阅读说明：本技术 一种道路桥梁用可移动应急桥装置 (Movable emergency bridge device for road and bridge ) 是由 张二伟 常小利 曹世尧 邢鹏龙 徐龙龙 刘佩茹 刘来全 卢卫峰 史兴彩 匡飚 兰 于 2021-09-23 设计创作，主要内容包括：本发明属于应急桥梁技术领域,且公开了一种道路桥梁用可移动应急桥装置,包括底部支撑架,所述底部支撑架的右端设置有固定件,所述固定件上安装有横梁,所述横梁内侧的底部设有限位卡板和滑轮组,所述滑轮组的顶部滑动连接有滑动架,所述滑动架的右端串联有多个延长架,所述横梁的顶部固定安装有索架；本发明通过延长架、滑动架、吊索、第一电动伸缩杆等之间的相互配合,通过控制第二电磁插销收缩与伸长,同时通过控制第一电动伸缩杆收缩或伸长,使应急桥转变为拱形应急桥,从而使桥身升高,避免因洪水上涨影响救援人员的救援。(The invention belongs to the technical field of emergency bridges and discloses a movable emergency bridge device for a road bridge, which comprises a bottom support frame, wherein a fixing piece is arranged at the right end of the bottom support frame, a cross beam is arranged on the fixing piece, a limiting clamping plate and a pulley block are arranged at the bottom of the inner side of the cross beam, the top of the pulley block is connected with a sliding frame in a sliding manner, a plurality of extension frames are connected in series at the right end of the sliding frame, and a cable frame is fixedly arranged at the top of the cross beam; according to the invention, through the mutual matching of the extension frame, the sliding frame, the sling, the first electric telescopic rod and the like, the contraction and the extension of the second electromagnetic bolt are controlled, and meanwhile, the contraction or the extension of the first electric telescopic rod is controlled, so that the emergency bridge is converted into the arched emergency bridge, the bridge body is lifted, and the rescue of rescue workers is prevented from being influenced by the rising of flood.)

1. The utility model provides a road and bridge are with portable emergent bridge device, includes the bottom sprag frame, its characterized in that: the right end of the bottom support frame is provided with a fixing piece, a cross beam is mounted on the fixing piece, a limiting clamping plate and a pulley block are arranged at the bottom of the inner side of the cross beam, the top of the pulley block is connected with a sliding frame in a sliding mode, a plurality of extension frames are connected to the right end of the sliding frame in series, and a cable frame is fixedly mounted at the top of the cross beam;

the cable frame further comprises a fixed plate, the fixed plate is fixedly connected with the cross beam, the top of the fixed plate is fixedly connected with a first electric telescopic rod, the top of the first electric telescopic rod is fixedly connected with an installation frame, a fixed pulley is fixedly installed on the inner side of the installation frame, and a pressure sensor is arranged at the bottom of a rotating shaft of the fixed pulley;

the extension frame comprises a body frame, a second hanging buckle is arranged in the middle of the body frame, a transverse plate is arranged in the middle of the body frame, and a first electromagnetic bolt and a second electromagnetic bolt are arranged on the left side and the right side of one end of the body frame; first jacks which are in splicing fit with the first electromagnetic bolts are arranged at the left side and the right side of one end, close to the extension frame, of the sliding frame and the other end of the body frame, circular grooves are formed in the peripheries of the first jacks, and a plurality of groups of second jacks which are in splicing fit with the second electromagnetic bolts are formed in the circular grooves;

a plurality of groups of first hanging buckles are arranged at the right end of the sliding frame; the first hanging buckle is connected with the second hanging buckle through a sling; the sling passes through between two fixed pulleys positioned at the top of the cable frame;

the extension frame is rotated upwards or downwards by controlling the second electromagnetic bolt on the extension frame to contract or extend and simultaneously controlling the first electric telescopic rod below the sling corresponding to the extension frame to extend or contract, so that the emergency bridge is deformed;

in the process of horizontally moving the sliding frame, when the pressure value detected by the pressure sensor is smaller than the preset pressure value, the first electric telescopic rod is controlled to extend to the position where the pressure value detected by the pressure sensor is equal to the preset pressure value and stop, when the pressure value detected by the pressure sensor is larger than the preset pressure value, the first electric telescopic rod is controlled to contract to the position where the pressure value detected by the pressure sensor is equal to the preset pressure value and stop, the total height of the cable frame is adjusted by controlling the expansion amount of the first electric telescopic rod, and the compensation of the top height of the sling is realized.

2. The movable emergency bridge device for road and bridge according to claim 1, wherein: the equal fixed mounting in both sides of crossbeam bottom has the reinforcing plate, the inboard fixed mounting of bottom sprag frame has two erection columns.

3. The movable emergency bridge device for road and bridge of claim 2, wherein: two the erection column middle part is all articulated to be installed second electric telescopic handle, wheel carrier and supporting leg are all installed at the both ends of bottom sprag frame, the wheel carrier articulates on the bottom sprag frame, the gyro wheel is installed to the bottom of wheel carrier, second electric telescopic handle's output is articulated with the wheel carrier.

4. The movable emergency bridge device for road and bridge according to claim 1, wherein: the sliding frame comprises a positioning hole, and the sliding frame can be horizontally moved to align the positioning hole with a bolt hole in the surface of the limiting clamping plate.

5. The movable emergency bridge device for road and bridge according to claim 1, wherein: the extension frame is provided with a plurality of, and each first electromagnetism bolt and the second electromagnetism bolt of accessible both ends is fixed between the extension frame.

6. The movable emergency bridge device for road and bridge according to claim 1, wherein: the right end of the extension frame, which is positioned on the rightmost side, is fixedly connected with a heightening support, and the bottom of the heightening support is supported on the ground.

7. The movable emergency bridge device for road and bridge according to claim 1, wherein: the cable frames are symmetrically arranged at two ends of the top of the cross beam, and each sling respectively penetrates through the top ends of different cable frames.

8. The movable emergency bridge device for road and bridge according to claim 3, wherein: the height of the wheel frame in a vertical state is higher than that of the supporting legs.

9. The movable emergency bridge device for road and bridge of claim 6, wherein: the height of the heightening support is adjustable, and the heightening support is fixedly connected with the first insertion hole and the second insertion hole in the extending frame through bolts and nuts.

10. The movable emergency bridge device for road and bridge according to claim 1, wherein: the limiting clamping plate is hinged to the inner side of the cross beam, a hole through which a bolt penetrates is formed in the limiting clamping plate, and a nut matched with the bolt is fixed to the inner side of the cross beam.

Technical Field

The invention belongs to the technical field of emergency bridges, and particularly relates to a movable emergency bridge device for a road bridge.

Background

The emergency bridge belongs to emergency equipment, belongs to a temporarily erected bridge used for dealing with the current emergency and used in emergency rescue and disaster relief, can temporarily replace a damaged bridge and is used for rescue personnel to perform disaster relief tasks, and is important disaster relief equipment.

The telescopic emergency bridge provided by application number CN201710346249.1 comprises a main body of the bridge, wherein an upper support plate and a lower support plate are connected through a movable support frame, and the upper support plate and the lower support plate are connected through a single movable support frame; in addition, the height of the emergency bridge cannot be adjusted in time according to the dangerous flood situation, so that the emergency bridge is flooded by the flood to influence the passing of emergency personnel, and the rescue efficiency of the emergency personnel is reduced.

Aiming at the defects in the prior art, the invention provides the movable emergency bridge device for the road and the bridge, which has the characteristics of convenience in movement and high structural strength, and can be used as a temporary channel for emergency personnel to perform disaster relief tasks and provide support for the disaster relief tasks in emergency rescue and disaster relief.

Disclosure of Invention

The invention aims to solve the problems, and provides a movable emergency bridge device for a road bridge, which has the advantages of high structural strength, controllable length, and convenience in movement and assembly.

In order to achieve the purpose, the invention provides the following technical scheme: a movable emergency bridge device for a road bridge comprises a bottom support frame, wherein a fixing piece is arranged at the right end of the bottom support frame, a cross beam is mounted on the fixing piece, a limiting clamping plate and a pulley block are arranged at the bottom of the inner side of the cross beam, the top of the pulley block is connected with a sliding frame in a sliding manner, a plurality of extension frames are connected in series at the right end of the sliding frame, and a cable frame is fixedly mounted at the top of the cross beam;

the cable frame further comprises a fixed plate, the fixed plate is fixedly connected with the cross beam, the top of the fixed plate is fixedly connected with a first electric telescopic rod, the top of the first electric telescopic rod is fixedly connected with an installation frame, a fixed pulley is fixedly installed on the inner side of the installation frame, and a pressure sensor is arranged at the bottom of a rotating shaft of the fixed pulley;

the extension frame comprises a body frame, a second hanging buckle is arranged in the middle of the body frame, a transverse plate is arranged in the middle of the body frame, and a first electromagnetic bolt and a second electromagnetic bolt are arranged on the left side and the right side of one end of the body frame; first jacks which are in splicing fit with the first electromagnetic bolts are arranged at the left side and the right side of one end, close to the extension frame, of the sliding frame and the other end of the body frame, circular grooves are formed in the peripheries of the first jacks, and a plurality of groups of second jacks which are in splicing fit with the second electromagnetic bolts are formed in the circular grooves;

a plurality of groups of first hanging buckles are arranged at the right end of the sliding frame; the first hanging buckle is connected with the second hanging buckle through a sling; the sling passes through between two fixed pulleys positioned at the top of the cable frame;

the extension frame is rotated upwards or downwards by controlling the second electromagnetic bolt on the extension frame to contract or extend and simultaneously controlling the first electric telescopic rod below the sling corresponding to the extension frame to extend or contract, so that the emergency bridge is deformed;

in the process of horizontally moving the sliding frame, when the pressure value detected by the pressure sensor is smaller than the preset pressure value, the first electric telescopic rod is controlled to extend to the position where the pressure value detected by the pressure sensor is equal to the preset pressure value and stop, when the pressure value detected by the pressure sensor is larger than the preset pressure value, the first electric telescopic rod is controlled to contract to the position where the pressure value detected by the pressure sensor is equal to the preset pressure value and stop, the total height of the cable frame is adjusted by controlling the expansion amount of the first electric telescopic rod, and the compensation of the top height of the sling is realized.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the mutual matching of the extension frame, the sliding frame, the sling, the first electric telescopic rod and the like, the extension or contraction of the first electric telescopic rod is controlled according to the change of the pressure sensor, when the pressure value detected by the pressure sensor is smaller than the preset pressure value, the first electric telescopic rod is controlled to be extended until the pressure value detected by the pressure sensor is equal to the preset pressure value, the first electric telescopic rod is controlled to be stopped, when the pressure value detected by the pressure sensor is larger than the preset pressure value, the first electric telescopic rod is controlled to be contracted until the pressure value detected by the pressure sensor is equal to the preset pressure value, the first electric telescopic rod is stopped, the overall height of the sling frame is adjusted by controlling the expansion amount, and the compensation of the height of the top point of the sling is realized; the sliding frame and the extension frame are respectively tensioned by two ends of the sling, so that the load capacity of the device is improved.

2. The invention controls the second electromagnetic bolt of the extension frame above the person falling into the water to contract by controlling the mutual matching among the extension frame, the sliding frame, the suspension cables, the first electric telescopic rod and the like, controls the first electric telescopic rod to contract under all the corresponding suspension cables from the extension frame above the person falling into the water to the last extension frame so as to enable the extension frame above the person falling into the water to rotate relative to the sliding frame, then enables the connection point of the extension frame above the person falling into the water and the adjacent extension frame to move to the position above the person falling into the water by pulling the sliding frame, then controls the first electromagnetic bolt corresponding to the second extension frame to contract so as to enable the second extension frame to be separated from the first extension frame, and controls the first electric telescopic rod to contract so as to enable the second extension frame to move downwards to be close to the person falling into the water to rescue the person falling into the water, so that the device not only can be used as an emergency bridge but also be used for rescue, thereby improving the applicability of the device.

3. According to the invention, through mutual matching of the extension frame, the sliding frame, the sling and the first electric telescopic rod, the second electromagnetic bolt is controlled to contract and extend, and the first electric telescopic rod is correspondingly and properly controlled to contract or extend, so that the emergency bridge is converted into the arched emergency bridge, the bridge body is raised, and the rescue of rescue workers is prevented from being influenced by the rising of flood.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the present invention;

FIG. 3 is a schematic view of the carriage, extension and sling of the present invention;

FIG. 4 is a left side view of the present invention;

FIG. 5 is a schematic structural view of the cable mount of the present invention;

FIG. 6 is a cross-sectional view of the mounting bracket and fixed sheave arrangement of the present invention;

FIG. 7 is a schematic view of an extension frame according to the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 4 according to the present invention;

FIG. 9 is an enlarged view of portion B of FIG. 7 according to the present invention.

In the figure: 1. a bottom support frame; 2. a fixing member; 3. a cross beam; 4. a limiting clamping plate; 5. a carriage; 51. hanging a buckle; 52. positioning holes; 6. a pulley block; 7. a cable frame; 71. a fixing plate; 72. a first electric telescopic rod; 73. a pressure sensor; 74. a mounting frame; 75. a fixed pulley; 8. an extension frame; 81. a body frame; 82. a first electromagnetic bolt; 821. a first jack; 83. hanging and buckling the second number; 84. a second electromagnetic bolt; 85. a circular groove; 851. a second jack; 9. a reinforcing plate; 10. mounting a column; 11. a second electric telescopic rod; 12. a wheel carrier; 13. a roller; 14. supporting legs; 15. heightening and supporting; 16. a sling.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

as shown in fig. 1 to 9, the invention provides a movable emergency bridge device for a road bridge, which comprises a bottom support frame 1, wherein a fixing part 2 is arranged at the right end of the bottom support frame 1, a cross beam 3 is arranged on the fixing part 2, a limiting clamping plate 4 and a pulley block 6 are arranged at the bottom of the inner side of the cross beam 3, the top of the pulley block 6 is connected with a sliding frame 5 in a sliding manner, a plurality of extension frames 8 are connected to the right end of the sliding frame 5 in series, and a cable frame 7 is fixedly arranged at the top of the cross beam 3.

Spacing cardboard 4 is inboard articulated with crossbeam 3, and spacing cardboard 4 sets up the hole that the bolt passed, and 3 inboard crossbeams be fixed with bolt complex nut, through passing the bolt hole on spacing cardboard 4 and in the inboard fixed nut screw-thread fit of crossbeam 3, can accomplish the fixed of spacing cardboard 4.

The cable frame 7 further comprises a fixing plate 71, the fixing plate 71 is fixedly connected with the cross beam 3, the top of the fixing plate 71 is fixedly connected with a first electric telescopic rod 72, the top of the first electric telescopic rod 72 is fixedly connected with an installation frame 74, a fixed pulley 75 is fixedly installed on the inner side of the installation frame 74, and the bottom of a rotating shaft of the fixed pulley 75 is provided with a pressure sensor 73; the first electric telescopic rod 72 is controlled to extend or contract according to the change of the pressure sensor 73, when the pressure value detected by the pressure sensor 73 is smaller than the preset pressure value, the first electric telescopic rod 72 is controlled to extend until the pressure value detected by the pressure sensor 73 is equal to the preset pressure value, the first electric telescopic rod 72 is controlled to contract until the pressure value detected by the pressure sensor 73 is equal to the preset pressure value, the total height of the cable frame 7 is adjusted by controlling the extension and contraction amount, and the compensation of the height of the top point of the sling 16 is realized; the preset pressure value is the pressure value detected by the pressure sensor 73 when the sliding frame 5 and the extension frame 8 are both in the horizontal position and the sling 16 is in the tensioned state.

The cable frames 7 are symmetrically arranged at two ends of the top of the cross beam 3, and each sling 16 respectively penetrates through the top ends of different cable frames 7; as shown in fig. 2, three extension frames 8 are arranged on the emergency bridge according to the width of the river, each extension frame 8 is connected with a first hanging buckle 51 through a sling 16, two slings 16 are required to be used for connecting each extension frame 8 with the first hanging buckle 51, and each sling 16 is installed with a corresponding different cable frame 7; the slings 16 enable the apparatus to withstand greater loads, increasing the load carrying capacity of the emergency bridge.

The extension frame 8 comprises a body frame 81, a second hanging buckle 83 is arranged in the middle of the body frame 81, and a transverse plate is arranged in the middle of the body frame 81; the transverse plate can be paved with objects such as floors or boards, and the emergency rescue personnel can conveniently and safely pass through the transverse plate.

A first electromagnetic bolt 82 and a second electromagnetic bolt 84 are arranged on the left side and the right side of one end of the body frame 81; one end of the sliding frame 5 close to the extension frame 8 and the other end left and right sides of the body frame 81 are provided with a first insertion hole 821 in insertion fit with the first electromagnetic bolt 82, a circular groove 85 is formed around the first insertion hole 821, and a plurality of groups of second insertion holes 851 in insertion fit with the second electromagnetic bolt 84 are formed in the circular groove 85.

A plurality of extension frames 8 are arranged, and the extension frames 8 can be fixed through a first electromagnetic bolt 82 and a second electromagnetic bolt 84 at two ends; the position of the extension frame 8 is changed by controlling the mutual matching of the first electromagnetic bolt 82 and the second electromagnetic bolt 84.

The right end of the rightmost extension frame 8 is fixedly connected with a heightening bracket 15, and the bottom of the heightening bracket 15 is supported on the ground; the height of the heightening bracket 15 can be adjusted, and the heightening bracket 15 is fixedly connected with the first insertion hole 821 and the second insertion hole 851 on the extension frame 8 through bolts and nuts.

When the extension frame 8 crosses the river channel and extends to the other side of the river channel, the bottom of the heightening bracket 15 contacts with the ground and supports the heightening bracket 15, so that the extension frame 8 is kept in a horizontal state.

The sliding frame 5 comprises a positioning hole 52, and the positioning hole 52 can be aligned with a bolt hole on the surface of the limiting clamping plate 4 by horizontally moving the sliding frame 5; after alignment, the position of the sliding frame 5 can be limited by fixing the sliding frame by using a locking bolt; a plurality of groups of first hanging buckles 51 are arranged at the right end of the sliding frame 5; the first hanging buckle 51 is connected with the second hanging buckle 83 through a sling 16; the sling 16 passes between two fixed pulleys 75 located at the top of the rope frame 7; because the sliding frame 5 and the extension frame 8 are required to be tensioned at two ends of the sling 16 respectively, a downward pressure is applied to the fixed pulley 75 below, the pressure value detected by the pressure sensor 73 changes, and a controller controls the first electric telescopic rod 72 to extend or contract according to the change of the pressure sensor 73, so that the height of the top point of the sling 16 is compensated, and the device is in a balanced and stable state.

The extension frame 8 is rotated upwards or downwards by controlling the second electromagnetic bolt 84 on the extension frame 8 to contract or extend and simultaneously controlling the first electric telescopic rod 72 below the sling 16 corresponding to the extension frame 8 to extend or contract, so that the emergency bridge is deformed; deformation is carried out by selecting a proper deformation point, so that convenience is provided for rescue teams.

Reinforcing plates 9 are fixedly arranged on two sides of the bottom end of the cross beam 3, and two mounting columns 10 are fixedly arranged on the inner side of the bottom support frame 1; the middle parts of the two mounting columns 10 are respectively provided with a second electric telescopic rod 11 in a hinged mode, the two ends of the bottom supporting frame 1 are respectively provided with a wheel frame 12 and a supporting leg 14, the wheel frames 12 are hinged to the bottom supporting frame 1, the bottom of the wheel frames 12 is provided with a roller 13, and the output end of the second electric telescopic rod 11 is hinged to the wheel frames 12.

The height of the wheel carrier 12 in the vertical state is higher than that of the supporting legs 14; when the second electric telescopic rod 11 extends, the output end of the second electric telescopic rod 11 can prop against the wheel carrier 12 to enable the wheel carrier to rotate around the hinged position with the bottom support frame 1 to the outer end of the bottom support frame 1, the second electric telescopic rod 11 can jack the bottom support frame 1 when deflecting to a vertical state, the supporting leg 14 can be separated from the ground, and therefore the whole emergency bridge can be moved through the roller 13.

When in use, firstly, the parts of the emergency bridge are assembled according to the figure 1, the bottom support frame 1 and the cross beam 3 are detachable parts, the cross beam 3 is installed on the fixing part 2 and then fixed by the reinforcing plate 9, the limit clamping plate 4 is fixed, then the sliding frame 5 is installed on the pulley block 6, then the extension frame 8 is installed according to the length of a river channel, after the extension frame 8 is connected, the sling 16 is hooked with the second hanging buckle 83 and the first hanging buckle 51, the sling 16 is sleeved on the cable frame 7, the heightening support 15 is installed on the right side of the extension frame 8 at the rightmost end, after the installation is finished, the first electric telescopic rod 72 under the extension frame 8 corresponding to the sling 16 is sequentially contracted or extended in the direction away from the sliding frame 5, when the first electric telescopic rod 72 is contracted or extended until the extension frame 8 and the sliding frame 5 are at the same level, controlling the second electromagnetic bolt 84 on the extension frame 8 to extend, and locking the second electromagnetic bolt 84 with the sliding frame 5 or the adjacent extension frame 8, when all the extension frames 8 are adjusted to be at the same level with the sliding frame 5, then pushing the sliding frame 5 to the right end along the pulley block 6, so that the extension frame 8 can cross over the river channel, in the process that the sliding frame 5 moves to the right end along the pulley block 6, because the sliding frame 5 and the extension frame 8 are respectively required to be tensioned at two ends of the sling 16, a downward pressure is provided for the fixed pulley 75 below, and further the pressure value detected by the pressure sensor 73 changes, a controller controls the first electric telescopic rod 72 to extend or retract according to the change of the pressure sensor 73, so that the compensation of the height of the top point of the sling 16 is realized, and the device is in a tensioning state with stable balance; in the process of horizontally moving the sliding frame 5, the first electric telescopic rod 72 is controlled to extend or contract according to the change of the pressure sensor 73, when the pressure value detected by the pressure sensor 73 is smaller than the preset pressure value, the first electric telescopic rod 72 is controlled to extend until the pressure value detected by the pressure sensor 73 is equal to the preset pressure value, the first electric telescopic rod 72 is controlled to contract until the pressure value detected by the pressure sensor 73 is equal to the preset pressure value, the overall height of the cable frame 7 is adjusted by controlling the extension and contraction amount of the first electric telescopic rod 72, and the compensation of the height of the top point of the sling 16 is realized; the sliding frame 5 and the extension frame 8 are respectively tensioned by two ends of the sling 16, thereby improving the load capacity of the device; after the extension frame 8 stretches across the river channel, the bottom of the heightening support 15 can support the ground, and then the positioning hole 52 and the limiting clamping plate 4 are fixed, so that the sliding frame 5 can be limited to be in a horizontal state by the inner extending edge of the limiting clamping plate 4 in sliding.

When the whole emergency bridge is moved, the second electric telescopic rod 11 is controlled to extend, the output end of the second electric telescopic rod 11 is abutted against the wheel carrier 12, the wheel carrier 12 is enabled to rotate around the hinged part with the bottom supporting frame 1 until the wheel carrier 12 can jack up the emergency bridge through the roller 13 in a vertical state, and therefore the emergency bridge is moved.

Example 2:

as a further improvement of the technical scheme, when the emergency bridge needs to be quickly folded in case of emergency, the emergency bridge can be quickly folded in the following way.

When the emergency bridge needs to be quickly folded, firstly, the second electromagnetic bolt 84 on the first extension frame 8 close to one side of the sliding frame 5 is controlled to contract, so that the sliding frame 5 and the first extension frame 8 are unlocked, then the first electric telescopic rod 72 below the sling 16 corresponding to the first extension frame 8 is controlled to extend, as the sliding frame 5 and the first extension frame 8 are unlocked, the first extension frame 8 can rotate relative to the sliding frame 5, the first electric telescopic rod 72 extends, so that the first extension frame 8 rotates around the sliding frame 5 to be upwards folded, and when the first extension frame 8 is folded to the vertical position, the first extension frame 8 is folded; and then controlling a second electromagnetic bolt 84 on a second extension frame 8 close to one side of the sliding frame 5 to contract to unlock the second extension frame 8 and the first extension frame 8, after unlocking, rotating the second extension frame 8 downwards due to the action of self gravity, and then properly adjusting a first electric telescopic rod 72 below a sling 16 corresponding to the second extension frame 8 according to actual conditions to enable the second extension frame 8 to be in a vertical state, and sequentially retracting and folding the extension frames 8 according to the method, so that the work of retracting the emergency bridge can be completed.

When people fall into water, the deformation point can be selected according to the falling point of the people, so that the emergency bridge is deformed to become a rescue ladder, in order to facilitate the understanding of the invention, the falling point of the people at the first extension frame 8 close to the sliding frame 5 is taken as the falling point, when the people falling into water is found to be under the first extension frame 8, the second extension frame 8 is unlocked with the first extension frame 8 by controlling the contraction of the second electromagnetic bolt 84 on the second extension frame 8 close to one side of the sliding frame 5, after the unlocking, the second extension frame 8 tends to rotate downwards due to the self gravity, but the sling 16 is not rotated, then the second extension frame 8 to the last extension frame 8 are controlled to contract through the first electric telescopic rod 72 under all corresponding slings 16, and the second extension frame 8 to the last extension frame 8 are rotated relative to the first extension frame 8 due to the contraction of the first electric telescopic rod 72, then through pulling carriage 5, make second extension frame 8 and first extension frame 8 tie point remove to the personnel top that fall into water, the rotation point removes to the personnel top that fall into water promptly, then the shrink of the first electromagnetism bolt 82 that control second extension frame 8 corresponds, make second extension frame 8 and the separation of first extension frame 8, the shrink of first electric telescopic handle 72 of simultaneous control, make second extension frame 8 move down and be close to the personnel that fall into water, rescue personnel falling into water, make this device not only can regard as emergent bridge and can also regard as the rescue ladder to use, and then improved the suitability of this device.

Example 3:

as a further improvement of the above technical solution, when the flood rises, since the emergency bridge is submerged by the flood, the rescue workers and the trapped persons cannot directly observe the position of the emergency bridge through naked eyes, and only touch the position of the tentative emergency bridge by footsteps, the passing speed of the rescue workers and the trapped persons is affected, so as to ensure that the passing speed of the rescue workers and the trapped persons is not affected even if the emergency bridge rises due to the flood, the rescue is performed according to the method described in this embodiment.

When the flood rises, the second electromagnetic bolt 84 on the first extension frame 8 is controlled to contract, the first electric telescopic rod 72 below the sling 16 corresponding to the first extension frame 8 is controlled to extend at the same time, the first extension frame 8 is enabled to rotate upwards, when the first electric telescopic rod is rotated upwards to a proper height, the first electric telescopic rod 72 is stopped to extend, the second electromagnetic bolt 84 on the first extension frame 8 is controlled to extend and be inserted into the second insertion hole 851, the first extension frame 8 and the first extension frame 8 are locked, the second electromagnetic bolt 84 on the second extension frame 8 is controlled to contract, the first electric telescopic rod 72 below the sling 16 corresponding to the second extension frame 8 is controlled to contract at the same time, the second extension frame 8 is enabled to rotate downwards, when the second extension frame 8 rotates downwards to a horizontal position, the first electric telescopic rod 72 stops contracting, and the second electromagnetic bolt 84 on the second extension frame 8 is controlled to extend and be inserted into the second insertion hole 851, the second extension frame 8 is locked with the first extension frame 8 to form fixed connection, then the second electromagnetic bolt 84 on the penultimate extension frame 8 is controlled to contract, and the first electric telescopic rod 72 below the sling 16 corresponding to the penultimate extension frame 8 is controlled to contract at the same time, so that the penultimate extension frame 8 rotates downwards, when the penultimate extension frame 8 rotates downwards to a proper position, the first electric telescopic rod 72 stops contracting, the second electromagnetic bolt 84 on the penultimate extension frame 8 is controlled to extend and insert into the second insertion hole 851, so that the penultimate extension frame 8 and the penultimate extension frame 8 are locked to form fixed connection; finally, the second electromagnetic bolt 84 on the last-but-one extension frame 8 is controlled to contract, the first electric telescopic rod 72 below the sling 16 corresponding to the last-but-one extension frame 8 is controlled to contract at the same time, the last-but-one extension frame 8 rotates upwards, when the last-but-one extension frame 8 rotates upwards to the horizontal position and the heightening support 15 is in contact with the ground, the first electric telescopic rod 72 stops contracting, the second electromagnetic bolt 84 on the last-but-one extension frame 8 is controlled to extend and be inserted into the second insertion hole 851, and the last-but-one extension frame 8 are locked and fixedly connected; the bridge can be changed into an arch bridge in the above way, when the arch bridge bears the weight, the pressure is transmitted downwards and outwards to the adjacent part, and all parts of the arch are mutually extruded and combined more tightly; the arch compression can generate an outward thrust, and the arch can bear larger weight by resisting the outward thrust; on one hand, the bridge body can be lifted, the rescue of rescue workers is prevented from being influenced by the rising of flood, on the other hand, after the bridge body is changed into the arch bridge, the support strength can be improved by utilizing the characteristics of the arch bridge, and the bridge is beneficial to disaster relief materials with large load or pedestrians to pass through.

The present invention is achieved by the mutual cooperation between the extension frame 8, the sliding frame 5, the sling 16 and the first electric telescopic rod 72, etc., which, in a first aspect, by controlling the first electric telescopic rod 72 to extend or contract according to the change of the pressure sensor 73, when the pressure value detected by the pressure sensor 73 is smaller than the preset pressure value, the first electric telescopic rod 72 is controlled to extend until the pressure value detected by the pressure sensor 73 is equal to the preset pressure value, when the pressure value detected by the pressure sensor 73 is greater than the preset pressure value, the first electric telescopic rod 72 is controlled to contract until the pressure value detected by the pressure sensor 73 is equal to the preset pressure value, the overall height of the cable frame 7 is adjusted by controlling the expansion amount, the compensation of the height of the top point of the sling 16 is realized, the sliding frame 5 and the extension frame 8 are respectively required to be tensioned at two ends of the sling 16, and the load capacity of the device is further improved; in the second aspect, the second electromagnetic bolt 851 of the extension frame 8 above the person falling into the water is controlled to contract, the first electric telescopic rods 72 below all corresponding slings 16 of the extension frame 8 above the person falling into the water are controlled to contract, so that the extension frame 8 above the person falling into the water to the last extension frame 8 rotate relative to the sliding frame 5, then the sliding frame 5 is pulled, the connecting point of the extension frame 8 above the person falling into the water and the adjacent extension frame 8 moves to the position above the person falling into the water, then the first electromagnetic bolt 82 corresponding to the second extension frame 8 is controlled to contract, so that the second extension frame 8 is separated from the first extension frame 8, and the first electric telescopic rods 72 are controlled to contract, so that the second extension frame 8 moves downwards to be close to the person falling into the water to rescue the person falling into the water, and the device can be used as an emergency bridge and can also be used as a rescue, thereby improving the applicability of the device; in the third aspect, the emergency bridge is converted into an arched emergency bridge by controlling the contraction and extension of the second electromagnetic bolt 851 and correspondingly and properly controlling the contraction and extension of the first electric telescopic rod 72, so that the bridge body is lifted, and the rescue of rescue workers is prevented from being influenced by the rise of flood; meanwhile, after the arch bridge is changed, the support strength can be improved by utilizing the characteristics of the arch bridge, and disaster relief materials with larger load or pedestrians can pass through the arch bridge.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.