Horizontal conveying device for penetrating steel pipe into concrete pipe

Abstract

The invention relates to a horizontal transportation device for penetrating a steel pipe into a concrete pipe, which comprises a support frame body of a door-type frame structure, and an arc-shaped groove matched with the outer wall of the steel pipe is formed in the top of the support frame body; the walking mechanism is installed at the bottom of the supporting frame body and used for driving the whole device and the steel pipe to horizontally move in the concrete pipe. The height and levelness adjusting mechanism is arranged in an arc-shaped groove in the top of the supporting frame body and used for finely adjusting the elevation and levelness of the steel pipes so as to achieve butt joint of the steel pipes. The anti-rollover mechanisms are symmetrically arranged on the two sides of the supporting frame body, the adjustable supporting rods drive the universal wheels to abut against the inner wall of the concrete pipe through stretching and retracting, and lateral supporting is provided. The traction force is greatly reduced by changing sliding into rolling friction, precise alignment of a welded junction is achieved through the jack, safety is guaranteed through lateral supporting, the technical problems that when a large-diameter steel pipe is arranged in a concrete pipe in a penetrating mode, friction is large, alignment is difficult, and the risk is high are solved, and the device is suitable for large-diameter pipeline construction in the fields of comprehensive pipe galleries, oil and gas conveying and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of large pipeline construction, in particular to a special transport device for assisting horizontal movement and precise alignment of a large steel pipe when the steel pipe is arranged in a pre-buried concrete pipe. BACKGROUND

[0002] In the fields of urban utility tunnel, water conservancy project, oil and gas transportation, etc., the structure of "pipe in pipe" is often used, that is, one or more pressure-bearing steel pipes are arranged in a pre-buried large concrete sleeve. This type of construction faces two major core problems:

[0003] 1. Large frictional resistance: the outer wall of the steel pipe directly contacts the inner wall of the concrete pipe, with a high friction coefficient. Relying on the traditional winch to drag requires a large pulling force, which easily damages the outer anti-corrosion layer of the steel pipe, and may even cause the steel pipe to be stuck due to uneven stress.

[0004] 2. High alignment accuracy requirement: the steel pipe joints are connected by welding, which requires the two steel pipe joints to maintain a high degree of coaxiality when they are connected. The traditional method uses a crane to adjust manually, which is low in efficiency, difficult to ensure positioning accuracy, and high in safety risk.

[0005] Currently, although there are schemes using roller supports, ordinary rollers cannot effectively adapt to the possible uneven conditions inside the concrete pipe, and lack effective fine adjustment mechanisms, making it difficult to meet the requirements of modern high-efficiency and high-precision construction.

[0006] In the existing related technologies, patent document (CN218818592U) discloses a PCCP pipe support, which is mainly used for horizontal support and anti-rolling of PCCP pipes in a factory. It is moved by a hand-operated jack lifting the trolley, and the anti-rolling side plate is adjusted in angle by a pad. However, this device is only suitable for static support and has no walking ability, cannot move synchronously with the steel pipe inside the concrete pipe, and has no axial traction cooperation ability, nor three-dimensional fine adjustment function when the steel pipes are connected. Patent document (CN221755213U) discloses a walking type steel pipe alignment and processing device, which can walk inside the installed steel pipe and expand or correct the circle by radial symmetrical jacks. However, this device is only used for processing and alignment correction inside the steel pipe, has no function of supporting the whole steel pipe for long-distance pipe transportation, cannot run in the concrete sleeve (because its structure relies on the inner wall of the steel pipe as a support surface), and has no anti-rollover design, which is poor in stability under asymmetric stress or inclined working conditions.

[0007] Therefore, a special horizontal transport device is needed to solve the above problems. SUMMARY

[0008] The horizontal transportation device for the steel pipe in the concrete pipe is characterized by reasonable structure, simple operation, effective reduction of friction and precise alignment.

[0009] To achieve the above object, the present application adopts the following technical scheme:

[0010] A horizontal transportation device for the steel pipe in the concrete pipe, comprising a support frame body, a walking mechanism, a height and horizontal adjustment mechanism and an anti-rollover mechanism,

[0011] The support frame body is a portal frame structure, and the top thereof is provided with an arc-shaped groove matched with the outer wall of the steel pipe for supporting the steel pipe to be transported.

[0012] The walking mechanism is installed at the bottom of the support frame body and used to drive the whole device and the steel pipe to move horizontally in the concrete pipe.

[0013] The height and horizontal adjustment mechanism is arranged in the arc-shaped groove at the top of the support frame body and comprises a jack support seat and a jack assembled on the jack support seat, and is used to finely adjust the elevation and the levelness of the steel pipe to realize the butt joint of the steel pipe.

[0014] The anti-rollover mechanism is symmetrically arranged on both sides of the support frame body and comprises an adjustable strut and a universal wheel installed at the end of the adjustable strut, and the adjustable strut drives the universal wheel to tightly press against the inner wall of the concrete pipe by extension and retraction to provide lateral support.

[0015] Further, the support frame body is formed by welding a channel steel and an I-beam, and the main beam of the support frame body adopts an H-shaped steel to meet the load-bearing requirement of ≥50 tons.

[0016] Further, the walking mechanism comprises at least two walking wheel sets, and each walking wheel set comprises at least one walking wheel.

[0017] Further, the number of the walking wheel sets is two pairs, and the two pairs of walking wheel sets are symmetrically distributed along the length direction of the support frame body, further improving the stability of the device during horizontal movement and preventing the steel pipe from tilting due to the deviation of the center of gravity.

[0018] Further, the walking wheel adopts a high-strength nylon wheel or a polyurethane rubber-coated wheel, and the wheel shaft of the walking wheel is internally provided with a high-strength rolling bearing.

[0019] Further, the diameter of the walking wheel is 300 mm, and the width thereof is 120 mm.

[0020] Further, the jack is a hydraulic jack or a screw jack; the top surface of the jack support seat is in an arc-shaped structure matched with the outer wall of the steel pipe, and the jack support seat is fixedly connected with the arc-shaped groove at the top of the support frame body to realize the stable support and precise adjustment of the jack on the steel pipe.

[0021] Further, the adjustable strut adopts a hydraulic drive strut or a threaded adjustment strut, which is adjusted in length to adapt to concrete pipes of different diameters.

[0022] Further, the wheel surface of the universal wheel is wrapped with a non-slip rubber layer to increase the friction with the inner wall of the concrete pipe, avoid slipping when laterally supporting, and improve the anti-rollover effect.

[0023] Further, when threading the pipe, the steel pipe is pulled by the traction equipment, and the entire device rolls forward in the concrete pipe together with the steel pipe.

[0024] The beneficial effects of the present application are:

[0025] 1. High efficiency and labor saving: high-performance rollers are used to change sliding friction into rolling friction, greatly reducing the demand for traction force, improving the pipe threading efficiency, and protecting the steel pipe anticorrosion layer.

[0026] 2. Precise alignment: the integrated height and horizontal fine adjustment mechanism can adjust the steel pipe in three directions (up and down, left and right), easily realize precise butt joint of the welding opening, and ensure the welding quality.

[0027] 3. Safety and stability: the unique anti-rollover design ensures the stability of the heavy steel pipe during movement and adjustment, eliminating major safety hazards.

[0028] 4. Strong adaptability: the compact structure of the device can be customized according to different pipe diameters of concrete pipes and steel pipes, and has a wide range of applications.

[0029] 5. Economical and practical: simple structure, low manufacturing cost, reusable, can effectively shorten the construction period and reduce the comprehensive construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a side view structural schematic diagram of the device of the present application;

[0031] Fig. 2 is a front view of the device of the present application;

[0032] Fig. 3 is a scene diagram of the device working in the concrete pipe (including the working state diagram of the anti-rollover mechanism);

[0033] Explanation of figure numbers: 1 - support frame, 2 - walking wheel, 3 - jack support seat, 4 - hydraulic jack, 5 - steel pipe, 6 - adjustable strut, 7 - universal wheel, 8 - concrete pipe. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below in combination with the drawings and examples.

[0035] As Figs. 1 to 3 shown, a horizontal transport device for steel pipe inside concrete pipe according to the present application comprises a support frame 1, a walking mechanism, a height and horizontal adjustment mechanism, and an anti-rollover mechanism.

[0036] The support frame 1 is a portal frame structure welded by channel steel and I-beam, and the top thereof is in an arc-shaped groove shape for supporting the steel pipe 5. The structure ensures sufficient rigidity and strength to bear the huge weight of the steel pipe 5.

[0037] The walking mechanism is installed at the bottom of the support frame 1 and comprises at least two pairs of high-strength nylon wheels or polyurethane rubber-coated wheels. The material of the wheels is selected to provide high load-carrying capacity while maximizing the protection of the inner wall of the concrete pipe from being scratched. High-strength rolling bearings are built in the wheel shafts to ensure easy pushing.

[0038] The height and horizontal adjustment mechanism is the core of the present application. It comprises a jack support seat 3 installed in the arc-shaped groove at the top of the support frame 1 and a hydraulic jack 4 or a screw jack matched therewith. By operating the jack, the elevation and levelness of the steel pipe 5 supported thereon can be precisely fine-tuned, so as to realize perfect alignment with the adjacent steel pipe joint.

[0039] The anti-rollover mechanism is an adjustable strut 6 symmetrically arranged on both sides of the support frame 1. A universal wheel 7 is installed at the end of the adjustable strut 6. During construction, the adjustable strut 6 can be extended so that the universal wheel 7 tightly abuts against the inner wall of the concrete pipe 8, thereby providing lateral support for the entire device and preventing it from overturning during pushing or jacking, greatly improving safety.

[0040] In the transport device of the present embodiment, the support frame 1 uses H-shaped steel as the main beam, ensuring that its load-carrying capacity exceeds 50 tons. The two pairs of walking wheels 2 at the bottom are solid polyurethane wheels with a diameter of 300 mm and a width of 120 mm.

[0041] During construction, first, a plurality of transport devices according to the present application are placed on the track at the bottom of the concrete pipe 8 at a certain interval. A crane is used to hoist the steel pipe 5 to be laid into the arc-shaped groove at the top of the device, which is supported by the hydraulic jack 4.

[0042] During pipe penetration, a traction device (such as a slow winch) is used to pull the steel pipe, and the entire device rolls forward in the concrete pipe together with the steel pipe. When the joint needs to be welded, the operator uses the hydraulic pump station to control the jacks 4 on each device to finely adjust the elevation and horizontal position of the steel pipe 5 until it is completely aligned with the already installed steel pipe. During this period, the adjustable struts 6 on both sides need to be extended so that the universal wheels 7 tightly abut against the inner wall of the concrete pipe 8, and after locking the struts, safe welding work can be carried out.

[0043] This device completely changes the traditional construction mode, and turns a high-risk, low-efficiency operation into a safe, controllable and efficient mechanized process, with high promotion value.

Claims

1. A horizontal transport device for the transport of steel pipes inside concrete pipes, characterized in that, The support frame body, the walking mechanism, the height and horizontal adjustment mechanism, and the anti-rollover mechanism, The support frame body is a portal frame structure, and an arc-shaped groove suitable for the outer wall of a steel pipe is arranged at the top of the support frame body to support the steel pipe to be transported. The walking mechanism is installed at the bottom of the support frame body to drive the whole device and the steel pipe to move horizontally in the concrete pipe. The height and horizontal adjustment mechanism is arranged in the arc-shaped groove at the top of the support frame body and includes a jack support seat and a jack assembled on the jack support seat, which is used to fine-tune the elevation and levelness of the steel pipe to realize butt joint of the steel pipe. The anti-rollover mechanism is symmetrically arranged on both sides of the support frame body and includes an adjustable support rod and a universal wheel installed at the end of the adjustable support rod. The adjustable support rod drives the universal wheel to tightly press against the inner wall of the concrete pipe by extension and retraction, thereby providing lateral support.

2. A horizontal transport device for steel pipes inside concrete pipes according to claim 1, characterized in that, The support frame body is formed by welding a channel steel and an I-beam, and the main beam of the support frame body is an H-shaped steel to meet the load-bearing requirement of greater than or equal to 50 tons.

3. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 1, characterized in that, The walking mechanism includes at least two walking wheel sets, and each walking wheel set includes at least one walking wheel.

4. A horizontal transport device for steel pipes inside concrete pipes according to claim 3, characterized in that, The number of the walking wheel sets is two pairs, and the two pairs of walking wheel sets are symmetrically distributed along the length direction of the support frame body, further improving the stability of the device during horizontal movement and preventing the steel pipe from tilting due to the shift of the center of gravity.

5. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 3, characterized in that, The walking wheels are high-strength nylon wheels or polyurethane rubber-coated wheels, and the wheel shafts of the walking wheels are internally provided with high-strength rolling bearings.

6. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 4, characterized in that, The diameter of the walking wheels is 300 mm, and the width is 120 mm.

7. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 1, characterized in that, The jacks are hydraulic jacks or screw jacks. The top surface of the jack support seat is in an arc-shaped structure suitable for the outer wall of the steel pipe, and the jack support seat is fixedly connected with the arc-shaped groove at the top of the support frame body, thereby realizing stable support and precise adjustment of the steel pipe by the jack.

8. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 1, characterized in that, The adjustable support rod is a hydraulic drive support rod or a threaded adjustment support rod, which is adjusted in length to adapt to concrete pipes with different diameters.

9. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 1, characterized in that, The wheel surface of the universal wheel is wrapped with a rubber layer to increase the friction with the inner wall of the concrete pipe, avoid slipping during lateral support, and improve the anti-rollover effect.

10. The horizontal transport device for steel pipe jacking inside a concrete pipe according to claim 1, characterized in that, During pipe penetration, the steel pipe is pulled by the traction equipment, and the whole device rolls forward in the concrete pipe together with the steel pipe.

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