Cement product hoisting device

Abstract

The utility model discloses a cement product hoisting device, which relates to the technical field of hoisting devices and comprises a hoisting fixing rod and a hoisting screw movably mounted in the hoisting fixing rod. According to the utility model, the plurality of second brackets drive the protection plates to perform angle deflection, so that the distance between two corresponding protection plates is slightly larger than a cylindrical cement product, the distance can be accurately controlled to be 101%-103% of the diameter of the product, too tight clamping or loosening is avoided, the protection plates cover the whole area of the bottom end of the product, and the production efficiency is improved. Local impact or abrasion in the conveying process is prevented, supporting force of the protection plate is dispersed to multiple contact points at the bottom end of the product, vibration and deviation risks are reduced, the supporting structure can adapt to products of different diameters, cylindrical cement products are subjected to bottom end supporting protection in the vertical moving process, the protection plate is attached to the bottoms of the cement products in advance, and the protection effect is improved. And cracks or edge breakage caused by direct stress of the lifting hook is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hoisting device technology, specifically a hoisting device for cement products. Background Technology

[0002] The cylindrical cement product hoisting device is welded from high-strength steel and equipped with an adjustable span beam to meet the hoisting needs of cylindrical cement products of different diameters, such as pipe piles and culverts. The space inside the excavated well is narrow, and the cylindrical cement products need to be placed vertically and precisely for installation. The cylindrical structure has a natural geometric advantage, which can evenly distribute the pressure of the surrounding soil and water, reduce stress concentration, and avoid cracks or deformation caused by uneven stress. The well cylinder needs to withstand lateral pressure in soil or groundwater environment, and the circular design can effectively resist such loads.

[0003] When lifting cylindrical cement products, existing cement product hoisting equipment uses a bidirectional screw to drive a clamping plate to compress and fix the inner wall of the cylinder. However, there is no support structure at the bottom, causing the bottom of the cylinder to be suspended. During the hoisting process, the bottom is prone to local stress concentration due to its own weight and inertia, especially in thin-walled or brittle cement products such as concrete pipe piles, which can cause bottom cracking or deformation. If there are bumps or sudden stops during the hoisting process, the lack of a buffer protection structure at the bottom causes the impact force to be directly transmitted to the bottom surface of the cylinder. When the road is uneven or the transportation environment is harsh, the components without bottom support are prone to breakage or corner chipping due to vehicle bumps. Utility Model Content

[0004] This utility model provides a cement product hoisting device, which has the advantage of supporting and protecting the bottom of cylindrical cement products, thus solving the problem that cement product hoisting devices only compress and fix the inside of cylindrical cement products without supporting and protecting the bottom.

[0005] To achieve the purpose of supporting and protecting the bottom end of cylindrical cement products in a cement product hoisting device, this utility model provides the following technical solution: A cement product hoisting device includes a hoisting fixed rod and a hoisting screw movably installed inside the hoisting fixed rod. A hoisting movable rod is movably installed inside the hoisting fixed rod. A crank is movably installed on the outer surface of the hoisting screw. Two inner pressing fixing components are installed on the outer surface of the hoisting screw. A support and protection component is installed on the outer surface of the hoisting movable rod. The support and protection component includes a fixed ring and a movable ring. The fixed ring is installed on the outer surface of the hoisting movable rod, and the movable ring is installed on the outer surface of the hoisting movable rod. Both the fixed ring and the movable ring have circular rings installed inside. A first bracket is movably installed evenly on the outer surface of one circular ring, and a second bracket is movably installed evenly on the outer surface of the other circular ring. A rotating column is installed inside the second bracket. The outer surface of the rotating column is in movable contact with the inner surface of the first bracket. Protective plates are installed on the outer surfaces of several second brackets.

[0006] As a preferred embodiment of this utility model, a hydraulic rod one is installed on the outer surface of the hoisting fixing rod, and one end surface of the output end of the hydraulic rod one is fixedly connected to one end surface of the hoisting movable rod. A hydraulic rod two is installed on the outer surface of the hoisting movable rod, and one end surface of the output end of the hydraulic rod two is fixedly connected to one end surface of the movable ring.

[0007] As a preferred technical solution of this utility model, the inner pressing fixing assembly includes two spiral sleeves and four lifting brackets. The two spiral sleeves are movably installed on the outer surface of the lifting screw. Lifting brackets are movably installed on both ends of the two spiral sleeves. Rotating columns are movably installed inside the four lifting brackets. Base plates are installed on the outer surfaces of the two rotating columns.

[0008] As a preferred embodiment of this utility model, a top plate is installed on the outer surface of each of the two base plates, and a rubber plate is installed on the outer surface of each of the two top plates.

[0009] Compared with the prior art, the present invention provides a cement product hoisting device, which has the following beneficial effects:

[0010] 1. This cement product hoisting device uses several second supports to rotate the protective plates at an angle, making the distance between two corresponding protective plates slightly larger than that of the cylindrical cement product. The distance can be precisely controlled to 101%-103% of the product diameter to avoid excessive clamping or loosening. The protective plates cover the entire bottom area of ​​the product to prevent local impact or wear during transportation. The supporting force of the protective plates is distributed to multiple contact points at the bottom of the product, reducing the risk of vibration and displacement. The support structure can adapt to products of different diameters. The cylindrical cement product is supported and protected at the bottom during vertical movement. The protective plates are pre-fitted to the bottom of the cement product to avoid cracks or chipping caused by direct force on the hook.

[0011] 2. This cement product hoisting device uses a base plate to drive a top plate and a rubber plate to press and fix the inner surface of the cylindrical cement product. The elastic deformation characteristics of the rubber plate allow it to form surface contact with the inner wall of the cylindrical cement product, dispersing local stress. The rubber material provides a high coefficient of friction, preventing the product from sliding during hoisting and avoiding damage to the inner wall caused by rigid contact. The internal support structure can adaptively adjust with the changes in the posture of the product to ensure stable fixation throughout the process, thus facilitating the placement of the cylindrical cement product into the excavated cavity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the extrusion inner fixing component of this utility model;

[0014] Figure 3 This is a schematic diagram of the overall structure of the support and protection component of this utility model.

[0015] In the diagram: 1. Lifting screw; 2. Lifting fixing rod; 3. Lifting bracket; 4. Spiral sleeve; 5. Top plate; 6. Rubber plate; 7. Handle; 8. Base plate; 9. Rotating column one; 10. Fixing ring; 11. Circular ring; 12. First bracket; 13. Second bracket; 14. Rotating column two; 15. Movable ring; 16. Lifting movable rod; 17. Hydraulic rod one; 18. Protective plate; 19. Hydraulic rod two. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3This utility model discloses a cement product hoisting device, including a hoisting fixed rod 2 and a hoisting screw 1 movably installed inside the hoisting fixed rod 2. A hoisting movable rod 16 is movably installed inside the hoisting fixed rod 2. A crank handle 7 is movably installed on the outer surface of the hoisting screw 1. Two inner compression fixing components are installed on the outer surface of the hoisting screw 1. A support and protection component is installed on the outer surface of the hoisting movable rod 16. The support and protection component includes a fixed ring 10 and a movable ring 15. The fixed ring 10 is installed on the outer surface of the hoisting movable rod 16, and the movable ring 15 is installed on the outer surface of the hoisting movable rod 16. Both the fixed ring 10 and the movable ring 15 have circular rings 11 installed inside. A first bracket 12 is movably installed evenly on the outer surface of one circular ring 11, and a second bracket 13 is movably installed evenly on the outer surface of the other circular ring 11. A rotating column 14 is installed inside the second bracket 13. The outer surface of the rotating column 14 is flush with the first bracket 1. The inner surface of the 2nd support is in active contact with the outer surface of several second supports 13. Protective plates 18 are installed on the outer surface of the hoisting fixed rod 2. A hydraulic rod 17 is installed on the outer surface of the hoisting fixed rod 2. One end of the output end of the hydraulic rod 17 is fixedly connected to one end of the hoisting movable rod 16. A hydraulic rod 29 is installed on the outer surface of the hoisting movable rod 16. One end of the output end of the hydraulic rod 219 is fixedly connected to one end of the movable ring 15. Several second supports 13 drive the protective plates 18 to deflect at an angle, so that the distance between the corresponding two protective plates 18 is slightly larger than that of the cylindrical cement product. Then, the controller controls the hydraulic rod 17 to work and drive the hoisting movable rod 16 to move inward, so that several protective plates 18 support and protect the bottom surface of the cylindrical cement product. During the vertical movement of the cylindrical cement product, the bottom support and protection are provided. The protective plates 18 are attached to the bottom of the cement product in advance to avoid cracks or chipping caused by direct force on the hook.

[0018] The inner fixing assembly for extrusion includes two spiral sleeves 4 and four lifting brackets 3. The two spiral sleeves 4 are movably installed on the outer surface of the lifting screw 1. Lifting brackets 3 are movably installed on both ends of the two spiral sleeves 4. Rotating columns 9 are movably installed inside the four lifting brackets 3. Base plates 8 are installed on the outer surfaces of the two rotating columns 9. Top plates 5 are installed on the outer surfaces of the two base plates 8. Rubber plates 6 are installed on the outer surfaces of the two top plates 5. The base plates 8 drive the top plates 5 and rubber plates 6 to extrude and fix the inner surface of the cylindrical cement product. The elastic deformation characteristics of the rubber plates 6 allow them to form surface contact with the inner wall of the cylindrical cement product, dispersing local stress. The rubber material provides a high coefficient of friction, preventing the product from sliding during lifting and avoiding damage to the inner wall caused by rigid contact. The inner support structure can adaptively adjust with the changes in the posture of the product to ensure stable fixation throughout the process, thus facilitating the placement of the cylindrical cement product into the excavated cavity.

[0019] The working principle and usage process of this utility model are as follows: When it is necessary to install a cylindrical cement product, the cylindrical cement product needs to be installed into the excavated well cavity. The lifting screw 1 and the lifting fixing rod 2 are inserted into the cylindrical cement product. First, the controller controls the hydraulic rod 17 to move on the construction site. The hydraulic rod 17 pushes the lifting movable rod 16 outward. Then, the controller controls the hydraulic rod 19 to push the movable ring 15. The movable ring 15 drives the circular ring 11 to move. The circular ring 11 compresses several first supports 12. The first supports 12 are located outside the rotating column 14 and the second support 13. The angle is deflected, and the second bracket 13 is deflected at another angle in the ring 11. Several second brackets 13 drive the protective plates 18 to deflect at an angle, so that the distance between the corresponding two protective plates 18 is slightly larger than that of the cylindrical cement product. Then, the controller controls the hydraulic rod 17 to work and drive the hoisting rod 16 to move inward, so that several protective plates 18 support and protect the bottom surface of the cylindrical cement product. During the vertical movement of the cylindrical cement product, the bottom end is supported and protected. The protective plates 18 are attached to the bottom of the cement product in advance to avoid cracks or chipping caused by direct force on the hook.

[0020] Furthermore, the lifting screw 1 is driven to rotate inside the lifting fixing rod 2 by the crank handle 7. The lifting screw 1 and the spiral sleeve 4 cooperate with each other, so that the spiral sleeve 4 drives the lifting bracket 3 to compress. The lifting bracket 3 is movably installed on the spiral sleeve 4 and the rotating column 9, thereby causing the bottom plate 8 to expand outward. The bottom plate 8 drives the top plate 5 and the rubber plate 6 to compress and fix the inner surface of the cylindrical cement product. The elastic deformation characteristics of the rubber plate 6 make it form a surface contact with the inner wall of the cylindrical cement product, dispersing local stress. The rubber material provides a high coefficient of friction to prevent the product from sliding during the lifting process, while avoiding damage to the inner wall caused by rigid contact. The internal support structure can adaptively adjust with the changes in the posture of the product to ensure stable fixation throughout the process, thus facilitating the placement of the cylindrical cement product into the excavated cavity.

[0021] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cement product hoisting device, comprising a hoisting fixed rod (2) and a hoisting screw (1) movably installed inside the hoisting fixed rod (2), wherein a hoisting movable rod (16) is movably installed inside the hoisting fixed rod (2), and a crank handle (7) is movably installed on the outer surface of the hoisting screw (1), characterized in that: The outer side surface of the lifting screw rod (1) is provided with two extrusion inner side fixing assemblies, the outer side surface of the lifting movable rod (16) is provided with a support protection assembly, the support protection assembly comprises a fixed ring (10) and a movable ring (15), the fixed ring (10) is installed on the outer side surface of the lifting movable rod (16), the movable ring (15) is installed on the outer side surface of the lifting movable rod (16), the inner side surface of the fixed ring (10) and the inner side surface of the movable ring (15) are provided with a circular ring (11), the outer side surface of one of the circular rings (11) is uniformly and movably provided with a first support (12), the outer side surface of the other circular ring (11) is uniformly and movably provided with a second support (13), the inner side surface of the second support (13) is provided with a rotating column two (14), the outer side surface of the rotating column two (14) is in movable contact with the inner side surface of the first support (12), the outer side surface of the second support (13) is provided with a protection plate (18).

2. A device for hoisting a cementitious article according to claim 1, wherein: The outer side surface of the lifting fixed rod (2) is provided with a hydraulic rod one (17), one end surface of the output end of the hydraulic rod one (17) is fixedly connected with one end surface of the lifting movable rod (16), the outer side surface of the lifting movable rod (16) is provided with a hydraulic rod two (19), one end surface of the output end of the hydraulic rod two (19) is fixedly connected with one end surface of the movable ring (15).

3. A device for hoisting a cementitious article according to claim 2, wherein: The extrusion inner side fixing assembly comprises two spiral sleeves (4) and four lifting supports (3), the two spiral sleeves (4) are movably installed on the outer side surface of the lifting screw rod (1), the two ends of the two spiral sleeves (4) are movably provided with the lifting supports (3), the inner side surface of the four lifting supports (3) is movably provided with a rotating column one (9), the outer side surface of the two rotating columns is provided with a bottom plate (8).

4. A device for hoisting a cementitious article according to claim 3, wherein: The outer side surface of the two bottom plates (8) is provided with a top plate (5), the outer side surface of the two top plates (5) is provided with a rubber plate (6).

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