower portion being of an open structure, a positioning block capable of turning over automatically is arranged in the frame, a cart enters from the bottom of the frame, and the positioning block supports and fixes the bottom face of the cart after turning over reversely; a self-adaptive clamping mechanism is arranged on the inner side of the frame and comprises a bidirectional screw rod, a long rod, a movable seat, a clamping arm and a movable arm; through the cooperation of the clamping arm, the movable arm and the movable seat, the clamping arm can be automatically adjusted according to the shape of a clamped cargo, the dynamic adjustment ensures that the clamping arm can tightly and uniformly clamp the cargo, the stability in the lifting process is improved, the risk that the cargo falls off in the lifting process is reduced, and the working efficiency is improved. And a safer working environment is provided for constructors.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction and relates to a lifting device used in building construction. Background Art

[0002] In the process of construction, vertical transportation of materials is a vital link, especially in the construction of high-rise buildings. How to efficiently and safely transport materials from the ground to the high working surface has always been the focus of attention in the construction industry. Traditional material lifting methods, such as manual handling or simple lifting equipment, are not only inefficient, but also have great safety hazards. There are still some problems with the use of mechanical construction lifting devices. On the one hand, some lifting devices have complex structures and high installation and maintenance costs, which are not conducive to widespread application on construction sites; on the other hand, some lifting devices have limited carrying capacity and stability, which makes it difficult to meet the high requirements of high-rise building construction for material lifting.

[0003] Therefore, it is necessary to provide a new lifting device for building construction to solve the above technical problems. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a lifting device for building construction. The present invention is achieved through the following technical solutions: The lifting device according to claim 1, wherein the lifting frame is fixedly connected to a frame on one side of the lifting frame, and the frame is an open structure at the top and the bottom. A load-bearing rod and a stopper rod are arranged inside the frame, and the load-bearing rod and the stopper rod are symmetrically fixedly connected to both sides of the frame. A positioning block is equidistantly connected to the outer side of the load-bearing rod, and the top of one end of the positioning block is in contact with the bottom surface of the stopper rod. The other end of the positioning block is suspended, and a raised semicircular block is arranged at the top of the positioning block near the suspended end, so that the center of gravity of the positioning block is biased toward the suspended end. The frame is lowered by the lifting frame, and a trolley enters from the bottom of the frame. The bottom of the trolley pushes the positioning block to flip, providing an entry space for the flat plate of the trolley. When the bottom of the trolley completely enters the frame, the suspended end of the positioning block flips in the opposite direction under the action of gravity, so that the upper surface of the end of the positioning block close to the stopper rod is in contact with the bottom of the stopper rod, and the bottom surface of the trolley is supported and fixed by the positioning block.

[0005] An adaptive clamping mechanism is arranged on the inner side of the frame, and the adaptive clamping mechanism comprises a bidirectional screw, a long rod, a movable seat, a clamping arm and a movable arm; a plurality of support columns are fixedly connected inside one side of the lifting frame, and a connecting plate is symmetrically and slidingly connected to the outside of the support column, a U-shaped plate is symmetrically arranged inside the frame, and the connecting plate is fixedly connected to the corresponding U-shaped plate, a bidirectional screw is rotatably connected inside one side of the lifting frame, a threaded barrel is fixedly connected inside the connecting plate, and the threaded barrel is threadedly connected to the outside of the bidirectional screw, a long rod is symmetrically and fixedly connected up and down inside the U-shaped plate, and a movable seat is equidistantly slidably connected to the outside of the long rod, a clamping arm is arranged on the inner side of the U-shaped plate, and movable arms are symmetrically arranged on the outside of the clamping arm, and one end of the movable arm is rotatably connected to the corresponding movable seat, a spring is symmetrically sleeved on the outside of the long rod, and the two movable seats at the outer edge of the long rod are elastically connected to the corresponding inner wall of the U-shaped plate through the spring.

[0006] Furthermore, the frame has side walls on three sides, and the remaining side is provided with a notch, a baffle is provided at the notch, one end of the baffle is rotatably connected to the outside of the load-bearing rod on one side of the frame, the other end of the baffle is provided with an opening, and the opening is sleeved on the outside of the load-bearing rod on the other side of the frame; the cart is a flatbed cart structure, including a flatbed, and one side of the flatbed is a handle; when the cart enters the frame, the handle of the cart is located between the adaptive clamping mechanism on one side and the baffle.

[0007] Furthermore, the width of the frame gap is greater than the width of the cart and smaller than the spacing between the carrying bars.

[0008] Furthermore, two groups of movable arms are symmetrically arranged on the outer side of the clamping arm, and each group of movable arms has two movable arms.

[0009] Furthermore, it also includes: Bottom plate: the bottom plate is used for bearing support; A base, with the top of the bottom plate being fixedly connected to the base; The top of the base is fixedly connected with the column; the lifting frame is slidably connected to the outside of the column; A top seat, the top seat is fixedly connected to the top of the column; The transmission assembly is connected between the base and the top seat.

[0010] Furthermore, the upper surface of the base plate is symmetrically fixedly connected with guide frames, and the upper surface of the base plate is symmetrically fixedly connected with convex strips between the guide frames. When the cart is pushed between the two guide frames, the four running wheels of the cart are just on the inner side of the guide frames, and the convex strips are located on the front and rear sides of the cart to position the cart; when the cart enters the space enclosed by the guide frames and the convex strips, the cart is located directly below the frame.

[0011] Furthermore, the transmission assembly includes a rotating shaft, a sprocket, a chain segment, a motor, a counterweight and a connecting piece. The base and the top seat are rotatably connected to the rotating shaft, the outer side of the rotating shaft is symmetrically fixedly connected to the sprocket, the outer side of the sprocket is sleeved with a chain segment, the inside of the cylinder is slidably connected to the counterweight, the upper and lower sides of the counterweight and the upper and lower sides of the lifting frame are provided with connecting pieces, the two ends of the chain segment are fixedly connected to the corresponding connecting pieces respectively, a motor is installed on one side of the base, and the output end of the motor is fixedly connected to one end of the corresponding rotating shaft.

[0012] Furthermore, the top and bottom of the counterweight block are fixedly connected to U-shaped frames at equal distances, and rollers are rotatably connected inside the U-shaped frames, and one edge of the roller is in contact with the inner wall of the column; when the counterweight block is lifted or lowered, the roller rotates along the inner wall of the column, making the counterweight block more stable during the lifting process.

[0013] Furthermore, an inner cavity is provided inside the counterweight block, and the inner cavity is provided with a T-shaped block. A sliding rod is fixedly connected to the top of the T-shaped block. The sliding rod is slidably connected to the inside of the counterweight block, and the top of the sliding rod is fixedly connected to the corresponding connecting piece. An elastic bow piece is provided inside the T-shaped block, and both ends of the elastic bow piece are fixedly connected to the inner wall of the top of the inner cavity, and the elastic bow piece is elastically arranged to store force. A bending rod is symmetrically rotatably connected inside the inner cavity, and a receiving rod is symmetrically fixedly connected to the inner wall of the T-shaped block. One end of the bending rod is slidably connected to the outside of the corresponding receiving rod, and the other end of the bending rod is provided with an inclined surface. Toothed bars are symmetrically arranged inside the cylinder, and the other end of the bending rod is arranged opposite to the toothed bar.

[0014] Furthermore, guide columns are provided on both sides of the cylinder column, and fixed plates are symmetrically fixedly connected on both sides of the lifting frame, and the fixed plates and the guide columns are parallel to each other. Clamping wheels are symmetrically rotatably connected on the opposite side of the fixed plates, and the clamping wheels form a clamping structure on both sides of the guide columns. A guide wheel is rotatably connected inside the fixed plate, and one edge of the guide wheel is in contact with the corresponding guide column.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: The lifting device for construction provided by the present invention realizes the rapid lifting and lowering of materials through automated operation, greatly improving the material transportation efficiency at the construction site. The operator only needs to push the cart into the specified position and start the motor to complete the lifting or lowering of the material, thereby shortening the construction time and improving the overall construction efficiency. The positioning block design in the device ensures the stability and safety of the cart inside the frame. When the cart enters and leaves the frame, the positioning block can automatically flip to provide a smooth passage for the cart, and after the cart completely enters the frame, the cart is firmly fixed in the frame through the blocking effect of the blocking rod, effectively preventing the material from shaking and falling off during the lifting process, and significantly improving the construction safety.

[0016] The present invention enables the clamping arm to be autonomously adjusted according to the shape of the clamped goods through the cooperation of the clamping arm, the movable arm and the movable seat. At the same time, the movable seat provides a wide adjustment space for the clamping arm. The movable seat will automatically adjust its position according to the contact between the clamping arm and the goods on the cart. If a certain part of the goods is wider, the corresponding spacing between the movable seats will increase, so that the clamping arm can conform to the contour of the goods; conversely, if a certain part of the goods is narrower, the movable seats will be close to each other, and the spacing between the clamping arm and the U-shaped plate will increase accordingly. This dynamic adjustment ensures that the clamping arm can clamp the goods tightly and evenly, and ensures that no matter what the shape of the goods is, they can be firmly and evenly clamped, thereby improving the stability during the lifting process, reducing the risk of goods falling off during the lifting process, and providing a safer working environment for construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a lifting device for building construction provided by the present invention; Figure 2 is a schematic diagram of the structure of the transmission component; Figure 3 is a schematic diagram of the structure of the lifting frame; Figure 4 It is a structural diagram of the framework; Figure 5 is a schematic diagram of the structure of the base plate; Figure 6 It is a schematic diagram of the position structure of the counterweight block and the toothed bar; Figure 7 It is a structural cross-sectional view of the counterweight block; Figure 8 It is a structural cross-sectional view of the T-shaped block; Fig. 9 It is a schematic diagram of the structure of the elastic bow after rebounding.

[0018] Numbers in the figure: 1. Bottom plate; 2. Base; 3. Cylinder; 4. Top seat; 5. Lifting frame; 6. Transmission assembly; 7. Frame; 71. Loading rod; 72. Stop rod; 8. Positioning block; 9. Trolley; 10. Guide column; 11. Fixed plate; 12. Clamping wheel; 13. Guide wheel; 14. U-shaped frame; 15. Roller; 16. Guide frame; 17. Raised strip; 18. Semicircular block; 19. Baffle; 20. Opening; 21. Guardrail; 22. Sliding rod; 23 , T-shaped block; 24, elastic bow piece; 25, toothed strip; 26, bending rod; 27, inner cavity; 28, receiving rod; 29, supporting column; 30, connecting plate; 31, U-shaped plate; 32, bidirectional screw; 33, threaded cylinder; 34, long rod; 35, movable seat; 36, clamping arm; 37, movable arm; 38, spring; 61, rotating shaft; 62, sprocket; 63, chain segment; 64, motor; 65, counterweight block; 66, connecting piece. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0020] See also Figures 1 to 9 This embodiment provides a lifting device for construction, and the lifting device for construction includes: Bottom plate 1, bottom plate 1 is used for bearing support; Base 2, the top of the bottom plate 1 is fixedly connected with the base 2; The top of the base 2 is fixedly connected with the column 3; A top seat 4, which is fixedly connected to the top of the column 3; A lifting frame 5 is slidably connected to the outer side of the column 3; A transmission assembly 6 is installed between the base 2 and the top seat 4, and the transmission assembly 6 is used to drive the lifting frame 5 to move up and down; Frame 7, one side of the lifting frame 5 is fixedly connected with frame 7, three sides of frame 7 are provided with side walls, and the remaining side is provided with a notch, and the frame 7 is an open structure at the top and bottom; a load-bearing rod 71 and a blocking rod 72 are provided inside the frame 7, and the load-bearing rod 71 and the blocking rod 72 are symmetrically fixedly connected on both sides of the inside of the frame 7; and the blocking rod 72 is located between the side wall of the frame 7 and the load-bearing rod 71; a baffle 19 is provided at the notch on one side of the frame 7, one end of the baffle 19 is rotatably connected to the outside of the load-bearing rod 71 on one side of the frame 7, and the other end of the baffle 19 is provided with an opening 20, and the opening 20 is sleeved on the outside of the load-bearing rod 71 on the other side of the frame 7, and guardrails 21 are provided on the three side walls of the frame 7 and the top of the baffle 19.

[0021] It should be noted that: the gap in the frame 7 facilitates the trolley 9 to leave the frame 7, and the baffle 19 rotates around the load-bearing rod 71. The function of the baffle 19 is to close the gap when it is necessary to prevent the trolley 9 from leaving the frame 7; the guardrail 21 provides safety protection to protect the trolley 9 and the goods on the trolley 9. The width of the gap in the frame 7 is greater than the width of the trolley 9 but less than the spacing between the load-bearing rods 71 ​​on both sides; it ensures that the trolley 9 body can pass through easily, and when necessary, limits the position of the trolley 9 body in the frame 7 or prevents the trolley 9 body from accidentally leaving the frame 7. The trolley 9 is a flatbed structure, including a flatbed, one side of the flatbed is a push handle, and the bottom of the flatbed is a running wheel. There is a certain distance between the edge of the flatbed and the running wheel.

[0022] The upper surface of the base plate 1 is symmetrically fixedly connected with guide frames 16, and the upper surface of the base plate 1 is symmetrically fixedly connected with convex strips 17 between the guide frames 16. When the cart 9 is pushed between the two guide frames 16, the four running wheels of the cart 9 are just on the inner side of the guide frames 16, and the convex strips 17 are located on the front and rear sides of the cart 9 for positioning the cart 9; when the cart 9 enters the space enclosed by the guide frames 16 and the convex strips 17, the cart 9 is located directly below the frame 7.

[0023] It should be noted that the guide frame 16 provides a clear path for the cart 9 to enter and leave, and the convex strip 17 provides a designated position for the cart 9 .

[0024] A plurality of positioning blocks 8 are equidistantly connected to the outside of the bearing rod 71 for rotation, and the top of one end of the positioning block 8 is in contact with the bottom surface of the blocking rod 72; the other end of the positioning block 8 is suspended in the air, and a raised semicircular block 18 is provided on the top of the positioning block 8 near the suspended end thereof, so that the center of gravity of the positioning block 8 is biased toward the suspended end; the positioning block 8 is used to support the bottom of the flat plate of the cart 9.

[0025] See also Figures 1 to 5 The transmission assembly 6 includes a rotating shaft 61, a sprocket 62, a chain segment 63, a motor 64, a counterweight 65 and a connecting piece 66. The rotating shaft 61 is rotatably connected inside the base 2 and the top seat 4, and the sprocket 62 is symmetrically fixedly connected to the outside of the rotating shaft 61. The chain segment 63 is sleeved on the outside of the sprocket 62. The counterweight 65 is slidably connected inside the column 3. Connecting pieces 66 are provided on the upper and lower sides of the counterweight 65 and the upper and lower sides of the lifting frame 5. Both ends of the chain segment 63 are fixedly connected to the corresponding connecting pieces 66 respectively. A motor 64 is installed on one side of the base 2, and the output end of the motor 64 is fixedly connected to one end of the corresponding rotating shaft 61.

[0026] It should be noted that: when the motor 64 is started, it will drive the rotating shaft 61 connected to it to rotate, and the rotation of the rotating shaft 61 will drive the sprocket 62 to rotate synchronously, and the rotation of the sprocket 62 will drive the chain segment 63 to move. Since the two ends of the chain segment 63 are respectively fixedly connected to the counterweight block 65 and the connecting piece 66 on the lifting frame 5, the movement of the chain segment 63 will drive the counterweight block 65 and the lifting frame 5 to perform corresponding lifting movements. The counterweight block 65 slides inside the column 3 to balance the weight of the lifting frame 5 to ensure a smooth lifting process. Through this chain transmission method, the lifting frame 5 can achieve precise and smooth lifting movements to meet the material lifting needs in construction.

[0027] See also Figures 1 to 5 The top and bottom of the counterweight block 65 are evenly and fixedly connected to a U-shaped frame 14, and the inside of the U-shaped frame 14 is rotatably connected to a roller 15, and one side edge of the roller 15 is in contact with the inner wall of the column 3; during the lifting process of the counterweight block 65, the roller 15 rotates along the inner wall of the column 3, allowing the counterweight block 65 to be more stable during the lifting process.

[0028] See also Figures 1 to 5 , guide columns 10 are provided on both sides of the cylinder 3, and fixed plates 11 are symmetrically fixedly connected to the two sides of the lifting frame 5, and the fixed plates 11 and the guide columns 10 are parallel to each other, and the opposite side of the fixed plate 11 is symmetrically rotatably connected to the clamping wheels 12, and the clamping wheels 12 form a clamping structure on both sides of the guide columns 10, and the fixed plate 11 is rotatably connected inside, and one edge of the guide wheel 13 is in contact with the corresponding guide column 10; it should be noted that: the clamping wheels 12 form a clamping structure on both sides of the guide column 10 to ensure that the lifting frame 5 can remain stable when moving on the cylinder 3 without deviating or shaking, and the guide wheels 13 can roll along the surface of the guide column 10 to provide additional guidance and auxiliary support for the movement of the lifting frame 5.

[0029] When it is necessary to lift the material, the frame 7 is lowered, and the trolley 9 enters from the bottom of the frame 7. The flat plate of the trolley 9 will push the positioning block 8 to flip during the entry process, providing entry space for the flat plate of the trolley 9. When the bottom of the flat plate completely enters the frame 7, the suspended end of the positioning block 8 flips in the opposite direction under the action of gravity, so that the upper surface of the end of the positioning block 8 close to the stop bar 72 fits with the bottom of the stop bar 72. At this time, the bottom surface of the flat plate of the trolley 9 is supported and fixed by the positioning block 8. Start the motor 64, the motor 64 drives the transmission assembly 6 to work, so that the chain segment 63 moves, thereby driving the lifting frame 5 and the frame 7 fixed thereon and the trolley 9 to lift and lower. The lifting frame 5 slides along the outer side of the column 3 to achieve the lifting or lowering of the material. When the material reaches the target position, stop the motor 64 and the lifting frame 5 stops moving.

[0030] See also Figures 1 to 9 The counterweight block 65 is provided with an inner cavity 27, and the inner cavity 27 is provided with a T-shaped block 23. The top of the T-shaped block 23 is fixedly connected with a slide bar 22, and the slide bar 22 is slidably connected to the inside of the counterweight block 65, and the top of the slide bar 22 is fixedly connected to the corresponding connecting piece 66. An elastic bow piece 24 is provided inside the T-shaped block 23, and both ends of the elastic bow piece 24 are fixedly connected to the inner wall of the top of the inner cavity 27, and the elastic bow piece 24 is elastically arranged to store force. A bending rod 26 is symmetrically connected to the inner cavity 27 for rotation, and a receiving rod 28 is symmetrically fixedly connected to the inner wall of the T-shaped block 23. One end of the bending rod 26 is slidably connected to the outer side of the corresponding receiving rod 28, and the other end of the bending rod 26 is provided with an inclined surface. Toothed bars 25 are symmetrically arranged inside the cylinder 3, and the other end of the bending rod 26 is arranged directly opposite to the toothed bar 25. It should be noted that: inside the column 3, an anti-fall mechanism is cleverly designed on the counterweight block 65, which is specially designed to deal with the possible accidental breakage of the chain segment 63 to ensure safety. In normal operation, the chain segment 63 is firmly connected to the counterweight block 65 through the connecting piece 66, and drives the slide bar 22 to be in the upward sliding position. During this process, the T-shaped block 23 at the bottom of the slide bar 22 compresses the elastic bow piece 24 to accumulate elastic potential energy. Once the chain segment 63 is unfortunately broken, the original The pulling force acting on the slide bar 22 disappears instantly. At this time, the elastic bow piece 24 rebounds quickly with its previously accumulated elastic force, pushing the T-shaped block 23 and the slide bar 22 to move downward. With this series of linkage reactions, the T-shaped block 23 drives the bending rod 26 to rotate through the receiving rod 28 until one end of the bending rod 26 is accurately embedded in the toothed bar 25 inside the column 3, forming an effective locking structure, thereby timely preventing the counterweight block 65 from falling further, ensuring the safety and stability of the overall structure.

[0031] See also Figures 1 to 5 An adaptive clamping mechanism is also provided on the inner side of the frame 7, and the adaptive clamping mechanism includes a bidirectional screw 32, a long rod 34, a movable seat 35, a clamping arm 36 and a movable arm 37. A plurality of support columns 29 are fixedly connected inside one side of the lifting frame 5, and a connecting plate 30 is symmetrically slidably connected to the outer side of the support column 29. U-shaped plates 31 are symmetrically provided inside the frame 7, and the connecting plate 30 is fixedly connected to the corresponding U-shaped plate 31. A bidirectional screw 32 is rotatably connected inside one side of the lifting frame 5, and a hand wheel is connected to one end of the bidirectional screw 32. A threaded barrel 33 is fixedly connected to the inside of the connecting plate 30, and the threaded barrel 33 is threadedly connected to the outside of the bidirectional screw 32. A long rod 34 is symmetrically fixedly connected to the inside of the U-shaped plate 31, and a movable seat 35 is equidistantly slidably connected to the outside of the long rod 34. A clamping arm 36 is provided on the inside of the U-shaped plate 31, and two groups of movable arms 37 are symmetrically provided on the outside of the clamping arm 36, each group of movable arms 37 is provided with two, and one end of the movable arm 37 is rotatably connected to the corresponding movable seat 35. A spring 38 is symmetrically sleeved on the outside of the long rod 34, and the two movable seats 35 at the outermost edges of the long rod 34 are elastically connected to the corresponding inner wall of the U-shaped plate 31 through the spring 38.

[0032] It should be noted that each clamping arm 36 is connected to two corresponding movable seats 35 through two movable arms 37. This design enables the clamping arm 36 to be adjusted autonomously according to the shape of the clamped goods. The free sliding of the movable seat 35 on the long rod 34 provides a wide adjustment space for the clamping arm 36. When the U-shaped plates 31 are driven by the bidirectional screw 32 to approach each other, the movable seat 35 will automatically adjust its position according to the contact between the clamping arm 36 and the goods on the cart 9. If a part of the goods is wider, the distance between the corresponding two movable seats 35 will increase under the squeezing effect of the goods, so that the clamping arm 36 can conform to the contour of the goods; because the corresponding two movable seats 35 will squeeze the other movable seats 35 on the same long rod 34 when sliding, the clamping arms 36 corresponding to the other movable seats 35 will extend accordingly to firmly clamp other positions of the goods. On the contrary, if a part of the cargo is narrower, the movable seats 35 will move closer to each other, and the distance between the clamping arm 36 and the U-shaped plate 31 will increase accordingly. This dynamic adjustment ensures that the clamping arm 36 can clamp the cargo tightly and evenly, ensuring that no matter what the shape of the cargo is, it can be clamped firmly and evenly, thereby improving the stability during the lifting process, reducing the risk of cargo falling off during the lifting process, and providing a safer working environment for construction personnel.

[0033] The working principle of the lifting device for building construction provided by the present invention is as follows: The operator first pushes the trolley 9 to the designated position below the frame 7, which is between the guide frame 16 and the convex strip 17 below the frame 7, to ensure that the trolley 9 can smoothly enter the interior of the frame 7. After the trolley 9 is positioned, the operator prepares to start the lifting device. At this time, the trolley 9 is located below the frame 7, waiting for the frame 7 to descend for entry.

[0034] The operator starts the motor 64, which drives the transmission assembly 6 to start working, and drives the frame 7 to start descending along the column 3 through the lifting frame 5. When the frame 7 descends to a certain height, the trolley 9 starts to contact and push the positioning block 8. Since the positioning block 8 is rotatably connected, the side of the positioning block 8 away from the stop bar 72 is flipped upward under the push of the flat plate of the trolley 9, providing space for the trolley 9 to enter the interior of the frame 7. As the frame 7 continues to descend, the flat plate of the trolley 9 completely enters the interior of the frame 7. When the trolley 9 completely enters the frame 7 and the bottom of the flat plate of the trolley 9 exceeds the positioning block 8, due to the center of gravity of the positioning block 8, they will naturally flip and reset to a horizontal state. After the reset, one side of the positioning block 8 is blocked by the stop bar 72, so that it can only maintain a horizontal state and cannot flip downward. In this way, the positioning block 8 plays the role of carrying the trolley 9 during the process of the frame 7 rising. During the process of the trolley 9 entering the frame 7, the push handle of the trolley 9 is located between the adaptive clamping mechanism and the baffle 19 on one side.

[0035] By rotating the hand wheel connected to the bidirectional screw 32, the two long rods 34 are driven to approach each other through the rotation of the bidirectional screw 32, so as to clamp the goods on the cart 9. When the U-shaped plates 31 are driven to approach each other by the bidirectional screw 32, the movable seat 35 automatically adjusts its position according to the contact between the clamping arm 36 and the goods on the cart 9. This dynamic adjustment ensures that the clamping arm 36 can clamp the goods tightly and evenly, ensuring that no matter what the shape of the goods is, they can be clamped firmly and evenly.

[0036] After clamping the goods on the cart 9, the operator starts the motor 64 again to drive the transmission assembly 6 to make the frame 7 start to rise. The positioning blocks 8 support the two sides of the bottom of the flat plate of the cart 9, so the rise of the frame 7 will also rise with the cart 9, and the cart 9 and the goods on it will be safely and stably lifted to the required height.

[0037] After reaching the designated height, the hand wheel is rotated in the opposite direction. At this time, the flat plate of the trolley 9 is equivalent to the cargo platform. When the trolley 9 does not need to be taken out from the frame 7, the operator can directly take out the cargo from the top of the frame 7. Then the frame 7 is lowered to make the trolley 9 onto the bottom plate 1; the baffle 19 is rotated to open the gap of the frame 7, and the operator pulls the trolley 9 out of the frame 7 through the opened gap, completing the entire lifting and transportation process.

[0038] The anti-fall mechanism is cleverly designed on the counterweight 65 inside the column 3, which is specially designed to deal with the possible accidental breakage of the chain segment 63 to ensure safety. During normal operation, the chain segment 63 is firmly connected to the counterweight 65 through the connecting piece 66, and drives the slide bar 22 to be in the upward sliding position. During this process, the T-shaped block 23 at the bottom of the slide bar 22 compresses the elastic bow piece 24 to accumulate elastic potential energy. Once the chain segment 63 unfortunately breaks, the pulling force originally acting on the slide bar 22 disappears instantly. At this time, the elastic bow piece 24 quickly rebounds with its previously accumulated elastic force, pushing the T-shaped block 23 and the slide bar 22 to move downward. With this series of linkage reactions, the T-shaped block 23 drives the bending rod 26 to rotate through the receiving rod 28 until one end of the bending rod 26 is accurately embedded in the toothed bar 25 inside the column 3, forming an effective locking structure, thereby timely preventing the counterweight 65 from falling further, ensuring the safety and stability of the overall structure.

[0039] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A lifting device for use in building construction, comprising a lifting frame (5) and a transmission assembly (6), wherein the transmission assembly (6) is connected to the lifting frame (5), and the transmission assembly (6) is used to drive the lifting frame (5) to lift; characterized in that: A frame (7) is fixedly connected to one side of the lifting frame (5), and the frame (7) is an open structure at the top and bottom; a load-bearing rod (71) and a stop rod (72) are provided inside the frame (7), and the load-bearing rod (71) and the stop rod (72) are symmetrically fixedly connected to the two sides of the frame (7); a plurality of positioning blocks (8) are equidistantly rotatably connected to the outside of the load-bearing rod (71), and the top of one end of the positioning block (8) is in contact with the bottom surface of the stop rod (72); the other end of the positioning block (8) is suspended, and a raised semicircular block (18) is provided on the top of the positioning block (8) near the suspended end; The center of gravity of the positioning block (8) is biased toward the suspended end; the frame (7) is lowered by the lifting frame (5), and the cart (9) enters from the bottom of the frame (7). The bottom of the cart (9) pushes the positioning block (8) to flip, providing an entry space for the cart (9). When the bottom of the cart (9) completely enters the frame (7), the suspended end of the positioning block (8) flips in the opposite direction under the action of gravity, so that the upper surface of the end of the positioning block (8) close to the stop rod (72) fits with the bottom of the stop rod (72), and the bottom surface of the cart (9) is supported and fixed by the positioning block (8); An adaptive clamping mechanism is provided on the inner side of the frame (7), and the adaptive clamping mechanism comprises a bidirectional screw (32), a long rod (34), a movable seat (35), a clamping arm (36) and a movable arm (37); a plurality of support columns (29) are fixedly connected to the inside of one side of the lifting frame (5), and a connecting plate (30) is symmetrically slidably connected to the outside of the support column (29); a U-shaped plate (31) is symmetrically provided inside the frame (7), and the connecting plate (30) is fixedly connected to the corresponding U-shaped plate (31); a bidirectional screw (32) is rotatably connected to the inside of one side of the lifting frame (5), and a threaded cylinder (33) is fixedly connected to the inside of the connecting plate (30). ), and the threaded cylinder (33) is threadedly connected to the outside of the bidirectional screw (32), a long rod (34) is symmetrically fixedly connected to the inside of the U-shaped plate (31) in the upper and lower directions, and a plurality of movable seats (35) are equidistantly slidably connected to the outside of the long rod (34), a clamping arm (36) is provided on the inside of the U-shaped plate (31), and movable arms (37) are symmetrically provided on the outside of the clamping arm (36), and one end of the movable arm (37) is rotatably connected to the corresponding movable seat (35), and a spring (38) is symmetrically sleeved on the outside of the long rod (34), and two movable seats (35) at the outermost edge of the outer side of the long rod (34) are elastically connected to the inner wall of the corresponding U-shaped plate (31) through the spring (38).

2. A lifting device for construction according to claim 1, characterized in that: The frame (7) has side walls on three sides, and a notch is provided on the remaining side. A baffle (19) is provided at the notch. One end of the baffle (19) is rotatably connected to the outside of a bearing rod (71) on one side of the frame (7). The other end of the baffle (19) is provided with an opening (20), and the opening (20) is sleeved on the outside of the bearing rod (71) on the other side of the frame (7). The cart (9) is a flatbed cart structure, including a flatbed, and one side of the flatbed is a push handle. When the cart (9) enters the frame (7), the push handle of the cart (9) is located between the adaptive clamping mechanism on one side and the baffle (19).

3. A lifting device for construction according to claim 2, characterized in that: The width of the notch of the frame (7) is greater than the width of the trolley (9) and smaller than the distance between the bearing bars (71) on both sides.

4. A lifting device for construction according to claim 1, characterized in that: Two groups of movable arms (37) are symmetrically arranged on the outer side of the clamping arm (36), and each group of movable arms (37) has two movable arms.

5. A lifting device for construction according to claim 1, characterized in that: Also includes: A bottom plate (1), the bottom plate (1) is used for bearing support; A base (2), the top of the bottom plate (1) is fixedly connected to the base (2); The base (2) is fixedly connected to the top of the column (3); the lifting frame (5) is slidably connected to the outside of the column (3); A top seat (4), wherein the top seat (4) is fixedly connected to the top end of the column (3); The transmission assembly (6) is connected between the base (2) and the top seat (4).

6. A lifting device for construction according to claim 5, characterized in that: The upper surface of the base plate (1) is symmetrically fixedly connected to a guide frame (16), and the upper surface of the base plate (1) is symmetrically fixedly connected to a convex strip (17) located between the two guide frames (16). The guide frames (16) and the convex strip (17) are used to position the cart (9); when the cart (9) enters the space enclosed by the guide frames (16) and the convex strip (17), the cart (9) is located directly below the frame (7).

7. A lifting device for construction according to claim 5, characterized in that: The transmission assembly (6) comprises a rotating shaft (61), a sprocket (62), a chain segment (63), a motor (64), a counterweight (65) and a connecting piece (66). The rotating shaft (61) is rotatably connected inside the base (2) and the top base (4). The sprocket (62) is symmetrically fixedly connected to the outside of the rotating shaft (61). The chain segment (63) is sleeved on the outside of the sprocket (62). The counterweight (65) is slidably connected inside the column (3). The upper and lower sides of the counterweight (65) and the upper and lower sides of the lifting frame (5) are provided with connecting pieces (66). Both ends of the chain segment (63) are fixedly connected to corresponding connecting pieces (66). A motor (64) is installed on one side of the base (2). The output end of the motor (64) is fixedly connected to one end of the corresponding rotating shaft (61).

8. A lifting device for construction according to claim 7, characterized in that: The top and bottom of the counterweight (65) are fixedly connected to a U-shaped frame (14) at equal distances, and the inside of the U-shaped frame (14) is rotatably connected to a roller (15), and one side edge of the roller (15) is in contact with the inner wall of the cylinder (3); during the lifting process of the counterweight (65), the roller (15) rotates along the inner wall of the cylinder (3), so that the counterweight (65) is more stable during the lifting process.

9. A lifting device for construction according to claim 7 or 8, characterized in that: An inner cavity (27) is provided inside the counterweight block (65), and a T-shaped block (23) is provided inside the inner cavity (27). A sliding rod (22) is fixedly connected to the top of the T-shaped block (23). The sliding rod (22) is slidably connected inside the counterweight block (65), and the top of the sliding rod (22) is fixedly connected to the corresponding connecting piece (66). An elastic bow piece (24) is provided inside the T-shaped block (23), and both ends of the elastic bow piece (24) are fixedly connected to the inner wall of the top of the inner cavity (27), and the elastic bow piece (24) is arranged to be elastic and store force. A bending rod (26) is symmetrically rotatably connected inside the inner cavity (27), and a receiving rod (28) is symmetrically fixedly connected to the inner wall of the T-shaped block (23). One end of the bending rod (26) is slidably connected to the outer side of the corresponding receiving rod (28), and the other end of the bending rod (26) is provided with an inclined surface. Toothed bars (25) are symmetrically provided inside the cylinder (3), and the other end of the bending rod (26) is arranged directly opposite to the toothed bar (25).

10. A lifting device for construction according to claim 5, characterized in that: Guide columns (10) are provided on both sides of the cylinder column (3); fixed plates (11) are symmetrically fixedly connected to both sides of the lifting frame (5); the fixed plates (11) and the guide columns (10) are parallel to each other; clamping wheels (12) are symmetrically rotatably connected to the opposite side of the fixed plate (11); the clamping wheels (12) form a clamping structure on both sides of the guide columns (10); a guide wheel (13) is rotatably connected to the inside of the fixed plate (11); and one side edge of the guide wheel (13) is in contact with the corresponding guide column (10).

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