Detachable main frame and tunnel boring machine

Abstract

The present invention provides a detachable main frame and a tunnel boring machine. The detachable main frame includes a plurality of detachably connected frames, wherein the plurality of frames include a first frame for mounting a shovel plate, a second frame for mounting a slewing bearing, and a third frame for mounting a slewing oil cylinder, wherein the second frame and the third frame are arranged on the first frame. The present invention realizes convenient assembly and disassembly of the first frame, the second frame, and the third frame, reduces the occupied space, adapts to the size of the cage, and is lowered into the tunnel, thereby facilitating the installation of a high-power tunnel boring machine, improving the tunneling efficiency, and the main frame has high rigidity and strong reliability.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, and in particular to a detachable main frame and a tunneling machine. Background Art

[0002] With the development of the coal mining industry, the hardness of tunnel rocks continues to increase. In order to improve coal mining efficiency, there is a strong demand for high-power tunnel boring machines.

[0003] However, high-power hard rock tunnel boring machines often have large components, and coal mines are restricted by geological conditions, mining technology and financial strength. The cage size is often smaller than the main frame size of the high-power tunnel boring machine, resulting in the inability to lower the high-power tunnel boring machine into the tunnel. In this case, coal mining technicians have to choose a smaller and less powerful tunnel boring machine to adapt to the size of the cage, which seriously restricts the efficiency of tunnel excavation. Summary of the invention

[0004] The present invention provides a detachable main frame and a tunneling machine, which are used to solve the defect in the prior art that the main frame is too large to fit a cage to be lowered into a tunnel, and realize detachable assembly of the main frame, reduce occupied space, and fit the cage size.

[0005] The present invention provides a detachable main frame including a plurality of detachably connected frames, wherein the plurality of frames include a first frame for installing a shovel plate, a second frame for installing a slewing bearing and a third frame for installing a slewing cylinder, wherein the second frame and the third frame are arranged on the first frame.

[0006] According to a detachable main frame provided by the present invention, an earring support is provided on one side of the first frame body close to the second frame body, and a positioning seat arranged along the length direction of the first frame is provided on one side of the second frame body close to the first frame body, and the positioning seat is provided with a positioning hole adapted to the positioning of the earring support and a pin hole adapted to the insertion pin shaft.

[0007] According to a detachable main frame provided by the present invention, the first frame body, the second frame body and the third frame body each include a first side and a second side arranged oppositely;

[0008] The first side of the second frame is located on the same side as the first side of the first frame, and both are used to be installed and adapted with the first end of the first walking part; the first side of the third frame is located on the same side as the first side of the first frame, and both are used to be installed and adapted with the second end of the first walking part;

[0009] The second side of the second frame is located on the same side as the second side of the first frame, and both are used to be installed and adapted with the first end of the second walking part. The second side of the third frame is located on the same side as the second side of the first frame, and both are used to be installed and adapted with the second end of the second walking part.

[0010] According to a detachable main frame provided by the present invention, a side of the second frame body away from the third frame body is the third side of the second frame body, a side of the first frame body and the third side of the second frame body located on the same side is the third side of the first frame body, the third side of the first frame body is provided with a first hanging ear adapted to be installed with a shovel plate, and the third side of the second frame body is provided with a second hanging ear adapted to be installed with a shovel plate cylinder;

[0011] A side of the third frame body close to the second frame body is a third side of the third frame body, a side of the second frame body close to the third frame body is a fourth side of the second frame body, and the third side of the third frame body is butted against the third side of the second frame body;

[0012] The side of the third frame away from the second frame is the fourth side of the third frame, the side of the first frame and the fourth side of the third frame on the same side is the fourth side of the first frame, and the fourth side of the third frame and the fourth side of the first frame are both used for installation and adaptation with the rear support part.

[0013] According to a detachable main frame provided by the present invention, a first connecting plate and a second connecting plate are provided on a first side of the first frame body, a third connecting plate and a fourth connecting plate are provided on a second side of the first frame body, a fifth connecting plate is provided on a first side of the second frame body, the first connecting plate and the fifth connecting plate are used to be installed and adapted with a first end of the first walking portion, a sixth connecting plate is provided on a second side of the second frame body, the sixth connecting plate and the third connecting plate are used to be installed and adapted with a first end of the second walking portion;

[0014] A seventh connecting plate is provided on the first side of the third frame, and the seventh connecting plate and the second connecting plate are used to be connected to the second end of the first walking part. An eighth connecting plate is provided on the second side of the third frame, and the eighth connecting plate and the fourth connecting plate are used to be installed and adapted with the second end of the second walking part.

[0015] According to a detachable main frame provided by the present invention, the first connecting plate is provided with a first long stopper provided in a vertical direction, the fifth connecting plate is provided with a second long stopper provided in a vertical direction, and the first long stopper is butt-jointed with the second long stopper;

[0016] The third connecting plate is provided with a third long stopper provided in the vertical direction, and the sixth connecting plate is provided with a fourth long stopper provided in the vertical direction, and the third long stopper is butt-jointed with the fourth long stopper;

[0017] The second connecting plate is provided with a fifth long stopper provided in the vertical direction, the seventh connecting plate is provided with a sixth long stopper provided in the vertical direction, and the fifth long stopper and the sixth long stopper are butt-fitted;

[0018] The fourth connecting plate is provided with a seventh long stop arranged along the vertical direction, and the eighth connecting plate is provided with an eighth long stop arranged along the vertical direction, and the seventh long stop and the eighth long stop are docked and adapted.

[0019] According to a detachable main frame provided by the present invention, a ninth connecting plate is provided at an end of the first side of the first frame body close to the fourth side thereof, a tenth connecting plate is provided at an end of the first side of the third frame body close to the fourth side thereof, and the ninth connecting plate, the tenth connecting plate, the seventh connecting plate and the second connecting plate are used to be installed and adapted with the second end of the first walking portion;

[0020] An eleventh connecting plate is provided at the end of the second side of the first frame body near the fourth side thereof, and a twenty-second connecting plate is provided at the end of the second side of the third frame body near the fourth side thereof, and the eleventh connecting plate, the twenty-second connecting plate, the fourth connecting plate and the eighth connecting plate are used for installation and adaptation with the second end of the second walking portion.

[0021] According to a detachable main frame provided by the present invention, the first frame body, the second frame body and the third frame body enclose a structural cavity for passing a first transporter.

[0022] According to a detachable main frame provided by the present invention, a first fixing plate and a second fixing plate are provided on a side of the first frame body close to the second frame body, a third fixing plate fixedly connected and adapted to the first fixing plate is provided on the first side of the second frame body, and a fourth fixing plate fixedly connected and adapted to the second fixing plate is provided on the second side of the second frame body;

[0023] A fifth fixing plate fixedly connected and adapted to the first fixing plate is disposed on the first side of the third frame, and a sixth fixing plate fixedly connected and adapted to the second fixing plate is disposed on the second side of the third frame;

[0024] A seventh fixing plate is disposed on the third side of the second frame, and an eighth fixing plate fixedly connected and adapted to the seventh fixing plate is disposed on the third side of the third frame.

[0025] The present invention also provides a roadheader, comprising the detachable main frame as described above.

[0026] The detachable main frame and tunnel boring machine provided by the present invention are provided with multiple detachably connected frames, wherein the multiple frames include a first frame for installing a shovel plate, a second frame for installing a slewing bearing and a third frame for installing a slewing cylinder. The second frame and the third frame are arranged on the first frame, so that the first frame, the second frame and the third frame can be easily disassembled and assembled, the occupied space can be reduced, the size of the cage can be adapted, and it can be lowered into the tunnel, thereby facilitating the installation of a high-power tunnel boring machine and improving the tunneling efficiency. The main frame has high rigidity and strong reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or 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 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.

[0028] Figure 1 It is a structural schematic diagram of a detachable main frame provided by the present invention;

[0029] Figure 2 It is a schematic diagram of the exploded assembly of the detachable main frame provided by the present invention;

[0030] Reference numerals:

[0031] 100: first frame; 110: first long stop; 120: first reinforcement plate;

[0032] 130: first hanging ear; 140: fifth long stop; 150: earring support;

[0033] 160: first connecting plate; 170: second connecting plate; 180: ninth connecting plate;

[0034] 190: first fixing plate; 200: second frame; 210: second long stop;

[0035] 220: positioning seat; 230: second hanging ear; 240: fifth connecting plate;

[0036] 250: seventh fixing plate; 260: third fixing plate; 300: third frame;

[0037] 310: the sixth long stop; 320: the second reinforcing plate; 330: the seventh connecting plate;

[0038] 340: tenth connecting plate; 350: eighth fixing plate; 360: fifth fixing plate;

[0039] 400: pin; 500: bolt. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Combine the following Figure 1 and Figure 2 A detachable main frame of the present invention is described, comprising a plurality of detachably connected frames, wherein the plurality of frames include a first frame 100 for mounting a shovel plate, a second frame 200 for mounting a slewing bearing, and a third frame 300 for mounting a slewing cylinder, wherein the second frame 200 and the third frame 300 are arranged on the first frame 100. It can be understood that the first frame 100 and the second frame 200 are included, wherein the second frame 200 is arranged on the top side of the first frame 100, and the top side of the second frame 200 is used to mount a slewing bearing. The first frame 100, the second frame 200, and the third frame 300 all include a first side and a second side arranged opposite to each other. The first side of the second frame 200 is located on the same side as the first side of the first frame 100, and both are used to be installed and adapted with the first end of the first walking part. The second side of the second frame 200 is located on the same side as the second side of the first frame 100, and both are used to be installed and adapted with the first end of the second walking part. The third side of the second frame 200 is used to be installed and adapted with the shovel plate cylinder, and the third side of the first frame 100 is used to be installed and adapted with the shovel plate.

[0042] The third frame 300 is arranged on the top side of the first frame 100, and the top side of the third frame 300 is used to install the rotary cylinder. The first side of the third frame 300 is located on the same side as the first side of the first frame 100, and both are used to be installed and adapted with the second end of the first walking part. The second side of the third frame 300 is located on the same side as the second side of the first frame 100, and both are used to be installed and adapted with the second end of the second walking part, wherein the third side of the third frame 300 is connected to the fourth side of the second frame 200, and the fourth side of the third frame 300 and the fourth side of the first frame 100 are both used to be installed and adapted with the rear support part.

[0043] Specifically, the first frame 100, the second frame 200 and the third frame 300 are assembled into a main frame, wherein the second frame 200 and the third frame 300 are mounted on the top side of the first frame 100 after being docked.

[0044] Furthermore, combined with Figure 1 and Figure 2The horizontal circumferential sides of the second frame 200 are respectively provided with a first side (front side), a second side (rear side), a third side (left side) and a fourth side (right side). The top side of the second frame 200 is used to install the slewing bearing, and the bottom side is used to be installed on the top side of the first frame 100. The first side of the second frame 200 is located on the same side as the first side of the first frame 100, and is used to install the first end of the first walking part. The second side of the second frame 200 is located on the same side as the second side of the first frame 100, and is used to install the first end of the second walking part. The installation of the first walking part and the second walking part can effectively improve the rigidity of the installation positions of the first frame 100 and the second frame 200, thereby improving the overall reliability.

[0045] According to a detachable main frame provided by the present invention, a side of the second frame 200 away from the third frame 300 is the third side of the second frame 200, and a side of the first frame 100 and the third side of the second frame 200 located on the same side is the third side of the first frame 100, and the third side of the first frame 100 is provided with a first hanging ear 130 adapted to be installed with a shovel plate, and the third side of the second frame 200 is provided with a second hanging ear 230 adapted to be installed with a shovel plate cylinder;

[0046] A side of the third frame 300 close to the second frame 200 is a third side of the third frame 300, a side of the second frame 200 close to the third frame 300 is a fourth side of the second frame 200, and the third side of the third frame 300 is butted against the third side of the second frame 200;

[0047] The side of the third frame 300 away from the second frame 200 is the fourth side of the third frame 300, and the side of the first frame 100 and the fourth side of the third frame 300 on the same side is the fourth side of the first frame 100. The fourth side of the third frame 300 and the fourth side of the first frame 100 are both used to be installed and adapted with the rear support. It can be understood that the third side of the second frame 200 is provided with a second hanging ear 230, which is installed and adapted with the shovel plate cylinder through a second bayonet. The third side of the first frame 100 is provided with a first hanging ear 130, which is installed and adapted with the shovel plate through a first bayonet.

[0048] Furthermore, combined with Figure 1 and Figure 2The horizontal circumferential sides of the third frame 300 are respectively provided with a first side (front side), a second side (rear side), a third side (left side) and a fourth side (right side). The top side of the third frame 300 is used to install a rotary cylinder. The first side of the third frame 300 is located on the same side as the first side of the first frame 100, and both are used to be installed and adapted with the second end of the first walking part. The second side of the third frame 300 is located on the same side as the second side of the first frame 100, and both are used to be installed and adapted with the second end of the second walking part. The installation of the second end of the first walking part and the second end of the second walking part can effectively improve the rigidity of the installation position of the third frame 300 and the first frame 100, thereby improving the overall reliability.

[0049] The third side of the third frame 300 is butted against the fourth side of the second frame 200 to ensure the connection strength between the third frame 300 and the second frame 200. The fourth side of the third frame 300 and the fourth side of the first frame 100 are used to install the rear support part to further enhance the connection strength between the third frame 300 and the first frame 100.

[0050] According to a detachable main frame provided by the present invention, an earring support 150 is provided on the top mounting surface of the first frame body 100, and a pin hole adapted to the insertion pin shaft 400 of the earring support 150 is provided on the bottom side of the second frame body 200. It can be understood that the top side of the first frame body 100 is provided with a mounting surface for mounting the second frame body 200 and the third frame body 300. The earring support 150 is provided at a position corresponding to the mounting surface of the second frame body 200, and a pin hole is provided on the bottom side of the second frame body 200. The pin shaft 400 passes through the pin hole and the earring support 150 to realize the pin connection between the second frame body 200 and the first frame body 100. The pin shaft 400 is used to bear the longitudinal and front-to-back direction loads, which can greatly improve the overall reliability.

[0051] According to a detachable main frame provided by the present invention, the second frame body 200 is provided with a positioning seat 220 arranged along the length direction of the first frame body 100, and the bottom side of the positioning seat 220 is provided with a positioning hole that is positioned and matched with the earring support 150. It can be understood that the bottom side of the second frame body 200 is provided with a positioning seat 220, and the positioning seat 220 is arranged along the length direction of the first frame body 100, that is, the left and right direction, and the positioning seat 220 is positioned and matched with the earring support 150. The front and rear sides of the positioning seat 220 are provided with a through pin hole, and the bottom side of the positioning seat 220 is provided with a positioning hole for installing the earring support 150, that is, the earring support 150 is penetrated in the positioning seat 220 through the positioning hole, and is aligned and matched with the pin hole, so as to realize the through pin connection of the pin shaft 400 and ensure the connection strength. It is worth noting that two earring supports 150 are provided, which are respectively located on the mounting surface and close to the first side and the second side of the first frame 100, and two positioning seats 220 are also provided, which are respectively located on the bottom side of the second frame 200 and close to the first side and the second side of the second frame 200.

[0052] According to a detachable main frame provided by the present invention, a first connecting plate 160 and a second connecting plate 170 are provided on a first side of a first frame body 100, a third connecting plate and a fourth connecting plate are provided on a second side of the first frame body 100, a fifth connecting plate 240 is provided on a first side of a second frame body 200, the first connecting plate 160 and the fifth connecting plate 240 are used to install a first end of a first walking portion, a sixth connecting plate is provided on a second side of the second frame body 200, the sixth connecting plate and the third connecting plate are used to install a first end of a second walking portion;

[0053] A seventh connecting plate 330 is provided on the first side of the third frame 300, and the seventh connecting plate 330 and the second connecting plate 170 are used to install the second end of the first walking part. An eighth connecting plate is provided on the second side of the third frame 300, and the eighth connecting plate and the fourth connecting plate are used to install the second end of the second walking part. It can be understood that the first end of the first walking part is fixedly mounted with the first connecting plate 160 and the fifth connecting plate 240 by bolts 500. The first end of the second walking part is fixedly mounted with the third connecting plate and the sixth connecting plate by bolts 500. The second end of the first walking part is fixedly mounted with the second connecting plate 170 and the seventh connecting plate 330 by bolts 500. The second end of the second walking part is fixedly mounted with the fourth connecting plate and the eighth connecting plate by bolts 500.

[0054] According to a detachable main frame provided by the present invention, the first connecting plate 160 is provided with a first long stop 110 arranged in the vertical direction, and the fifth connecting plate 240 is provided with a second long stop 210 arranged in the vertical direction, and the first long stop 110 is butt-matched with the second long stop 210;

[0055] The third connecting plate is provided with a third long stopper provided in the vertical direction, and the sixth connecting plate is provided with a fourth long stopper provided in the vertical direction, and the third long stopper is butt-jointed with the fourth long stopper;

[0056] The second connecting plate 170 is provided with a fifth long stop 140 arranged in the vertical direction, and the seventh connecting plate 330 is provided with a sixth long stop 310 arranged in the vertical direction, and the fifth long stop 140 and the sixth long stop 310 are butt-fitted;

[0057] The fourth connecting plate is provided with a seventh long stopper provided in the vertical direction, and the eighth connecting plate is provided with an eighth long stopper provided in the vertical direction, and the seventh long stopper and the eighth long stopper are docked and adapted. It can be understood that after the second frame 200 is installed on the first frame 100, the first long stopper 110 and the second long stopper 210 are docked, and the third long stopper and the fourth long stopper are docked, effectively bearing the lateral load between the second frame 200 and the first frame 100. After the third frame 300 is installed on the first frame 100, the fifth long stopper 140 and the sixth long stopper 310 are docked, and the seventh long stopper and the eighth long stopper are docked, effectively bearing the lateral load between the third frame 300 and the first frame 100.

[0058] According to a detachable main frame provided by the present invention, a ninth connecting plate 180 is provided at an end of the first side of the first frame body 100 close to the fourth side thereof, a tenth connecting plate 340 is provided at an end of the first side of the third frame body 300 close to the fourth side thereof, and the ninth connecting plate 180, the tenth connecting plate 340, the seventh connecting plate 330 and the second connecting plate 170 are used to mount the second end of the first walking portion;

[0059] An eleventh connecting plate is provided at the end of the second side of the first frame 100 near its fourth side, and a twenty-second connecting plate is provided at the end of the second side of the third frame 300 near its fourth side. The eleventh connecting plate, the twenty-second connecting plate, the fourth connecting plate and the eighth connecting plate are used to install the second end of the second walking part. It can be understood that in order to increase the connection strength between the second end of the first walking part and the third frame 300 and the first frame 100, the ninth connecting plate 180 and the tenth connecting plate 340 are provided. In order to increase the connection strength between the second end of the second walking part and the third frame 300 and the first frame 100, the eleventh connecting plate and the twelfth connecting plate are provided. At the same time, the connection stiffness of the third connecting part and the first connecting part can be reversely increased to improve stability.

[0060] According to a detachable main frame provided by the present invention, a first reinforcing plate 120 is provided in the first frame 100, and a second reinforcing plate 320 is provided in the third frame 300. It can be understood that the first reinforcing plate 120 arranged in a water-inclined manner is provided in the first frame 100, which can effectively improve the overall structural strength of the first frame 100. The second reinforcing plate 320 arranged in a water-inclined manner is provided in the third frame 300, which can effectively improve the overall structural strength of the third frame 300, thereby ensuring the overall stability.

[0061] According to a detachable main frame provided by the present invention, a structural cavity is enclosed by a first frame body 100 and a second frame body 200. It can be understood that the top side of the first frame body 100 and the first side of the second frame body 200, the second side of the second frame body 200 and the top side of the second frame body 200 enclose a structural cavity for correspondingly assembling components of the tunnel boring machine.

[0062] According to a detachable main frame provided by the present invention, a first fixing plate 190 and a second fixing plate are provided on the top side of a first frame body 100, a third fixing plate 260 fixedly connected and adapted to the first fixing plate 190 is provided on the first side of a second frame body 200, and a fourth fixing plate fixedly connected and adapted to the second fixing plate is provided on the second side of the second frame body 200;

[0063] A fifth fixing plate 360 ​​fixedly connected and adapted to the first fixing plate 190 is disposed on the first side of the third frame 300, and a sixth fixing plate fixedly connected and adapted to the second fixing plate is disposed on the second side of the third frame 300;

[0064] The third side of the second frame 200 is provided with a seventh fixing plate 250, and the third side of the third frame 300 is provided with an eighth fixing plate 350 fixedly connected and adapted to the seventh fixing plate 250. It can be understood that the top side of the first frame 100 and the bottom side of the second frame 200 are fixedly connected by bolts 500 passing through the first fixing plate 190 and the third fixing plate 260, and by bolts 500 passing through the second fixing plate and the fourth fixing plate. The fourth side of the second frame 200 and the third side of the third frame 300 are fixedly connected by bolts 500 passing through the seventh fixing plate 250 and the eighth fixing plate 350. The bottom side of the third frame 300 and the top side of the first frame 100 are fixedly connected by bolts 500 passing through the fifth fixing plate 360 ​​and the first fixing plate 190, and by bolts 500 passing through the sixth fixing plate and the second fixing plate, thereby being assembled into a reliable main frame as a whole.

[0065] The present invention also provides a tunnel boring machine, including the detachable main frame as described above. Specifically, the tunnel boring machine also includes a shovel plate part, a cutting part, a first walking part and a second walking part, the shovel plate part is respectively assembled and connected with the first frame 100 and the second frame 200, the cutting part is respectively assembled and connected with the second frame 200, the first walking part is respectively assembled and connected with the same side of the first frame 100, the second frame 200 and the third frame 300, the second walking part is respectively assembled and connected with the same side of the first frame 100, the second frame 200 and the third frame 300, and the first walking part and the second walking part are arranged opposite to each other. After the split tunnel boring machine and the detachable main frame are disassembled respectively, they are transported to the tunnel through the cage, and the split main frame is respectively assembled and connected with the first frame 100, the second frame 200 and the third frame 300 in the tunnel, so as to realize the assembly of the high-power tunnel boring machine and ensure the tunneling efficiency.

[0066] The detachable main frame and tunnel boring machine provided by the present invention are provided with multiple detachably connected frames, wherein the multiple frames include a first frame for installing a shovel plate, a second frame for installing a slewing bearing and a third frame for installing a slewing cylinder. The second frame and the third frame are arranged on the first frame, so that the first frame, the second frame and the third frame can be easily disassembled and assembled, the occupied space can be reduced, the size of the cage can be adapted, and it can be lowered into the tunnel, thereby facilitating the installation of a high-power tunnel boring machine and improving the tunneling efficiency. The main frame has high rigidity and strong reliability.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable main frame, characterized in that: It comprises a plurality of detachably connected frames, wherein the plurality of frames comprise a first frame for mounting a shovel plate, a second frame for mounting a slewing bearing, and a third frame for mounting a slewing oil cylinder, wherein the second frame and the third frame are arranged on the first frame; A first connecting plate and a second connecting plate are provided on the first side of the first frame body, a third connecting plate and a fourth connecting plate are provided on the second side of the first frame body, a fifth connecting plate is provided on the first side of the second frame body, the first connecting plate and the fifth connecting plate are used to be installed and adapted with the first end of the first walking portion, a sixth connecting plate is provided on the second side of the second frame body, the sixth connecting plate and the third connecting plate are used to be installed and adapted with the first end of the second walking portion; a seventh connecting plate is provided on the first side of the third frame body, the seventh connecting plate and the second connecting plate are used to be installed and adapted with the second end of the first walking portion, an eighth connecting plate is provided on the second side of the third frame body, the eighth connecting plate and the fourth connecting plate are used to be installed and adapted with the second end of the second walking portion; The first connecting plate is provided with a first long stop set along the vertical direction, the fifth connecting plate is provided with a second long stop set along the vertical direction, and the first long stop is docked and adapted with the second long stop; the third connecting plate is provided with a third long stop set along the vertical direction, the sixth connecting plate is provided with a fourth long stop set along the vertical direction, and the third long stop is docked and adapted with the fourth long stop; the second connecting plate is provided with a fifth long stop set along the vertical direction, the seventh connecting plate is provided with a sixth long stop set along the vertical direction, and the fifth long stop is docked and adapted with the sixth long stop; the fourth connecting plate is provided with a seventh long stop set along the vertical direction, the eighth connecting plate is provided with an eighth long stop set along the vertical direction, and the seventh long stop is docked and adapted with the eighth long stop; The first frame, the second frame and the third frame each include a first side and a second side that are arranged opposite to each other; the first side of the second frame is located on the same side as the first side of the first frame, and both are used to be installed and adapted with the first end of the first walking part, the first side of the third frame is located on the same side as the first side of the first frame, and both are used to be installed and adapted with the second end of the first walking part; the second side of the second frame is located on the same side as the second side of the first frame, and both are used to be installed and adapted with the first end of the second walking part, the second side of the third frame is located on the same side as the second side of the first frame, and both are used to be installed and adapted with the second end of the second walking part; the second frame and the third frame are installed on the top side of the first frame after docking.

2. The detachable main frame according to claim 1, characterized in that: An earring support is provided on one side of the first frame body close to the second frame body, and a positioning seat is provided on one side of the second frame body close to the first frame body along the length direction of the first frame. The positioning seat is provided with a positioning hole adapted to the positioning of the earring support and a pin hole adapted to the insertion pin shaft.

3. The detachable main frame according to claim 1, characterized in that: The side of the second frame away from the third frame is the third side of the second frame, the side of the first frame and the third side of the second frame on the same side is the third side of the first frame, the third side of the first frame is provided with a first hanging ear adapted to be installed with a shovel plate, and the third side of the second frame is provided with a second hanging ear adapted to be installed with a shovel plate cylinder; A side of the third frame body close to the second frame body is a third side of the third frame body, a side of the second frame body close to the third frame body is a fourth side of the second frame body, and the third side of the third frame body is butted against the third side of the second frame body; The side of the third frame away from the second frame is the fourth side of the third frame, the side of the first frame and the fourth side of the third frame on the same side is the fourth side of the first frame, and the fourth side of the third frame and the fourth side of the first frame are both used for installation and adaptation with the rear support part.

4. The detachable main frame according to claim 3, characterized in that: A ninth connecting plate is provided at an end of the first side of the first frame body close to the fourth side thereof, a tenth connecting plate is provided at an end of the first side of the third frame body close to the fourth side thereof, and the ninth connecting plate, the tenth connecting plate, the seventh connecting plate and the second connecting plate are used to be installed and adapted with the second end of the first walking portion; An eleventh connecting plate is provided at the end of the second side of the first frame body near the fourth side thereof, and a twenty-second connecting plate is provided at the end of the second side of the third frame body near the fourth side thereof, and the eleventh connecting plate, the twenty-second connecting plate, the fourth connecting plate and the eighth connecting plate are used for installation and adaptation with the second end of the second walking portion.

5. The detachable main frame according to claim 1, characterized in that: The first frame, the second frame and the third frame enclose a structural cavity for passing the first conveyor.

6. The detachable main frame according to claim 1, characterized in that: A first fixing plate and a second fixing plate are provided on one side of the first frame body close to the second frame body, a third fixing plate fixedly connected and adapted to the first fixing plate is provided on the first side of the second frame body, and a fourth fixing plate fixedly connected and adapted to the second fixing plate is provided on the second side of the second frame body; A fifth fixing plate fixedly connected and adapted to the first fixing plate is disposed on the first side of the third frame, and a sixth fixing plate fixedly connected and adapted to the second fixing plate is disposed on the second side of the third frame; A seventh fixing plate is disposed on the third side of the second frame, and an eighth fixing plate fixedly connected and adapted to the seventh fixing plate is disposed on the third side of the third frame.

7. A tunnel boring machine, characterized in that: It comprises a detachable main frame as claimed in any one of claims 1 to 6.

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