Small shield tunneling machine for pipe jacking construction

Abstract

The utility model relates to the technical field of non-excavation tunneling equipment, in particular to a small shield tunneling machine for pipe jacking construction, which is characterized in that a plurality of groups of excavation teeth are respectively and uniformly arranged on the front wall of a rotary cutter head along the circumferential direction; the inner shell is arranged on the rear side of the rotary cutter head in the longitudinal direction; the outer shell is concentrically arranged outside the inner shell; the front end of the rear shell is butted with the rear end of the inner shell; the central driving shaft is arranged at the axis of the inner shell and the rear shell; the center of the rotary cutter head is fixed at the front end of the central driving shaft; the spiral blade is fixed on the peripheral wall of the central driving shaft; the front ends of the four deviation rectifying oil cylinders are hinged to the upper, lower, left and right positions of the outer circumferential wall of the inner shell correspondingly, and the rear ends of the deviation rectifying oil cylinders are hinged to the upper, lower, left and right positions of the rear end of the inner circumferential wall of the outer shell correspondingly. The top end of the front support is fixed to the top of the front-end inner peripheral wall of the inner shell. The top end of the rear support is fixed to the top of the rear-end inner circumferential wall of the rear shell. The central driving shaft is rotationally sleeved with the bottom ends of the front support and the rear support respectively; and the problem that the environment is easily polluted during pipe jacking construction is well solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to non -excavation tunneling equipment technical field, concretely for a small -size shield machine for pipe jacking construction. BACKGROUND

[0002] Pipe jacking technology is a non-excavation tunneling type pipe laying construction technology for municipal construction. The advantages are that it does not affect the surrounding environment or has a small influence, the construction site is small, and the noise is small. Moreover, it can operate deeply underground, which is an advantage that excavation pipe laying cannot match. Therefore, it is widely applied.

[0003] At present, for the miniaturization pipe jacking construction, mud balance pipe jacking machine construction is mostly adopted. Compared with manual pipe jacking, although the construction cost is high, it is safer and more efficient. During the construction of the mud balance pipe jacking machine, with the advancement of the tool pipe, the cutter head is continuously rotating, the mud pipe is continuously supplying mud water, and the mud pipe is continuously discharging the mud water mixed with the spoil into the mud water cabin. The mud water cabin needs to maintain a certain pressure. The cutter head drills forward under the pressure of the mud water. However, a large amount of mud slurry is generated during the construction process of the mud balance pipe jacking machine, which not only affects the working environment, but also requires more facilities for mud slurry treatment, and the workload is large. SUMMARY

[0004] The utility model aims at providing a small -size shield machine for pipe jacking construction, which solves the problem of environmental pollution during the pipe jacking construction.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a small -size shield machine for pipe jacking construction, the rotating cutter head is a circular frame structure, a plurality of groups of the excavating teeth are evenly installed on the front wall of the rotating cutter head in the circumferential direction, and the excavating teeth in each group are evenly arranged in the radial direction. The inner shell is arranged on the rear side of the rotating cutter head in the longitudinal direction. The outer shell is concentrically arranged outside the inner shell. The rear end of the rear shell is connected to the rear end of the inner shell. The center driving shaft extends along the axis of the inner shell and the rear shell. The center of the rotating cutter head is fixed to the front end of the center driving shaft. The spiral blade is fixed to the outer peripheral wall of the center driving shaft. The front ends of the four deviation correction oil cylinders are respectively hinged to the upper, lower, left and right positions of the outer peripheral wall of the rear side of the middle part of the inner shell. The rear ends of the deviation correction oil cylinders are respectively hinged to the upper, lower, left and right positions of the inner peripheral wall of the rear end of the outer shell. The top end of the front support is fixed to the top of the inner peripheral wall of the front end of the inner shell. The top end of the rear support is fixed to the top of the inner peripheral wall of the rear end of the rear shell. The center driving shaft is respectively rotatably connected to the bottom ends of the front support and the rear support near the front and rear ends.

[0006] Preferably, the bottom end of the front support and the rear support is respectively fixed with a front bearing seat and a rear bearing seat, and the front bearing and the rear bearing are respectively sleeved between the front bearing seat and the rear bearing seat close to the front end and the rear end of the central driving shaft.

[0007] Preferably, the upper, lower, left and right positions of the middle rear side of the outer peripheral wall of the inner shell body are respectively fixed with ear seats two hinged with the front end of the deviation rectifying oil cylinder.

[0008] Preferably, the rear end of the inner shell body and the front end of the rear shell body are fixedly connected with a circular truncated cone shell body.

[0009] Preferably, the front end of the inner peripheral wall of the outer shell body is fixed with a chest plate.

[0010] Preferably, the rear end of the outer shell body and the front end of the rear shell body are connected with a flexible sealing ring.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. The small shield tunneling machine for pipe jacking construction has simple overall structure, and the flat setting of the rotary cutter head reduces the disturbance to the excavation surface, so that the stability of the soil body of the excavation surface is easily ensured.

[0013] 2. The small shield tunneling machine for pipe jacking construction adopts spiral blades to outwardly convey the muck, and the muck conveying structure is simple, and the environment of the operation site is avoided from being polluted by sludge. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the sectional view structural schematic diagram of the utility model.

[0015] Fig. 1-rotary cutter head;

[0016] 2-excavation tooth;

[0017] 3-central driving shaft;

[0018] 4-spiral blade;

[0019] 5-outer shell body; 5.1-ear seat one;

[0020] 6-inner shell body; 6.1-ear seat two;

[0021] 7-rear shell body;

[0022] 8-circular truncated cone shell body;

[0023] 9-deviation rectifying oil cylinder;

[0024] 10 - front support; 10.1 - front bearing seat; 10.2 - front bearing;

[0025] 11 - rear support; 11.1 - rear bearing seat; 11.2 - rear bearing;

[0026] 12 - chest plate;

[0027] 13 - flexible sealing ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of small shield machine for pipe jacking construction, rotating cutterhead 1 is circular frame structure multiple groups of digging teeth 2 are respectively installed in rotating cutterhead 1 front wall along the circumference, and digging tooth 2 is respectively evenly arranged along the radial in each group. Digging tooth 2 adopts pick-shaped cutting pick, rotating cutterhead 1 is composed of two concentric rings and multiple beams fixed between the two rings along the radial, and the front wall of outer ring and beam body is equidistantly fixed with tooth seat, digging tooth 2 can be detachably assembled on tooth seat, when digging tooth 2 appears serious wear or damage, it is convenient to replace. Flat digging head is easy to reduce the disturbance to excavation face, so as to facilitate guaranteeing the stability of excavation face soil body.

[0030] Inner shell 6 is located at the rear side of rotating cutterhead 1 along the longitudinal direction; outer shell 5 is concentrically arranged outside inner shell 6; rear shell 7 is butted at the rear end of inner shell 6 through circular truncated cone shell 8 at the front end; wherein, the diameter of rear shell 7 is between the diameters of inner shell 6 and outer shell 5.

[0031] Center drive shaft 3 extends along the axial position of inner shell 6 and rear shell 7, and the center of rotating cutterhead 1 is fixed at the front end of center drive shaft 3. Spiral blade 4 is fixed on the outer peripheral wall of center drive shaft 3.

[0032] The front ends of the four deviation correction oil cylinders 9 are respectively hinged to the upper, lower, left and right positions of the rear outer peripheral wall of the middle part of inner shell 6, and the rear ends of the four deviation correction oil cylinders 9 are respectively hinged to the upper, lower, left and right positions of the rear inner peripheral wall of outer shell 5. Among them, the upper, lower, left and right positions of the rear outer peripheral wall of the middle part of inner shell 6 are respectively fixed with ear seats two 6.1 hinged with the front ends of the deviation correction oil cylinders 9, and the upper, lower, left and right positions of the rear end of the inner peripheral wall of outer shell 5 are respectively fixed with ear seats one 5.1 hinged with the rear ends of the deviation correction oil cylinders 9.

[0033] The top end of the front support 10 is fixed to the top of the inner circumferential wall of the front end of the inner shell 6, and the top end of the rear support 11 is fixed to the top of the inner circumferential wall of the rear end of the rear shell 7; the bottom end of the front support 10 and the bottom end of the rear support 11 are respectively fixed with the front bearing seat 10.1 and the rear bearing seat 11.1, and the front bearing 10.2 and the rear bearing 11.2 are respectively sleeved between the front bearing seat 10.1 and the rear bearing seat 11.1 close to the front and rear ends of the center driving shaft 3.

[0034] In summary, during construction, the rear end of the center driving shaft 3 is fixedly connected to the end of the drill rod of the drilling machine, the center driving shaft 3 is driven to rotate by the drill rod of the drilling machine, the center driving shaft 3 drives the rotary cutter head 1 to rotate, the excavating teeth 2 cut the soil on the excavation surface, and the excavated soil is conveyed backward by the spiral blade 4 rotating with the center driving shaft 3, and the rear end of the spiral blade 4 is connected with a belt conveyor, so that the discharged soil can be further transported away.

[0035] When deviation correction is needed during excavation, the corresponding deviation correction oil cylinder 9 is extended and retracted to achieve the purpose. That is, when deviation correction is needed, the extension and retraction of the corresponding deviation correction oil cylinder 9 will drive the inner shell 6 to be slightly deviated relative to the outer shell 5, so as to achieve the purpose of deviation correction and direction adjustment.

[0036] In order to avoid the excavated soil from entering the cavity between the outer shell 5 and the inner shell 6, the front end of the inner circumferential wall of the outer shell 5 is fixed with a breast plate 12.

[0037] In order to avoid the excavated soil from entering the cavity between the outer shell 5 and the inner shell 6 from the rear end of the outer shell 5, a flexible sealing ring 13 is connected between the rear end of the outer shell 5 and the front end of the rear shell 7.

[0038] It should be noted that the relational terms such as first and second and the like in this text are used only to distinguish one entity or action from another, without necessarily requiring or implying that these entities or actions occur in any temporal or chronological sequence.

[0039] The terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusion, so that a process, method, article or apparatus that includes a list of elements does not necessarily include those elements only, but can include other elements not expressly listed or inherent to such process, method, article or apparatus.

[0040] 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, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A small shield machine for pipe jacking, characterized in that, Comprising: A rotary cutterhead (1) in a circular frame structure; A plurality of groups of digging teeth (2) are evenly installed on the front wall of the rotary cutterhead (1) in the circumferential direction, and the digging teeth (2) in each group are evenly arranged in the radial direction; An inner shell (6) is provided on the rear side of the rotary cutterhead (1) in the longitudinal direction; An outer shell (5) is concentrically provided outside the inner shell (6); A rear shell (7) is connected to the rear end of the inner shell (6); A central drive shaft (3) extends along the axial position of the inner shell (6) and the rear shell (7), and the center of the rotary cutterhead (1) is fixed to the front end of the central drive shaft (3); A spiral blade (4) is fixed to the outer peripheral wall of the central drive shaft (3); Four deviation correction oil cylinders (9) are hingedly connected to the upper, lower, left and right positions of the outer peripheral wall of the rear side of the inner shell (6), and the rear ends of the deviation correction oil cylinders (9) are hingedly connected to the upper, lower, left and right positions of the rear end of the inner peripheral wall of the outer shell (5); A front support (10) is fixed to the top end of the inner peripheral wall of the front end of the inner shell (6); A rear support (11) is fixed to the top end of the inner peripheral wall of the rear end of the rear shell (7); The central drive shaft (3) is rotatably connected to the bottom end of the front support (10) and the rear support (11) near the front and rear ends.

2. A small shield machine for pipe jacking according to claim 1, characterized in that: The bottom end of the front support (10) and the rear support (11) is respectively fixed with a front bearing seat (10.1) and a rear bearing seat (11.1), and the central drive shaft (3) is rotatably connected to the front bearing seat (10.1) and the rear bearing seat (11.1) near the front and rear ends.

3. The small shield machine for pipe jacking construction according to claim 1, characterized in that: The upper, lower, left and right positions of the rear side of the outer peripheral wall of the inner shell (6) are respectively fixed with ear seats two (6.1) hingedly connected to the front ends of the deviation correction oil cylinders (9), and the upper, lower, left and right positions of the rear end of the inner peripheral wall of the outer shell (5) are respectively fixed with ear seats one (5.1) hingedly connected to the rear ends of the deviation correction oil cylinders (9).

4. The small shield tunneling machine for pipe jacking construction of claim 1, wherein: A circular truncated cone shell (8) is fixedly connected between the rear end of the inner shell (6) and the front end of the rear shell (7).

5. The small-sized shield tunneling machine for pipe jacking construction according to claim 1, characterized in that: A chest plate (12) is fixed to the front end of the inner peripheral wall of the outer shell (5).

6. A small shield tunneling machine for pipe jacking according to claim 1, characterized in that: A flexible sealing ring (13) is connected between the rear end of the outer shell (5) and the front end of the rear shell (7).

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