A multifunctional comprehensive tunnel excavation trolley

Abstract

The present invention provides a multifunctional comprehensive tunnel excavation trolley, comprising at least a trolley adapted to the tunnel's contour, and a traveling mechanism, a transverse lifting mechanism, an arch mounting mechanism, an anchor drilling mechanism, and auxiliary mechanisms mounted on the trolley. The trolley is a two-layer structure, comprising a gantry on the lower layer and a mobile support on the upper layer. The internal clearance of the gantry ensures the passage of conventional vehicles. The mobile support moves relative to the gantry, and its bottom is provided with a front support leg that can be extended and tilted. The arch mounting mechanism includes a lifting mechanism, a hoisting mechanism, a transport trolley, and an installation trolley. The present invention can integrate multiple functions such as auxiliary tunnel drilling, arch mounting, and anchor driving, making it easier for workers to load explosives and for other process equipment to pass under the gantry. This greatly improves the efficiency of tunnel excavation using the drill-and-blast method, reduces equipment procurement and maintenance costs for tunnel construction, and saves time and labor.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel face construction, and in particular to a multifunctional excavation trolley integrating excavation, arch installation, anchor driving and other functions. Background Art

[0002] During traditional drilling and blasting tunnel construction, a variety of equipment, including tunnel drilling trolleys, support arch installation trolleys, and personnel work platforms, are required at the front end of the tunnel. These equipment are suitable for different construction processes of tunnel construction. This traditional drilling and blasting tunnel construction has the following defects: (1) After the construction of one process is completed, the corresponding equipment needs to withdraw from the excavation face at the front end of the tunnel, while the construction equipment for the next process needs to enter the construction face at the front end of the tunnel, resulting in a long auxiliary time for equipment transfer and affecting work efficiency; (2) When the surrounding rock integrity is poor and the tunnel section width is limited, the tunnel is excavated using two steps, upper and lower steps, and general equipment cannot meet the requirements.

[0003] In order to solve the above problems, the present invention proposes a multifunctional comprehensive excavation trolley that integrates the functions of excavation, arch installation, anchor driving, etc. Summary of the Invention

[0004] The present invention proposes a multifunctional comprehensive excavation trolley for drill-and-blast tunnel construction that integrates multiple functions such as auxiliary tunnel drilling, arch frame installation, and anchor bolting, making it convenient for workers to load explosives and for other process equipment to pass under the gantry. This trolley can greatly improve the efficiency of drill-and-blast tunnel excavation, reduce the equipment procurement and maintenance costs of tunnel construction, and save time and labor.

[0005] The technical solution adopted to achieve the above-mentioned purpose of the present invention is:

[0006] A multifunctional comprehensive tunnel excavation trolley comprises at least a frame adapted to the contour of the tunnel, and a traveling mechanism, a transverse lifting mechanism, an arch mounting mechanism, an anchor drilling mechanism and auxiliary mechanisms installed on the frame;

[0007] The platform has a double-layer structure, including a gantry on the lower layer and a mobile support on the upper layer. The gantry is a door-shaped support structure, and the internal clearance of the gantry ensures the passage requirements of conventional vehicles. The bottom of the mobile support is connected to the top of the gantry via a load-bearing track. The top of the gantry is equipped with a first drive mechanism, which drives the mobile support to move relative to the gantry via a first chain and sprocket mechanism. The bottom of the front end of the mobile support is provided with a front support leg that can be extended and flipped.

[0008] The transverse lifting mechanism is distributed at the four corners of the gantry and installed on the outside of the gantry. It includes a transverse mechanism located below and a telescopic column located above. The two are fixedly connected up and down, wherein the bottom of the transverse mechanism is supported on the ground, and the top of the telescopic column is fixedly connected to the end of the gantry. A transverse oil cylinder is provided in the transverse mechanism, and the trolley is positioned on the center line of the tunnel through the lateral adjustment of the transverse oil cylinder. A jacking oil cylinder is provided inside the telescopic column, and the trolley is adjusted to rise and fall by the up and down extension of the jacking oil cylinder.

[0009] The arch frame installation mechanism includes a lifting mechanism, a hoisting mechanism, a transport trolley and an installation trolley, wherein the lifting mechanism is located at the rear end of the mobile bracket, and two groups are symmetrically arranged along the center line of the tunnel. The lifting mechanism is used to lift the arch frame from a horizontal state on the ground to a vertical state, and further lift it to the lifting mechanism; there are two groups of lifting mechanisms, which are symmetrically installed on the rear end of the door frame, and are used to lift the arch frame from a low position to a high position, and further transfer it to the transport trolley; there are two groups of transport trolleys, which are symmetrically distributed on the transport trolley tracks set on both sides of the mobile bracket. The transport trolleys move along the transport trolley tracks to lift the arch frame Transfer from the lifting mechanism to the installation trolley; the installation trolley is located on the installation trolley track provided on the upper part of the mobile support, and the installation trolley includes an installation trolley frame and a third drive mechanism fixedly connected to the installation trolley frame, an adjustment frame and a telescopic frame, and the third drive mechanism drives the installation trolley to move back and forth along the installation trolley track; the adjustment frame is located on the upper part of the installation trolley frame, and is used to adjust the position of the arch frame in the circumferential direction of the tunnel to ensure that the arch frame is centered; there are two groups of telescopic frames, which are symmetrically arranged on both sides of the installation trolley frame along the center line of the tunnel, and different arch frame installation spacings can be achieved by adjusting the telescopic frames;

[0010] The anchor drilling mechanism is located at the front end of the trolley, mounted on a mobile support and moves synchronously with the mobile support. The anchor drilling mechanism includes a curved track, a trolley, a rock drill gun, a rock drill gun support, and a propulsion cylinder. The curved track is adapted to the tunnel cross-section. The trolley is mounted on the curved track and moves along the curved track. The rock drill gun support is movably connected to the trolley via a rotating shaft and rotates around the rotating shaft. The rock drill gun is mounted on the rock drill gun support. The propulsion cylinder is located at the rear of the rock drill gun support and is used to advance the rock drill gun.

[0011] The auxiliary mechanism includes a working platform and a ladder installed on the platform.

[0012] The door frame includes a bottom beam, columns and an upper cross beam. There are two bottom beams on the left and right and both are arranged longitudinally. The columns are vertically fixed on the bottom beam. The upper cross beam is laterally connected and fixed between the tops of the two adjacent columns on the left and right and together form a door-shaped structure. A cross brace is provided between the front and rear adjacent upper cross beams to increase the stability of the door frame, and a scissors brace is provided between the front and rear adjacent columns to increase the stability of the door frame.

[0013] The movable bracket includes front legs, four groups of arched brackets and longitudinal beams. The four groups of arched brackets are arranged at intervals and are connected and fixed to each other by the longitudinal beams to form a whole. A running beam is arranged longitudinally at the bottom of the arched bracket. The running beam is located on the load-bearing track and moves along the load-bearing track. The left and right front legs are provided, and the two front legs are connected and fixed by a cross brace. The front legs are telescopic sleeve structures, and a telescopic cylinder is provided inside them. The top of the front legs is hingedly installed on the movable bracket, and a flipping cylinder that can flip the front legs back and forth is provided between the front legs and the movable bracket.

[0014] The load-bearing rails are provided with two groups on the left and right sides, which are fixed on the upper crossbeam in the portal frame. The load-bearing rails are of a box-type structure, and five groups of tugboats are provided inside the structure. Flange plates are provided on the left and right sides of the upper edge of the load-bearing rails. Openings for the outer edges of the tugboats to extend are provided at positions on the upper surface of the load-bearing rails corresponding to the tugboats. The movable bracket is supported on the tugboats as a whole through the running beams. Two groups of anti-hanging wheels are provided at the bottom of the arched brackets, and each group of anti-hanging wheels is located on the left and right sides of the load-bearing rails, and the wheel rims of the anti-hanging wheels are close to the lower surface of the flange plates in the load-bearing rails to prevent the movable bracket from deviating during movement on the load-bearing rails.

[0015] The first driving mechanism and the first chain sprocket mechanism are installed on the upper beam in the door frame. There are two groups of first chain sprocket mechanisms. The first chain sprocket mechanisms are arranged along the longitudinal direction. The bottom of the movable bracket is fixedly connected to the chain through a connecting piece. The first driving mechanism is connected and driven by the two output shafts of the reducer to the active sprockets in the two groups of first chain sprocket mechanisms, thereby driving the movement of the chain and further driving the movable bracket to move.

[0016] There are four groups of running mechanisms, which are distributed at the four corners of the portal frame and installed under the bottom beam. The running mechanism adopts press-fit tire running. Each group of running mechanisms includes two tires, a second driving mechanism and a second chain sprocket mechanism. The second driving mechanism is located in the middle of the two tires. The tires are driven to rotate through the second chain sprocket mechanism, driving the trolley to move forward or backward as a whole.

[0017] There are four groups of the transverse lifting mechanism, which are distributed at the front and rear ends of the two bottom beams in the gantry; the transverse mechanism includes a base, an anti-hanging plate, a transverse cylinder seat and a transverse oil cylinder. The base is supported on the ground when working, and the transverse oil cylinder seat is placed on the top surface of the base. The transverse oil cylinder is installed horizontally and its two ends are respectively connected to the base and the transverse oil cylinder seat. Each base is provided with two anti-hanging plates. The lower part of the anti-hanging plate is connected to the base by bolts, and the upper part presses the transverse oil cylinder seat on the top surface of the base to ensure that the transverse oil cylinder pushes the transverse oil cylinder seat to move on the base without deviation;

[0018] The telescopic column includes a telescopic inner sleeve, a telescopic outer sleeve, and a jacking cylinder. The lower part of the telescopic inner sleeve is connected to the top surface of the transverse cylinder seat by bolts to ensure that when the transverse cylinder pushes the transverse cylinder seat to move, the telescopic column can move accordingly; the main bodies of the telescopic outer sleeve and the telescopic inner sleeve of the telescopic column are both square tube structures, the jacking cylinder is installed in the square tube of the telescopic inner sleeve, and the telescopic inner sleeve is installed in the telescopic outer sleeve; the two ends of the jacking cylinder are respectively connected to the telescopic inner sleeve and the telescopic outer sleeve, and the relative sliding between the telescopic outer sleeve and the telescopic inner sleeve is achieved through the jacking cylinder; a flange connected to the end of the bottom beam is provided on the outside of the telescopic outer sleeve to enable the gantry to move with the telescopic sleeve.

[0019] The lifting mechanism includes a winch, a telescopic sleeve, a pulley block and a hook. The pulley block is installed on both ends of the telescopic sleeve. The telescopic sleeve structure can adjust the spacing between the pulley blocks to adapt to different work requirements.

[0020] The lifting mechanism includes a guide frame, a lifting trolley, a fourth driving mechanism and a fourth chain sprocket mechanism. The guide frame structure is a double-groove steel inverted buckle, and the middle gap of the double-groove steel ensures that the chain of the fourth chain sprocket mechanism can pass freely; the upper and lower ends of the lifting trolley are respectively connected to the chain, and the fourth chain sprocket mechanism is driven by the fourth driving mechanism to realize the lifting trolley to move up and down along the guide frame, lifting the steel arch frame from a low position to a high position; the running track of the lifting trolley is the double-groove steel structure of the guide frame, and a single lifting trolley has four running wheels symmetrically installed on the outside of the double-groove steel, and four guide wheels are installed in the middle gap of the double-groove steel structure to prevent the lifting trolley from running off.

[0021] The transport trolley includes a transport trolley frame, a longitudinal conveying device, a longitudinal conveying rail, a jacking mechanism, a fifth drive mechanism and a fifth chain sprocket mechanism. The longitudinal conveying device is divided into two parts. The upper part is an arch frame fixing device, which fixes the arch frame by adjusting the length of the screw. The lower part is a wheel group arranged on the longitudinal conveying rail, which can realize the movement of the longitudinal conveying device along the longitudinal conveying rail; the jacking mechanism is located below the longitudinal conveying rail. The jacking mechanism is an inner and outer sleeve structure, including an inner sleeve, an outer sleeve and an oil cylinder connecting the inner sleeve and the outer sleeve. The upper part of the inner sleeve is connected to the lower part of the longitudinal conveying rail, and the lower part of the outer sleeve is connected to the transport trolley frame. The jacking mechanism can realize the relative movement of the inner and outer sleeves to adjust the height of the longitudinal conveying rail; the transport trolley frame is located on the transport trolley rail, and the fifth drive mechanism drives the transport trolley frame to move through the fifth chain sprocket mechanism, so that the entire transport trolley moves along the transport trolley rail arranged on the movable bracket.

[0022] The adjusting frame in the installation trolley is arranged at the center line of the trolley, and the adjusting frame includes an adjusting longitudinal beam, a swing jacking device, a swing cylinder and an arch frame fixing device; the longitudinal beam is a square tube structure, and a plurality of flanges are distributed on its side, and its lower part is connected to the installation trolley frame through a hinge ear. The swing jacking device is provided with four groups, which are installed on the flanges on the sides of the longitudinal beam, and different arch frame installation spacings are achieved by adjusting the installation position of the swing jacking device on the longitudinal beam flange; the swing jacking device is an inner and outer sleeve structure, including an inner sleeve, an outer sleeve and an oil cylinder connecting the inner sleeve and the outer sleeve, which can realize the relative movement of the inner and outer sleeves; the arch frame fixing device is located at the top of the swing jacking device and is connected to the inner sleeve of the swing jacking device. The arch frame fixing device includes two ear plates with a spacing adapted to the outer dimensions of the arch frame, and a screw that can adjust the unscrewing length to fix the arch frame; the two ends of the swing cylinder are respectively connected to the installation trolley frame and the longitudinal beam, and the swing cylinder is provided with two groups, distributed at the front and rear ends of the longitudinal beam. The extension and contraction of the swing cylinder can drive the adjusting frame as a whole to rotate around the hinge ear at the lower part of the longitudinal beam.

[0023] The telescopic frame in the installation trolley includes a telescopic longitudinal beam, a telescopic jacking device and an arch frame fixing device. A plurality of flanges are evenly distributed on the top edge of the telescopic longitudinal beam. The arch frame fixing device is installed on the telescopic longitudinal beam through the flange. Different arch frame installation spacings can be achieved by changing the installation position of the arch frame fixing device on different flanges of the telescopic longitudinal beam; the telescopic jacking device is provided with two groups, which are inner and outer sleeve structures, including an inner sleeve, an outer sleeve and an oil cylinder connecting the inner sleeve and the outer sleeve, which can realize relative movement of the inner and outer sleeves, the outer sleeve is connected to the installation trolley frame, and the inner sleeve is connected to the bottom edge of the telescopic longitudinal beam.

[0024] The anchor drilling mechanism includes three groups of traveling trolleys, rock drill guns, rock drill gun brackets and propulsion cylinders, which are distributed on the top and both sides of the curved track. The main body of the rock drill gun bracket is a double-slot steel inverted buckle, and the rock drill gun is installed in the gap between the double-slot steels. The traveling trolley includes a reducer, a trolley frame, a traveling wheel and a sixth chain sprocket mechanism. The reducer drives the traveling wheel through the sixth chain sprocket mechanism to realize the movement of the traveling trolley along the curved track.

[0025] A telescopic platform is provided below the working platform provided at the side of the platform. The telescopic platform is supported and connected to the working platform and can be extended from below the working platform by being pushed by the platform oil cylinder.

[0026] Compared to existing technologies, the multifunctional comprehensive tunnel excavation trolley provided by the present invention has the following advantages: 1. The multifunctional comprehensive tunnel excavation trolley provided by the present invention integrates tunnel excavation and support, enabling assistance with manual air gun drilling and blasting, anchor bolt drilling, anchor bolt installation and grouting, and arch frame mesh installation. This improves construction efficiency, reduces labor intensity, and reduces the cost and maintenance of supporting tunnel construction machinery. 2. The multifunctional comprehensive tunnel excavation trolley provided by the present invention, which is advanced by a mobile support, can accommodate both full-section and step-type tunnel construction techniques. 3. The multifunctional comprehensive tunnel excavation trolley provided by the present invention can remain in the tunnel excavation face during slag discharge, allowing simultaneous operations such as anchor bolt installation and grouting, and arch frame mesh installation, resulting in high efficiency. 4. The multifunctional comprehensive tunnel excavation trolley provided by the present invention is equipped with three sets of rock drills arranged along a curved track circumferentially along the tunnel. Each set of rock drills can move independently, without interfering with each other during operation. The rock drills can move circumferentially or longitudinally with the mobile support, achieving full coverage of the anchor bolt drilling area in the arch frame installation area. 5. The multifunctional comprehensive excavation trolley provided by the present invention can achieve simultaneous installation of multiple arches with different spacings by adjusting the flange installation position, thereby improving work efficiency. 6. The multifunctional comprehensive excavation trolley of the present invention is provided with a hidden telescopic platform on the side wall. When the platform is hidden, it saves space and facilitates the passage of equipment. When the platform is extended, it increases the operating area and facilitates workers' operation. On the other hand, when the arch is installed, the telescopic platform can push the arch on the side wall outward to fit the designed section, which can meet various work needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a side view of the multifunctional comprehensive excavation trolley of the present invention;

[0028] Figure 2 The main view of the multifunctional comprehensive excavation trolley of the present invention Figure 1 ;

[0029] Figure 3 The main view of the multifunctional comprehensive excavation trolley of the present invention Figure 2 ;

[0030] Figure 4 This is a cross-sectional view of the traveling mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0031] Figure 5 This is a side view of the traveling mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0032] Figure 6 This is a front view of the transverse lifting mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0033] Figure 7 This is a side view of the transverse movement and lifting mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0034] Figure 8 This is a structural diagram of the gantry of the multifunctional comprehensive excavation trolley of the present invention;

[0035] Figure 9 This is a side view of the mobile support of the multifunctional comprehensive excavation trolley of the present invention;

[0036] Figure 10 This is a front view of the movable bracket of the multifunctional comprehensive excavation trolley of the present invention;

[0037] Figure 11 This is a structural diagram of the arch lifting mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0038] Figure 12 This is a front view of the arch lifting mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0039] Figure 13 This is a side view of the arch lifting mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0040] Figure 14 This is a structural diagram of the arch transport trolley of the multifunctional comprehensive excavation trolley of the present invention;

[0041] Figure 15 This is a front view of the arch mounting trolley of the multifunctional comprehensive excavation trolley of the present invention;

[0042] Figure 16 A top view of the arch mounting trolley of the multifunctional comprehensive excavation trolley of the present invention;

[0043] Figure 17 This is a side view of the arch mounting trolley of the multifunctional comprehensive excavation trolley of the present invention;

[0044] Figure 18 This is a schematic diagram of the arch fixing device of the multifunctional comprehensive excavation trolley of the present invention;

[0045] Figure 19 This is a structural diagram of the anchor drilling mechanism of the multifunctional comprehensive excavation trolley of the present invention;

[0046] Figure 20 This is a schematic diagram of the working platform of the multifunctional comprehensive excavation trolley of the present invention;

[0047] Figure 21 This is a schematic diagram of the telescopic platform of the multifunctional comprehensive excavation trolley of the present invention;

[0048] Figure 22 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 1 ;

[0049] Figure 23Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 2 ;

[0050] Figure 24 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 3 ;

[0051] Figure 25 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 4 ;

[0052] Figure 26 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 5 ;

[0053] Figure 27 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 6 ;

[0054] Figure 28 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 7 ;

[0055] Figure 29 Schematic diagram of the step method construction of the multifunctional comprehensive excavation trolley of the present invention Figure 8 ;

[0056] Figure 30 This is a schematic diagram of the full-section construction method of the multifunctional comprehensive excavation trolley of the present invention Figure 1 ;

[0057] Figure 31 This is a schematic diagram of the full-section construction method of the multifunctional comprehensive excavation trolley of the present invention Figure 2 ;

[0058] Figure 32 This is a schematic diagram of the tunnel face drilling process using the step method of the multifunctional comprehensive excavation trolley of the present invention;

[0059] Figure 33 This is a schematic diagram of the tunnel face drilling process using the multifunctional comprehensive excavation trolley of the present invention;

[0060] In the figure: 1-travel mechanism, 11-press-fit tire, 12-second drive mechanism, 13-second chain sprocket mechanism; 2-transverse lifting mechanism, 211-base, 212-anti-hanging plate, 213-transverse cylinder seat, 214-transverse cylinder, 221-telescopic inner sleeve, 222-telescopic outer sleeve, 223-lifting cylinder; 3-gantry, 31-bottom beam, 32-column, 33-upper beam; 4-mobile bracket, 41-arch bracket, 42-longitudinal beam, 43-bearing track, 44-tug, 45-anti-hanging wheel, 46-front support leg, 47-first drive mechanism; 5-installation trolley, 51-third drive mechanism, 52-installation trolley frame, 53-adjustment frame, 531-swinging jacking device, 532-adjustment longitudinal beam, 533-swinging cylinder, 534- Arch fixing device, 5341-ear plate, 5342-screw, 54-telescopic frame; 6-transport trolley, 61-longitudinal delivery device, 62-longitudinal delivery track, 63-lifting mechanism, 64-fifth drive mechanism, 65-transport trolley track; 7-lifting mechanism, 71-winch, 72-telescopic sleeve, 73-pulley block; 8-lifting mechanism, 81-guide frame, 82-lifting trolley, 83-fourth drive mechanism, 821-traveling wheel, 822-guide wheel; 9-anchor drilling mechanism, 91-arc track, 92-traveling trolley, 93-rock drill gun bracket, 94-propulsion cylinder; 10-attachment mechanism, 101-platform cylinder, 102-working platform, 103-telescopic platform, 1031-cylinder connecting ear plate, 1032-frame, 1033-guide column. DETAILED DESCRIPTION

[0061] The present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following embodiments.

[0062] The present invention provides a multifunctional tunnel excavation trolley, the overall structure of which is based on Figure 1 、 Figure 2 and Figure 3 As shown, it includes a platform adapted to the contour of the tunnel, a traveling mechanism 1, a transverse lifting mechanism 2, an arch mounting mechanism, an anchor drilling mechanism 9 and an auxiliary mechanism 10 installed on the platform, and an electric hydraulic system (not shown in the figure) located on the vehicle body that provides operating power for the various components on the trolley.

[0063] The gantry is a double-layer structure, including a gantry 3 located at the lower layer and a movable bracket 4 located at the upper layer. The gantry is a door-shaped bracket structure, such as Figure 8As shown, the internal clearance of the portal frame ensures the passage requirements of conventional vehicles; the portal frame includes a bottom beam 31, columns 32, and an upper crossbeam 33. There are two bottom beams on the left and right, both arranged longitudinally. The columns are vertically fixed to the bottom beam. The upper crossbeam is laterally connected and fixed between the tops of the two adjacent left and right columns to form a portal structure. A cross brace is provided between the front and rear adjacent upper crossbeams to increase the stability of the portal frame, and a scissor brace is provided between the front and rear adjacent columns to increase the stability of the portal frame. Due to the high internal clearance of the portal frame, the multifunctional comprehensive excavation trolley provided in the present invention can remain in the tunnel excavation face when discharging slag. Anchor bolt installation and grouting, arch frame mesh installation, etc. can be carried out simultaneously during slag discharge, resulting in high work efficiency.

[0064] The structure of the mobile bracket is as follows Figure 9 and Figure 10 As shown, its bottom is connected to the top of the gantry via a load-bearing track. A first drive mechanism 47 is mounted on the top of the gantry. The first drive mechanism drives the mobile support relative to the gantry via a first chain and sprocket mechanism. The bottom of the front end of the mobile support is provided with a front support leg that can be extended and flipped. Specifically, the mobile support includes a front support leg 46, four sets of arched supports 41, and a longitudinal beam 42. The four sets of arched supports are spaced apart and connected to each other by the longitudinal beam to form a whole. A running beam is provided longitudinally at the bottom of the arched supports. The running beam is located on the load-bearing track 43 and moves along the load-bearing track.

[0065] The front legs 46 are provided with two left and right legs, connected and fixed by a cross brace. The front legs are telescopic sleeve structures with telescopic cylinders installed inside. The tops of the front legs are hingedly mounted on the mobile brackets, and a tilting cylinder is installed between the front legs and the mobile brackets to enable the front legs to tilt forward and backward. During step construction, the front legs 46 are extended and supported on the ground of the upper step, ensuring the overall stability of the equipment during the step construction. During full-section construction, the front legs 46 can be retracted without affecting the lower clearance of the trolley.

[0066] The load-bearing rails 43 are provided with two groups on the left and right sides, which are fixed on the upper crossbeam in the portal frame. The load-bearing rails are of a box-type structure, and five groups of tugboats 44 are provided inside. Flange plates are provided on the left and right sides of the upper edge of the load-bearing rails. Openings for the outer edges of the tugboats to extend are provided at positions on the upper surface of the load-bearing rails corresponding to the tugboats. The entire mobile bracket is supported on the tugboats through the running beams; two groups of anti-hanging wheels 45 are provided at the bottom of the arched bracket, and each group of anti-hanging wheels is located on the left and right sides of the load-bearing rails, and the wheel rims of the anti-hanging wheels are close to the lower surface of the flange plates in the load-bearing rails to prevent the mobile bracket from deviating during movement on the load-bearing rails.

[0067] The first driving mechanism 47 and the first chain sprocket mechanism are installed on the upper beam in the door frame. There are two groups of first chain sprocket mechanisms. The first chain sprocket mechanisms are arranged along the longitudinal direction. The bottom of the movable bracket is fixedly connected to the chain through a connecting piece. The first driving mechanism is connected and driven by the two output shafts of the reducer to the active sprockets in the two groups of first chain sprocket mechanisms, thereby driving the movement of the chain and further driving the movable bracket to move.

[0068] There are four groups of running mechanisms: Figure 4 and Figure 5 As shown, they are distributed at the four corners of the gantry and installed under the bottom beam; the running mechanism uses a press-fit tire 11 for running, and each set of running mechanisms includes two tires and a second driving mechanism 12 and a second chain sprocket mechanism 13. The second driving mechanism is located in the middle of the two tires, and the tires are driven to rotate through the second chain sprocket mechanism, driving the trolley to move forward or backward as a whole.

[0069] The structure of the transverse lifting mechanism is as follows Figure 6 and Figure 7 As shown, they are distributed at the four corners of the trolley, with a total of four groups, and are installed on the outside of the gantry, specifically at the front and rear ends of the two bottom beams in the gantry; the transverse lifting mechanism includes a transverse mechanism located at the bottom and a telescopic column located at the top, the two are fixedly connected up and down, wherein the bottom of the transverse mechanism is supported on the ground, and the top of the telescopic column is connected and fixed to the end of the gantry; a transverse cylinder is provided in the transverse mechanism, and the trolley is placed on the center line of the tunnel as a whole through the lateral adjustment of the transverse cylinder; the transverse mechanism includes a base 211, an anti-hanging plate 212, a transverse cylinder seat 213 and a transverse cylinder 214, and the base is supported on the ground when working, and the transverse cylinder seat is placed on the top surface of the base, and the transverse cylinder is installed horizontally and its two ends are respectively connected to the base and the transverse cylinder seat, and each base is provided with two anti-hanging plates, the lower part of the anti-hanging plate is connected to the base by bolts, and the upper part presses the transverse cylinder seat on the top surface of the base to ensure that the transverse cylinder pushes the transverse cylinder seat to move on the base without deviation.

[0070] A lifting cylinder is provided inside the telescopic column, and the overall lifting and lowering of the trolley is adjusted by the up and down extension and contraction of the lifting cylinder; the telescopic column includes a telescopic inner sleeve 221, a telescopic outer sleeve 222, and a lifting cylinder 223. The lower part of the telescopic inner sleeve is connected to the top surface of the transverse cylinder seat by bolts to ensure that when the transverse cylinder pushes the transverse cylinder seat to move, the telescopic column can move therewith; the main body of the telescopic outer sleeve and the telescopic inner sleeve of the telescopic column are both square tube structures, the lifting cylinder is installed in the square tube of the telescopic inner sleeve, and the telescopic inner sleeve is installed in the telescopic outer sleeve; the two ends of the lifting cylinder are respectively connected to the telescopic inner sleeve and the telescopic outer sleeve, and the relative sliding between the telescopic outer sleeve and the telescopic inner sleeve is realized by the lifting cylinder; the outer side of the telescopic outer sleeve is provided with a flange connected to the end of the bottom beam, so that the gantry follows the movement of the telescopic sleeve.

[0071] The arch installation mechanism includes a lifting mechanism 7, a lifting mechanism 8, a transport trolley 6 and an installation trolley 5, wherein the lifting mechanism is as follows Figure 11 As shown, two groups of lifting mechanisms are symmetrically arranged along the center line of the tunnel at the rear end of the mobile support, and are used to lift the arch frame from a horizontal state on the ground to a vertical state, and further lift it onto the lifting mechanism; the lifting mechanism includes a winch 71, a telescopic sleeve 72, a pulley block 73 and a hook. The pulley block is installed on both ends of the telescopic sleeve. The telescopic sleeve structure can adjust the spacing between the pulley blocks to adapt to different work requirements.

[0072] Lifting mechanism such as Figure 12 and Figure 13 As shown, there are two sets of them symmetrically installed on the rear end of the portal frame, which are used to lift the arch frame from a low position to a high position and further transfer it to the transport trolley. The lifting mechanism includes a guide frame 81, a lifting trolley 82, a fourth drive mechanism 83 and a fourth chain sprocket mechanism. The guide frame structure is a double-channel steel buckle, and the middle gap of the double-channel steel ensures that the chain of the fourth chain sprocket mechanism can pass freely; the upper and lower ends of the lifting trolley are respectively connected to the chain, and the fourth drive mechanism drives the fourth chain sprocket mechanism to realize the lifting trolley's up and down movement along the guide frame, lifting the steel arch frame from a low position to a high position; the running track of the lifting trolley is the double-channel steel structure of the guide frame. A single lifting trolley has four running wheels 821 symmetrically installed on the outside of the double-channel steel, and four guide wheels 822 are installed in the middle gap of the double-channel steel structure to prevent the lifting trolley from running off.

[0073] Transport trolleys such as Figure 14 As shown, there are two groups of transport trolley tracks 65 symmetrically distributed on both sides of the mobile bracket. The transport trolley moves along the transport trolley track to transfer the arch frame from the lifting mechanism to the installation trolley; the transport trolley includes a transport trolley frame, a longitudinal conveying device 61, a longitudinal conveying track 62, a lifting mechanism 63, a fifth drive mechanism 64 and a fifth chain sprocket mechanism. The longitudinal conveying device is divided into two parts. The upper part is an arch frame fixing device, which fixes the arch frame by adjusting the screw out length. The lower part is a wheel set arranged on the longitudinal conveying track, which can realize the longitudinal conveying device. Moves along the longitudinal conveying track; the jacking mechanism is located below the longitudinal conveying track, the jacking mechanism is an inner and outer sleeve structure, including an inner sleeve, an outer sleeve and a cylinder connecting the inner sleeve and the outer sleeve, the upper part of the inner sleeve is connected to the lower part of the longitudinal conveying track, and the lower part of the outer sleeve is connected to the transport trolley frame. The jacking mechanism can realize the relative movement of the inner and outer sleeves to adjust the height of the longitudinal conveying track; the transport trolley frame is located on the transport trolley track, and the fifth driving mechanism drives the transport trolley frame to move through the fifth chain sprocket mechanism, so that the entire transport trolley can move along the transport trolley track arranged on the movable bracket.

[0074] The installation trolley 5 is located on the installation trolley track provided on the upper part of the mobile bracket. The structure of the installation trolley is as follows: Figure 15 、 Figure 16 and Figure 17 As shown, it includes a mounting trolley frame 52 and a third drive mechanism 51 fixedly connected to the mounting trolley frame, an adjustment frame 53 and a telescopic frame 54. The third drive mechanism drives the mounting trolley to move back and forth along the mounting trolley track; the adjustment frame is located on the upper part of the mounting trolley frame and is used to adjust the position of the arch frame in the circumferential direction of the tunnel to ensure that the arch frame is centered; the adjustment frame is arranged at the center line of the trolley and includes an adjustment longitudinal beam 532, a swing jacking device 531, a swing cylinder 533 and an arch frame fixing device 534; the longitudinal beam is a square tube The structure has multiple flanges distributed on its side, and its lower part is connected to the mounting trolley frame through hinged ears. There are four sets of swing jacking devices, which are installed on the flanges on the side of the longitudinal beam. Different arch frame installation spacing can be achieved by adjusting the installation position of the swing jacking device on the longitudinal beam flange; the swing jacking device is an inner and outer sleeve structure, including an inner sleeve, an outer sleeve and an oil cylinder connecting the inner and outer sleeves, which can realize the relative movement of the inner and outer sleeves; the arch frame fixing device is located at the top of the swing jacking device and is connected to the inner sleeve of the swing jacking device. The arch frame fixing device is as follows Figure 18 As shown, it includes two ear plates 5341 with a spacing adapted to the outer dimensions of the arch frame, and a screw 5342 whose unscrewing length can be adjusted to fix the arch frame; the two ends of the swing cylinder are respectively connected to the mounting trolley frame and the longitudinal beam, and there are two groups of swing cylinders, which are distributed at the front and rear ends of the longitudinal beam. The extension and retraction of the swing cylinder can drive the adjustment frame as a whole to rotate around the hinge ear at the lower part of the longitudinal beam.

[0075] There are two sets of telescopic frames, symmetrically arranged on either side of the installation trolley frame along the tunnel centerline. Adjusting the telescopic frames allows for different arch installation spacings. The telescopic frames consist of a telescopic longitudinal beam, a telescopic lifting device, and an arch fixture. Multiple flanges are evenly distributed on the top edge of the telescopic longitudinal beam. The arch fixture is mounted to the telescopic longitudinal beam via the flanges. Different arch installation spacings can be achieved by changing the mounting position of the arch fixture on different flanges of the telescopic longitudinal beam. Two sets of telescopic lifting devices are provided. They are an inner and outer sleeve structure, comprising an inner sleeve, an outer sleeve, and a hydraulic cylinder connecting the two sleeves, enabling relative movement between them. The outer sleeve is connected to the installation trolley frame, while the inner sleeve is connected to the bottom edge of the telescopic longitudinal beam.

[0076] Before construction, adjust the adjustment frame in the middle of the installation trolley and the telescopic frames on both sides according to the installation spacing of different arch frames in the design requirements, so that when the installation trolley carries multiple arch frames, the spacing between the arch frames is consistent with the design requirements, and there is no need to adjust the arch frame spacing again during installation. During work, when it is necessary to adjust the circumferential position of the arch frame in the tunnel, loosen the screw of the arch frame fixing device. At this time, the arch frame can move freely along the ring. After the adjustment is completed, tighten the screw of the arch frame fixing device to fix the arch frame so that the arch frame does not shake during the carrying process. During the adjustment process, the angle of the adjustment frame can be changed by swinging the oil cylinder to complete the circumferential position adjustment of the arch frame. After the arch frame to be installed is carried to the predetermined position, the middle adjustment frame and the telescopic frames on both sides are lifted by the telescopic sleeve to lift the arch frame to be installed to the installation position for arch frame installation.

[0077] Anchor drilling mechanism 9 Figure 19 As shown, it is located at the front end of the trolley, installed on the mobile bracket and moves synchronously with the mobile bracket. The anchor drilling mechanism includes an arc track 91, a traveling trolley 92, a rock drill, a rock drill bracket 93 and a propulsion cylinder 94. The arc track is adapted to the tunnel section. The traveling trolley is installed on the arc track and moves along the arc track. The rock drill bracket is movably connected to the traveling trolley through a rotating shaft and rotates around the rotating shaft. The rock drill is installed on the rock drill bracket. The propulsion cylinder is located on the rock drill bracket. The rock drill is advanced by a propulsion cylinder at the rear of the track. The anchor drilling mechanism comprises three groups of trolleys, rock drills, rock drill brackets, and propulsion cylinders, distributed at the top and sides of the curved track. The rock drill brackets are constructed of inverted double-channel steel, with the rock drills installed in the gap between the two channels. The trolley includes a reducer, a trolley frame, running wheels, and a sixth chain and sprocket mechanism. The reducer drives the running wheels via the sixth chain and sprocket mechanism, enabling the trolley to move along the curved track. The three groups of rock drills provided in the present invention can each move independently without interfering with each other during operation. The rock drills can move circumferentially or longitudinally with the movable bracket, achieving full coverage of anchor drilling in the arch mounting area.

[0078] The auxiliary mechanism 10 includes a working platform 102 and a ladder mounted on the platform. A telescopic platform 101 is provided below the working platform provided on the side of the platform. Figure 20 and Figure 21 As shown, the telescopic platform is connected to the work platform support and can be extended from below the work platform by the platform cylinder 103. The main body of the telescopic platform is a frame 1032, with guide posts 1033 on both sides and cylinder connection lugs 1031 at the rear end. The hidden telescopic platform saves space when hidden, facilitating equipment access. When extended, it increases the operating area and facilitates worker operation. During arch installation, the telescopic platform can push the arch frame on the side wall outward to fit the designed cross-section, meeting various work needs.

[0079] The full-section construction arch frame described in the present invention is divided into 5 sections, and adjacent sections are connected with bolts. During construction, the three arch frame sections at the arch top are connected and tightened, and the two sections at the tunnel side walls and the section at the arch top are movably connected at the beginning of installation and can rotate with each other, so that the two sections at the side walls can droop naturally and do not occupy the construction position at the tunnel side walls. After the arch frame at the tunnel arch top is installed, the arch frame at the side wall is installed. At this time, the oil cylinder pushes the telescopic platform out, and the outer edge of the telescopic platform resists the naturally drooping arch frame at the side wall. The oil cylinder continues to extend until the outer edge of the telescopic platform pushes the arch frame at the side wall to the predetermined installation position, and the arch frame at the side wall and the arch frame at the arch top are tightened, and the installation of this arch frame is completed.

[0080] The step method of the present invention is to construct the arch frame at the arch top into three sections, and the adjacent sections are fastened and connected with bolts and can be directly installed. After the installation at the arch top is completed, the arch frame at the side wall can be installed manually with assistance.

[0081] The multifunctional comprehensive excavation trolley proposed in the present invention includes an adapted step method construction process:

[0082] (1) Without affecting the traffic of vehicles on the face, the arch frame is pre-assembled at the rear of the multifunctional comprehensive excavation trolley, and the arch frame is pre-assembled on the ground (the arch frame at the lower part of the side wall is reserved and not assembled). Figure 22 As shown;

[0083] (2) The assembled arch frame is lifted from the ground to a vertical state by the lifting mechanism 7 at the rear end of the trolley. Figure 23 As shown;

[0084] (3) After the arch frame is lifted to a certain height by the lifting mechanism 7, the arch frame is placed on the lifting mechanism 8 with manual assistance, and the lifting mechanism 8 is used to lift the arch frame to the highest position, such as Figure 24 As shown;

[0085] (4) After the arch frame is lifted to the highest position, the arch frame is moved from the lifting mechanism 8 to the transport trolley 6 by the transport trolley 6, as shown in FIG. Figure 25 As shown;

[0086] (5) The transport trolley 6 continues to lift the arch frame to a higher height and then transports it to the installation trolley 5 for temporary storage. Figure 26 As shown;

[0087] (6) Follow the same steps as above to complete the pre-assembly of the four arch frames. Figure 27 As shown;

[0088] (7) After the face of the tunnel meets the conditions for the installation of the arch frame, the trolley is moved as a whole to the lower step near the face of the tunnel, the movable bracket 4 is extended to the upper step, and after supporting the front legs 46, the arch frame is moved to the installation position by the installation trolley 5, and the position adjustment such as the arch frame jacking and swinging is performed. The arch frame at the bottom of the step is installed by manual cooperation, such as Figure 28 、 29 As shown;

[0089] (8) After the arch is completed, the anchor hole drilling operation is completed by the anchor drilling mechanism 9 at the front end of the platform. The rock drill bracket 93 can be moved forward and backward by the movable bracket 4, and can also be moved circumferentially around the arc track 91 by the traveling trolley 92 to complete the circumferential anchor drilling operation at different mileage positions in the tunnel;

[0090] (9) The drilling work of the tunnel face is mainly completed by manual drilling, such as Figure 32 As shown, workers stand on the upper step ground and the working platform of the mobile support to complete the drilling work on the front face of the tunnel;

[0091] The multifunctional comprehensive excavation trolley proposed in the present invention includes an adapted full-section construction process, which is similar to the step construction process, except that: (1) the movable bracket 4 does not need to be moved forward when the arch is installed, and the trolley moves forward as a whole to the face for assembly. Figure 30 、 Figure 31 (2) When drilling holes on the tunnel face, the mobile bracket 4 does not need to move forward, and workers stand on the working platform of the gantry and the mobile bracket to complete the drilling work on the tunnel face in front of the tunnel, as shown in FIG. Figure 33 (3) As mentioned above, the arch sections and installation sequence used are different.

Claims

1. A multifunctional comprehensive tunnel excavation trolley, comprising at least a frame adapted to the tunnel contour, and a traveling mechanism, a transverse lifting mechanism, an arch mounting mechanism, an anchor drilling mechanism, and auxiliary mechanisms mounted on the frame, characterized in that: The platform has a double-layer structure, including a gantry on the lower layer and a mobile support on the upper layer. The gantry is a door-shaped support structure, and the internal clearance of the gantry ensures the passage requirements of conventional vehicles. The bottom of the mobile support is connected to the top of the gantry via a load-bearing track. The top of the gantry is equipped with a first drive mechanism, which drives the mobile support to move relative to the gantry via a first chain and sprocket mechanism. The bottom of the front end of the mobile support is provided with a front support leg that can be extended and flipped. The transverse lifting mechanism is distributed at the four corners of the gantry and installed on the outside of the gantry. It includes a transverse mechanism located below and a telescopic column located above. The two are fixedly connected up and down, wherein the bottom of the transverse mechanism is supported on the ground, and the top of the telescopic column is fixedly connected to the end of the gantry. A transverse oil cylinder is provided in the transverse mechanism, and the trolley is positioned on the center line of the tunnel through the lateral adjustment of the transverse oil cylinder. A jacking oil cylinder is provided inside the telescopic column, and the trolley is adjusted to rise and fall by the up and down extension of the jacking oil cylinder. The arch frame installation mechanism includes a lifting mechanism, a hoisting mechanism, a transport trolley and an installation trolley, wherein the lifting mechanism is located at the rear end of the mobile bracket, and two groups are symmetrically arranged along the center line of the tunnel. The lifting mechanism is used to lift the arch frame from a horizontal state on the ground to a vertical state, and further lift it to the lifting mechanism; there are two groups of lifting mechanisms, which are symmetrically installed on the rear end of the door frame, and are used to lift the arch frame from a low position to a high position, and further transfer it to the transport trolley; there are two groups of transport trolleys, which are symmetrically distributed on the transport trolley tracks set on both sides of the mobile bracket. The transport trolleys move along the transport trolley tracks to lift the arch frame Transfer from the lifting mechanism to the installation trolley; the installation trolley is located on the installation trolley track provided on the upper part of the mobile support, and the installation trolley includes an installation trolley frame and a third drive mechanism fixedly connected to the installation trolley frame, an adjustment frame and a telescopic frame, and the third drive mechanism drives the installation trolley to move back and forth along the installation trolley track; the adjustment frame is located on the upper part of the installation trolley frame, and is used to adjust the position of the arch frame in the circumferential direction of the tunnel to ensure that the arch frame is centered; there are two groups of telescopic frames, which are symmetrically arranged on both sides of the installation trolley frame along the center line of the tunnel, and different arch frame installation spacings can be achieved by adjusting the telescopic frames; The transport trolley includes a transport trolley frame, a longitudinal conveying device, a longitudinal conveying rail, a jacking mechanism, a fifth driving mechanism and a fifth chain sprocket mechanism. The longitudinal conveying device is divided into two parts, the upper part is an arch frame fixing device, which fixes the arch frame by adjusting the length of the screw, and the lower part is a wheel set arranged on the longitudinal conveying rail, so that the longitudinal conveying device can move along the longitudinal conveying rail; the jacking mechanism is located below the longitudinal conveying rail, and the jacking mechanism is an inner and outer sleeve structure, including an inner sleeve, an outer sleeve and an oil cylinder connecting the inner sleeve and the outer sleeve, the upper part of the inner sleeve is connected to the lower part of the longitudinal conveying rail, and the lower part of the outer sleeve is connected to the transport trolley frame, and the jacking mechanism can realize relative movement of the inner and outer sleeves to adjust the height of the longitudinal conveying rail; the transport trolley frame is located on the transport trolley rail, and the fifth driving mechanism drives the transport trolley frame to move through the fifth chain sprocket mechanism, so that the entire transport trolley moves along the transport trolley rail arranged on the movable bracket; The anchor drilling mechanism is located at the front end of the trolley, mounted on a mobile support and moves synchronously with the mobile support. The anchor drilling mechanism includes a curved track, a trolley, a rock drill gun, a rock drill gun support, and a propulsion cylinder. The curved track is adapted to the tunnel cross-section. The trolley is mounted on the curved track and moves along the curved track. The rock drill gun support is movably connected to the trolley via a rotating shaft and rotates around the rotating shaft. The rock drill gun is mounted on the rock drill gun support. The propulsion cylinder is located at the rear of the rock drill gun support and is used to advance the rock drill gun. The auxiliary mechanism includes a working platform and a ladder installed on the platform.

2. The multifunctional tunnel excavation trolley according to claim 1, characterized in that: The door frame includes a bottom beam, a column and an upper cross beam. The bottom beams are provided with two left and right beams and are both arranged longitudinally. The columns are vertically fixed on the bottom beams. The upper cross beams are transversely connected and fixed between the tops of the two adjacent left and right columns and together form a door-shaped structure. A cross brace is provided between the front and rear adjacent upper cross beams to increase the stability of the door frame. A scissor brace is provided between the front and rear adjacent columns to increase the stability of the door frame. The movable bracket includes front legs, four groups of arched brackets and longitudinal beams. The four groups of arched brackets are arranged at intervals and are connected and fixed to each other by the longitudinal beams to form a whole. A running beam is arranged longitudinally at the bottom of the arched bracket. The running beam is located on the load-bearing track and moves along the load-bearing track. The left and right front legs are provided, and the two front legs are connected and fixed by a cross brace. The front legs are telescopic sleeve structures, and a telescopic cylinder is provided inside them. The top of the front legs is hingedly installed on the movable bracket, and a flipping cylinder that can flip the front legs back and forth is provided between the front legs and the movable bracket.

3. The multifunctional tunnel excavation trolley according to claim 2, characterized in that: The load-bearing rails are provided with two groups on the left and right sides, which are fixed on the upper crossbeam in the portal frame. The load-bearing rails are of a box-type structure, and five groups of tugwheels are provided inside the load-bearing rails. Flange plates are provided on the left and right sides of the upper edge of the load-bearing rails. Openings for the outer edges of the tugwheels to extend are provided at positions on the upper surface of the load-bearing rails corresponding to the tugwheels. The entire movable bracket is supported on the tugwheels through the running beams; two groups of anti-hanging wheels are provided at the bottom of the arched brackets, and each group of anti-hanging wheels is located on the left and right sides of the load-bearing rails, and the rims of the anti-hanging wheels are close to the lower surfaces of the flange plates in the load-bearing rails to prevent the movable bracket from deviating during movement on the load-bearing rails; The first driving mechanism and the first chain sprocket mechanism are installed on the upper beam in the door frame. There are two groups of first chain sprocket mechanisms. The first chain sprocket mechanisms are arranged along the longitudinal direction. The bottom of the movable bracket is fixedly connected to the chain through a connecting piece. The first driving mechanism is connected and driven by the two output shafts of the reducer to the active sprockets in the two groups of first chain sprocket mechanisms, thereby driving the movement of the chain and further driving the movable bracket to move.

4. The multifunctional tunnel excavation trolley according to claim 2, characterized in that: There are four groups of running mechanisms, which are distributed at the four corners of the portal frame and installed under the bottom beam. The running mechanism adopts press-fit tire running. Each group of running mechanisms includes two tires, a second driving mechanism and a second chain sprocket mechanism. The second driving mechanism is located in the middle of the two tires. The tires are driven to rotate through the second chain sprocket mechanism, driving the trolley to move forward or backward as a whole.

5. The multifunctional tunnel excavation trolley according to claim 2, characterized in that: There are four groups of the transverse lifting mechanism, which are distributed at the front and rear ends of the two bottom beams in the gantry; the transverse mechanism includes a base, an anti-hanging plate, a transverse cylinder seat and a transverse oil cylinder. The base is supported on the ground when working, and the transverse oil cylinder seat is placed on the top surface of the base. The transverse oil cylinder is installed horizontally and its two ends are respectively connected to the base and the transverse oil cylinder seat. Each base is provided with two anti-hanging plates. The lower part of the anti-hanging plate is connected to the base by bolts, and the upper part presses the transverse oil cylinder seat on the top surface of the base to ensure that the transverse oil cylinder pushes the transverse oil cylinder seat to move on the base without deviation; The telescopic column includes a telescopic inner sleeve, a telescopic outer sleeve, and a jacking cylinder. The lower part of the telescopic inner sleeve is connected to the top surface of the transverse cylinder seat by bolts to ensure that when the transverse cylinder pushes the transverse cylinder seat to move, the telescopic column can move accordingly; the main bodies of the telescopic outer sleeve and the telescopic inner sleeve of the telescopic column are both square tube structures, the jacking cylinder is installed in the square tube of the telescopic inner sleeve, and the telescopic inner sleeve is installed in the telescopic outer sleeve; the two ends of the jacking cylinder are respectively connected to the telescopic inner sleeve and the telescopic outer sleeve, and the relative sliding between the telescopic outer sleeve and the telescopic inner sleeve is achieved through the jacking cylinder; a flange connected to the end of the bottom beam is provided on the outside of the telescopic outer sleeve to enable the gantry to move with the telescopic sleeve.

6. The multifunctional tunnel excavation trolley according to claim 1, characterized in that: The lifting mechanism includes a winch, a telescopic sleeve, a pulley block and a hook. The pulley blocks are installed on both ends of the telescopic sleeve. The telescopic sleeve structure can adjust the distance between the pulley blocks to adapt to different working requirements. The lifting mechanism includes a guide frame, a lifting trolley, a fourth driving mechanism and a fourth chain sprocket mechanism. The guide frame structure is a double-groove steel inverted buckle, and the middle gap of the double-groove steel ensures that the chain of the fourth chain sprocket mechanism can pass freely; the upper and lower ends of the lifting trolley are respectively connected to the chain, and the fourth chain sprocket mechanism is driven by the fourth driving mechanism to realize the lifting trolley to move up and down along the guide frame, lifting the arch frame from a low position to a high position; the running track of the lifting trolley is the double-groove steel structure of the guide frame, and a single lifting trolley has four running wheels symmetrically installed on the outside of the double-groove steel, and four guide wheels are installed in the middle gap of the double-groove steel structure to prevent the lifting trolley from running off.

7. The multifunctional tunnel excavation trolley according to claim 1, characterized in that: Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The telescopic frame in the installation trolley includes a telescopic longitudinal beam, a telescopic jacking device and an arch frame fixing device. A plurality of flanges are evenly distributed on the top edge of the telescopic longitudinal beam. The arch frame fixing device is installed on the telescopic longitudinal beam through the flange. Different arch frame installation spacings can be achieved by changing the installation position of the arch frame fixing device on different flanges of the telescopic longitudinal beam; the telescopic jacking device is provided with two groups, which are inner and outer sleeve structures, including an inner sleeve, an outer sleeve and an oil cylinder connecting the inner sleeve and the outer sleeve, which can realize relative movement of the inner and outer sleeves, the outer sleeve is connected to the installation trolley frame, and the inner sleeve is connected to the bottom edge of the telescopic longitudinal beam.

8. The multifunctional tunnel excavation trolley according to claim 1, characterized in that: The anchor drilling mechanism includes three groups of traveling trolleys, rock drill guns, rock drill gun brackets and propulsion cylinders, which are distributed on the top and both sides of the curved track. The main body of the rock drill gun bracket is a double-slot steel inverted buckle, and the rock drill gun is installed in the gap between the double-slot steels. The traveling trolley includes a reducer, a trolley frame, a traveling wheel and a sixth chain sprocket mechanism. The reducer drives the traveling wheel through the sixth chain sprocket mechanism to realize the movement of the traveling trolley along the curved track.

9. The multifunctional tunnel excavation trolley according to claim 1, characterized in that: A telescopic platform is provided below the working platform provided at the side of the platform. The telescopic platform is supported and connected to the working platform and can be extended from below the working platform by being pushed by the platform oil cylinder.

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