Lifting appliance suitable for reinforced concrete pipes of various specifications

Abstract

The utility model discloses a lifting appliance suitable for reinforced concrete pipes of various specifications, which belongs to the field of municipal pipeline construction and comprises a C-shaped steel frame, a sliding block capable of moving along the length direction of the C-shaped steel frame is arranged on the horizontal portion of the upper side of the C-shaped steel frame, and a lifting ring is fixedly connected onto the sliding block. A first inserting assembly used for fixing the position of the sliding block is arranged on the U-shaped steel frame. By moving the sliding block, the position of the lifting ring can be fixed, gravity center matching of a lifting point is achieved, after the U-shaped steel frame is lifted by lifting equipment, the arc-shaped plate with the corresponding radian is selected according to the diameter of a pipeline and clamped into the U-shaped grooves in the multiple plate blocks, the curvature of the supporting face is adjusted through hinge linkage, then the square vertical rod is pushed upwards to slide in the vertical groove, and the lifting point is lifted. The height is locked through the second plug pin and the positioning hole, the linkage rod is driven to push the arc-shaped supporting plate upwards to be attached to the inner diameter of the pipeline, self-adaptive supporting force is formed, reinforced concrete pipelines with different pipe diameters can be conveniently and rapidly hoisted, the instability risk in the hoisting process is reduced, and the personnel cost is effectively saved.

Description

Technical Field

[0001] This utility model belongs to the field of municipal pipeline construction technology, specifically relating to a lifting tool applicable to reinforced concrete pipes of various specifications. Background Technology

[0002] Stormwater and sewage pipes are two types of functional pipes used in urban drainage systems to collect and transport rainwater and sewage. In municipal engineering, stormwater and sewage pipes are mostly made of reinforced concrete and have a wide range of diameters (D300-D2000). On-site construction is mostly carried out by hoisting.

[0003] Flexible slings and C-hooks are commonly used for lifting. Flexible slings are often used for small-diameter pipes, but require pre-excavation of channels for retrieval. Furthermore, retrieval can disturb the positioned pipe, causing changes in the joint width. C-hooks are typically used for large-diameter pipes, but their contact area with the pipe is less than 30% of the pipe's circumference, resulting in poor pipe stability and a tendency to sway or even overturn. The lifting process requires multiple workers for manual righting, posing a risk of falling objects from height. Moreover, frequent adjustments to the lifting equipment are necessary when changing pipe diameters, leading to low efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting tool applicable to various specifications of reinforced concrete pipes in order to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a lifting device applicable to reinforced concrete pipes of various specifications, including a C-shaped steel frame. The upper horizontal part of the C-shaped steel frame is provided with a slider that can move along its length. A lifting ring is fixedly connected to the slider, and the C-shaped steel frame is provided with a plug-in component for fixing the position of the slider. The lower horizontal part of the C-shaped steel frame is provided with several arc-shaped support plates on both sides, which can be adjusted in curvature. The bottom surface of each of the arc-shaped support plates is rotatably connected to a linkage rod, and the bottom surface of the C-shaped steel frame is provided with an adjustment structure for adjusting the height of the lower end of the linkage rod.

[0007] Preferably, the upper surface of the C-shaped steel frame is provided with a groove that is adapted to the sliding of the slider, and both the slider and the groove have a T-shaped cross-section.

[0008] Preferably, the first plug-in assembly includes a fixing hole through which the slider is opened, a pin is inserted into the fixing hole, and the C-shaped steel frame has several through holes for inserting the pin.

[0009] Preferably, the perforation passes through the groove, and the end of the first pin has a threaded section, which is threadedly connected to the perforation on one side.

[0010] Preferably, the arc-shaped support plate is composed of several plates, which are rotatably connected by hinges, and the end plates are also rotatably connected to the side wall of the C-shaped steel frame by hinges. The upper end of the linkage rod is rotatably connected to the bottom surface of one of the plates.

[0011] Preferably, the adjustment structure includes a vertical groove formed on the bottom surface of the C-shaped steel frame, in which a square upright is slidably connected. The vertical groove and the square upright are fitted with a clearance, and the lower end of the linkage rod is rotatably connected to the lower side of the square upright. The side wall of the C-shaped steel frame is provided with a second plug-in component for fixing the height position of the square upright.

[0012] Preferably, the second plug-in assembly includes a pin hole on the side wall of the C-shaped steel frame, into which a second pin is inserted, and a plurality of positioning holes for insertion of the second pin are provided on the side wall of the square upright.

[0013] Preferably, the end of the second pin is provided with a magnetic plate, which is magnetically connected to the ferromagnetic C-shaped steel frame.

[0014] Preferably, the bottom side of the vertical groove is provided with a groove that communicates with the outside, and the lower end of the linkage rod is adapted to this groove, and a connecting plate is connected between the lower ends of two adjacent square uprights.

[0015] Preferably, a C-shaped groove is provided on the side wall of each of the aforementioned plates, and the same arc-shaped plate is engaged in the C-shaped groove. The arc-shaped plate has several different arc specifications.

[0016] The beneficial effects are:

[0017] By moving the slider, the position of the lifting ring can be fixed to achieve center of gravity matching of the lifting point. After the lifting equipment lifts the C-shaped steel frame, the arc plate with the corresponding curvature is selected according to the pipe diameter and inserted into the C-shaped groove on several plates. The curvature of the support surface is adjusted by the hinge linkage. Then, the square upright is pushed up and slides in the vertical groove. The height is locked by the pin two and the positioning hole, so that the linkage rod is driven to push the arc support plate to fit with the inner diameter of the pipe, forming an adaptive support force. It can conveniently and quickly lift reinforced concrete pipes of different diameters, reduce the risk of instability during the lifting process, and effectively save personnel costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a partial perspective view of the C-shaped steel frame of this utility model;

[0021] Figure 3 This is a three-dimensional disassembled view of the arc-shaped support plate of this utility model.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1. C-shaped steel frame; 2. Slider; 3. Plug-in assembly one; 301. Through hole; 302. Pin one; 303. Fixing hole; 304. Threaded section; 4. Plug-in assembly two; 401. Pin hole; 402. Pin two; 403. Positioning hole; 404. Magnetic plate; 5. Lifting ring; 6. Slide groove; 7. Arc-shaped support plate; 701. Plate; 702. Hinge; 8. Linkage rod; 9. Arc-shaped plate; 10. C-shaped groove; 11. Square upright; 12. Vertical groove; 13. Connecting plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] See Figures 1-3 As shown, this utility model provides a lifting device applicable to reinforced concrete pipes of various specifications, including a C-shaped steel frame 1. The upper horizontal part of the C-shaped steel frame 1 is provided with a slider 2 that can move along its length direction. A lifting ring 5 is fixedly connected to the slider 2. The C-shaped steel frame 1 is provided with a plug-in component 3 for fixing the position of the slider 2. The lower horizontal part of the C-shaped steel frame 1 is provided with several arc-shaped support plates 7 on both sides that can be adjusted in curvature. The bottom surface of the arc-shaped support plates 7 is rotatably connected with a linkage rod 8. The bottom surface of the C-shaped steel frame 1 is provided with an adjustment structure for adjusting the height of the lower end of the linkage rod 8.

[0026] As an optional implementation, the upper surface of the C-shaped steel frame 1 is provided with a groove 6 that is adapted to slide the slider 2, and both the slider 2 and the groove 6 have a T-shaped cross-section, which can improve the stability of the slider 2 movement and improve the hoisting strength.

[0027] As an optional implementation, the plug-in assembly 3 includes a fixing hole 303 that passes through the slider 2, and a pin 302 is inserted into the fixing hole 303. The C-shaped steel frame 1 has several through holes 301 that are inserted into the pin 302. The through holes 301 pass through the slide groove 6. The end of the pin 302 has a threaded section 304, and the threaded section 304 is threadedly connected to one side of the through hole 301. The slider 2 moves in the slide groove 6 at the upper end of the C-shaped steel frame 1. The position of the lifting ring 5 is fixed by the cooperation of the pin 302 and the through hole 301, so as to achieve the center of gravity matching of the lifting point. The threaded section 304 at the end prevents the pin 302 from rotating multiple times.

[0028] As an optional implementation, the arc-shaped support plate 7 is composed of several plates 701, which are rotatably connected by hinges 702. The end plates 701 are also rotatably connected to the side wall of the C-shaped steel frame 1 by hinges 702. The upper end of the linkage rod 8 is rotatably connected to the bottom surface of one of the plates 701. An arc plate 9 with a corresponding curvature is selected according to the pipe diameter and inserted into the C-shaped groove 10 on the plates 701. The curvature of the support surface is adjusted by the hinges 702 to ensure that the contact area with the outer wall of the pipe is ≥60%.

[0029] Reference Figure 3 As shown, the adjustment structure includes a vertical groove 12 formed on the bottom surface of the C-shaped steel frame 1. A square upright 11 is slidably connected in the vertical groove 12, with a clearance fit between the vertical groove 12 and the square upright 11. The lower end of the linkage rod 8 is rotatably connected to the lower side of the square upright 11. The side wall of the C-shaped steel frame 1 is provided with a second insertion component 4 for fixing the height position of the square upright 11. The second insertion component 4 includes a pin hole 401 formed on the side wall of the C-shaped steel frame 1, into which a second pin 402 is inserted. The side wall of the square upright 11 is provided with several positioning holes 403 for insertion into the second pin 402. The end of the second pin 402 is provided with a magnetic plate 404. The magnetic plate 404 is magnetically connected to the ferromagnetic C-shaped steel frame 1. The square upright 11 slides in the vertical groove 12 by pushing it up. The height is locked by the pin 402 and the positioning hole 403, which drives the linkage rod 8 to push the arc support plate 7 to fit with the inner diameter of the pipe, forming an adaptive support force. The three-point connection between the linkage rod 8, the arc support plate 7 and the C-shaped steel frame 1 ensures the stability of the support. At the same time, the height adjustment of the square upright 11 enables the arc support plate 7 to fit with the inner wall of the pipe. The positioning holes 403 of different heights correspond to pipes with different inner diameters, which can be adjusted according to the size of the pipe. The magnetic plate 404 can prevent the pin 402 from accidentally falling off by magnetic force.

[0030] Specifically, a groove communicating with the outside is provided on one side of the bottom of the vertical groove 12, and the lower end of the linkage rod 8 is adapted to this groove. A connecting plate 13 is connected between the lower ends of two adjacent square uprights 11. The groove allows the square uprights 11 to be completely retracted into the vertical groove 12, avoiding the square uprights 11 from protruding too much height under the U-shaped steel frame 1. The connecting plate 13 allows two adjacent square uprights 11 to move simultaneously, thereby realizing the simultaneous adjustment of the arc-shaped support plates 7 on both sides and improving the adjustment efficiency.

[0031] Furthermore, several plates 701 have I-shaped grooves 10 on their side walls, and the same arc plate 9 is engaged in several I-shaped grooves 10. The arc plate 9 has several arc specifications. Through the design of multiple specifications of arc plates 9 (only one specification is shown in the figure), the overall arc of the arc support plate 7 can be adapted to a variety of different pipes. At the same time, the arc plate 9 being engaged in the I-shaped grooves 10 can improve the overall strength of the arc support plate 7.

[0032] During the hoisting preparation stage, the slider 2 is moved in the groove 6 opened at the upper end of the C-shaped steel frame 1. The position of the lifting ring 5 is fixed by the cooperation of the first pin 302 and the through hole 301 to achieve the center of gravity matching of the hoisting point. After the hoisting equipment lifts the C-shaped steel frame 1, the arc plate 9 with the corresponding curvature is selected according to the pipe diameter and inserted into the C-shaped groove 10 on several plates 701. The curvature of the support surface is adjusted by the hinge 702 to ensure that the contact area with the outer wall of the pipe is ≥60%. Then, the square upright 11 is pushed up and slides in the vertical groove 12. The height is locked by the second pin 402 and the positioning hole 403, so as to drive the linkage rod 8 to push the arc support plate 7 to fit with the inner diameter of the pipe, forming an adaptive support force. Then the pipe is hoisted.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A lifting device applicable to reinforced concrete pipes of various specifications, characterized in that: The utility model provides a kind of steel frame, including the upper side horizontal portion of the steel frame of the upper side horizontal portion of the steel frame (1) is equipped with the slider (2) that can move along its length direction, the slider (2) is fixedly connected with the lifting ring (5), and the steel frame (1) is equipped with the plug-in assembly one (3) for fixing the position of slider (2), the lower side horizontal portion of the steel frame (1) is equipped with the arc bracing plate (7) that can be radially adjusted on both sides, the bottom surface of several arc bracing plates (7) is rotatably connected with linkage lever (8), and the bottom surface of the steel frame (1) is equipped with the adjusting structure for adjusting the height of the lower end of linkage lever (8).

2. The hoist of claim 1, wherein: The upper surface of the steel frame (1) is provided with a sliding groove (6) adapted to the sliding of the slider (2), and the cross sections of the slider (2) and the sliding groove (6) are both designed as T-shaped.

3. The hoist of claim 2, wherein: The plug-in assembly one (3) includes a fixing hole (303) provided through the slider (2), a plug pin one (302) is inserted into the fixing hole (303), and a plurality of through holes (301) are provided through the steel frame (1) and inserted with the plug pin one (302).

4. The hoist of claim 3, wherein: The through hole (301) penetrates the sliding groove (6), the end of the plug pin one (302) is provided with a threaded section (304), and the threaded section (304) is threadedly connected with one side of the through hole (301).

5. The hoist of claim 1, wherein: The arc bracing plate (7) is composed of a plurality of plate blocks (701), the plate blocks (701) are rotatably connected through hinges (702), and the end plate block (701) is also rotatably connected with the side wall of the steel frame (1) through the hinge (702), and the upper end of the linkage lever (8) is rotatably connected to the bottom surface of one of the plate blocks (701).

6. The hoist of claim 1, wherein: The adjusting structure includes a vertical slot (12) provided in the bottom surface of the steel frame (1), a square vertical rod (11) is slidably connected in the vertical slot (12), the vertical slot (12) and the square vertical rod (11) are gap-fitted, the lower end of the linkage lever (8) is rotatably connected to the lower side of the square vertical rod (11), and the side wall of the steel frame (1) is provided with a plug-in assembly two (4) for fixing the height position of the square vertical rod (11).

7. The hoist of claim 6, wherein: The plug-in assembly two (4) includes a plug pin hole (401) provided in the side wall of the steel frame (1), a plug pin two (402) is inserted into the plug pin hole (401), and a plurality of positioning holes (403) are provided in the side wall of the square vertical rod (11) and inserted with the plug pin two (402).

8. The hoist of claim 7, wherein: The end of the plug pin two (402) is provided with a magnetic plate (404), and the magnetic plate (404) is magnetically connected with the ferromagnetic steel frame (1).

9. The hoist of claim 6, wherein: One side of the bottom of the vertical slot (12) is provided with a groove in communication with the outside, the lower end of the linkage lever (8) is matched with the groove, and the lower ends of adjacent two square vertical rods (11) are connected with a connecting plate (13).

10. The hoist of claim 5, wherein: The side wall of each of the plate blocks (701) is provided with a U-shaped groove (10), and the same arc plate (9) is clamped in each of the U-shaped grooves (10), and the arc plate (9) has a plurality of arc specifications.

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