Vertical supporting and pushing mechanism and large-gradient heading machine

Abstract

The invention belongs to the technical field of cantilever type heading machines, and particularly relates to a vertical supporting and pushing mechanism and a large-gradient heading machine. Comprising a fixed seat, a traction arm and a vertical supporting beam, the traction arm is of a telescopic structure, the end of a first section of supporting arm of the traction arm is hinged to the fixing base through a cross-shaped connector I, the end of a tail section of supporting arm of the traction arm is hinged to the vertical supporting beam, a swing oil cylinder is connected between the vertical supporting beam and the traction arm, a bottom supporting oil cylinder assembly is arranged at the bottom of the vertical supporting beam, and a top supporting oil cylinder assembly is arranged at the top of the vertical supporting beam. An adjusting oil cylinder assembly is connected between the upper side and the lower side of the first section of support arm of the traction arm and the fixed seat, and the adjusting oil cylinder assembly is hinged to the fixed seat through a cross-shaped connector II and is hinged to the first section of support arm of the traction arm through a cross-shaped connector III; by means of the vertical supporting and pushing mechanism, the gradeability of the heading machine can be greatly improved, and the heading machine can walk on a large slope or a muddy bottom plate and conduct slotting operation on hard rocks.

Description

Technical Field

[0001] The invention belongs to the technical field of cantilever type tunnel boring machines, and in particular relates to a vertical support and displacement 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, external auxiliary traction is generally used to overcome the resistance so that the cantilevered roadheader can walk and work normally on large slopes; however, the use of external auxiliary traction increases the process and occupies the roadway space. Summary of the invention

[0003] The invention aims to solve the problem that when a cantilever type roadheader is excavating in a tunnel between 18° and 30°, the walking resistance increases, the roadheader lacks climbing power, and the roadheader has difficulty in walking, thereby affecting the normal use of the roadheader.

[0004] The present invention provides the following technical solution: a vertical support and displacement mechanism, comprising a fixed seat, a traction arm and a vertical support beam; the fixed seat is a carrier of the vertical support and displacement mechanism, and the fixed seat is used to be installed on a tunnel boring machine;

[0005] The traction arm is a telescopic structure. The end of the first arm of the traction arm is hinged to the fixed seat through a cross connector I. The end of the last arm of the traction arm is hinged to the vertical support beam. A swing cylinder is connected between the vertical support beam and the traction arm. A bottom support cylinder assembly is provided at the bottom of the vertical support beam, and a top support cylinder assembly is provided at the top. After the bottom support cylinder assembly and the top support cylinder assembly are extended, the vertical support beam is supported between the top plate and the bottom plate of the tunnel. The traction arm uses the vertical support beam as a fulcrum to apply thrust or pull to the tunnel boring machine through the fixed seat.

[0006] A maneuvering cylinder assembly is connected between the upper and lower sides of the first branch arm of the traction arm and the fixed seat. The maneuvering cylinder assembly is hinged to the fixed seat through a cross connector II and is hinged to the first branch arm of the traction arm through a cross connector III. In the vertical direction, a first angle is formed between the maneuvering cylinder assembly and the first branch arm of the traction arm, and in the horizontal direction, a second angle is formed between the maneuvering cylinder assembly and the first branch arm of the traction arm.

[0007] Furthermore, three groups of ear plates are arranged on the fixed seat, including a main ear plate in the middle and auxiliary ear plates on the upper and lower sides; the main ear plate is hinged to the cross connector I, and the auxiliary ear plates on the upper and lower sides are hinged to the cross connector II; the distance from the hinge holes of the auxiliary ear plates on the upper and lower sides to the fixed seat is smaller than the distance from the hinge holes of the main ear plates to the fixed seat.

[0008] Furthermore, an upper ear plate and a lower ear plate are arranged on the first branch arm of the traction arm, and the upper ear plate and the lower ear plate are respectively hinged to the cross connector III. In the horizontal direction, the upper ear plate and the lower ear plate form a third angle with the maneuvering cylinder assembly.

[0009] Furthermore, the bottom support cylinder assembly includes a bottom support cylinder and a bottom anchor head; the top support cylinder assembly includes a top support cylinder and a top anchor head; the bottom support cylinder is installed at the bottom of the vertical support beam, the top support cylinder is installed at the top of the vertical support beam, and the bottom support cylinder and the top support cylinder are aligned with the vertical support beam; the bottom anchor head is installed at the end of the piston rod of the bottom support cylinder, and the top anchor head is installed at the end of the piston rod of the top support cylinder.

[0010] Furthermore, the traction arm comprises a first section arm and a second section arm, the second section arm is slidably nested in the first section arm, and a traction cylinder is connected between the first section arm and the second section arm.

[0011] A steep slope tunnel boring machine comprises a tunnel boring machine, wherein a set of vertical support and sliding mechanisms are respectively installed on the left and right sides of a body of the tunnel boring machine, a fixing seat of the vertical support and sliding mechanism is fixed to the body of the tunnel boring machine by bolts, and the vertical support and sliding mechanisms on the left and right sides of the body of the tunnel boring machine are symmetrical.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] Through the vertical support and pushing mechanism, the climbing ability of the tunnel boring machine can be greatly improved, and the tunnel boring machine can be driven on a large slope or muddy bottom plate and can cut grooves in harder rocks, thereby solving the problem of tunnel boring machine driving and cutting grooves on large slopes within the slope range of less than 30°.

[0014] A mobilizing cylinder assembly is connected between the upper and lower sides of the first section of the traction arm and the fixed seat. The traction arm swings up and down when the mobilizing cylinder assemblies on the upper and lower sides extend and contract. The traction arm swings laterally when the mobilizing cylinder assemblies on the upper and lower sides extend and contract at the same time, ensuring that the mobilizing cylinder assembly is within the width range of the first section of the arm when the vertical support and sliding mechanism is in the folded state, reducing the lateral size of the vertical support and sliding mechanism, which is beneficial to controlling the width of the fuselage of the large-slope tunnel boring machine and improving the passability of the large-slope tunnel boring machine.

[0015] The top support cylinder assembly and the bottom support cylinder assembly are installed on the upper and lower parts of the vertical support beam respectively. The double cylinder combination design can reduce the size of the cylinder. When the tunnel boring machine is moving on a large slope, the tunnel boring machine will drive the traction arm and the vertical support beam to rotate around the axis of the vertical support beam. The anchor heads of the two components are inserted into the top and bottom plates of the tunnel, which can fix the vertical support beam. Only the traction arm rotates relative to the vertical support beam to reduce damage to the top and bottom plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a front view of the vertical support and sliding mechanism;

[0017] Figure 2 It is a top view of the vertical support and sliding mechanism;

[0018] Figure 3 is a schematic diagram of the first section of the support arm;

[0019] Figure 4 is a schematic diagram of a vertical support beam;

[0020] Figure 5 This is a schematic diagram of the working status of a large-slope tunnel boring machine.

[0021] In the figure: 1-fixed seat; 2-cross connector I; 3-first section of the support arm; 3.1-double ear plate; 3.2-pin hole; 3.3 upper ear plate-3.4-lower ear plate; 4-mobilization cylinder assembly; 5-second section of the support arm; 6-traction cylinder; 7-vertical support beam; 8-swing cylinder; 9-bottom support cylinder assembly; 9.1-bottom support cylinder; 9.2-top anchor head; 10-top support cylinder assembly; 10.1-top support cylinder; 10.2-bottom anchor head; 11-left vertical support sliding mechanism; 12-right vertical support sliding mechanism; 13-tunneling machine; 14-cross connector II; 15-cross connector III. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] like Figure 1 , Figure 2 As shown: a vertical support and displacement mechanism, comprising a fixed seat 1, a traction arm and a vertical support beam 7; the fixed seat 1 is a carrier of the vertical support and displacement mechanism, and the fixed seat 1 is used to be installed on a tunnel boring machine.

[0025] The traction arm is a telescopic structure. The end of the first section of the traction arm is hinged to the fixed seat 1 through a cross connector Ⅰ2, and the end of the last section of the traction arm is hinged to the vertical support beam 7. A swing cylinder 8 is connected between the vertical support beam 7 and the traction arm. A bottom support cylinder assembly 9 is provided at the bottom of the vertical support beam 7, and a top support cylinder assembly 10 is provided at the top. After the bottom support cylinder assembly 9 and the top support cylinder assembly 10 are extended, the vertical support beam 7 is supported between the tunnel roof and the tunnel floor. The traction arm uses the vertical support beam 7 as a fulcrum to apply thrust or tension to the tunnel boring machine through the fixed seat 1.

[0026] A maneuvering cylinder assembly 4 is connected between the upper and lower sides of the first branch arm of the traction arm and the fixed seat 1. The maneuvering cylinder assembly 4 is hinged to the fixed seat 1 through a cross connector Ⅱ14 and to the first branch arm of the traction arm through a cross connector Ⅲ15. In the vertical direction, a first angle a1 is formed between the maneuvering cylinder assembly 4 and the first branch arm of the traction arm, so that the maneuvering cylinder assembly 4 can push the traction arm to swing up and down. In the horizontal direction, a second angle a2 is formed between the maneuvering cylinder assembly 4 and the first branch arm of the traction arm, so that the maneuvering cylinder assembly 4 can push the traction arm to swing laterally.

[0027] Three groups of ear plates are arranged on the fixed seat 1, including a main ear plate in the middle and auxiliary ear plates on the upper and lower sides; the main ear plate is hinged to the cross connector Ⅰ2, and the auxiliary ear plates on the upper and lower sides are hinged to the cross connector Ⅱ14; the distance from the hinge holes of the auxiliary ear plates on the upper and lower sides to the fixed seat 1 is smaller than the distance from the hinge holes of the main ear plates to the fixed seat 1.

[0028] like Figure 2 , Figure 3 As shown: an upper ear plate 3.3 and a lower ear plate 3.4 are arranged on the first arm of the traction arm, and the upper ear plate 3.3 and the lower ear plate 3.4 are respectively hinged to the cross connector III15, and in the horizontal direction, a third angle a3 is formed between the upper ear plate 3.3 and the lower ear plate 3.4 and the maneuvering cylinder assembly 4.

[0029] When the maneuvering oil cylinder assemblies 4 on the upper and lower sides extend and contract, the traction arm swings up and down, and when the maneuvering oil cylinder assemblies 4 on the upper and lower sides extend and contract simultaneously, the traction arm swings laterally.

[0030] like Figure 4 As shown: the bottom support cylinder assembly 9 includes a bottom support cylinder 9.1 and a bottom anchor head 9.2; the top support cylinder assembly 10 includes a top support cylinder 10.1 and a top anchor head 10.2; the bottom support cylinder 9.1 is installed at the bottom of the vertical support beam 7, and the top support cylinder 10.1 is installed at the top of the vertical support beam 7, and the bottom support cylinder 9.1 and the top support cylinder 10.1 are aligned with the vertical support beam 7; the bottom anchor head 9.2 is installed at the end of the piston rod of the bottom support cylinder 9.1, and the top anchor head 10.2 is installed at the end of the piston rod of the top support cylinder 10.1.

[0031] The traction arm comprises a first section arm 3 and a second section arm 5, the second section arm 5 is slidably nested in the first section arm 3, and a traction cylinder 6 is connected between the first section arm 3 and the second section arm 5. The first section arm 3 comprises a box-shaped body, one end of the box-shaped body is provided with a double ear plate 3.1, and the other end is sleeved with the second section arm 5, and a pin hole 3.2 is provided on the box-shaped body near the double ear plate 3.1, and the traction cylinder 6 is connected to the pin hole 3.2.

[0032] Example 2

[0033] like Figure 5As shown: a steep slope tunnel boring machine, including a tunnel boring machine, wherein a set of vertical support and sliding mechanisms of embodiment 1 are respectively installed on the left and right sides of the tunnel boring machine body, and a fixing seat 1 of the vertical support and sliding mechanism is fixed to the tunnel boring machine body by bolts, and the vertical support and sliding mechanisms on the left and right sides of the tunnel boring machine body are symmetrical.

[0034] When the tunnel boring machine has difficulty going uphill, operate the swing cylinder 8 to adjust the vertical support beam 7 to be roughly perpendicular to the top and bottom plates of the tunnel, and fully retract the traction cylinder 6; operate the mobilization cylinder assembly 4 to extend, and push the vertical support beam 7 to swing to the appropriate position; the bottom support cylinder 9.1 of the bottom support cylinder assembly 9 and the top support cylinder 10.1 of the top support cylinder assembly 10 are extended and opened until the two cylinders tightly support the bottom plate and the top plate; the traction cylinder 6 is extended to push the tunnel boring machine forward.

[0035] When it is difficult for the tunnel boring machine to move backward, operate the swing cylinder 8 to adjust the vertical support beam 7 to be roughly perpendicular to the top and bottom plates of the tunnel, and fully extend the traction cylinder 6; operate the mobilization cylinder assembly 4 to extend, and push the vertical support beam 7 to swing to the appropriate position; the bottom support cylinder 9.1 of the bottom support cylinder assembly 9 and the top support cylinder 10.1 of the top support cylinder assembly 10 are extended and opened until the two cylinders tightly support the bottom plate and the top plate; the traction cylinder 6 contracts to pull the tunnel boring machine backward.

[0036] When the vertical support and displacement mechanism is not working, the traction cylinder 6 and the maneuvering cylinder assembly 4 are retracted until the vertical displacement mechanism is close to the body of the tunnel boring machine.

[0037] 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 vertical support and displacement mechanism, characterized in that: It comprises a fixed seat (1), a traction arm and a vertical support beam (7); the fixed seat (1) is a carrier of the vertical support and displacement mechanism, and the fixed seat (1) is used to be installed on a tunnel boring machine; The traction arm is a telescopic structure. The end of the first section of the traction arm is hinged to the fixed seat (1) through a cross connector I (2). The end of the last section of the traction arm is hinged to the vertical support beam (7). A swing cylinder (8) is connected between the vertical support beam (7) and the traction arm. A bottom support cylinder assembly (9) is provided at the bottom of the vertical support beam (7), and a top support cylinder assembly (10) is provided at the top. After the bottom support cylinder assembly (9) and the top support cylinder assembly (10) are extended, the vertical support beam (7) is supported between the tunnel top plate and the tunnel bottom plate. The traction arm applies thrust or pulling force to the tunnel boring machine through the fixed seat (1) with the vertical support beam (7) as a fulcrum. A maneuvering oil cylinder assembly (4) is connected between the upper and lower sides of the first branch arm of the traction arm and the fixed seat (1); the maneuvering oil cylinder assembly (4) is hinged to the fixed seat (1) through a cross connector II (14) and is hinged to the first branch arm of the traction arm through a cross connector III (15); in the vertical direction, a first angle (a1) is formed between the maneuvering oil cylinder assembly (4) and the first branch arm of the traction arm; in the horizontal direction, a second angle (a2) is formed between the maneuvering oil cylinder assembly (4) and the first branch arm of the traction arm.

2. A vertical support and displacement mechanism according to claim 1, characterized in that: The fixing seat (1) is provided with three groups of ear plates, including a main ear plate in the middle and auxiliary ear plates on the upper and lower sides; the main ear plate is hinged to a cross connector I (2), and the auxiliary ear plates on the upper and lower sides are hinged to a cross connector II (14); the distance from the hinge holes of the auxiliary ear plates on the upper and lower sides to the fixing seat (1) is smaller than the distance from the hinge holes of the main ear plates to the fixing seat (1).

3. A vertical support and displacement mechanism according to claim 2, characterized in that: An upper ear plate (3.3) and a lower ear plate (3.4) are provided on the first branch arm of the traction arm. The upper ear plate (3.3) and the lower ear plate (3.4) are respectively hinged to the cross connector III (15). In the horizontal direction, a third angle (a3) ​​is formed between the upper ear plate (3.3) and the lower ear plate (3.4) and the maneuvering cylinder assembly (4).

4. A vertical support and displacement mechanism according to any one of claims 1 to 3, characterized in that: The bottom support cylinder assembly (9) comprises a bottom support cylinder (9.1) and a bottom anchor head (9.2); the top support cylinder assembly (10) comprises a top support cylinder (10.1) and a top anchor head (10.2); the bottom support cylinder (9.1) is installed at the bottom of the vertical support beam (7), the top support cylinder (10.1) is installed at the top of the vertical support beam (7), and the bottom support cylinder (9.1) and the top support cylinder (10.1) are aligned with the vertical support beam (7); the bottom anchor head (9.2) is installed at the end of the piston rod of the bottom support cylinder (9.1), and the top anchor head (10.2) is installed at the end of the piston rod of the top support cylinder (10.1).

5. A vertical support and displacement mechanism according to any one of claims 1 to 3, characterized in that: The traction arm comprises a first section arm (3) and a second section arm (5), the second section arm (5) is slidably nested in the first section arm (3), and a traction cylinder (6) is connected between the first section arm (3) and the second section arm (5).

6. A steep slope tunnel boring machine, characterized in that: The invention comprises a tunnel boring machine, wherein a set of vertical support and displacement mechanisms as claimed in claim 4 are respectively installed on the left and right sides of a body of the tunnel boring machine, a fixing seat (1) of the vertical support and displacement mechanism is fixed to the body of the tunnel boring machine by bolts, and the vertical support and displacement mechanisms on the left and right sides of the body of the tunnel boring machine are symmetrical.

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