阅读说明：本技术 一种试验用微型掘进机系统 (Miniature development machine system for test ) 是由 赵海雷 王利明 曾垂刚 张兵 潘东江 李宏波 赵向波 王军 杨振兴 郭璐 翟乾智 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种试验用微型掘进机系统,涉及复杂地质条件下微型掘进机模拟掘进领域,包括支撑底架,所述支撑底架上表面前侧设置有微型掘进系统,所述支撑底架下方中间固定安装有用来平移所述微型掘进系统的升降架；所述支撑底架右侧固定安装有岩箱,所述岩箱顶部固定安装有四联液压系统,所述四联液压系统下端延伸至所述岩箱内部固定安装有压土板；有益效果在于：功能性强,实用性高,可以进行半断面可视化掘进和全断面高地应力模拟掘进,为现场高地应力大埋深复杂地质下盾构TBM掘进提供可靠的参考资料,同时也可为各高校和科研院所研究盾构TBM掘进过程中围岩扰动和应力变化规律提供可靠的平台。(The invention discloses a miniature tunneling machine system for a test, which relates to the field of simulated tunneling of miniature tunneling machines under complex geological conditions and comprises a supporting underframe, wherein the front side of the upper surface of the supporting underframe is provided with a miniature tunneling system, and the middle of the lower part of the supporting underframe is fixedly provided with a lifting frame for translating the miniature tunneling system; a rock box is fixedly mounted on the right side of the supporting underframe, a quadruple hydraulic system is fixedly mounted at the top of the rock box, and a soil pressing plate is fixedly mounted in the rock box and extends to the lower end of the quadruple hydraulic system; has the advantages that: the method has the advantages of being strong in functionality and high in practicability, being capable of performing half-section visual tunneling and full-section high-ground-stress simulation tunneling, providing reliable reference data for shield TBM tunneling under complex geology with high ground stress and large buried depth on site, and meanwhile providing a reliable platform for surrounding rock disturbance and stress change rules in the shield TBM tunneling process researched by colleges and universities and research institutions.)

1. A miniature roadheader system for testing, comprising a supporting chassis (12), characterized in that: a micro tunneling system is arranged on the front side of the upper surface of the supporting underframe (12), and a lifting frame (3) for translating the micro tunneling system is fixedly arranged in the middle of the lower part of the supporting underframe (12); a rock box (5) is fixedly mounted on the right side of the supporting underframe (12), a quadruple hydraulic system (4) is fixedly mounted at the top of the rock box (5), and a soil compacting plate is fixedly mounted at the lower end of the quadruple hydraulic system (4) and extends into the rock box (5); the front side of the rock box (5) is provided with a transparent visible surface (1), the visible surface (1) is provided with a sliding window (16) corresponding to the position of the micro-tunneling system, guide wheels (15) are fixedly arranged on the visible surface (1) corresponding to the upper edge and the lower edge of the sliding window (16), and a guide frame (14) matched with the guide wheels (15) is clamped on the front side of the micro-tunneling system; the rock box (5) left side face corresponds respectively miniature tunnelling system is provided with full section opening and half section opening, half section opening sets up and is corresponding sliding window (16) position.

2. A miniature roadheader system for testing according to claim 1, further comprising: the lifting frame (3) comprises a fixed frame (6), a base (7), an outer support (8), an inner support (9), a lifting hydraulic cylinder (10), a bracket (11) and a horizontal hydraulic cylinder (20), the left and right side edges of the fixed frame (6) are provided with guide rails, the guide rails are provided with bases (7) in a sliding way, a translation hydraulic cylinder (20) is fixedly arranged between the base (7) and the fixed frame (6), the left side and the right side of the base (7) are respectively and rotatably connected with an outer support (8) and an inner support (9), the middle of the outer support (8) is rotationally connected with the middle of the inner support (9), the upper end of the outer support (8) is rotationally connected with a bracket (11), the upper end of the inner support (9) is rotatably connected with a lifting hydraulic cylinder (10), the lower end of the lifting hydraulic cylinder (10) is rotatably connected to the fixed frame (6), and the upper end of the inner support (9) is supported on the bottom surface of the bracket (11).

3. A miniature roadheader system for testing according to claim 2, wherein: the miniature tunneling system comprises a platform frame, a tunneling device (2) and a pushing hydraulic cylinder (19), the platform frame is fixedly installed on the bracket (11), the tunneling device (2) is arranged on the right side of the upper surface of the platform frame, and the pushing hydraulic cylinder (19) used for pushing the tunneling device (2) is fixedly installed on the left side of the upper surface of the platform frame; digging device (2) inside below fixed mounting have unearthed auger (13), correspond on supporting chassis (12) unearthed auger (13) below fixed mounting have two around two unearthed fill (18).

4. A miniature roadheader system for testing according to claim 3, wherein: unearthed auger (13) includes auger motor (131), backup pad (132), driven gear (133), screw axis (134) and conveyer pipe (135) spindle nose (136), conveyer pipe (135) fixed mounting be in on tunnelling device (2), conveyer pipe (135) inside is inserted and is equipped with screw axis (134), screw axis (134) right-hand member pass through spindle nose (136) with tunnelling device (2) rotate and connect, screw axis (134) left end passes backup pad (132) fixed mounting has driven gear (133), backup pad (132) fixed mounting is in on the tunnelling device (2), fixed mounting has auger motor (131) on backup pad (132), fixed mounting has the driving gear on the output of auger motor (131), the driving gear with driven gear (133) mesh mutually.

5. A miniature roadheader system for testing according to claim 1, further comprising: the device also comprises a sealing cover used for sealing off the full-section opening and the half-section opening on the rock box (5) and a stop block (17) used for limiting the movement of the sliding window (16).

Technical Field

The invention relates to the field of simulated tunneling of a miniature tunneling machine under a complex geological condition, in particular to a miniature tunneling machine system for a test.

Background

The full-face tunnel boring machine is widely applied to mountain tunnels and subway projects due to the advantages of high speed, high efficiency, environmental protection and the like, compared with the traditional manual drilling and blasting method, the construction efficiency is greatly improved, and good application effect is obtained, however, unfavorable geology such as a fault fracture zone, a weak convergence stratum, a joint development stratum, karst development and the like is often encountered in the boring process of the TBM, great risks and challenges are brought to the construction of the full-face tunnel boring machine, the efficiency of the full-face tunnel boring machine is greatly reduced, if the principle of similarity ratio can be adopted before the construction of the full-face tunnel boring machine, the complex stratum occurring in the geological exploration is simulated in a test room, data analysis is carried out, surrounding rock change parameters are provided for the complex geological construction of the full-face tunnel boring machine, and reliable basis is provided for the advanced treatment of site construction, the tunneling efficiency of the on-site full-face tunnel boring machine under unfavorable geological conditions can be greatly improved, so that the development of a miniature tunneling machine system for testing is necessary for developing indoor simulation tests.

At present, a lot of tunnel excavation researches are carried out under the indoor simulated complex geological conditions, but analysis shows that the main research flow is construction by indoor numerical simulation and indoor simulated drilling and blasting needle method, and the research on the mini-type tunneling machine by the similar proportion principle simulates on-site excavation, but the current research has certain defects aiming at the guidance of on-site full-section tunnel boring machine excavation, and the specific expression is that the numerical simulation is possibly not accurate aiming at the selection of boundary conditions; the tunnel excavation test by the indoor drilling and blasting method cannot reflect the excavation working condition of the full-face tunnel boring machine; in addition, although a mini-type tunneling machine simulation field excavation test is researched through a similar proportion principle, most of the mini-type tunneling machine simulation field excavation test system simulates the working condition of shield excavation, the simulation of full-face hard rock excavation is less, meanwhile, half-face visual excavation cannot be realized, and the simulation of high ground stress cannot be realized.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a miniature roadheader system for testing.

The invention realizes the purpose through the following technical scheme:

a miniature tunneling machine system for a test comprises a supporting underframe, wherein a miniature tunneling system is arranged on the front side of the upper surface of the supporting underframe, and a lifting frame for horizontally moving the miniature tunneling system is fixedly arranged in the middle of the lower part of the supporting underframe; a rock box is fixedly mounted on the right side of the supporting underframe, a quadruple hydraulic system is fixedly mounted at the top of the rock box, and a soil pressing plate is fixedly mounted in the rock box and extends to the lower end of the quadruple hydraulic system; the front side of the rock box is provided with a transparent visible surface, the visible surface is provided with a sliding window corresponding to the position of the micro-tunneling system, guide wheels are fixedly arranged on the visible surface corresponding to the upper edge and the lower edge of the sliding window, and a guide frame matched with the guide wheels is clamped on the front side of the micro-tunneling system; the rock box left side face corresponds respectively miniature tunnelling system is provided with full section opening and half section opening, half section opening sets up and is corresponding the sliding window position.

Preferably: the crane includes mount, base, outer support, internal stay, plays to rise pneumatic cylinder, bracket and flat pneumatic cylinder, the mount left and right sides border sets up to the guide rail, it is provided with the base to slide on the guide rail, the base with fixed mounting has the translation pneumatic cylinder between the mount, the base left and right sides rotates respectively to be connected with outer support and internal stay, in the middle of the outer support with rotate in the middle of the internal stay and connect, the outer upper end that props rotates and is connected with the bracket, the internal stay upper end rotates and is connected with and plays to rise the pneumatic cylinder, it rotates to rise the pneumatic cylinder lower extreme and connects on the mount to play to rise the pneumatic cylinder lower extreme, the internal stay upper end is supported on the bracket bottom surface.

Preferably: the miniature tunneling system comprises a platform frame, a tunneling device and a propelling hydraulic cylinder, the platform frame is fixedly arranged on the bracket, the tunneling device is arranged on the right side of the upper surface of the platform frame, and the propelling hydraulic cylinder for propelling the tunneling device is fixedly arranged on the left side of the upper surface of the platform frame; the digging device is characterized in that an unearthing auger is fixedly arranged below the inner part of the digging device, and a front and a rear unearthing buckets are fixedly arranged below the unearthing auger and correspond to the supporting chassis.

Preferably: the auger that unearths includes auger motor, backup pad, driven gear, screw axis and conveyer pipe spindle nose, conveyer pipe fixed mounting be in on the tunnelling device, the inside screw axis that is equipped with that inserts of conveyer pipe, the screw axis right-hand member pass through the spindle nose with the tunnelling device rotates to be connected, the screw axis left end is passed backup pad fixed mounting has driven gear, backup pad fixed mounting is in on the tunnelling device, fixed mounting has auger motor in the backup pad, fixed mounting has the driving gear on auger motor's the output, the driving gear with driven gear meshes mutually.

Preferably: the rock box further comprises a sealing cover used for sealing the full-section opening and the half-section opening on the rock box and a stop block used for limiting the sliding window to move.

Compared with the prior art, the invention has the beneficial effects that: the method has the advantages of being strong in functionality and high in practicability, being capable of performing half-section visual tunneling and full-section high-ground-stress simulation tunneling, providing reliable reference data for shield TBM tunneling under complex geology with high ground stress and large buried depth on site, and meanwhile providing a reliable platform for surrounding rock disturbance and stress change rules in the shield TBM tunneling process researched by colleges and universities and research institutions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a miniature development machine system for testing according to the present invention.

Fig. 2 is a front view of a miniature experimental roadheader system according to the present invention.

Fig. 3 is a schematic perspective view of a rock box of the experimental miniature heading machine system.

Fig. 4 is a schematic perspective view of a crane of the experimental miniature heading machine system.

Fig. 5 is a schematic perspective view of the unearthed auger of the miniature tunneling machine system for the test.

The reference numerals are explained below:

1. a visible surface; 2. a tunneling device; 3. a lifting frame; 4. a quadruple hydraulic system; 5. a rock box; 6. a fixed mount; 7. a base; 8. externally supporting; 9. internal bracing; 10. a lifting hydraulic cylinder; 11. a bracket; 12. a support chassis; 13. a digging auger; 14. a guide frame; 15. a guide wheel; 16. a sliding window; 17. a stopper; 18. a soil discharging hopper; 19. a propulsion hydraulic cylinder; 20. a translation hydraulic cylinder; 131. a packing auger motor; 132. a support plate; 133. a driven gear; 134. a screw shaft; 135. a delivery pipe; 136. the shaft head.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention, and further, the terms "first", "second", etc., are used only for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more of such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be communicated with each other, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art through specific situations.

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1-5, a miniature tunneling machine system for test comprises a supporting base frame 12, a miniature tunneling system is arranged on the front side of the upper surface of the supporting base frame 12, a lifting frame 3 for translating the miniature tunneling system is fixedly arranged in the middle of the lower part of the supporting base frame 12, and the lifting frame 3 is used for adjusting the working position of the miniature tunneling system; a rock box 5 is fixedly arranged on the right side of the supporting underframe 12, the rock box 5 is used for containing a simulated soil layer, a quadruple hydraulic system 4 is fixedly arranged on the top of the rock box 5, the quadruple hydraulic system 4 is used for applying soil pressure, and a soil pressing plate is fixedly arranged at the lower end of the quadruple hydraulic system 4, which extends into the rock box 5; the front side of the rock box 5 is provided with a transparent visible surface 1, the visible surface 1 is provided with a sliding window 16 corresponding to the position of the micro-tunneling system, the sliding window 16 is used for sliding and sealing, the visible surface 1 is fixedly provided with guide wheels 15 corresponding to the upper edge and the lower edge of the sliding window 16, the front side of the micro-tunneling system is clamped with a guide frame 14 matched with the guide wheels 15, and the guide frame 14 is used for supporting and guiding; the left side face of the rock box 5 is provided with a full-section opening and a half-section opening corresponding to the micro-tunneling system respectively, and the half-section opening is arranged at the position corresponding to the sliding window 16; the lifting frame 3 comprises a fixing frame 6, a base 7, an outer support 8, an inner support 9, a lifting hydraulic cylinder 10, a bracket 11 and a translational hydraulic cylinder 20, wherein the edges of the left side and the right side of the fixing frame 6 are provided with guide rails, the base 7 is arranged on the guide rails in a sliding manner, the translational hydraulic cylinder 20 is fixedly arranged between the base 7 and the fixing frame 6 and is used for pushing the translation, the outer support 8 and the inner support 9 are respectively and rotatably connected to the left side and the right side of the base 7, the middle of the outer support 8 is rotatably connected with the middle of the inner support 9, the upper end of the outer support 8 is rotatably connected with the bracket 11, the upper end of the inner support 9 is rotatably connected with the lifting hydraulic cylinder 10, the lifting hydraulic cylinder 10 is used for jacking, the lower end of the lifting hydraulic cylinder 10 is rotatably connected to the fixing frame 6, and the upper end of the inner support 9 is supported on the bottom surface of the bracket 11; the micro tunneling system comprises a platform frame, a tunneling device 2 and a pushing hydraulic cylinder 19, wherein the platform frame is fixedly arranged on a bracket 11, the tunneling device 2 is arranged on the right side of the upper surface of the platform frame, the tunneling device 2 is used for simulating tunneling, and the pushing hydraulic cylinder 19 used for pushing the tunneling device 2 is fixedly arranged on the left side of the upper surface of the platform frame; a soil discharging auger 13 is fixedly arranged below the inner part of the tunneling device 2, the soil discharging auger 13 is used for discharging soil, and a front soil discharging hopper and a rear soil discharging hopper 18 are fixedly arranged on the supporting underframe 12 corresponding to the lower part of the soil discharging auger 13; the unearthed auger 13 comprises an auger motor 131, a support plate 132, a driven gear 133, a screw shaft 134 and a delivery pipe 135 shaft head 136, wherein the delivery pipe 135 is fixedly arranged on the tunneling device 2, the screw shaft 134 is inserted in the delivery pipe 135, the right end of the screw shaft 134 is rotatably connected with the tunneling device 2 through the shaft head 136, the left end of the screw shaft 134 penetrates through the support plate 132 and is fixedly provided with the driven gear 133, the support plate 132 is fixedly arranged on the tunneling device 2, the auger motor 131 is fixedly arranged on the support plate 132 and is used for driving, a driving gear is fixedly arranged on the output end of the auger motor 131 and is meshed with the driven gear 133; and the rock box further comprises a sealing cover for sealing the full-section opening and the half-section opening on the rock box 5 and a stop 17 for limiting the movement of the sliding window 16.

The working principle is as follows: the working mode 1: the method comprises the steps of pushing a jacking micro tunneling system through a lifting hydraulic cylinder 10 of a support frame, then pushing the micro tunneling system through a translation hydraulic cylinder 20, translating the micro tunneling system to a visual half-section tunneling station, retracting the lifting hydraulic cylinder 10 to place the micro tunneling system on a support underframe 12, fixedly clamping the micro tunneling system with a guide frame 14, filling similar soil in a rock box 5 in a layered manner, wherein the layered thickness is 20cm, embedding a soil pressure box and a displacement meter at fixed positions in the similar soil for monitoring the change of soil pressure and the displacement change of the similar soil during tunneling of a micro tunneling machine, removing a half-section opening sealing cover on the left side of the rock box 5 and a stop block 17 on the right side of a sliding window 16 after the similar soil is solidified for 28d, moving the guide frame 14 and a guide wheel 15 in a matched manner, pushing the sliding window 16 to slide rightwards along with the micro tunneling system by the guide frame 14, starting tunneling by the micro tunneling system, setting the rotating speed of a cutter head to be 4r/min, the cutter head penetration degree is 2mm/r, the total propelling displacement is 1200mm, the tunneling is normal, and the data are stable.

The working mode 2: the method comprises the steps that a lifting hydraulic cylinder 10 of a support frame is used for pushing a jacking micro tunneling system, then the micro tunneling system is pushed by a translation hydraulic cylinder 20 and translated to a pressurizable full-face tunneling station, the lifting hydraulic cylinder 10 contracts to place the micro tunneling system on a support underframe 12, similar soil is filled in a rock box 5 in a layered mode, the layered thickness is 20cm, a soil pressure box and a displacement meter are embedded in the similar soil at fixed positions and used for monitoring the change of soil pressure and the displacement change of the similar soil during tunneling of a micro tunneling machine, after the similar soil is solidified for 28d, a full-face opening sealing cover micro tunneling device 2 on the left side of the rock box 5 is removed for tunneling, the rotating speed of a cutter head is set to be 5r/min, the penetration degree of the cutter head is 2mm/r, the total pushing displacement is 1200mm, the top of the rock box 5 is pressurized for 500KPa, the tunneling is normal, and the data are stable.

Working mode 3: and (3) setting the micro tunneling system to be in an idle load state, and respectively adjusting the rotating speed and the penetration speed of the cutter head, wherein the rotating speed of the cutter head can reach 0-10r/min, the penetration degree of the cutter head can reach 0-5mm/r, and the data is normal.

The heading device 2, the quadruple hydraulic system 4, the lifting hydraulic cylinder 10, the unearthing auger 13, the propelling hydraulic cylinder 19 and the horizontal hydraulic cylinder 20 are all universal standard parts or parts known to those skilled in the art, and the structure and the principle of the parts are known to those skilled in the art through technical manuals or conventional experimental methods, so that the description is omitted.

While there have been shown and described what are at present considered to be the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is to be accorded the full scope of the invention as hereinafter claimed.