Tunnel lining trolley and self-walking approach bridge

Abstract

The utility model discloses a self-walking approach bridge and a tunnel lining trolley, and belongs to the technical field of tunnel construction equipment. The self-walking approach bridge is obliquely arranged downwards from front to back, a connecting part is arranged at the front end of the self-walking approach bridge, and the self-walking approach bridge is formed by splicing a plurality of sub approach bridges and a switch tip section front and back; each sub approach bridge comprises an obliquely-arranged framework, approach bridge rails and pulley assemblies, the approach bridge rails and the pulley assemblies are arranged on the frameworks, every two adjacent approach bridge rails are detachably connected and aligned, every two adjacent frameworks are hinged, and two pulley assemblies are arranged at the bottom of each sub approach bridge front and back side by side. A walking part capable of walking on a tunnel track is arranged at the bottom of the front one-section or multi-section approach bridge, and telescopic supporting assemblies are arranged on the left side and the right side of the front one-section or multi-section approach bridge; the switch tip section is fixed on the sub approach bridge at the tail section and comprises two angular guide rails which are arranged side by side left and right; the angular guide rails are used for achieving transition between the approach bridge rails and the corresponding tunnel rails and are arranged on the corresponding tunnel rails in a sliding mode through channel steel with a downward opening.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tunnel construction equipment, and particularly relates to a tunnel lining trolley and a self-walking approach bridge. BACKGROUND

[0002] With the design requirements of modern tunneling construction, some tunnels need to be subjected to secondary lining construction after tunneling is completed, and under certain site construction conditions, track transport vehicles need to pass through the lining trolley to run to the rear end of the tunneling machine, and the current trolley design has two main vehicle passing schemes:

[0003] 1. A lower passing channel is reserved for the trolley, and the vehicle can directly pass through from below.

[0004] 2. A middle passing channel is reserved, and the vehicle needs to climb to pass through the trolley.

[0005] Currently, the second scheme of climbing and then crossing requires front and rear approach bridges for vehicle access. For example, the patent with application number CN202320268489.5 discloses a stack bridge for full-face tunnel boring machine construction, characterized in that it comprises an approach bridge, an approach bridge walking mechanism, a main bridge, a main bridge walking mechanism, a main bridge leg, a mobile crane and a crane traction mechanism. The main bridge is multiple, and each main bridge is provided with a main bridge walking mechanism. Adjacent two main bridges are rigidly connected through the main bridge leg, and multiple main bridges are connected to form a stack bridge body. The stack bridge body is provided with multiple inverted arch operation surfaces below, and the main bridge leg is provided with a leg lifting mechanism. The main bridge walking mechanism and the main bridge leg cooperate to alternately support the stack bridge body. The mobile crane is slidingly connected to the stack bridge body, and the stack bridge body is fixedly provided with a crane driving mechanism. The crane driving mechanism is connected with the mobile crane through the crane traction mechanism. The approach bridge is two, symmetrically arranged at the front and rear ends of the stack bridge body, and the approach bridge walking mechanism is arranged on the approach bridge. For example, the patent with application number CN202023073465.X discloses a mobile stack bridge inverted arch slipform trolley, which comprises a stack bridge system and a slipform system. The stack bridge system comprises a front approach bridge, a stack bridge main beam and a rear approach bridge arranged along the tunnel direction. The front approach bridge and the rear approach bridge are installed and connected at the two ends of the stack bridge main beam. The middle part of the front approach bridge and the rear approach bridge is connected with the top beam of the two ends of the stack bridge main beam through the approach bridge oil cylinder. The front end of the stack bridge main beam is provided with a jacking oil cylinder and a stack bridge front support. The front end jacking oil cylinder is installed on the stack bridge front support, and the stack bridge front support is installed with a driving system at the bottom and can move along the walking steel rail. The rear end of the stack bridge main beam is provided with a jacking oil cylinder, a stack bridge rear support and a rear support wheel. The rear end jacking oil cylinder is installed on the stack bridge rear support and can be lifted on the ground. The rear support wheel can move along the ground after the stack bridge rear support is raised. The slipform system is arranged at the rear end of the stack bridge main beam and comprises a horizontal slide seat fixed transversely on the stack bridge main beam, a winch installed at the two ends of the horizontal slide seat, a circular arc guide rail transversely installed at the bottom of the stack bridge main beam, two groups of guide pulleys installed on the guide rail, and a circular arc formwork installed at the bottom of each group of guide pulleys. Each group of guide pulleys is driven by a steel wire rope and a winch to drive the circular arc formwork to move along the circular arc guide rail. Each group of guide pulleys is driven by a numerical control oil cylinder and a circular arc formwork to drive the circular arc formwork to move along the radial direction of the tunnel.A patent with application number CN202410604852.9 discloses a TBM construction inverted arch trestle, which comprises a main trestle part, a front approach bridge part, a rear approach bridge part, a first inverted arch formwork, a second inverted arch formwork, a main drive wheel device, a driven wheel device, a front main support leg, a rear main support leg, six groups of liftable auxiliary support legs in the middle part, a liftable auxiliary support wheel longitudinally translatable in the middle part, a longitudinal translation oil cylinder and a formwork lifting and moving device; the front approach bridge part is hingedly installed at the front end of the main trestle part, and the rear approach bridge part is hingedly installed at the rear end of the main trestle part; the main trestle part comprises a bottom beam and a box frame, the box frame is transversely slidably installed on the bottom beam, a transverse translation oil cylinder is arranged between the bottom beam and the box frame, and the transverse relative translation between the box frame and the bottom beam is driven by the transverse translation oil cylinder; the front main support leg, the rear main support leg and the six groups of liftable auxiliary support legs in the middle part are arranged on the bottom beam of the main trestle part, wherein the front main support leg and the rear main support leg are liftable structures driven by oil cylinders; the six groups of liftable auxiliary support legs in the middle part are used for supporting the main trestle part; the main drive wheel device and the driven wheel device are arranged on the box frame of the main trestle part, and are used for realizing the walking of the main trestle part; the liftable auxiliary support wheel longitudinally translatable in the middle part and the longitudinal translation oil cylinder connected with the liftable auxiliary support wheel are arranged on the box frame of the main trestle part; side wing support frames are symmetrically arranged on both sides of the width direction of the box frame of the main trestle part, tracks arranged along the length direction of the main trestle part are arranged on the side wing support frames, the formwork lifting and moving device is arranged on the tracks, and the first inverted arch formwork and the second inverted arch formwork are connected to the formwork lifting and moving device by steel wire ropes; the first inverted arch formwork and the second inverted arch formwork are the same in structure, and the structure comprises two transverse beams parallel to each other, longitudinal beams connected to the two sides of the two transverse beams, two side formworks connected to the longitudinal beams, a center beam connected to the two transverse beams and a center gutter formwork, the center gutter formwork comprises two parts symmetrically arranged on the center beam, and a transverse adjustment oil cylinder is arranged on the center beam to adjust the transverse position of the center gutter formwork.

[0006] At present, all the schemes are towed, and such a scheme can increase the load of the trolley driving operation, can make the hydraulic system more demanding, can increase the cost, and as a whole movement, the length of the marshalling is too long, the preparation work before and after the movement consumes a long time, and the construction efficiency is further reduced. Practical new type content

[0007] In order to solve the above problems, the tunnel lining trolley and the self-walking approach bridge provided by the embodiments of the utility model, the approach bridge can be removed from the trolley and can self-walk. The technical scheme is as follows:

[0008] In one aspect, the utility model embodiment provides a kind of self walking lead bridge, which is set obliquely from front to back and its front end is equipped with connecting portion 4;The self walking lead bridge is connected by multiple sub-lead bridges and a segment of turnout segment 15 from front to back, and the sub-lead bridge includes the inclinedly arranged framework 1 and the lead bridge track 2 and pulley assembly 3 thereon, and the adjacent two lead bridge tracks 2 are detachably connected and aligned, and the adjacent two frameworks 1 are hinged, and the bottom of each sub-lead bridge is provided with two pulley assemblies 3 side by side from front to back, and the bottom of the front one or more sub-lead bridges is provided with walking portion 7 that can walk on tunnel track, and the left and right sides of the front one or more sub-lead bridges are provided with telescopic support assembly 8;The turnout segment 15 is fixed on the last sub-lead bridge and includes two angle-shaped guide rails 51 arranged side by side;The angle-shaped guide rail 51 is used to realize the transition between the lead bridge track 2 and the corresponding tunnel track, and is arranged on the corresponding tunnel track by sliding through the downwardly open channel steel 53.

[0009] In the utility model embodiment, the turnout segment 15 includes two angle-shaped guide rails 51 arranged side by side, a first cross beam 52 between the two angle-shaped guide rails 51, and a channel steel 53 at the bottom of the angle-shaped guide rail 51 and cooperating with the tunnel track;The rear end of the lead bridge track 2 of the last segment is detachably connected with the front end of the angle-shaped guide rail 51 and is aligned;The angle-shaped guide rail 51 is arranged along the front-to-back direction, and its upper side is obliquely downward from front to back, and its rear end is overlapped on the corresponding tunnel track;The channel steel 53 is arranged along the front-to-back direction, and is buckled on the corresponding tunnel track, and can slide forward and backward on the tunnel track.

[0010] Specifically, the number of sub-lead bridges in the utility model embodiment is four, and they are sequentially numbered from front to back as first sub-lead bridge 11, second sub-lead bridge 12, third sub-lead bridge 13, and fourth sub-lead bridge 14;Only the bottom of the first sub-lead bridge 11 and the second sub-lead bridge 12 is provided with a walking portion 7, and only the first sub-lead bridge 11 is provided with a telescopic support assembly 8, and the walking portion 7 is arranged at the middle part of the sub-lead bridge;The pulley assemblies 3 of the first sub-lead bridge 11 and the second sub-lead bridge 12 each include two pulleys arranged side by side from front to back;The pulley assembly 3 at the front of the third sub-lead bridge 13 includes two pulleys arranged side by side from front to back, and the pulley assembly 3 at the back includes only one pulley;The pulley assemblies 3 of the fourth sub-lead bridge 14 each include only one pulley;The pulley assemblies 3 of the first sub-lead bridge 11 are fixed to the bottom of the framework 1 by two vertical columns 5 arranged side by side from front to back;The pulley assembly 3 at the front of the second sub-lead bridge 12 is fixed to the bottom of the framework 1 by two vertical columns 5 arranged side by side from front to back, and the pulley assembly 3 at the back is directly fixed to the bottom of the framework 1;The pulley assemblies 3 of the third sub-lead bridge 13 and the fourth sub-lead bridge 14 are each directly fixed to the bottom of the framework 1.

[0011] The utility model discloses a connecting part 4 including two horizontal hinged seats of left and right side arrangement, the horizontal hinged seat is connected with the corresponding end of trolley through horizontal bolt of left and right direction, the rear end of first sub approach bridge 11, the front and rear two ends of second sub approach bridge 12, the front and rear two ends of third sub approach bridge 13 and the front end of fourth sub approach bridge 14 are equipped with the hinged part 21, and the hinged part 21 of adjacent two sections of sub approach bridge is hinged through vertical vertical bolt, the front end of angle guide rail 51 is fixedly connected with the rear end of approach bridge track 2 of fourth sub approach bridge 14 to realize the connection between switch tip section 15 and fourth sub approach bridge 14.

[0012] Specifically, the frame 1 of the first sub approach bridge 11, the second sub approach bridge 12 and the third sub approach bridge 13 in the utility model embodiment is a rectangular frame arranged along the front and rear directions; the frame 1 of the fourth sub approach bridge 14 includes two side plates 41 arranged side by side and a plurality of second cross beams 42 therebetween, and the two side plates 41 are located directly above the two tunnel slide rails respectively; the side plate 41 is arranged along the front and rear directions, and the upper side thereof is arranged obliquely downward from front to rear, the upper end thereof is protruded upward relative to the second cross beam 42 to serve as an approach bridge track 2, and the bottom thereof is provided with two pulley assemblies 3 side by side in front and rear directions; the plurality of second cross beams 42 are arranged side by side in front and rear directions and are all arranged along the left and right directions, and the front end of the second cross beam 42 is provided with a hinged part 21; the approach bridge tracks 2 of the first sub approach bridge 11, the second sub approach bridge 12 and the third sub approach bridge 13 are connected through a fishplate 22, and the front end of the side plate 41 and the rear end of the approach bridge track 2 of the fourth sub approach bridge 14 and the rear end of the side plate 41 and the front end of the angle guide rail 51 are all connected through a connecting plate 23; the front part and the rear part of the angle guide rail 51 are each provided with a channel steel 53, the number of the first cross beams 52 is two, and the two first cross beams 52 are arranged along the left and right directions, and the two first cross beams 52 are arranged at the front part and the middle part of the switch tip section 15 respectively, and the width of the first cross beam 52 in the middle part is greater than that of the first cross beam 52 in the front part.

[0013] Preferably, the walking part 7 in the utility model embodiment can be arranged on the bottom of the frame 1 in a lifting manner; the bottom of the frame 1 is provided with a sliding frame 6 matched with the walking part 7 in the vertical direction, the walking part 7 is slidingly arranged on the sliding frame 6, and two screw rod lifting structures 9 are arranged between the left and right sides of the walking part 7 and the corresponding sides of the frame 1 respectively, and the two screw rod lifting structures 9 on the same side are arranged side by side in front and rear directions and are vertically arranged.

[0014] Wherein, the walking part 7 in the utility model embodiment includes slide base 71, two chains 75, two wheel pairs 72 which are arranged side by side in front and back at the bottom of slide base 71, speed reducer 73 on slide base 71, bearing seat 74 on slide base 71 and the output shaft of speed reducer 73 and two sprocket wheels 76 which are arranged side by side in left and right, the slide base 71 is slidably arranged on the slide 6 and the left and right sides thereof are connected with the lower end of the corresponding side screw rod lifting structure 9 respectively, the wheel pair 72 is arranged along the left and right direction and is slidably arranged on the tunnel track, the speed reducer 73 and the bearing seat 74 are arranged side by side in left and right and both are located above the wheel pair 72, the output shaft is arranged along the left and right direction and the end portion thereof is rotatably arranged on the bearing seat 74, and the two sprocket wheels 76 are respectively drivingly connected with the two wheel pairs 72 through the two chains 75.

[0015] Wherein, the telescopic support assembly 8 in the utility model embodiment is arranged obliquely in the left and right direction, and is arranged obliquely from bottom to top on the framework 1;The telescopic support assembly 8 includes upper supporting leg 81, double-head screw rod 82, lower supporting leg 83 and foot pad 84 from top to bottom;The upper end of the upper supporting leg 81 is hinged to the corresponding side of the framework 1 through the front and back upper rotating shaft, and the lower end is a threaded sleeve and is threadedly connected with the upper part of the double-head screw rod 82;The upper end of the lower supporting leg 83 is a threaded sleeve and is threadedly connected with the lower part of the double-head screw rod 82, and the lower end is hinged to the foot pad 84 through the front and back lower rotating shaft;The foot pad 84 is in abutment with the tunnel.

[0016] Specifically, the length of the first and second sub-approach bridges 11 and 12 in the utility model embodiment is 11-14m, the length of the third sub-approach bridge 13 is 15-18m, the length of the fourth sub-approach bridge 14 is 5-8m, and the length of the cusp section 15 is 3.2-4.2m.

[0017] On the other hand, the utility model embodiment also provides a tunnel lining trolley, which comprises a trolley and two self-walking approach bridges as described above, and the two self-walking approach bridges are respectively arranged at the front and rear ends of the trolley and are respectively arranged obliquely upwards from front to back and from back to front.

[0018] The beneficial effect brought by the technical scheme provided by the embodiment of the utility model is: the embodiment of the utility model provides a tunnel lining trolley and a self-walking approach bridge, satisfies the safe passing of track transport vehicles from the inside of construction equipment, simultaneously changes the original integral moving scheme into a split moving scheme, the flexibility of moving is higher, the efficiency is higher, the hydraulic drive system of the lining trolley is relieved, and the split moving scheme is also lower in overall manufacturing cost. Different schemes are adopted for different sections: the walking part is installed in the middle of the first and second sub approach bridges of the approach bridge framework, the walking part installed in the first sub approach bridge is higher than the height of the second sub approach bridge, and the extension adjustment range in height is also higher. One extension support rod is installed on the two sides of the first sub approach bridge respectively, stability when the vehicle formation is running on the track is guaranteed. The fourth sub approach bridge is replaced by a steel plate instead of a steel rail, and is connected with the frog end through the two side clamps and bolts, the frog section is attached to the normal running track, and the specific role is to guide the vehicle formation to pass through the frog section, enter the approach bridge and go up to the lining trolley passage position. After passing through the trolley, the vehicle formation goes down to the normal track through the approach bridge. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the side view of the first sub approach bridge;

[0020] Figure 2 It is the top view of the first sub approach bridge;

[0021] Figure 3 It is the front view of the first sub approach bridge;

[0022] Figure 4 It is the side view of the second sub approach bridge;

[0023] Figure 5 It is the top view of the second sub approach bridge;

[0024] Figure 6 It is the side view of the third sub approach bridge;

[0025] Figure 7 It is the top view of the third sub approach bridge;

[0026] Figure 8 It is the front view of the third sub approach bridge;

[0027] Figure 9 It is the side view of the third sub approach bridge;

[0028] Figure 10 It is the top view of the third sub approach bridge;

[0029] Figure 11 It is the front view of the third sub approach bridge;

[0030] Figure 12 It is the side view of the third sub approach bridge;

[0031] Figure 13 is a top view of the third sub-bridge;

[0032] Figure 14 is a front view of the third sub-bridge;

[0033] Figure 15 is a front view of the walking part;

[0034] Figure 16 is a top view of the walking part;

[0035] Figure 17 is a side view of the walking part;

[0036] Figure 18 is a structural schematic view of the telescopic support assembly.

[0037] In the figure: 1 frame, 2 bridge track, 3 pulley assembly, 4 connecting part, 5 stand, 6 slide, 7 walking part, 8 telescopic support assembly, 9 screw lifting structure;

[0038] 11 first sub-bridge, 12 second sub-bridge, 13 third sub-bridge, 14 fourth sub-bridge, 15 turnout section;

[0039] 21 hinged part, 22 fishplate, 23 connecting plate, 24 track support rod;

[0040] 41 side plate, 42 second cross beam;

[0041] 51 angle guide rail, 52 first cross beam, 53 channel steel;

[0042] 71 slide, 72 wheel pair, 73 speed reducer, 74 bearing seat, 75 chain, 76 sprocket;

[0043] 81 upper leg, 82 double-headed screw, 83 lower leg, 84 pad foot. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in further detail below in combination with the drawings.

[0045] Example 1

[0046] Referring to Figures 1-18 , example 1 provides a self-walking bridge. The self-walking bridge is arranged obliquely downward from front to back, the front end of the self-walking bridge is provided with a connecting part 4, the connecting part 4 is composed of a plurality of sub-bridges (the number of sub-bridges is determined according to the inclination angle, length and sub-bridge, etc.) and a turnout section 15 arranged in front and back.

[0047] The sub-approach bridge comprises a frame 1 and an approach track 2 and a pulley assembly 3 arranged obliquely from front to back, and the number of the approach track 2 is two; the two approach tracks 2 are arranged side by side on the left and right sides of the frame 1 and are arranged obliquely from front to back on the upper side of the left and right frame edges or the upper side of the side plate 41 on the corresponding side; the two adjacent approach tracks 2 are detachably connected and aligned, and the two adjacent frames 1 are hinged to enable curve driving; the bottom of each sub-approach bridge is provided with two pulley assemblies 3 arranged side by side from front to back; the bottom of the front one or more sub-approach bridges is provided with a walking part 7 capable of walking on the tunnel track, and the walking part 7 is arranged in the middle of the sub-approach bridge; the left and right sides of the front one or more sub-approach bridges are provided with telescopic support assemblies 8 (the telescopic support assemblies 8 on the two sides can be symmetrically arranged); the frog section 15 is fixed on the last sub-approach bridge and comprises two angle guide rails 51 arranged side by side; the angle guide rail 51 is used for realizing the transition between the approach track 2 and the corresponding tunnel track and is arranged on the corresponding tunnel track through the downwardly open channel steel 53 and realizes the self-walking and fixing of the rear part of the approach bridge in the left-right direction at the same time; and the approach track 2 and the angle guide rail 51 on the same side form a track.

[0048] The frog section 15 comprises two angle guide rails 51, two first cross beams 52 and four channel steels 53. Figures 12-14 The frog section 15 comprises two angle guide rails 51, two first cross beams 52 and four channel steels 53.

[0049] The frog section 15 comprises two angle guide rails 51, two first cross beams 52 and four channel steels 53. Figures 15-17The walking part 7 in the embodiment of the utility model includes slide base 71, two chains 75, two wheel pairs 72, speed reducer 73 (connects with power supply equipment through power line), bearing seat 74 and two sprocket wheels 76 etc.. The slide base 71 is slidably arranged on the slide frame 6, and the left and right sides thereof are connected with the corresponding sides of the framework 1 respectively, and the slide base 71 is arranged along the front and back direction. The two wheel pairs 72 are arranged side by side in front and back, and the wheel pairs 72 are arranged on the bottom of the slide base 71. The wheel pairs 72 are arranged along the left and right direction, and the wheel pairs 72 are slidably arranged on the tunnel track. The speed reducer 73 and the bearing seat 74 are arranged side by side in left and right on the slide base 71, and the speed reducer 73 and the bearing seat 74 are all located above the wheel pairs 72. The output shaft of the speed reducer 73 is arranged along the left and right direction, and the end of the output shaft is rotatably arranged on the bearing seat 74. The two sprocket wheels 76 are arranged side by side in left and right, and the sprocket wheels 76 are coaxially arranged on the output shaft, and the two sprocket wheels 76 are drivingly connected with the two wheel pairs 72 (the wheel shafts of the wheel pairs 72 are provided with sprocket wheels in the middle) through the two chains 75 respectively.

[0050] Wherein, see Figure 18 The telescopic support assembly 8 in the embodiment of the utility model is arranged obliquely along the left and right direction, and the telescopic support assembly 8 is arranged obliquely from bottom to top to the framework 1. The telescopic support assembly 8 sequentially includes upper supporting leg 81, double-headed screw rod 82, lower supporting leg 83 and foot pad 84 from top to bottom. The upper end of the upper supporting leg 81 is hingedly connected with the corresponding side of the framework 1 through the front and back upper rotating shaft, the lower end of the upper supporting leg 81 is threaded sleeve and is threadedly connected with the upper part of the double-headed screw rod 82, and the upper supporting leg 81 is relatively long. The upper end of the lower supporting leg 83 is threaded sleeve and is threadedly connected with the lower part of the double-headed screw rod 82, and the lower end of the lower supporting leg 83 is hingedly connected with the foot pad 84 through the front and back lower rotating shaft, and the lower supporting leg 83 is relatively short. The foot pad 84 is abutted on the tunnel, and the foot pad 84 includes a pad plate and a hinged seat on the upper side of the pad plate. The total length of the double-headed screw rod 82 is rotated to be lengthened or shortened.

[0051] Embodiment 2

[0052] See Figures 1-14, embodiment 2 provides a self-walking guide bridge, which has substantially the same structure as that of embodiment 1, and the difference is that the number of sub-guide bridges in the embodiment is four, and the sub-guide bridges are numbered from front to back as follows: the first sub-guide bridge 11, the second sub-guide bridge 12, the third sub-guide bridge 13, and the fourth sub-guide bridge 14. Only the bottom of the first sub-guide bridge 11 and the second sub-guide bridge 12 is provided with a walking part 7, and only the first sub-guide bridge 11 is provided with an extension support assembly 8. The pulley assembly 3 of the first sub-guide bridge 11 and the second sub-guide bridge 12 each includes two pulleys arranged side by side in front and back. The pulley assembly 3 of the front part of the third sub-guide bridge 13 includes two pulleys arranged side by side in front and back, and the pulley assembly 3 of the rear part of the third sub-guide bridge 13 is provided with only one pulley. The pulley assembly 3 of the fourth sub-guide bridge 14 is provided with only one pulley. The pulley assembly 3 of the first sub-guide bridge 11 is fixed to the bottom of the frame 1 through two vertical columns 5 (vertically arranged) arranged side by side in front and back. The pulley assembly 3 of the front part of the second sub-guide bridge 12 is fixed to the bottom of the frame 1 through two vertical columns 5 arranged side by side in front and back, and the pulley assembly 3 of the rear part of the second sub-guide bridge 12 is directly fixed to the bottom of the frame 1. The pulley assembly 3 of the third sub-guide bridge 13 (the front pulley assembly 3 is arranged on the pulley seat, and the rear pulley assembly 3 is directly arranged on the frame 1) and the fourth sub-guide bridge 14 (the pulley assembly 3 is directly arranged on the frame 1) is directly fixed to the bottom of the frame 1.

[0053] Wherein, referring to Figures 1-14 , the connecting part 4 in the embodiment of the utility model includes two horizontal hinge seats arranged side by side left and right, and the horizontal hinge seat is connected with the corresponding end of the trolley through the horizontal bolt left and right. The rear end of the first sub-guide bridge 11, the front and rear ends of the second sub-guide bridge 12, the front and rear ends of the third sub-guide bridge 13 and the front end of the fourth sub-guide bridge 14 are each provided with a hinge part 21, and the hinge parts 21 of the adjacent two sub-guide bridges are hinged through the vertical vertical bolt. The front end of the angle guide rail 51 is fixedly connected with the rear end of the guide rail 2 of the fourth sub-guide bridge 14 to realize the connection between the turnout segment 15 and the fourth sub-guide bridge 14.

[0054] Referring to Figures 1-14The frame 1 of the first sub-approach bridge 11, the second sub-approach bridge 12 and the third sub-approach bridge 13 is a rectangular frame arranged along the front-to-back direction (a plurality of third cross beams are arranged side by side in front of and behind the frame). The frame 1 of the fourth sub-approach bridge 14 comprises two side plates 41 arranged side by side and a plurality of second cross beams 42 therebetween, and the two side plates 41 are located directly above the two tunnel slide rails. The side plate 41 is arranged along the front-to-back direction, and the upper side of the side plate 41 is arranged obliquely downward from front to back, the upper end of the side plate 41 protrudes upward relative to the second cross beam 42 to serve as an approach rail 2, and the bottom of the side plate 41 is provided with two pulley assemblies 3 arranged side by side in front of and behind the side plate 41, which is a right-angled trapezoidal plate, and specifically a 70mm-thick steel plate. The plurality of second cross beams 42 are arranged side by side in front of and behind the plurality of second cross beams 42 and are arranged along the left-to-right direction, and the front end of the second cross beam 42 is provided with a hinge part 21. The approach rails 2 of the first sub-approach bridge 11, the second sub-approach bridge 12 and the third sub-approach bridge 13 are connected through a fish plate 22, and the front end of the side plate 41 and the rear end of the approach rail 2 of the fourth sub-approach bridge 14 and the rear end of the side plate 41 and the front end of the corner guide rail 51 are connected through a connecting plate 23 (specifically two rectangular plates arranged side by side).

[0055] Preferably, a track support rod 24 is arranged between the two approach rails 2 along the left-to-right direction to ensure stability.

[0056] Embodiment 3

[0057] Embodiment 3 provides a self-walking approach bridge, which has basically the same structure as that of Embodiment 1, and the difference lies in that the walking part 7 in the embodiment is arranged on the bottom of the frame 1 in a lifting manner. The bottom of the frame 1 is provided with a sliding frame 6 (which is a conventional structure, specifically a sliding groove arranged vertically and open outward, which cooperates with the walking part 7) in the vertical direction, the walking part 7 is slidingly arranged on the sliding frame 6, and two screw lifting structures 9 are arranged between the left and right sides of the walking part 7 and the corresponding sides of the frame 1, and the two screw lifting structures 9 on the same side are arranged side by side in front of and behind the two screw lifting structures 9 and are arranged vertically. The left and right sides of the sliding seat 71 are connected with the lower ends of the screw lifting structures 9 on the corresponding sides. When the first sub-approach bridge 11 and the second sub-approach bridge 12 walk, the screw lifting structures 9 are lifted, the corresponding pulley assemblies 3 are away from the tunnel rail and are suspended, the weight of the front part of the self-walking approach bridge is supported by the two walking parts 7, then the force between the walking part 7 and the tunnel rail is increased, and slipping is avoided; at this time, the front part of the third sub-approach bridge 13 is lifted, and the pulley assembly 3 in the front part is away from the tunnel rail and is suspended. That is, the screw lifting structure 9 is lifted, the weight of the whole set of components falls on the walking part 7, and the axle load is increased.

[0058] Embodiment 4

[0059] Embodiment 4 provides a self-walking bridge, which has substantially the same structure as that of Embodiment 2, except that the lengths of the first and second sub-bridges 11 and 12 are 11-14 m, the length of the third sub-bridge 13 is 15-18 m, the length of the fourth sub-bridge 14 is 5-8 m, and the length of the frog section 15 is 3.2-4.2 m. The inclination angle of the bridge is 1.5-3.0°.

[0060] Embodiment 5

[0061] Embodiment 5 provides a self-walking bridge, which has substantially the same structure as that of Embodiment 2, except that the lengths of the first and second sub-bridges 11 and 12 are 12.5 m, the length of the third sub-bridge 13 is 16.6 m, the length of the fourth sub-bridge 14 is 6.7 m, and the length of the frog section 15 is 3.7 m. The inclination angle of the bridge is 2.11°.

[0062] Embodiment 6

[0063] Embodiment 6 provides a tunnel lining trolley, which comprises a trolley and two self-walking bridges of Embodiments 1-5, etc. The two self-walking bridges are respectively arranged at the front and rear ends of the trolley (connected by the connecting part 4) and are respectively arranged obliquely upward from front to back and obliquely upward from back to front. The bridge tracks 2 of the self-walking bridges are connected with the corresponding ends of the tracks on the upper part of the trolley.

[0064] The above merely provides preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A self-walking bridge, which is arranged obliquely downward from front to back and has a connecting part (4) at the front end; characterized in that, The self-walking approach bridge is composed of multiple sub-approach bridges and a turnout segment (15) which is connected to the last sub-approach bridge, the sub-approach bridge comprises an inclined framework (1), an approach rail (2) and a pulley assembly (3) on the framework (1), two adjacent approach rails (2) are detachably connected and aligned, two adjacent frameworks (1) are hinged, the bottom of each sub-approach bridge is provided with two pulley assemblies (3) side by side, the bottom of one or more front sub-approach bridges is provided with a walking part (7) which can walk on the tunnel rail, the left and right sides of one or more front sub-approach bridges are provided with telescopic support assemblies (8), the turnout segment (15) is fixed on the last sub-approach bridge and comprises two angle guide rails (51) arranged side by side, the angle guide rail (51) is used to realize the transition between the approach rail (2) and the corresponding tunnel rail and is slidably arranged on the corresponding tunnel rail through a downwardly open channel steel (53).

2. The self-guiding bridge of claim 1, wherein, The turnout segment (15) comprises two angle guide rails (51) arranged side by side, a first cross beam (52) between the two angle guide rails (51) and a channel steel (53) at the bottom of the angle guide rail (51) and matched with the tunnel rail, the rear end of the approach rail (2) of the last sub-approach bridge is detachably connected and aligned with the front end of the angle guide rail (51), the angle guide rail (51) is arranged in the front-rear direction, the upper side thereof is arranged obliquely downward from front to rear, and the rear end thereof is overlapped on the corresponding tunnel rail, the channel steel (53) is arranged in the front-rear direction and is buckled on the corresponding tunnel rail and can slide on the tunnel rail.

3. The self-guiding bridge of claim 2, wherein, The number of the sub-approach bridges is four, which are sequentially numbered from front to rear as the first sub-approach bridge (11), the second sub-approach bridge (12), the third sub-approach bridge (13) and the fourth sub-approach bridge (14); Only the bottom of the first sub-approach bridge (11) and the second sub-approach bridge (12) is provided with a walking part (7), only the first sub-approach bridge (11) is provided with a telescopic support assembly (8), and the walking part (7) is arranged in the middle of the sub-approach bridge; The pulley assembly (3) of the first sub-approach bridge (11) and the second sub-approach bridge (12) each comprises two pulleys arranged side by side, the pulley assembly (3) of the front part of the third sub-approach bridge (13) comprises two pulleys arranged side by side, the pulley assembly (3) of the rear part of the third sub-approach bridge (13) comprises only one pulley, and the pulley assembly (3) of the fourth sub-approach bridge (14) comprises only one pulley; The pulley assembly (3) of the first sub-approach bridge (11) is fixed to the bottom of the framework (1) through two vertical columns (5) arranged side by side, the pulley assembly (3) of the front part of the second sub-approach bridge (12) is fixed to the bottom of the framework (1) through two vertical columns (5) arranged side by side, the pulley assembly (3) of the rear part of the second sub-approach bridge (12) is directly fixed to the bottom of the framework (1), and the pulley assemblies (3) of the third sub-approach bridge (13) and the fourth sub-approach bridge (14) are directly fixed to the bottom of the framework (1).

4. The self-guiding bridge of claim 3, wherein, The connecting part (4) comprises two horizontal hinge seats arranged side by side, and the horizontal hinge seats are connected to the corresponding ends of the trolley through horizontal bolts in the left-right direction. The rear end of the first sub-bridge (11), the front and rear ends of the second sub-bridge (12), the front and rear ends of the third sub-bridge (13) and the front end of the fourth sub-bridge (14) are provided with hinge parts (21), and the hinge parts (21) of adjacent two sub-bridges are connected through vertical vertical pins; the front end of the angle guide rail (51) is fixedly connected with the rear end of the bridge rail (2) of the fourth sub-bridge (14) to realize the connection between the frog section (15) and the fourth sub-bridge (14).

5. The self-guiding bridge of claim 4, wherein, The frames (1) of the first sub-bridge (11), the second sub-bridge (12) and the third sub-bridge (13) are rectangular frames arranged along the front and rear directions; The frame (1) of the fourth sub-bridge (14) comprises two side plates (41) arranged side by side and a plurality of second cross beams (42) therebetween, and the two side plates (41) are located directly above the two tunnel slide rails; the side plate (41) is arranged along the front and rear directions, and the upper side is arranged obliquely downward from front to rear, the upper end is protruded upward relative to the second cross beam (42) to serve as a bridge rail (2), and two pulley assemblies (3) are arranged side by side at the bottom; the plurality of second cross beams (42) are arranged side by side and arranged along the left and right directions, and the front end of the second cross beam (42) is provided with a hinge part (21); the bridge rails (2) of the first sub-bridge (11), the second sub-bridge (12) and the third sub-bridge (13) are connected through a fish plate (22), and the front end of the side plate (41) and the rear end of the bridge rail (2) of the fourth sub-bridge (14) are connected through a connecting plate (23); The front and rear parts of the angle guide rail (51) are each provided with a channel steel (53), the number of the first cross beams (52) is two and they are arranged along the left and right directions, and the two first cross beams (52) are arranged at the front part and the middle part of the frog section (15) respectively, and the width of the first cross beam (52) in the middle part is greater than that of the first cross beam (52) in the front part.

6. The self-guiding bridge of claim 5, wherein, The walking part (7) is arranged on the bottom of the frame (1) in a lifting manner; the bottom of the frame (1) is provided with a sliding frame (6) matched with the walking part (7) in the vertical direction, the walking part (7) is slidingly arranged on the sliding frame (6), and two screw rod lifting structures (9) are arranged between the left and right sides of the walking part (7) and the corresponding sides of the frame (1), and the two screw rod lifting structures (9) on the same side are arranged side by side and vertically.

7. The self-guiding bridge of claim 6, wherein, The walking part (7) comprises a sliding base (71), two chains (75), two wheel pairs (72) arranged side by side in front and back at the bottom of the sliding base (71), a speed reducer (73) on the sliding base (71), a bearing seat (74) on the sliding base (71), and two sprocket wheels (76) arranged side by side in left and right on the output shaft of the speed reducer (73), the sliding base (71) is slidably arranged on the sliding frame (6) and connected to the lower end of the corresponding side screw lifting structure (9) on the left and right sides, the wheel pairs (72) are arranged in left and right directions and slidably arranged on the tunnel track, the speed reducer (73) and the bearing seat (74) are arranged side by side in left and right directions and both are above the wheel pairs (72), the output shaft is arranged in left and right directions and the end is rotatably arranged on the bearing seat (74), and the two sprocket wheels (76) are respectively connected with the two wheel pairs (72) through the two chains (75).

8. The self-guiding bridge of claim 1, wherein, The telescopic support assembly (8) is inclined in left and right directions and arranged from bottom to top to the framework (1); the telescopic support assembly (8) comprises, from top to bottom, an upper support leg (81), a double-headed screw (82), a lower support leg (83), and a foot pad (84); the upper end of the upper support leg (81) is hingedly connected to the corresponding side of the framework (1) through a front and back upper rotating shaft, and the lower end is a threaded sleeve and is threadedly connected to the upper part of the double-headed screw (82); the upper end of the lower support leg (83) is a threaded sleeve and is threadedly connected to the lower part of the double-headed screw (82), and the lower end is hingedly connected to the foot pad (84) through a front and back lower rotating shaft; the foot pad (84) abuts against the tunnel.

9. The self-guiding bridge of claim 3, wherein, The length of the first sub-approach bridge (11) and the second sub-approach bridge (12) is 11-14m, the length of the third sub-approach bridge (13) is 15-18m, the length of the fourth sub-approach bridge (14) is 5-8m, and the length of the frog section (15) is 3.2-4.2m.

10. A tunnel lining trolley, characterized in that The trolley and two self-walking approach bridges according to any one of claims 1-9 are arranged at the front and rear ends of the trolley respectively and are arranged from front to back and from back to front respectively.

Images