CN111301451A - Automatic telescopic protective cover and automatic telescopic operation method thereof - Google Patents

Abstract

The invention provides an automatic telescopic protective cover which comprises a telescopic protective cover, a fixed function room, a vehicle underframe, a sliding transmission mechanism, a movable cover roller wheel, a guide rail and a guide wheel, wherein the fixed function room is arranged on the vehicle underframe, the vehicle underframe is provided with at least one guide rail, the telescopic protective cover is provided with at least one movable cover roller wheel, the movable cover roller wheels slide in the guide rails which are fixed on the vehicle underframe and are parallel to each other, the sliding transmission mechanism, the telescopic protective cover and the fixed function room are connected and fixed with each other, and the telescopic movement of the telescopic protective cover is realized through the transmission of the sliding transmission mechanism. The automatic telescopic protective cover provided by the embodiment of the invention realizes the automatic telescopic function among the functions of the rail engineering vehicle through a simple structure, reduces the personnel configuration and working strength of vehicle-mounted workers compared with a manual push-pull protective cover, and improves the working efficiency and the opening stability of the protective cover.

Description

Automatic telescopic protective cover and automatic telescopic operation method thereof

Technical Field

The invention relates to an automatic telescopic protective cover, and belongs to the field of subways and railway engineering vehicles.

Background

The retractable protection cover applied to the field of subway and railway engineering vehicles still needs to be manually pushed and pulled by vehicle workers to realize the opening and closing functions of the movable protection cover. Rather than by means of a safe and reliable mechanical transmission. This results in several disadvantages:

①, low working efficiency and poor stability:

generally all be equipped with equipment in the vehicle removes the protection casing, personnel's operating space is narrow and small, and vehicle-mounted operating personnel is difficult for carrying out manual operation to the flexible protection casing of vehicle. Meanwhile, the uncontrollable factors are more, and the opening and closing functions of the movable protective cover can be safely and reliably completed only by matching operators on the premise of having enough operation experience.

② high hazard coefficient:

track construction vehicle not only is under construction on straight circuit, still be under construction on the circuit that has the slope, when the operation of stopping at ramp circuit, when needing the manual switch protection casing, people's thrust is very limited, often can not relax, the safe removal protection casing of opening or closing, if open or the in-process of closing at the manual work and touch the circumstances such as push away motionless or gyro wheel jamming, can lead to the protection casing back swift current when no machinery auto-lock and operating personnel uncontrollable, very easily cause bodily injury to operating personnel.

③, the cost is high:

the personnel selection cost continues to increase at the present stage to manual push-and-pull realizes opening and closing of removal protection casing, undoubtedly need the construction personnel selection unit to increase vehicle-mounted staff's quantity, and the reducible vehicle-mounted staff's of mechanical automation quantity, thereby can reduce construction unit's cost of labor and risk.

Disclosure of Invention

The front and the back are the front or the back parallel to the extending direction of the steel rail; the left and right sides are the left or right sides parallel to the direction of the sleeper, the direction parallel to the sleeper is the transverse direction, and the direction parallel to the rail is the longitudinal direction.

The invention provides an automatic telescopic protective cover, which comprises a telescopic protective cover, a fixed function room, a vehicle underframe, a sliding transmission mechanism, movable cover rollers, guide rails and guide wheels, wherein the fixed function room is arranged on the vehicle underframe which is provided with at least one guide rail, the telescopic protective cover is provided with at least one movable cover roller which slides in the guide rails which are fixed on the vehicle underframe and are parallel to each other, the inner cavity of the telescopic protective cover is sleeved outside the fixed function room, the telescopic protective cover and the fixed function room are used in a matching way, the telescopic protective cover is arranged at any position of the front part, the middle part and the back part of the upper part of the vehicle underframe according to the use requirement, and the guide wheels 8 are arranged outside the two sides of the fixed function room 2; the sliding transmission mechanism, the telescopic protective cover and the fixing function are connected and fixed with each other, and the telescopic protective cover is driven by the sliding transmission mechanism to move in a telescopic mode.

The sliding transmission mechanism comprises a horizontal adjusting fixed support, a vertical adjusting fixed support, a hydraulic motor, a rolling pin gear and a pin rack, the horizontal adjusting fixed support is fixedly connected to the upper central position of the outer side of the side wall of the fixed functional compartment through a fastener, the bottom of the horizontal adjusting fixed support comprises an adjusting support plate, and a fastener XII and a fastener IV are mounted on the adjusting support plate; the vertical adjusting fixed support connected with the hydraulic motor is fixedly connected onto the plane of the horizontal adjusting fixed support through a fastener, the bottom of a flange surface of the vertical adjusting fixed support is supported on the upper end surface of a fastener XII, and the vertical position of the vertical adjusting fixed support is locked through adjusting the fastener XII and fixing and fastening IV; the flange surface of the hydraulic motor and the flange surface on the vertical adjusting fixed support are matched through a gap and are connected and fixed through a fastening piece VIII, and the rolling pin gear is connected with the output shaft of the hydraulic motor through a flat key and is fixed through an end cover and the fastening piece VII. The pin rack is fixed in the channel steel on the inner side of the top of the telescopic protective cover through a fastener X and a channel steel gasket.

Preferably, the screw hole of the horizontal adjusting fixing support is a transverse through hole, the width of the transverse through hole is not less than the diameter of the fastening piece, and the length of the transverse through hole is not less than 1.5-2 times of the diameter of the fastening piece.

Preferably, the screw hole of the vertical adjusting fixing support is a vertical through hole, the width of the vertical through hole is not less than the diameter of the fastening piece, and the length of the transverse through hole is not less than 1.5-2 times of the diameter of the fastening piece.

The pin rack comprises a clamping plate, a pin cylinder and round pin teeth, and the clamping plate in the pin rack is provided with through holes with standard pitch sizes. The round pin teeth are sleeved on the pin barrel and fixedly connected with the clamping plate through the pin barrel. The pin rack is connected and fixed in the channel steel on the inner side of the top of the telescopic protective cover through a fastener and a channel steel washer.

The pin rack comprises a plurality of standard sections of equal length, typically less than 1 meter, and a non-standard section of length determined by the total length of the pin rack meeting design requirements.

The movable cover roller comprises a roller, a roller support and obstacle eliminators, the roller is connected and fixed on a shaft of the roller support, and the obstacle eliminators are arranged on two sides of the roller support.

The guide rail includes U type rail groove, lower rail and upper rail, and the lower rail passes through countersunk head screw to be fixed in the inside downside in U type rail groove, and upper rail welded fastening is in the upside in U type rail inslot portion.

The second aspect of the present invention provides an automatic telescopic working method for a protective cover, which includes:

step S1, the operation vehicle is driven to the road section to be operated, the driving device is started, the pin teeth at the output shaft end of the driving device rotate forwards or backwards along the pin rack meshed with the pin teeth, and the sliding transmission mechanism drives the telescopic protective cover to slide forwards or backwards relative to the fixed function;

step S1.1, when the left and right direction deviation occurs in the matching between the pin teeth and the pin racks, adjusting the horizontal adjustment to be fixed

A fixed support, making the horizontal adjustment fixed support slightly adjust the deviation distance leftwards or rightwards relative to the fixed function, and then

Then the horizontal adjusting fixed support is fastened relative to the fixed function room, so that the transverse adjustment of the pin teeth is completed;

s1.2, when the pin teeth and the pin racks are matched up and down to generate errors, adjusting the vertical adjustment fixing support and the pin racks

Fixing the relative position between the functional compartments, then connecting and fastening the vertical adjusting fixed support and the fixed functional compartments,

thereby completing the vertical adjustment of the pin teeth;

step S2, when the telescopic protective cover is moved to the space on the vehicle underframe to meet the operation requirement, the driving device is closed, and the telescopic protective cover is still relative to the vehicle underframe;

step S3, performing work in the space formed by the telescopic protective cover and the vehicle underframe;

step S4, after the operation is finished, the driving device is started again, the driving device rotates in the opposite direction to drive the pin teeth at the output shaft end to rotate backwards or forwards along the pin rack, so that the telescopic protective cover moves towards the direction close to the fixed function until the initial position;

and step S5, the running gear is started to drive the working vehicle away from the working section.

Steps S1, S2, S3, S4, S5 are performed in sequence, or steps S1.1, S1, S2, S3, S4, S5 are performed in sequence, or steps S1.2, S1, S2, S3, S4, S5 are performed in sequence, or steps S1.1, S1.2, S1, S2, S3, S4, S5 are performed in sequence.

In a second aspect of the present invention, the automatic retractable shield according to the first aspect of the present invention is used.

The automatic telescopic protective cover has the advantages that:

1. the automatic telescopic protective cover can completely replace the existing manual push-pull protective cover of subway and railway engineering vehicles, realizes the automatic movement of the telescopic protective cover, and simultaneously improves the stability and the safety of the telescopic protective cover during the operation and the parking operation of the whole vehicle.

2. The mechanism for realizing automatic telescopic transmission is a pin gear transmission mechanism, the mechanism is gear transmission in a special form, the engagement mode is pin and rack linear engagement, and the gear tooth profile curve is an involute curve. Because the gear of the pin wheel is a round pin, compared with the common gear, the pin wheel has the advantages of simple and reliable structure, convenient maintenance and replacement, convenient processing, low manufacturing cost, constant instantaneous transmission ratio, high stability, low noise, high transmission efficiency and the like. Is very suitable for being used in the fields of subways and railway engineering vehicles.

3. The adjusting support for fixing the hydraulic motor and the roller pin gear can be adjusted horizontally and vertically.

4. The guide wheels arranged on the left side and the right side of the functional fixing room can effectively eliminate the relative shaking of the telescopic protective cover in the whole vehicle running process; meanwhile, the telescopic protective cover can be ensured to be closed and opened stably and reliably.

5. The upper guide rail and the lower guide rail are arranged in the guide rail, so that the roller of the telescopic protective cover can be fixed in the guide rail at any time, and the safe operation and work of the whole vehicle and the automatic telescopic protective cover are ensured.

The invention overcomes the defect of manual push-pull movable protective covers of the existing subway and rail engineering vehicles, reduces the use risk and improves the automation degree of the telescopic protective covers.

The welding machine is in a closed state between the non-working state and the running state of the whole vehicle, and the welding machine cover plays a role in protecting a welding machine system and ensuring the attractiveness and coordination of the whole vehicle; when the whole vehicle reaches the operation position, the welding machine cover automatically moves forwards and is completely opened, so that sufficient operation space is provided for the welding machine and the welding machine retracting device; after the operation is finished, the welding machine is retracted, and the welding machine cover automatically moves backwards and is completely closed.

The automatic telescopic protective cover is mainly powered by a hydraulic motor or a speed reducing motor, and the automatic telescopic movement function of the protective cover is realized through the meshing transmission of a rolling pin gear and a linear pin rack fixed inside the movable protective cover. The roller gear and the pin rack may also be replaced with a sprocket and a chain.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of the automatic retractable guard of the present invention;

FIG. 2 is a schematic structural view of a transmission mechanism in the embodiment shown in FIG. 1;

FIG. 3 is a schematic structural view of the pin rack of the embodiment of FIG. 2;

FIG. 4 is a schematic structural view of the pin rack of the embodiment of FIGS. 2-3;

FIG. 5 is a schematic cross-sectional view of the traveling cage rollers and rails of the embodiment of FIG. 1;

FIG. 6 is a front view of the embodiment of FIG. 5 showing the installed position of the obstacle deflector 503;

FIG. 7 is a side view of the relative positional relationship between the moving cowl roller and rail shown in FIG. 5 and the obstacle deflector 503; the numerical designations in fig. 1-7 mean:

1 telescopic protective cover 2 fixed function room 3 vehicle underframe 4 sliding transmission mechanism

5 moving cover roller 6 guide rail 7 channel steel 8 guide wheel

401 horizontal adjusting fixed support 402 vertical adjusting fixed support 403 hydraulic motor 404 rolling pin gear

405 fastener V406 fastener VI 407 fastener VII 408 fastener VIII 409 Pin and Rack

410 fastener X4011 end cover 4012 fastener XII 4013 adjusting support plate 4014 fastener IV

4091 Splint 4092 Pin tube 4093 round Pin tooth 4094U-steel washer

501 roller 502 roller support 503 obstacle eliminator 504 shaft

601U-shaped rail groove 602, lower guide rail 603 and upper guide rail 604 are countersunk screws.

Detailed Description

Fig. 1 shows a preferred embodiment 1.1 of the automatic telescopic shield according to the present invention, which comprises a telescopic shield 1, wherein the telescopic shield 1 is installed outside a fixed function room 2, the fixed function room 2 is installed on a vehicle underframe 3, a sliding transmission mechanism 4 is installed between the fixed function room 2 and the telescopic shield 1, a moving shield roller 5 is installed on the lower inner side of the side wall of the telescopic shield 1, and the moving shield roller 5 is matched with a guide rail 6 to realize the relative sliding of the telescopic shield 1 relative to the fixed function room 2 and the vehicle underframe 3; the outer side of the upper part of the side wall of the fixed functional room 2 is also provided with a guide wheel 8 which plays a role in limiting and guiding the sliding of the telescopic protective cover 1.

The fixed functional room 2 is fixed on a vehicle underframe 3, a plurality of movable cover rollers 5 are arranged in the side wall of the telescopic protective cover 1, and the plurality of movable cover rollers 5 slide in guide rails 6 which are fixed on the vehicle underframe 3 and are parallel to each other, so that the telescopic protective cover 1 can move relative to the fixed functional room 2 and the vehicle underframe 3.

The contour dimension of the inner cavity of the telescopic protective cover 1 is larger than the contour dimension of the telescopic protective cover 2 between the fixed functions, the telescopic protective cover 1 is sleeved on the fixed functions 2, the telescopic protective cover and the telescopic protective cover are used in a matched mode, the telescopic protective cover 1 is placed in any position in the front, in the middle and at any position behind the upper portion of the vehicle underframe 3 according to design and use requirements, the guide wheels 8 on two sides of the telescopic protective cover 2 are installed between the fixed functions at the same time, the relative distance of the telescopic protective cover 1 and the fixed functions 2 under any working condition is effectively controlled. The sliding transmission mechanism 4 is connected with the telescopic protective cover 1 and the fixed functional room 2, and the telescopic protective cover 1 can stretch and move relative to the fixed functional room 2 through pin tooth transmission of the sliding transmission mechanism 4.

When the telescopic hood 1 is opened, the telescopic hood 1 substantially completely overlaps the fixed function compartment 2, and the working device is operated in a completely opened area. When the telescopic protective cover 1 is closed, the telescopic protective cover 1 and the adjacent fixing function room 2 are connected end to form an integral closed protective cover, so that a working device is protected and arranged in the telescopic protective cover 1, and the whole vehicle is attractive.

As shown in fig. 2, the sliding transmission mechanism 4 implementing the transmission function in this embodiment includes a horizontal adjustment fixing support 401 installed above the front end surface of the fixing function room, a vertical adjustment fixing support 402 is installed on the front end surface of the horizontal adjustment fixing support 401, a hydraulic motor 403 is installed on the front end surface of the vertical adjustment fixing support 402, and the hydraulic motor 403 is fixed on the support through a fastening member VIII 408.

A horizontal adjusting fixed support 401 with a horizontal adjusting function is fixedly connected to the upper central position of the outer side of the side wall of the fixed function room 2 through a fastener V405, the bottom of the horizontal adjusting fixed support 401 comprises an adjusting support plate 4013, and a fastener XII 4012 and a fastener VIII 4014 are installed on the adjusting support plate 4013; the vertical adjusting device has the vertical adjusting function, meanwhile, a vertical adjusting fixed support 402 connected with the hydraulic motor 403 is fixedly connected to the plane of the horizontal adjusting fixed support 401 through a fastener VI 406, the bottom of the flange surface of the vertical adjusting fixed support 402 is supported on the upper end surface of a fastener XII 4012, and the vertical position of the vertical adjusting fixed support 402 can be locked through adjusting the fastener XII 4012 and a fixed fastener VIII 4014; the flange surface of the hydraulic motor 403 and the flange surface on the vertical adjusting fixed support 402 are matched through a gap and are connected and fixed through a fastener VIII 408, the rolling pin gear 404 is connected with the output shaft of the hydraulic motor 403 through a flat key and is fixed through an end cover 4011 and a fastener VII 407, and a pin rack 409 which realizes horizontal linear motion is fixed in a channel steel 7 on the inner side of the top of the telescopic protective cover 1 through a fastener X410 and a channel steel washer 4094. When the roll pin gear 404 and the pin rack 409 are engaged with each other, and the circular motion of the roll pin gear 404 is converted into the linear motion of the pin rack 409 under the driving of the hydraulic motor 403, so that the automatic telescopic moving function of the telescopic shield 1 is realized, and meanwhile, the horizontal and vertical adjustment can be performed through the waist holes on the horizontal adjusting fixed support 401 and the vertical adjusting fixed support 402, so that the engagement condition of the roll pin gear 404 and the pin rack 409 and the relative position between the telescopic shield 1 and the fixed function 2 are adjusted.

As shown in fig. 1-3, a pin rack 409 is installed in a channel steel 7 on the inner side of the top of the telescopic shield 1, wherein the pin rack 409 comprises a clamping plate 4091, a pin cylinder 4092 and a round pin tooth 4093, and the clamping plate 4091 of the pin rack 409 is provided with a through hole with a standard pitch size, and the pitch size is determined by different design requirements. The round pin teeth 4093 are sleeved outside the pin cylinder 4092 and fixedly connected with the left and right clamping plates 4091 through the pin cylinder 4092. The pin rack 409 is fixed in a channel steel 7 at the inner side of the top of the telescopic shield 1 through a fastener X410 and a channel steel washer 4094, so that the connection between a transmission piece and a moving component is realized.

Fig. 4 is a schematic structural diagram of the pin and rack 409 according to an embodiment of the present invention, the structure of which is composed of a clamping plate 4091, a pin cylinder 4092 and a round pin 4093, in order to reduce accumulated machining errors and facilitate installation, the pin and rack 409 includes a plurality of standard sections with equal length and a non-standard section, the length of the standard sections is usually less than 1 meter, the length of the non-standard sections is determined by the total length of the pin and rack 409 satisfying design requirements, which is specifically represented by that a plurality of through holes with standard pitch size and a through hole with non-standard pitch size are provided in the clamping plate 4091, the standard pitch is less than 1 meter, the length of the non-standard pitch is determined by different design requirements, and the pin and rack 409 adopts a structure that a bolt penetrates through the pin cylinder 4092 to facilitate connection and fixation of the.

Fig. 5 is a schematic cross-sectional view of the moving cowl roller 5 and the guide rail 6 according to the embodiment of the present invention. In this embodiment, the moving hood roller 5 includes a roller 501, a roller support 502 and a barrier remover 503, the roller 501 is connected and fixed on a shaft 504 of the roller support 502, the barrier remover 503 is installed on two sides of the roller support 502, and the roller support 502 is fixed on the inner side of the side wall of the retractable hood 1.

The guide rail 6 comprises a U-shaped rail groove 601, a lower guide rail 602 and an upper guide rail 603, wherein the lower guide rail 602 is fixed on the lower side inside the U-shaped rail groove 601 through a countersunk head screw 604, and the upper guide rail 603 is fixed on the upper side inside the U-shaped rail groove 601 in a welding manner. Whole guide rail 6 divide into about each, parallel weld fixes in the frame both sides respectively, several remove the cover gyro wheel 5 and connect the both sides of fixing in telescopic protection casing 1 bottom, the gyro wheel 501 that removes cover gyro wheel 5 rolls on lower guideway 602 in guide rail 6, certain clearance is left with removing cover gyro wheel 5 around the upper guideway 603, the bellied rim in gyro wheel 501 both sides of removing cover gyro wheel 5 is under the limiting displacement of lower guideway 602 and upper guideway 603, guaranteed that all remove in the guide rail 6 cover gyro wheels 5 can both the reliable and stable operation, also prevent simultaneously that the whole car from being under operation or other exogenic actions, remove the emergence of the incident such as cover gyro wheel 5 jumps out guide rail 6. The obstacle deflector 503 removes foreign matter in the guide rail 6 during the operation of the moving cowl roller 5.

As shown in fig. 6, the obstacle deflector 503 is connected to the roller support 502 by spot welding after the position adjustment, the obstacle deflector 503 is sleeved under the roller 501 and the roller support 502, the transverse section of the obstacle deflector 503 is a concave shape with a downward opening, the concave shape opening is matched with the lower guide rail 602, so that the obstacle deflector 503 can clear obstacles on two sides of the lower guide rail 602, and during operation, the upper part of the lower guide rail 602 is located in the concave shape opening of the obstacle deflector 503.

Example 1.2 automatic retractable shield, the difference from example 1.1 is: the movable shield roller is matched with a guide rail arranged on the outer side below the side wall of the fixed function room, so that the telescopic shield can slide relative to the fixed function room.

Example 1.3 automatic retractable shield, the same as example 1.1, except that: the roller pin rack and roller pin gear are replaced with a chain and a sprocket.

Example 1.4 automatic retractable shield, the same as example 1.1, except that: the roller pin rack and the roller pin gear are replaced by a chain, a driving chain wheel and a tensioning chain wheel, and the same transmission function is realized.

Example 1.5 automatic retractable shield, the difference with respect to example 1.1 is: the sliding transmission mechanisms are arranged on the left side and the right side of the bottom of the telescopic protective cover.

Example 1.6 automatic retractable shield, the same as example 1.1, except that: the angle steel type splint replaces a straight splint 4091 and a channel steel 7, and is directly installed at the top of the telescopic protective cover, the angle steel type splint is provided with a plurality of through holes with standard pitch size and a through hole with non-standard pitch size, and the round pin gear sleeve is arranged outside the pin cylinder and is fixedly connected with the left and right angle steel type splints through the pin cylinder.

Example 1.7 automatic retractable shield, the same as example 1.1, except that: the sliding transmission mechanisms are arranged on the left side and the right side of the bottom of the telescopic protective cover.

Example 1.8 automatic retractable shield, the difference from example 1.1 is: the hydraulic motor is replaced by a speed reducing motor or a stepping motor.

Embodiment 2.1A protection cover automatic telescopic operation method comprises the following steps:

step S1, the operation vehicle is driven to the road section to be operated, the driving device is started, the pin teeth at the output shaft end of the driving device rotate forwards or backwards along the pin rack meshed with the pin teeth, and the sliding transmission mechanism 4 drives the telescopic protective cover 1 to slide forwards or backwards relative to the fixed function room 2;

s1.1, when the left and right direction deviation occurs in the matching between the pin teeth and the pin rack 409, adjusting the horizontal adjusting fixed support 401 to enable the horizontal adjusting fixed support 401 to slightly adjust the deviation distance leftwards or rightwards relative to the fixed functional room 2, and then fastening the horizontal adjusting fixed support 401 relative to the fixed functional room 2 to finish the transverse adjustment of the pin teeth;

s1.2, when the pin teeth and the pin rack 409 are matched up and down to generate errors, adjusting the relative position between the vertical adjusting fixed support 402 and the fixed functional room 2, and then connecting and fastening the vertical adjusting fixed support 402 and the fixed functional room 2 to finish the vertical adjustment of the pin teeth;

step S2, when the telescopic protective cover 1 is moved to the space on the vehicle underframe 3 to meet the operation requirement, the driving device is closed, and the telescopic protective cover 1 is still relative to the vehicle underframe 3;

step S3, performing work in the space formed by the telescopic protective cover 1 and the vehicle underframe 3;

step S4, after the operation is finished, the driving device is started again, the driving device rotates in the opposite direction to drive the pin teeth at the output shaft end to rotate backwards or forwards along the pin rack 409, so that the telescopic protective cover 1 moves towards the direction close to the fixed functional room 2 until the initial position;

step S5, the running gear is started to drive the operation vehicle away from the operation section;

steps S1, S2, S3, S4, S5 are performed in sequence, or steps S1.1, S1, S2, S3, S4, S5 are performed in sequence, or steps S1.2, S1, S2, S3, S4, S5 are performed in sequence, or steps S1.1, S1.2, S1, S2, S3, S4, S5 are performed in sequence.

Example 2.1 automatic retractable shield operation method the automatic retractable shield according to examples 1.1-1.8 was used.

The automatic telescopic protective cover provided by the embodiment of the invention realizes the automatic telescopic function among the functions of the rail engineering vehicle through a simple structure, reduces the personnel configuration and working strength of vehicle-mounted workers compared with a manual push-pull protective cover, and improves the working efficiency and the opening stability of the protective cover. The pin rack 409 is high in structural strength, and left and right limiting can be achieved through the pin gear 404 fixed on the fixed functional room 2 in the telescopic transmission process, so that the accuracy and stability of the telescopic protective cover 1 in operation are guaranteed. Simultaneously when the track engineering vehicle in the operation operating mode of difference, no matter be straight circuit, or ramp circuit, hydraulic motor 403 can both provide sufficient moment of torsion and satisfy the automatic flexible function that removes the cover, and hydraulic motor 403 stall state has self-locking function moreover, and stability is high during the protection casing stall state, can also thoroughly solve artifical potential safety hazards such as back swift current that artifical push-and-pull protection casing probably produced.

The pin rack 409 is matched with the roller pin gear 404 to realize the function of linear pin tooth transmission, the pin tooth transmission is a special gear transmission, a small wheel of the pin tooth transmission is called a gear, a large wheel with round pin teeth is called a pin wheel, and when the round pin teeth are uniformly distributed on a straight line, the pin rack is called a pin rack. In the embodiment of the invention, the pin tooth transmission is in a linear meshing mode of a pin rack, and the gear tooth profile curve is an involute curve. Because the gear of the pin wheel is a round pin, compared with the common gear, the pin wheel has the advantages of simple and reliable structure, convenient maintenance and replacement, convenient processing, low manufacturing cost, constant instantaneous transmission ratio, high stability, low noise, high transmission efficiency and the like.

Claims (10)

1. The utility model provides an automatic telescopic protection casing, its includes telescopic protection casing (1), fixed function room (2), vehicle chassis (3), transmission (4) slide, removes cover gyro wheel (5), guide rail (6) and leading wheel (8), its characterized in that: the fixed function room (1) is arranged on a vehicle underframe (2), at least one guide rail (6) is arranged on the vehicle underframe (2), at least one movable cover roller (5) is arranged on the telescopic protective cover (1), the movable cover rollers (5) slide in the guide rails (6) which are fixed on the vehicle underframe (3) and are parallel to each other, the inner cavity of the telescopic protective cover (1) is sleeved outside the fixed function room (2) and is used in a matching way, the telescopic protective cover (1) is arranged at any position of the front, the middle and the rear of the upper part of the vehicle underframe (3) according to the use requirement, and the guide wheels (8) are arranged outside the two sides of the fixed function room (2); the sliding transmission mechanism (4), the telescopic protective cover (1) and the fixing functional room (2) are connected and fixed with each other, and the telescopic movement of the telescopic protective cover (1) is realized through the transmission of the sliding transmission mechanism (4).

2. The automatic retractable shield of claim 1, wherein: the sliding transmission mechanism (4) comprises a horizontal adjusting fixed support (401), a vertical adjusting fixed support (402), a hydraulic motor (403), a rolling pin gear (404) and a pin rack (409), and the horizontal adjusting fixed support (401) is connected and fixed at the upper position of the center of the outer side of the side wall of the fixed functional room (2) through a fastener (405).

3. The automatic retractable shield of claim 2, wherein: the screw hole of the horizontal adjusting fixing support (401) is a transverse through hole, the width of the transverse through hole is not less than the diameter of the fastening piece, and the length of the transverse through hole is not less than 1.5-2 times of the diameter of the fastening piece.

4. The automatic retractable shield of claim 2, wherein: the screw hole of the vertical adjusting fixing support (402) is a vertical through hole, the width of the vertical through hole is not less than the diameter of the fastening piece, and the length of the transverse through hole is not less than 1.5-2 times of the diameter of the fastening piece.

5. The automatic retractable shield of claim 2, wherein: the pin rack (409) comprises a clamping plate (4091), a pin cylinder (4092) and round pin teeth (4093), wherein the clamping plate (4091) in the pin rack (409) is provided with through holes with standard pitch size, and the round pin teeth (4093) are sleeved on the pin cylinder (4092) and fixedly connected with the clamping plate (4091) through the pin cylinder (4092).

6. The automatic retractable shield of claim 2 or 5, wherein: the pin rack (409) comprises several standard knots of equal length, typically less than 1 meter, and one non-standard knot, the length of which is determined by the total length of the pin rack (409) that meets the design requirements.

7. The automatic retractable shield of claim 1, wherein: the movable cover roller (5) comprises a roller (501), a roller support (502) and a barrier remover (503), the roller (501) is connected and fixed on a shaft (504) of the roller support (502), and the barrier remover (504) is installed on two sides of the roller support (502).

8. The automatic retractable shield of claim 1, wherein: the guide rail (6) comprises a U-shaped rail groove (601), a lower guide rail (602) and an upper guide rail (603), the lower guide rail (602) is fixed on the lower side of the inside of the U-shaped rail groove (601) through a countersunk head screw (604), and the upper guide rail (603) is fixed on the upper side of the inside of the U-shaped rail groove (601) in a welding mode.

9. The automatic retractable shield of claim 7, wherein: the obstacle deflector (503) is connected with the roller support (502) through spot welding after the position is adjusted, the obstacle deflector (503) is sleeved below the roller (501) and the roller support (502), the transverse section of the obstacle deflector (503) is concave with a downward opening, the concave opening is matched with the lower guide rail (602), and during operation, the upper part of the lower guide rail (602) is positioned in the concave opening of the obstacle deflector (503).

10. An automatic telescopic operation method of a protective cover is characterized by comprising the following steps:

step S1, the operation vehicle is driven to the road section to be operated, the driving device is started, the pin teeth at the output shaft end of the driving device rotate forwards or backwards along the pin rack meshed with the pin teeth, and the sliding transmission mechanism (4) is promoted to drive the telescopic protective cover (1) to slide forwards or backwards relative to the fixed functional room (2);

s1.1, when the left and right direction deviation occurs in the matching between the pin teeth and the pin rack (409), adjusting a horizontal adjusting fixed support (401) to enable the horizontal adjusting fixed support (401) to slightly adjust the deviation distance leftwards or rightwards relative to a fixed functional room (2), and then fastening the horizontal adjusting fixed support (401) relative to the fixed functional room (2) to finish the transverse adjustment of the pin teeth;

s1.2, when the pin teeth and the pin rack (409) are vertically matched to generate errors, adjusting the relative position between the vertical adjusting fixed support (402) and the fixing functional chamber (2), and then connecting and fastening the vertical adjusting fixed support (402) and the fixing functional chamber (2) to finish vertical adjustment of the pin teeth;

step S2, when the telescopic protective cover (1) is moved to the space on the vehicle underframe (3) to meet the operation requirement, the driving device is closed, and the telescopic protective cover (1) is still relative to the vehicle underframe (3);

step S3, performing work in a space formed by the telescopic protective cover (1) and the vehicle underframe (3);

step S4, after the operation is finished, the driving device is started again, the driving device rotates in the opposite direction to drive the pin teeth at the output shaft end to rotate backwards or forwards along the pin rack (409), so that the telescopic protective cover (1) moves towards the direction close to the fixed functional room (2) until the initial position;

step S5, the running gear is started to drive the operation vehicle away from the operation section;

steps S1, S2, S3, S4, S5 are performed in sequence, or steps S1.1, S1, S2, S3, S4, S5 are performed in sequence, or steps S1.2, S1, S2, S3, S4, S5 are performed in sequence, or steps S1.1, S1.2, S1, S2, S3, S4, S5 are performed in sequence.

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