Hoisting structure for highway construction

Abstract

The invention relates to the technical field of hoisting structures, in particular to a hoisting structure for highway construction, which comprises a hoisting frame, and a hoisting opening is fixedly mounted at the top of the hoisting frame and used for being connected with a hook of hoisting equipment; the U-shaped pressing plate is installed under the hanging bracket in a sliding mode and used for limiting the two ends of a hoisted object; the four sets of hoisting assemblies are symmetrically installed on the side faces of the hoisting frame in pairs, each set of hoisting assembly comprises a rotating roller located in the middle of the hoisting frame and a fixed roller located at the end of the hoisting frame, a hoisting rope is connected between each set of rotating roller and the corresponding fixed roller, and a hoisting hook is installed on each hoisting rope in a sliding mode; and a driving motor for driving the rotating roller to rotate so as to wind the hoisting rope on the rotating roller is fixedly mounted on the hoisting frame. According to the plate lifting device, the two ends of the U-shaped pressing plate can limit a plate, the U-shaped pressing plate has pressure on the upper portion of the plate, and shaking of the plate in the lifting process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting structures, and in particular to a hoisting structure for highway construction. Background Art

[0002] At the construction site of highway construction, there are many pipes or steel plates and construction materials with large individual weights. It is difficult to transport the construction materials by manpower alone, and a lifting device is needed to move the materials by lifting. When hoisting plates, usually a lifting rope is used to fix the stacked plates together, and then a crane is hung on the lifting rope to lift the stacked plates. However, since the plates are stacked, the plate stacked in the middle usually only contacts the lifting rope on the sides, and the lifting rope is not reliable for fixing the plate in the middle. The plate in the middle will inevitably shake during the lifting process. For example, due to external factors, inertia during the lifting process, or swinging and floating during the lifting process, dangerous accidents are prone to occur. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the present invention provides a hoisting structure for highway construction, which can effectively solve the problem in the prior art that, during the lifting process of the plates, since the plates are stacked, the plates stacked in the middle usually only contact the lifting ropes on the sides, and the plates in the middle will inevitably shake during the lifting process, which is prone to dangerous accidents.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a hoisting structure for highway construction, comprising a hanger, a hoisting port fixedly installed on the top, and the hoisting port is used to connect with a hook of a lifting device; The U-shaped pressure plate is slidably installed just below the hanger and is used to limit the two ends of the hoisted objects; Four groups of lifting components are symmetrically installed on the sides of the hanger in pairs. Each group of lifting components includes a rotating roller located in the middle of the hanger and a fixed roller located at the end of the hanger. A lifting rope is connected between each group of rotating rollers and the fixed rollers. A hook is slidably installed on the lifting rope. A driving motor is fixedly installed on the hanger to drive the rotating roller to rotate so that the lifting rope is wrapped around the rotating roller.

[0005] Furthermore, an installation box is fixedly installed in the middle of the hanger, the drive motor is fixedly installed inside the installation box, a gear set is fixedly installed inside the installation box, two drive shafts are rotatably installed inside the installation box, the two drive shafts are respectively located on both sides of the drive motor and are connected to the drive motor through the gear set, both ends of the drive shaft are rotatable and extend out of the installation box and are connected to the rotating roller, and the drive motor drives the rotating roller to rotate through the drive shaft.

[0006] Furthermore, the U-shaped pressure plate opens downward, and a plurality of sliding rods are fixedly installed above the U-shaped pressure plate, and a plurality of fixed blocks are fixedly installed on the hanger. When the U-shaped pressure plate is installed under the hanger, each of the sliding rods slides through each fixed block respectively, and the sliding rods are provided with elastic parts for driving the U-shaped pressure plate to move downward relative to the hanger.

[0007] Furthermore, a limiting roller is coaxially fixedly mounted on the two driving shafts, a plurality of limiting protrusions are distributed in a circular array on the outer circumferential surface of the limiting roller, and a limiting block for clamping the limiting roller is arranged between the two driving shafts.

[0008] Furthermore, an elastic slide bar is fixedly installed below the limit block, and the lower end of the elastic slide bar passes through the bottom of the installation box and is located above the U-shaped pressure plate. Arc-shaped limit grooves are provided on both sides of the limit block, and a groove for clamping on the limit protrusion is provided on the inner wall of the limit groove. When the U-shaped pressure plate moves upward to the top, the upper end surface of the U-shaped pressure plate drives the limit block upward to press against the outer side of the limit roller.

[0009] Furthermore, a pressing assembly for pressing down the limit block is installed above the installation box, and the pressing assembly includes a lifting frame installed above the installation box for sliding up and down, the lower end of the lifting frame is located directly above the limit block, a spring for driving the lifting frame to move upward is arranged above the lifting frame, an extension rod is arranged above the lifting frame, the top of the extension rod passes through a connecting plate in the middle of the hanger, and a pressing rod for pressing the top of the extension rod is rotatably installed on the connecting plate.

[0010] Furthermore, a plurality of mounting holes are provided at the bends at both ends of the U-shaped pressure plate, and a rotating plate is rotatably installed inside each of the mounting holes. The rotating plate is used to fix the material inside the U-shaped pressure plate, and a guide plate is provided on the hanger for driving the lower end of the rotating plate to rotate toward the inside of the U-shaped pressure plate.

[0011] Furthermore, the rotating plate includes a bending section and a vertical section, and a rotating connecting through hole for rotationally connecting with the U-shaped pressure plate is provided at the bending part of the bending section, a sliding shaft is fixedly installed on the top of the vertical section, and a guide through hole is obliquely provided on the guide plate, and the sliding shaft is slidably installed inside the guide through hole. During the upward movement of the U-shaped pressure plate, the guide through hole guides the sliding shaft to move in a direction away from the middle of the hanger, so that the lower end of the rotating plate rotates toward the inside of the U-shaped pressure plate.

[0012] Furthermore, a bending groove is provided on the bending section of the rotating plate, the bending groove is located at the end surface of the rotating plate away from the middle of the hanger, and a protruding block is fixedly provided on the end surface of the rotating plate facing the middle of the hanger.

[0013] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects: 1. In the present invention, a U-shaped pressure plate is installed under the hanger to prevent the plates from sliding to both ends during the lifting process, so that the plates are more stably restricted under the U-shaped pressure plate, and lifting components are arranged on both sides of the U-shaped pressure plate. In the process of lifting the stacked plates, the stacked plates are pulled upward to the inside of the U-shaped pressure plate. The two ends of the U-shaped pressure plate can limit the plates. The U-shaped pressure plate exerts pressure on the top of the plates, thereby reducing the shaking of the plates during the lifting process.

[0014] 2. In the present invention, since the hook is slidably installed on the lifting rope, it can slide to any position on the lifting rope for hanging during use, and plates of different sizes can be lifted. In addition, since the lifting of the plate from the ground and the lowering of the plate to the ground are operated by controlling the driving motor, the construction personnel can control the lifting or lowering of the plate more smoothly on the ground, and can avoid damaging or bumping the plate during the lifting or lowering process.

[0015] 3. In the present invention, a sliding rod is arranged above the U-shaped pressure plate, and the U-shaped pressure plate is slidably connected to the hanger through the sliding rod. At the same time, an elastic member is arranged to keep a distance between the U-shaped pressure plate and the hanger under normal conditions. During the lifting process, the top of the stacked plates rests on the top inner wall of the U-shaped pressure plate, so that the U-shaped pressure plate has a certain pressure on the top of the stacked plates, which can make each layer of plates have a greater friction force and reduce the relative sliding between each plate. In addition, since the total pressure required in the process of compressing multiple elastic members per unit distance is quantitative, each time the lifting process only needs to move the U-shaped pressure plate upward to the same position, the pressure of the U-shaped pressure plate on the stacked plates each time can be clearly understood.

[0016] 4. In the present invention, rotating plates are rotatably installed at both ends of the U-shaped pressure plate, and guide plates for driving the rotating plates to rotate are arranged on the hanger, so that the lower end of the rotating plate can be rotated toward the plate inside the U-shaped pressure plate during the upward movement of the U-shaped pressure plate, so that the rotating plate can more firmly squeeze and fix the two ends of the hoisted plate. In addition, since there are multiple groups of rotating plates and the rotating plates are elastic, when clamping and fixing plates with uneven ends, each rotating plate can be slightly deformed according to the different sizes of the ends of the plate, so as to more completely fix and support each position of the end of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A; Figure 3 It is a schematic diagram of the structure of the present invention from a bottom-up perspective; Figure 4 This is a schematic diagram of the structure of the present invention without the U-shaped pressing plate; Figure 5 It is a schematic diagram of the overall structure of the U-shaped pressing plate of the present invention; Figure 6 It is a partial cross-sectional view of the present invention; Figure 7 It is a schematic diagram of the internal structure of the installation box of the present invention; Figure 8 It is a side view of the internal structure of the installation box of the present invention; Fig. 9 It is a schematic diagram of the overall structure of the rotating plate of the present invention.

[0019] The numbers in the figure represent: 1. Hanger; 11. Guide plate; 1101. Guide through hole; 12. Mounting box; 13. Driving motor; 14. Limit roller; 15. Limit block; 151. Elastic slide bar; 16. Gear set; 17. Connecting plate; 2. U-shaped pressing plate; 201. mounting through hole; 21. rotating plate; 2101. rotating connecting through hole; 2102. bending groove; 211. sliding shaft; 212. protruding block; 213. bending section; 214. vertical section; 22. sliding rod; 23. fixing block; 24. elastic member; 3. Hoisting assembly; 31. Rotating roller; 32. Fixed roller; 33. Hoisting rope; 34. Driving shaft; 35. Hook; 4. Pressing assembly; 41. Pressing rod; 42. Lifting frame; 421. Extending rod; 43. Spring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] Example: A hoisting structure for highway construction, such as Figure 1 - Figure 6 As shown, it includes a hanger 1, with a lifting port fixedly installed on the top, and the lifting port is used to connect with a hook of a lifting device; The U-shaped pressing plate 2 is slidably mounted just below the hanger 1 and is used to limit the two ends of the hoisted object; Four groups of lifting components 3 are symmetrically installed on the sides of the hanger 1 in pairs, and each group of lifting components 3 includes a rotating roller 31 located in the middle of the hanger 1 and a fixed roller 32 located at the end of the hanger 1. A lifting rope 33 is connected between each group of rotating rollers 31 and the fixed rollers 32, and a hook 35 is slidably installed on the lifting rope 33. A driving motor 13 is fixedly installed on the hanger 1 to drive the rotating roller 31 to rotate so that the lifting rope 33 is wrapped around the rotating roller 31.

[0023] In the present invention, by installing a U-shaped pressing plate 2 under the hanger 1, the plates can be prevented from sliding toward both ends during the lifting process, so that the plates are more stably restricted under the U-shaped pressing plate 2, and lifting components 3 are arranged on both sides of the U-shaped pressing plate 2. In the process of lifting the stacked plates, the lifting equipment is first driven to move the hanger 1 to the top of the stacked plates and descend to a specified height (a position slightly higher than the plates), and then the driving motor 13 is turned on to drive the rotating roller 31 to rotate to release the lifting rope 33, so that the hook 35 located on the lifting rope 33 can be hung at the lifting position at the bottom of the stacked plates (it can be a steel wire rope, or a steel plate with a side for inserting the hook 35 can be selected), and then the driving motor 13 is rotated in the opposite direction, so that the stacked plates are pulled upward to the inside of the U-shaped pressing plate 2, and the two ends of the U-shaped pressing plate 2 can limit the plates, and the U-shaped pressing plate 2 has pressure on the top of the plates to reduce the shaking of the plates during the lifting process, and then the lifting equipment can be driven to lift the hanger 1 and the plates below to the specified position.

[0024] It should be noted that since the hook 35 is slidably installed on the lifting rope 33, it can slide to any position on the lifting rope 33 for hanging during use, and plates of different sizes can be lifted. In addition, since the lifting of the plate from the ground and the lowering of the plate to the ground are both operated by controlling the drive motor 13 (no lifting equipment is required to lift or lower the plate directly from the ground), the construction personnel can control the lifting or lowering of the plate more smoothly on the ground, and avoid damaging or bumping the plate during the lifting or lowering process (the perspective of the lifting equipment makes it difficult to fully observe the ground conditions).

[0025] Furthermore, if Figure 6 and Figure 7 As shown, a mounting box 12 is fixedly installed in the middle of the hanger 1, the driving motor 13 is fixedly installed inside the mounting box 12, a gear set 16 is fixedly installed inside the mounting box 12, two driving shafts 34 are rotatably installed inside the mounting box 12, the two driving shafts 34 are respectively located on both sides of the driving motor 13 and are connected to the driving motor 13 through the gear set 16, both ends of the driving shaft 34 are rotatably extended out of the mounting box 12 and connected to the rotating roller 31, and the driving motor 13 drives the rotating roller 31 to rotate through the driving shaft 34.

[0026] Among them, by fixing the driving motor 13 inside the hanger 1, and making the driving motor 13 drive the rotating rollers 31 to rotate synchronously through two driving shafts 34, the two ends and both sides of the plate can be raised to the same height at the same time during the lifting process, which can reduce the shaking of the plate caused by the lifting tilt.

[0027] Furthermore, if Figure 5 As shown, the U-shaped pressure plate 2 opens downward, and a plurality of sliding rods 22 are fixedly installed above the U-shaped pressure plate 2, and a plurality of fixed blocks 23 are fixedly installed on the hanger 1. When the U-shaped pressure plate 2 is installed under the hanger 1, each of the sliding rods 22 slides through each fixed block 23 respectively, and an elastic member 24 is mounted on the sliding rods 22 for driving the U-shaped pressure plate 2 to move downward relative to the hanger 1.

[0028] Among them, by arranging a sliding rod 22 above the U-shaped pressure plate 2, the U-shaped pressure plate 2 is slidably connected to the hanger 1 through the sliding rod 22, and by arranging an elastic member 24, a distance is maintained between the U-shaped pressure plate 2 and the hanger 1 under normal conditions. During the lifting process, the top of the stacked plates rests on the top inner wall of the U-shaped pressure plate 2, so that the U-shaped pressure plate 2 has a certain pressure on the top of the stacked plates, which can make each layer of plates have a greater friction force and reduce the relative sliding between each plate. In addition, since the total pressure required in the process of compressing multiple elastic members 24 per unit distance is quantitative, each time the U-shaped pressure plate 2 is only moved upward to the same position during each lifting process, the pressure of the U-shaped pressure plate 2 on the stacked plates can be clearly understood each time (the pressure required to compress the plates can be controlled by controlling the rising position of the U-shaped pressure plate 2 according to the pressing needs of different plates).

[0029] Furthermore, if Figure 6 and Figure 7 As shown, the two driving shafts 34 are coaxially fixedly mounted with a limiting roller 14 , the outer circumferential surface of the limiting roller 14 is provided with a plurality of limiting protrusions distributed in a circular array, and a limiting block 15 for clamping the limiting roller 14 is provided between the two driving shafts 34 .

[0030] Among them, by fixing the limit roller 14 on the driving shaft 34 and setting a limit protrusion on the outside of the limit roller 14, after the driving shaft 34 rotates to lift the plate into place (initial lifting, just lift the plate off the ground, at this time the lifting equipment has not started lifting), by controlling the limit block 15 to get stuck on the outside of the limit roller 14, it is ensured that the driving shaft 34 does not rotate during the lifting process, which can prevent the plate fixed under the hanger 1 from loosening during the lifting process (equivalent to adding a layer of safety measures).

[0031] Furthermore, if Figure 7 and Figure 8 As shown, an elastic slide bar 151 is fixedly installed below the limit block 15, and the lower end of the elastic slide bar 151 passes through the bottom of the installation box 12 and is located above the U-shaped pressure plate 2. Arc-shaped limit grooves are provided on both sides of the limit block 15, and a groove for clamping on the limit protrusion is provided on the inner wall of the limit groove. When the U-shaped pressure plate 2 moves upward to the top, the upper end surface of the U-shaped pressure plate 2 drives the limit block 15 upward to press against the outer side of the limit roller 14.

[0032] Among them, by fixing the elastic slide bar 151 under the limit block 15, and making the bottom of the elastic slide bar 151 pass through the bottom of the installation box 12 and be located above the U-shaped pressure plate 2, during the lifting process (initial lifting), the upward movement of the U-shaped pressure plate 2 drives the elastic slide bar 151 to move upward, so that the limit block 15 is stably stuck on the outer side of the limit roller 14, and the drive shaft 34 is firmly fixed.

[0033] Furthermore, if Figure 6 , Figure 7 and Figure 8 As shown, a pressing assembly 4 for pressing down the limit block 15 is installed above the installation box 12, and the pressing assembly 4 includes a lifting frame 42 which is slidably installed above the installation box 12, and the lower end of the lifting frame 42 is located directly above the limit block 15. A spring 43 for driving the lifting frame 42 to move upward is arranged above the lifting frame 42, and an extension rod 421 is arranged above the lifting frame 42, and the upper part of the extension rod 421 passes through the connecting plate 17 in the middle part of the hanger 1, and the pressing rod 41 for pressing the upper part of the extension rod 421 is rotatably installed on the connecting plate 17.

[0034] Among them, the lifting frame 42 is installed by sliding up and down above the installation box 12, and a pressing rod 41 is arranged above the lifting frame 42. In the initial state, the lifting frame 42 is located at the highest point driven by the spring 43. By pressing the pressing rod 41 downward, the lifting frame 42 can be driven to move downward. After the stacked plates are moved to the specified position, the pressing rod 41 is pressed downward to move the lifting frame 42 downward, so that the bottom of the lifting frame 42 abuts against the top of the limit block 15, driving the limit block 15 to move downward (the elastic sliding rod 151 under the limit block 15 can be retracted in a short distance when the downward pressure is relatively large, which belongs to the common elastic rod in the prior art and will not be described in detail herein), so that the limit block 15 cancels the restriction on the limit roller 14, allowing the drive shaft 34 to rotate.

[0035] Furthermore, if Figure 1 , Figure 2 and Figure 5 As shown, a plurality of mounting holes 201 are provided at the bending parts at both ends of the U-shaped pressure plate 2, and a rotating plate 21 is rotatably installed inside each of the mounting holes 201. The rotating plate 21 is used to fix the material inside the U-shaped pressure plate 2, and a guide plate 11 is provided on the hanger 1 for driving the lower end of the rotating plate 21 to rotate toward the inside of the U-shaped pressure plate 2.

[0036] Furthermore, if Figure 5 and Fig. 9 As shown, the rotating plate 21 includes a bending section 213 and a vertical section 214, and a rotating connecting through hole 2101 for rotationally connecting with the U-shaped pressure plate 2 is provided at the bending portion of the bending section 213, and a sliding shaft 211 is fixedly installed on the top of the vertical section 214. A guide through hole 1101 is obliquely provided on the guide plate 11, and the sliding shaft 211 is slidably installed inside the guide through hole 1101. During the upward movement of the U-shaped pressure plate 2, the guide through hole 1101 guides the sliding shaft 211 to move in a direction away from the middle of the hanger 1, so that the lower end of the rotating plate 21 rotates toward the inside of the U-shaped pressure plate 2.

[0037] Among them, by rotatably installing the rotating plate 21 at both ends of the U-shaped pressing plate 2, and arranging the guide plate 11 on the hanger 1 to drive the rotating plate 21 to rotate, the lower end of the rotating plate 21 can be rotated toward the plate inside the U-shaped pressing plate 2 during the upward movement of the U-shaped pressing plate 2, so that the rotating plate 21 can more firmly squeeze and fix the two ends of the hoisted plate. In addition, since the rotating plate 21 is provided with multiple groups (such as Figure 5 As shown in the figure, the rotating plates 21 are elastic. When clamping a plate with an irregular end, each rotating plate 21 can be slightly deformed according to the different sizes of the plate end, so as to more completely fix and support each position of the plate end.

[0038] Furthermore, if Fig. 9 As shown, a bending groove 2102 is provided on the bending section 213 of the rotating plate 21 , and the bending groove 2102 is located at the end surface of the rotating plate 21 away from the middle of the hanger 1 , and a protrusion 212 is fixedly provided on the end surface of the rotating plate 21 facing the middle of the hanger 1 .

[0039] Among them, by setting a bending groove 2102 on the back of the rotating plate 21, the lower end of the rotating plate 21 can be deformed more easily when it is pressed against the plate, so that the rotating plate 21 can provide more upward supporting force to the plate (achieved by the protruding block 212).

[0040] Working principle: in the process of hoisting the stacked plates, the lifting equipment is first driven to move the hanger 1 to the top of the stacked plates and descend to the specified height (slightly higher than the plates), then the driving motor 13 is turned on to drive the rotating roller 31 to rotate to release the hoisting rope 33, so that the hook 35 on the hoisting rope 33 can be hung at the lowest lifting position of the stacked plates, and then the driving motor 13 is rotated in the opposite direction to pull the stacked plates upward to the inside of the U-shaped pressing plate 2. In this process, the plates will squeeze the inner wall of the U-shaped pressing plate 2 and drive the U-shaped pressing plate 2 to move upward synchronously. When the U-shaped pressing plate 2 is against the elastic sliding bar 151 under the limit block 15, the limit block 15 will be driven to move up and clamp the driving shaft 34. In addition, when the U-shaped pressing plate 2 moves upward, it will also drive the lower end of the rotating plate 21 to rotate toward the inside of the U-shaped pressing plate 2, so as to more firmly fix the plates inside the U-shaped pressing plate, and then the lifting equipment can be driven to hoist the hanger 1 and the plates below to the specified position.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hoisting structure for highway construction, characterized in that: include: A hanger (1) having a hanging opening fixedly mounted on the top, the hanging opening being used to be connected to a hook of a lifting device; A U-shaped pressure plate (2) is slidably mounted directly below the hanger (1) and is used to limit the positions of both ends of the hoisted object; Four groups of lifting components (3) are symmetrically mounted on the sides of the hanger (1), each group of lifting components (3) comprises a rotating roller (31) located in the middle of the hanger (1) and a fixed roller (32) located at the end of the hanger (1), a lifting rope (33) is connected between each group of rotating rollers (31) and the fixed rollers (32), a lifting hook (35) is slidably mounted on the lifting rope (33), and a driving motor (13) is fixedly mounted on the hanger (1) for driving the rotating rollers (31) to rotate so that the lifting rope (33) is wound around the rotating rollers (31).

2. A hoisting structure for highway construction according to claim 1, characterized in that: A mounting box (12) is fixedly installed in the middle of the hanger (1), the drive motor (13) is fixedly installed inside the mounting box (12), a gear set (16) is fixedly installed inside the mounting box (12), two drive shafts (34) are rotatably installed inside the mounting box (12), the two drive shafts (34) are respectively located on both sides of the drive motor (13) and are transmission-connected to the drive motor (13) through the gear set (16), both ends of the drive shaft (34) are rotatably extended out of the mounting box (12) and are connected to the rotating roller (31), and the drive motor (13) drives the rotating roller (31) to rotate through the drive shaft (34).

3. A hoisting structure for highway construction according to claim 2, characterized in that: The U-shaped pressure plate (2) opens downwards, a plurality of sliding rods (22) are fixedly mounted above the U-shaped pressure plate (2), a plurality of fixed blocks (23) are fixedly mounted on the hanger (1), and when the U-shaped pressure plate (2) is mounted below the hanger (1), each of the sliding rods (22) slides through each of the fixed blocks (23), and an elastic member (24) is mounted on the sliding rods (22) for driving the U-shaped pressure plate (2) to move downward relative to the hanger (1).

4. A hoisting structure for highway construction according to claim 3, characterized in that: A limiting roller (14) is coaxially fixedly mounted on both of the two drive shafts (34); a plurality of limiting protrusions are distributed in a circular array on the outer circumferential surface of the limiting roller (14); and a limiting block (15) for clamping the limiting roller (14) is provided between the two drive shafts (34).

5. A hoisting structure for highway construction according to claim 4, characterized in that: An elastic slide bar (151) is fixedly installed below the limit block (15), and the lower end of the elastic slide bar (151) passes through the bottom of the installation box (12) and is located above the U-shaped pressure plate (2). Arc-shaped limit grooves are provided on both sides of the limit block (15), and a groove for clamping on the limit protrusion is provided on the inner wall of the limit groove. When the U-shaped pressure plate (2) moves upward to the top, the upper end surface of the U-shaped pressure plate (2) drives the limit block (15) to press upward against the outer side of the limit roller (14).

6. A hoisting structure for highway construction according to claim 5, characterized in that: A pressing assembly (4) for pressing down the limit block (15) is installed above the installation box (12), and the pressing assembly (4) comprises a lifting frame (42) slidably installed above the installation box (12), the lower end of the lifting frame (42) being located directly above the limit block (15), a spring (43) for driving the lifting frame (42) to move upward is arranged above the lifting frame (42), and a protruding rod (421) is arranged above the lifting frame (42), the top of the protruding rod (421) passes through a connecting plate (17) in the middle of the hanger (1), and a pressing rod (41) for pressing the top of the protruding rod (421) is rotatably installed on the connecting plate (17).

7. A hoisting structure for highway construction according to claim 6, characterized in that: A plurality of mounting through holes (201) are provided at the bends at both ends of the U-shaped pressing plate (2), a rotating plate (21) is rotatably mounted inside each of the mounting through holes (201), the rotating plate (21) being used to fix the material inside the U-shaped pressing plate (2), and a guide plate (11) is provided on the hanger (1) for driving the lower end of the rotating plate (21) to rotate toward the inside of the U-shaped pressing plate (2).

8. A hoisting structure for highway construction according to claim 7, characterized in that: The rotating plate (21) comprises a bent section (213) and a vertical section (214); a rotating connection through hole (2101) for rotationally connecting with the U-shaped pressure plate (2) is provided at the bent portion of the bent section (213); a sliding shaft (211) is fixedly installed at the top of the vertical section (214); a guide through hole (1101) is obliquely provided on the guide plate (11); the sliding shaft (211) is slidably installed inside the guide through hole (1101); when the U-shaped pressure plate (2) moves upward, the guide through hole (1101) guides the sliding shaft (211) to move in a direction away from the middle of the hanger (1), so that the lower end of the rotating plate (21) rotates toward the inside of the U-shaped pressure plate (2).

9. A hoisting structure for highway construction according to claim 8, characterized in that: A bending groove (2102) is provided on the bending section (213) of the rotating plate (21), and the bending groove (2102) is located at the end surface of the rotating plate (21) away from the middle of the hanger (1), and a protruding block (212) is fixedly provided on the end surface of the rotating plate (21) facing the middle of the hanger (1).

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