Auxiliary device for enabling directly-buried prefabricated thermal insulation pipe to penetrate through interior of reinforced concrete sleeve

Abstract

The utility model discloses an auxiliary device for a directly-buried prefabricated thermal insulation pipe to penetrate through the inside of a reinforced concrete sleeve, which comprises two limiting channel steels which are symmetrically and fixedly arranged at the bottom of the inner peripheral wall of the reinforced concrete sleeve, a walking trolley is arranged on the two channel steels, and the walking trolley comprises an arc-shaped supporting plate for supporting the prefabricated thermal insulation pipe. Two sets of walking wheel supports are symmetrically and fixedly arranged at the bottom of the arc-shaped supporting plate, and walking wheel assemblies matched with the limiting steel channels are rotationally arranged on the walking wheel supports correspondingly. According to the utility model, the situation of larger friction between the outer heat-insulating layer of the heat-insulating pipeline and the inner wall of the reinforced concrete pipeline in the construction process of penetrating through the large-pipe-diameter directly-buried prefabricated heat-insulating pipe in the reinforced concrete sleeve can be avoided, the outer heat-insulating layer of the heat-insulating pipeline is prevented from being dragged and damaged, and the construction efficiency during pipeline penetrating can be effectively improved; the device is safe and reliable, so that the construction quality is ensured, and the labor intensity and the construction cost are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of municipal pipeline construction equipment technology, and in particular to an auxiliary device for passing through a directly buried prefabricated insulated pipe inside a reinforced concrete sleeve. Background Technology

[0002] Pipe jacking is a trenchless pipeline laying technology used in municipal pipeline construction. Its advantages include effectively reducing environmental impact, requiring less construction space, and generating less noise. However, it also faces some technical challenges: for example, when passing through a pre-insulated direct-buried pipe inside a concrete casing, significant friction occurs between the outer insulation layer and the inner wall of the reinforced concrete pipe. Using large machinery for dragging can easily damage the outer insulation layer, affecting the pipe's lifespan. To prevent damage to the outer protective layer of the pre-insulated direct-buried pipe during this process, various methods and technologies are currently used in engineering practice, including but not limited to: using traditional conveyor belts coated with grease and a winch to drag the pre-insulated pipe. This method has high equipment costs and low construction efficiency. Furthermore, when encountering long jacking distances and large diameter pre-insulated direct-buried pipes, the overall weight of the insulated pipe and the long transmission distance make it impossible to use traditional conveyor belts to transport the insulated pipe through the reinforced concrete casing. Therefore, an auxiliary device for passing through a pre-insulated direct-buried direct-buried pipe inside a reinforced concrete casing is needed. Utility Model Content

[0003] The purpose of this utility model is to provide an auxiliary device for passing through a directly buried prefabricated insulated pipe inside a reinforced concrete sleeve, thereby solving the technical problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses an auxiliary device for passing through a pre-buried insulated pipe inside a reinforced concrete sleeve. It includes two symmetrically fixed limiting channel steels at the bottom of the inner circumferential wall of the reinforced concrete sleeve. A traveling trolley is provided on the two channel steels. The traveling trolley includes an arc-shaped support plate for supporting the pre-buried insulated pipe. Two sets of four wheel brackets are symmetrically fixed at the bottom of the arc-shaped support plate. Each wheel bracket is rotatably equipped with a wheel assembly adapted to the limiting channel steel.

[0006] Furthermore, each of the limiting channel steels is fixedly provided with ground anchor bolts on both sides for fixed connection with the reinforced concrete sleeve.

[0007] Furthermore, each of the aforementioned wheel assemblies includes a steel shaft rotatably mounted on the wheel bracket, a steel wheel adapted to the limiting channel steel is sleeved in the middle of the steel shaft, and the steel shaft is rotatably connected to the wheel bracket through two high-strength bearings.

[0008] Furthermore, the steel shaft has an external thread on the outer side of the corresponding wheel bracket, and a high-strength nut is provided for threaded connection with it.

[0009] Furthermore, the two ends of the arc-shaped support plate are respectively connected to two side baffles with arc-shaped cross sections by two first arc-shaped springs, and the two side baffles are respectively connected to the two ends of the top baffle with arc-shaped cross sections by second arc-shaped springs.

[0010] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0011] This invention can avoid significant friction between the outer insulation layer of the insulated pipe and the inner wall of the reinforced concrete pipe during the construction of large-diameter direct-buried prefabricated insulated pipes inside reinforced concrete sleeves, thus preventing dragging and damage to the outer insulation layer of the insulated pipe. It can effectively improve the construction efficiency when the pipe is crossed, and the device is safe and reliable, thereby ensuring the construction quality. It also effectively reduces labor intensity and construction costs. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0014] Figure 2 This is a schematic diagram of the walking trolley structure according to Embodiment 1 of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0016] Explanation of reference numerals in the attached drawings: 1. Reinforced concrete sleeve; 2. Limiting channel steel; 3. Ground anchor bolt; 4. Precast insulation pipe; 5. Arc-shaped support plate; 6. Wheel support; 7. Steel shaft; 8. Steel wheel; 9. High-strength nut; 10. First arc-shaped spring; 11. Side baffle; 12. Second arc-shaped spring; 13. Top baffle. Detailed Implementation

[0017] Example 1

[0018] like Figures 1-2 As shown, an auxiliary device for passing a pre-buried insulated pipe through a reinforced concrete sleeve includes two symmetrically fixed limiting channel steels 2 fixedly installed at the bottom of the inner peripheral wall of the reinforced concrete sleeve 1. The notches of each limiting channel steel 2 face upwards, and anchor bolts 3 are fixedly installed on both sides for fixed connection with the reinforced concrete sleeve 1. Each anchor bolt 3 is fixedly embedded inside the reinforced concrete sleeve 1 and fixedly connected to the corresponding limiting channel steel 2 by welding.

[0019] Two of the channel steels are provided with a traveling trolley that can move along it. The traveling trolley includes an arc-shaped support plate 5 for supporting the prefabricated insulation pipe 4. Two sets of wheel brackets 6 are symmetrically fixed at the bottom of the arc-shaped support plate 5 by welding. Each wheel bracket 6 is rotatably mounted with a wheel assembly that is compatible with the limiting channel steel 2.

[0020] In this embodiment, each of the wheel assemblies includes a steel shaft 7 rotatably mounted on the wheel support 6. A steel wheel 8, adapted to the limiting channel steel 2, is sleeved on the middle of the steel shaft 7. The steel shaft 7 is rotatably connected to the wheel support 6 through two high-strength bearings. The steel wheel 8 can roll within the corresponding limiting channel steel 2, thereby allowing the entire trolley to move along the two limiting channel steels, and the limiting channel steel 2 can prevent the trolley from derailing.

[0021] The steel shaft 7 has an external thread on the part located outside the corresponding wheel bracket 6, and a high-strength nut 9 is installed thereto. The high-strength nut 9 limits the steel shaft, and spot welding is used to further improve the firmness of the connection between the two.

[0022] In this embodiment, two limiting channel steels are fixedly installed inside the reinforced concrete sleeve, and grease is applied to the inner side of the limiting channel steels to lubricate the tracks. Then, the prefabricated insulated pipe is placed above the arc-shaped top plate of the traveling trolley. A winch or other traction equipment is used to guide the traveling trolley, supporting the prefabricated insulated pipe, through the inside of the reinforced concrete sleeve, thus completing the pipe jacking construction. The two limiting channel steels ensure the stability of the traveling trolley's movement. This invention avoids significant friction between the outer insulation layer of the insulated pipe and the inner wall of the reinforced concrete pipe during the construction of large-diameter directly buried prefabricated insulated pipes within the reinforced concrete sleeve, preventing dragging and damage to the outer insulation layer. It effectively improves construction efficiency during pipe crossing, ensures the safety and reliability of the device, guarantees construction quality, and effectively reduces labor intensity and construction costs.

[0023] Example 2

[0024] This embodiment does not change the other structures of Embodiment 1, such as Figure 3 As shown, two side baffles 11 with arc-shaped cross-sections are connected to both ends of the arc-shaped support plate 5 by two first arc-shaped springs 10. The two side baffles 11 are connected to both ends of a top baffle 13 with an arc-shaped cross-section by second arc-shaped springs 12. When the pre-insulated pipe is placed on the arc-shaped support plate 5, the two side baffles and the top baffle effectively limit the pre-insulated pipe on the arc-shaped support plate, thereby improving the stability of the pre-insulated pipe when it moves along with the traveling trolley.

[0025] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An auxiliary device for passing through a directly buried prefabricated insulated pipe inside a reinforced concrete sleeve, characterized in that: Two symmetrical limiting channel steels are fixedly arranged at the bottom of the inner wall of the reinforced concrete sleeve, two walking trolleys are arranged on the two limiting channel steels, the walking trolley comprises an arc-shaped supporting plate for supporting the prefabricated heat preservation pipe, two groups of walking wheel supports are fixedly arranged at the bottom of the arc-shaped supporting plate, and a walking wheel assembly matched with the limiting channel steel is rotatably arranged on each walking wheel support.

2. The auxiliary device for prefabricated direct-buried thermal insulation pipe inside crossing of reinforced concrete sleeve according to claim 1, characterized in that: Two ground anchor bolts for fixedly connecting with the reinforced concrete sleeve are fixedly arranged at the two sides of each limiting channel steel.

3. The auxiliary device for prefabricated direct-buried thermal insulation pipe inside crossing of reinforced concrete sleeve according to claim 1, characterized in that: Each walking wheel assembly comprises a steel shaft rotatably arranged on the walking wheel support, a steel wheel matched with the limiting channel steel is sleeved on the middle part of the steel shaft, and the steel shaft is rotatably connected with the walking wheel support through two high-strength bearings.

4. The auxiliary device for prefabricated direct-buried thermal insulation pipe inside crossing of reinforced concrete sleeve according to claim 3, characterized in that: An external thread is formed on the steel shaft at a position corresponding to the outer side of the walking wheel support, and a high-strength nut is arranged in threaded connection with the steel shaft.

5. The auxiliary device for prefabricated direct-buried thermal insulation pipe inside crossing through reinforced concrete sleeve according to claim 1, characterized in that: Two side blocking plates with arc-shaped cross sections are connected to the two ends of the arc-shaped supporting plate through two first arc-shaped springs, and the two side blocking plates are connected to the two ends of a top blocking plate with an arc-shaped cross section through second arc-shaped springs.

Images