CN112607676B - Advance and retreat formula emergency mechanical bridge ladder based on directional spoke meshing transmission - Google Patents
Advance and retreat formula emergency mechanical bridge ladder based on directional spoke meshing transmission Download PDFInfo
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- CN112607676B CN112607676B CN202011432418.1A CN202011432418A CN112607676B CN 112607676 B CN112607676 B CN 112607676B CN 202011432418 A CN202011432418 A CN 202011432418A CN 112607676 B CN112607676 B CN 112607676B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000005452 bending Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
- B66F11/046—Working platforms suspended from booms of the telescoping type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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Abstract
The invention discloses a forward and backward type emergency mechanical bridge ladder based on directional spoke meshing transmission, which comprises a frame, wherein two lifting mechanisms are symmetrically arranged on the frame, and one end of the frame is provided with a pushing frame; each lifting mechanism comprises a base, the lower part of the base is connected with a vehicle frame, a support frame, an automatic screw box, a screw positioning device and a driving device are respectively arranged above the base, the automatic screw box is connected with the screw positioning device, the support frame is connected with a bending and stretching device I, and one end of the bending and stretching device I is sequentially connected with a bending and stretching device II, a bending and stretching device III, a bending and stretching device IV and a hook; the two bending and stretching devices I, the bending and stretching devices II, the bending and stretching devices III and the bending and stretching devices IV are connected through a plurality of ladder boards at equal intervals. The bridge ladder solves the problems of complex structure and poor transmission effect of an emergency bridge ladder in the prior art.
Description
Technical Field
The invention belongs to the technical field of bridge ladders, and particularly relates to an advancing and retreating type emergency mechanical bridge ladder based on directional spoke meshing transmission.
Background
In the field of conventional fire and emergency machinery, the long-distance bending and stretching device has a wide application prospect, and can be particularly applied to the fields of military industry, civil engineering, emergency rescue and the like. In current telescoping device, some schemes are realized flexible through the counterpoint block of hold-in range, and some realize flexible through hydraulic transmission, and some realizes shrink etc. through the scaffold frame mode of building progressively, and its relevant scheme all has great problem. Firstly, the expansion and contraction are realized through the alignment and the clamping of the synchronous belts, and the biggest problems are that the stress performance of the synchronous belts is poor, the strength of the connection points of the synchronous belts is not enough, and the phenomena of output fracture and bending of the expansion and contraction device are easy to happen suddenly in a long distance; secondly, the hydraulic transmission cost is relatively high, the transmission matching construction is large, and the engineering construction economy is not realized; finally, the scaffold is gradually built in a traditional telescopic mode, so that the telescopic efficiency is low, the manual construction cost is high and the like; it is necessary to use a highly efficient flexion-extension transmission. The existing bending and stretching device has the problems of insufficient strength, poor economic benefit, low bending and stretching automation degree and the like, and the engineering practical construction requirements are difficult to meet. The existing transmission structure is complex, engineering construction is complex, the application range is relatively limited, the cost is high, the assembly is complex, and finally the production cost is relatively high.
At present, for the field of bending and stretching devices and methods, the existing related machines have the defects of complex structure, high manufacturing cost, high requirements on manufacturing and assembling, complex assembling process, difficult maintenance and the like, and the reduction of the process difficulty through structural optimization is already the mainstream trend of the field of bending and stretching devices and methods.
In all transmission modes, the gear rack transmission is widely applied in various engineering practice fields due to the high-efficiency transmission ratio and reliability of the gear rack transmission. The gear rack is applied to the traditional structure of a flexible system, so that the precision and stability of transmission can be guaranteed, and the gear rack also has an important practical engineering practice effect on the transmission efficiency.
Disclosure of Invention
The invention aims to provide an advancing and retreating type emergency mechanical bridge ladder based on directional spoke meshing transmission, and solves the problems of complex structure and poor transmission effect of the mechanical bridge ladder in the prior art.
The invention adopts the technical scheme that the advancing and retreating type emergency mechanical bridge ladder based on the directional spoke meshing transmission comprises a frame, wherein two lifting mechanisms are symmetrically arranged on the frame, and one end of the frame is provided with a pushing frame;
each lifting mechanism comprises a base, the lower part of the base is connected with a vehicle frame, a support frame, an automatic screw box, a screw positioning device and a driving device are respectively arranged above the base, the automatic screw box is connected with the screw positioning device, the support frame is connected with a bending and stretching device I, and one end of the bending and stretching device I is sequentially connected with a bending and stretching device II, a bending and stretching device III, a bending and stretching device IV and a hook;
the two bending and stretching devices I, the bending and stretching devices II, the bending and stretching devices III and the bending and stretching devices IV are connected through a plurality of ladder boards at equal intervals.
The present invention is also characterized in that,
the frame comprises a frame plate, one side surface of the frame plate is symmetrically provided with a group of bases, the other side surface of the frame plate is provided with a plurality of wrestling supports, each wrestling support is internally sleeved with an axle, and two ends of the axle are provided with wheels;
the one end that frame plate and axletree are parallel and keep away from the couple is passed through the extension board that is connected with two L types of connecting plate symmetry, and the department of bending of every extension board is provided with the reinforcing plate, and the one end that frame plate was kept away from to two extension boards is passed through the push pedal and is connected.
Each automatic screw box comprises a foot support I connected with the upper surface of the machine base, an inner groove is formed in the foot support I, a positioning shell is clamped in the inner groove through a buckle, a screw groove is formed in the positioning shell, a screw is arranged in the screw groove, an ejection spring is arranged in the position, located in the screw groove, of the inner groove of the foot support I, the top end of the positioning shell is of a through hole concave structure, and a screw positioning device is arranged at the top end of the positioning shell.
Every screw positioner includes the foot II with frame upper surface connection, and foot II is connected with the one end of bracing piece, and the other end and the minor axis II of bracing piece are connected, and the both ends of minor axis II are connected with anchor clamps, are connected with motor II between the anchor clamps, and motor II sets up on the top through-hole "concave" type structure of location shell.
Every drive arrangement is including parallel arrangement in guide rail I and the guide rail II of frame upper surface, be provided with slider I on the guide rail I, be connected with free bearing II on the slider I, be provided with slider II on the guide rail, be connected with free bearing III on the slider II, free bearing III passes through I connection of step shaft with free bearing II, free bearing I has been cup jointed to the outside of step shaft I, be connected with motor I on the free bearing I, the output of motor I is connected with gear I, I side shaft hub connection of step shaft and be located free bearing I has gear II, gear II meshes has rack V, rack V sets up in the upper surface of frame, the end connection that step shaft I is close to rack V has the rotation valve hand, the edge of rotation valve hand is provided with and waves the pendulum rod.
Every device I of stretching of crouching is provided with a pair of guide rail III including the device I of stretching of crouching, bends the outside upper surface of stretching body I, is provided with slider III on a pair of guide rail III, and slider III is connected with the roof of support frame, bends the bottom of stretching body I and is provided with rack I, and rack I is connected with the device II of stretching of crouching with I meshing of gear I.
Each flexion and extension device II comprises a flexion and extension body II, a rack II is arranged at the bottom end of the flexion and extension body II, the rack II and the rack I are arranged on the same side, the rack II is meshed with the gear I, a pair of guide rails IV is arranged on the upper surface of the outer side of the flexion and extension body II, a slide rail I is arranged on the pair of guide rails IV, and the slide rail I is connected with the top of the inner side of the flexion and extension body I.
Each flexion and extension device III comprises a flexion and extension body III, a rack III is arranged at the bottom end of the flexion and extension body III, the rack III and the rack II are arranged on the same side, the rack III is meshed with the gear I, a pair of guide rails V is arranged on the upper surface of the outer side of the flexion and extension body III, a slide rail II is arranged on the pair of guide rails V, and the slide rail II is connected with the top of the inner side of the flexion and extension body II.
Each bending and stretching device IV comprises a bending and stretching body IV, a rack IV is arranged at the bottom end of the bending and stretching body IV, the rack IV and the rack III are arranged on the same side, the rack IV is meshed with a gear I, guide rails VI are arranged on the upper surface of the outer side of the bending and stretching body IV, a pair of guide rails VI are provided with slide rails III, the slide rails III are connected with the tops of the inner sides of the bending and stretching body III, one end, far away from the bending and stretching body III, of the bending and stretching body IV is connected with one side face of a connecting block, the other side face of the connecting block is connected with a flange, and the flange is connected with a hook.
A plurality of through groove holes are symmetrically arranged on the two flexion-extension bodies I, the two flexion-extension bodies II, the two flexion-extension bodies III and the two flexion-extension bodies IV at equal intervals, and every two symmetrical through groove holes are connected through a step plate;
the ladder board comprises hook blocks arranged in the through groove holes, and every two symmetrical hook blocks are connected through the main board.
The invention has the beneficial effects that: the advancing and retreating type emergency mechanical bridge ladder based on the directional spoke meshing transmission has the characteristics that the construction cost is low, the principle structure is simpler than that of the existing bending and stretching device, the mounting of the bending and stretching movement measures of the previous similar products is reduced, and the transmission effect is good; the transmission of a mechanical system is realized through the meshing of the gear and the rack, the better flexibility of the product is ensured, and the flexibility strength of the system is enhanced, so that the product cost is reduced, the movement and the flexible extension are convenient, and the long-distance emergency telescopic operation is convenient.
Drawings
FIG. 1 is a schematic structural diagram of a forward and backward type emergency mechanical bridge ladder based on directional spoke meshing transmission;
FIG. 2 is a schematic structural diagram of a driving device of a forward and backward type emergency mechanical bridge ladder based on directional spoke meshing transmission;
FIG. 3 is a schematic structural diagram of a screw positioning device and an automatic screw box of an advancing and retreating type emergency mechanical bridge ladder based on directional spoke meshing transmission;
FIG. 4 is a side view of a forward and reverse emergency mechanical bridge ladder based on directional spoke engagement transmission of the present invention;
FIG. 5 is a perspective view of an advancing and retreating type emergency mechanical bridge ladder based on directional spoke engagement transmission according to the present invention;
FIG. 6 is an enlarged partial view of the step plate of an advancing and retreating type emergency mechanical bridge ladder based on directional spoke engagement transmission according to the present invention;
FIG. 7 is an enlarged view of the drive assembly in an advancing and retreating type emergency mechanical bridge ladder based on directional spoke engagement transmission of the present invention;
fig. 8 is an enlarged view of the automatic screw magazine and screw positioning device in an advancing and retreating emergency mechanical bridge ladder based on directional spoke engagement transmission of the present invention.
In the figure, 1, a machine base, 2, a driving device, 3, an automatic screw box, 4, a screw positioning device, 5, a bending and stretching device I, 6, a supporting frame, 7, a bending and stretching device II, 8, a bending and stretching device III, 9, a bending and stretching device IV, 10, a hook, 11, a step plate, 12, a pushing frame and 13 are arranged on a frame;
2-1, a motor I, 2-2, a stepped shaft I, 2-3, a hinged support I, 2-4, a hinged support II, 2-5, a sliding block I, 2-6, a guide rail I, 2-7, a gear II, 2-8, a hinged support III, 2-9, a rotary valve handle, 2-10, a sliding block II, 2-11, a rocking swing rod, 2-12, a rack V, 2-13, a guide rail II, 2-14 and a gear I;
3-1, a foot support I, 3-2, an ejection spring, 3-3, a positioning shell and 3-4 screws;
4-1, a foot support II, 4-2, a support rod, 4-3, a short shaft II, 4-4, a motor II, 4-5 and a clamp;
5-1, a bending and stretching body I, 5-2, a rack I, 5-3 and a guide rail III;
7-1, a flexion-extension body II, 7-2, a rack II, 7-3, a guide rail IV, 7-4, a slide rail I;
8-1, 8-2, 8-3, 8-4 and V rack;
9-1, 9-2 of a bending and stretching body IV, 9-3 of a rack IV, 9-3 of a sliding rail III, 9-4 of a guide rail VI;
10-1, a connecting block, 10-2, a flange plate and 10-3, a hook;
11-1, a main board, 11-2, a hook block;
12-1 parts of push plate, 12-2 parts of support plate, 12-3 parts of reinforcing plate and 12-4 parts of connecting plate;
13-1, frame plate, 13-2, wrestle, 13-3, axle and 13-4 wheels.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to an advancing and retreating type emergency mechanical bridge ladder based on directional spoke meshing transmission, which comprises a frame 13, wherein two lifting mechanisms are symmetrically arranged on the frame 13, a pushing frame 12 is arranged at one end of the frame 13, each lifting mechanism comprises a base 1, the lower part of each base 1 is connected with the frame 13, a supporting frame 6, an automatic screw box 3, a screw positioning device 4 and a driving device 2 are respectively arranged above each base 1, the automatic screw box 3 is connected with the screw positioning device 4, the supporting frame 6 is connected with a bending and stretching device I5, and one end of the bending and stretching device I5 is sequentially connected with a bending and stretching device II 7, a bending and stretching device III 8, a bending and stretching device IV 9 and a hook 10;
the two bending and stretching devices I5, the bending and stretching device II 7, the bending and stretching device III 8 and the bending and stretching device IV 9 are connected through a plurality of ladder boards 11 at equal intervals.
The frame 13 comprises a frame plate 13-1, a group of bases 1 are symmetrically connected to one side surface of the frame plate 13-1 through screws, a plurality of wrestling brackets 13-2 are connected to the other side surface of the frame plate 13-1 through screws, an axle 13-3 is sleeved in each group of wrestling brackets 13-2, and wheels 13-4 are arranged at two ends of the axle 13-3;
the pushing frame 12 comprises a support plate 12-2, one end, parallel to the axle 13-3 and far away from the hook 10, of the frame plate 13-1 is symmetrically connected with two L-shaped support plates 12-2 through a connecting plate 12-4, a reinforcing plate 12-3 is arranged at the bending part of each support plate 12-2, one ends, far away from the frame plate 13-1, of the two support plates 12-2 are connected through a pushing plate 12-1 through screws, and the pushing frame 12 facilitates relevant personnel to move the whole device.
As shown in figures 3 and 8, each automatic screw box 3 comprises a foot support I3-1 connected with the upper surface of the machine base 1, an inner groove is arranged in the foot support I3-1, a positioning shell 3-3 is clamped in the inner groove through a buckle, a screw groove is formed in the positioning shell 3-3 in a compression molding mode, a plurality of screws 3-4 are arranged in the screw groove, the screws 3-4 are arranged in vertical rows, an ejection spring 3-2 is arranged in the inner groove of the foot support I3-1 and positioned in the screw groove, the ejection spring 3-2 acts on the screws 3-4 arranged in the vertical rows in a jacking mode to realize automatic ejection of the screws 3-4, the top end of the positioning shell 3-3 is of a through hole concave structure, and a screw positioning device 4 is arranged at the top end of the positioning shell 3-3.
Each screw positioning device 4 comprises a foot support II 4-1 which is connected with the upper surface of the base 1 through a bolt, the foot support II 4-1 is connected with one end of a supporting rod 4-2 through a welding mode, the other end of the supporting rod 4-2 is connected with a short shaft II 4-3, two ends of the short shaft II 4-3 are connected with clamps 4-5 through screws, a motor II 4-4 is connected between the clamps 4-5 through the screws, the motor II 4-4 is arranged on a concave structure of a through hole at the top end of the positioning shell 3-3, the motor II 4-4 orients to push the screw 3-4 out of a screw groove position so that the screw 3-4 is connected and positioned with the bending and stretching device I5, the bending and stretching device II 7, the bending and stretching device III 88 or the bending and stretching device IV 9, or the motor II 4-4 relaxes the screw 3-4 back into the screw groove position.
As shown in figures 2 and 7, each driving device 2 comprises guide rails I2-6 and guide rails II 2-13 which are arranged on the upper surface of a machine base 1 in parallel, a sliding block I2-5 is arranged on the guide rails I2-6, the sliding block I2-5 slides on the guide rails I2-6, the sliding block I2-5 is connected with a hinged support II 2-4 through a screw, a sliding block II 2-10 is arranged on the guide rails II 2-13, the sliding block II 2-10 slides on the guide rails II 2-13, the sliding block II 2-10 is connected with a hinged support III 2-8 through a screw, the hinged support III 2-8 is connected with the hinged support II 2-4 through a stepped shaft I2-2, two ends of the stepped shaft I2-2 are fixed with end covers through bearings on through holes of the hinged support III 2-8 and the hinged support II 2-4, the hinged support I2-3 is fixed with the hinged support III 2-8 through a pin, the hinge I2-3 is sleeved outside the stepped shaft I2-2, the hinge I2-3 is connected with a motor I2-1 through a screw, the output end of the motor I2-1 is connected with a gear I2-14 through a shaft hub, the gear II 2-7 is connected on the stepped shaft I2-2 and located on the side face of the hinge I2-3 through a shaft hub, the gear II 2-7 is meshed with a rack V2-12 to drive the motor I2-1 to realize lane change transmission, the rack V2-12 is arranged on the upper surface of the base 1, a port extending out of a key groove is formed in the end portion, close to the rack V2-12, of the stepped shaft I2-2, the port of the stepped shaft I2-2 is connected with a rotary valve handle 2-9 through a shaft hub, and a shaking swing rod 2-11 is arranged at the edge of the rotary valve handle 2-9.
Each flexion-extension device I5 comprises a flexion-extension device I5, the upper surface of the outer side of the flexion-extension body I5-1 is connected with a pair of guide rails III 5-3 through counter bore screws, the pair of guide rails III 5-3 are arranged in parallel, a slide block III is arranged on the pair of guide rails III 5-3, the slide block III is connected with a top plate of the support frame 6 through bolts, a rack I5-2 is arranged at the bottom end of the flexion-extension body I5-1, the rack I5-2 is meshed with a gear I2-14, and the inner side of the flexion-extension body I5-1 is connected with a flexion-extension device II 7 through the counter bore screws.
Each flexion-extension device II 7 comprises a flexion-extension body II 7-1, a rack II 7-2 is arranged at the bottom end of the flexion-extension body II 7-1, the rack II 7-2 is arranged on the same side as the rack I5-2, the rack II 7-2 is meshed with a gear I2-14, the upper surface of the outer side of the flexion-extension body II 7-1 is connected with a pair of guide rails IV 7-3 through counter bore screws, the pair of guide rails IV 7-3 are arranged in parallel, a slide rail I7-4 is arranged on the pair of guide rails IV 7-3, and the slide rail I7-4 is connected with the top of the inner side of the flexion-extension body I5-1 through counter bore screws.
Each flexion-extension device III 8 comprises a flexion-extension body III 8-1, a rack III 8-2 is arranged at the bottom end of the flexion-extension body III 8-1, the rack III 8-2 and the rack II 7-2 are arranged on the same side, the rack III 8-2 is meshed with a gear I2-14, the upper surface of the outer side of the flexion-extension body III 8-1 is connected with a pair of guide rails V8-4 through counter bore screws, the pair of guide rails V8-4 are connected in parallel, a slide rail II 8-3 is arranged on the pair of guide rails V8-4, and the slide rail II 8-3 is connected with the top of the inner side of the flexion-extension body II 7-1 through counter bore screws.
Each flexion-extension device IV 9 comprises a flexion-extension body IV 9-1, a rack IV 9-2 is arranged at the bottom end of the flexion-extension body IV 9-1, the rack IV 9-2 and a rack III 8-2 are arranged on the same side, the rack IV 9-2 is meshed with a gear I2-14, the upper surface of the outer side of the flexion-extension body IV 9-1 is connected with a pair of guide rails VI 9-4 through counter bore screws, the pair of guide rails VI 9-4 are arranged in parallel, the pair of guide rails VI 9-4 are provided with slide rails III 9-3, the slide rails III 9-3 and the top of the inner side of the flexion-extension body III 8-1 are connected through counter bore screws, one end of the flexion-extension body IV 9-1 far away from the flexion-extension body III 8-1 is connected with one side face of a connecting block 10-1, the other side face of the connecting block 10-1 is connected with a flange 10-2, the flange 10-2 is connected with a hook 10-3, hook 10-3 may be attached to an exterior architectural feature of a building or to a ground feature opposite a river channel.
Positioning holes are uniformly arranged on the side walls of the flexion-extension body I5-1, the flexion-extension body II 7-1, the flexion-extension body III 8-1 and the flexion-extension body IV 9-1, and are arranged on the same side as the rack I5-2.
The gear I2-14 is meshed with the rack IV 9-2, the rack III 8-2, the rack II 7-2 and the rack I5-2 in a staged manner, so that the bending and stretching operation is realized.
As shown in fig. 1, a plurality of through slots are symmetrically arranged on two flexion-extension bodies I5-1, two flexion-extension bodies II 7-1, two flexion-extension bodies III 8-1 and two flexion-extension bodies IV 9-1 at equal intervals, and every two symmetrical through slots are connected through a step plate 11;
as shown in FIG. 6, the step 11 includes hook blocks 11-2 disposed in the through-slot holes, each two symmetrical hook blocks 11-2 are connected by a main plate 11-1, and the main plate 11-1 and the hook blocks 11-2 are connected by bolts.
The motor I2-1 and the motor II 4-4 both adopt intermittent stepping motors.
When the bending and stretching machine is used, the motor I2-1 is started, the gear I2-14 rotates, the rocking swing rod 2-11 rotates according to needs to enable the gear II to move on the rack V2-12, the gear I2-14 is meshed with the rack IV 9-2, the rack III 8-2, the rack II 7-2 and the rack I5-2 in a staged mode to achieve bending and stretching operation, after the bending and stretching machine is bent and stretched to a proper position, the motor II 4-4 is started, the screw 3-4 is pushed into a positioning hole in the side wall of the bending and stretching body I to be positioned, and after the hook 10 is hung at a fixable position, a worker climbs upwards through the main board.
Claims (7)
1. An advancing and retreating type emergency mechanical bridge ladder based on directional spoke meshing transmission is characterized by comprising a frame (13), wherein two lifting mechanisms are symmetrically arranged on the frame (13), and one end of the frame (13) is provided with a pushing frame (12);
each lifting mechanism comprises a base (1), the lower part of the base (1) is connected with a frame (13), a support frame (6), an automatic screw box (3), a screw positioning device (4) and a driving device (2) are respectively arranged above the base (1), the automatic screw box (3) is connected with the screw positioning device (4), the support frame (6) is connected with a flexion and extension device I (5), and one end of the flexion and extension device I (5) is sequentially connected with a flexion and extension device II (7), a flexion and extension device III (8), a flexion and extension device IV (9) and a hook (10);
the two bending and stretching devices I (5), the bending and stretching device II (7), the bending and stretching device III (8) and the bending and stretching device IV (9) are connected through a plurality of ladder boards (11) at equal intervals;
each automatic screw box (3) comprises a foot support I (3-1) connected with the upper surface of the machine base (1), an inner groove is formed in the foot support I (3-1), a positioning shell (3-3) is clamped in the inner groove through a buckle, a screw groove position is formed in the positioning shell (3-3), a screw (3-4) is arranged in the screw groove position, an ejection spring (3-2) is arranged in the inner groove of the foot support I (3-1) and positioned at the screw groove position, the top end of the positioning shell (3-3) is of a through hole concave structure, and a screw positioning device (4) is arranged at the top end of the positioning shell (3-3);
each screw positioning device (4) comprises a foot support II (4-1) connected with the upper surface of the base (1), the foot support II (4-1) is connected with one end of a supporting rod (4-2), the other end of the supporting rod (4-2) is connected with a short shaft II (4-3), two ends of the short shaft II (4-3) are connected with clamps (4-5), a motor II (4-4) is connected between the clamps (4-5), and the motor II (4-4) is arranged on a concave structure of a through hole at the top end of a positioning shell (3-3);
each driving device (2) comprises a guide rail I (2-6) and a guide rail II (2-13) which are arranged on the upper surface of the base (1) in parallel, a sliding block I (2-5) is arranged on the guide rail I (2-6), a hinged support II (2-4) is connected to the sliding block I (2-5), a sliding block II (2-10) is arranged on the guide rail II (2-13), a hinged support III (2-8) is connected to the sliding block II (2-10), the hinged support III (2-8) is connected to the hinged support II (2-4) through a stepped shaft I (2-2), the hinged support I (2-3) is sleeved outside the stepped shaft I (2-2), a motor I (2-1) is connected to the hinged support I (2-3), a gear I (2-14) is connected to the output end of the motor I (2-1), the improved step shaft type swing arm device is characterized in that a gear II (2-7) is connected to the shaft hub on the side of the hinged support I (2-3) on the step shaft I (2-2), a rack V (2-12) is meshed with the gear II (2-7), the rack V (2-12) is arranged on the upper surface of the base (1), the end portion, close to the rack V (2-12), of the step shaft I (2-2) is connected with a rotation valve hand (2-9), and the edge of the rotation valve hand (2-9) is provided with a swing rod (2-11).
2. The driving and reversing type emergency mechanical bridge ladder based on directional spoke meshing transmission is characterized in that the frame (13) comprises a frame plate (13-1), one group of bases (1) is symmetrically arranged on one side surface of the frame plate (13-1), a plurality of groups of wrestling brackets (13-2) are arranged on the other side surface of the frame plate (13-1), an axle (13-3) is sleeved in each group of wrestling brackets (13-2), and wheels (13-4) are arranged at two ends of the axle (13-3);
the pushing frame (12) comprises two L-shaped support plates (12-2), the two support plates (12-2) are symmetrically connected to one end, parallel to the axle (13-3), of the frame plate (13-1) through a connecting plate (12-4) and far away from the hook (10), a reinforcing plate (12-3) is arranged at the bending position of each support plate (12-2), and one ends, far away from the frame plate (13-1), of the two support plates (12-2) are connected through a pushing plate (12-1).
3. The advancing and retreating type emergency mechanical bridge ladder based on directional wheel strip meshing transmission is characterized in that each flexing and stretching device I (5) comprises a flexing and stretching body I (5-1), a pair of guide rails III (5-3) are arranged on the upper surface of the outer side of the flexing and stretching body I (5-1), a sliding block III is arranged on the pair of guide rails III (5-3), the sliding block III is connected with a top plate of a supporting frame (6), a rack I (5-2) is arranged at the bottom end of the flexing and stretching body I (5-1), the rack I (5-2) is meshed with a gear I (2-14), and a flexing and stretching device II (7) is connected to the inner side of the flexing and stretching body I (5-1).
4. The advancing and retreating type emergency mechanical bridge ladder based on directional wheel strip meshing transmission is characterized in that each flexing and stretching device II (7) comprises a flexing and stretching body II (7-1), a rack II (7-2) is arranged at the bottom end of the flexing and stretching body II (7-1), the rack II (7-2) and the rack I (5-2) are arranged on the same side, the rack II (7-2) is meshed with a gear I (2-14), a pair of guide rails IV (7-3) are arranged on the upper surface of the outer side of the flexing and stretching body II (7-1), a pair of slide rails I (7-4) are arranged on the guide rails IV (7-3), and the slide rails I (7-4) are connected with the top of the inner side of the flexing and stretching body I (5-1).
5. The advancing and retreating type emergency mechanical bridge ladder based on directional wheel strip meshing transmission is characterized in that each flexing and stretching device III (8) comprises a flexing and stretching body III (8-1), a rack III (8-2) is arranged at the bottom end of the flexing and stretching body III (8-1), the rack III (8-2) and the rack II (7-2) are arranged on the same side, the rack III (8-2) is meshed with a gear I (2-14), a pair of guide rails V (8-4) is arranged on the upper surface of the outer side of the flexing and stretching body III (8-1), a slide rail II (8-3) is arranged on the pair of guide rails V (8-4), and the slide rail II (8-3) is connected with the top of the inner side of the flexing and stretching body II (7-1).
6. The advancing and retreating type emergency mechanical bridge ladder based on directional wheel strip meshing transmission is characterized in that each flexing and extending device IV (9) comprises a flexing and extending body IV (9-1), a rack IV (9-2) is arranged at the bottom end of the flexing and extending body IV (9-1), the rack IV (9-2) and the rack III (8-2) are arranged on the same side, the rack IV (9-2) is meshed with a gear I (2-14), a guide rail VI (9-4) is arranged on the upper surface of the outer side of the flexing and extending body IV (9-1), a pair of guide rails VI (9-4) are provided with a slide rail III (9-3), the slide rail III (9-3) is connected with the top of the inner side of the flexing and extending body III (8-1), one end, far away from the flexing and extending body III (8-1), of the flexing and extending body IV (9-1) is connected with one side surface of a connecting block (10-1) The other side surface of the connecting block (10-1) is connected with a flange plate (10-2), and the flange plate (10-2) is connected with a hook (10-3).
7. The advancing-retreating type emergency mechanical bridge ladder based on directional spoke meshing transmission is characterized in that a plurality of through slots are symmetrically arranged on two stretching bodies I (5-1), two stretching bodies II (7-1), two stretching bodies III (8-1) and two stretching bodies IV (9-1) at equal intervals, and every two symmetrical through slots are connected through a ladder plate (11);
the ladder board (11) comprises hook rails (11-2) arranged in the through groove holes, and every two symmetrical hook rails (11-2) are connected through a main board (11-1).
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| CN202011432418.1A CN112607676B (en) | 2020-12-09 | 2020-12-09 | Advance and retreat formula emergency mechanical bridge ladder based on directional spoke meshing transmission |
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| CN202011432418.1A CN112607676B (en) | 2020-12-09 | 2020-12-09 | Advance and retreat formula emergency mechanical bridge ladder based on directional spoke meshing transmission |
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Effective date of registration: 20230720 Address after: No. 95 Nanhai Road, Binhai New Area Development Zone, Tianjin, 300450 Patentee after: TIANJIN JINYA ELECTRONICS Co.,Ltd. Address before: 230000 b-1018, Woye Garden commercial office building, 81 Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee before: HEFEI WISDOM DRAGON MACHINERY DESIGN Co.,Ltd. |
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