Slurry balance pipe jacking construction structure

Abstract

The utility model relates to the technical field of building construction, in particular to a slurry balance pipe jacking construction structure, which effectively solves the problems that the stroke of a hydraulic jack is not enough and the jacking construction of a concrete pipe cannot be smoothly carried out in the slurry balance pipe jacking construction by arranging an arc-shaped jacking iron between the jack and a grading ring. The arc-shaped jacking iron comprises two major arc-shaped plates which are coaxially arranged at intervals in the length direction of the guide rail, openings of the two major arc-shaped plates face downwards, and the two major arc-shaped plates are connected through a supporting framework; due to the fact that the opening of the arc-shaped jacking iron is downward, when the arc-shaped jacking iron is hoisted between the jack and the grading ring, the positions of the cable and the slurry pipe do not need to be adjusted, the situation that the cable of the slurry pipe is repeatedly dismantled is avoided, and construction operation time is saved. And rolling wheels are connected to the lower portions of the two sides of the openings of the two major arc-shaped plates in a rolling mode, so that friction between the arc-shaped jacking iron and the guide rail can be reduced, and pipe jacking construction is more labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a mud-water balanced jacking pipe construction structure. Background Art

[0002] When the pipeline crosses an important traffic road, mud-water balanced pipe jacking technology is required to ensure that the road is continuously open. This pipe jacking technology uses a drill bit to rotate and drill into the soil layer, and at the same time uses mud to flush the sand and soil, and then uses mud to bring out the excess sand and soil to form a hole. At the same time, a hydraulic jack is used to push the concrete pipe into the hole drilled by the drill bit of the pipe jacking machine.

[0003] On construction sites, we often encounter problems such as the concrete pipe is too long and the hydraulic jack stroke is insufficient, making it impossible to carry out the jacking construction smoothly. Utility Model Content

[0004] In view of the above-mentioned problems, the utility model discloses a slurry balance pipe jacking construction structure to solve the problem in the prior art that the hydraulic jack stroke in slurry balance pipe jacking construction is insufficient and the concrete pipe jacking construction cannot be smoothly carried out.

[0005] A mud-water balanced pipe jacking construction structure, comprising a guide rail and a jack, an arc-shaped jacking iron, a pressure equalizing ring and a concrete pipe arranged on the guide rail;

[0006] The pressure equalizing ring is arranged at one end of the concrete pipe adjacent to the jack, and the arc-shaped top iron is arranged between the jack and the pressure equalizing ring;

[0007] The arc-shaped top iron comprises two superior arc-shaped plates coaxially arranged at intervals along the length direction of the guide rail, the openings of the two superior arc-shaped plates are both facing downward, and the two superior arc-shaped plates are connected by a supporting frame;

[0008] Rollers are rotatably connected to the lower sides of the openings of the two superior arc-shaped plates, and the rollers are adapted to the guide rails.

[0009] In some of the embodiments, the support frame includes a plurality of connecting tubes arranged in an arc shape and spaced apart from each other, and two ends of the connecting tubes are respectively welded and fixed on opposite surfaces of the two superior arc-shaped plates.

[0010] In some of the embodiments, a lifting lug is fixed in the middle of the connecting pipe located at the uppermost part of the arc-shaped top iron.

[0011] In some of the embodiments, the support frame includes five connecting tubes arranged in an arc shape and spaced apart from each other.

[0012] In some of the embodiments, the connecting pipe is a steel pipe.

[0013] In some of the embodiments, the superior arc-shaped plate is a steel plate.

[0014] In some of the embodiments, the jack is a hydraulic jack.

[0015] Compared with the prior art, the above utility model has at least one of the following advantages or beneficial effects:

[0016] The utility model discloses a mud-water balanced pipe jacking construction structure. By arranging an arc-shaped jacking iron between a jack and a pressure equalizing ring, the problem that the hydraulic jack has insufficient stroke and cannot smoothly carry out the concrete pipe jacking construction in the mud-water balanced pipe jacking construction is effectively solved; and by arranging the arc-shaped jacking iron, the structure includes two superior arc-shaped plates coaxially arranged at intervals along the length direction of a guide rail, the openings of the two superior arc-shaped plates are both downward, and the two superior arc-shaped plates are connected by a supporting frame; because the opening of the arc-shaped jacking iron is downward, when the arc-shaped jacking iron is hoisted between the jack and the pressure equalizing ring, it is not necessary to adjust the position of the cable and the mud pipe, and it is avoided to see the cable of the mud pipe repeatedly removed, which saves time and labor, has a simple structure, and thus saves construction time; and by rollingly connecting rollers under both sides of the openings of the two superior arc-shaped plates, the friction between the arc-shaped jacking iron and the guide rail can be reduced, thereby making the pipe jacking construction more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0018] Figure 1 It is a structural schematic diagram of the mud-water balance pipe jacking construction structure in the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the arc-shaped top iron in the embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional view of the arc-shaped top iron in the embodiment of the utility model;

[0021] In the figure: 1 is a jack; 2 is an arc-shaped top iron; 21 is an arc-shaped plate; 22 is a connecting pipe; 23 is a roller; 24 is a lifting lug; 3 is a pressure equalizing ring; 4 is a concrete pipe; and 5 is a guide rail. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0023] like Figures 1 to 3As shown, the present embodiment discloses a slurry balance pipe construction structure. Specifically, the construction structure includes a guide rail 5 and a jack 1, an arc-shaped top iron 2, an equalizing ring 3 and a concrete pipe 4 arranged on the guide rail 5; the equalizing ring 3 is arranged at one end of the concrete pipe 4 adjacent to the jack 1, and the arc-shaped top iron 2 is arranged between the jack 1 and the equalizing ring 3; the arc-shaped top iron 2 includes two superior arc plates 21 coaxially arranged at intervals along the length direction of the guide rail 5, the openings of the two superior arc plates 21 are both facing downward, and the two superior arc plates 21 are connected by a supporting frame (that is, the openings of the arc-shaped top iron 2 are facing downward); rollers 23 are rotatably connected to the lower sides of the openings of the two superior arc plates 21, and the rollers 23 are adapted to the guide rail 5.

[0024] Specifically, the support frame includes five connecting tubes 22 arranged in an arc shape at intervals (the arc shape of the five connecting tubes 22 is consistent with the arc shape of the superior arc plate 21, so that the five connecting tubes 22 can be fixed on the plate surface of the superior arc plate 21 at intervals), and the two ends of each connecting tube 22 are respectively welded and fixed on the opposite surfaces of the two superior arc plates 21 (that is, one end of the connecting tube 22 is welded and fixed on the plate surface where one superior arc plate 21 is opposite to the other superior arc plate 21, and the other end of the connecting tube 22 is welded and fixed on the plate surface where the other superior arc plate 21 is opposite to the superior arc plate 21); and a lifting ear 24 is fixed in the middle of the connecting tube 22 located at the top of the arc top iron 2 to facilitate lifting; specifically, the connecting tube 22 is a steel pipe; the superior arc plate 21 is a steel plate; and the jack 1 is a hydraulic jack.

[0025] It should be noted that the inner diameter of the superior arc plate 21 needs to be slightly smaller than the inner diameter of the concrete pipe 4 , and the outer diameter of the superior arc plate 21 needs to be slightly larger than the outer diameter of the concrete pipe 4 .

[0026] In this embodiment, the specific method for making the arc-shaped top iron 2 is as follows:

[0027] First, two arc-shaped steel plates are made of 16 mm steel plates. The width of the arc-shaped steel plates is 300 mm, the inner diameter is 2 meters, and the opening of the arc-shaped steel plates faces downward. Then, five 1-meter-long Ф273×10 steel pipes are used as a supporting frame between the two arc-shaped steel plates, and a lifting lug 24 is welded to the top steel pipe for lifting. After that, rollers 23 are installed on both sides of the opening of each arc-shaped steel plate to facilitate its sliding on the guide rail 5.

[0028] In this embodiment, the construction method of the above-mentioned mud-water balance pipe jacking construction structure is:

[0029] Step 1: The hydraulic jack is pushed on the pressure equalizing ring 3 at the rear of the concrete pipe 4 until it reaches the maximum stroke.

[0030] Step 2, retract the hydraulic jack, directly hoist the arc-shaped jacking iron 2 onto the guide rail 5 between the hydraulic jack and the equalizing ring 3, and then start jacking until the maximum stroke of the hydraulic jack 1 is reached.

[0031] Step three, retract the hydraulic jack, lift out the arc-shaped top iron 2, disconnect the mud pipe and the cable, lift out the pressure equalizing ring, and complete the jacking construction of the concrete pipe 4.

[0032] Step 4: hoist in the next concrete pipe 4, hoist in the pressure equalizing ring 3, extend the mud pipe and connect the cable.

[0033] Step 5: Repeat steps 1 to 4 until the pipe jacking construction is completed.

[0034] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0035] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A mud-water balanced pipe jacking construction structure, characterized in that: It comprises a guide rail and a jack, an arc-shaped top iron, a pressure equalizing ring and a concrete pipe arranged on the guide rail; The pressure equalizing ring is arranged at one end of the concrete pipe adjacent to the jack, and the arc-shaped top iron is arranged between the jack and the pressure equalizing ring; The arc-shaped top iron comprises two superior arc-shaped plates coaxially arranged at intervals along the length direction of the guide rail, the openings of the two superior arc-shaped plates are both facing downward, and the two superior arc-shaped plates are connected by a supporting frame; Rollers are rotatably connected to the lower sides of the openings of the two superior arc-shaped plates, and the rollers are adapted to the guide rails.

2. The slurry-water balanced pipe jacking construction structure according to claim 1, characterized in that: The support frame comprises a plurality of connection pipes arranged in an arc shape at intervals, and two ends of the connection pipes are respectively welded and fixed on the opposite surfaces of the two superior arc-shaped plates.

3. The mud-water balanced pipe jacking construction structure according to claim 2, characterized in that: A lifting lug is fixed in the middle of the connecting pipe located at the uppermost part of the arc-shaped top iron.

4. The mud-water balanced pipe jacking construction structure according to claim 2, characterized in that: The support frame comprises five connecting pipes which are arranged in an arc shape and at intervals.

5. The mud-water balanced pipe jacking construction structure according to claim 2, characterized in that: The connecting pipe is a steel pipe.

6. The mud-water balanced pipe jacking construction structure according to claim 1, characterized in that: The superior arc-shaped plate is a steel plate.

7. The slurry-water balanced pipe jacking construction structure according to claim 1, characterized in that: The jack is a hydraulic jack.

Images