Reinforced concrete pipe hoisting device

Abstract

The invention belongs to the field of municipal drainage engineering, and particularly relates to a reinforced concrete pipe hoisting device which comprises an upper arm, a lower arm arranged at the bottom of the upper arm and a connecting section fixed between the upper arm and the lower arm, and chamfers are arranged on the outer side of the joint of the upper arm, the lower arm and the connecting section. The upper arm, the lower arm and the connecting section are formed by welding and combining a plurality of steel plates, the interior is hollow, the cross section is rectangular, and reinforcing plates are fixed to the two ends of the joint of the upper arm and the connecting section and the two ends of the joint of the lower arm and the connecting section and are steel plate components; the hoisting device is formed by welding the steel plates, the hoisting contact surface of the device and the pipeline is arc-shaped, the stress area is large, the rubber pad is arranged to realize soft contact, the use safety and durability of the hoisting device are ensured, the pipeline can be ensured to be reasonably stressed and not damaged in the hoisting process, manual binding and unbinding are not needed, and the hoisting efficiency is improved. And the pipe stabilizing device is convenient to use and high in safety performance.

Description

Technical Field

[0001] The present invention belongs to the field of municipal drainage engineering, and specifically relates to a hoisting device for reinforced concrete pipes. Background Art

[0002] With the continuous development of urbanization construction and urban renewal in China, as a supporting project for the city, municipal engineering has been greatly developed, and municipal drainage engineering is an important part of it.

[0003] Currently, for large-diameter drainage pipes, reinforced concrete pipes are mainly used. The traditional method of hoisting is by using a crane + sling. There are the following problems with sling hoisting: the pipe has no lifting points, and it is easy to slip off when using a sling for hoisting, which is relatively dangerous. Moreover, since the pipe bottom is placed on a sand or gravel foundation or a concrete foundation, and after hoisting, the pipe socket is required to be inserted into the socket. When using the single or double loop threading and knotting method or the hanging basket knotting method for binding, it is not easy to remove the sling. Even if it is removed, it will cause the pipe to shift. In addition, the sling is easily worn and needs to be replaced frequently, otherwise it is easy to break, resulting in potential safety hazards. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0005] The technical solution adopted by the present invention to solve its technical problems is: A hoisting device for reinforced concrete pipes according to the present invention includes a U-shaped member, a reinforcing plate, a support, an arc-shaped plate, a rubber pad, and a lifting lug;

[0006] The U-shaped member includes an upper arm, a lower arm provided at the bottom of the upper arm, and a connecting section fixed between the upper arm and the lower arm. Chamfers are provided on the outer sides of the joints of the upper arm, the lower arm, and the connecting section.

[0007] Preferably, the upper arm, the lower arm, and the connecting section are welded and combined by several steel plates, are hollow inside, and have a rectangular cross-section.

[0008] Preferably, reinforcing plates are fixed at both ends of the connection between the upper arm and the connecting section and at both ends of the connection between the lower arm and the connecting section. The reinforcing plates are members made of steel plates.

[0009] Preferably, eight supports are symmetrically fixed on the surfaces of both ends of the lower arm and the reinforcing plate, and arc-shaped plates are fixed at the ends of the eight supports away from the lower arm and the reinforcing plate.

[0010] Preferably, the supports are members made of steel plates, and the arc-shaped plates are bent from steel plates.

[0011] Preferably, a rubber pad is glued to the top of the arc-shaped plate, and a lifting lug is welded to the surface of the top of the upper arm.

[0012] Preferably, it also includes an adjustment component for adjusting the spacing between the two U-shaped parts, the adjustment component including mounting blocks fixed at both ends of the U-shaped part near the reinforcing plate, a motor fixed to the surface of one of the mounting blocks, a threaded cylinder fixed to the output end of the motor, a threaded shaft threadedly connected to the inside of the threaded cylinder, a limiting cylinder fixed to the other mounting block, a sliding plate slidably inserted in the inner cavity of the limiting cylinder, a movable rod fixed at the middle position of one side of the sliding plate, and a limiting shaft inserted through the two ends of the sliding plate, the two sides of the limiting shaft are fixed to the inner wall of the limiting cylinder, the mounting seat is fixed to the surface of the mounting block at the adjacent position, one side of the threaded shaft is fixed to the surface of the mounting block at the adjacent position, and one side of the movable rod is fixed to the surface of the mounting block at the adjacent position.

[0013] Preferably, the adjusting assembly also includes a rotating shaft rotatably connected to one side of the upper arms, a gear fixedly sleeved on the outer circumferential surface of the rotating shaft and the outer circumferential surface of the threaded cylinder, a rotating disk fixed to one side of the rotating shaft, a sleeve frame fitted over the surface of the rotating disk, a resistance shaft inserted in the inner cavity of the sleeve frame, an annular tube sleeved on the outer circumference of the threaded shaft, a support rod fixed at one end of the annular tube, an air guide tube connected and fixed at the other end of the annular tube, a piston rod slidably inserted inside the air guide tube, and a plurality of air outlet pipes connected and fixed on the inner circumferential surface of the annular tube, one side of the piston rod is fixed to the surface of the sleeve frame, one side of the support rod is fixed to the surface of the mounting block at an adjacent position, one side of the resistance shaft is fixed to the surface of the rotating disk, the two gears are meshed, and a filter is fixed on the inner cavity of the air outlet pipe.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention is welded with steel plates, and the lifting contact surface between the device and the pipeline is arc-shaped, with a large force-bearing area, and a rubber pad is provided to achieve soft contact, which not only ensures the safety and durability of the lifting device, but also ensures that the pipeline is reasonably stressed during the lifting process and is not damaged.

[0016] 2. The present invention does not require manual binding or unbinding, and unlike sling lifting which requires manual stabilization of the pipe, it is easy to use, saves labor, and has high safety performance.

[0017] 3. The present invention can adjust the distance between the two U-shaped parts, so that pipes of various lengths and sizes can be hoisted from both sides, thereby improving the stability of the hoisting operation of pipes with a certain length, and at the same time, the dust attached to the surface of the threaded shaft can be blown away when the threaded shaft is extended and contracted, thereby ensuring the normal operation of the device and improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 is the schematic diagram of the three-dimensional structure in Embodiment 1 of the present invention;

[0020] Figure 2 is the front view of Embodiment 1 of the present invention;

[0021] Figure 3 is the left view of Embodiment 1 of the present invention;

[0022] Figure 4 is the top view of Embodiment 1 of the present invention;

[0023] Figure 5 is Figure 2 the sectional view taken along line A-A in;

[0024] Figure 6 is Figure 2 the sectional view taken along line B-B in;

[0025] Figure 7 is Figure 2 the sectional view taken along line C-C in;

[0026] Figure 8 is the front view of the U-shaped part in Embodiment 1 of the present invention;

[0027] Figure 9 is the schematic diagram of the three-dimensional structure in Embodiment 2 of the present invention;

[0028] Figure 10 is the schematic sectional view of the three-dimensional structure of the partial structure in Embodiment 2 of the present invention;

[0029] Figure 11 is in the present invention Figure 9 the enlarged schematic view of the structure at A.

[0030] In the figure: 1. U-shaped part; 101. Upper arm; 102. Lower arm; 103. Connecting section; 2. Reinforcing plate; 3. Support; 4. Arc plate; 5. Rubber pad; 6. Lifting lug; 7. Mounting block; 8. Motor; 9. Threaded cylinder; 10. Threaded shaft; 11. Limiting cylinder; 12. Movable rod; 13. Gear; 14. Sliding disk; 15. Limiting shaft; 16. Rotating shaft; 17. Rotating disk; 18. Sleeve frame; 19. Contact shaft; 20. Ring pipe; 21. Support rod; 22. Air guide cylinder; 23. Piston rod; 24. Air outlet pipe. Detailed implementation manners

[0031] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0032] Embodiment 1:

[0033] AsFigures 1 to 8 As shown in the figure, a hoisting device for reinforced concrete pipes according to an embodiment of the present invention includes a U-shaped member 1, a reinforcing plate 2, a support 3, an arc-shaped plate 4, a rubber pad 5, and a lifting lug 6;

[0034] The U-shaped member 1 includes an upper arm 101, a lower arm 102 disposed at the bottom of the upper arm 101, and a connecting section 103 fixed between the upper arm 101 and the lower arm 102. Chamfers are provided on the outer sides of the joints of the upper arm 101, the lower arm 102, and the connecting section 103.

[0035] As Figures 1 to 8 shown, the upper arm 101, the lower arm 102, and the connecting section 103 are formed by welding a plurality of steel plates, are hollow inside, and have a rectangular cross-section.

[0036] As Figures 1 to 8 shown, reinforcing plates 2 are fixed at both ends of the connection between the upper arm 101 and the connecting section 103 and at both ends of the connection between the lower arm 102 and the connecting section 103. The reinforcing plates 2 are members made of steel plates.

[0037] As Figures 1 to 8 shown, eight supports 3 are symmetrically fixed on the surfaces of both ends of the lower arm 102 and the reinforcing plates 2. Arc-shaped plates 4 are fixed at one ends of the eight supports 3 away from the lower arm 102 and the reinforcing plates 2.

[0038] As Figures 1 to 8 shown, the supports 3 are members made of steel plates, and the arc-shaped plates 4 are formed by bending steel plates.

[0039] As Figures 1 to 8 shown, a rubber pad 5 is glued to the top of the arc-shaped plate 4, and a lifting lug 6 is welded to the surface of the top of the upper arm 101. The lifting lug 6 is processed from a steel plate. The specific method is as follows:

[0040] Step 1: Assemble and weld the steel plates into a U-shaped member according to the dimensions of the U-shaped member 1;

[0041] Step 2: Process the steel plates into 4 reinforcing plates 2 and weld them to the U-shaped member 1;

[0042] Step 3: Process the steel plates into 8 supports 3, weld 6 of them to the U-shaped member at one end and 2 of them to the reinforcing plates 2 at one end. The supports 3 form an angle of 60° with the horizontal direction;

[0043] Step 4: Process the steel plates into arc-shaped plates 4, place the arc-shaped plates 4 on the lower arm 102 of the U-shaped member 1, and weld the contact parts of the arc-shaped plates 4 with the U-shaped member 1 and the supports 3 firmly.

[0044] Step 5: Process the steel plates into lifting lugs 6 and weld them to the upper arm 101 of the U-shaped member 1.

[0045] Step 6: Bond the rubber pad 5 to the arc-shaped plate 4. The specific detailed steps are as follows:

[0046] 1 Surface treatment: First, the surfaces of the steel plate and the rubber pad 5 need to be polished to remove oil stains and impurities and improve the bonding effect. A wire grinding wheel can be used for polishing;

[0047] 2 Pre-coating of metal treatment agent: Evenly apply a layer of metal treatment agent such as XN375 on the surface of the steel plate, which helps to enhance the adhesion between the rubber and the metal;

[0048] 3 Preparation of rubber adhesive: Mix the XN300 Orange Bond high-strength rubber adhesive and the XN-10 curing agent evenly at a ratio of 25:1. The prepared glue should be used up within two hours to prevent curing failure;

[0049] 4 Glue application: After the metal treatment agent is completely dry, apply the rubber adhesive on the surface of the steel plate respectively. When the first layer of glue is dry to a sticky feeling, apply the second layer of glue;

[0050] 5 Bonding: When the glue of the second layer of glue application is dry to a sticky feeling and does not stick to the hand, perform bonding. Use a rubber hammer to tap to ensure that the bonding surface is fully attached and air is excluded.

[0051] Step 7: Antirust paint construction. The specific detailed steps are as follows:

[0052] 1 Base surface cleaning: Remove oil stains, dust, etc. from all steel bases of the hoisting device to ensure that the surface is clean, smooth and flat, so as to facilitate the adhesion and adhesion of the coating.

[0053] 2 Primer coating: When applying the primer, the brushing direction should be consistent, the joints should be neat, and the principle of frequent dipping and short brushing should be followed.

[0054] 3 Topcoat coating: Apply the topcoat after the primer is dry.

[0055] Thus, when hoisting the concrete pipe, extend the lower arm 102 of the U-shaped part 1 into the inner cavity of the concrete pipe, and fit the arc-shaped plate 4 to the inner cavity surface of the pipe. During this process, the stress area on the inner wall of the concrete pipe is large, and a rubber pad 5 is provided to achieve soft contact, which not only ensures the safety and durability of the use of the hoisting device, but also ensures that the pipe is reasonably stressed during hoisting and will not be damaged. Moreover, there is no need for manual binding and unbinding. Unlike sling hoisting, manual pipe stabilization is required, and it is convenient to use, saves labor, and has high safety performance.

[0056] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0057] Example 2:

[0058] As Figures 9 to 10 shown, compared with the first comparative example, another implementation manner of the present invention is as follows:

[0059] It further includes an adjusting assembly for adjusting the distance between two U-shaped members 1. The adjusting assembly includes mounting blocks 7 fixed at positions near the reinforcing plates 2 at both ends of the U-shaped member 1, a motor 8 fixed on the surface of one of the mounting blocks 7, a threaded cylinder 9 fixed on the output end of the motor 8, a threaded shaft 10 threadedly connected inside the threaded cylinder 9, a limiting cylinder 11 fixed on the other mounting block 7, a sliding disk 14 slidably inserted into the inner cavity of the limiting cylinder 11, a movable rod 12 fixed at the middle position on one side of the sliding disk 14, and a limiting shaft 15 inserted through both ends of the sliding disk 14. Both sides of the limiting shaft 15 are fixed to the inner wall of the limiting cylinder 11. The mounting seat 13 is fixed to the surface of the adjacent mounting block 7. One side of the threaded shaft 10 is fixed to the surface of the adjacent mounting block 7. One side of the movable rod 12 is fixed to the surface of the adjacent mounting block 7;

[0060] When it is necessary to hoist a concrete pipe with a certain length dimension, the length between the two U-shaped members 1 is adjusted according to the length of the concrete pipe. By starting the motor 8, the threaded cylinder 9 rotates. Since the two U-shaped members 1 are under the limiting effect of the contact between the sliding disk 14 and the inner cavity of the limiting cylinder 11, they can only slide in the horizontal direction. As a result, the two U-shaped members 1 can only move in the direction of approaching or moving away from each other. Thus, under the cooperation of the threaded structure between the threaded cylinder 9 and the threaded shaft 10, the threaded shaft 10 extends outward from the threaded cylinder 9, and the movable rod 12 extends outward from the limiting cylinder 11. During this process, the limiting shaft 15 can further limit the sliding disk 14 and the movable rod 12, so that the distance between the two U-shaped members 1 can be adjusted to the point where the lower arm 102 can extend to the inner cavities on both sides of the concrete pipe, thereby realizing the stable hoisting operation of the concrete pipe with a certain length.

[0061] As Figures 9 to 10As shown, the adjustment component also includes a rotating shaft 16 rotatably connected to one side of one of the upper arms 101, a gear 13 fixedly sleeved on the outer circumference of the rotating shaft 16 and the outer circumference of the threaded tube 9, a rotating disk 17 fixed to one side of the rotating shaft 16, a sleeve frame 18 fitted on the surface of the rotating disk 17, a conflicting shaft 19 inserted in the inner cavity of the sleeve frame 18, an annular tube 20 sleeved on the outer circumference of the threaded shaft 10, a support rod 21 fixed to one end of the annular tube 20, an air guide tube 22 connected and fixed to the other end of the annular tube 20, a piston rod 23 slidably inserted in the air guide tube 22, and a plurality of air outlet pipes 24 connected and fixed to the inner circumference of the annular tube 20, one side of the piston rod 23 is fixed to the surface of the sleeve frame 18, one side of the support rod 21 is fixed to the surface of the adjacent mounting block 7, one side of the conflicting shaft 19 is fixed to the surface of the rotating disk 17, the two gears 13 are meshed, and a filter is fixed to the inner cavity of the air outlet pipe 24;

[0062] When the motor 8 is started, the meshing action between the two gears 13 can cause the rotating shaft 16 to rotate and drive the rotating disk 17 to rotate. In this process, the support rod 21 can support the annular tube 20 and the air cylinder 22, so that the rotating disk 17 drives the abutting shaft 19 to make a circular motion, and the sleeve frame 18 drives the piston rod 23 to reciprocate in the inner cavity of the air cylinder 22, so that the air pressure in the inner cavity of the air cylinder 22 changes, so that the air outlet pipe 24 can generate airflow to blow away the dust attached to the surface of the threaded shaft 10 after the lifting operation, so as to avoid the occurrence of jamming between the threaded shaft 10 and the threaded cylinder 9, so as to ensure the normal operation of the device.

[0063] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0065] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A hoisting device for reinforced concrete pipes, characterized in that: It includes a U-shaped part (1), a reinforcing plate (2), a support (3), an arc-shaped plate (4), a rubber pad (5) and a lifting lug (6); The U-shaped part (1) includes an upper arm (101), a lower arm (102) arranged at the bottom of the upper arm (101) and a connecting section (103) fixed between the upper arm (101) and the lower arm (102). Chamfers are arranged on the outer sides of the joints of the upper arm (101), the lower arm (102) and the connecting section (103).

2. The hoisting device for reinforced concrete pipes according to claim 1, characterized in that: The upper arm (101), the lower arm (102) and the connecting section (103) are welded and combined by several steel plates, are hollow inside, and have a rectangular cross-section.

3. The hoisting device for reinforced concrete pipes according to claim 2, characterized in that: Reinforcing plates (2) are fixed at both ends of the joint between the upper arm (101) and the connecting section (103) and at both ends of the joint between the lower arm (102) and the connecting section (103). The reinforcing plates (2) are components made of steel plates.

4. A hoisting device for reinforced concrete pipes according to claim 1, characterized in that: Eight supports (3) are symmetrically fixed on the surfaces of both ends of the lower arm (102) and the reinforcing plates (2). Arc-shaped plates (4) are fixed at one ends of the eight supports (3) away from the lower arm (102) and the reinforcing plates (2).

5. The hoisting device for reinforced concrete pipes according to claim 4, characterized in that: The supports (3) are components made of steel plates, and the arc-shaped plates (4) are bent from steel plates.

6. The hoisting device for reinforced concrete pipes according to claim 5, characterized in that: A rubber pad (5) is glued to the top of the arc-shaped plate (4), and a lifting lug (6) is welded to the surface of the top of the upper arm (101).

7. A hoisting device for reinforced concrete pipes according to claim 1, characterized in that: It further includes an adjusting component for adjusting the distance between two U-shaped parts (1). The adjusting component includes mounting blocks (7) fixed at positions close to the reinforcing plates (2) at both ends of the U-shaped part (1), a motor (8) fixed on the surface of one of the mounting blocks (7), a threaded cylinder (9) fixed at the output end of the motor (8), a threaded shaft (10) threadedly connected inside the threaded cylinder (9), a limiting cylinder (11) fixed on the other mounting block (7), a sliding disk (14) slidably inserted into the inner cavity of the limiting cylinder (11), a movable rod (12) fixed at the middle position on one side of the sliding disk (14), and limiting shafts (15) inserted through both ends of the sliding disk (14). Both sides of the limiting shafts (15) are fixed to the inner wall of the limiting cylinder (11). A mounting seat (13) is fixed to the surface of the adjacent mounting block (7). One side of the threaded shaft (10) is fixed to the surface of the adjacent mounting block (7). One side of the movable rod (12) is fixed to the surface of the adjacent mounting block (7).

8. A hoisting device for reinforced concrete pipes according to claim 7, characterized in that: The adjusting assembly further comprises a rotating shaft (16) rotatably connected to one side of the upper arms (101), a gear (13) fixedly sleeved on the outer circumference of the rotating shaft (16) and the outer circumference of the threaded tube (9), a rotating disk (17) fixed to one side of the rotating shaft (16), a sleeve (18) fitted on the surface of the rotating disk (17), an abutment shaft (19) inserted into the inner cavity of the sleeve (18), an annular tube (20) sleeved on the outer circumference of the threaded shaft (10), a support rod (21) fixed to one end of the annular tube (20), and a rotating disk (17) fixed to the outer circumference of the threaded shaft (10). The annular tube (20) includes an air guide cylinder (22) at the other end, a piston rod (23) slidably inserted into the air guide cylinder (22), and a plurality of air outlet pipes (24) connected and fixed to the inner circumference of the annular tube (20); one side of the piston rod (23) is fixed to the surface of the sleeve frame (18); one side of the support rod (21) is fixed to the surface of the adjacent mounting block (7); one side of the abutment shaft (19) is fixed to the surface of the rotating disk (17); the two gears (13) are meshed with each other; and a filter is fixed to the inner cavity of the air outlet pipe (24).

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