Roadway heading machine

Abstract

The invention relates to a roadway heading machine which comprises a main machine, a first trailer, a second trailer and a pressing wheel, the first trailer comprises a first frame, walking frames arranged on the two opposite sides of the first frame respectively and arranged in the length direction of the first frame in a sliding mode, and milling and digging devices arranged on the walking frames on the two sides respectively; the milling and excavating device is used for carrying out planarization cutting on two opposite cambered surface side walls of the circular roadway; the second trailer comprises a second frame and collecting devices arranged on the two opposite sides of the second frame correspondingly. According to the roadway heading machine, firstly, the main machine is adopted to excavate the circular roadway, then the milling and excavating device is used for carrying out planar cutting on the cambered surface side walls of the two sides of the circular roadway, the cut materials are collected through the collecting device and conveyed to the bottom of the roadway, the cut materials and part of the materials cut by the main machine are laid to the bottom of the roadway together, and then the materials are compacted through the pressing wheels; the semi-circular arched roadway is formed at a time, secondary forming construction is avoided, the process is simple, and cost is low.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heading machine, and particularly relates to a roadway heading machine. BACKGROUND

[0002] In the process of coal mining, the heading technology of roadway is directly related to the efficiency and quality of coal mining. The heading machine is a commonly used construction equipment for the heading work of coal mine roadway.

[0003] The open TBM (full-face hard rock tunnel boring machine) can perform parallel and continuous operation on construction processes such as heading, supporting and slagging, and has significant advantages for coal mine roadway, especially long distance rock roadway and geological section. However, the roadway in the coal mine field has certain requirements for the shape of the cross section, and the existing open TBM excavated roadway is usually a circular roadway. Although the structure is reasonable and the construction process is relatively simple, the utilization rate of the roadway cross section is poor, and the roadway needs to be backfilled twice after construction, which is complex and high in cost. SUMMARY

[0004] Therefore, the application provides a roadway heading machine capable of excavating a semicircular arched roadway at one time.

[0005] To achieve the above purpose, the technical scheme adopted by the application is as follows: A roadway heading machine comprises: a main machine for excavating a circular roadway; a first trailer comprising a first trailer frame connected with the main machine, a first wheel assembly arranged at the bottom of the first trailer frame, walking frames arranged at opposite sides of the first trailer frame and sliding along the length direction of the first trailer frame, a first driving mechanism for driving the walking frames to move, and milling and digging devices arranged on the walking frames at the two sides, the milling and digging devices being used for planarizing and cutting the opposite arc side walls of the circular roadway; a second trailer comprising a second trailer frame connected with the first trailer frame, a second wheel assembly arranged at the bottom of the second trailer frame, and collecting devices arranged at opposite sides of the second trailer frame, the collecting devices being used for collecting and conveying the roadway side wall materials cut by the milling and digging devices to the bottom of the roadway; a press wheel connected with the second trailer frame through a connecting frame.

[0006] By adopting the above technical scheme, the roadway heading machine can realize one-time forming of the semicircular arched roadway, has good forming effect, avoids secondary forming construction of the roadway, has simple process and low cost.

[0007] The roadheader as claimed in any one of the preceding claims, optionally, the milling device comprises first milling mechanisms respectively arranged on the two sides of the walking frame and rotating around first axis lines, a second driving mechanism for driving the first milling mechanisms to rotate, second milling mechanisms respectively arranged on the two sides of the walking frame and rotating around second axis lines, and a third driving mechanism for driving the second milling mechanisms to rotate. The first axis lines and the second axis lines respectively extend along the width direction of the first frame, and the first axis lines are located in front of and above the second axis lines. When the first trailer is advancing, the first milling mechanisms and the second milling mechanisms on the two sides rotate respectively to cut the arc side walls on the opposite sides of the circular roadway respectively.

[0008] By adopting the above technical solution, the first milling mechanisms and the second milling mechanisms can not only realize the planarization of the side walls of the roadway, but also have good planarization forming effect, and can avoid the secondary forming of the side walls of the roadway. If one milling mechanism is used to cut the side walls of the roadway, more power needs to be provided for the milling mechanism, the side area of the milling mechanism is limited, the milling area is difficult to adjust and control, and the forming effect is not good.

[0009] The roadheader as claimed in any one of the preceding claims, optionally, the outer diameter of the first milling mechanism is smaller than the outer diameter of the second milling mechanism.

[0010] Optionally, the height position of the upper edge of each side of the second milling mechanism is located between the upper edge and the lower edge of the corresponding side of the first milling mechanism.

[0011] The roadheader as claimed in any one of the preceding claims, optionally, the first milling mechanism adopts a milling head or a rolling cutter, and the second milling mechanism adopts a milling head or a rolling cutter.

[0012] The roadheader as claimed in any one of the preceding claims, optionally, the second driving mechanism is a hydraulic motor, an electric motor or a pneumatic motor, and the third driving mechanism is a hydraulic motor, an electric motor or a pneumatic motor.

[0013] The roadheader as claimed in any one of the preceding claims, optionally, the collecting device comprises a feeding plate arranged on the side of the second frame, a collecting plate having one end rotatably connected to the feeding plate around a third axis line, and a fifth driving mechanism connected between the feeding plate and the collecting plate, the feeding plate extends from front to back and from outside to inside along the length direction of the second frame, the rear end of the collecting plate is rotatably connected to the front end of the feeding plate, the third axis line extends along the up-down direction of the second frame, the collecting plate is used for collecting the side wall materials cut down, and the collecting plate is also used for repairing the side walls of the roadway after being cut by the milling device.

[0014] Further optionally, the material collecting plate comprises a connecting portion rotationally connected to the feeding plate, and a material collecting portion formed by bending the front end portion of the connecting portion forward, and a plurality of spades are arranged along the length direction of the front end portion of the material collecting portion.

[0015] The roadheader as claimed in any one of the preceding claims, wherein the pressing wheel is rotationally arranged on the connecting frame via a pressing wheel rotating shaft, and the pressing wheel rotating shaft extends along the width direction of the second frame.

[0016] The roadheader as claimed in any one of the preceding claims, wherein the first trailer further comprises a support shoe mechanism arranged on each side of the first frame, and each side of the support shoe mechanism comprises a support shoe movably arranged on the first frame along the width direction of the first frame, and a fourth driving mechanism for driving the support shoe to move.

[0017] The roadheader as claimed in any one of the preceding claims, wherein the second trailer further comprises an anchor rod support device arranged on each side of the second frame. Each side of the anchor rod support device comprises an anchor rod support arranged on the side of the second frame, and an anchor rod machine arranged on the anchor rod support, and the height of the anchor rod machine on the anchor rod support is adjustable, and the anchor rod machine is a multi-degree-of-freedom anchor rod machine.

[0018] The roadheader as claimed in any one of the preceding claims, wherein the second trailer further comprises a first anchor rod support device arranged on each side of the second frame, and a second anchor rod support device arranged on each side of the second frame, each side of the first anchor rod support device and the second anchor rod support device are arranged in a spaced manner, and the first anchor rod support device is arranged below the second anchor rod support device. Each side of the first anchor rod support device comprises a first anchor rod support arranged on the second frame, and a first anchor rod machine arranged on the first anchor rod support, and the height of the first anchor rod machine on the first anchor rod support is adjustable. Each side of the second anchor rod support device comprises a second anchor rod support arranged on the second frame, and a second anchor rod machine arranged on the second anchor rod support, and the height of the second anchor rod machine on the second anchor rod support is adjustable, and the second anchor rod machine is a multi-degree-of-freedom anchor rod machine.

[0019] The "multi-degree-of-freedom" means that the anchor rod machine has multiple working directions to drive anchor rods into multiple directions of the roadway to reinforce and support the roadway with anchor rods.

[0020] The roadheader as claimed in any one of the preceding claims, wherein the middle portion of the connecting frame is hollow.

[0021] The roadheader as claimed in any one of the preceding claims, wherein the first driving mechanism is a hydraulic cylinder or a pneumatic cylinder.

[0022] The roadway tunneling machine as described above, optionally, the first frame and the second frame are rotatably connected through a pin shaft, and the pin shaft is arranged in an up-down direction.

[0023] The roadway tunneling machine as described above, optionally, the main machine is an open hard rock tunneling machine main machine, a single-shield hard rock tunneling machine main machine or a double-shield hard rock tunneling machine main machine.

[0024] By means of the above technical scheme, the present application has the following advantages compared with the prior art: The roadway tunneling machine first excavates a circular roadway by using the main machine, then performs planarization cutting on the two side arc walls of the circular roadway by using the milling and excavating device, collects and conveys the cut material to the bottom of the roadway through the collecting device, lays the cut material and the part of the material cut by the main machine on the bottom of the roadway, and then realizes one-time forming of a semi-circular arched roadway by compaction of the pressure wheel, thereby avoiding secondary forming construction, simplifying the process and reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0026] Figure 1 A cross-sectional view of a roadway constructed by the roadway tunneling machine of an embodiment of the present application; Figure 2 A structural schematic view of the roadway tunneling machine of an embodiment of the present application from one perspective (the main machine is not shown in the figure); Figure 3 A structural schematic view of the roadway tunneling machine of an embodiment of the present application from another perspective (the main machine is not shown in the figure); Figure 2 A side structural schematic view of the roadway tunneling machine of an embodiment of the present application (the main machine is not shown in the figure); Figure 4 Figure 1 A side structural schematic view of the roadway tunneling machine of an embodiment of the present application (the main machine is not shown in the figure); Figure 5 A sectional view of the roadway tunneling machine of an embodiment of the present application in the direction of A-A; Figure 4 A sectional view of the roadway tunneling machine of an embodiment of the present application in the direction of B-B; Figure 6 Figure 4 A structural schematic view of the collecting device of the roadway tunneling machine of an embodiment of the present application; Reference signs: Figure 7 Figure 1 A structural schematic view of the collecting device of the roadway tunneling machine of an embodiment of the present application; Reference signs: ​​1, first frame; 2, first wheel; 3, walking frame; 4, first milling mechanism; 5, second milling mechanism; 6, first driving mechanism; 7, first baffle; 8, second baffle; 9, second frame; 10, second wheel; 11, first anchor rod support; 12, first anchor rod machine; 13, second anchor rod support; 14, second anchor rod machine; 15, feeding plate; 16, collecting plate; 17, spade; 18, compression wheel; 19, connecting frame; 20, trailer oil cylinder; 21, fifth driving mechanism; 22, supporting shoe; 23, semicircular arched roadway. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in the embodiments of the present application shall belong to the scope of protection of the embodiments of the present application.

[0028] The roadway tunneling machine disclosed by the present application utilizes the main machine to excavate a circular roadway, and then utilizes the milling device of the first trailer to planarize the side wall of the circular roadway. The material cut off is collected by the collecting device and transported to the bottom of the roadway for filling. During the transportation process of the material cut off by the main machine through the conveying system, part of the material falls to the bottom of the roadway together with the material of the side wall and is laid on the bottom of the roadway. Then, the compression wheel is used for compaction, so that the bottom of the roadway is planarized. A semicircular arched roadway 23 is obtained by one-time construction. See Figure 1 The cross-sectional view of the semicircular arched roadway is shown.

[0029] The present application will be further described below in conjunction with the drawings. See Figures 2 to 7 The roadway tunneling machine provided by an embodiment of the present application is shown. The main machine is connected to the front end of the first trailer and is not shown in the figure.

[0030] See Figure 2 and Figure 3 The roadway tunneling machine includes a main machine, a first trailer, a second trailer, a conveying system (the conveying system is also not shown in the figure) and a compression wheel 18. The main machine is used for excavating a circular roadway.

[0031] The first trailer comprises a first frame 1 connected with the rear part of the host vehicle through a trailer oil cylinder 20, a first wheel assembly arranged at the bottom of the first frame 1, a walking frame 3 arranged at each side of the first frame 1 and sliding along the length direction of the first frame 1, a first driving mechanism 6 for driving the walking frame 3 to move, and a milling and digging device. In some embodiments, the first frame 1 is provided with a sliding rail extending along the length direction of the first frame 1 at each side, the walking frame 3 at each side is slidingly installed on the sliding rail at the corresponding side, and the first driving mechanism 6 can be a hydraulic cylinder installed at the rear end of the first frame 1, the piston rod of the hydraulic cylinder is connected with the walking frame 3, the walking frame 3 is pushed to slide in the front-rear direction on the first frame 1, and the milling and digging device is driven to slide in the front-rear direction on the first frame 1, so as to perform planar cutting on the sidewall of the circular tunnel.

[0032] In some embodiments, the milling and digging device comprises a first milling and digging mechanism 4 arranged on each walking frame 3 and rotating around a first axis, a second driving mechanism for driving the first milling and digging mechanism 4 to rotate, a second milling and digging mechanism 5 arranged on each walking frame 3 and rotating around a second axis, and a third driving mechanism for driving the second milling and digging mechanism 5 to rotate, the first axis and the second axis extend along the width direction of the first frame 1 respectively, and the first axis is located in front of and above the second axis, so that the first milling and digging mechanism 4 is located in front of and above the second milling and digging mechanism 5.

[0033] As can be seen from Figure 2 and Figure 3 , each side of the first frame 1 is provided with one first milling and digging mechanism 4 and one second milling and digging mechanism 5, the first milling and digging mechanism 4 and the second milling and digging mechanism 5 are respectively arranged on the corresponding walking frame 3 and rotate, the walking frame 3 slides in the front-rear direction on the first frame 1 to drive the first milling and digging mechanism 4 and the second milling and digging mechanism 5 to slide in the front-rear direction on the first frame 1, so as to perform planar cutting on the sidewall of the circular tunnel.

[0034] In some embodiments, the second driving mechanism adopts a hydraulic motor arranged on the first frame 1, the third driving mechanism also adopts a hydraulic motor arranged on the first frame 1, the first milling and digging mechanism 4 on each side can be driven to rotate by the same second driving mechanism, and the second milling and digging mechanism 5 on each side can also be driven to rotate by the same third driving mechanism. In other embodiments, the first milling and digging mechanism 4 on each side can also be driven to rotate synchronously by two second driving mechanisms respectively, and the second milling and digging mechanism 5 on each side can also be driven to rotate synchronously by two third driving mechanisms respectively. Since the first milling and digging mechanism 4 on each side is arranged symmetrically, and the second milling and digging mechanism 5 on each side is also arranged symmetrically, the first milling and digging mechanism 4 and the second milling and digging mechanism 5 on one side will be described below: Referring to Figure 4 , Figure 4The side view structural schematic diagram of the tunneling machine is shown (the main machine is not shown in the figure), from the side view, the outer diameter of the first milling mechanism 4 is smaller than the outer diameter of the second milling mechanism 5, and the height position of the upper edge of the second milling mechanism 5 is located between the upper edge and the lower edge of the first milling mechanism 4, so, referring to Figure 4 and Figure 5 , the first milling mechanism 4 can cut out the upper half of the side wall plane, and the second milling mechanism 5 can cut out the lower half of the side wall plane, and the first milling mechanism 4 is located in front of the second milling mechanism 5, and when the second milling mechanism 5 cuts, it not only cuts out the lower half of the side wall plane, but also cuts out part of the plane cut out by the first milling mechanism 4, so that the cutting method can obtain better forming effect of the side wall planarization.

[0035] In order to prevent the flying of the broken stones in the process of cutting the side wall, the first trailer further comprises a first baffle 7 arranged on the walking frame 3 and located above the first milling mechanism 4, and a second baffle 8 arranged on the walking frame 3 and located above the second milling mechanism 5, the first baffle 7 and the second baffle 8 are respectively arc baffles, and the arc-shaped openings are downward.

[0036] The first milling mechanism 4 and the second milling mechanism 5 can respectively adopt a milling head or a rolling cutter, in some embodiments, the first milling mechanism 4 and the second milling mechanism 5 respectively adopt a milling head. As shown in Figure 1 and Figure 4 , the first milling mechanism 4 comprises a first milling head body arranged on the walking frame 3 and rotating around a first axis line, and a plurality of first milling teeth arranged on the outer circumferential surface of the first milling head body, part of the first milling teeth are arranged in a helical manner along the axial direction of the first milling head body, the other part of the first milling teeth are respectively distributed on the outer end portion of the first milling head body along the circumferential direction of the first milling head body, and all the first milling teeth are respectively arranged on the first milling head body in an inclined manner. Figure 1 and Figure 5 , the second milling mechanism 5 comprises a second milling head body arranged on the walking frame 3 and rotating around a second axis line, and a plurality of second milling teeth arranged on the outer circumferential surface of the second milling head body, part of the second milling teeth are arranged in a helical manner along the axial direction of the second milling head body, the other part of the second milling teeth are distributed on the outer end portion of the second milling head body along the circumferential direction of the second milling head body, and all the second milling teeth are respectively arranged on the second milling head body in an inclined manner.

[0037] In other embodiments, the second driving mechanism can also adopt a pneumatic motor or an electric motor, and the third driving mechanism can also adopt a pneumatic motor or an electric motor.

[0038] And from Figure 2It can also be seen that the first trailer also includes support shoe mechanisms disposed on opposite sides of the first frame 1. Each support shoe mechanism includes a support shoe 22 movably disposed on the first frame 1 along the width direction of the first frame 1 and a fourth drive mechanism for driving the support shoe 22. Support shoe mechanisms are sequentially spaced along the length direction of the first frame 1 on each side. Figure 1 As can be seen, four support shoe mechanisms are installed on the first frame 1, symmetrically arranged on opposite sides of the first frame 1. The outer surface of each support shoe 22 is an arc surface that mates with the circular tunnel. When milling the sidewall of the circular tunnel, the fourth drive mechanism first drives the support shoe 22 to move outward, abutting against the sidewall of the circular tunnel to counteract the reaction force during the milling process. Then, the first drive mechanism 6 drives the traveling frame 3 to move forward. The first milling mechanism 4 and the second milling mechanism 5 successively perform planar cutting on the sidewall of the circular tunnel. After cutting a certain distance, the trailer cylinder 20 is fully extended, and the piston of the first drive mechanism 6 is also fully extended. Before cutting the next distance, the support shoe 22 returns to its original position, the first drive mechanism 6 returns to its original position, the trailer cylinder 20 pulls the first trailer forward, the trailer cylinder 20 returns to its original position, and then the next cutting operation is performed.

[0039] In some embodiments, the fourth drive mechanism is a hydraulic cylinder; in other embodiments, the fourth drive mechanism may also be a pneumatic cylinder.

[0040] The structure of the second trailer is described below; see [link / reference]. Figures 2 to 3 As can be seen, the second trailer includes a second frame 9 rotatably connected to the rear of the first frame 1 via a pin, a second wheel assembly located at the bottom of the second frame 9, and collection devices respectively located on opposite sides of the second frame 9. The pin extends vertically to facilitate the turning of the second trailer when encountering curves during the movement of the first and second trailers. The collection devices are used to collect and transport the material cut by the first milling mechanism 4 and the second milling mechanism 5 to the bottom of the tunnel. See also Figure 7 The collection device includes a feeding plate 15 disposed on the side of the second frame 9, a receiving plate 16 whose end is rotatably connected to the feeding plate 15 about a third axis, and a fifth drive mechanism 21 connected between the feeding plate 15 and the receiving plate 16. The feeding plate 15 extends from front to back and from outside to inside along the length of the second frame 9. The rear end of the receiving plate 16 is rotatably connected to the front end of the feeding plate 15. The third axis extends along the vertical direction of the second frame 9. The fifth drive mechanism 21 drives the receiving plate 16 to rotate. The receiving plate 16 is used to collect the cut sidewall material, and the receiving plate 16 is also used to repair the roadway sidewall after being cut by the first milling mechanism 4 and the second milling mechanism 5. At the same time, the fifth drive mechanism 21 can also drive the receiving plate 16 to rotate to adjust the material collection and repair range.

[0041] See also Figure 7The collecting plate 16 includes a connecting part rotatably connected with the feeding plate 15 at the rear end part and a collecting part formed by bending the front end part of the connecting part forward, the connecting part extends from front to back and from outside to inside along the length direction of the second frame 9, and the front end part of the collecting part is sequentially and spacedly provided with a plurality of spades 17 along the length direction thereof. When the second trailer travels, the collecting plate 16 collects the cut material and simultaneously repairs the sidewall of the roadway, the collected material moves along the length direction of the feeding plate 15 to the bottom of the second frame 9, and finally falls into the bottom of the roadway to fill the bottom of the roadway to a certain extent.

[0042] In order to improve the safety of the roadway, referring to Figures 2 to 4 The second trailer further includes first anchor rod supporting devices arranged on the opposite sides of the second frame 9 and second anchor rod supporting devices arranged on the opposite sides of the second frame 9, the first anchor rod supporting devices and the second anchor rod supporting devices are arranged at intervals, and the first anchor rod supporting devices are located below the second anchor rod supporting devices. Each side first anchor rod supporting device includes a first anchor rod support 11 arranged on the second frame 9 and a first anchor rod machine 12 arranged on the first anchor rod support 11, the height of the first anchor rod machine 12 on the first anchor rod support 11 is adjustable; each side second anchor rod supporting device includes a second anchor rod support 13 arranged on the second frame 9 and a second anchor rod machine 14 arranged on the second anchor rod support 13, the height of the second anchor rod machine 14 on the second anchor rod support 13 is adjustable, and the second anchor rod machine 14 is a multi-degree-of-freedom anchor rod machine. In this way, the first anchor rod machine 12 and the second anchor rod machine 14 can work independently, the first anchor rod machine 12 can be used to fix the planar sidewall cut by the second milling and digging mechanism 5, and the second anchor rod machine 14 can be used to fix the planar sidewall and the arc-shaped sidewall on the top cut by the first milling and digging mechanism 4, the anchor rod supporting work efficiency is high, and the adjustment of the supporting range is more flexible.

[0043] In other embodiments, only one anchor rod supporting device can be arranged on each side of the second frame 9, the anchor rod supporting device includes an anchor rod support arranged on the second frame 9 and an anchor rod machine, the height of the anchor rod machine on the anchor rod support is adjustable, and the anchor rod machine is a multi-degree-of-freedom anchor rod machine, that is, can be used to fix the planar sidewall cut by the second milling and digging mechanism 5 and can be used to fix the planar sidewall and the arc-shaped sidewall on the top cut by the first milling and digging mechanism 4.

[0044] In order to facilitate the first trailer and the second trailer to travel in the circular roadway, referring to Figure 5 and Figure 6 The first wheel assembly includes first wheels 2 symmetrically arranged on the opposite sides of the first frame 1, the front part and the rear part of each side first frame 1 are both provided with the first wheels 2 along the length direction of the first frame 1, the wheel shafts of the first wheels 2 are respectively and obliquely arranged, and the wheel shafts of each first wheel 2 obliquely extend from the inside to the outside and from the bottom to the top of the first frame 1, so as to facilitate rolling in the roadway.

[0045] Similarly, the second wheel assembly comprises second wheels 10 symmetrically arranged on opposite sides of the second frame 9, and the front and rear portions of each side of the second frame 9 are provided with second wheels 10 along the length direction of the second frame 9, the wheel shafts of the second wheels 10 are respectively arranged in an inclined manner, and the wheel shafts of each second wheel 10 are inclined from the inner side to the outer side and from the lower side to the upper side of the second frame 9, so that the second frame 9 can roll in the roadway, and although the collecting device fills the cut material to the bottom of the roadway, the cut material is relatively small relative to the bottom of the roadway, and does not affect the rolling of the second wheels 10.

[0046] Referring to Figure 2 and Figure 3 , the press wheel 18 is connected to the rear portion of the second frame 9 through the connecting frame 19, the middle portion of the connecting frame 19 is hollow, and the press wheel 18 is rotatably arranged on the connecting frame 19 through a press wheel shaft, which extends along the width direction of the second frame 9.

[0047] The conveying system comprises a conveying belt and a power mechanism for driving the movement of the conveying belt, one end of the conveying belt is arranged in the main machine, then passes through the first frame 1, the second frame 9 and the connecting frame 19 in sequence, and extends to the rear of the press wheel 18, the conveying belt is used for conveying the cut material of the main machine to the gangue removal equipment and then to the outside of the roadway through the gangue removal equipment, and when the material on the conveying belt passes through the connecting frame 19, a part of the material falls to the bottom of the roadway, for example, a part of the material can be hung by a scraper and laid on the bottom of the roadway together with the material on the sidewall, and then compacted by the press wheel 18, so as to realize the planarization of the bottom of the roadway, obtain a semicircular arch-shaped roadway 23 with a semicircular cross-sectional shape, complete the one-time forming of the semicircular arch-shaped roadway, and avoid the secondary forming construction of the roadway.

[0048] In some embodiments, the main machine can adopt an open type hard rock tunneling machine, a single shield hard rock tunneling machine or a double shield hard rock tunneling machine.

[0049] The construction process of the roadway tunneling machine arranged as above for the coal mine roadway is as follows: The main machine travels and excavates a circular roadway, before the milling and digging device on the first trailer works, the supporting shoe 22 is abutted against the sidewall of the roadway under the action of the fourth driving mechanism, the trailer oil cylinder 20 is extended, and extends with the tunneling speed of the main machine.

[0050] While the trailer oil cylinder 20 is extended, the first milling and digging mechanism 4 and the second milling and digging mechanism 5 are respectively rotated under the action of the second driving mechanism and the third driving mechanism, and the sidewall of the roadway is milled and dug, and at the same time, the first milling and digging mechanism 4 and the second milling and digging mechanism 5 also move forward under the action of the first driving mechanism 6, so as to realize milling and digging stepping.

[0051] And in the first trailer during the journey to pull the second trailer journey, the material collecting device arranged on the second frame 9 collects and transports the cut side wall material to the roadway bottom, and lays on the roadway bottom, while the first anchor rod machine 12 and the second anchor rod machine 14 work respectively to supplement the support of the roadway side wall, and improve the construction safety.

[0052] Meanwhile, the main machine on the conveying belt digs out a part of the material to fall to the roadway bottom together with the material of the roadway side wall, and lays on the roadway bottom, and then is compacted by the compression wheel 18, so as to realize the planarization of the roadway bottom, realize the construction of the once-formed semicircular arch roadway, and avoid the secondary forming construction of the roadway.

[0053] It should also be noted that the terms "first", "second", "third", "fourth", "fifth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", "fourth", "fifth" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" or "many" is at least two, such as two, three or more, unless otherwise specifically limited.

[0054] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0055] In addition, in the description of the present application, unless otherwise specified and limited, it should be noted that the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication between two elements, it can be direct connection or indirect connection through intermediate medium, and those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0056] The above embodiments are only used to illustrate the embodiments of the present application, and are not a limitation on the embodiments of the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present application. Therefore, all equivalent technical solutions belong to the scope of the embodiments of the present application, and the patent protection scope of the embodiments of the present application should be defined by the claims.

Claims

1. A roadheader, characterized in that, The tunneling machine comprises: a main machine for excavating a circular tunnel; a first trailer comprising a first trailer frame (1) connected to the main machine, a first wheel assembly arranged at the bottom of the first trailer frame (1), a walking frame (3) arranged at opposite sides of the first trailer frame (1) and sliding along the length direction of the first trailer frame (1), a first driving mechanism (6) for driving the walking frame (3) to move, and a milling device arranged on each of the walking frames (3), the milling device being used for planarizing and cutting the opposite arc side walls of the circular tunnel; a second trailer comprising a second trailer frame (9) connected to the first trailer frame (1), a second wheel assembly arranged at the bottom of the second trailer frame (9), and a collecting device arranged at opposite sides of the second trailer frame (9), the collecting device being used for collecting and conveying the tunnel side wall materials cut by the milling device to the bottom of the tunnel; a press wheel (18) connected to the second trailer frame (9) through a connecting frame (19).

2. The roadheader according to claim 1, characterized in that The milling device comprises a first milling mechanism (4) arranged on each of the walking frames (3) and rotating around a first axis, a second driving mechanism for driving the first milling mechanism (4) to rotate, a second milling mechanism (5) arranged on each of the walking frames (3) and rotating around a second axis, and a third driving mechanism for driving the second milling mechanism (5) to rotate. The first axis and the second axis respectively extend along the width direction of the first trailer frame (1), and the first axis is located in front of and above the second axis. When the first trailer moves forward, the first milling mechanism (4) and the second milling mechanism (5) on each side rotate to respectively planarize and cut the opposite arc side walls of the circular tunnel.

3. A roadheader according to claim 2, characterised in that, The outer diameter of the first milling mechanism (4) is smaller than the outer diameter of the second milling mechanism (5).

4. A roadway heading machine according to claim 3, characterised in that, The height position of the upper edge of each side of the second milling mechanism (5) is located between the upper edge and the lower edge of the corresponding side of the first milling mechanism (4).

5. The roadheader according to claim 2, characterized in that The first milling mechanism (4) adopts a milling head or a hob, and the second milling mechanism (5) also adopts a milling head or a hob; and / or The second driving mechanism is a hydraulic motor, an electric motor or a pneumatic motor; and / or The third driving mechanism is a hydraulic motor, an electric motor or a pneumatic motor.

6. A roadheader according to any one of claims 1 to 5, characterized in that, The collecting device comprises a feeding plate (15) arranged at the side of the second frame (9), a collecting plate (16) with one end rotatably connected with the feeding plate (15) around a third axis, and a fifth driving mechanism (21) connected between the feeding plate (15) and the collecting plate (16), the feeding plate (15) is arranged from front to back and from outside to inside along the length direction of the second frame (9), the rear end of the collecting plate (16) is rotatably connected with the front end of the feeding plate (15), the third axis extends along the up-down direction of the second frame (9), the collecting plate (16) is used for collecting the side wall material cut off, and the collecting plate (16) is also used for repairing the side wall of the roadway after being cut by the milling device.

7. A roadway heading machine according to claim 6, characterised in that, The collecting plate (16) comprises a connecting part rotatably connected with the feeding plate (15) and a collecting part bent forward from the front end of the connecting part, and a plurality of spades (17) are arranged in sequence and at intervals along the length direction of the collecting part.

8. A roadheader according to any one of claims 1 to 5, characterized in that The pressing wheel (18) is rotatably arranged on the connecting frame (19) through a pressing wheel rotating shaft, and the pressing wheel rotating shaft extends along the width direction of the second frame (9).

9. A roadheader according to any one of claims 1 to 5, characterized in that, The first trailer further comprises a support shoe mechanism arranged at each side of the first frame (1) respectively, and each side of the support shoe mechanism comprises a support shoe (22) movably arranged on the first frame (1) along the width direction of the first frame (1) and a fourth driving mechanism for driving the support shoe (22) to move.

10. A mine roadheader according to any one of claims 1 to 5, characterized in that: The second trailer further comprises an anchor rod support device arranged at each side of the second frame (9) respectively; Each side of the anchor rod support device comprises an anchor rod support arranged at the side of the second frame (9) and an anchor rod machine arranged on the anchor rod support, the height of the anchor rod machine on the anchor rod support is adjustable, and the anchor rod machine is a multi-degree-of-freedom anchor rod machine.

11. A mine roadheader according to any one of claims 1 to 5, characterized in that: The second trailer further comprises a first anchor rod support device arranged at each side of the second frame (9) respectively and a second anchor rod support device arranged at each side of the second frame (9) respectively, each side of the first anchor rod support device and the second anchor rod support device are arranged at intervals, and the first anchor rod support device is located below the second anchor rod support device; Each side of the first anchor rod support device comprises a first anchor rod support (11) arranged on the second frame (9) and a first anchor rod machine (12) arranged on the first anchor rod support (11), and the height of the first anchor rod machine (12) on the first anchor rod support (11) is adjustable; Each side of the second anchor rod support device comprises a second anchor rod support (13) arranged on the second frame (9) and a second anchor rod machine (14) arranged on the second anchor rod support (13), and the height of the second anchor rod machine (14) on the second anchor rod support (13) is adjustable, and the second anchor rod machine (14) is a multi-degree-of-freedom anchor rod machine.

12. The mine development machine of claim 1, wherein, The middle part of the connecting frame (19) is hollow; and / or, The first driving mechanism (6) is a hydraulic cylinder or a pneumatic cylinder; and / or, The first frame (1) and the second frame (9) are connected by a pin shaft which extends in the up-down direction.

13. The mine development machine of claim 1, wherein, The main machine is a main machine for an open hard rock tunneling machine, a main machine for a single-shield hard rock tunneling machine or a main machine for a double-shield hard rock tunneling machine.

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