A construction technology of a tunnel lining segment assembly trolley

Abstract

The present invention provides a construction process of a tunnel lining piece assembly trolley. The assembly of each ring of tunnel lining pieces includes the assembly of one arch lining piece and two side lining pieces. After the assembly trolley is in position in the tunnel, the two side lining pieces are assembled by the circumferential assembly mechanism of the assembly trolley, and then the arch lining piece is assembled by the longitudinal transportation mechanism. After the assembly is completed, the assembly trolley moves backward to assemble the next ring of tunnel lining pieces, and the cycle is repeated in sequence. In this construction process, the assembled lining is assembled in blocks, and the assembly efficiency and precision are high.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel lining installation, and in particular to a construction process of a tunnel lining piece assembly trolley. Background Art

[0002] In the past two decades, my country's transportation infrastructure has achieved unprecedented development, among which mountain tunnels have experienced progress from traditional support structures to modern support structures, and from integral lining to composite lining. The construction method of mountain tunnels has also developed from traditional mining methods to the New Austrian Tunneling Method and TBM construction methods. At present, the New Austrian Tunneling Method composite lining has been widely used all over the world. However, the New Austrian Tunneling Method has many construction processes, complex construction organization, long construction period, harsh construction environment, and construction quality cannot be effectively guaranteed, but it has good geological adaptability and has unique advantages of economy and flexibility. The TBM method has simple procedures, fast construction speed and good safety, but the TBM method is generally only used for long circular tunnels dominated by hard rocks, and is not suitable for short tunnels and underground projects with complex geological conditions. In order to adapt to various geological conditions, speed up construction speed and improve project quality, it is necessary to make some improvements to the current popular construction methods or lining structure forms in order to obtain good economic and technical benefits.

[0003] From the perspective of excavation methods, the drilling and blasting excavation method used by the New Austrian Tunneling Method has strong adaptability and can be applied to various geological conditions. On the basis of meeting the tunnel construction limit, it can excavate various shapes of sections and has strong adaptability; while the TBM method has strict requirements on geological conditions, section shape and tunnel length, which reduces its scope of application and has low adaptability. Compared with the New Austrian Tunneling Method, it lacks advantages. In addition, from the perspective of lining structure, the composite lining structure used by the New Austrian Tunneling Method fully reflects its design and construction concept, that is, giving full play to the self-bearing capacity of the surrounding rock, but its construction speed is slow and the construction process is numerous. It can no longer meet the requirements of modern tunnel construction for mechanization, construction efficiency, safety and environmental protection, and the secondary lining cannot be immediately loaded after pouring; the prefabricated lining used by the TBM method has a fast lining construction speed, reliable quality, and the lining can be loaded immediately. The tunnel construction environment has been greatly improved, and the various joints in the prefabricated lining increase the flexibility of the lining, which to a certain extent also reflects the concept of the New Austrian Tunneling Method. At the same time, with the development of mechanization and factory construction technology in tunnel construction, prefabricated linings are increasingly widely used in various tunnels and underground projects. Prefabricated tunnel linings have many advantages: (1) Once assembled, they can withstand the surrounding rock pressure without curing time; (2) A large number of components can be mass-produced in factories and assembled mechanized, thereby improving working conditions and saving labor; (3) During assembly, temporary support such as arches and formwork is not required, thus saving a lot of supporting materials and labor; (4) The assembly speed is increased due to the use of mechanization, which shortens the construction period and may also reduce the cost; (5) Prefabricated linings have strong adaptability and can be used in some special environments such as high-altitude cold.

[0004] In order to facilitate the installation of prefabricated tunnel linings, a ring of tunnel lining sheets can be divided into multiple pieces for separate assembly. The assembly of a ring of tunnel lining sheets often includes the assembly of one arch lining sheet and two side lining sheets. Therefore, it is necessary to provide a trolley that can install the arch lining sheets and the side lining sheets to solve the problems of speed, quality and efficiency in current engineering construction. Summary of the invention

[0005] The invention provides a construction process for a tunnel lining piece assembly trolley, in which the assembled lining is assembled in blocks, and the assembly efficiency and precision are high.

[0006] The technical solution adopted to achieve the above-mentioned purpose of the present invention is:

[0007] A construction process for a tunnel lining segment assembly trolley, wherein the assembly of each ring of tunnel lining segments includes the assembly of one arch lining segment and two side lining segments. After the assembly trolley is positioned in the tunnel, the two side lining segments are assembled first, and then the arch lining segment is assembled. The specific steps are as follows:

[0008] S1. Carry and hoist one side lining sheet onto the lifting mechanism of the assembly trolley;

[0009] S2, the lifting mechanism lifts the side lining piece, and at the same time, the load-bearing slide block of the longitudinal transport mechanism of the assembly trolley moves to the position directly below the lifting mechanism;

[0010] S3, the lifting mechanism descends to place the side lining sheet on the load-bearing slider;

[0011] S4, the side lining piece moves and rises synchronously with the load-bearing slider, so that the side lining piece is located directly above the annular assembly mechanism of the assembly trolley;

[0012] S5, lifting the lining sheet suction cup of the annular assembly mechanism to connect the lining sheet suction cup with the side lining sheet;

[0013] S6, the longitudinal transport mechanism moves to the rear of the frame close to the jacking mechanism and descends, and at the same time the circumferential assembly mechanism drives the side lining piece to move to the side assembly position;

[0014] S7, lift, longitudinally move and adjust the lining sheet suction cup to accurately position the side lining sheet, complete the assembly of one side lining sheet, and return the circumferential assembly mechanism to the top position;

[0015] S8, completing the assembly of another side lining sheet according to the above steps S1 to S7;

[0016] S9, placing the arch lining sheet on the longitudinal transport mechanism according to the above steps S1 to S3, the arch lining sheet is synchronously moved and lifted with the load-bearing slider, so that the arch lining sheet is moved to the arch assembly position and is in place, completing the assembly of the lining sheet of the first ring tunnel;

[0017] S10, the longitudinal transport mechanism descends and moves to the rear of the frame close to the jacking mechanism, and the assembly trolley moves backward to assemble the next ring of tunnel lining pieces, and the cycle continues.

[0018] After the side lining pieces are precisely positioned in step S7, the pressing mechanism of the assembly trolley lifts up from the rear side to press the side lining pieces.

[0019] After the assembly of the 6-ring tunnel lining segments is completed, grouting and backfilling are carried out.

[0020] The side lining pieces and arch lining pieces are transported into the tunnel by transport vehicles and lifted onto the assembly trolley by lifting portal cranes.

[0021] The specific steps of moving the load-bearing slide block of the longitudinal transport mechanism to the position directly below the jacking mechanism in step S2 are:

[0022] S21, the longitudinal moving chassis of the longitudinal moving transport mechanism moves to the rear of the frame close to the jacking mechanism, and the second longitudinal moving track of the longitudinal moving transport mechanism is located above the supporting cylinder at the rear end of the frame;

[0023] S22, the supporting oil cylinder is raised to contact with the second longitudinal moving track to support the second longitudinal moving track;

[0024] S23, then move the load-bearing sliding block to just below the jacking mechanism.

[0025] The specific steps in step S4 are:

[0026] S41, the side lining piece moves to the top of the longitudinal moving chassis along with the load-bearing slider, and the supporting cylinder descends;

[0027] S42, the longitudinal movement chassis drives the load-bearing slider and the side lining sheet to move to the front of the frame near the circumferential assembly mechanism, and the second longitudinal movement track of the longitudinal movement transport mechanism is located above the supporting cylinder at the front end of the frame, and the supporting cylinder and the longitudinal movement transport mechanism both lift the second longitudinal movement track, support the second longitudinal movement track and make the second longitudinal movement track located above the circumferential assembly mechanism;

[0028] S43, the side lining piece moves along with the load-bearing slider on the second longitudinal track to just above the lining piece suction cup of the annular assembly mechanism.

[0029] The specific steps in step S9 are:

[0030] S91, the arch lining piece moves to the top of the longitudinal moving chassis along with the load-bearing slider, and the supporting cylinder descends;

[0031] S92, the longitudinal moving chassis drives the load-bearing sliding block and the arch lining sheet to move to the front of the frame near the circumferential assembly mechanism, and the second longitudinal moving track of the longitudinal moving transport mechanism is located above the supporting cylinder at the front end of the frame, and the supporting cylinder and the longitudinal moving transport mechanism both lift the second longitudinal moving track to support the second longitudinal moving track;

[0032] S93, the arch lining piece moves to the arch assembly position along with the load-bearing slider on the second longitudinal track, and the longitudinal transportation mechanism performs longitudinal and lifting adjustments on the arch lining piece to put the arch lining piece in place accurately, thereby completing the assembly of the arch lining piece.

[0033] The longitudinal transport mechanism is also provided with a transverse frame and a third transverse cylinder for transverse adjustment. When the side lining sheet or the arch lining sheet is placed from the jacking mechanism onto the longitudinal transport mechanism, when it is placed from the longitudinal transport mechanism onto the arch jacking mechanism, and when the longitudinal transport mechanism directly installs the arch lining sheet, the longitudinal transport mechanism performs adjustments in the transverse, longitudinal and vertical directions.

[0034] When the assembly steps S4 to S6 of one lining sheet are being performed, the assembly steps S1 to S3 of another lining sheet are being performed simultaneously.

[0035] The transport vehicle carries two side lining sheets and / or one arch lining sheet at a time.

[0036] Compared with the prior art, the construction process of the assembly trolley provided by the present invention has the following advantages: 1. In the construction method provided by the present invention, the lining sheets are transported by the jacking mechanism and the longitudinal transport mechanism of the assembly trolley. At the same time, the longitudinal transport mechanism also assembles the arch lining sheets, and the side lining sheets on both sides are assembled by the annular assembly mechanism and the clamping mechanism, thereby realizing the block-type assembly of the tunnel lining.

[0037] 2. In the construction process provided by the present invention, the tunnel lining sheets of each ring are divided into two side lining sheets and one arch lining sheet for assembly. While the previous lining sheet is being assembled, the next lining sheet can be transported, which saves installation time and has high installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The structure diagram of the tunnel lining segment assembly trolley provided by the present invention is as follows Figure 1 ;

[0039] Figure 2 The structure diagram of the tunnel lining segment assembly trolley provided by the present invention is as follows Figure 2 ;

[0040] Figure 3 It is a structural schematic diagram of the frame of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the annular assembly mechanism in the present invention;

[0042] Figure 5 It is a partial schematic diagram of the circumferential assembly mechanism of the present invention being installed on the vehicle frame;

[0043] Figure 6 It is a structural schematic diagram of the circumferential trolley of the circumferential assembly mechanism in the present invention;

[0044] Figure 7 It is a schematic diagram of the connection between the circumferential trolley and the circumferential track of the circumferential assembly mechanism of the present invention;

[0045] Figure 8 It is a structural schematic diagram of the longitudinal shift frame of the annular assembly mechanism in the present invention;

[0046] Fig. 9 It is a schematic diagram of the connection between the mounting base and the longitudinal moving frame of the annular assembly mechanism in the present invention;

[0047] Fig.10It is a schematic diagram of the connection between the mounting base of the annular assembly mechanism and the lining sheet suction cup in the present invention;

[0048] Fig.11 It is a schematic diagram of the installation of the jacking mechanism on the vehicle frame in the present invention;

[0049] Fig.12 It is a structural schematic diagram of the longitudinal transport mechanism in the present invention;

[0050] Fig.13 It is a structural schematic diagram of the longitudinal moving chassis of the longitudinal moving transport mechanism in the present invention;

[0051] Fig.14 It is a structural schematic diagram of the transverse moving frame of the longitudinal moving transport mechanism in the present invention;

[0052] Fig.15 It is a connection structure diagram of the track connecting beam of the longitudinal transport mechanism and the second longitudinal track in the present invention;

[0053] Fig.16 It is a schematic diagram of the installation of the pressing mechanism in the present invention;

[0054] Fig.17 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 1 ;

[0055] Fig.18 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 2 ;

[0056] Fig.19 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 3 ;

[0057] Fig. 20 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 4 ;

[0058] Fig.21 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 5 ;

[0059] Fig. 22 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 6 ;

[0060] Fig.23 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 7 ;

[0061] Fig.24 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 8 ;

[0062] Fig.25 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 9 ;

[0063] Fig.26 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 10 ;

[0064] Fig. 27 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 10 one;

[0065] Fig.28 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 10 two;

[0066] Fig.29 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 10 three;

[0067] Fig.30 A schematic diagram of the construction of the assembly trolley provided by the present invention Figure 10 Four;

[0068] In the figure: 100-arch lining sheet, 200-side lining sheet;

[0069] 1-frame, 2-travel mechanism, 21-travel track;

[0070] 3-annular assembly mechanism, 31-annular track, 311-arc rail, 312-arc groove, 32-annular trolley, 321-traveling wheel group, 322-back pressure wheel group, 323-guide wheel group, 324-first guide hole, 325-first cylinder mounting hole, 33-longitudinal movement frame, 331-first guide column, 332-guide rail, 34-mounting base, 341-guide rail mounting hole, 35-lining sheet suction cup, 36-first lifting cylinder, 37-first longitudinal movement cylinder, 38-multi-degree-of-freedom adjustment unit, 381-first lifting adjustment cylinder, 382-second lifting adjustment cylinder, 383-first longitudinal adjustment cylinder;

[0071] 4-lifting mechanism, 41-second lifting cylinder, 42-load-bearing frame, 421-second guide column, 43-connecting beam, 431-second guide hole, 44-load-bearing beam;

[0072] 5-longitudinal transport mechanism, 51-first longitudinal track, 52-longitudinal chassis, 521-wheel set, 522-second cylinder mounting hole, 53-transverse frame, 531-third guide hole, 532-third cylinder mounting hole, 54-track connecting beam, 541-third guide column, 55-second longitudinal track, 56-load-bearing slider, 57-third transverse oil cylinder, 58-third lifting oil cylinder;

[0073] 6-pressing mechanism, 61-pressing frame, 62-longitudinal pressing cylinder;

[0074] 7-support cylinder, 8-transport vehicle, 9-lifting door crane. DETAILED DESCRIPTION

[0075] The present invention will be described in detail below with reference to the accompanying drawings.

[0076] In this embodiment, the assembly trolley divides each ring of lining pieces into two side lining pieces 200 and one arch top lining piece 100 for assembly.

[0077] The overall structural diagram of the construction process of the tunnel lining segment assembly trolley is as follows Figure 1 and Figure 2 As shown, it includes a frame 1, a traveling mechanism 2 connected to the bottom of the frame, a circumferential assembling mechanism 3 installed on the frame, a longitudinal transport mechanism 5, a lifting mechanism 4, a clamping mechanism 6 and an electric hydraulic unit (not shown in the figure).

[0078] The frame is a door-shaped frame structure, including columns, cross beams and longitudinal beams. The frame is the main force-bearing component of the whole machine, wherein the circumferential track 31 of the circumferential assembly mechanism, the connecting beam 43 of the jacking mechanism, the first longitudinal track 51 of the longitudinal transport mechanism and the clamping frame 61 of the clamping mechanism are all fixed on the frame. Figure 3 shown.

[0079] The traveling mechanism is a wheel-rail traveling structure, including two sets of active traveling wheels and two sets of driven traveling wheels installed at the bottom of the frame and a traveling track 21 installed on the ground in the tunnel, see Figure 1 and Figure 2 .

[0080] The circumferential assembly mechanism includes a circumferential track 31, a circumferential trolley 32, a longitudinal moving frame 33, a mounting base 34 and a lining sheet suction cup 35. Figure 4 The annular track is fixedly connected to the front end of the frame in the transverse direction, and the annular trolley is installed on the annular track and moves along the annular track, as shown in FIG. Figure 2 and Figure 5 As shown, in this embodiment, the circumferential trolley is driven by a sprocket (not shown) to run along the circumferential track. The sprocket drive is relatively common and will not be described in detail here. The circumferential track is composed of two arc-shaped track beams. The top of the track beam is provided with an arc-shaped rail 311, and the side of the track beam is provided with a concave arc-shaped groove 312. The bottom of the circumferential trolley is connected to a running wheel group 321, a back pressure wheel group 322 and a guide wheel group 323. The running wheel group, the back pressure wheel group and the guide wheel group are all provided with four groups, such as Figure 6 As shown, the running wheel set straddles the arc rail of the track beam, and the pressure wheel set is buckled in the arc groove of the track beam, so that the guide wheel set contacts the side of the track beam, as shown in FIG. Figure 7 shown.

[0081] The longitudinal moving frame is connected to the upper part of the circular trolley through the first lifting cylinder 36. Specifically, the circular trolley is provided with a first guide hole 324 and a first cylinder body mounting hole 325. Figure 6 The bottom of the longitudinal frame is connected to a first guide column 331. Figure 8 As shown, the first guide column is installed in the first guide hole, the cylinder body of the first lifting cylinder is fixed on the first cylinder body mounting hole, and the piston rod of the first lifting cylinder is fixedly connected to the longitudinal moving frame. Figure 4 The first lifting cylinder is extended and retracted to drive the longitudinal moving frame to move in the vertical direction, and at the same time drives the mounting base and the lining sheet suction cup above the longitudinal moving frame to move in the vertical direction, and the movement is limited by the first guide hole. The mounting base is connected to the upper part of the longitudinal moving frame through the first longitudinal moving cylinder 37. Specifically, the longitudinal moving frame is connected with a guide rail 332 along the longitudinal direction, and the mounting base is provided with a guide rail mounting hole 341. The guide rails are connected to the guide rail mounting holes. The cylinder body of the first longitudinal moving cylinder is fixed on the longitudinal moving frame, and the piston rod of the first longitudinal moving cylinder is fixedly connected to the mounting base. Fig. 9 As shown, the first longitudinal movement oil cylinder is extended and retracted to drive the installation base to move longitudinally, and at the same time drives the lining sheet suction cup above the installation base to move longitudinally.

[0082] The lining sheet suction cup is connected to the top of the mounting base through a multi-degree-of-freedom adjustment unit 38. Specifically, the multi-degree-of-freedom adjustment unit includes a first jacking adjustment cylinder 381, a second jacking adjustment cylinder 382 and a first longitudinal adjustment cylinder 383. The first jacking adjustment cylinder, the second jacking adjustment cylinder and the first longitudinal adjustment cylinder are distributed and connected between the mounting base and the lining sheet suction cup. Fig.10 As shown, the rotation, up and down, left and right and other multi-degree-of-freedom adjustments of the lining sheet suction cup are controlled by the telescopic adjustment of the first jacking adjustment cylinder, the second jacking adjustment cylinder and the first longitudinal adjustment cylinder, so as to fine-tune the position of the lining sheet placed thereon, and realize the precise assembly of the lining sheet in place. The structure of the lining sheet suction cup matches the structure of the lining sheet. Specifically, the lining sheet suction cup is a vacuum suction cup used to fix the lining sheet.

[0083] The lifting mechanism includes a second lifting cylinder 41 and a load-bearing frame 42. The load-bearing frame is installed at the rear end of the frame through the second lifting cylinder. Specifically, a connecting beam 43 is fixed to the rear end of the frame. A second guide hole 431 is provided on the connecting beam. A second guide column 421 is connected to the bottom of the load-bearing frame. The second guide column is installed in the second guide hole. The cylinder body of the second lifting cylinder is fixedly connected to the connecting beam, and the piston rod of the second lifting cylinder is fixedly connected to the load-bearing frame. Fig.11 As shown, the second lifting cylinder is extended and retracted to drive the load-bearing frame to move in the vertical direction. In this embodiment, two wedge-shaped load-bearing beams 44 are symmetrically arranged on the load-bearing frame to ensure that when the lining sheet is placed on the load-bearing beams, the lining sheet fits the load-bearing beams, thereby ensuring the stability of the lifting mechanism when transporting the lining sheet.

[0084] The longitudinal transport mechanism includes a first longitudinal rail 51, a longitudinal chassis 52, a transverse frame 53, a rail connecting beam 54, a second longitudinal rail 55 and a load-bearing slider 56. Fig.12 The first longitudinal track is fixedly connected to the frame between the circumferential assembly mechanism and the lifting mechanism, and the longitudinal chassis is installed on the first longitudinal track and moves longitudinally along the first longitudinal track. Figure 1 Specifically, two first longitudinal tracks are provided, and a wheel set 521 is provided at the bottom of the longitudinal chassis. Fig.13 As shown, the wheel set of the longitudinal moving chassis straddles the first longitudinal moving track and is driven by the sprocket. The transverse moving frame is connected to the upper part of the longitudinal moving chassis through the third transverse moving oil cylinder 57. Specifically, the longitudinal moving chassis is provided with a second cylinder body mounting hole 522. Fig.13 The cylinder body of the third transverse shift oil cylinder is fixed in the mounting hole of the second cylinder body, the piston rod of the third transverse shift oil cylinder is fixedly connected to the transverse shift frame, and the third transverse shift oil cylinder is extended and retracted to drive the transverse shift frame to move transversely.

[0085] In this embodiment, two second longitudinal tracks are also symmetrically arranged and connected as a whole through a track connecting beam. The track connecting beam is connected to the upper part of the transverse frame through a third jacking cylinder 58, so that the second longitudinal track is connected to the upper part of the transverse frame. Specifically, a third guide hole 531 and a third cylinder mounting hole 532 are arranged on the transverse frame. Fig.14 The bottom of the track connecting beam is connected to a third guide column 541, as shown in FIG. Fig.15 As shown, the third guide column is installed in the third guide hole, the cylinder body of the third lifting oil cylinder is fixed in the third cylinder body installation hole, the piston rod of the third lifting oil cylinder is fixedly connected to the track connecting beam, and the third lifting oil cylinder is extended and retracted to drive the track connecting beam and the second longitudinal track to move in the vertical direction as a whole. The load-bearing slider is installed on the second longitudinal track and moves along the second longitudinal track. Specifically, the load-bearing slider is driven by a gear rack. Two load-bearing sliders are correspondingly arranged. The load-bearing sliders are wedge-shaped. When carrying the lining sheet, the lining sheet fits the load-bearing slider to ensure the stable transportation of the lining sheet during transportation.

[0086] The clamping mechanism is symmetrically installed on the frame on both sides close to the annular assembly mechanism. Figure 2 and press the newly installed side lining pieces on both sides of the ring assembly mechanism from the rear, see Fig.16 and Fig.26The clamping mechanism includes a clamping frame 61 and a longitudinal clamping cylinder 62. There are more than two longitudinal clamping cylinders distributed along an arc on the clamping frame, and the arc shape matches the shape of the lining sheet. In this embodiment, there are three longitudinal clamping cylinders distributed on each side of the clamping frame. One end of the longitudinal clamping cylinder is fixedly connected to the clamping frame. In order to facilitate the installation of the longitudinal clamping cylinder, the outer side of the clamping frame is an arc shape that matches the shape of the lining sheet. The clamping frame is fixedly connected to the frame so that the direction of the longitudinal clamping cylinder is along the tunnel direction, and the distance between the front end of the longitudinal clamping cylinder and the rear side of the newly installed side lining sheet is smaller than the extension range of the longitudinal clamping cylinder, so as to ensure that the longitudinal clamping cylinder can extend and clamp the side lining sheet installed by the annular assembly mechanism, such as Fig.16 As shown. And the distance between the center points of the longitudinal clamping oil cylinders on both sides on the same horizontal line matches the distance between the center points of the lining sheets on both sides of the tunnel on the horizontal line, ensuring that the longitudinal clamping oil cylinder can be placed at the center of the rear side of the side lining sheet, ensuring that the side lining sheet will not deviate when it is clamped later.

[0087] The front and rear ends of the frame are both vertically fixed with support cylinders 7. Figure 1 and Figure 2 When the second longitudinal track moves to the front or rear end of the frame with the longitudinal frame, the support cylinder is supported between the second longitudinal track and the frame, so that when the load-bearing slider moves to the rear or front end of the second longitudinal track to carry the lining, the second longitudinal track can be supported between the support cylinder and the longitudinal frame. Fig.19 and Fig.21 shown.

[0088] When the tunnel lining piece assembly trolley provided in this embodiment is used for tunnel lining installation, each ring of tunnel lining pieces is assembled into three pieces, including one arch lining piece 100 and two side lining pieces 200. After the assembly trolley is in position in the tunnel, the two side lining pieces are assembled first, and then the arch lining piece is assembled. The specific steps are:

[0089] S1. Carry and hoist a side lining sheet onto the lifting mechanism of the assembly trolley. Fig.17 As shown, specifically, on the two load-bearing beams of the jacking mechanism;

[0090] The side lining sheets and the arch lining sheets are both carried into the tunnel by the transport vehicle 8 and are hoisted onto the assembly trolley by the lifting gantry crane 9. After the lifting gantry crane completes the lifting, it retreats to the transport vehicle to prepare for the next lifting. When the transport vehicle carries the lining sheets, three lining sheets of one ring can be transported into the tunnel at one time, saving transportation time and manpower. The side lining sheets and the arch lining sheets can also be carried separately. In this embodiment, two side lining sheets or one arch lining sheet are carried at one time.

[0091] S2, the lifting mechanism lifts the side lining sheet, such as Fig.18 As shown, specifically, the second lifting cylinder lifts the load-bearing frame and the load-bearing beam, thereby lifting the side lining sheet;

[0092] At the same time, the load-bearing slide block of the longitudinal transport mechanism of the assembly trolley is moved to the position directly below the jacking mechanism. The specific steps are as follows:

[0093] S21, the longitudinal moving chassis of the longitudinal moving transport mechanism moves to the rear of the frame close to the jacking mechanism, and the second longitudinal moving track of the longitudinal moving transport mechanism is located above the supporting cylinder at the rear end of the frame;

[0094] S22, the supporting oil cylinder is raised to contact with the second longitudinal track to support the second longitudinal track; this ensures that when the load-bearing sliding block moves to the rear end of the second longitudinal track to carry the lining sheet, the second longitudinal track is supported between the supporting oil cylinder and the longitudinal frame.

[0095] S23, then move the load-bearing sliding block to just below the jacking mechanism.

[0096] S3, the lifting mechanism is lowered to place the side lining sheet on the load-bearing slider of the longitudinal transport mechanism, such as Fig.19 shown.

[0097] S4. The side lining piece moves and rises synchronously with the load-bearing slider, so that the side lining piece is located directly above the annular assembly mechanism of the assembly trolley. The specific steps are as follows:

[0098] S41, the side lining piece moves to the top of the longitudinal moving frame along with the load-bearing slider, such as Fig. 20 As shown, the supporting cylinder is lowered;

[0099] If the longitudinal moving chassis is moved directly, once the second longitudinal moving track leaves the support of the supporting cylinder, the weight of the side lining sheet will cause uneven force on the second longitudinal moving track, resulting in construction accidents.

[0100] S42, the longitudinally moving chassis drives the load-bearing slider and the side lining sheet to move to the front of the frame near the annular assembly mechanism, and the second longitudinally moving track of the longitudinally moving transport mechanism is located above the supporting cylinder at the front end of the frame, and the supporting cylinder and the longitudinally moving transport mechanism both lift the second longitudinally moving track, support the second longitudinally moving track and make the second longitudinally moving track located above the annular assembly mechanism, such as Fig.21 As shown;

[0101] S43, the side lining piece moves along with the load-bearing slider on the second longitudinal track to the top of the lining piece suction cup of the annular assembly mechanism, such as Fig. 22 shown.

[0102] S5, lifting the lining sheet suction cup of the annular assembly mechanism to connect the lining sheet suction cup with the side lining sheet;

[0103] S6, the longitudinal transport mechanism moves to the rear of the frame near the jacking mechanism and descends. Fig.23 As shown, at the same time, the annular assembly mechanism drives the side lining piece to move to the side assembly position, as shown in FIG. Fig.24 As shown;

[0104] S7, lift, longitudinally move and adjust the lining sheet suction cup to make the side lining sheet accurately in place, such as Fig.25 As shown, the pressing mechanism of the assembly trolley lifts up and presses the side lining sheet from the rear side to facilitate the assembly of the side lining sheet with the installed side lining sheet, and the assembly of one side lining sheet is completed, and the circumferential assembly mechanism returns to the top position;

[0105] S8, complete the assembly of another side lining piece according to the above steps S1 to S7, such as Fig.26 Specifically, in order to save assembly time, when performing the assembly steps S4 to S6 of one lining sheet, the steps S1 to S3 of another lining sheet are performed simultaneously, such as Fig. 20 , Figure 22 to Figure 24 shown.

[0106] S9, placing the arch lining sheet on the longitudinal transport mechanism according to the above steps S1 to S3. Similarly, this step can be performed simultaneously with the assembly steps S4 to S6 of the second lining sheet. Fig.26 .

[0107] The arch lining piece moves and rises synchronously with the load-bearing slider, so that the arch lining piece moves to the arch assembly position and is in place, completing the assembly of the lining piece of the 1-ring tunnel. Specifically:

[0108] S91, the arch lining piece moves to the top of the longitudinal moving chassis along with the load-bearing slider, and the supporting cylinder descends;

[0109] S92, the longitudinally moving chassis drives the load-bearing slider and the arch lining sheet to move to the front of the frame near the annular assembly mechanism, and the second longitudinally moving track of the longitudinally moving transport mechanism is located above the supporting cylinder at the front end of the frame, such as Fig. 27 As shown, the supporting oil cylinder and the longitudinal transport mechanism both lift up the second longitudinal track to support the second longitudinal track. Fig.28 As shown;

[0110] S93, the arch lining piece moves to the arch assembly position along with the load-bearing slider on the second longitudinal track, and the longitudinal transport mechanism performs longitudinal and jacking adjustments on the arch lining piece to make the arch lining piece accurately positioned, completing the assembly of the arch lining piece. Fig.29 shown.

[0111] When the side lining sheet or the arch lining sheet is placed from the lifting mechanism onto the longitudinal transport mechanism, or from the longitudinal transport mechanism onto the arch lifting mechanism, or the arch lining sheet is directly installed on the longitudinal transport mechanism, the longitudinal transport mechanism can not only perform adjustments in the longitudinal and vertical directions (lifting and lowering), but also perform lateral adjustments through the transverse frame and the third transverse cylinder.

[0112] S10, the longitudinal transport mechanism descends and moves to the rear of the frame near the jacking mechanism, and the assembly trolley moves backward to assemble the next ring of tunnel lining pieces. Fig.30 After the assembly of the 6-ring tunnel lining segments is completed, grouting and backfilling are performed once.

Claims

1. A construction process for a tunnel lining segment assembly trolley, characterized in that: The assembly of each ring of tunnel lining segments includes the assembly of one arch lining segment and two side lining segments. After the assembly trolley is in position in the tunnel, the two side lining segments are assembled first, and then the arch lining segments are assembled. The specific steps are as follows: S1. Carry and hoist one side lining sheet onto the lifting mechanism of the assembly trolley; S2, the lifting mechanism lifts the side lining piece, and at the same time, the load-bearing slide block of the longitudinal transport mechanism of the assembly trolley moves to the position directly below the lifting mechanism; S3, the lifting mechanism descends to place the side lining sheet on the load-bearing slider; S4, the side lining piece moves and rises synchronously with the load-bearing slider, so that the side lining piece is located directly above the annular assembly mechanism of the assembly trolley; S5, lifting the lining sheet suction cup of the annular assembly mechanism to connect the lining sheet suction cup with the side lining sheet; S6, the longitudinal transport mechanism moves to the rear of the frame close to the jacking mechanism and descends, and at the same time the circumferential assembly mechanism drives the side lining piece to move to the side assembly position; S7, lift, longitudinally move and adjust the lining sheet suction cup to accurately position the side lining sheet, complete the assembly of one side lining sheet, and return the circumferential assembly mechanism to the top position; S8, completing the assembly of another side lining piece according to the above steps S1 to S7; S9, according to the above steps S1 to S3, the arch lining piece is placed on the longitudinal transport mechanism, and the arch lining piece is synchronously moved and lifted with the load-bearing slider, so that the arch lining piece is moved to the arch assembly position and in place, and the assembly of the lining piece of the first ring tunnel is completed; S10, the longitudinal transport mechanism descends and moves to the rear of the frame close to the jacking mechanism, and the assembly trolley moves backward to assemble the next ring of tunnel lining pieces, and the cycle continues.

2. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: After the side lining pieces are precisely positioned in step S7, the pressing mechanism of the assembly trolley lifts up from the rear side to press the side lining pieces.

3. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: After the assembly of the 6-ring tunnel lining segments is completed, grouting and backfilling are carried out.

4. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: The side lining pieces and arch lining pieces are transported into the tunnel by transport vehicles and lifted onto the assembly trolley by lifting portal cranes.

5. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: The specific steps of moving the load-bearing slide block of the longitudinal transport mechanism to the position directly below the jacking mechanism in step S2 are: S21, the longitudinal moving chassis of the longitudinal moving transport mechanism moves to the rear of the frame close to the jacking mechanism, and the second longitudinal moving track of the longitudinal moving transport mechanism is located above the supporting cylinder at the rear end of the frame; S22, the supporting oil cylinder is raised to contact with the second longitudinal moving track to support the second longitudinal moving track; S23, then move the load-bearing sliding block to just below the jacking mechanism.

6. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: The specific steps in step S4 are: S41, the side lining piece moves to the top of the longitudinal moving chassis along with the load-bearing slider, and the supporting cylinder descends; S42, the longitudinal movement chassis drives the load-bearing slider and the side lining sheet to move to the front of the frame near the circumferential assembly mechanism, and the second longitudinal movement track of the longitudinal movement transport mechanism is located above the supporting cylinder at the front end of the frame, and the supporting cylinder and the longitudinal movement transport mechanism both lift the second longitudinal movement track, support the second longitudinal movement track and make the second longitudinal movement track located above the circumferential assembly mechanism; S43, the side lining piece moves along with the load-bearing slider on the second longitudinal track to just above the lining piece suction cup of the annular assembly mechanism.

7. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: The specific steps in step S9 are: S91, the arch lining piece moves to the top of the longitudinal moving chassis along with the load-bearing slider, and the supporting cylinder descends; S92, the longitudinal moving chassis drives the load-bearing sliding block and the arch lining sheet to move to the front of the frame near the circumferential assembly mechanism, and the second longitudinal moving track of the longitudinal moving transport mechanism is located above the supporting cylinder at the front end of the frame, and the supporting cylinder and the longitudinal moving transport mechanism both lift the second longitudinal moving track to support the second longitudinal moving track; S93, the arch lining piece moves to the arch assembly position along with the load-bearing slider on the second longitudinal track, and the longitudinal transportation mechanism performs longitudinal and lifting adjustments on the arch lining piece to put the arch lining piece in place accurately, thereby completing the assembly of the arch lining piece.

8. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: The longitudinal transport mechanism is also provided with a transverse frame and a third transverse cylinder for transverse adjustment. When the side lining sheet or the arch lining sheet is placed from the jacking mechanism onto the longitudinal transport mechanism, when it is placed from the longitudinal transport mechanism onto the arch jacking mechanism, and when the longitudinal transport mechanism directly installs the arch lining sheet, the longitudinal transport mechanism performs adjustments in the transverse, longitudinal and vertical directions.

9. The construction process of the tunnel lining segment assembly trolley according to claim 1 is characterized in that: When the assembly steps S4 to S6 of one lining sheet are being performed, the steps S1 to S3 of another lining sheet are being performed simultaneously.

10. The construction process of the tunnel lining segment assembly trolley according to claim 4, characterized in that: The transport vehicle carries two side lining sheets and / or one arch lining sheet at a time.

Images