CN214944275U

CN214944275U - Can expand and dig hard rock tunnel boring machine

Info

Publication number: CN214944275U
Application number: CN202120501067.9U
Authority: CN
Inventors: 陈凯军; 李光明; 迟德超; 王恩洋; 范婷婷; 范海花; 李宁; 杨红艳; 惠祎; 徐志鹏
Original assignee: Shandong Hi Speed Engineering Construction Group Co Ltd
Current assignee: Shandong Hi Speed Engineering Construction Group Co Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-11-30
Anticipated expiration: 2031-03-09

Abstract

The utility model relates to a can expand and dig hard rock tunnel boring machine belongs to the technical field of entry driving machine, and it includes supplementary blade disc, driving piece and sleeve, the sleeve is coaxial to be slided on the girder, the driving piece sets up on the girder for the telescopic sliding of drive, it has the connecting rod to rotate on the sleeve, the connecting rod is connected with supplementary blade disc, supplementary blade disc can with the blade disc joint, it has a plurality of supplementary hobbing cutters to rotate on the supplementary blade disc. When the tunnel that the diameter is great needs to be excavated, the driving piece is started, the driving piece drives the sleeve to slide, so that the sleeve pushes the connecting rod to move, so that the auxiliary cutter head is clamped on the cutter head, so that when the cutter head rotates, the auxiliary cutter head is driven to rotate, so that the cutter head and the auxiliary cutter head jointly excavate the tunnel, and the diameter of the cutter head is expanded, so that the hard rock tunnel boring machine can dig the tunnel with a large diameter, and the applicability of the hard rock tunnel boring machine is improved.

Description

Can expand and dig hard rock tunnel boring machine

Technical Field

The application relates to the field of heading machines, in particular to a tunneling machine capable of expanding and excavating hard rock tunnels.

Background

At present, the construction of the internal and external large-diameter tunnels is commonly carried out by a drilling and blasting method and a full-face hard rock Tunnel Boring Machine (TBM). The drilling and blasting construction method has the disadvantages of high labor intensity, long construction period, high risk and the like. The full-face hard rock tunnel boring machine has the characteristics of quick construction, safety, high efficiency and the like, and is widely applied to tunnels of domestic railways, water conservancy, national defense and the like.

Referring to fig. 1 and 2, the related art discloses a hard rock tunnel boring machine heading machine, which includes a main beam 100, a cutter head 200 and a mounting disc 300, wherein the mounting disc 300 is coaxially fixed on the main beam 100, the cutter head 200 coaxially rotates on the main beam 100, the diameter of the cutter head 200 is larger than that of the mounting disc 300, and a plurality of hobbing cutters 220 are rotated on one end surface of the cutter head 200. An annular cavity is formed in the cutter head 200, and a blanking port 230 communicated with the cavity is formed in the side wall of the cutter head 200 along the circumferential direction. A plurality of driving motors 310 are fixed to an end surface of the mounting plate 300, and driving gears 311 are coaxially welded to output shafts of the driving motors 310. A driven gear 320 is coaxially fixed to the other end surface of the cutter head 200, and a drive gear 311 is engaged with the driven gear 320. During operation, start driving motor 310, driving motor 310 drives the rotation of driving gear 311, and then drives driven gear 320's rotation to make blade disc 200 carousel, carry out the excavation in tunnel, the disintegrating slag in the excavation falls into to blanking mouth 230 in, and then arranges outside the mounting disc 300.

In view of the above-mentioned related technologies, the inventor believes that the cutterhead 200 has a certain diameter, and therefore is only suitable for tunnels with the same diameter, and cannot meet the requirements of tunnels with different diameters, so that the application range of the hard rock tunnel boring machine is small.

SUMMERY OF THE UTILITY MODEL

In order to improve hard rock tunnel boring machine's application scope, this application provides one kind can expand and dig hard rock tunnel boring machine.

The application provides a can expand and dig hard rock tunnel boring machine adopts following technical scheme:

the utility model provides a can expand and dig hard rock tunnel boring machine, includes supplementary blade disc, driving piece and sleeve, the sleeve is coaxial to slide on the girder, the driving piece sets up on the girder for the telescopic sliding of drive, it has the connecting rod to rotate on the sleeve, the connecting rod is connected with supplementary blade disc, supplementary blade disc can with the blade disc joint, it has a plurality of supplementary hobbing cutters to rotate on the supplementary blade disc.

Through adopting above-mentioned technical scheme, when the great tunnel of diameter needs to be excavated, start the driving piece, the telescopic slip of driving piece drive, thereby make the removal of sleeve promotion connecting rod, thereby make supplementary blade disc joint on the blade disc, thereby when making the blade disc rotate, drive the rotation of supplementary blade disc, thereby make blade disc and supplementary blade disc excavate the tunnel jointly, owing to make the diameter of blade disc obtain expanding, make hard rock tunnel entry driving machine can dig into the tunnel of great diameter, consequently, the suitability of hard rock tunnel entry driving machine has been improved.

Optionally, the driving part is a driving hydraulic cylinder, the driving hydraulic cylinder is fixed on the main beam, and a piston rod of the driving hydraulic cylinder is fixedly connected with the sleeve.

Through adopting above-mentioned technical scheme, start drive hydraulic cylinder, drive hydraulic cylinder stretches to it moves to being close to blade disc department automatically to drive the sleeve, thereby makes supplementary blade disc joint in the blade disc, has saved the manpower, and easy operation.

Optionally, the auxiliary cutter head is fixed with a circular clamping block, a circular clamping groove is formed in the end face of the cutter head, and the clamping block can be clamped in the clamping groove.

Through adopting above-mentioned technical scheme, through setting up the circular shape joint piece, the purpose is when the blade disc drives supplementary blade disc and rotates, can improve the stability of being connected between supplementary blade disc and the blade disc.

Optionally, a ball bearing is coaxially sleeved on the main beam, an inner ring of the ball bearing is fixedly connected with the sleeve, and the connecting rod is connected with the end face of an outer ring of the ball bearing.

Through adopting above-mentioned technical scheme, when the blade disc rotates, drive the rotation of supplementary blade disc to drive the rotation of connecting rod, set up ball bearing's purpose, the rotation of the connecting rod of being convenient for.

Optionally, the auxiliary cutter head is detachably connected with the connecting rod.

Through adopting above-mentioned technical scheme, set up the purpose that supplementary blade disc can dismantle with the connecting rod and be connected, can make things convenient for the change and the maintenance to supplementary blade disc.

Optionally, the auxiliary cutter head is provided with a connecting groove along the circumferential direction, the connecting rod is fixed with a connecting block, the connecting block can be clamped in the connecting groove, the auxiliary cutter head is fixed with a connecting bolt, the connecting bolt can pass through the connecting block, and the connecting bolt is connected with a connecting nut in a threaded manner.

Through adopting above-mentioned technical scheme, with connecting block joint back in the spread groove, connecting bolt passes the connecting block simultaneously, then goes up coupling nut for coupling nut locks the connecting bolt connecting block, thereby be convenient for connecting block and supplementary blade disc's dismantlement and installation.

Optionally, the connecting rod is detachably connected with the ball bearing.

Through adopting above-mentioned technical scheme, because the connecting rod can be dismantled with ball bearing and be connected, consequently can change the angle of connecting rod for the connecting rod can support the supplementary blade disc of different diameters.

Optionally, a locking rod is fixed on the outer ring of the ball bearing, a locking plate slides on the end face of the outer ring of the ball bearing, the connecting rod and the locking plate can be arranged on the locking rod in a penetrating manner, and a locking nut is connected to the locking rod in a threaded manner.

Through adopting above-mentioned technical scheme, wear to arrange the connecting rod in the check lock on the check lock, then the locking plate slides for on the connecting rod wears to arrange the locking plate in, then screwed up lock nut, make lock nut lock the connecting rod, thereby be convenient for connecting rod and ball bearing's dismantlement and installation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the auxiliary cutter head is arranged to slide with the main beam and is clamped with the cutter head, the auxiliary cutter head is driven to move by the driving piece, so that the auxiliary cutter head is clamped with the cutter head, the integral diameter of the cutter head is enlarged, the hard rock tunnel boring machine can be excavated into a tunnel with a larger diameter, and the applicability of the hard rock tunnel boring machine is improved;

2. the connecting rod is detachably connected with the auxiliary cutter head, so that the auxiliary cutter head can be conveniently and independently replaced and maintained;

3. the purpose of connecting the connecting rod and the ball bearing can be dismantled is that, because the connecting rod can be dismantled with the ball bearing and be connected, consequently can change the angle of connecting rod for the connecting rod can support the supplementary blade disc of different diameters.

Drawings

Fig. 1 is a schematic view of the overall structure of a hard rock tunnel boring machine of the related art.

Fig. 2 is an exploded view showing a coupling structure between a cutter head and a mounting plate in the related art.

Fig. 3 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 4 is a schematic view showing the structure on the main beam after hiding the auxiliary cutter head, the cutter head and the mounting disc.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Fig. 6 is an exploded view showing a clamping structure between the auxiliary cutter head and the cutter head.

Description of reference numerals: 100. a main beam; 200. a cutter head; 210. a clamping groove; 220. a hobbing cutter; 230. a blanking port; 300. mounting a disc; 310. a drive motor; 311. a driving gear; 320. a driven gear; 400. an auxiliary cutter head; 410. connecting grooves; 420. connecting blocks; 430. a connecting bolt; 440. a connecting nut; 460. An auxiliary hobbing cutter; 470. a slag inlet; 500. a sleeve; 510. a connecting rod; 520. a ball bearing; 521. a locking lever; 522. a locking plate; 523. locking the nut; 600. a drive member.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses can expand and dig hard rock tunnel boring machine.

Referring to fig. 3, the expandable hard rock tunnel boring machine includes an auxiliary cutter head 400, a sleeve 500 and a driving member 600, the sleeve 500 coaxially slides on the main beam 100, a connecting rod 510 is rotatably provided on the sleeve 500, and one end of the connecting rod 510, which is far from the sleeve 500, is detachably connected to the auxiliary cutter head 400. The driving member 600 is disposed on the main beam 100 for driving the sliding movement of the sleeve 500. The auxiliary cutter head 400 can be engaged with the cutter head 200. The end face of the auxiliary cutter head 400 is provided with a plurality of auxiliary hobbing cutters 460 in a rotating manner, and the side wall of the auxiliary cutter head 400 is provided with a slag inlet 470 along the circumferential direction thereof, and the slag inlet 470 is communicated with the cavity in the cutter head 200.

The driving member 600 is a driving hydraulic cylinder, which is mounted on the main beam 100 by bolts and has an axis parallel to the axis of the main beam 100. The piston rod of the driving hydraulic cylinder is fixedly connected with the sleeve 500, and the driving hydraulic cylinder is powered by the hydraulic pump.

Referring to fig. 4, in order to realize the rotation of the connecting rod 510 and the sleeve 500, a ball bearing 520 is coaxially sleeved on the main beam 100, an inner ring of the ball bearing 520 is fixedly connected with the sleeve 500, and the connecting rod 510 is detachably connected with the ball bearing 520.

Referring to fig. 5, in order to accomplish the detachable connection of the connecting rod 510 to the ball bearing 520, the outer ring end surface of the ball bearing 520 is provided with two locking plates 522, wherein one locking plate 522 is fixed to the outer ring end surface of the ball bearing 520 and the locking lever 521 is fixed thereto. Another locking plate 522 slides on the outer ring end surface of the ball bearing 520. The connecting rod 510 and the locking plate 522 can be inserted into the locking rod 521, and the locking rod 521 is threadedly connected with a locking nut 523 to lock the connecting rod 510.

Referring to fig. 4 and 6, in order to detachably connect the connecting rod 510 and the auxiliary cutter head 400, the end surface of the auxiliary cutter head 400 is uniformly provided with connecting grooves 410 along the circumferential direction thereof, the connecting rod 510 is welded with a connecting block 420, and the connecting block 420 can be clamped in the connecting grooves 410. The coupling groove 410 is provided at both sides thereof with coupling bolts 430, and the coupling bolts 430 are welded to the auxiliary cutter head 400. The connection bolt 430 may pass through the connection block 420, and a connection nut 440 is threadedly coupled to the connection bolt 430 through one end of the connection block 420 to lock the connection block 420.

In order to realize the clamping connection between the auxiliary cutter head 400 and the cutter head 200, an annular clamping block (not shown in the figure) is welded on the auxiliary cutter head 400, an annular clamping groove 210 is formed in the end face of the cutter head 200, and the clamping block can be clamped in the clamping groove 210.

The implementation principle of the tunneling machine capable of expanding and excavating hard rock tunnels in the embodiment of the application is as follows: when the diameter of the tunnel is required to be larger, the driving hydraulic cylinder is started to stretch, so that the sleeve 500 is driven to move, the connecting rod 510 pushes the auxiliary cutter head 400 to move, the clamping block is clamped in the clamping groove 210, and the diameter of the cutter head 200 is expanded;

then, the driving motor 310 is started, the driving motor 310 drives the driving gear 311 to rotate, the driving gear 311 drives the driven gear 320 to rotate, and further drives the cutter head 200 to rotate, and the cutter head 200 drives the auxiliary cutter head 400 to rotate, so that the tunnel excavation operation is performed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a can expand and dig hard rock tunnel boring machine which characterized in that: including supplementary blade disc (400), driving piece (600) and sleeve (500), sleeve (500) are coaxial to slide on girder (100), driving piece (600) set up on girder (100) for the sliding of drive sleeve (500), it has connecting rod (510) to rotate on sleeve (500), connecting rod (510) are connected with supplementary blade disc (400), supplementary blade disc (400) can with blade disc (200) joint, it has a plurality of supplementary hobbing cutter (460) to rotate on supplementary blade disc (400).

2. An expandable hard rock tunnel boring machine according to claim 1, wherein: the driving piece (600) is a driving hydraulic cylinder, the driving hydraulic cylinder is fixed on the main beam (100), and a piston rod of the driving hydraulic cylinder is fixedly connected with the sleeve (500).

3. An expandable hard rock tunnel boring machine according to claim 2, wherein: the auxiliary cutter head (400) is fixed with an annular clamping block, an annular clamping groove (210) is formed in the end face of the cutter head (200), and the clamping block can be clamped in the clamping groove (210).

4. An expandable hard rock tunnel boring machine according to claim 3, wherein: the main beam (100) is coaxially sleeved with a ball bearing (520), an inner ring of the ball bearing (520) is fixedly connected with the sleeve (500), and the connecting rod (510) is connected with the end face of an outer ring of the ball bearing (520).

5. An expandable hard rock tunnel boring machine according to any one of claims 1 to 3, wherein: the auxiliary cutter head (400) is detachably connected with the connecting rod (510).

6. An expandable hard rock tunnel boring machine according to claim 5, wherein: connecting groove (410) have been seted up along its circumference in supplementary blade disc (400), be fixed with connecting block (420) on connecting rod (510), but connecting block (420) joint in connecting groove (410), be fixed with connecting bolt (430) on supplementary blade disc (400), connecting block (420) can be passed in connecting bolt (430), threaded connection has coupling nut (440) on connecting bolt (430).

7. An expandable hard rock tunnel boring machine according to any one of claims 1 to 3, wherein: the connecting rod (510) is detachably connected with the ball bearing (520).

8. An expandable hard rock tunnel boring machine according to claim 7, wherein: the locking device is characterized in that a locking rod (521) is fixed on an outer ring of the ball bearing (520), a locking plate (522) slides on the end face of the outer ring of the ball bearing (520), the connecting rod (510) and the locking plate (522) can penetrate through the locking rod (521), and a locking nut (523) is connected to the locking rod (521) in a threaded manner.