Lateral thrust mechanism and large-gradient heading machine

Abstract

The invention belongs to the technical field of cantilever type heading machines, and particularly relates to a side thrust mechanism and a large-gradient heading machine. The side pushing mechanism comprises a mounting seat, a supporting arm, an adjusting oil cylinder and a supporting seat; the mounting seat is fixedly connected with the heading machine; the mounting seat is a carrier of the side pushing mechanism; the supporting arm comprises a plurality of sections of telescopic supporting arms, the first section of supporting arm of the supporting arm is hinged to the mounting base through a first cross-shaped connector, and the tail section of supporting arm of the supporting arm is connected with the supporting base through a spherical hinge structure; the upper side and the lower side of the supporting base are each provided with an adjusting oil cylinder, one end of each adjusting oil cylinder is hinged to the mounting base through a second cross-shaped connector, and the other end of each adjusting oil cylinder is hinged to the supporting base through a third cross-shaped connector. By means of the side pushing mechanism, the gradeability of the heading machine can be improved, the heading machine can walk on a large slope or a argillization bottom plate and conduct slotting operation on hard rocks, and therefore the problem that the heading machine walks and conducts slotting under the complex geological working condition within the 20-degree slope range is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of cantilever type tunnel boring machines, and in particular relates to a side thrust mechanism and a steep slope tunnel boring machine. Background Art

[0002] At present, cantilevered roadheaders are generally suitable for tunneling in slopes between ±18°. When the slope increases or the rock hardness increases, the slope resistance of the roadheader increases, the walking resistance increases, and the roadheader lacks climbing power, which makes it difficult for the roadheader to walk, thus affecting the normal use of the roadheader. To address this problem, an external auxiliary push-pull method is generally used to overcome the resistance so that the cantilevered roadheader can walk and work normally on large slopes.

[0003] The utility model with announcement number CN205172575U discloses an auxiliary traction device, which is arranged on a tunnel boring machine. The auxiliary traction device includes: a universal shaft structure, which is arranged on the rear support of the tunnel boring machine; a cylinder, which is connected to the universal shaft structure; a supporter, one end of which is connected to the cylinder, and the other end supports the ground with a support point; when the tunnel boring machine travels on a large slope, the supporter supports the ground under the action of the cylinder, providing auxiliary traction for the tunnel boring machine.

[0004] In the above-mentioned auxiliary traction device, the support relies on gravity to penetrate into the bottom plate, and the fixing effect is poor. Moreover, as the tunnel boring machine moves, when the tunnel boring machine swings laterally, the support will be driven to swing together through the universal joint and the cylinder, thereby loosening the anchor point, and even causing the support to slide as the cylinder extends, affecting the movement of the tunnel boring machine. Summary of the invention

[0005] The invention aims to solve the problem of a tunnel boring machine traveling and cutting grooves in complex geological conditions within a slope range of 20 degrees.

[0006] The present invention provides the following technical solution: a side-pushing mechanism, comprising a mounting seat, a support arm, an adjusting oil cylinder and a support seat;

[0007] The mounting seat is used for fixed connection with the tunnel boring machine; the mounting seat is a carrier of the side push mechanism; the support arm includes a plurality of retractable support arms, the first support arm of the support arm is hinged to the mounting seat through a first cross connector, and the last support arm of the support arm is connected to the support seat through a ball joint structure;

[0008] An adjusting oil cylinder is respectively arranged on the upper and lower sides of the support seat, one end of the adjusting oil cylinder is hinged to the mounting seat through the second cross connector, and the other end is hinged to the support seat through the third cross connector;

[0009] In the horizontal direction, the adjusting cylinders on the upper and lower sides are cross-shaped with the support arm, and the connecting end of the adjusting cylinder and the mounting seat is located on the inner side of the support arm, and the connecting end with the support seat is located on the outer side of the support arm; in the vertical direction, the connecting end of the adjusting cylinder and the support seat is close to the support arm, and the connecting end with the mounting seat is far away from the support arm.

[0010] Furthermore, one side of the support seat is a curved surface with a high middle and a low periphery, and anchor nails are distributed on the curved surface; the other side is provided with a hemispherical hole, threaded holes are provided around the hemispherical hole, and two ear plates are provided offset from the center of the hemispherical hole, and the two ear plates are symmetrical with the diameter of the hemispherical hole as the axis; the ear plate is hinged to the third cross connector.

[0011] Furthermore, the end of the last branch arm of the support arm is connected with a ball head through a square neck; the ball head is movably nested in the hemispherical hole of the support seat;

[0012] The support seat is connected with an axial limit plate, a rubber limit plate and a lateral limit plate to prevent the ball head from falling out of the hemispherical hole; the two axial limit plates are buckled on the support seat, and the centers of the two axial limit plates form a circular hole, the arc surface of the bottom edge of the circular hole is slidably connected with the ball head, and the aperture of the circular hole is larger than the diagonal length of the square neck; the two rubber limit plates are buckled on the axial limit plates, and the centers of the two rubber limit plates form a square hole, the four sides of the square hole fit with the square neck, and the two rubber limit plates elastically support the square neck; the two lateral limit plates are buckled on the rubber limit plates, and the centers of the two lateral limit plates form a square hole, and the inscribed circle of the square hole is larger than the circular hole in the center of the two axial limit plates; bolts are inserted into the lateral limit plates, the rubber limit plates and the axial limit plates to connect with the threaded holes of the support seat.

[0013] Furthermore, the support arm comprises a first section support arm and a second section support arm, the second section support arm is slidably nested in the first section support arm, and a push cylinder is connected between the first section support arm and the second section support arm.

[0014] Furthermore, the first section of the support arm and the second section of the support arm are both square tubes.

[0015] A steep slope tunnel boring machine comprises a tunnel boring machine, wherein a set of side push mechanisms are respectively installed on the left and right sides of a body of the tunnel boring machine, and a mounting seat of the side push mechanism is fixed to the body of the tunnel boring machine by bolts, and the side push mechanisms on the left and right sides of the body of the tunnel boring machine are symmetrical.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The side-pushing mechanism can improve the climbing ability of the tunnel boring machine, enable the tunnel boring machine to travel on a larger slope or muddy bottom plate and dig grooves in harder rocks, thereby solving the problem of tunnel boring machine traveling and digging grooves in complex geological conditions with a slope range of 20°.

[0018] One end of the second support arm is designed as a ball head to ensure that the support seat can rotate in any direction; the connecting neck of the ball head is square, which can make the rubber limit plate and the lateral limit plate touch the square neck limit to obtain better force and limiting effects.

[0019] The support seat is a curved surface with a high middle and low periphery. Firstly, it can adapt to the unevenness of the tunnel side, and secondly, it can ensure that the support seat can obtain a better stress state when it is close to the tunnel side within a controllable angle range. Anchor nails are arranged on the curved surface, which can increase the stability of the support seat after tightly supporting the tunnel.

[0020] The interior of the axial limit plate is a semicircular arc, which can limit the axial movement of the ball head; there is a semi-square hole on the rubber limit plate, which is close to the square neck and weakly limits the support seat to prevent the support seat from swinging up and down or left and right when the device is swinging; there is a semi-square hole on the lateral limit plate, which can limit the up and down and left and right swing range of the support seat, which is conducive to adjusting the oil cylinder to press the support seat so that the support seat anchor nails penetrate into the side of the tunnel to fix the support seat, providing a stable anchor point for pushing the oil cylinder to push the tunnel boring machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a side push mechanism;

[0022] Figure 2 It is a schematic diagram of the working state of a large-slope tunnel boring machine;

[0023] Figure 3 is a schematic diagram of the second support arm;

[0024] Figure 4 is a schematic diagram of the support base (front view);

[0025] Figure 5 This is a schematic diagram of the support base (back side);

[0026] Figure 6 It is a schematic diagram of the coordination of the support seat, axial limit plate, rubber limit plate and lateral limit plate.

[0027] In the figure: 1-mounting seat; 2-first cross connector; 3-first section of support arm; 4-second section of support arm; 4.1-ball head; 4.2-square neck; 5-pushing cylinder; 6-adjusting cylinder; 7-support seat; 7.1-anchor; 7.2-curved surface; 7.3-ear plate; 7.4-ball hole; 7.5-threaded hole; 8-axial limit plate; 9-rubber limit plate; 10-lateral limit plate; 11-left push mechanism; 12-right push mechanism; 13-tunneling machine; 14-tunnel side; 15-second cross connector; 16-third cross connector. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Example 1

[0030] like Figure 1 , Figure 2 As shown: a side-pushing mechanism comprises a mounting seat 1, a support arm, an adjusting cylinder 6 and a support seat 7; the mounting seat 1 is used for fixed connection with a tunnel boring machine 13; the mounting seat 1 is a carrier of the side-pushing mechanism; the support arm comprises a plurality of retractable support arms, the first support arm of the support arm is hinged to the mounting seat 1 through a first cross connector 2, and the last support arm of the support arm is connected to the support seat 7 through a ball joint structure.

[0031] There is an adjusting cylinder 6 on each of the upper and lower sides of the support seat 7, one end of the adjusting cylinder 6 is hinged to the mounting seat 1 through the second cross connector 15, and the other end is hinged to the support seat 7 through the third cross connector 16; in the horizontal direction, the adjusting cylinders 6 on the upper and lower sides are X-crossed with the support arm, and the connecting end of the adjusting cylinder 6 and the mounting seat 1 is located on the inner side of the support arm, and the connecting end with the support seat 7 is located on the outer side of the support arm, and the outer and inner sides are referenced to the side push mechanism installed on the tunnel boring machine; in the vertical direction, the connecting ends of the adjusting cylinders 6 on the upper and lower sides and the support seat 7 are close to the support arm, and the connecting ends with the mounting seat 1 are far away from the support arm.

[0032] The support seat 7 can be moved up and down, left and right by flexibly adjusting the extension and contraction of the upper and lower adjustment cylinders 6. At the same time, the support seat 7 also drives the support arm to swing up and down, left and right due to the limit constraints of the support arm.

[0033] like Figure 4 , Figure 5 As shown: one side of the support seat 7 is a curved surface 7.2 which is high in the middle and low at the periphery. Firstly, it can adapt to the unevenness of the side of the tunnel. Secondly, it can ensure that the support seat 7 can obtain a better stress state when it is close to the side of the tunnel within a controllable angle range. Anchor nails 7.1 are distributed on the curved surface 7.2, which can increase the stability of the support seat after tightly supporting the tunnel; the other side is provided with a hemispherical hole 7.4, threaded holes 7.5 are provided around the hemispherical hole 7.4, and two ear plates 7.3 are provided away from the center of the hemispherical hole 7.4. The two ear plates 7.3 are symmetrical with the diameter of the hemispherical hole 7.4 as the axis; the ear plate 7.3 is hinged to the third cross connector 16.

[0034] like Figure 3As shown: the end of the last branch arm of the support arm is connected to a ball head 4.1 through a square neck 4.2; the ball head 4.1 is movably nested in the hemispherical hole 7.4 of the support seat 7.

[0035] like Figure 6 As shown: the support seat 7 is connected with an axial limit plate 8, a rubber limit plate 9 and a lateral limit plate 10 to prevent the ball head 4.1 from coming out of the hemispherical hole 7.4; the two axial limit plates 8 are buckled on the support seat 7, and the centers of the two axial limit plates 8 form a circular hole, the arc surface of the bottom edge of the circular hole is slidably connected with the ball head 4.1, and the aperture of the circular hole is larger than the diagonal length of the square neck 4.2; the two axial limit plates 8 can limit the axial movement of the ball head 4.1, and reserve activity space for the square neck 4.2, so that the support seat 7 can swing; the two rubber limit plates 9 are buckled on the axial limit plates 8, and the centers of the two rubber limit plates 9 form a square hole, the four sides of the square hole are in contact with the square neck 4.2, and the two rubber limit plates 9 elastically support the square neck 4.2; The two rubber limit plates 9 weakly limit the support seat 7 to prevent the support seat 7 from swinging up and down or left and right when the device is in a swinging state; the two lateral limit plates 10 are buckled on the rubber limit plates 9, and the centers of the two lateral limit plates 10 form a square hole. The inscribed circle of the square hole is larger than the circular hole in the center of the two axial limit plates 8, which reserves a movable space for the square neck 4.2 and can limit the upward and downward and left and right swinging range of the support seat 7 at the same time, which is conducive to adjusting the oil cylinder 6 to press the support seat 7 so that the anchor nail 7.1 of the support seat 7 is inserted into the side of the tunnel to fix the support seat 7, providing a stable anchoring point for the push cylinder 5 to push the tunnel boring machine; bolts are inserted into the lateral limit plates 10, the rubber limit plates 9 and the axial limit plates 8 to connect with the threaded holes 7.5 of the support seat 7.

[0036] The support arm comprises a first section support arm 3 and a second section support arm 4 . The second section support arm 4 is slidably nested in the first section support arm 3 . A push cylinder 5 is connected between the first section support arm 3 and the second section support arm 4 .

[0037] The first section arm 3 and the second section arm 4 of the support arm are both square tubes.

[0038] Example 2

[0039] A steep-slope tunnel boring machine includes a tunnel boring machine 13, wherein a set of side-pushing mechanisms of Example 1 are respectively installed on the left and right sides of a body of the tunnel boring machine 13, and a mounting seat 1 of the side-pushing mechanism is fixed to the body of the tunnel boring machine by bolts, and the side-pushing mechanisms on the left and right sides of the body of the tunnel boring machine are symmetrical.

[0040] When the tunnel boring machine has difficulty moving uphill or in a muddy tunnel, the push cylinder 5 is in a retracted or semi-retracted state, and the two adjusting cylinders 6 are operated to extend, pushing the support seat 7 and driving the first support arm 3 and the second support arm 4 to swing at the same time, until the support seat 7 is close to the side of the tunnel, and then the cylinder thrust is adjusted to overcome the weak limiting force of the rubber limit plate 9, and the support seat 7 continues to swing and press the two sides of the tunnel. The support seat 7 can swing to the maximum extent that the lateral limit plate 10 touches the square neck 4.2 of the second support arm 4 to generate a limit.

[0041] The traveling motor of the tunnel boring machine is started, and the push cylinder 5 and the regulating cylinder 6 are extended synchronously to assist in pushing the tunnel boring machine forward.

[0042] When the side push mechanism is not working, the push cylinder 5 and the regulating cylinder 6 are retracted until the side push mechanism is close to the two sides of the body of the tunnel boring machine.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A side push mechanism, characterized in that: It comprises a mounting seat (1), a supporting arm, an adjusting oil cylinder (6) and a supporting seat (7); The mounting seat (1) is used for fixed connection with the tunnel boring machine (13); the mounting seat (1) is a carrier of the side thrust mechanism; the support arm comprises a plurality of telescopic support arms, the first support arm of the support arm is hinged to the mounting seat (1) via a first cross connector (2), and the last support arm of the support arm is connected to the support seat (7) via a ball joint structure; An adjusting oil cylinder (6) is respectively provided on the upper and lower sides of the support seat (7); one end of the adjusting oil cylinder (6) is hinged to the mounting seat (1) through a second cross connector (15), and the other end of the adjusting oil cylinder (6) is hinged to the support seat (7) through a third cross connector (16); In the horizontal direction, the adjusting oil cylinders (6) on the upper and lower sides and the support arm are intersected in an X shape, and the connection ends of the adjusting oil cylinders (6) and the mounting seat (1) are located inside the support arm, and the connection ends with the support seat (7) are located outside the support arm; in the vertical direction, the connection ends of the adjusting oil cylinders (6) and the support seat (7) on the upper and lower sides are close to the support arm, and the connection ends with the mounting seat (1) are far away from the support arm.

2. A side push mechanism according to claim 1, characterized in that: One side of the support seat (7) is a curved surface (7.2) with a high middle and low periphery, and anchor nails (7.1) are distributed on the curved surface (7.2); the other side is provided with a hemispherical hole (7.4), threaded holes (7.5) are provided around the hemispherical hole (7.4), and two ear plates (7.3) are provided away from the center of the hemispherical hole (7.4), and the two ear plates (7.3) are symmetrical with the diameter of the hemispherical hole (7.4) as the axis; the ear plate (7.3) is hinged to the third cross connector (16).

3. A side push mechanism according to claim 2, characterized in that: The end of the last branch arm of the support arm is connected to a ball head (4.1) via a square neck (4.2); the ball head (4.1) is movably nested in the hemispherical hole (7.4) of the support seat (7); The support seat (7) is connected with an axial limit plate (8), a rubber limit plate (9) and a lateral limit plate (10) to prevent the ball head (4.1) from coming out of the hemispherical hole (7.4); the two axial limit plates (8) are buckled on the support seat (7); the centers of the two axial limit plates (8) form a circular hole; the arc surface of the bottom edge of the circular hole is slidably connected with the ball head (4.1); the diameter of the circular hole is greater than the diagonal length of the square neck (4.2); the two rubber limit plates (9) are buckled on the axial limit plates (8); the two rubber limit plates (9) The center of the square hole is surrounded by four sides of the square hole, which fits the square neck (4.2), and the two rubber limit plates (9) elastically support the square neck (4.2); the two lateral limit plates (10) are buckled on the rubber limit plates (9), and the centers of the two lateral limit plates (10) are surrounded by a square hole, and the inscribed circle of the square hole is larger than the circular hole in the center of the two axial limit plates (8); bolts are inserted into the lateral limit plates (10), the rubber limit plates (9) and the axial limit plates (8) to connect with the threaded holes (7.5) of the support seat (7).

4. A side push mechanism according to claim 1, characterized in that: The support arm comprises a first section support arm (3) and a second section support arm (4); the second section support arm (4) is slidably nested in the first section support arm (3); and a push cylinder (5) is connected between the first section support arm (3) and the second section support arm (4).

5. A side push mechanism according to claim 4, characterized in that: The first support arm (3) and the second support arm (4) of the support arm are both square tubes.

6. A steep slope tunnel boring machine, characterized in that: It comprises a tunnel boring machine (13), wherein a set of side-pushing mechanisms as claimed in claim 3 are respectively installed on the left and right sides of a body of the tunnel boring machine (13), a mounting seat (1) of the side-pushing mechanism is fixed to the body of the tunnel boring machine by bolts, and the side-pushing mechanisms on the left and right sides of the body of the tunnel boring machine are symmetrical.

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