A kind of emergency fast obstacle crossing bridge and its erection method

Abstract

The present invention provides an emergency rapid obstacle-crossing bridge and its erection method, which can overcome the three-dimensional obstacles above the ground, and quickly erect a bridge passage in the absence of an equipment passage to ensure the passage of wheeled vehicles, engineering machinery and other equipment; a crawler erection vehicle is used to complete the erection and withdrawal operations, and the erection efficiency is high; and during the erection process, the erection process is safe and reliable based on the pulling of the bridge wire rope. The emergency rapid obstacle-crossing bridge includes: a chassis vehicle and a bridge unit arranged on the chassis vehicle; the bridge unit includes: an end springboard, a separated bridge, a rear springboard, a top support frame, a truss bridge, an erection frame, a tongue-shaped arm and a bridge pulling mechanism; the bridge pulling mechanism is used to pull the separated bridge through the bridge pulling wire rope during the erection or withdrawal of the separated bridge.

Description

Technical Field

[0001] The invention relates to an obstacle-crossing bridge, in particular to an emergency fast obstacle-crossing bridge and an erection method thereof, and belongs to the technical field of mechanized bridges. Background Art

[0002] In some special scenarios (such as oil storage areas in the petrochemical industry), considering the requirements of fire prevention, fully enclosed fire barriers are set up around the outside, and there is no direct access for vehicles and other equipment to enter the area. The fire barrier barriers have a certain height. When an emergency occurs in the area, repair vehicles cannot quickly cross these obstacles, which seriously affects the repair time; and in an emergency, time is of the essence; how to set up in a very short time to quickly provide a channel for rescue teams and material transportation is also very important.

[0003] Therefore, there is a need for an obstacle bridge that can overcome three-dimensional obstacles on the ground and can be quickly and safely erected to ensure that people and vehicles can safely and quickly pass through these obstacles. Summary of the invention

[0004] In view of this, the present invention provides an emergency rapid obstacle-crossing bridge, which can overcome three-dimensional obstacles above the ground and quickly build a bridge channel in the absence of an equipment channel to ensure the passage of wheeled vehicles, engineering machinery and other equipment; a crawler erection vehicle is used to complete the erection and withdrawal operations, and the erection efficiency is high; and during the erection process, the bridge wire rope is pulled to ensure that the erection process is safe and reliable.

[0005] The technical solution of the present invention is: an emergency rapid obstacle crossing bridge, comprising: a chassis vehicle and a bridge unit arranged on the chassis vehicle;

[0006] The bridge unit includes: an end springboard, a separated bridge, a rear springboard, a top support frame, a truss bridge, an erection frame, a tongue-shaped arm and a bridge pulling mechanism;

[0007] The end springboard is pin-connected to one end of the separated bridge;

[0008] The other end of the separated bridge is connected to and separated from the truss bridge through a tongue-shaped arm;

[0009] The tail ramp is pin-connected to the truss bridge and can be folded and unfolded relative to the truss bridge;

[0010] The supporting frame is used to support the rear springboard so that it can be turned upward and outward relative to the truss bridge;

[0011] The truss bridge comprises a fixed bridge body and a flip bridge body; the fixed bridge body is fixedly connected to the chassis, one end of the flip bridge body is butted with the fixed bridge body, and the other end is pin-connected with the chassis; the flip bridge body can flip around the pin connection, so that the flip bridge body can be stacked on the chassis or flipped to the front end to touch the ground;

[0012] One end of the erection frame is pin-connected to the flip bridge body, and the other end is used to cooperate with the separated bridge to push the separated bridge to flip;

[0013] The bridge pulling mechanism is used to pull the separate bridge through the bridge pulling wire rope during the process of erecting or withdrawing the separate bridge.

[0014] As a preferred embodiment of the present invention, the bridge pulling mechanism comprises: a pulley frame arranged on a separated bridge, a wire rope supporting wheel arranged at the end of the erection frame, a bridge pulling winch arranged on a truss bridge, and a bridge pulling wire rope wound on the bridge pulling winch; the free end of the bridge pulling wire rope is connected to a pulley assembly A of the pulley frame;

[0015] As a preferred embodiment of the present invention: a springboard pulling mechanism is provided between the tail springboard and the top support frame;

[0016] The springboard pulling mechanism includes a pulley assembly B arranged in the middle of the rear springboard and a springboard winch arranged in the middle of the connection end between the rear springboard and the truss bridge; the springboard wire rope is wound around the springboard winch, and the free end passes around the pulley assembly B and is connected to the wire rope connecting ear on the middle crossbeam of the top support frame.

[0017] As a preferred embodiment of the present invention: the separated bridge comprises: a middle bridge section and end bridge sections pinned to both ends of the middle bridge section;

[0018] The end bridge section can be folded and unfolded relative to the middle bridge section under the action of the bridge unfolding mechanism;

[0019] The surface of the end bridge section is provided with a slide groove, and the transverse latch roller on the erection frame can slide in the slide groove to realize the action of retracting and extending the bridge.

[0020] As a preferred embodiment of the present invention: the tilting bridge body is provided with a tilting cylinder, a setting frame cylinder, a bridge pulling winch and a front end support leg;

[0021] One end of the flip bridge body is butted against the fixed bridge body and locked by a fastening pin;

[0022] One end of the tilting oil cylinder is pin-connected to the chassis, and the other end is connected to the double-ear plate of the middle cross beam of the tilting bridge body, so as to push the tilting bridge body to tilt around the pin connection between the tilting oil cylinder and the chassis after the fastening pin is released;

[0023] One end of the oil cylinder of the erection frame is pin-connected to the flip bridge body, and the other end is connected to the erection frame, so as to promote the flipping movement of the erection frame;

[0024] A bridge-pulling winch is provided at the front end of the flip bridge body, and a bridge-pulling wire rope is wound around the bridge-pulling winch. The bridge-pulling wire rope passes over the pulley on the pulley frame at the rear end of the flip bridge body and is connected to the pulley assembly A of the pulley frame on the separated bridge;

[0025] The flip bridge body is also provided with a tongue-shaped arm seat for pinning the tongue-shaped arm;

[0026] Two front supporting legs are also arranged under the front wheel track of the flip bridge body, which are used to support the ground when the axle is separated and erected.

[0027] As a preferred embodiment of the present invention: a connecting ear is provided at one end of the tongue-shaped arm for pin-connecting with the tongue-shaped arm seat on the flip bridge body; and a lifting ear is provided at the other end for connecting to the pulley frame.

[0028] In addition, the present invention also provides a method for erecting an emergency rapid obstacle-crossing bridge, when the vehicle-bridge is used in an integrated manner:

[0029] S101: The bridge unit is folded on the chassis, and the chassis is driven to the erection position, so that the bulldozer on the front side of the chassis is extended to touch the ground for support;

[0030] S102: Expand the erection rack:

[0031] Control the erection frame oil cylinder to flip the separated bridge upward and push it up to a vertical state; at this time, the bridge-pulling wire rope pulls the separated bridge; after the separated bridge reaches the vertical state, the bridge-pulling wire rope is straightened;

[0032] S103: Deploy the rear ramp:

[0033] Control the action of the top support frame cylinder, and use the top support frame to flip the tail springboard to a vertical state; when the tail springboard passes the vertical position, it presses on the springboard wire rope, and then controls the springboard winch to release the springboard wire rope, and the tail springboard slowly flips down to a horizontal position under the action of gravity;

[0034] S104: Controlling the end bridge section at the far end of the separated bridge to be deployed to a vertical position;

[0035] S105: disengage the bridge lock; release the bridge pulling wire rope, and slowly lower the separated bridge; at the same time, control the end bridge section at the far end to slowly unfold, unfold the separated bridge and slowly lower it to the ground inside the ground obstacle;

[0036] S106: Release the springboard wire rope, and the rear springboard slowly turns over and falls to the ground under the action of gravity;

[0037] S107: retract the top support frame to the inner side of the fixed bridge body, and retract the erection frame to the inner side of the flip bridge body;

[0038] S108: Lower the rear support leg below the fixed bridge body so that the rear support leg touches the ground for support; at this time, a bridge with a vehicle and axle integrated is formed.

[0039] In addition, the present invention provides another method for erecting an emergency rapid obstacle-crossing bridge, when the vehicle bridge is separated for use, the end springboard is first removed;

[0040] S301: the bridge unit is folded on the chassis, and the chassis is driven to the erection position, so that the bulldozer on the front side of the chassis is extended to touch the ground for support;

[0041] S303: Control the turning oil cylinder to push the turning bridge body to swing upward and rotate. When the leg stop oil cylinder on the turning bridge body is perpendicular to the horizontal ground, stop pushing the turning bridge body; place a leg stop pad under the leg stop oil cylinder, control the leg stop to extend to touch the ground support, adjust the leg stop extension height, and level both sides of the vehicle body;

[0042] S304: the hydraulic cylinder of the top support frame is actuated to make the top support frame flip the rear springboard to a vertical state; when the rear springboard passes the vertical position, it is pressed on the springboard wire rope, and then the springboard wire rope is released, and the rear springboard is slowly flipped down to a horizontal position under the action of gravity;

[0043] S305: starting the erection frame oil cylinder to enable the erection frame to push the separated bridge to a vertical state; during this process, the bridge pulling wire rope pulls the separated bridge; after the separated bridge reaches the vertical state, the bridge pulling winch is controlled to straighten the bridge pulling wire rope;

[0044] S306: The bridge erection and locking cylinder drives the roller to disengage from the end bridge section slideway; the bridge pulling winch is controlled to release the bridge pulling wire rope, and the separated bridge is slowly lowered. At the same time, the far end bridge section is unfolded, and the bridge is unfolded and slowly lowered to the ground on the opposite bank;

[0045] S307: Disconnect the quick connector between the tongue-shaped arm and the split bridge;

[0046] S308: removing the pulley frame from the separated bridge, connecting the pulley frame to the tongue-shaped arm, and controlling the bridge-pulling winch to tighten the bridge-pulling wire rope;

[0047] S309: Retract the rear latches on both sides of the tongue-shaped arm; control the bridge-pulling winch to slowly release the bridge-pulling wire rope until the bridge section at the end falls to the ground; retract the front latch of the tongue-shaped arm. After the front / rear latches of the tongue-shaped arm are retracted into place, control the bridge-pulling winch to pull up the tongue-shaped arm through the bridge-pulling wire rope, so that the tongue-shaped arm leaves the separated bridge, and continue to retract the bridge-pulling wire rope until the tongue-shaped arm is tightened;

[0048] S310: Use the springboard winch to pull up the rear springboard until it rests on the roller of the top support frame, then use the top support frame to cooperate with the springboard winch to pull up the rear springboard until it falls onto the fixed bridge body, and immediately stop the action; control the action of the flipping cylinder to retract the flipping bridge body onto the chassis vehicle; retract the bulldozer and the erection vehicle to evacuate, thereby completing the bridge erection.

[0049] Beneficial effects:

[0050] (1) The emergency rapid obstacle-crossing bridge of the present invention can overcome three-dimensional obstacles above the ground. In the absence of equipment passages, the bridge passage can be quickly erected to ensure the passage of wheeled vehicles, engineering machinery and other equipment. The crawler erection vehicle is used to complete the erection and removal operations, and the erection efficiency is high.

[0051] (2) During the erection process of the emergency rapid obstacle-crossing bridge of the present invention, an erection frame and a bridge-pulling mechanism are used in coordination, and the pulling of the bridge-pulling wire rope on the separated bridge is used to ensure that the erection and withdrawal processes are safe, controllable and reliable.

[0052] (3) In the emergency rapid obstacle crossing bridge of the present invention, a springboard pulling mechanism based on a steel wire rope is also provided between the rear springboard and the top support frame to ensure that the deployment and withdrawal of the rear springboard are safe, controllable and reliable.

[0053] (4) The emergency rapid obstacle crossing bridge of the present invention is a detachable bridge connected to a truss bridge via a tongue-shaped arm, so that the vehicle and bridge can be separated for use, thereby expanding its scope of use.

[0054] (5) During the erection and removal process of the emergency rapid obstacle crossing bridge of the present invention, the safety and controllability of the erection and removal operations are ensured by controlling each oil cylinder and the bridge pulling winch and the gangway winch, and the erection and removal efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the overall structure of the emergency obstacle bridge of the present invention;

[0056] Figure 2 and Figure 3 They are respectively a front view and a top view of the separated bridge of the present invention;

[0057] Figure 4 It is the structural diagram of the end bridge section;

[0058] Figure 5 It is the structural diagram of the middle bridge section;

[0059] Figure 6 It is a schematic diagram of the bridge extension mechanism structure;

[0060] Figure 7 is a schematic diagram of the structure of the top support frame;

[0061] Figure 8 This is a schematic diagram of the structure of the tail springboard;

[0062] Fig. 9 This is a structural diagram of a truss bridge;

[0063] Fig.10 The schematic diagram of the structure of the erection frame is shown below;

[0064] Fig.11 It is a schematic diagram of the structure of the tongue-shaped arm;

[0065] Figure 12-Figure 19 The emergency rapid obstacle-crossing bridge of the present invention is used for the erection process of overcoming obstacles;

[0066] Figure 20-26 The emergency rapid obstacle crossing bridge of the present invention is completed after the obstacle crossing and the withdrawal process;

[0067] Figure 27-Figure 34 The emergency rapid obstacle-crossing bridge of the present invention is used to erect obstacles such as rivers and gullies;

[0068] Figure 35-Figure 40 The emergency rapid obstacle-crossing bridge of the present invention is used for the withdrawal process when crossing obstacles such as rivers and gullies;

[0069] Among them: 1-end springboard;

[0070] 2-separated bridge, 201-end bridge section, 2011-slideway, 2012-baffle A, 2013-connecting frame, 202-middle bridge section, 2021-connecting frame, 2022-cylinder seat, 2023-bridge frame seat, 203-bridge mechanism, 2031-swing rod, 2032-bridge frame, 2033-bridge cylinder;

[0071] 3-rear springboard, 301-pulley assembly B, 302-springboard winch, 303-springboard wire rope, 304-baffle B;

[0072] 4-top support frame, 401-roller, 402-cylinder seat, 403-wire rope connecting ear;

[0073] 5-truss bridge, 501-fixed bridge body, 502-turnable bridge body, 503-rear outrigger, 504-front outrigger, 505-top support frame cylinder, 506-top support frame connecting seat, 509-turnable cylinder, 510-erection frame cylinder, 511-bridge pulling winch, 512-erection frame seat, 513-tongue-shaped arm seat, 514-axle connecting ear;

[0074] 6-erecting frame, 601-wire rope supporting wheel, 602-transverse latch roller, 603-transverse latch cylinder A, 604-turning frame cylinder seat;

[0075] 7-tongue-shaped arm, 701-block, 702-block telescopic cylinder, 703-lateral latch, 704-lateral latch cylinder B;

[0076] 8-bridge pulling mechanism, 801-bridge pulling wire rope, 802-pulley frame, 9-chassis vehicle. DETAILED DESCRIPTION

[0077] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0078] Embodiment 1:

[0079] This embodiment provides an emergency rapid obstacle-crossing bridge, which can not only overcome three-dimensional obstacles on the ground, but also quickly build a bridge channel in the absence of an equipment channel; it can also quickly build an emergency bridge to overcome obstacles such as gullies and rain cracks on the ground; and during the erection process, a bridge pulling wire rope is used to pull the separated bridge to ensure that the erection process is safe and reliable.

[0080] like Figure 1 As shown, the emergency rapid obstacle bridge includes: a chassis vehicle 9 and a bridge unit arranged on the chassis vehicle 9.

[0081] As an example, the chassis 9 uses a crawler chassis for carrying and installing upper equipment (here the bridge unit serves as the upper equipment of the chassis) to provide a power source and a power supply for the equipment.

[0082] The bridge unit comprises: an end springboard 1, a separated bridge 2, a rear springboard 3, a top support frame 4, a truss bridge 5, an erection frame 6, a tongue-shaped arm 7 and a bridge pulling mechanism 8.

[0083] The bridge-pulling mechanism 8 is used to pull the separated bridge 2 through the bridge-pulling wire rope 801 during the erection or withdrawal process, so as to ensure that the bridge erection process is safe and controllable; the bridge-pulling mechanism 8 includes a pulley frame 802 (arranged on the separated bridge 2 or the tongue-shaped arm 7 as needed), a wire rope support wheel 601 arranged on the erection frame 6, a bridge-pulling winch 511 arranged on the truss bridge 5, and a bridge-pulling wire rope 801 wound around the bridge-pulling winch 511; the free end of the bridge-pulling wire rope 802 is connected to the pulley assembly A of the pulley frame 802.

[0084] The end gangway 1 is an integral box-type structure, one end of which is pin-connected to the end of the separated bridge 2, and the other end is connected to a base plate.

[0085] The separated bridge 2 can be connected and separated from the truss bridge 5 according to the use requirements; Figure 2 and Figure 3As shown, the separated bridge 2 includes: a middle bridge section 202 in the middle and end bridge sections 201 pinned at both ends of the middle bridge section 202; the ends of the two end bridge sections 201 are pinned to the two ends of the middle bridge section 202, respectively, so that the end bridge sections 201 can be folded and unfolded relative to the middle bridge section 202. The other end of one of the end bridge sections 201 is pinned to the end springboard 1, and the other end of the other end bridge section 201 is connected to the truss bridge 5 through the tongue-shaped arm 7. The pinned joints of the two end bridge sections 201 and the middle bridge section 202 are provided with a bridge unfolding mechanism 203, which is used to realize the folding and unfolding of the end bridge sections 201 relative to the middle bridge section 202.

[0086] As an example, the bridge deck of the separated bridge 2 is welded with anti-skid strips to prevent the tires or tracks of the vehicle from slipping when the vehicle is traveling on the bridge, thereby affecting the passage of the vehicle.

[0087] like Figure 4 As shown, a slide groove 2011 is provided on the surface of the end bridge section 201, and the horizontal latch roller 602 on the erection frame 6 slides in the slide groove 2011 to realize the bridge retracting and extending action; a baffle A2012 is welded on the slide groove 2011, and when the bridge span is retracted to a nearly vertical state, the movement of the bridge span is restricted, and the baffle A2012 can prevent the bridge pulling wire rope from being excessively pulled to cause the bridge span to overturn; the connecting frame 2013 arranged under the two ruts of the end bridge section 201 is the connecting seat of the bridge unfolding mechanism 203.

[0088] like Figure 5 As shown, the middle bridge section 202 is a welded rut-type bridge structure; the two ends of the middle bridge section 202 are pinned to the single ears on the corresponding end bridge section 201 through double ears; a connecting frame 2021 is installed in the middle of the bridge span structure of the middle bridge section 202, and a lifting ear is welded on the connecting frame 2021 for connecting the pulley frame 802. Two groups of cylinder seats 2023 (four cylinder seats 2023 in total) are welded below the middle of the ruts on the left and right sides of the middle bridge section 202 for installing the bridge extension cylinder 2033; a group of bridge extension frame seats 2023 (thereby four groups of bridge extension frame seats are provided in total) are welded below the two ends of the left and right ruts for connecting the bridge extension frame 2032.

[0089] The bridge spreading mechanism 203 is arranged below the rut at the connection between the end bridge section 201 and the middle bridge section 202. A set of separated bridges has four sets of bridge spreading mechanisms. The bridge spreading mechanism 203 is used to drive the end bridge section 201 to unfold and fold relative to the middle bridge section 202.

[0090] As an example, Figure 6As shown, the bridge extension mechanism 203 includes: a swing rod 2031, a bridge extension frame 2032 and a bridge extension oil cylinder 2033. One end of the swing rod 2031 is pin-connected with the connecting frame 2013 on the end bridge section 201, and the other end is pin-connected with one end of the bridge extension frame 2032; the upper part of the other end of the bridge extension frame 2032 is pin-connected with the bridge extension frame seat 2023 on the middle bridge section 202, and the lower end is connected to the telescopic end of the bridge extension oil cylinder 2033; the fixed end of the bridge extension oil cylinder 2033 is pin-connected with the oil cylinder seat 2022 on the middle bridge section 202.

[0091] The rear springboard 3 is connected to the truss bridge 5 by single and double ear plate pins. The rear springboard 3 can be folded and unfolded relative to the truss bridge 5, so that the rear springboard 3 can be folded on the surface of the truss bridge 5, or one end of the rear springboard 3 is connected to the truss bridge 5 after unfolding, and the other end touches the ground.

[0092] like Figure 7 As shown, the top support frame 4 is used to support the rear springboard 3 so that it can flip upward and outward relative to the truss bridge 5. The lower end of the top support frame 4 is pin-connected with the truss bridge 5, and the upper end supports the rear springboard 3 through the roller 401 (correspondingly, a baffle B304 for supporting the top support frame roller 401 is provided in the middle of the rear springboard 3); a top support frame cylinder seat 402 is provided in the middle of the top support frame, which is connected to the telescopic end of the top support frame cylinder 505 provided on the truss bridge 5, and the top support frame 4 rotates around the pin connection between it and the truss bridge 5 through the driving of the top support frame cylinder 505.

[0093] As an example, a springboard pulling mechanism based on a steel wire rope is also provided between the rear springboard 3 and the top support frame 4 to ensure the safe deployment of the rear springboard 3. Figure 7 and Figure 8 As shown, the springboard pulling mechanism includes a pulley assembly B301 arranged in the middle of the rear springboard 3, and a springboard winch 302 arranged in the middle of the connecting end of the rear springboard 3 and the truss bridge 5; the springboard wire rope 303 is wound around the springboard winch 302, and the free end passes around the pulley assembly B301 and is connected to the wire rope connecting ear 403 on the middle cross beam of the top support frame 4.

[0094] like Fig. 9 As shown, the truss bridge 5 includes a fixed bridge body 501 and a flip bridge body 502; both the fixed bridge body 501 and the flip bridge body 502 are truss structures. The fixed bridge body 501 is fixedly connected to the chassis 9, and a double ear is provided at its rear end for pinning with the rear springboard 3; a rear leg 503 is provided below the rear of the fixed bridge body 1. One end of the flip bridge body 502 is docked with the fixed bridge body 501, and in the transportation state, the docking point is connected by a fastening pin to fix the position of the flip bridge body 502; the other end of the flip bridge body 502 is pinned with the chassis, and the flip bridge body 502 can flip around the pinned point, so that the flip bridge body 502 can be stacked on the chassis 9 or flipped to the front end to touch the ground.

[0095] A top support frame connecting seat 506 is provided on the fixed bridge body 501 , and a fixed end of a top support frame oil cylinder 505 connected to the top support frame 4 is connected to the top support frame connecting seat 506 .

[0096] The flip bridge body 502 is provided with a flip cylinder 509, a frame cylinder 510, a bridge winch 511, a frame seat 512, a tongue-shaped arm seat 513, a bridge connecting ear 514 and a front leg 504. One end (such as a fixed end) of the flip cylinder 509 is pin-connected with the chassis 9, and the other end (such as a telescopic end) is connected to the double-ear plate of the middle cross beam of the flip bridge body 502, which is used to push the flip bridge body 502 to flip around the pin connection between it and the chassis 9 after the fastening pin is released. The frame cylinder 510 is a driving unit of the frame 6, one end (such as a fixed end) is pin-connected with the flip bridge body 2, and the other end is connected to the frame 6, which is used to push the frame 6 to flip. There are two pairs of double-ear plates on the frame seat 512 provided on the flip bridge body 502 for connecting the frame 6, that is, the frame 6 is pin-connected with the flip bridge body 502. In addition, the flip bridge body 502 is also provided with a tongue-shaped arm seat 512, and two pairs of double-ear plates on the tongue-shaped arm seat 512 are used to pin the tongue-shaped arm 7. The axle connecting ear 514 is the connection point between the flip bridge body 2 and the chassis vehicle 9, and the flip bridge body 2 can rotate around this hinge point. Two front-end legs 504 are also provided under the front wheel track of the flip bridge body 502 to support the ground when the axle is separated and erected.

[0097] A bridge pulling winch 515 is arranged at the front end of the flip bridge body 502, and a bridge pulling wire rope 801 is wound around the bridge pulling winch 515. The bridge pulling wire rope 801 passes around the pulley on the pulley frame at the rear end of the flip bridge body 502 and is connected to the pulley assembly A on the pulley frame 802 of the separated bridge 2.

[0098] like Fig.10 As shown, a wire rope support wheel 601 is provided at one end of the erection frame 6, and the wire rope support wheel 601 is used to support the bridge pulling wire rope 801 during the erection and withdrawal process of the separated bridge 22; a transverse latch cylinder A603 is also provided at this end of the erection frame 6, and the transverse latch roller 602 realizes transverse telescopic movement through the transverse latch cylinder A603, and the transverse latch roller 602 can be inserted into the slide groove 2011 of the end bridge section 201 when extended, and can slide in the slide groove 2011; the erection frame cylinder seat 604 arranged on the erection frame 6 is used to connect the erection frame cylinder 510; the connecting ear at the end of the erection frame 6 is pinned with the double ears of the erection frame seat 512 on the flip bridge body 502.

[0099] One end of the tongue-shaped arm 7 is pin-connected to the flip bridge body 502 , and the other end is detachably connected to the separate bridge 2 , that is, the separate bridge 2 and the truss bridge 5 can be connected and separated by the tongue-shaped arm 7 .

[0100] As an example, Fig.11As shown, one end of the tongue-shaped arm 7 is provided with a connecting ear for pinning with the tongue-shaped arm seat 513 on the flip bridge body 502; the other end is provided with a lifting ear for connecting to the pulley frame (the pulley frame is used to install the pulley assembly A, and is used to retract the tongue-shaped arm 7 during the separation of the vehicle axle).

[0101] The fixed end of the block telescopic cylinder 702 is connected to the tongue-shaped arm 7, and the telescopic end is connected to the block 701. The block 701 can slide on the inner side of the tongue-shaped arm 7 under the drive of the block telescopic cylinder 702. After the block 701 (rear latch) is extended, it is engaged with the connecting pin on the end bridge section 201 of the separated bridge 2. After the block 701 is extended into place, it clamps the connecting pin of the end bridge section 201 to realize the connection between the tongue-shaped arm 7 and the separated bridge 2; the transverse latch 703 (front latch) realizes the transverse telescopic action under the drive of the transverse latch cylinder B704, and the transverse latch 703 is extended and inserted into the guide groove on the end bridge section 201 of the separated bridge 2; thereby, the connection and separation of the tongue-shaped arm 7 and the separated bridge 2 are realized through the above-mentioned block 701 and the transverse latch 703.

[0102] Embodiment 2:

[0103] Based on the emergency rapid obstacle-crossing bridge in the above-mentioned embodiment 1, this embodiment provides a method for setting up and withdrawing the emergency rapid obstacle-crossing bridge when used for crossing obstacles (three-dimensional obstacles on the ground), in which case the vehicle and the bridge are used in an integrated manner.

[0104] 1. During erection:

[0105] S101: The bridge unit is folded on the chassis 9, specifically: the fastening pins between the flip bridge body 502 and the fixed bridge body 501 are firmly connected, the separated bridge 2 and the rear springboard 3 are folded above the truss bridge 5, and the end bridge section 201 at one end of the separated bridge 2 is folded; the top support frame 4, the erection frame 6 and the tongue-shaped arm 7 are all in a folded state; the chassis 9 drives to the erection position (such as the outside of the firewall), so that the bulldozer on the front side of the chassis 9 extends out to touch the ground for support, such as Fig.12 shown.

[0106] S102: Expand and set up frame 6:

[0107] The erection frame oil cylinder 510 is controlled to move, and the separated bridge 2 is flipped upward and pushed up to a vertical state under the action of the erection frame 6 (the state judgment method: a virtual line is drawn vertically upward along the connection point between the tongue-shaped arm 7 and the flip bridge body 502, and the upper end of the middle bridge section 202 is completely on the right side of this virtual line); at this time, the bridge wire rope 801 pulls the separated bridge 2 (the bridge wire rope 801 is connected to the pulley assembly A on the pulley frame 802 provided on the middle bridge section 202); the state of the bridge wire rope 801 is observed to ensure that the bridge wire rope 801 is in a relaxed state (if the bridge wire rope 801 is tightened, the bridge winch 511 can be controlled to cooperate in releasing the bridge wire rope 801); after the separated bridge 2 reaches the vertical state, the bridge winch 511 is controlled to straighten the bridge wire rope 801, such as Fig.13 shown.

[0108] S103: Deploy the rear springboard 3:

[0109] The top support frame oil cylinder 505 is controlled to extend, and the rear springboard 3 is turned over to a vertical state by using the top support frame 4. During this process, the state of the springboard wire rope 303 is observed, and the springboard wire rope 303 is kept slightly relaxed; when the rear springboard 3 passes the vertical position, it will press on the springboard wire rope 303, and then the springboard winch 3 is controlled to release the springboard wire rope 303, and the rear springboard 3 is slowly turned over and lowered to a horizontal position under the action of gravity. Fig.14 shown.

[0110] S104: Control the bridge extension mechanism 203 between the end bridge section 201 at the far end and the middle bridge section in the separated bridge 2 to extend the end bridge section 201 at the far end to a vertical position, such as Fig.15 shown.

[0111] S105: disengage the bridge lock (i.e., the bridge lock between the erection frame 6 and the separated bridge 2), so that the transverse latch roller 602 is disengaged from the end bridge section slideway; control the bridge pull winch 511 to release the bridge pull wire rope 801, and slowly lower the separated bridge 2 (after the separated bridge 2 is lowered to a certain height, the wire rope support wheel 601 at the end of the erection frame 6 supports the bridge pull wire rope 801); at the same time, control the far-end end bridge section 201 to slowly unfold, unfold the separated bridge 2 and slowly lower it to the ground inside the ground obstacle (such as a firebreak), such as Fig.16 shown.

[0112] S106: Control the springboard winch 302 to release the springboard wire rope 303, and the rear springboard 3 slowly turns over and falls to the ground under the action of gravity. Fig.17 shown.

[0113] S107: Retract the top support frame 4 to the inner side of the fixed bridge body 501, and retract the erection frame 6 to the inner side of the flip bridge body 502. Fig.18 shown.

[0114] S108: lower the rear leg 503 below the fixed bridge body 501 so that the rear leg 503 touches the ground for support; connect the auxiliary connecting plate, the passage marking pole, and the safety net to complete the bridge erection. Fig.19 As shown, a bridge with a vehicle and axle integrated is formed at this time.

[0115] 2. Withdrawal Operation

[0116] The removal process is the opposite of the above-mentioned erection process.

[0117] S201: First check to ensure that the bulldozer blade is stably supported and the fastening pins of the flip bridge body 502 are firmly connected; then remove the passage marking pole, auxiliary connecting plate, and safety net; retract the tail legs, such as Fig. 20 As shown;

[0118] S202: Control the top support frame cylinder 505 and the springboard winch 302 to flip the top support frame 4 to a position perpendicular to the bridge deck of the fixed bridge body 501; control the erection frame 6 and the bridge pulling winch 511 to make the right outer contour line of the erection frame 6 approximately perpendicular to the ground, such as Fig.21 shown.

[0119] S203: Pull up the rear springboard 3 by controlling the springboard winch 302 until the rear springboard 3 reaches a horizontal position.

[0120] S204: Control the bridge winch 511 to pull up the separated bridge span 2, control the far end bridge section to fold and retract, and stop when the transverse latch of the erection frame 6 enters the inner side of the near end bridge section, align the transverse latch of the erection frame with the end bridge section slide slot, and then insert the erection frame roller into the end bridge section slide slot, as shown in FIG. Fig. 22 As shown;

[0121] S205: Use the springboard winch 302 to pull up the rear springboard 3 until the rear springboard 3 leans against the top support frame roller, and then the rear springboard 3 falls onto the fixed bridge body 501 under the action of the top support frame 4 and the springboard winch 302. Fig.23 shown.

[0122] S206: Fold and close the distal end bridge segment, such as Fig.24 As shown;

[0123] S208: Control the erection frame 6 to drive the separated bridge 2 to flip and recover, and cooperate with the bridge pulling winch 511 to recover the wire rope until the wire rope reaches the vertical position. Fig.25 As shown;

[0124] S209: Continue to control the erection frame 6 to drive the separated bridge 2 to flip and recover until the separated bridge 2 falls on the vehicle body. Fig.26 shown.

[0125] Embodiment 3:

[0126] Based on the emergency obstacle crossing truss bridge in the above-mentioned embodiment 1, this embodiment provides a method for erecting and withdrawing the truss bridge for crossing obstacles such as rivers and gullies. At this time, the vehicle bridge is used separately; when the vehicle bridge is used separately, the end springboard 1 is first removed.

[0127] 1. Erection work

[0128] S301: Select a suitable bridge erection point, set the front end of the chassis track away from the shore, release the fastening pin of the flip bridge body 502; extend the bulldozer blade to touch the ground support, such as Fig. 27 shown.

[0129] S302: Control the turning cylinder 509 to push the turning bridge body 502 to swing upward and rotate. At this time, observe the position of the leg-stopping cylinder on the turning bridge body 502. When the leg-stopping cylinder is approximately perpendicular to the horizontal ground, stop pushing the turning bridge body 502; place a leg-stopping pad under the leg-stopping cylinder, control the leg-stopping to extend to touch the ground support, adjust the leg-stopping height, and level both sides of the vehicle body. Fig.28 shown.

[0130] S303: The top support frame oil cylinder is actuated to make the top support frame 4 flip the rear springboard 3 to a vertical state. During this process, the springboard wire rope is kept slightly relaxed. When the rear springboard 3 passes the vertical position, it will press on the springboard wire rope of the springboard winch 302. Then the springboard winch 302 is controlled to release the springboard wire rope. The rear springboard 3 is slowly flipped down to a horizontal position under the action of gravity. Fig.29 shown.

[0131] S304: Start the oil cylinder of the erection frame to make the erection frame push the separated bridge to a vertical state (state judgment method: draw a virtual line vertically upward along the connection point between the tongue-shaped arm and the flip bridge body, and make sure that the upper end of the middle bridge section is completely on the right side of this virtual line); during this process, ensure that the bridge wire rope 801 is in a relaxed state (at this time, the bridge wire rope 801 pulls the separated bridge 2). After the separated bridge reaches the vertical state, control the bridge winch 511 to straighten the bridge wire rope 801, such as Fig.30 shown.

[0132] S305: Make the bridge erection and locking cylinder drive the roller to disengage from the end bridge section slideway; control the bridge pulling winch to release the bridge pulling wire rope 801, slowly lower the separated bridge 2, and at the same time, unfold the far end bridge section, unfold the bridge and slowly lower it to the ground on the opposite bank, and then continue to operate the bridge pulling winch 511 to relax the bridge pulling wire rope 801, such as Fig.31 shown.

[0133] S306: Disconnect the four sets of quick connectors between the tongue-shaped arm 7 and the separated bridge 2;

[0134] S307: Remove the pulley frame from the separated bridge 2 and connect the pulley frame to the tongue-shaped arm 7. At this time, the bridge-pulling wire rope 801 is connected to the tongue-shaped arm 7. Control the bridge-pulling winch 511 to tighten the bridge-pulling wire rope 801. Fig.32 shown.

[0135] S308: Retract the rear latches on both sides of the tongue-shaped arm; control the bridge winch 511 to slowly release the bridge wire rope 801 until the bridge section at the end falls to the ground; retract the front latch of the tongue-shaped arm, and after the front / rear latches of the tongue-shaped arm are retracted into place, control the bridge winch 511 to pull up the tongue-shaped arm 7 through the bridge wire rope, so that the tongue-shaped arm 7 leaves the separated bridge 2, and continue to retract the bridge wire rope 801 until the tongue-shaped arm 7 is tightened. Fig.33 shown.

[0136] S309: Retract the left / right legs; use the springboard winch 302 to pull up the rear springboard 3 until it rests on the top support frame roller, then use the top support frame to cooperate with the springboard winch until the rear springboard falls on the fixed bridge body, and stop the action immediately; control the action of the flip cylinder to retract the flip bridge body onto the chassis; retract the bulldozer and the erection vehicle to evacuate, such as Fig.34 As shown, the bridge erection is completed.

[0137] 2. Withdrawal Operation

[0138] S401: Drive the erection vehicle to the retracted position, adjust the position of the erection vehicle so that the erection vehicle is aligned with the center line of the bridge span, and stop the vehicle so that the front end of the crawler track is approximately the set distance from our shore.

[0139] S402: lower the bulldozer to 20mm above the ground (to facilitate the adjustment of the front and rear position of the erection vehicle); control the tilting frame cylinder to rotate the tilting bridge body upward until the leg cylinder is perpendicular to the ground; control the bridge pulling winch to unfold the bridge pulling wire rope, lower the tongue-shaped arm, and make the front pin of the tongue-shaped arm enter the end bridge span guide connection groove, such as Fig.35 As shown;

[0140] S403: Push the "tongue-shaped arm front pin" to extend, so that the tongue-shaped arm front pin is inserted into the end bridge span guide connection groove. Control the bridge-pulling winch to retract the bridge-pulling wire rope, pull up the shore bridge span, and the end bridge section connection pin is against the upper wall of the tongue-shaped arm slot. Control the tongue-shaped arm rear pin to extend, so that the tongue-shaped arm block clamps the broken bridge span connection pin. Fig.36 As shown;

[0141] S404: lowering the bulldozer to the ground for support; making the left and right legs touch the ground for support and leveling left and right;

[0142] S405: The top support frame cylinder is actuated to enable the top support frame 4 to flip the rear springboard 3 to a vertical state. During this process, the springboard wire rope is kept slightly relaxed. When the rear springboard 3 passes the vertical position, it will press on the springboard wire rope of the springboard winch 302, and then the springboard winch 302 is controlled to release the springboard wire rope. The rear springboard 3 is slowly flipped down to a horizontal position under the action of gravity.

[0143] S406: Assist the operator to go up the bridge, release the connection between the pulley frame and the tongue arm; control the bridge-pulling winch to release the bridge-pulling wire rope, and assist the operator to pull the pulley frame to the lifting lug at the far end of the middle span, and connect the pulley frame to the lifting lug at the far end of the middle span, such as Fig.37 As shown;

[0144] S407: Connect the four sets of quick connectors between the tongue-shaped arm and the bridge span; control the bridge-pulling winch to retract the bridge-pulling wire rope, and at the same time control the far-end bridge section to fold and retract until the transverse latch of the erection frame enters the inner side of the near-end bridge section; then align the transverse latch roller of the erection frame with the end bridge section slide slot, and insert the erection frame roller into the end bridge section slide slot, as shown in FIG. Fig.38 shown.

[0145] S408: Retract the erection frame to make the separated bridge lean against the flip bridge body; control the springboard winch to pull up the rear springboard until the rear springboard falls onto the fixed bridge body, and immediately stop the action, such as Fig.39 shown.

[0146] S409: Retract the flip bridge body so that it falls onto the chassis; retract the left and right legs; retract the bulldozer, such as Fig.40 shown.

[0147] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An emergency rapid obstacle bridge, characterized in that: include: A chassis vehicle and a bridge unit arranged on the chassis vehicle; The bridge unit includes: an end springboard, a separated bridge, a rear springboard, a top support frame, a truss bridge, an erection frame, a tongue-shaped arm and a bridge pulling mechanism; The end springboard is pin-connected to one end of the separated bridge; The other end of the separated bridge is connected to and separated from the truss bridge through a tongue-shaped arm; The tail ramp is pin-connected to the truss bridge and can be folded and unfolded relative to the truss bridge; The supporting frame is used to support the rear springboard so that it can be turned upward and outward relative to the truss bridge; The truss bridge comprises a fixed bridge body and a flip bridge body; the fixed bridge body is fixedly connected to the chassis, one end of the flip bridge body is butted with the fixed bridge body, and the other end is pin-connected with the chassis; the flip bridge body can flip around the pin connection, so that the flip bridge body can be stacked on the chassis or flipped to the front end to touch the ground; One end of the erection frame is pin-connected to the flip bridge body, and the other end is used to cooperate with the separated bridge to push the separated bridge to flip; The bridge pulling mechanism is used to pull the separate bridge through the bridge pulling wire rope during the process of erecting or withdrawing the separate bridge.

2. The emergency rapid obstacle bridge according to claim 1, characterized in that: The bridge-pulling mechanism comprises: a pulley frame arranged on a separated bridge, a wire rope support wheel arranged at the end of the erection frame, a bridge-pulling winch arranged on a truss bridge, and a bridge-pulling wire rope wound on the bridge-pulling winch; the free end of the bridge-pulling wire rope is connected to a pulley assembly A of the pulley frame.

3. The emergency rapid obstacle bridge according to claim 1, characterized in that: A springboard pulling mechanism is provided between the tail springboard and the top support frame; The springboard pulling mechanism includes a pulley assembly B arranged in the middle of the rear springboard and a springboard winch arranged in the middle of the connection end between the rear springboard and the truss bridge; the springboard wire rope is wound around the springboard winch, and the free end passes around the pulley assembly B and is connected to the wire rope connecting ear on the middle crossbeam of the top support frame.

4. The emergency rapid obstacle crossing bridge according to any one of claims 1 to 3, characterized in that: The separated bridge comprises: a middle bridge section and end bridge sections pinned at both ends of the middle bridge section; The end bridge section can be folded and unfolded relative to the middle bridge section under the action of the bridge unfolding mechanism; The surface of the end bridge section is provided with a slide groove, and the transverse latch roller on the erection frame can slide in the slide groove to realize the action of retracting and extending the bridge.

5. The emergency rapid obstacle crossing bridge according to any one of claims 1 to 3, characterized in that: The tilting bridge body is provided with a tilting cylinder, a setting frame cylinder, a bridge pulling winch and a front end support leg; One end of the flip bridge body is butted against the fixed bridge body and locked by a fastening pin; One end of the tilting oil cylinder is pin-connected to the chassis, and the other end is connected to the double-ear plate of the middle cross beam of the tilting bridge body, so as to push the tilting bridge body to tilt around the pin connection between the tilting oil cylinder and the chassis after the fastening pin is released; One end of the oil cylinder of the erection frame is pin-connected to the flip bridge body, and the other end is connected to the erection frame, so as to promote the flipping movement of the erection frame; A bridge-pulling winch is provided at the front end of the flip bridge body, and a bridge-pulling wire rope is wound around the bridge-pulling winch. The bridge-pulling wire rope passes over the pulley on the pulley frame at the rear end of the flip bridge body and is connected to the pulley assembly A of the pulley frame on the separated bridge; The flip bridge body is also provided with a tongue-shaped arm seat for pinning the tongue-shaped arm; Two front supporting legs are also arranged under the front wheel track of the flip bridge body, which are used to support the ground when the axle is separated and erected.

6. The emergency rapid obstacle crossing bridge according to any one of claims 1 to 3, characterized in that: One end of the tongue-shaped arm is provided with a connecting ear for pinning with the tongue-shaped arm seat on the flip bridge body; the other end is provided with a lifting ear for connecting to the pulley frame.

7. A method for erecting an emergency rapid obstacle bridge, characterized in that: Based on the emergency rapid obstacle crossing bridge described in claim 3 above, when the vehicle and bridge are used in an integrated manner: S101: The bridge unit is folded on the chassis, and the chassis is driven to the erection position, so that the bulldozer on the front side of the chassis is extended to touch the ground for support; S102: Expand the erection rack: Control the erection frame oil cylinder to flip the separated bridge upward and push it up to a vertical state; at this time, the bridge-pulling wire rope pulls the separated bridge; after the separated bridge reaches the vertical state, the bridge-pulling wire rope is straightened; S103: Deploy the rear ramp: Control the action of the top support frame cylinder, and use the top support frame to flip the tail springboard to a vertical state; when the tail springboard passes the vertical position, it presses on the springboard wire rope, and then controls the springboard winch to release the springboard wire rope, and the tail springboard slowly flips down to a horizontal position under the action of gravity; S104: Controlling the end bridge section at the far end of the separated bridge to be deployed to a vertical position; S105: disengage the lock bridge; Release the bridge-pulling wire rope and slowly lower the separated bridge; at the same time, control the far-end end bridge section to slowly unfold, unfold the separated bridge and slowly lower it to the ground inside the ground obstacle; S106: Release the springboard wire rope, and the rear springboard slowly turns over and falls to the ground under the action of gravity; S107: retract the top support frame to the inner side of the fixed bridge body, and retract the erection frame to the inner side of the flip bridge body; S108: Lower the rear support leg below the fixed bridge body so that the rear support leg touches the ground for support; at this time, a bridge with a vehicle and axle integrated is formed.

8. A method for erecting an emergency rapid obstacle bridge, characterized in that: Based on the emergency rapid obstacle crossing bridge described in claim 3 above, when the vehicle bridge is separated for use, the end springboard is first removed; S301: the bridge unit is folded on the chassis, and the chassis is driven to the erection position, so that the bulldozer on the front side of the chassis is extended to touch the ground for support; S303: Control the turning oil cylinder to push the turning bridge body to swing upward and rotate. When the leg stop oil cylinder on the turning bridge body is perpendicular to the horizontal ground, stop pushing the turning bridge body; place a leg stop pad under the leg stop oil cylinder, control the leg stop to extend to touch the ground support, adjust the leg stop extension height, and level both sides of the vehicle body; S304: the hydraulic cylinder of the top support frame is actuated to make the top support frame flip the rear springboard to a vertical state; when the rear springboard passes the vertical position, it is pressed on the springboard wire rope, and then the springboard wire rope is released, and the rear springboard is slowly flipped down to a horizontal position under the action of gravity; S305: starting the erection frame oil cylinder to enable the erection frame to push the separated bridge to a vertical state; during this process, the bridge pulling wire rope pulls the separated bridge; after the separated bridge reaches the vertical state, the bridge pulling winch is controlled to straighten the bridge pulling wire rope; S306: The bridge erection and locking cylinder drives the roller to disengage from the end bridge section slideway; the bridge pulling winch is controlled to release the bridge pulling wire rope, and the separated bridge is slowly lowered. At the same time, the far end bridge section is unfolded, and the bridge is unfolded and slowly lowered to the ground on the opposite bank; S307: Disconnect the quick connector between the tongue-shaped arm and the split bridge; S308: removing the pulley frame from the separated bridge, connecting the pulley frame to the tongue-shaped arm, and controlling the bridge-pulling winch to tighten the bridge-pulling wire rope; S309: Retract the rear latches on both sides of the tongue-shaped arm; control the bridge-pulling winch to slowly release the bridge-pulling wire rope until the bridge section at the end falls to the ground; retract the front latch of the tongue-shaped arm. After the front / rear latches of the tongue-shaped arm are retracted into place, control the bridge-pulling winch to pull up the tongue-shaped arm through the bridge-pulling wire rope, so that the tongue-shaped arm leaves the separated bridge, and continue to retract the bridge-pulling wire rope until the tongue-shaped arm is tightened; S310: Use the springboard winch to pull up the rear springboard until it rests on the roller of the top support frame, then use the top support frame to cooperate with the springboard winch to pull up the rear springboard until it falls onto the fixed bridge body, and immediately stop the action; control the action of the flipping cylinder to retract the flipping bridge body onto the chassis vehicle; retract the bulldozer and the erection vehicle to evacuate, thereby completing the bridge erection.

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