CN117905259B - Mobile supporting platform for tunnel engineering construction - Google Patents
Mobile supporting platform for tunnel engineering construction Download PDFInfo
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- CN117905259B CN117905259B CN202410317905.5A CN202410317905A CN117905259B CN 117905259 B CN117905259 B CN 117905259B CN 202410317905 A CN202410317905 A CN 202410317905A CN 117905259 B CN117905259 B CN 117905259B
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000004140 cleaning Methods 0.000 claims description 19
- 210000001503 joint Anatomy 0.000 claims description 17
- 238000007790 scraping Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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Abstract
The invention relates to the field of tunnel construction, in particular to a movable supporting platform for tunnel engineering construction. The scaffold comprises a scaffold body and a plurality of travelling wheels arranged at the bottom of the scaffold body; each travelling wheel comprises a wheel seat, a middle wheel frame and two side wheel frames, and the bottoms of the middle wheel frame and the side wheel frames are respectively provided with a rotatable roller; the middle wheel frame and the side wheel frames are both hinged to the wheel seat, a first elastic piece is connected between the two side wheel frames, and a second elastic piece is connected between the middle wheel frame and the wheel seat; friction structures are arranged between the middle wheel frame and the roller on the middle wheel frame and between the side wheel frame and the roller on the side wheel frame, the middle wheel frame and the side wheel frame are of an upper-lower split splicing structure, and the two parts can coaxially and relatively rotate or stop rotating. The travelling wheel can switch states according to working conditions, so that the scaffold has different use states under different conditions of construction operation, and has good adaptability, simple and convenient operation, stable support and high safety.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a movable supporting platform for tunnel engineering construction.
Background
At present, construction enterprises such as highways, railways, subways and the like in China develop very rapidly, but a plurality of challenges are faced, for example, tunnels are required to be excavated when subways are built or highway railways are built in mountain areas so as to optimize paths, support platforms are required to be used for assisting in the tunnel excavation and construction processes, and scaffolds are widely used as the most common support platforms in the tunnel construction.
The scaffold in the related art is generally of a fixed structure, for example, a scaffold for tunnel construction disclosed in chinese patent document CN111519881B, and when the scaffold needs to be moved to a next construction site, the scaffold needs to be re-built at a new construction site, which is very inconvenient to use. In order to improve the convenience of use, a movable scaffold is provided in the related art, for example, chinese patent document with the authority bulletin number CN106351431B discloses a continuously constructed movable working platform for a rail transit tunnel, the movable working platform is provided with a sliding support and a roller on the movable support, and the movable working platform can be pushed to walk along a rail by the roller, but the above scheme needs to use a support body to abut against the movable working platform to limit the movement of the movable working platform when stopping, and has the advantages of complicated structure, complex operation and low safety factor, meanwhile, the scaffold can meet various working conditions, such as no-load movement, load movement or manned construction, and the like, in the auxiliary construction process, the movable platform can not adjust the working state according to the working condition, the use condition is single, and the adaptability is poor.
The information disclosed in the background section of the application is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
According to the defects of the prior art, the invention provides the mobile support platform for tunnel engineering construction, which can adjust the working state according to the use condition, and has flexible use, stable support and high safety.
The invention relates to a tunnel engineering construction mobile support platform which adopts the following technical scheme: the scaffold comprises a scaffold body and a plurality of travelling wheels arranged at the bottom of the scaffold body;
Each travelling wheel comprises a wheel seat, a middle wheel frame and two side wheel frames, and the bottoms of the middle wheel frame and the side wheel frames are respectively provided with a rotatable roller; the middle wheel frame and the side wheel frames are hinged to the wheel seat, the rotation axes of the middle wheel frame extend along a first direction, the rotation axes of the two side wheel frames extend along a second direction, the first direction and the second direction are horizontal and mutually perpendicular, and the middle wheel frame is positioned in the middle of the two side wheel frames along the first direction and positioned on one side of the two side wheel frames along the second direction; a first elastic piece is connected between the two side wheel frames, and a second elastic piece is connected between the middle wheel frame and the wheel seat;
Friction structures are arranged between the middle wheel frame and the roller on the middle wheel frame and between the side wheel frame and the roller on the side wheel frame, the middle wheel frame and the side wheel frame are of an upper-lower split splicing structure, and the two parts can coaxially and relatively rotate or stop rotating;
The travelling wheel is provided with a first state, a second state and a third state; when the travelling wheel is in the first state, the three rollers are coaxial, and the friction structure is invalid; when the travelling wheels are in the second state, the two side wheel frames are synchronously opened to two sides, the middle wheel frame swings in a direction away from the side wheel frames, three rollers form a triangular posture, and the friction structure is effective; when the travelling wheel is in a third state, the upper part and the lower part of the middle wheel frame and the side wheel frame are rotated relatively, and the three rollers form a stable state with uniformly distributed circumferences.
Optionally, the main body of the wheel seat is an L-shaped plate-shaped member, the middle wheel frame is hinged to the inner top surface of the wheel seat, and the side wheel frame is hinged to the inner side surface of the wheel seat;
The two sides of the inner side surface of the wheel seat are provided with a first limiting block which is used for limiting the maximum swing angle of the corresponding side wheel frame; the middle part below the inner side surface of the wheel seat is provided with a second limiting block, the second limiting block is used for limiting the limiting position of the middle wheel frame to swing in the direction close to the side wheel frame, the first hinge seat is provided with a stop block, and the stop block is used for limiting the limiting position of the middle wheel frame to swing in the direction far away from the side wheel frame.
Optionally, each side wheel frame is provided with a meshing gear, and the meshing gears on the two side wheel frames are meshed with each other.
Optionally, the friction structure comprises a friction disc, wherein the friction disc is arranged on one side of the two side wheel frames, which are close to each other, and on two sides of the middle wheel frame; the friction disc and corresponding gyro wheel synchronous rotation and with corresponding gyro wheel coaxial sliding connection, the periphery wall of friction disc is provided with first friction arch, be provided with the second friction arch on well wheel carrier and the side wheel carrier, be provided with the fourth elastic component between friction disc and the corresponding gyro wheel, initial fourth elastic component makes the friction disc slide to the direction of keeping away from corresponding gyro wheel, and then make first friction arch and corresponding second friction arch align to contact, when the wheel of walking is in first state, well wheel carrier and side wheel carrier hug closely, the friction disc on it extrudees each other, the friction disc moves to the direction that is close to corresponding gyro wheel, make first friction arch and second friction arch dislocation.
Optionally, a jack is coaxially arranged on the rotating shaft of the roller, a plug shaft is coaxially arranged on the friction disc, and the plug shaft penetrates through the corresponding middle wheel frame or the side wheel frame and is slidably inserted into the jack and is connected with the jack through a guide key.
Optionally, the middle wheel frame and the side wheel frame comprise an upper frame body and a lower frame body, the idler wheels are rotatably connected to the lower frame body, a butt joint groove is formed in the upper frame body, a locking position and an unlocking position are arranged in the butt joint groove, four switching blocks are arranged at the locking position, a switching groove is formed between two adjacent switching blocks, and the unlocking position is located below the locking position; the lower frame body is provided with a butt joint shaft, the peripheral wall of the top end of the butt joint shaft is provided with two locking blocks which are positioned on the same straight line, the butt joint shaft is inserted into the butt joint groove, and the locking blocks can be inserted into the switching groove.
Optionally, the included angle of the two groups of switching grooves on the middle wheel frame, which are positioned on the same straight line, is 90 degrees, and the included angle of the two groups of switching grooves on the side wheel frame, which are positioned on the same straight line, is 60 degrees.
Optionally, the wheel seat is further provided with a cleaning plate, the cleaning plate is hinged to the wheel seat and the hinge axis extends along the first direction, a third elastic piece is connected between the cleaning plate and the wheel seat, the third elastic piece enables the cleaning plate to approach to the direction of the rollers, the cleaning plate is provided with arched scraping grooves, and when the travelling wheel is in a first state, the scraping grooves are in one-to-one correspondence with the three rollers and are inserted outside the corresponding rollers.
Optionally, the third elastic member is a spring.
Optionally, the first elastic member and the second elastic member are springs.
The beneficial effects of the invention are as follows: according to the mobile support platform for tunnel engineering construction, the travelling wheels are arranged at the bottom of the scaffold body, each travelling wheel comprises the middle wheel frame and the two side wheel frames, the rotatable rollers are arranged at the bottoms of the middle wheel frame and the side wheel frames, and the angles of the side wheel frames, the middle wheel frame and the rollers can be adjusted, so that the travelling wheels can be switched according to working conditions, and further, under different conditions of construction operation, the scaffold has different use states, has good adaptability, is simple and convenient to operate, is stable to support, and has high safety.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the whole structure of a mobile support platform for tunnel engineering construction;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of the running wheel of the present invention;
FIG. 4 is a perspective view of the running wheel of the present invention;
FIG. 5 is an exploded view of the running gear of the present invention;
FIG. 6 is a schematic structural view of a wheel mount of the road wheel;
FIG. 7 is an overall block diagram of the wheel carrier and the roller of the road wheel;
FIG. 8 is an exploded view of FIG. 7;
FIG. 9 is an exploded view of the center frame;
FIG. 10 is a cross-sectional view of the center frame;
FIG. 11 is a schematic structural view of an upper frame body of the middle wheel frame;
FIG. 12 is a schematic view of the structure of the friction disk and its upper components;
fig. 13 is a schematic view of the structure of the road wheel in the second state;
Fig. 14 is another angular structural schematic view of the road wheel in the second state;
fig. 15 is a distribution diagram of three rollers with the road wheel in a third state.
In the figure:
100. A scaffold body; 110. a cross bar; 120. a vertical rod; 130. a support plate; 140. diagonal bracing;
300. a walking wheel;
310. a wheel seat; 311. a hinge shaft; 312. a first hinge base; 313. the second hinge seat; 314. a first limiting block; 315. a second limiting block; 317. a stop block;
320. A side wheel frame; 321. a through hole; 322. meshing teeth; 323. a first elastic member;
330. A middle wheel frame; 331. a first rotating shaft; 332. a connecting block; 333. a second friction protrusion; 334. a locking piece; 335. a switching groove; 336. a second elastic member;
350. A roller; 351. a jack;
360. A friction plate; 361. inserting a shaft; 362. a fourth elastic member; 364. a first friction protrusion;
380. a cleaning plate; 381. a third elastic member; 382. a second rotating shaft; 383. scraping grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 15, the mobile support platform for tunnel engineering construction provided by the embodiment of the invention comprises a scaffold body 100 and a plurality of travelling wheels 300, wherein the plurality of travelling wheels 300 are arranged at the bottom of the scaffold body 100, and the plurality of travelling wheels 300 are used for supporting or driving the scaffold body 100 to move; specifically, the scaffold body 100 is integrally in a quadrangular frame structure, and has four corners, four travelling wheels 300 are respectively disposed at the four corners of the scaffold body 100, so that the scaffold body 100 can change direction conveniently, and the travelling wheels 300 and the scaffold body 100 can be in universal connection.
Each traveling wheel 300 comprises a wheel seat 310, a middle wheel frame 330 and two side wheel frames 320, wherein the bottoms of the middle wheel frame 330 and the side wheel frames 320 are respectively provided with a rotatable roller 350; the middle wheel frame 330 and the side wheel frames 320 are hinged to the wheel seat 310, the rotation axes of the middle wheel frame 330 extend along a first direction, the rotation axes of the two side wheel frames 320 extend along a second direction, the first direction and the second direction are horizontal and perpendicular to each other, the two side wheel frames 320 are arranged at intervals along the first direction, the middle wheel frame 330 is positioned at the middle part of the two side wheel frames 320 along the first direction and positioned at one side of the two side wheel frames 320 along the second direction; a first elastic member 323 is connected between the two side wheel frames 320, and a second elastic member 336 is connected between the middle wheel frame 330 and the wheel seat 310; friction structures are arranged between the middle wheel frame 330 and the roller 350 on the middle wheel frame and between the side wheel frame 320 and the roller 350 on the side wheel frame, the middle wheel frame 330 and the side wheel frame 320 are of an up-and-down split splicing structure, and the two parts can coaxially and relatively rotate or stop rotating.
The road wheel 300 has a first state, a second state, and a third state; when the travelling wheel 300 is in the first state, referring to fig. 3 and 4, the three rollers 350 are coaxial, the friction structure is invalid, and the rotation of the rollers 350 is not blocked; when the travelling wheel 300 is in the second state, referring to fig. 13 and 14, the two side wheel frames 320 are synchronously opened to both sides, the middle wheel frame 330 swings away from the side wheel frames 320, the three rollers 350 form a triangular posture, the friction structure is effective, and the rotation of the rollers 350 is resisted; when the travelling wheel 300 is in the third state, the upper and lower parts of the middle wheel frame 330 and the side wheel frame 320 are relatively rotated, and the three rollers 350 form a stable state with uniformly distributed circumferences, referring to fig. 15.
Specifically, referring to fig. 6, the body of the wheel seat 310 is an L-shaped plate-shaped member, the inner top surface of the wheel seat 310 is provided with a first hinge seat 312, the top of the middle wheel frame 330 is provided with a first hinge shaft 331 extending along a first direction, the first hinge shaft 331 is hinged with the first hinge seat 312, the middle upper portion of the middle wheel frame 330 is provided with a connecting block 332, one end of the second elastic member 336 is connected with the connecting block 332, and the other end is connected with the inner top surface of the wheel seat 310.
The inner side surface of the wheel seat 310 is provided with two hinge shafts 311 extending along a second direction (a direction perpendicular to the inner side surface), the two hinge shafts 311 are arranged at intervals and symmetrical with respect to the first hinge seat 312, the top of the side wheel frame 320 is provided with a through hole 321, and the side wheel frame 320 is hinged to the inner side surface of the wheel seat 310 through the cooperation of the through hole 321 and the hinge shaft 311;
The two sides of the inner side surface of the wheel seat 310 are respectively provided with a first limiting block 314, and the first limiting blocks 314 are used for limiting the maximum swing angle of the corresponding side wheel frames 320; a second limiting block 315 is arranged in the middle of the lower portion of the inner side surface of the wheel seat 310, the second limiting block 315 is used for limiting the limiting position of the middle wheel frame 330 to swing towards the direction close to the side wheel frame 320, a stop block 317 is arranged on the first hinging seat 312, the lower surface of the stop block 317 is an inclined surface, and the stop block 317 is used for limiting the limiting position of the middle wheel frame 330 to swing towards the direction far away from the side wheel frame 320.
When the scaffold body 100 is used, when no equipment or materials are arranged on the scaffold body 100 and the scaffold body needs to be moved, each travelling wheel 300 is manually switched to a first state, the travelling of the travelling wheel 300 is rapid and flexible, the working efficiency is improved, and it can be understood that the travelling wheel 300 is in the first state under the action of the first elastic piece 323 and the second elastic piece 336; when equipment or materials are arranged on the scaffold body 100 and the scaffold body needs to be moved, each travelling wheel 300 is manually switched to a second state, the travelling of the travelling wheel 300 is subjected to certain resistance, the travelling speed is reduced, the travelling is more stable, and meanwhile, due to the action of the first elastic piece 323 and the second elastic piece 336, the shock absorption capacity of the travelling wheel 300 during travelling is enhanced, and the shaking of the equipment or materials is avoided; when the scaffold body 100 is in the operating state of the staff, each walking wheel 300 is manually switched to the third state, and the walking wheels 300 form a stable posture to support the scaffold body 100, so that a good stable effect is achieved, and the safety of the constructors is ensured. The invention can adjust the working state according to the working condition by specially arranging the walking wheel 300, and has flexible use, stable support and high safety.
In a further embodiment, referring to fig. 4 and 5, each side wheel frame 320 is provided with a meshing gear 322, the meshing gears 322 on the two side wheel frames 320 are meshed with each other, and by the arrangement of the meshing gears 322, the two side wheel frames 320 can synchronously rotate reversely, so that the convenience of operation is improved.
In a further embodiment, the friction structure includes a friction plate 360, the friction plate 360 being disposed at one side of the two side frames 320 close to each other and at both sides of the middle frame 330; the friction disc 360 rotates synchronously with the corresponding roller 350 and is connected with the corresponding roller 350 in a coaxial sliding way, the peripheral wall of the friction disc 360 is provided with a first friction bulge 364, the middle wheel frame 330 and the side wheel frame 320 are provided with a second friction bulge 333, a fourth elastic piece 362 is arranged between the friction disc 360 and the corresponding roller 350, the friction disc 360 slides in a direction far away from the corresponding roller 350 by the initial fourth elastic piece 362, the first friction bulge 364 on the friction disc 360 is in alignment contact with the second friction bulge 333 on the corresponding middle wheel frame 330 or the side wheel frame 320, the friction structure is effective, the rotation of the roller 350 is resisted under the action of the first friction bulge 364 and the second friction bulge 333, the rotation speed of the roller 350 is slowed down, the middle wheel frame 330 and the side wheel frame 320 are clung to each other when the running wheel 300 is in a first state, the friction disc 360 moves towards the direction close to the corresponding roller 350, the first friction bulge 364 and the second friction bulge 333 are dislocated, the friction structure is failed, the rotation of the roller 350 is not resisted smoothly, the rotation efficiency is improved flexibly.
Specifically, referring to fig. 8 and 12, an insertion hole 351 is coaxially provided on a rotation shaft of the roller 350, an insertion shaft 361 is coaxially provided on the friction plate 360, the insertion shaft 361 passes through the corresponding middle wheel frame 330 or side wheel frame 320 and is slidably inserted into the insertion hole 351 and connected with the insertion hole 351 through a guide key (not shown in the drawings) so as to realize relative sliding and coaxial rotation, it can be understood that the two side wheel frames 320 are provided with the friction plate 360 only on one side close to each other, and both sides of the middle wheel frame 330 are provided with the friction plate 360.
The first friction protrusions 364 are disposed on the outer peripheral wall of the friction disc 360 near one side of the roller 350, the second friction protrusions 333 are disposed in shaft holes of the side wheel frame 320 and the middle wheel frame 330 for mounting the roller 350, the fourth elastic member 362 is connected between the bottom of the hole of the insertion hole 351 and the insertion shaft 361, the insertion shaft 361 is driven to move in a direction away from the roller 350 by the fourth elastic member 362, the first friction protrusions 364 on the friction disc 360 are in aligned contact with the second friction protrusions 333 in the corresponding shaft holes, the side surface of the friction disc 360 far from the roller 350 is located on the outer side of the corresponding side wheel frame 320 and the middle wheel frame 330, at this time, the friction structure is effective, when the travelling wheel 300 is in the first state, the middle wheel frame 330 and the side wheel frame 320 are tightly attached, the friction disc 360 on the side wheel frame is mutually extruded, the friction disc 360 moves in a direction close to the corresponding roller 350, and the first friction protrusions 364 on the friction disc 360 are dislocated with the second friction protrusions 333 in the corresponding shaft holes, the friction structure is disabled, and the rotation of the roller 350 is not resisted.
In a further embodiment, referring to fig. 9, 10 and 11, the middle wheel frame 330 and the side wheel frame 320 each include an upper frame body and a lower frame body, the roller 350 is rotatably connected to the lower frame body, a docking slot is provided on the upper frame body, a locking position and an unlocking position are provided in the docking slot, four switching blocks are provided at the locking position, a switching slot 335 is formed between two adjacent switching blocks, and the unlocking position is located below the locking position.
The lower frame body is provided with a butt joint shaft, the peripheral wall of the top end of the butt joint shaft is provided with two locking blocks 334 which are positioned in the same straight line, the butt joint shaft is inserted into a butt joint groove, the upper frame body and the lower frame body are prevented from rotating when the locking blocks 334 are positioned in the switching groove 335, the upper frame body and the lower frame body can relatively rotate when the locking blocks 334 are positioned in unlocking positions, and the bottom of the butt joint groove is contracted to block the locking blocks 334, so that the upper frame body and the lower frame body are prevented from being separated;
The included angle of the two sets of switching grooves 335 on the middle wheel frame 330 which are in the same line is 90 degrees, and the included angle of the two sets of switching grooves 335 on the side wheel frame 320 which are in the same line is 60 degrees. When the state needs to be switched, only the upper frame body and the lower frame body of the middle wheel frame 330 and the lower wheel frame are required to be pulled apart by one end distance, so that the lower frame body and the upper frame body relatively rotate until the locking piece 334 is aligned with the other group of switching grooves 335, the locking piece 334 on the lower frame body is pushed to the switching grooves 335, the upper frame body and the lower frame body are tightly propped under the gravity action of the scaffold body 100, the locking piece 334 cannot move in the axial direction, and the roller 350 can reliably support the scaffold body 100.
In a further embodiment, the wheel seat 310 is further provided with a cleaning plate 380, the cleaning plate 380 is hinged to the wheel seat 310, the axis of the hinge shaft 311 extends along the first direction, a third elastic member 381 is connected between the cleaning plate 380 and the wheel seat 310, the third elastic member 381 urges the cleaning plate 380 to approach to the direction of the roller 350, the cleaning plate 380 is provided with arched scraping grooves 383, and when the running wheel 300 is in the first state, the scraping grooves 383 are in one-to-one correspondence with the three rollers 350 and are inserted outside the corresponding rollers 350, so that the cleaning plate 380 scrapes dirt (such as sludge) on the rollers 350.
Specifically, the outer side surface of the wheel seat 310 is provided with a second hinge seat 313, the top of the cleaning plate 380 is provided with a second rotating shaft 382, the cleaning plate 380 is hinged to the outer side surface of the wheel seat 310 through the cooperation of the second rotating shaft 382 and the second hinge seat 313, and the second rotating shaft 382 is provided with a fixing plate for fixing the third elastic member 381.
In the present invention, the first elastic member 323, the second elastic member 336, the third elastic member 381, and the fourth elastic member 362 are preferably springs.
In a further embodiment, the scaffold body 100 comprises a crossbar 110 and a vertical rod 120, the vertical rod 120 is a pillar, the crossbar 110 and the vertical rod 120 are connected to form a quadrilateral, the scaffold body 100 has multiple layers, each layer is provided with a support plate 130 for carrying equipment or work, the scaffold body 100 is further provided with a diagonal brace 140 for supporting the scaffold body 100 in an auxiliary manner, and the scaffold body 100 is further provided with a cat ladder for a constructor to climb. It can be understood that, in order to ensure the structural stability of the scaffold body 100, the scaffold body 100 is further provided with other support rods, which are not described herein.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The mobile support platform for tunnel engineering construction is characterized by comprising a scaffold body and a plurality of travelling wheels arranged at the bottom of the scaffold body;
Each travelling wheel comprises a wheel seat, a middle wheel frame and two side wheel frames, and the bottoms of the middle wheel frame and the side wheel frames are respectively provided with a rotatable roller; the middle wheel frame and the side wheel frames are hinged to the wheel seat, the rotation axes of the middle wheel frame extend along a first direction, the rotation axes of the two side wheel frames extend along a second direction, the first direction and the second direction are horizontal and mutually perpendicular, and the middle wheel frame is positioned in the middle of the two side wheel frames along the first direction and positioned on one side of the two side wheel frames along the second direction; a first elastic piece is connected between the two side wheel frames, and a second elastic piece is connected between the middle wheel frame and the wheel seat;
Friction structures are arranged between the middle wheel frame and the roller on the middle wheel frame and between the side wheel frame and the roller on the side wheel frame, the middle wheel frame and the side wheel frame are of an upper-lower split splicing structure, and the two parts can coaxially and relatively rotate or stop rotating; each side wheel frame is provided with a meshing gear, and the meshing gears on the two side wheel frames are meshed with each other;
The travelling wheel is provided with a first state, a second state and a third state; when the travelling wheel is in a first state, the three rollers are coaxial, the friction structure is invalid, and the initial state of the travelling wheel is the first state under the action of the first elastic piece and the second elastic piece; when the travelling wheels are in the second state, the two side wheel frames are synchronously opened to two sides, the middle wheel frame swings in a direction away from the side wheel frames, three rollers form a triangular posture, and the friction structure is effective; when the travelling wheel is in a third state, the upper part and the lower part of the middle wheel frame and the side wheel frame are rotated relatively, and the three rollers form a stable state with uniformly distributed circumferences;
The friction structure comprises a friction disc, wherein the friction disc is arranged on one side of the two side wheel frames, which are close to each other, and on two sides of the middle wheel frame; the friction disc and corresponding gyro wheel synchronous rotation and with corresponding gyro wheel coaxial sliding connection, the periphery wall of friction disc is provided with first friction arch, be provided with the second friction arch on well wheel carrier and the side wheel carrier, be provided with the fourth elastic component between friction disc and the corresponding gyro wheel, initial fourth elastic component makes the friction disc slide to the direction of keeping away from corresponding gyro wheel, and then make first friction arch and corresponding second friction arch align to contact, when the wheel of walking is in first state, well wheel carrier and side wheel carrier hug closely, the friction disc on it extrudees each other, the friction disc moves to the direction that is close to corresponding gyro wheel, make first friction arch and second friction arch dislocation.
2. The mobile supporting platform for tunnel engineering construction according to claim 1, wherein the main body of the wheel seat is an L-shaped plate-shaped member, the middle wheel frame is hinged to the inner top surface of the wheel seat, and the side wheel frame is hinged to the inner side surface of the wheel seat;
The two sides of the inner side surface of the wheel seat are provided with a first limiting block which is used for limiting the maximum swing angle of the corresponding side wheel frame; the middle part below the inner side surface of the wheel seat is provided with a second limiting block, the second limiting block is used for limiting the limiting position of the middle wheel frame to swing in the direction close to the side wheel frame, the first hinge seat is provided with a stop block, and the stop block is used for limiting the limiting position of the middle wheel frame to swing in the direction far away from the side wheel frame.
3. The mobile supporting platform for tunnel engineering construction according to claim 1, wherein the rotary shaft of the roller is coaxially provided with a jack, the friction disc is coaxially provided with a plug shaft, and the plug shaft passes through the corresponding middle wheel frame or side wheel frame and is slidably inserted into the jack and is connected with the jack through a guide key.
4. The mobile supporting platform for tunnel engineering construction according to claim 1, wherein the middle wheel frame and the side wheel frames comprise an upper frame body and a lower frame body, the idler wheels are rotatably connected to the lower frame body, a butt joint groove is formed in the upper frame body, a locking position and an unlocking position are formed in the butt joint groove, four switching blocks are arranged at the locking position, a switching groove is formed between every two adjacent switching blocks, and the unlocking position is located below the locking position; the lower frame body is provided with a butt joint shaft, the peripheral wall of the top end of the butt joint shaft is provided with two locking blocks which are positioned on the same straight line, the butt joint shaft is inserted into the butt joint groove, and the locking blocks can be inserted into the switching groove.
5. The mobile supporting platform for tunnel engineering construction according to claim 4, wherein the included angle of the two groups of the switching grooves on the middle wheel frame, which are in the same line, is 90 degrees, and the included angle of the two groups of the switching grooves on the side wheel frame, which are in the same line, is 60 degrees.
6. The tunnel engineering construction mobile support platform according to claim 1, wherein the wheel seat is further provided with a cleaning plate, the cleaning plate is hinged to the wheel seat, the hinge axis extends along the first direction, a third elastic piece is connected between the cleaning plate and the wheel seat, the third elastic piece enables the cleaning plate to approach to the direction of the roller, the cleaning plate is provided with arched scraping grooves, and when the travelling wheel is in a first state, the scraping grooves are in one-to-one correspondence with the three rollers and are inserted outside the corresponding rollers.
7. The mobile support platform for tunnel construction of claim 6, wherein the third resilient member is a spring.
8. The mobile support platform for tunnel engineering construction according to claim 1, wherein the first elastic member and the second elastic member are springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410317905.5A CN117905259B (en) | 2024-03-20 | 2024-03-20 | Mobile supporting platform for tunnel engineering construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410317905.5A CN117905259B (en) | 2024-03-20 | 2024-03-20 | Mobile supporting platform for tunnel engineering construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117905259A CN117905259A (en) | 2024-04-19 |
| CN117905259B true CN117905259B (en) | 2024-06-04 |
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ID=90686258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410317905.5A Active CN117905259B (en) | 2024-03-20 | 2024-03-20 | Mobile supporting platform for tunnel engineering construction |
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| CN110920768A (en) * | 2019-12-20 | 2020-03-27 | 浙江大学 | Flexible foot structure of biped robot |
| CN117432173A (en) * | 2023-12-21 | 2024-01-23 | 广东九为工程安全科技股份有限公司 | Safety scaffold |
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| US20070084668A1 (en) * | 2005-10-13 | 2007-04-19 | D.O.T. Patio & Home | Apparatus and method for human powered movement of a scaffold structure |
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| JP3022677U (en) * | 1995-09-14 | 1996-03-26 | 日本ベッド製造株式会社 | caster |
| JP2009040165A (en) * | 2007-08-07 | 2009-02-26 | Kanto Auto Works Ltd | Three-wheeled traveling device |
| CN107614365A (en) * | 2015-02-01 | 2018-01-19 | 詹尼斯机器人技术有限公司 | Mobile platform |
| DE202016103086U1 (en) * | 2016-06-10 | 2016-08-11 | Blickle Räder + Rollen GmbH u. Co. KG | roller unit |
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| CN117432173A (en) * | 2023-12-21 | 2024-01-23 | 广东九为工程安全科技股份有限公司 | Safety scaffold |
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| CN117905259A (en) | 2024-04-19 |
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