CN215292499U - A tunnelling aircraft nose for construction is pushed away to secret culvert pipe - Google Patents

Abstract

The utility model discloses a tunneling machine head for pushing construction of an underground culvert pipe, which comprises a tunneling cutter head, a machine body, a driving device and the like, wherein the machine body comprises a fixed cylinder external member (5) and a rotary cylinder external member (3), the head part corresponding to the fixed barrel suite (5) is provided with a ring-shaped first boss (51), the head that rotatory section of thick bamboo external member (3) correspond is equipped with annular second boss (31), the outer peripheral edge of fixed cylinder external member (5) is equipped with radial positioning's centering subassembly, the afterbody internal periphery of rotatory section of thick bamboo external member (3) is connected with annular ring gear (7), rotatory section of thick bamboo external member (3) pass through bearing and fixed cylinder external member (5) coaxial coupling, one side at rotatory section of thick bamboo external member (3) is connected through mounting panel (9) in a set of or multiunit drive arrangement (8), drive arrangement (8) output epaxial gear (83) and annular ring gear (7) meshing. The heading machine head has the characteristics of small volume, light weight, compact structure, convenience in installation and disassembly and improvement on the utilization rate of the input power of the machine head.

Description

A tunnelling aircraft nose for construction is pushed away to secret culvert pipe

Technical Field

The utility model relates to an engineering machine tool makes the field, especially relates to a tunnelling aircraft nose that is used for secret culvert pipe top to push to be under construction.

Background

In urban subways and municipal works, cable pipelines, drainage pipelines and the like are often required to be laid underground, and the pipe jacking construction has the advantage of small interference to the ground, so that the pipe jacking construction is generally adopted in underground culvert construction.

In the pipe jacking construction, the culvert pipe is generally prefabricated and formed by reinforced concrete, a jacking device is used for jacking and laying the culvert pipe between two preset vertical shafts section by section, in the propelling process of the culvert pipe, a manual tunneling method is generally adopted on the working face, namely, the geological is manually excavated at the end part of the first section of culvert pipe, after a section of section is excavated, the culvert pipe is pushed, and the process is repeated. The manual tunneling method has the problems of low construction progress, increased labor intensity, easy occurrence of ground settlement caused by overexcavation and the like.

Chinese patent application No. 201821987857.7 discloses a pipe-jacking tunneling machine head capable of realizing automatic correction of overturning, which comprises a tool pipe and a tunneling disk, wherein the front end of the tool pipe is movably provided with the tunneling disk, the tunneling disk comprises a chassis, a reamer and a tunneling cutter group, the tool pipe comprises a front tool pipe and a rear tool pipe, the front end of the front tool pipe is provided with a partition plate, a speed reducer and a transmission motor are arranged in the front tool pipe behind the partition plate through a mounting seat, an output shaft of the speed reducer penetrates through the partition plate to be connected with the tunneling disk, an input shaft of the speed reducer is connected with the transmission motor, a relatively closed space is formed between the tunneling disk and the partition plate, and the tunneled muck is ejected by high-pressure water in the water inlet pipe to form slurry, and then is discharged through the slurry pipe.

Although the technical scheme solves the problem caused by manual tunneling, the following defects exist: 1) the input power of the motor is constant, the workload cannot be matched according to the geological condition, and the utilization rate of the input power is low; 2) the machine head comprises a front tool pipe and a rear tool pipe, so that the machine head is heavy in weight and large in volume and is inconvenient to install and disassemble on site; 3) the motor, the reducer and the culvert pipe are concentrically arranged, and the slag soil can be only filled with high-pressure water in a relatively closed space formed between the tunneling disc and the partition plate to form slurry to be discharged through a pipeline, so that additional equipment is added, and the cost is increased; 4) although monitoring measures are taken to stop the machine in time, the problem of machine head overturning is not fundamentally solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a small light in weight, compact structure, be convenient for installation and dismantle, can improve a tunnelling aircraft nose that is used for secret culvert pipe top to push away construction of aircraft nose input power utilization ratio.

In order to solve the technical problem, the utility model adopts the technical scheme that: a tunneling machine head for pushing construction of an underground culvert pipe comprises a tunneling cutter head, a machine body, a driving device and the like, wherein the machine body comprises a fixed cylinder sleeve and a rotary cylinder sleeve; the head part corresponding to the fixed cylinder kit is provided with an annular first boss, the head part corresponding to the rotary cylinder kit is provided with an annular second boss, the outer periphery of the fixed cylinder kit is provided with a radially positioned centering assembly, the inner periphery of the tail part of the rotary cylinder kit is connected with an annular gear ring, and the rotary cylinder kit is coaxially connected with the fixed cylinder kit through a bearing; one or more groups of driving devices are connected to one side of the interior of the rotating cylinder sleeve piece through a mounting plate, and a gear on an output shaft of the driving devices is meshed with the annular gear ring.

Further, centering subassembly is including stretching out fixed centering post of length and stretching out adjustable regulation post of length, and on the centering post was located and is close fixed section of thick bamboo external member head outer peripheral edges, on the regulation post was located fixed section of thick bamboo external member afterbody outer peripheral edges, centering post and regulation post were at least along outer peripheral edges equipartition more than three groups.

Furthermore, a plurality of material baffle plates which are spirally arranged along the axial direction are arranged on the inner periphery of the front part of the rotating cylinder kit, and the material baffle plates are uniformly distributed along the inner periphery.

Furthermore, the device also comprises a discharge funnel which is connected to the fixed barrel sleeve and is obliquely positioned in the hollow part of the rotary barrel sleeve.

Further, the bearing comprises a plane bearing and a radial bearing, the plane bearing is installed between the first boss and the second boss, and the radial bearing is installed between the tail portions of the fixed cylinder sleeve and the rotating cylinder sleeve.

Furthermore, the tunneling cutter head comprises a cutter seat, a cutter head and a second boss on the rotating cylinder sleeve, one end of the cutter seat is connected with the second boss, and the other end of the cutter seat is connected with the cutter head.

Further, the cutter heads are not continuously distributed along the tunneling section, and a hollow part is arranged in the center of the cutter heads.

Further, the drive device includes a torque converter or an integrated motor reducer.

Compared with the prior art, the tunneling machine head for pushing construction of the underground culvert pipe has the following beneficial effects;

1. through the first boss of cyclic annular that solid fixed cylinder external member head set up to and the centering subassembly of the radial positioning that the outer peripheral edges of solid fixed cylinder external member were equipped with, can convenient and fast ground install the aircraft nose with the location at the tip that pushes away the culvert pipe, can fix the aircraft nose with pushing away the culvert pipe effectively together through the regulation post of centering subassembly, prevent the aircraft nose for the upset accident of culvert pipe production.

2. One or more groups of driving devices are connected to one side of the rotating cylinder sleeve through the mounting plate, gears on output shafts of the driving devices are meshed with the annular gear ring fixedly connected to the rotating cylinder sleeve, and the side type arrangement structure mode can adjust the mounting number of the driving devices according to the working load, so that the utilization rate of the input power of the machine head is improved, and the empty space in the middle is convenient for tunneling dregs to be discharged.

3. Because the cutter heads are not continuously distributed along the tunneling section, a hollow part is formed in the center of the cutter heads to form annular excavation, and compared with full-section excavation, the machine head tunneling torque is reduced, so that the power output of the driving device is reduced, namely the volume and the weight of the driving device are reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a front view of an assembly structure according to an embodiment of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is an enlarged view of a portion of the upper portion of fig. 1.

Fig. 5 is a schematic view of the structure of fig. 2 in which two driving devices are installed.

FIG. 6 is a schematic view of a usage status of an embodiment of the present invention; and

fig. 7 is a right side view of fig. 6.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, the utility model discloses a tunneling machine head for construction is pushed up to secret culvert pipe top comprises tunnelling blade disc, organism, drive arrangement etc. wherein the organism is including a fixed cylinder external member 5, a rotatory section of thick bamboo external member 3.

The fixed barrel assembly 5 is a cylindrical member, an annular first boss 51 is provided at the head of the fixed barrel assembly 5, the annular first boss 51 is similar to a flange fixed at the head of the fixed barrel assembly 5, and an annular plane at the end of the annular first boss 51 is provided with a mounting groove of the flat bearing 4.

Be equipped with radial positioning's centering subassembly on the cylinder outer peripheral edge of fixed cylinder external member 5, centering subassembly comprises the fixed centering post 52 of length of stretching out and the adjustable regulation post 55 of length of stretching out, be close 5 head positions of fixed cylinder external member and be connected with three sets of centering posts 52 along outer peripheral edge circumference equipartition, the centering diameter that each centering post 52 length of stretching out confirmed is less than the inner diameter of the culvert pipe of installing slightly, be close to 5 afterbody positions of fixed cylinder external member and be connected with 6 sets of regulation posts 55 along outer peripheral edge circumference equipartition, adjust post 55 include a fixing base of connection on fixed cylinder external member 5 and a screw rod with this fixing base screwed connection, adjust screw rod, can be in order to adjust the flexible length of adjusting post 55.

In addition, an installation seat 54 with internal threads for installing the installation plate 9 and a bracket 101 for supporting the discharging hopper 100 are connected to the outer periphery of the tail position of the fixed cylinder kit 5, and an installation groove of the radial bearing 6 is processed on the inner periphery of the tail position of the fixed cylinder kit 5.

The shape of the rotary cylinder set 3 is similar to that of the fixed cylinder set 5, the head position is also provided with an annular second boss 31, and an installation groove of the plane bearing 4 is processed on an annular plane close to the inner side of the end part of the annular second boss 31, and the installation groove corresponds to an installation groove on the outer side of the end part of the annular first boss 51 and is used for installing the plane bearing 4.

The inner periphery of the front part of the rotating barrel kit 3 is provided with a plurality of material baffle plates 33 which are spirally arranged along the axial direction, the material baffle plates 33 are uniformly distributed and connected along the inner periphery, and the spirally arranged direction enables the rotationally stirred muck to fall backwards. This embodiment provides 8 sets of striker plates 33. An annular gear ring 7 is connected to the inner peripheral edge of the tail part of the rotary barrel set 3 through bolts 71. The outer peripheral edge position of the afterbody of rotatory section of thick bamboo external member 3 is processed there is radial bearing 6's mounting groove, and this mounting groove corresponds with the mounting groove of the outer peripheral edge position processing of the afterbody of fixed section of thick bamboo external member 5 for install radial bearing 6. On the outer circumference of the cylinder at the position adjacent to the inner ring of the radial bearing 6, positioning clips 32 for axial positioning of the radial bearing 6 are movably connected by bolts, and more than 3 groups of the positioning clips 32 are preferably uniformly distributed along the outer circumference of the cylinder.

During installation, the rotating cylinder sleeve 3 is sleeved into the fixed cylinder sleeve 5 and is coaxially connected with the fixed cylinder sleeve 5 through the plane bearing 4 and the radial bearing 6.

The heading cutter head comprises a cutter seat 2, a cutter head 1 and a second boss 31 on a rotating cylinder sleeve 3, the cutter seat 2 is a structural part, one end of the cutter seat is connected with the cutter head 1 through a bolt 11, the other end of the cutter seat is fixedly connected to the annular ring plane at the end part of the second boss 31, a plurality of groups of cutter seats 2 are uniformly distributed along the annular ring plane at the end part of the second boss 31, each group of cutter seats 2 are radially and uniformly distributed along the axis of the rotating cylinder sleeve 3, and 4 groups of cutter seats 2 are uniformly distributed in the embodiment.

The tool bit 1 is made of high-hardness and high-wear-resistance alloy steel, the specific shape of the tool bit 1 can be designed and determined according to the tunneling geological condition, and the tool bit 1 is preferably adjustable in position on the tool apron 2 along the radial direction of a tunneling section, namely when the tool bit 1 is installed and fixed, the diameter of the tunneling section of the tool bit 1 is ensured to be larger than the outer diameter of a laid culvert pipe.

The cutter heads 1 are not continuously distributed along the tunneling section, a hollow part 20 is formed in the center, namely the cutter heads 1 cut rock soil, not full-section excavation, but annular excavation, an un-excavated area is formed in the center of the tunneling section, and the advantage of the annular excavation relative to the full-section excavation is that the power output of the driving device 8 can be reduced, so that the volume and the weight of the driving device 8 are reduced. For soft soil or gravel soil layers, the slag soil in the area which is not excavated in the center can naturally fall off, for the rock layer, the area which is not excavated can possibly produce rock bulges, but the rock bulges form cantilevers along with the continuation of the excavation, and when the convex cantilevers reach a certain length, the rocks can easily fall off through external force or disturbance generated by the excavation.

The drive means 8 comprises a motor 81, a reducer 82, and a gear 83 connected to the output shaft. The motors 81 are preferably integrated with the speed reducer 82 so that they are compact and take up little space. The driving device 8 is vertically installed and fixed on one side of the inner part of the rotary drum suite 3 through the installation plate 9, and the gear 83 on the output shaft is meshed with the annular gear ring 7. The mounting plate 9 is in a right-angle shape, wherein one right-angle side is connected with a flange of the motor 81 through a bolt 84, and the other right-angle side is connected on the mounting seat 54 of the fixed barrel suite 5 through a bolt 53.

Since the driving device 8 is fixed to one side of the rotary drum kit 3 through the mounting plate 9, a hollow space is formed in the middle rear portion of the rotary drum kit 3, and the hollow space constitutes a muck conveying passage for facilitating backward discharge of muck.

In other embodiments, the drive device 8 may also be a hydrodynamic torque converter, serving the same purpose.

In this embodiment, a set of driving devices 8 is installed to meet the driving requirements of soft soil and sandy soil, when the site construction encounters an emergency such as hard rock and the like and cannot meet the power requirements, one or more sets of driving devices 8 can be rapidly added on the site, and fig. 5 shows the situation of installing two sets of driving devices 8. The output torque can be increased by simultaneously meshing the gears 83 on the output shafts of one or more groups of driving devices 8 with the annular gear ring 7, and the power of the driving devices 8 is effectively matched with the actual working condition by adjusting the installation number of the driving devices 8. For example, the input power for tunneling hard rock needs 10 kilowatts, the input power for tunneling soft soil or sandstone soil needs 5 kilowatts, the input power of a machine head with constant power needs 10 kilowatts, when the machine head is used for tunneling soft soil or sandstone soil, only 5 kilowatts are needed, 5 kilowatts are wasted, and the utilization rate of the input power is reduced.

When the drive device 8 is added, the number of mounting seats 54 and the number of supplemental mounting plates 9 need only be reserved on the fixing sleeve 3 in advance.

In order to make the dregs that the tool bit 1 tunnels and produce concentrate orderly discharge operation face outside be convenient for transport, still be provided with ejection of compact funnel 100, this ejection of compact funnel 100 has curved row's silo, the slope sets up the hollow space position at rotatory sleeve part 3, the front end of ejection of compact funnel 100 is located the hollow space position of rotatory sleeve part 3 and is close to tool bit 1 operation face promptly, the rear end downward sloping of ejection of compact funnel 100 stretches out outside the 3 tip of rotatory sleeve part, ejection of compact funnel 100 is fixed through connecting the support 101 at 5 afterbody of solid fixed cylinder external member.

The fixed cylinder kit 5, the rotary cylinder kit 3, the discharging hopper, the tool apron 2, the tool bit 1 and other structural components are all made of metal materials.

The use principle is as follows:

referring to fig. 5 and fig. 6, the utility model discloses a tunnelling aircraft nose for construction is pushed away to secret culvert pipe top, in using, the fuselage of aircraft nose embolias first section top and pushes away in the culvert pipe 10, rotatory aircraft nose makes drive arrangement 8 arrange the top position of culvert pipe 10 in, the tip of cyclic annular first boss 51 overlap joint at the culvert pipe 10 tunnelling direction on the aircraft nose, the fuselage makes aircraft nose and culvert pipe 10 basically concentric through three group's centering post 52 of equipartition, adjust the spiral ejector pin of six group's regulation posts 55 respectively, the head top that makes each ejector pin stretch out is tight on culvert pipe 10 inner wall, through adjusting the post 55 with the firm consolidation of fixed cylinder external member 5 and culvert pipe together, the mounted position of adjustment tool bit 1, guarantee suitable tunnelling section diameter, the installation of aircraft nose and culvert pipe 10 has been accomplished from this.

When the excavator works, the driving device 8 is started, the gear 83 on the output shaft of the driving device 8 drives the gear ring 7, the rotary cylinder sleeve 3 connected with the gear ring 7, the cutter holder 2 connected with the rotary cylinder sleeve 3 and the cutter head 1 connected with the cutter holder 2 to rotate, and the culvert pipe 10 drives the cutter head to horizontally start tunneling operation under the action of axial external force. The rotatory dregs that stir of striker plate 33 that sets up in rotatory barrel external member 3 fall from the eminence and get into discharge hopper 100, outside the arc inclined groove discharge working face through discharge hopper 100, outside rethread conveyer or artifical shallow will the dregs discharge hole. If the emergency such as hard rock and the like can not meet the power requirement in the tunneling process of the machine head, one or more groups of driving devices 8 can be rapidly added through the mounting plate 9 on the spot.

During tunneling, axial jacking force generated by the exterior on the culvert pipe 10 is transmitted to the cutter head 1 through the annular first boss 51 on the fixed sleeve 5, the plane bearing 4, the annular second boss 31 on the rotary sleeve assembly 3 and the cutter holder 2 in sequence. The torque generated by the tunneling of the cutter head 1 is balanced by the friction force generated by the mandrils of the 6 groups of adjusting columns 55 tightly propping against the inner wall of the culvert pipe 10, and the overturning phenomenon of the machine head relative to the culvert pipe 10 can not occur. In extreme cases, the torque generated by the tunneling of the machine head may drive the first section of pushing culvert pipe 10 to rotate together, so that the normal work cannot be performed, in order to avoid the phenomenon, a section of protrusion may be fixedly connected to the lower part of the first section of pushing culvert pipe 10 along the axial direction of the outer wall, and the protrusion may be sunk into the soil layer to increase the rotation resistance of the pushing culvert pipe 10.

When the machine head is disassembled after the completion of the work, the machine head can be taken out only by loosening the spiral ejector rods of the adjusting columns 55 in sequence even if the machine head is separated from the culvert pipe 10.

Can see from the description of above embodiment, the utility model discloses a tunnelling aircraft nose for construction is pushed away to secret culvert pipe, the first boss 51 of annular through 5 head settings of solid fixed cylinder external member to and the outer peripheral edges of solid fixed cylinder external member 5 are equipped with radial positioning's centering subassembly, can install the tip of location pushing away culvert pipe 10 at first festival in convenient and fast ground, the regulation post 55 through centering subassembly can be in the same place aircraft nose and the top is pushed away culvert pipe 10 and is fixed effectively, prevent the upset accident of aircraft nose for culvert pipe 10 production. One or more groups of driving devices 8 are connected to one side of the rotating cylinder external member 3 through a mounting plate 9, a gear 83 on an output shaft of the driving device 8 is meshed with an annular gear ring 7 fixedly connected to the rotating cylinder external member 3, the side type arrangement structure mode can adjust the mounting number of the driving devices 8 according to the working load, so that the utilization rate of input power is improved, and hollow space in the rotating cylinder 3 forms a conveying channel to facilitate tunneling and discharging of muck. As the cutter heads 1 are not continuously distributed along the tunneling section, a hollow part 20 is formed in the center of each cutter head to form annular excavation, and compared with full-section excavation, the tunneling torque is reduced, so that the input power of the driving device 8 is reduced, namely the volume and the weight of the driving device 8 are reduced.

The utility model discloses a tunnelling aircraft nose has small light in weight, compact structure through the improvement to technical measure such as tool bit distribution, fuselage structure, drive arrangement mounted position, especially is fit for in the underground, small-size culvert pipe top pushes away the construction needs.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a tunnelling aircraft nose for construction is pushed away to secret culvert pipe top, comprises tunnelling blade disc, organism, drive arrangement, its characterized in that: the machine body comprises a fixed cylinder kit (5) and a rotary cylinder kit (3); the head part corresponding to the fixed barrel suite (5) is provided with an annular first boss (51), the head part corresponding to the rotary barrel suite (3) is provided with an annular second boss (31), the outer peripheral edge of the fixed barrel suite (5) is provided with a radially positioned centering assembly, the inner peripheral edge of the tail part of the rotary barrel suite (3) is connected with an annular gear ring (7), and the rotary barrel suite (3) is coaxially connected with the fixed barrel suite (5) through a bearing; one or more groups of driving devices (8) are connected to one side of the inner part of the rotary drum suite (3) through a mounting plate (9), and a gear (83) on an output shaft of the driving devices (8) is meshed with the annular gear ring (7).

2. The heading machine head for incremental launching of underground culvert pipes of claim 1, wherein: centering assembly is including stretching out fixed centering post (52) of length and stretching out adjustable regulation post (55), centering post (52) are located and are close on the outer peripheral edges of fixed section of thick bamboo external member (5) head, adjust post (55) and locate on the outer peripheral edges of fixed section of thick bamboo external member (5) afterbody, centering post (52) and regulation post (55) are at least along outer peripheral edges equipartition more than three groups.

3. The heading machine head for incremental launching of underground culvert pipes of claim 1, wherein: rotatory barrel external member (3) front portion internal periphery is equipped with many striker plates (33) along axial direction spiral arrangement, striker plate (33) are along the internal periphery equipartition.

4. The heading machine head for incremental launching of underground culvert pipes of claim 3, characterized in that: the discharging device also comprises a discharging funnel (100) which is connected to the fixed barrel kit (5) and is obliquely positioned in the hollow part of the rotary barrel kit (3).

5. The heading machine head for incremental launching of underground culvert pipes of claim 1, wherein: the bearing comprises a plane bearing (4) and a radial bearing (6), the plane bearing (4) is installed between the first boss (51) and the second boss (31), and the radial bearing (6) is installed between the tail parts of the fixed cylinder sleeve piece (5) and the rotating cylinder sleeve piece (3).

6. The heading machine head for incremental launching of underground culvert pipes of claim 1, wherein: the tunneling cutter head comprises a cutter seat (2), a cutter head (1) and a second boss (31) on the rotating cylinder sleeve piece (3), one end of the cutter seat (2) is connected with the second boss (31), and the other end of the cutter head is connected with the cutter head (1).

7. The heading machine head for incremental launching of underground culvert pipes of claim 6, wherein: the cutter heads (1) are not continuously distributed along the tunneling section, and a hollow part (20) is arranged in the center of the cutter heads.

8. A heading head for incremental launching of an underground culvert pipe according to any of claims 1 to 7, characterized in that: the drive device (8) comprises a hydrodynamic torque converter or an integrated motor reducer.

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