Prefabricated pipe culvert hoisting device

Abstract

The utility model belongs to the field of pipe culvert hoisting, and particularly relates to a prefabricated pipe culvert hoisting device which is characterized in that main lifting lugs are fixedly arranged at the two opposite ends of a main beam in the axial direction respectively, and main lifting appliances are connected to the main lifting lugs through steel wire ropes; the two opposite sides of the middle of the main beam are each fixedly provided with an auxiliary lifting lug, and the auxiliary lifting lugs are connected with auxiliary lifting hooks through chain blocks. When the prefabricated pipe culvert hoisting device is used for hoisting a pipe culvert, the pipe culvert can be stable during hoisting through cross-shaped balanced hoisting of four hoisting points, and after the pipe culvert leaves the ground, the pipe culvert is in a safe and stable state during upward, downward and translation in the air; and in the whole operation process, the prefabricated pipe joints cannot be damaged.

Description

Technical Field

[0001] The present application relates to the technical field of pipe culvert hoisting, and in particular to a prefabricated pipe culvert hoisting device. Background Art

[0002] Precast concrete pipe culverts, as an important building material, serve as the backbone of national infrastructure development. With the rapid development of urban underground infrastructure, urbanization, sponge city construction, and urban integrated pipeline corridors in my country, cement concrete pipe culverts are increasingly oriented toward larger diameters, higher performance, trenchless construction, corrosion resistance, composite construction, and flexibility. Consequently, large (and extra-large) diameter pipe culverts are increasingly used in trenchless applications. Large (and extra-large) diameter concrete pipe culverts are not only large in size but also extremely heavy, making them difficult to achieve balanced lifting and effective protection using conventional hoisting techniques.

[0003] When traditional steel wire ropes are used for direct lifting, there are quality risks caused by rope wear on concrete corners and embedded parts, and lifting safety risks caused by wear and breakage of steel wire ropes at the turning points of lifting. When large (super-large) diameter concrete culverts are lifted at two points using a conventional "pole", although they are lifted through the lifting holes reserved in the pipe sections, it is difficult to ensure that the pipe sections can remain horizontal during the lifting and lowering process. In other words, it is difficult to avoid bumps and damage caused by the tilting of the pipe sections during this process. Utility Model Content

[0004] An embodiment of the present application provides a prefabricated pipe culvert hoisting device, which is intended to ensure that the pipe sections are in a horizontal state during hoisting, and to prevent the pipe sections from tilting during the hoisting process, causing bumps and damage.

[0005] To achieve the above-mentioned objectives, the present application provides a prefabricated pipe culvert lifting device, comprising a main beam, wherein an external lifting lug is fixedly provided in the middle of the main beam, and the external lifting lug is used for lifting with lifting equipment; a main lifting lug is fixedly provided at each of the opposite ends of the main beam in the axial direction, and a main lifting tool is connected to the main lifting lug through a steel wire rope, and the main lifting tool comprises a connecting plate connected to an end of the steel wire rope away from the main lifting lug and a plug-in shaft vertically fixed on the connecting plate, and the plug-in shaft is adapted to the embedded lifting hole on the pipe culvert, and the two main lifting tools are used to be respectively inserted into the two embedded lifting holes on the opposite sides of the peripheral side wall of the pipe culvert; an auxiliary lifting lug is fixedly provided on each of the opposite sides of the middle of the main beam, and an auxiliary lifting hook is connected to the auxiliary lifting lug through a hand hoist, and the two auxiliary hooks are used to be respectively hooked on the opposite ends of the pipe culvert in the axial direction.

[0006] Optionally, one end of the steel wire rope is connected to the main lifting lug via a shackle, a connecting hole is provided on the connecting plate, and the other end of the steel wire rope is connected to the connecting hole on the connecting plate via another shackle.

[0007] Optionally, reinforcing ribs are provided between the main lifting lug and the main beam.

[0008] Optionally, the main beam includes an I-beam and four strip steel plates welded around the I-beam.

[0009] Optionally, the upper hook of the hand chain hoist is connected to the auxiliary lifting ear through a shackle, the auxiliary hook has a mounting hole, and the lifting hook of the hand chain hoist is connected to the mounting hole on the auxiliary hook through another shackle.

[0010] Optionally, the auxiliary hook includes an upper rod, a lower rod and a connecting rod, the upper rod and the lower rod are arranged at intervals, one end of the upper rod and one end of the lower rod are fixedly connected by the connecting rod, and the mounting hole is provided at the end of the upper rod away from the connecting rod.

[0011] Optionally, the upper rod, the lower rod and the connecting rod are an integrated structure.

[0012] The beneficial effect of the prefabricated pipe culvert lifting device provided by the present application is that: compared with the prior art, the prefabricated pipe culvert lifting device of the present application is respectively fixed with a main lifting lug at the opposite ends of the main beam in the axial direction, and the main lifting lug is connected to the main lifting device via a wire rope; a secondary lifting lug is respectively fixed on the opposite sides of the middle of the main beam, and the secondary lifting lug is connected to an auxiliary lifting hook via a hand hoist. When in use, the lifting equipment (such as a crane, a hoist, etc.) is in place, the hook of the lifting equipment passes through the external lifting lug in the middle of the main beam, and the hook of the lifting equipment is slowly lifted. When the plug-in shafts in the two main lifting devices of the prefabricated pipe culvert lifting device can be respectively inserted into the pre-buried lifting holes on the opposite sides of the outer peripheral wall of the pipe culvert, the lifting of the hook of the lifting equipment is stopped. Manually insert the splice shafts in the two main hoists into the pre-buried lifting holes on the pipe culvert, and then slowly lift the device. When the wire rope connected to the main hoist is stressed but the pipe culvert has not left the ground, stop lifting the device and arrange workers to fix the auxiliary hooks on the two hand hoists to the two ends of the pipe culvert. At the same time, pull the chain of the hand hoist to fix the chain after it is stressed, and finally continue to lift it with the lifting equipment. The prefabricated pipe culvert lifting device is used to lift the pipe culvert. Through the "cross" balanced lifting of the four lifting points, the pipe culvert can be lifted steadily during lifting. After the pipe culvert leaves the ground, it is in a "safe and stable" state when it moves up, down, and horizontally in the air. In the entire operation process, the prefabricated pipe section will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] in:

[0015] Figure 1 1 is a schematic structural diagram of a prefabricated pipe culvert hoisting device according to an embodiment of the present application;

[0016] Figure 2 yes Figure 1 AA cross-sectional structural diagram in FIG;

[0017] Figure 3 This is a schematic diagram of a prefabricated pipe culvert lifting device shown in one embodiment of the present application when lifting a pipe culvert.

[0018] Description of main component symbols:

[0019] 10. Pipe culvert; 11. Pre-buried lifting hole;

[0020] 100, main beam; 110, external lifting eye; 120, main lifting eye; 130, auxiliary lifting eye;

[0021] 200, wire rope;

[0022] 300, main spreader; 310, connecting plate; 320, plug-in shaft; 330, rubber buffer pad;

[0023] 400, hand chain hoist;

[0024] 500, auxiliary hook; 510, upper rod; 520, lower rod; 530, connecting rod. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0026] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0029] It should also be noted that, in the embodiments of the present application, the same figure mark represents the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0030] The embodiment of the present application provides a prefabricated pipe culvert hoisting device, such as Figure 1-Figure 3 As shown, the prefabricated pipe culvert lifting device includes a main beam 100, and an external hanging eye 110 is fixedly provided at the middle of the main beam 100. The external hanging eye 110 is used for lifting equipment (such as a crane or a hoist); a main hanging eye 120 is fixedly provided at each of the opposite ends of the main beam 100 in the axial direction, and the main hanging eye 120 is connected to a main lifting device 300 through a wire rope 200. The main lifting device 300 includes a connecting plate 310 connected to the end of the wire rope 200 away from the main hanging eye 120 and a vertical fixed plate 310. The plug-in shaft 320 is fixed on the connecting plate 310, and the plug-in shaft 320 is adapted to the embedded lifting hole 11 on the culvert 10. The two main lifting devices 300 are used to be respectively inserted into the two embedded lifting holes 11 on the opposite sides of the side wall of the culvert 10; an auxiliary lifting ear 130 is fixedly provided on the opposite sides of the middle part of the main beam 100, and the auxiliary lifting ear 130 is connected to the auxiliary hook 500 through a hand hoist 400. The two auxiliary hooks 500 are used to hook on the opposite ends of the axial direction of the culvert 10 respectively.

[0031] During specific use, the lifting equipment is in place, the hook of the lifting equipment passes through the external lifting lug 110 in the middle of the main beam 100, and the hook of the lifting equipment is slowly lifted. When the plug-in shafts 320 in the two main lifting devices 300 of the prefabricated pipe culvert lifting device can be respectively inserted into the pre-buried lifting holes 11 on the opposite sides of the outer peripheral wall of the pipe culvert 10, the lifting of the hook of the lifting equipment is stopped. The plug-in shafts 320 in the two main lifting devices 300 are manually inserted into the pre-buried lifting holes 11 on the pipe culvert 10, and then the device is slowly lifted. When the wire rope 200 connected to the main lifting device 300 is stressed but the pipe culvert 10 has not left the ground, the lifting of the device is stopped, and workers are arranged to fix the auxiliary hooks 500 on the two hand hoists 400 to the axial ends of the pipe culvert 10 respectively. At the same time, the chains of the hand hoists 400 are pulled to fix the chains after they are stressed. Finally, the lifting equipment is used to continue lifting and lifting. After the prefabricated pipe culvert 10 is transferred to the designated location and landed smoothly, the hand chain hoist 400 is released, the auxiliary hooks 500 at both ends of the pipe culvert 10 are removed, and then the main lifting device 300 is removed manually using tools, thereby completing the entire disassembly work of the device.

[0032] Compared with wire rope lifting, it can effectively avoid the quality risk caused by the rope wearing the concrete edges and embedded parts when the wire rope is directly lifted, and the lifting safety risk caused by the wear and breakage of the wire rope at the turning point of the lifting; when large (super-large) diameter concrete culverts are lifted at two points with a conventional "pole", although they are lifted through the lifting holes reserved in the pipe sections, it is difficult to ensure that the pipe sections can remain horizontal during the lifting and falling process, that is, it is difficult to avoid the pipe sections from tilting during this process, causing bumps and damage.

[0033] The prefabricated pipe culvert lifting device is used to lift the pipe culvert 10. Through the "cross" balanced lifting of four lifting points, the pipe culvert 10 can be stable during lifting. After the pipe culvert 10 leaves the ground, it is in a "safe and stable" state when moving up, down and horizontally in the air; and during the entire operation, the prefabricated pipe section will not be damaged.

[0034] In one embodiment, if Figure 1 and Figure 3 As shown, in the main lifting device 300, a rubber buffer pad 330 is provided at one end of the connecting plate 310 facing the plug-in shaft 320. When the plug-in shaft 320 is manually and accurately inserted into the embedded lifting hole 11 on the side wall of the culvert 10, ensure that the rubber buffer pad 330 on the inner side of the connecting plate 310 is in close contact with the outer wall of the culvert 10, and utilize the rubber buffer pad 330 to protect the outer wall of the culvert 10.

[0035] In one embodiment, if Figure 1-Figure 3As shown, one end of the wire rope 200 is connected to the main lifting eye 120 via a shackle. A connecting hole is provided on the connecting plate 310, and the other end of the wire rope 200 is connected to the connecting hole on the connecting plate 310 via another shackle. The upper hook of the chain hoist 400 is connected to the auxiliary lifting eye 130 via a shackle. The auxiliary hook 500 has a mounting hole, and the lifting hook of the chain hoist 400 is connected to the mounting hole of the auxiliary hook 500 via another shackle.

[0036] The shackles are used to connect the wire rope 200 to the main lifting eye 120, the wire rope 200 to the main lifting device 300, the hand chain hoist 400 to the auxiliary lifting eye 130, and the hand chain hoist 400 to the auxiliary hook 500. The connection is reliable and easy to assemble and disassemble.

[0037] In one embodiment, if Figure 1-Figure 3 As shown, reinforcing ribs are provided between the main lifting lug 120 and the main beam 100 , and the reinforcing ribs are used to improve the connection strength between the main lifting lug 120 and the main beam 100 .

[0038] In one embodiment, if Figure 2 As shown, the main beam 100 includes an I-beam and four strip steel plates welded around the I-beam. This design can also improve the structural strength of the main beam 100.

[0039] In one embodiment, if Figure 2 As shown, the auxiliary hook 500 includes an upper rod 510, a lower rod 520, and a connecting rod 530. The upper rod 510 and the lower rod 520 are spaced apart, and one end of the upper rod 510 and one end of the lower rod 520 are fixedly connected by the connecting rod 530. The mounting hole is provided at the end of the upper rod 510 away from the connecting rod 530. During use, the lower rod 520 is inserted into the inner wall of the axial end of the culvert 10, and the top wall of the culvert 10 is inserted into the area between the upper rod 510 and the lower rod 520.

[0040] Preferably, the upper rod 510, the lower rod 520 and the connecting rod 530 are an integrated structure, which can be formed by cutting Q345 steel plate (50mm thick) according to the structural shape of the two ends of the culvert 10. After cutting, the burrs on the surface are polished and a layer of integral rubber sleeve is wrapped on the outside, which increases the friction during lifting and effectively cushions and protects the culvert 10.

[0041] The prefabricated pipe culvert lifting device in the embodiment of the present application can be composed of commonly used Q345 steel plates, I-beams, steel wire ropes, guide chains, etc., which are simple to process and manufacture and safe to operate.

[0042] Specifically, the main beam 100 can be welded together by double-jointing two I45b I-beams according to the structural size of the lifting culvert. In order to improve the overall stiffness of the main beam 100 and provide a reference surface for welding connections of other components, 10mm thick Q345 steel plates are used to reinforce the six sides of the double-jointed I-steel to form the main body of the steel main beam 100; groove welding that meets the requirements of the specifications is used between the steel plates.

[0043] The external lifting lug 110 is a 50mm thick Q345 steel plate cut into an "Ω" hollow arch structure. When cutting the lifting "window" in the middle of the steel plate, in order to facilitate the free "threading and hanging" of the hook of the lifting equipment, the lifting "window" is cut into a rectangular shape, and the thickness of the top is sufficient to withstand the force during safe lifting. The entire external lifting lug 110 is vertically welded to the center of the upper wing plate surface of the industrial steel. The centers of the two components overlap, and the contact surface of the steel plates is firmly welded as required by the specifications. Two reinforcing lifting steel ribs are symmetrically arranged on both sides of the external lifting lug 110 with 10mm thick Q345 steel plates.

[0044] The connecting plate 310 in the main sling 300 is made of rectangular Q345 steel plate, and the plug-in shaft 320 is made of high-strength steel rod (A 45 ), the steel rod and the steel plate are firmly welded to form an "L"-shaped lifting structure; and in the center of the top of the steel plate, a lifting hole with a diameter slightly larger than the diameter of the lifting buckle pin is also cut; a buffer rubber gasket is set on the inside of the steel plate.

[0045] This prefabricated pipe culvert lifting device is mainly used to apply two pairs of balancing forces to the large-diameter prefabricated pipe culvert during the lifting process to ensure that the pipe section is in a horizontal state during lifting. At the same time, during the lifting process, the concrete components at the ends of the pipe section are effectively protected to avoid damage and deformation during operation.

[0046] Single root Take the lifting of pipe segments in meter-high pipe construction as an example. The whole process of lifting the pipe segment from the storage area, horizontally moving it, and finally placing it on the track in the working pit, if the through-wire rope is directly used for lifting, although the lifting speed is very fast, the damage and deformation of the pipe segment concrete and steel sleeve ring are very large, there are quality risks in the later stage, and the repair cost is high. After the wire rope is worn out after multiple liftings, there is a great safety risk, so it is generally not adopted. When the conventional "pole" two-point lifting is used, it is difficult to ensure that the pipe segment is in a horizontal state, and auxiliary leveling operations need to be added. If no corresponding measures are added, the end that falls first at the moment of lifting and falling may be damaged by collision.

[0047] In summary, the prefabricated pipe culvert lifting device is used for lifting operations, and the pipe section is kept in a horizontal state throughout the entire process from lifting to lowering; compared with the conventional "pole" two-point lifting, the operation time of a single pipe section can be shortened by about 45 minutes; when conventional lifting uses auxiliary counterweight treatment, an additional cost of 1,500 to 2,000 yuan is required. If auxiliary counterweight treatment is not used, the cost of repairing the damaged pipe section is about 2,000 to 3,000 yuan; the use of the prefabricated pipe culvert lifting device for large-diameter prefabricated pipe culvert lifting can not only speed up the construction progress, but also reduce the damage and deformation of the pipe section to "zero", greatly reducing the project construction cost.

[0048] In addition, this prefabricated pipe culvert lifting device can not only be used for the lifting of large (extra-large) diameter prefabricated pipe culverts, but also for the lifting of conventional small-diameter pipe culverts. It has a wide range of adaptability and can be used multiple times in a project, effectively reducing project costs and indirectly reducing carbon emissions from project construction.

[0049] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A prefabricated pipe culvert hoisting device, characterized in that: It includes a main beam, the middle part of which is fixedly provided with an external lifting lug, which is used for lifting with lifting equipment; one main lifting lug is fixedly provided at each of the opposite ends of the main beam in the axial direction, and the main lifting lug is connected to a main lifting device through a wire rope, and the main lifting device includes a connecting plate connected to an end of the wire rope away from the main lifting lug and a plug-in shaft vertically fixed to the connecting plate, the plug-in shaft is adapted to the embedded lifting hole on the pipe culvert, and the two main lifting devices are used to be respectively inserted into two embedded lifting holes on opposite sides of the peripheral wall of the pipe culvert; an auxiliary lifting lug is fixedly provided on each of the opposite sides of the middle part of the main beam, and an auxiliary lifting lug is connected to an auxiliary hook through a hand hoist, and the two auxiliary hooks are used to be respectively hooked on opposite ends of the pipe culvert in the axial direction.

2. The prefabricated pipe culvert hoisting device according to claim 1, characterized in that: One end of the steel wire rope is connected to the main lifting lug through a shackle, a connecting hole is provided on the connecting plate, and the other end of the steel wire rope is connected to the connecting hole on the connecting plate through another shackle.

3. The prefabricated pipe culvert hoisting device according to claim 1, characterized in that: Reinforcement ribs are provided between the main lifting lugs and the main beam.

4. The prefabricated pipe culvert hoisting device according to claim 1, characterized in that: The main beam includes an I-beam and four strip steel plates welded around the I-beam.

5. The prefabricated pipe culvert hoisting device according to claim 1, characterized in that: The upper hook of the hand chain hoist is connected to the auxiliary lifting ear through a shackle, the auxiliary hook is provided with a mounting hole, and the lifting hook of the hand chain hoist is connected to the mounting hole on the auxiliary hook through another shackle.

6. The prefabricated pipe culvert hoisting device according to claim 5, characterized in that: The auxiliary hook includes an upper rod, a lower rod and a connecting rod. The upper rod and the lower rod are arranged at intervals. One end of the upper rod and one end of the lower rod are fixedly connected by the connecting rod. The mounting hole is provided at one end of the upper rod away from the connecting rod.

7. The prefabricated pipe culvert hoisting device according to claim 6, characterized in that: The upper rod, the lower rod and the connecting rod are an integrated structure.

Images