A mobile highway tunnel invert construction trestle vehicle and pit crossing walking method

Abstract

A motorized highway tunnel inverted arch construction trestle vehicle and a method for traveling over a pit mainly include an inverted arch bridge, a side foldable mechanism and a conveying screw are installed at the lower end of the inverted arch bridge, and the conveying screw is driven by a conveying motor and drives an adjustable positioning mechanism to move left and right; the side foldable mechanism includes a collection frame, and a side electric jack is rotatably installed at one end of the collection frame, and a side bottom wheel is installed at the piston rod of the side electric jack; a retractable electric jack is hinged on the cylinder body of the side electric jack, and the other side of the retractable electric jack is hinged with the collection frame; the adjustable positioning mechanism includes a fixed plate, the upper end of the fixed plate is threadedly connected to the conveying screw through a fixed pipe, and the lower end is connected to the adjustable driving structure through a middle electric jack; the adjustable driving structure includes a supporting wheel frame, a transverse bottom frame is installed at the lower end of the supporting wheel frame, and movable bottom wheels are installed on the transverse bottom frame on the left and right, and the movable bottom wheels are driven by a belt transmission mechanism. A motorized highway tunnel inverted arch construction trestle vehicle and a method for traveling over a pit provided by the present invention can quickly travel over a pit.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel trestle bridges, in particular to a motorized highway tunnel invert construction trestle bridge vehicle and a pit crossing walking method. Background Art

[0002] The invert is one of the main components of the tunnel structure. It is the foundation of the tunnel structure. On the one hand, it effectively transfers the stratum pressure above the tunnel to the underground through the tunnel side wall structure or the load on the road surface, and also effectively resists the reaction force from the stratum below the tunnel. In fact, it is a foundation beam (plate) that can withstand the permanent stratum load and the temporary road load (dynamic load). Therefore, the stress state of the invert is relatively complex. When constructing the invert structure, the trestle is constructed under the front approach bridge, allowing vehicles to pass through the trestle from the filling layer directly to the lower steps, which perfectly cooperates with the concrete construction of the invert (bottom plate) under various step excavation methods to achieve the construction requirements of early closure and early ring formation.

[0003] The existing mobile highway tunnel invert construction trestle vehicles have the problem of not being able to adjust the height of the trestle vehicle according to ground requirements, not being convenient for side protection of the trestle vehicle, and not being convenient for retracting the side guide wheels according to requirements. The existing tunnel invert construction trestle is generally assisted by external machinery when crossing the excavated invert, such as lifting by an excavator, pushing by a loader, etc. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mobile highway tunnel invert construction trestle vehicle and a pit crossing walking method, which can conveniently adjust the height of the trestle vehicle, can retract the side guide wheels according to needs, and can also protect the side of the trestle vehicle.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A motorized highway tunnel inverted arch construction trestle vehicle comprises an inverted arch bridge, side foldable mechanisms are installed on the left and right sides of the lower end of the inverted arch bridge, a conveying screw is rotatably installed on the lower end of the inverted arch bridge between the side foldable mechanisms, the conveying screw is driven to rotate by a conveying motor and drives an adjustable positioning mechanism to move left and right, and an adjustable driving structure is fixed at the lower part of the adjustable positioning mechanism;

[0007] The side foldable mechanism comprises a collection frame, one end of which is rotatably mounted with a side electric jack, and a side bottom wheel is mounted on the piston rod of the side electric jack; a retractable electric jack is hinged on the cylinder of the side electric jack, and the other side of the retractable electric jack is hinged with the collection frame;

[0008] The adjustable positioning mechanism comprises a first fixing plate, the upper end of which is threadedly connected to the conveying screw through a fixing pipe, and the lower end of which is connected to the adjustable driving structure through a middle electric jack;

[0009] The adjustable driving structure includes a supporting wheel frame, the upper end of which is connected to the central electric jack, and the lower end is equipped with a transverse frame, on which movable bottom wheels are installed on the left and right sides, and the movable bottom wheel is coaxially connected to the driven wheel; a driving wheel is installed on the corresponding supporting wheel frame, and a transmission belt is wound around the driving wheel and the driven wheel, and the driving wheel is driven by a driving motor.

[0010] The transverse base frame is rotatably connected to the supporting wheel frame via a rotating shaft, a guide rod is fixed on the corresponding supporting wheel frame, a compression spring and a top frame are sequentially sleeved on the guide rod, a tensioning wheel is installed at the front end of the top frame, and the tensioning wheel tensions the transmission belt.

[0011] An adjustable guard frame structure is installed on the left and right sides of the upper end of the inverted arch bridge, and the adjustable guard frame structure includes a longitudinal bracket, which is inserted into the mounting tube and screwed into the adjusting bolt to tighten it, and a transverse protection tube is fixed on the upper part of the longitudinal bracket; transverse protection rods are inserted on the left and right sides of the transverse protection tube, and the transverse protection rods are tightened by tightening bolts.

[0012] An inner reinforcing frame is fixed on the inner upper part of the inverted arch bridge, and a movable frame is embedded in the inner reinforcing frame. Second fixing plates are welded on the left and right ends of the movable frame, and bearings are installed on the two second fixing plates. The conveying screw is horizontally installed in the left and right inner rings of the bearings.

[0013] A protection frame is fixed on the left and right sides of the lower part of the inner reinforcement frame, and a first storage battery is installed in the protection frame.

[0014] A method for a mobile highway tunnel invert construction trestle vehicle to travel across a pit comprises the following steps:

[0015] 1) The driving motor drives the driven wheel to rotate through the transmission belt using the driving wheel, and then uses the moving bottom wheel to move the inverted arch bridge;

[0016] 2) If a pothole is encountered, the central electric jack is extended to raise the height of the inverted arch bridge; the side electric jacks on both sides are retracted, so that when the device moves forward, the bridge body of the inverted arch bridge and the side foldable mechanisms on the left and right sides are located on the upper side of the pothole;

[0017] 3) After the bridge body on one side of the inverted arch bridge passes over the pothole, it continues to move forward until the adjustable driving structure reaches the pothole and stops; then, the side electric jacks on both sides extend to make the side bottom wheels contact the ground; at the same time, the middle electric jack retracts, and then the conveying motor drives the fixed pipe to move through the conveying screw 6 to adjust the position of the moving bottom wheel; when the adjustable driving structure passes over the pothole, the middle electric jack extends, and the moving bottom wheel contacts the ground and continues to move forward;

[0018] 4) Before the other side of the inverted arch bridge passes through the pothole, the electric jack on the other side is retracted. After the other side of the inverted arch bridge passes through the pothole, the electric jack on the other side is extended and reset to make the side bottom wheel contact with the ground, thereby completing the crossing of the pothole.

[0019] When passing through potholes, the retractable electric jack is used to drive the side electric jack to move and retract it into the collection frame for temporary storage.

[0020] The present invention provides a motorized highway tunnel invert construction trestle vehicle and a pit crossing walking method, which has the following technical effects:

[0021] 1) By setting the side bottom wheels lifted by the side electric jacks, the bridge can be retracted in time when encountering potholes, and can be supported on the ground when away from potholes; by setting the mobile bottom wheels lifted by the middle electric jacks, the bridge can be driven by the driving motor to move normally when away from potholes, and the middle electric jack can be used to lift the arch bridge when encountering potholes, so as to facilitate the passage of other parts of the arch bridge; and the mobile bottom wheels themselves are driven to move left and right by the conveying screw, so as to quickly cross the potholes. In addition, the upper front part of the collection frame is hinged with a retractable electric jack, and the lower part of the retractable electric jack is axially connected to the lower front part of the side electric jack, which is more conducive to using the retractable electric jack to store the side electric jack and the side bottom wheels into the collection frame when it is necessary to cross the potholes, so that the arch bridge can cross the potholes and move to one side.

[0022] 2) The conveying screw can be used to drive the adjustable positioning mechanism and the adjustable driving structure to move left and right, so that it can be flexibly moved whether crossing potholes or small slopes. Compared with walking on the ground, it is faster and more effective, and no reversing adjustment is required.

[0023] 3) The positioning wheel is in contact with the top of the movable frame, which is conducive to enabling the positioning wheel to flexibly move left and right on the top of the movable frame during use, thereby increasing the support function for the middle part of the inverted arch bridge. The positioning wheel can change the position of the adjustable driving mechanism. When one side passes and before the other side of the inverted arch bridge passes through the pothole, the side electric jack on the other side is retracted, and the supporting overall structure is a side foldable mechanism and an adjustable driving mechanism. By adjusting the position of the adjustable positioning mechanism (9), the overall structural support is more balanced.

[0024] 4) The lower part of the supporting wheel frame is rotatably connected to a transverse frame, which is conducive to enabling the movable bottom wheels on the left and right sides of the transverse frame to move up and down on the left and right sides of the supporting wheel frame 91 according to the slope of the road surface during use; at the same time, the tensioning wheel is used for tensioning to ensure that the transmission belt is always effective.

[0025] 5) The longitudinal bracket is inserted into the inner side of the mounting tube, which is convenient for adjusting the length of the longitudinal bracket inserted in the mounting tube according to needs during use, and then convenient for adjusting the height of the transverse protection tube according to needs; the front connection between the transverse protection tube and the transverse protection rod is threadedly connected with a tightening bolt, which is convenient for fixing the transverse protection rod to the inner side of the transverse protection tube with the tightening bolt during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0027] Figure 1 It is the front view of the present invention.

[0028] Figure 2 It is a front view of the side foldable mechanism in the present invention.

[0029] Figure 3 It is a front view of the adjustable positioning mechanism in the present invention.

[0030] Figure 4 It is a front view of the adjustable driving structure in the present invention.

[0031] Figure 5 It is a structural schematic diagram of the adjustable driving structure in the present invention.

[0032] Figure 6 It is a front view of the adjustable guard frame structure in the present invention.

[0033] Figure 7 It is a schematic diagram of the working state of the present invention.

[0034] Figure 8 It is a structural schematic diagram of the adjustable positioning mechanism and the adjustable driving structure in the present invention.

[0035] In the figure: inverted arch bridge 1, inner reinforcement frame 2, movable frame 3, second fixed plate 4, bearing 5, conveying screw 6, conveying motor 7, adjustable positioning mechanism 8, fixed tube 81, longitudinal plate 82, positioning wheel 83, first fixed plate 84, middle electric jack 85, fixing bolt 86, adjustable driving structure 9, supporting wheel frame 91, transverse bottom frame 92, transmission rod 93, movable bottom wheel 94, driven wheel 95, driving motor 96, driving wheel 97, transmission belt 98, side foldable mechanism 10, collecting frame 101, shaft 102, side electric jack 103, side wheel frame 104, side bottom wheel 105, retractable electric jack 106, protection 11, first storage battery 12, mounting tube 13, adjusting bolt 14, adjustable guard frame structure 15, longitudinal bracket 151, transverse protection tube 152, transverse protection rod 153, tightening bolt 154, side protection block 155. DETAILED DESCRIPTION

[0036] like Figure 1 As shown, a mobile highway tunnel invert construction trestle vehicle includes an invert bridge 1, an inner reinforcement frame 2, a movable frame 3, a second fixed plate 4, a bearing 5, a conveying screw 6, a conveying motor 7, an adjustable positioning mechanism 8, an adjustable driving structure 9, a side foldable mechanism 10, a protective frame 11, a first battery 12, a mounting tube 13, an adjusting bolt 14 and an adjustable guard frame structure 15.

[0037] The inner reinforcement frame 2 is installed on the inner upper part of the inverted arch bridge 1; the movable frame 3 is embedded in the inner side of the inner reinforcement frame 2; the second fixed plate 4 is welded on the left and right sides of the inner part of the movable frame 3; the bearing 5 is embedded in the inner lower part of the second fixed plate 4; the conveying screw 6 is inserted and fixed in the inner ring of the bearing 5, and the conveying screw 6 is also connected to the output shaft of the conveying motor 7 by transmission; the conveying motor 7 is installed on the right side of the second fixed plate 4 by bolts; the adjustable positioning mechanism 8 is installed on the inner side of the movable frame 3 and is threadedly connected to the conveying screw 6; the adjustable driving structure 9 is installed at the lower part of the adjustable positioning mechanism 8. The side foldable mechanism 10 is installed on the left and right sides of the lower part of the inverted arch bridge 1, with two groups on the left and two groups on the right, and the two groups on the same side act synchronously. The protective frame 11 is bolted to the left and right sides of the lower part of the inner reinforcement frame 2; the first battery 12 is installed on the inner side of the protective frame 11; the mounting tube 13 is installed on the front and rear parts of the left and right sides of the inverted arch bridge 1; the adjusting bolt 14 is installed on the front side of the mounting tube 13 and can be screwed into the mounting tube 13; the adjustable guard frame structure 15 is installed on the inner side of the mounting tube 13.

[0038] like Figure 2 As shown, the side foldable mechanism 10 includes a collection frame 101, an axle 102, a side electric jack 103, a side wheel frame 104, a side bottom wheel 105 and a retractable electric jack 106. The collection frame 101 is embedded in the left and right sides of the lower part of the inverted arch bridge 1; the axle 102 is rotatably installed in the upper right side of the collection frame 101, and the side electric jack 103 is welded to the lower part of the axle 102. The side electric jack 103 is arranged at the lower inner part of the collection frame 101, so that the side electric jack 103 can be extended and retracted according to the needs when in use, so as to make it easier to cross the potholes. The lower part of the side electric jack 103 is installed with a side wheel frame 104 by bolts, and the inner lower part of the side wheel frame 104 is hinged with a side bottom wheel 105. The upper front part of the collecting frame 101 is hinged with a retractable electric jack 106, and the lower part of the retractable electric jack 106 is hinged with the lower front part of the side electric jack 103. When it is necessary to cross a pothole, the retractable electric jack 106 can be retracted to store the side electric jack 103 and the side bottom wheel 105 into the collecting frame 101, so that the inverted arch bridge 1 can cross the pothole and move to one side.

[0039] like Figure 3 As shown, the adjustable positioning mechanism 8 includes a fixed tube 81, a longitudinal plate 82, a positioning wheel 83, a first fixed plate 84, a middle electric jack 85 and a fixing bolt 86. The fixed tube 81 is threadedly connected with the conveying screw 6, and is convenient to drive the conveying motor 7 according to the demand when in use, and the conveying motor 7 drives the conveying screw 6 to rotate, so as to facilitate the flexible movement of the position of the fixed tube 81 and the adjustable driving structure 9. The fixed tube 81 is arranged on the inner side of the movable frame 3; the longitudinal plates 82 are welded on the front and rear sides of the upper part of the fixed tube 81; the positioning wheels 83 are rotatably installed on the left and right sides of the upper part of the longitudinal plate 82, and the positioning wheels 83 are in contact with the top of the movable frame 3. When in use, the positioning wheel 83 can be flexibly moved left and right on the top of the movable frame 3, so as to increase the support function of the middle part of the inverted arch bridge 1. The lower ends of the fixed tube 81 and the longitudinal plate 82 are welded with a first fixed plate 84; the inner side of the first fixed plate 84 is installed with a middle electric jack 85 through a fixing bolt 86.

[0040] like Figure 4-5 As shown, the adjustable driving structure 9 includes a supporting wheel frame 91, a transverse chassis 92, a transmission rod 93, a movable bottom wheel 94, a driven wheel 95, a driving motor 96, a driving wheel 97 and a transmission belt 98. The supporting wheel frame 91 is bolted to the lower part of the middle electric jack 85. When in use, the middle electric jack 85 can be used to drive the supporting wheel frame 91 to adjust the height of the adjustable driving structure 9 according to needs, so as to facilitate the height adjustment of the inverted arch bridge 1 when crossing potholes. The lower part of the supporting wheel frame 91 is hinged with a transverse chassis 92, and the hinge point is located at the center of the transverse chassis 92. When in use, the movable bottom wheels 94 on the left and right sides of the transverse chassis 92 can be moved up and down on the left and right sides of the supporting wheel frame 91 according to the slope of the road surface. The horizontal base frame 92 has a transmission rod 93 rotatably installed on both sides; a movable bottom wheel 94 is installed on the rear side of the transmission rod 93; a driven wheel 95 is fixedly connected to the front side of the transmission rod 93; a driving motor 96 is installed on the upper front side of the supporting wheel frame 91; a driving wheel 97 is fixedly connected to the output shaft of the driving motor 96; a transmission belt 98 is sleeved on the outer sides of the driving wheel 97 and the driven wheel 95.

[0041] In order to prevent the transmission belt 98 from loosening when the horizontal bottom frame 92 swings left and right, guide rods 9.1 are fixed on the left and right sides of the support wheel frame 91. The guide rods 9.1 are covered with compression springs 9.2 and a top frame 9.3. A tensioning wheel 9.4 is installed at the front end of the top frame 9.3 to tension the transmission belt 98. When the support wheel frame 91 rotates, the left and right tensioning wheels 9.4 are always extended, so that the transmission belt 98 is kept in a tensioned transmission state to prevent it from falling off.

[0042] like Figure 6As shown, in the above embodiment, the adjustable guard frame structure 15 includes a longitudinal bracket 151, a transverse protection tube 152, a transverse protection rod 153, a tightening bolt 154 and a side protection block 155. The longitudinal bracket 151 is inserted into the mounting tube 13 and screwed into the adjusting bolt 14 for tightening. When in use, it is convenient to adjust the length of the longitudinal bracket 151 inserted into the mounting tube 13 according to needs, and then it is convenient to adjust the height of the transverse protection tube 152 according to needs. The upper part of the longitudinal bracket 151 is welded with a transverse protection tube 152; the left and right sides of the transverse protection tube 152 are inserted with a transverse protection rod 153; the front side connection of the transverse protection tube 152 and the transverse protection rod 153 is threadedly connected with a tightening bolt 154, and the transverse protection rod 153 is conveniently fixed to the inner side of the transverse protection tube 152 by the tightening bolt 154 when in use; the side of the transverse protection tube 152 away from the transverse protection tube 152 is welded with a side protection block 155.

[0043] The adjustable guard frame structure 15 can be adjusted up and down to adapt to the construction of inverts with different depths. At the same time, when large machinery passes, the height can be lowered to allow the upper part to pass smoothly.

[0044] The device is operated by remote control, and the control device communicates with the main control unit of the device (set at the battery installation position) in a two-way wireless manner. The control device includes a handheld remote control (model: Fengying-M12) and a removable tablet smart device. The remote control is used to control the movement of the device, and the tablet smart device is used to display the working condition data and the selection and configuration of the working parameters.

[0045] The second battery is on the inner side of the trestle and will not affect the movement of the adjustable drive structure 9. The second battery provides power for the drive motor 96 and the middle electric jack 85. The switch of the drive motor 96 is set separately, divided into forward rotation, reverse rotation and stop. When it is forward rotation, it drives the whole to move forward. The switch is controlled by a remote control switch (three buttons for forward, backward and stop); the switch of the middle electric jack 85 is set separately, divided into growth, retraction and stop, and the switch is controlled by a remote control switch (retract, release and stop).

[0046] The first storage battery 12 provides power for the side electric jack 103, the retractable electric jack 106, and the conveying motor 7. The switch of the side electric jack 103 is set separately, which is divided into growth, retraction and stop. The switch is controlled by a remote control switch (retract, release, stop). The switch of the retractable electric jack 106 is set separately, which is divided into growth, retraction and stop. The switch is controlled by a remote control switch (retract, release, stop); the switch of the conveying motor 7 is set separately, which is divided into forward rotation, reverse rotation and stop. The switch is controlled by a remote control switch (forward, reverse, stop).

[0047] Working principle and process:

[0048] 1) When in use, adjust the length of the longitudinal bracket 151 inserted in the installation tube 13 according to needs, so as to adjust the height of the transverse protection tube 152, and tighten the adjustment bolt 14 after the adjustment is completed.

[0049] 2) The driving motor 96 drives the driving belt 98 to run by the driving wheel 97, and the driving belt 98 drives the driven wheel 95 to rotate, thereby driving the moving bottom wheel 94 to rotate, and the moving bottom wheel 94 is used to move the inverted arch bridge 1.

[0050] 3) If Figure 7 As shown, when moving forward to the left, if encountering a pothole, the middle electric jack 85 extends to raise the height of the inverted arch bridge 1. At the same time, the side electric jack 103 on the left side is retracted, so that during the forward movement of the device, the left half of the inverted arch bridge 1 and the side foldable mechanism 10 on the left side are located on the upper side of the pothole and pass through the pothole.

[0051] 4) After the left side of the inverted arch bridge 1 passes over the pothole, it continues to move forward and stops when the adjustable driving structure 9 reaches the pothole. Subsequently, the side electric jacks 103 on both sides extend to make the side bottom wheels 105 on the left and right sides of the inverted arch bridge 1 contact the ground; at the same time, the middle electric jack 85 shrinks, and then the fixed pipe 81 is driven by the conveying motor 7 through the conveying screw 6 to adjust the position of the movable bottom wheel 94. When the adjustable driving structure 9 moves to the left side of the pothole, the middle electric jack 85 extends, and the movable bottom wheel 94 contacts the ground and continues to move forward. Before the bridge body on the right side of the inverted arch bridge 1 reaches the pothole, the side electric jack 103 on the right side retracts, and after the inverted arch bridge 1 completely passes through the pothole, the side electric jack 103 on the right side extends and resets.

[0052] In the process of passing through the potholes, the retractable electric jack 106 can be used to drive the side electric jack 103 to move when necessary, and retract it into the collection frame 101 for temporary storage.

Claims

1. A mobile highway tunnel invert construction trestle vehicle, characterized in that: The invention comprises an inverted arch bridge (1), wherein side foldable mechanisms (10) are installed on the left and right sides of the lower end of the inverted arch bridge (1), and a conveying screw (6) is rotatably installed on the lower end of the inverted arch bridge (1) between the side foldable mechanisms (10), and the conveying screw (6) is driven to rotate by a conveying motor (7) and drives an adjustable positioning mechanism (8) to move left and right, and an adjustable driving structure (9) is fixed to the lower part of the adjustable positioning mechanism (8); The side foldable mechanism (10) comprises a collection frame (101), one end of the collection frame (101) is rotatably mounted with a side electric jack (103), a side bottom wheel (105) is mounted on the piston rod of the side electric jack (103); a retractable electric jack (106) is hingedly connected to the cylinder body of the side electric jack (103), and the other side of the retractable electric jack (106) is hingedly connected to the collection frame (101); The adjustable positioning mechanism (8) comprises a first fixing plate (84), the upper end of the first fixing plate (84) being threadedly connected to the conveying screw (6) via a fixing tube (81), and the lower end of the first fixing plate (84) being connected to the adjustable driving structure (9) via a middle electric jack (85); The adjustable driving structure (9) comprises a supporting wheel frame (91), the upper end of the supporting wheel frame (91) is connected to the middle electric jack (85), and the lower end is provided with a transverse base frame (92), and movable bottom wheels (94) are provided on the left and right sides of the transverse base frame (92), and the movable bottom wheel (94) is coaxially connected to the driven wheel (95); a driving wheel (97) is provided on the corresponding supporting wheel frame (91), and a transmission belt (98) is wound around the driving wheel (97) and the driven wheel (95), and the driving wheel (97) is driven by a driving motor (96).

2. A mobile highway tunnel invert construction trestle vehicle according to claim 1, characterized in that: The transverse bottom frame (92) is rotatably connected to the supporting wheel frame (91) via a rotating shaft, a guide rod (9.1) is fixed to the corresponding supporting wheel frame (91), a compression spring (9.2) and a top frame (9.3) are sequentially sleeved on the guide rod (9.1), a tensioning wheel (9.4) is installed at the front end of the top frame (9.3), and the tensioning wheel (9.4) tensions the transmission belt (98).

3. A mobile highway tunnel invert construction trestle vehicle according to claim 1, characterized in that: An adjustable guard frame structure (15) is installed on the left and right sides of the upper end of the inverted arch bridge (1). The adjustable guard frame structure (15) comprises a longitudinal support (151). The longitudinal support (151) is inserted into the installation tube (13) and screwed into the adjustment bolt (14) for tightening. A transverse protection tube (152) is fixed to the upper part of the longitudinal support (151). Transverse protection rods (153) are inserted into the left and right sides of the transverse protection tube (152). The transverse protection rods (153) are tightened by tightening bolts (154).

4. A mobile highway tunnel invert construction trestle vehicle according to claim 1, characterized in that: An inner reinforcing frame (2) is fixed to the inner upper part of the inverted arch bridge (1), a movable frame (3) is embedded in the inner reinforcing frame (2), second fixing plates (4) are welded to the left and right ends of the movable frame (3), bearings (5) are mounted on the two second fixing plates (4), and a conveying screw (6) is horizontally mounted in the inner rings of the left and right bearings (5).

5. A mobile highway tunnel invert construction trestle vehicle according to claim 4, characterized in that: A protection frame (11) is fixed to the left and right sides of the lower part of the inner reinforcement frame (2), and a first storage battery (12) is installed in the protection frame (11).

6. A method for a mobile highway tunnel invert construction trestle vehicle to travel across a pit according to any one of claims 1 to 5, comprising the following steps: 1) The driving motor (96) drives the driven wheel (95) to rotate via the driving belt (98) through the driving wheel (97), and then uses the moving bottom wheel (94) to move the inverted arch bridge (1); 2) If a pothole is encountered, the central electric jack (85) is extended to raise the height of the inverted arch bridge (1); the side electric jacks (103) on both sides are retracted, so that during the forward movement of the device, the bridge body of the inverted arch bridge (1) and the side foldable mechanisms (10) on the left and right sides are located on the upper side of the pothole; 3) After one side of the inverted arch bridge (1) passes over the pothole, it continues to move forward until the adjustable driving structure (9) reaches the pothole and stops; then, the side electric jacks (103) on both sides extend to make the side bottom wheels (105) contact the ground; at the same time, the middle electric jack (85) retracts, and then the fixed pipe (81) is driven to move by the conveying motor (7) through the conveying screw 6 to adjust the position of the movable bottom wheel (94); when the adjustable driving structure (9) passes over the pothole, the middle electric jack (85) extends, and the movable bottom wheel (94) contacts the ground and continues to move forward; 4) Before the other side of the inverted arch bridge (1) passes through the pothole, the side electric jack (103) on the other side is retracted, and after the other side of the inverted arch bridge (1) passes through the pothole, the side electric jack (103) on the other side is extended and reset, so that the side bottom wheel (105) contacts the ground, thereby completing the crossing of the pothole.

7. A method for a mobile highway tunnel invert construction trestle vehicle to cross a pit according to claim 6, characterized in that: In the process of passing through the pothole, the retractable electric jack (106) is used to drive the side electric jack (103) to move and retract it into the collection frame (101) for temporary storage.

Images