Special lifting appliance for circular concrete jacking pipe joint

Abstract

The utility model discloses a special lifting appliance for a circular concrete jacking pipe joint, which comprises a lifting main beam, a stabilizing component is arranged at the bottom of the lifting main beam, supporting and lifting holes for steel ropes to penetrate through are equidistantly formed below the outer part of the lifting main beam, and the supporting and lifting holes are symmetrically formed in the left side and the right side of the stabilizing component; and the stabilizing assembly comprises a guide frame, the guide frame is fixedly connected to the bottom of the hoisting main beam and is arranged in the middle, and a two-way screw rod is rotationally installed in the guide frame. According to the special lifting appliance for the circular concrete jacking pipe joint, a hand wheel is rotated to drive a two-way screw to rotate, the two-way screw rotates to drive sliding blocks of the front part and the rear part to oppositely slide and get close to each other, a supporting rod is pushed to move, the supporting rod pushes a stabilizing plate below to move downwards, and the stabilizing plate moves downwards to abut against the outer portion of the pipe joint from the upper portion to provide stable supporting; therefore, the pipe joints are effectively prevented from shaking or shifting in the hoisting process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a top pipe construction technical field, concretely is a special lifting appliance for concrete round top pipe pipe section. BACKGROUND

[0002] With the rapid development of urban rail transit, the construction method of underground passage is increasing. Among them, the pipe jacking construction technology is widely used in various underground passage construction, and the pipe jacking construction technology does not need to excavate the road surface, close the traffic and move the pipeline, and has the advantages of low noise, no dust, civilized construction engineering and so on, which better solves the influence on the surrounding buildings and the road traffic congestion and other problems in the construction of urban underground engineering, the concrete top pipe, also known as pipe jacking construction, is a kind of non-excavation underground pipe laying technology, which needs to use the lifting appliance when the pipe section is transferred;

[0003] The existing patent authorization announcement No. CN219526007U discloses a special lifting appliance for concrete round top pipe pipe section, which is connected with the lifting appliance bottom end through the lifting rope, and the lifting appliance is kept vertical during installation due to the setting of the supporting piece, which facilitates the preparation work before lifting, then the lifting equipment is fixed with the main lifting hole, and the steel rope is fixed with the pipe section, so as to realize the lifting of the pipe section;

[0004] In the above-mentioned patent, the steel rope is connected in the supporting and lifting hole, and the steel rope is fixed with the pipe section, which can cause different direction shaking of the pipe section inside the steel rope during lifting, and cannot support and stabilize the outer wall of the pipe section, which reduces the stability of lifting. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a special lifting appliance for concrete round top pipe pipe section to solve the problem that the steel rope is connected in the supporting and lifting hole and the steel rope is fixed with the pipe section, which can cause different direction shaking of the pipe section inside the steel rope during lifting, and cannot support and stabilize the outer wall of the pipe section, which reduces the stability of lifting.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a special lifting appliance for concrete round top pipe pipe section, including lifting main beam, the bottom of lifting main beam is provided with stabilizing assembly, the lower part of the outside of lifting main beam is equidistantly provided with supporting and lifting hole for passing through steel rope, the supporting and lifting hole is symmetrically arranged on the left and right sides of stabilizing assembly; The stabilizing assembly comprises a guide frame, which is fixedly connected to the bottom of the lifting main beam and centrally arranged, a double screw rod is rotatably installed in the inside of the guide frame, the outside of the double screw rod is threadedly connected with two sliding blocks arranged symmetrically in front and back, two sliding blocks are movably hinged with two supporting rods at the bottom, and the ends of the two supporting rods away from the sliding blocks are movably hinged with a stabilizing plate, and the front end of the double screw rod is fixedly installed with a hand wheel.

[0007] Preferably, the four corners of the top of the stabilizing plate are fixedly connected with a plurality of guide rods, and the left and right sides of the guide frame are fixedly connected with a plurality of hole plates corresponding to the positions of the plurality of guide rods, and the plurality of guide rods are slidingly connected in the plurality of hole plates.

[0008] Preferably, the longitudinal section of the stabilizing plate is in an inverted V-shaped structure, and the bottom of the stabilizing plate is fixedly installed with a soft pad.

[0009] Preferably, the soft pad is made of nitrile rubber.

[0010] Preferably, a main lifting hole is formed in the upper portion of the outer portion of the main lifting beam, and the main lifting hole is arranged on the same vertical line as the stabilizing assembly.

[0011] Preferably, a reinforcing rib arranged in a front-rear symmetry is welded between the guide frame and the main lifting beam.

[0012] Preferably, side support frames are fixedly connected to the left and right sides of the main lifting beam.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The hand wheel is rotated to drive the bidirectional screw rod to rotate, the bidirectional screw rod drives the sliding blocks of the front and rear parts to slide towards each other, the support rod is pushed to move, the support rod pushes the stabilizing plate below to move downward, the stabilizing plate provides stable support by abutting against the outer portion of the pipe section from above, so that the shaking or deviation of the pipe section during hoisting is effectively prevented.

[0015] 2. The inverted V-shaped structure of the stabilizing plate can better adapt to the outer wall curvature of the circular pipe section, increase the contact area with the pipe section, and thus improve the stability, the soft pad can avoid the surface damage of the pipe section caused by the direct rigid contact between the stabilizing plate and the outer wall of the pipe section, the friction force between the soft pad and the pipe section is used to enhance the anti-skid effect, and the shaking of the pipe section is effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is an explosion schematic view of the structure of the stabilizing assembly of the utility model;

[0018] Figure 3 It is a right view structure schematic view of the utility model;

[0019] Figure 4 It is an installation position schematic view of the anti-skid pad layer of the utility model;

[0020] Figure 5The utility model discloses a three-dimensional structure schematic diagram when hoisting is used.

[0021] In the drawing: 1, hoist main beam; 2, support and hang hole; 3, stabilizing assembly; 31, guide frame; 32, two-way screw rod; 33, sliding block; 34, support rod; 35, stabilizing plate; 36, hand wheel; 37, guide rod; 38, hole plate; 39, soft pad; 4, main hoist hole; 5, side support frame; 6, reinforcing rib. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of the utility model protection.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The utility model provides a kind of lifting appliance special for concrete round top pipe joint, including hoist main beam 1, the bottom of hoist main beam 1 is provided with stabilizing assembly 3, the lower part of the outside of hoist main beam 1 is equidistantly opened with the support and hang hole 2 for being arranged steel rope, support and hang hole 2 is symmetrically arranged on the left and right sides of stabilizing assembly 3;Stabilizing assembly 3 includes guide frame 31, guide frame 31 is fixedly connected to the bottom of hoist main beam 1 and is centrally arranged, two-way screw rod 32 is rotatably installed in the inside of guide frame 31, two-way screw rod 32 is externally threaded and is symmetrically arranged with two sliding blocks 33, the bottom of two sliding blocks 33 is movably hinged with two support rods 34, the end of two support rods 34 away from sliding block 33 is movably hinged with stabilizing plate 35, the front end of two-way screw rod 32 is fixedly installed with hand wheel 36, by rotating hand wheel 36, two-way screw rod 32 is driven to rotate, two-way screw rod 32 drives the sliding block 33 of two parts to slide and approach each other, and support rod 34 is pushed to move, and support rod 34 pushes stabilizing plate 35 below to move down, and stabilizing plate 35 moves down from above and is abutted on the outside of pipe joint to provide stable support;When needing to remove stable support, hand wheel 36 is reversely rotated, and two-way screw rod 32 drives the sliding block 33 of front and back to slide away from each other, and support rod 34 is pulled up by sliding block 33 and is retracted, and stabilizing plate 35 is lifted, and no longer contacts pipe joint, in actual hoisting process, the downshift amplitude of stabilizing plate 35 can be controlled by adjusting hand wheel 36 according to the diameter size of pipe joint, to ensure that stabilizing plate 35 can be closely attached to the outer wall of pipe joint of different sizes, so that effectively prevent pipe joint from shaking or deviating during hoisting.

[0024] A plurality of guide rods 37 are fixedly connected to the four corners at the top of the stabilizing plate 35, and a plurality of hole plates 38 corresponding to the positions of the plurality of guide rods 37 are fixedly connected to the left and right sides of the guide frame 31, respectively. The plurality of guide rods 37 are slidingly connected in the plurality of hole plates 38, which can provide accurate guiding during the up-and-down movement of the stabilizing plate 35, avoiding the deviation or tilting of the stabilizing plate 35 due to uneven stress. At the same time, when the stabilizing plate 35 is pushed downward by the support rod 34, the guide rods 37 will stably slide along the inner side of the hole plate 38, ensuring that the stabilizing plate 35 always maintains a horizontal state and contacts the outer wall of the pipe section. When the stabilizing plate 35 is raised for storage, the guide rods 37 can also guide the stable resetting of the stabilizing plate 35 through the sliding cooperation with the hole plate 38.

[0025] The longitudinal section of the stabilizing plate 35 is in an inverted "V" shape, and a soft pad 39 is fixedly installed at the bottom of the stabilizing plate 35. The inverted "V" shape can better adapt to the outer wall curvature of the circular pipe section, increase the contact area with the pipe section, and thus improve the stability. The soft pad 39 at the bottom not only avoids surface damage of the pipe section caused by direct rigid contact between the stabilizing plate 35 and the outer wall of the pipe section, but also enhances the anti-skid effect through the friction between the soft pad 39 and the pipe section, effectively preventing the relative axial sliding of the pipe section during hoisting.

[0026] The soft pad 39 is made of nitrile rubber material, which has good wear resistance and aging resistance, can maintain its elasticity and anti-skid performance for a long time, and prolongs the overall service life of the lifting device.

[0027] Please refer to Figure 1 and Figure 3 , a main lifting hole 4 is opened at the top of the hoisting girder 1, and the main lifting hole 4 is arranged on the same vertical line as the stabilizing assembly 3. The diameter of the main lifting hole 4 is matched with the size of the lifting hook of the lifting equipment. The vertical correspondence between the main lifting hole 4 and the stabilizing assembly 3 ensures that the stabilizing force of the stabilizing assembly 3 on the pipe section and the lifting force are on the same straight line, thereby ensuring the stability of hoisting.

[0028] The guide frame 31 and the hoisting girder 1 are welded with a reinforcing rib 6 arranged in front and back symmetry. The reinforcing rib 6 can uniformly transmit the radial pressure of the pipe section borne by the guide frame 31 to the hoisting girder 1, significantly improving the shear strength and overall structural rigidity of the connection part of the two. The welding parts of the reinforcing rib 6, the guide frame 31, and the hoisting girder 1 are all fully welded and then stress-relieved after removing the welding slag by grinding, effectively avoiding the risk of structural cracking caused by residual stress generated during welding, and further ensuring the structural safety and stability of the lifting device in long-term heavy-load hoisting operations.

[0029] Please refer to Figure 1The left and right sides of the hoisting main beam 1 are fixedly connected with side support frames 5, the side support frames 5 can support the hoisting main beam 1, the lifting appliance can be conveniently placed vertically, use is facilitated, and meanwhile the side support frames 5 can be located above the pipe joint and play a stabilizing role on the pipe joint when the pipe joint is hoisted.

[0030] Working principle: when in use, the hoisting steel rope is connected in the reinforcing rib 6 at the corresponding position according to the hoisting position of the pipe joint, the hoisting equipment is fixed with the main lifting hole 4, then the hoisting steel rope is fixed around the pipe joint, the hand wheel 36 is rotated, the bidirectional screw rod 32 inside the guide frame 31 is driven to rotate by the hand wheel 36, the sliding blocks 33 of the front and rear parts inside the guide frame 31 are driven to slide oppositely along the inside of the guide frame 31 by the rotation of the bidirectional screw rod 32, the front and rear sliding blocks 33 slide to each other, the support rod 34 connected at the bottom is driven to move by the front and rear sliding blocks 33, the support plate 35 below is driven to move downward by the support rod 34, the guide rod 37 is guided to move downward in the hole plate 38 when the support plate 35 moves downward, the support plate 35 abuts against the outside of the pipe joint from above to provide stable support;

[0031] When the pipe joint is hoisted, the support plate 35 abuts against the pipe joint to limit the axial and radial shaking of the pipe joint, effectively improving the stability of hoisting, the above is the working process of the whole device, and the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A special lifting device for concrete round pipe section, comprising a lifting main beam (1), characterized in that: The bottom of the hoisting main beam (1) is provided with a stabilizing assembly (3), and a plurality of supporting and hoisting holes (2) for passing through steel ropes are equidistantly arranged on the lower part of the outer part of the hoisting main beam (1), and the supporting and hoisting holes (2) are symmetrically arranged on the left and right sides of the stabilizing assembly (3); the stabilizing assembly (3) comprises a guide frame (31) which is fixedly connected to the bottom of the hoisting main beam (1) and centrally arranged, a bidirectional screw rod (32) is rotatably installed in the guide frame (31), the outer part of the bidirectional screw rod (32) is threadedly connected with two sliding blocks (33) which are symmetrically arranged in front and back, two supporting rods (34) are movably hinged to the bottom of each of the two sliding blocks (33), and a stabilizing plate (35) is movably hinged to the end of each of the two supporting rods (34) which is away from the sliding block (33), and a hand wheel (36) is fixedly installed at the front end of the bidirectional screw rod (32).

2. The special lifting tool for concrete round pipe section of the pipe conduit according to claim 1, characterized in that: A plurality of guide rods (37) are fixedly connected to the top of the stabilizing plate (35), a plurality of hole plates (38) which are respectively corresponding to the positions of the guide rods (37) are fixedly connected to the left and right sides of the guide frame (31), and the guide rods (37) are respectively slidably connected into the hole plates (38).

3. The special lifting tool for concrete round pipe section of claim 1, wherein: The longitudinal section of the stabilizing plate (35) is in an inverted "V" shape, and a soft pad (39) is fixedly installed at the bottom of the stabilizing plate (35).

4. The concrete round pipe section special sling according to claim 3, characterized in that: The soft pad (39) is made of nitrile rubber.

5. The concrete round pipe section special sling according to claim 1, characterized in that: A main hoisting hole (4) is arranged on the upper part of the outer part of the hoisting main beam (1), and the main hoisting hole (4) is arranged on the same vertical line as the stabilizing assembly (3).

6. The concrete round pipe section special sling according to claim 5, characterized in that: The guide frame (31) and the hoisting main beam (1) are welded with a reinforcing rib (6) which is symmetrically arranged in front and back.

7. The concrete round pipe section special sling according to claim 5, characterized in that: The left and right sides of the hoisting main beam (1) are fixedly connected with side supporting frames (5).

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