CN109487729A - The device that vehicle passes through within the scope of a kind of specific width that municipal works use - Google Patents

Abstract

The invention belongs to limit for width engineering device technique fields, more particularly to a kind of device that vehicle passes through within the scope of specific width that municipal works use, it includes set casing, trigger mechanism etc., limit for width device in the present invention has trigger mechanism, and this it is interior in be provided with identification speed sports bars, the vehicle fast forwarded through makes the sports bars in trigger mechanism make the gear joggleword in the rack gear and trigger mechanism that are connected with sports bars around hinged spot wobble certain angle, two limit for width column mechanisms will become tall and thin from original state is short and stout, distance becomes wide from original state is narrow between two limit for width column mechanisms, the vehicle safety fast forwarded through passes through；The vehicle being advanced slowly will not make the swing certain angle of the triggering block in trigger mechanism that the rack gear and trigger mechanism middle gear that are connected with triggering block are not engaged, trigger mechanism will not work, stored energy mechanism will not work, two limit for width column mechanisms will maintain original state short and stout, achieve the purpose that the vehicle of specific width range passes through.

Description

The device that vehicle passes through within the scope of a kind of specific width that municipal works use

Technical field

The invention belongs to vehicles within the scope of limit for width engineering device technique field more particularly to a kind of specific width that municipal works use The device passed through.

Background technique

Block of wood that current existing limit for width device mostly uses cement to pour either built-in water of plastic barrel, sets certain width Degree is placed on road surface, plays the purpose for limiting width to passing vehicle when vehicle passes through；But when driver is at night Warning strip long-time solarization during driving on limit for width block of wood will lose the effect of warning, so that automobile is easily hit On limit for width block of wood, and speed cracking can hit the limit for width block of wood being arranged on road surface, it will give driver and passenger inside the vehicle Cause great actual bodily harm；Even if simultaneously warning strip have the effect of warn, driver's long-duration driving have feeling of fatigue or The absent-minded limit for width block of wood for not seeing front side of person driver, speed can quickly at this time, and driver is not certain about the width of limit for width column again Range, automobile will hit the limit for width block of wood being arranged on road surface, and limit for width block of wood will cause greatly to driver and passenger inside the vehicle Actual bodily harm, the life of people be it is priceless, we should more protect the life of people to opposite limit for width block of wood, so designing a kind of city The device that vehicle passes through within the scope of the specific width that political and ideological work journey uses is necessary.

The present invention design the device that vehicle passes through within the scope of a kind of specific width that municipal works use solve the problems, such as it is as above.

Summary of the invention

(1) the technical problem to be solved in the present invention

The problem to be solved in the present invention is to provide the device that vehicle within the scope of a kind of specific width that municipal works use passes through, with Overcome after limit for width device width is set in the prior art, for vehicle, quickly or at a slow speed Shi Douhui plays the mesh for limiting width , if the vehicle quickly moved hits limit for width device and will be severely affected power, thus in driver and vehicle Passenger causes great personal injury.

(2) technical solution of the present invention

To solve drawbacks described above in the prior art, the present invention discloses vehicle within the scope of a kind of specific width that municipal works use By device, it adopts the following technical solutions to realize.

The device that vehicle passes through within the scope of a kind of specific width that municipal works use, it is characterised in that: it includes fixing Shell, trigger mechanism, limit for width column mechanism, stored energy mechanism, square groove, the first accommodating chamber, the second accommodating chamber, are wherein provided on set casing The square groove of multiple installation trigger mechanisms, and trigger mechanism is mounted in each square groove；Installation energy storage is additionally provided on set casing Second accommodating chamber of two symmetrical limit for width column mechanisms of the first accommodating chamber and installation of mechanism, and the first accommodating chamber is held with second Chamber of receiving communicates；Multiple square grooves are respectively positioned on the upside of the first accommodating chamber, and multiple square grooves are communicated with the first accommodating chamber；Two limit for width columns Mechanism is respectively positioned on trigger mechanism side, and stored energy mechanism is located on the downside of trigger mechanism.

Identification speed and the triggering block by hingedly installing are provided in the trigger mechanism, the vehicle fast forwarded through is to touching Sending out mechanism has biggish impact force, so that the triggering block in trigger mechanism surrounds hinged spot wobble, and the swing angle makes Obtain the rack gear and trigger mechanism middle gear joggleword being connected with triggering block；The movement of triggering block is arranged thereon in trigger mechanism Rack-and-pinion transmitting so that stored energy mechanism by vehicle by limit for width column mechanism side trigger mechanism kinergety store under Come；Vehicle reaches near limit for width column mechanism, and stored energy mechanism quick release of energy drives multiple connecting rods composition in limit for width column mechanism Link mechanism work, two limit for width column mechanisms will become tall and thin from original state is short and stout, the spacing of two limit for width column mechanisms Become wide from from original state is narrow, the vehicle fast forwarded through is by safety；The vehicle being advanced slowly to trigger mechanism have compared with Big impact force, so that the triggering block in trigger mechanism surrounds hinged spot wobble, and the swing angle makes and triggering block phase Rack gear and trigger mechanism middle gear even will not engage, and trigger mechanism will not work, and stored energy mechanism will not work, two limits Kuan Zhu mechanism will maintain original state short and stout, achieve the purpose that the vehicle of specific width range passes through.

It is advanced optimized as this technology, the trigger mechanism includes T-slot, L-shaped installing plate, support spring, return plate Spring, sports bars, first gear, the first rack gear, second gear, holding tank, the first fixing axle, the first fixed plate, the first guide groove, One guide block, swing bar, notch are wherein provided with the holding tank of perforation on swing bar end face；Holding tank is symmetrically installed on two sides Two the first guide blocks；Swing bar, which has, to be symmetrically installed on the two sides of the first guide block there are two straight pin, and swing bar passes through it The circular hole opened on two straight pins of upper installation and square groove end face, which is rotatably assorted, to be mounted in square groove；Swing bar two sides are symmetrically divided There are two return leaf spring, return leaf spring one end to be fixedly mounted on swing bar side for cloth, and the return leaf spring other end is fixedly mounted on On square groove side；First guide groove there are two symmetrically being opened on sports bars two sides；Sports bars pass through the cunning of the first guide groove and the first guide block It is dynamic to be fitted in holding tank；Support spring is mounted in two the first guide grooves, support spring one end is fixedly mounted on On one guide groove end face, the support spring other end is fixedly mounted on the first guide block end face；Sports bars lower end surface two sides are symmetrically installed There are two the first rack gears；Notch is provided on first gear periphery；First gear is mounted in the first accommodating chamber by axis, and the One gear and two the first rack gears cooperate；T-slot is provided on the side of L-shaped installing plate upper end；The fixed peace in L-shaped installing plate lower end surface On the first accommodating chamber bottom surface；First fixed plate lower end surface is fixedly mounted on L-shaped installing plate upper surface；First fixing axle one End is fixedly mounted on the first fixed plate side；Second gear is mounted in the first fixing axle by bearing, and second gear with First gear engagement.

It is advanced optimized as this technology, limit for width column mechanism includes supporting mechanism, peripheral canvas, the first movement circle Plate, guide post, second move plectane, screw rod, return spring, spring mounting plate, internal screw thread, external screw thread, guide hole, wherein screw rod one Two sections of symmetrical external screw threads are provided on the periphery of end；The not set externally threaded one end of screw rod sequentially passes through the upper end of set casing Face, the second accommodating chamber are mounted on set casing by being rotatably assorted；It is opened on first movement plectane and the second movement plectane end face There are the internal screw thread of perforation and the guide hole of two perforations；First movement plectane and the second movement plectane pass through internal screw thread and spiral shell thereon Symmetrical external screw thread is mounted on screw rod by being threadedly engaged on bar；It is circumferential equal between first movement plectane and the second movement plectane Even is distributed with multiple supporting mechanisms；It is connected on the outside of multiple supporting mechanisms by replaceable peripheral canvas；Two guidance Column one end is fixedly mounted on set casing end face, and guide post is formed with the guide hole on the first movement plectane and the second movement plectane It is slidably matched；Two spring mounting plates are symmetrically mounted on screw rod about the plane of symmetry of the first movement plectane and the second movement plectane On, and it is provided with return spring between two spring mounting plates and the first movement plectane and the second movement plectane, one of them Return spring one end is fixedly mounted on the first movement plectane end face, and the other end is fixedly mounted in spring installation plate end face；Separately One return spring one end is fixedly mounted on the second movement plectane end face, and the other end is fixedly mounted on spring installation plate end face On；Screw rod and stored energy mechanism cooperate.

It is advanced optimized as this technology, the stored energy mechanism includes third gear, reset spring, the second fixing axle, axis Set, the second rack gear, third rack gear, T-bar, energy-stored spring, the first telescopic rod, the second fixed plate, pushing block, fixed square plate, the Three fixed plates, the first limited block, the 4th fixed plate, the second limited block, third fixing axle, the 4th gear, third belt, the 4th consolidate Dead axle, the 5th fixed plate, first bevel gear, damper rod, notch, second bevel gear, support leaf spring, the 5th fixing axle, unidirectional ring, Second guide groove, the 5th gear, the first trunnion, the second guide block, the first inclined-plane, the second inclined-plane, limit leaf spring, wherein on third rack gear Downside teeth far from limit for width column mechanism tilts；Teeth on the upside of third rack gear are normal teeth；It is fixed on third rack gear side T-bar is installed；Third rack gear is slidably installed in L-shaped installing plate by T-bar and T-slot, and second gear with Teeth engagement on the upside of third gear；The side of second fixed plate side is fixedly mounted on third rack gear side；Pushing block passes through First telescopic rod is mounted in the second fixed plate；It is nested with energy-stored spring on the outside of first telescopic rod, and energy-stored spring one end is fixed It is mounted in the second fixed plate end face, the energy-stored spring other end is fixedly mounted on pushing block end face；Second rack gear one end is fixed It is mounted on pushing block side；Axle sleeve one end is fixedly mounted on the first accommodating chamber bottom surface；Second fixing axle one end passes through bearing It is mounted in axle sleeve；Third gear is mounted in the second fixing axle by key, and third gear is engaged with the second rack gear；Two Four fixed plate one end are fixedly mounted on the first accommodating chamber bottom surface, and there are gaps between two the 4th fixed plates；First limit The second inclined-plane and the first inclined-plane are had on the two sides of position block upper end, and the inclination angle on the second inclined-plane is greater than the first inclined-plane Inclination angle；First limited block is mounted between two the 4th fixed plates by damper rod, and the second inclined-plane on the first limited block Cooperate with pushing block；Damper rod two sides are distributed with support leaf spring, and support leaf spring one end is fixedly mounted on the first accommodating chamber bottom surface On, the support leaf spring other end is fixedly mounted on the first limited block lower end surface；5th fixing axle is mounted on two by bearing In the circular hole opened in four fixed plates；5th gear is mounted in the 5th fixing axle by unidirectional ring, and the 5th gear and first The teeth engagement opened on limited block side；One end that 5th fixing axle stretches out the 4th fixed plate is fitted with second by key Bevel gear；5th fixed plate lower end surface is fixedly mounted on the first accommodating chamber bottom surface；4th fixing axle is mounted on by bearing In the circular hole opened in five fixed plates；First bevel gear one end is fixedly mounted in the 4th fixed axial end, and first bevel gear It is engaged with second bevel gear；Two third fixed plate lower end surfaces are fixedly mounted on the first accommodating chamber bottom surface, and two thirds Fixed plate is symmetrically provided with the second guide groove on opposite end face；Second guide block there are two being symmetrically installed on fixed square plate end face；It is fixed Square plate is slidably installed between two third fixed plates by the second guide block and the second guide groove；It is equipped in second guide groove Reset spring, reset spring one end are fixedly mounted on the second guide groove end face, and the reset spring other end is fixedly mounted on second and leads On block end face；Third fixing axle is mounted in two third fixed plates by bearing；4th gear is mounted on third by key and consolidates On dead axle, and the teeth opened on the 4th gear and fixed square plate side cooperate；The notch of perforation is provided on 4th gear face, And present device install after the perforation notch and fixed square plate side on the teeth opened cooperate；4th fixing axle and the It is linked together between three fixing axles by third belt；Two the first trunnion lower end surfaces are symmetrically mounted on fixed square plate upper surface On；Second limited block is mounted between two the first trunnions by straight pin, and the tooth on the downside of the second limited block and third rack gear Tooth cooperation；Limit leaf spring one end is fixedly mounted on the second limited block end face, and the limit leaf spring other end is fixedly mounted on fixation side In plate end face, and limits leaf spring and be distributed close to the first limited block.

It is advanced optimized as this technology, the supporting mechanism includes first connecting rod, the second telescopic rod, second connecting rod, Two trunnions, third connecting rod, third trunnion, the 4th trunnion, the second trunnion of two of them are symmetrically mounted on the first movement plectane lower end On face；Two third trunnions are symmetrically mounted on the second movement plectane upper surface, and two third trunnions are located at two second Immediately below ear；Second connecting rod upper and lower end faces are symmetrically installed there are two the 4th trunnion；Second connecting rod is pacified by the second telescopic rod On screw rod, and second connecting rod and the second trunnion cooperate；Second telescopic rod is located between two spring mounting plates；Second connecting rod Upper end passes through the 4th trunnion installed thereon and first connecting rod one end by cylinder pin connection, and the first connecting rod other end passes through circle Pin is connect with two the second trunnions；Second connecting rod lower end passes through the 4th trunnion installed thereon and passes through with third connecting rod one end Cylinder pin connection, the third connecting rod other end are connect by straight pin with two third trunnions.

It is advanced optimized as this technology, second fixing axle and the screw rod in two limit for width column mechanisms pass through the respectively One belt links together with the second belt.

It is advanced optimized as this technology, the coefficient of elasticity of the energy-stored spring is less than the coefficient of elasticity of return spring.

(3) the advantages of the present invention

Relative to traditional limit for width device technique, the limit for width device in the present invention has trigger mechanism, and the interior middle setting is insighted The sports bars of other speed, the vehicle fast forwarded through make the sports bars in trigger mechanism around hinged spot wobble certain angle Gear joggleword in the rack gear and trigger mechanism being connected with sports bars；The movement of sports bars is arranged thereon in trigger mechanism Rack-and-pinion transmitting so that stored energy mechanism by vehicle by limit for width column mechanism side trigger mechanism kinergety store under Come；The vehicle fast forwarded through reaches near limit for width column mechanism, and stored energy mechanism quick release of energy drives more in limit for width column mechanism The link mechanism work of a connecting rod composition, two limit for width column mechanisms will become tall and thin from original state is short and stout, two limit for width columns Distance becomes wide from original state is narrow between mechanism, and the vehicle fast forwarded through is by safety；The vehicle being advanced slowly will not make The triggering block swing certain angle obtained in trigger mechanism engages the rack gear and trigger mechanism middle gear that are connected with triggering block not, Trigger mechanism will not work, and stored energy mechanism will not work, and two limit for width column mechanisms will maintain original state short and stout, reach The purpose that the vehicle of specific width range passes through.

Detailed description of the invention

Fig. 1 is global facility distribution schematic diagram.

Fig. 2 is limit for width column mechanism mounting structure schematic diagram.

Fig. 3 is trigger mechanism mounting structure schematic diagram.

Fig. 4 is fixed shell structure (one) schematic diagram.

Fig. 5 is fixed shell structure (two) schematic diagram.

Fig. 6 is stored energy mechanism mounting structure schematic diagram.

Fig. 7 is trigger mechanism distribution schematic diagram.

Fig. 8 is trigger mechanism movement schematic diagram.

Fig. 9 is trigger mechanism structural schematic diagram.

Figure 10 is L-shaped installing plate structure (one) schematic diagram.

Figure 11 is L-shaped installing plate structure (two) schematic diagram.

Figure 12 is the first rack gear mounting structure schematic diagram.

Figure 13 is sports bars structural schematic diagram.

Figure 14 is the first guide block mounting structure schematic diagram.

Figure 15 is first gear structural schematic diagram.

Figure 16 is the second belt mounting structure schematic diagram.

Figure 17 is energy-stored spring mounting structure schematic diagram.

Figure 18 is T-bar mounting structure schematic diagram.

Figure 19 is pushing block mounting structure schematic diagram.

Figure 20 is the first limited block mounting structure schematic diagram.

Figure 21 is support leaf spring mounting structure schematic diagram.

Figure 22 is third fixed plate structure schematic diagram.

Figure 23 is second bevel gear mounting structure schematic diagram.

Figure 24 is the second guide block mounting structure schematic diagram.

Figure 25 is the 4th fixing axle mounting structure schematic diagram.

Figure 26 is the first standoff features schematic diagram.

Figure 27 is the second limited block mounting structure schematic diagram.

Figure 28 is the first belt mounting structure schematic diagram.

Figure 29 is peripheral canvas mounting structure schematic diagram.

Figure 30 is the second movement plectane mounting structure schematic diagram.

Figure 31 is spring mounting plate mounting structure schematic diagram.

Figure 32 is the second telescopic rod mounting structure schematic diagram.

Figure 33 is first connecting rod mounting structure schematic diagram.

Figure 34 is the 4th trunnion mounting structure schematic diagram.

Figure 35 is the first movement Circular plate structure schematic diagram.

Figure 36 is the second movement Circular plate structure schematic diagram.

Figure 37 is the 4th working gear flow diagram.

Figure 38 is reset spring mounting structure schematic diagram.

Figure label title: 1, set casing；2, trigger mechanism；3, limit for width column mechanism；4, stored energy mechanism；5, square groove；6, One accommodating chamber；7, the second accommodating chamber；8, L-shaped installing plate；9, T-slot；10, support spring；11, return leaf spring；12, sports bars； 13, first gear；14, the first rack gear；15, second gear；16, the first fixing axle；17, the first fixed plate；18, the first guide groove； 19, the first guide block；20, swing bar；21, notch；22, third gear；23, the first belt；24, the second fixing axle；25, axle sleeve； 26, the second belt；27, the second rack gear；28, third rack gear；29, T-bar；30, energy-stored spring；31, the first telescopic rod；32, Two fixed plates；33, pushing block；34, fixed square plate；35, third fixed plate；36, the first limited block；37, the 4th fixed plate；38, Second limited block；39, third fixing axle；40, the 4th gear；41, third belt；42, the 4th fixing axle；43, the 5th fixed plate； 44, first bevel gear；45, damper rod；46, second bevel gear；47, leaf spring is supported；48, the 5th fixing axle；49, unidirectional ring；50, Second guide groove；51, the 5th gear；52, the first trunnion；53, the second guide block；54, the first inclined-plane；55, the second inclined-plane；56, it limits Leaf spring；57, supporting mechanism；58, peripheral canvas；59, the first movement plectane；60, guide post；61, the second movement plectane；62, spiral shell Bar；63, return spring；64, spring mounting plate；65, first connecting rod；66, the second telescopic rod；67, second connecting rod；68, second Ear；69, third connecting rod；70, third trunnion；71, the 4th trunnion；72, internal screw thread；73, external screw thread；74, guide hole；75, holding tank； 76, reset spring；77, notch.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below Example is not intended to limit the scope of the invention for illustrating the present invention.

As shown in Figure 1, 2, 3, it includes set casing 1, trigger mechanism 2, limit for width column mechanism 3, stored energy mechanism 4, square groove 5, One accommodating chamber 6, the second accommodating chamber 7 are wherein provided with the square groove of multiple installation trigger mechanisms 2 as shown in Figure 4,5 on set casing 1 5, and trigger mechanism 2 is mounted in each square groove 5；As shown in figure 4, being additionally provided with the of installation stored energy mechanism 4 on set casing 1 Second accommodating chamber 7 of two symmetrical limit for width column mechanisms 3 of one accommodating chamber 6 and installation, and the first accommodating chamber 6 and the second accommodating chamber 7 communicate；As shown in Figure 4,5, multiple square grooves 5 are respectively positioned on the upside of the first accommodating chamber 6, and multiple square grooves 5 with 6 phase of the first accommodating chamber It is logical；As shown in Fig. 6,7,9, two limit for width column mechanisms 3 are respectively positioned on 2 side of trigger mechanism, and stored energy mechanism 4 is located at trigger mechanism 2 Downside.

Identification speed and the triggering block by hingedly installing, the vehicle pair fast forwarded through are provided in the trigger mechanism 2 Trigger mechanism 2 has biggish impact force, so that the triggering block in trigger mechanism 2 surrounds hinged spot wobble, and the angle of oscillation Degree is so that the 2 middle gear joggleword of rack gear and trigger mechanism being connected with triggering block；The movement of triggering block is through it in trigger mechanism 2 The rack-and-pinion of upper setting is transmitted, so that stored energy mechanism 4 is by vehicle by the movement of the trigger mechanism 2 of 3 side of limit for width column mechanism Energy storage gets off；Vehicle reaches near limit for width column mechanism 3, and 4 quick release of energy of stored energy mechanism drives in limit for width column mechanism 3 The link mechanism work of multiple connecting rod compositions, two limit for width column mechanisms 3 will become tall and thin from original state is short and stout, two limits for width Distance becomes wide from original state is narrow between column mechanism 3, and the vehicle fast forwarded through is by safety；The vehicle being advanced slowly is to touching Sending out mechanism 2 has biggish impact force, so that the triggering block in trigger mechanism 2 surrounds hinged spot wobble, and the swing angle So that the rack gear and 2 middle gear of trigger mechanism that are connected with triggering block will not engage, trigger mechanism 2 will not work, stored energy mechanism 4 It will not work, two limit for width column mechanisms 3 will maintain original state short and stout, reach the mesh that the vehicle of specific width range passes through 's.

As shown in Fig. 8,12, the trigger mechanism 2 includes T-slot 9, L-shaped installing plate 8, support spring 10, return leaf spring 11, sports bars 12, first gear 13, the first rack gear 14, second gear 15, holding tank 75, the first fixing axle 16, the first fixed plate 17, the first guide groove 18, the first guide block 19, swing bar 20, notch 21 are wherein provided on 20 end face of swing bar and pass through as shown in figure 14 Logical holding tank 75；As shown in figure 14, the first guide block 19 there are two being symmetrically installed on 75 two sides of holding tank；Swing bar 20 has Be symmetrically installed on the two sides of first guide block 19 there are two straight pin, and swing bar 20 pass through two straight pins installing thereon with The circular hole opened on 5 end face of square groove, which is rotatably assorted, to be mounted in square groove 5；As shown in figure 12,20 two sides of swing bar are symmetrically distributed with Two return leaf springs 11,11 one end of return leaf spring are fixedly mounted on 20 side of swing bar, the fixed peace of 11 other end of return leaf spring On 5 side of square groove；As shown in figure 13, the first guide groove 18 there are two symmetrically being opened on 12 two sides of sports bars；As shown in figure 12, it transports Dynamic item 12 is slidably installed in holding tank 75 by the first guide groove 18 and the first guide block 19；In two the first guide grooves 18 Support spring 10 is installed, 10 one end of support spring is fixedly mounted on 18 end face of the first guide groove, and 10 other end of support spring is solid Dingan County is on 19 end face of the first guide block；As shown in figure 12,12 lower end surface two sides of sports bars are symmetrically installed there are two the first rack gear 14；As shown in figure 15, notch 21 is provided on 13 periphery of first gear；First gear 13 is mounted on the first accommodating chamber 6 by axis It is interior, and first gear 13 and two the first rack gears 14 cooperate；As shown in Figure 10,11, T is provided on the side of 8 upper end of L-shaped installing plate Shape slot 9；8 lower end surface of L-shaped installing plate is fixedly mounted on 6 bottom surface of the first accommodating chamber；First fixed plate, 17 lower end surface is fixedly mounted On 8 upper surface of L-shaped installing plate；First fixing axle, 16 one end is fixedly mounted on 17 side of the first fixed plate；As shown in figure 12, Second gear 15 is mounted in the first fixing axle 16 by bearing, and second gear 15 is engaged with first gear 13.

As shown in figure 16, limit for width column mechanism 3 includes supporting mechanism 57, the peripheral movement of canvas 58, first plectane 59, draws Guide post 60, second moves plectane 61, screw rod 62, return spring 63, spring mounting plate 64, internal screw thread 72, external screw thread 73, guide hole 74, as shown in figure 30, two sections of symmetrical external screw threads 73 are wherein provided on 62 one end periphery of screw rod；The not set outer spiral shell of screw rod 62 One end of line 73 sequentially passes through the upper surface of set casing 1, the second accommodating chamber 7 is mounted on set casing 1 by being rotatably assorted；Such as figure 35, shown in 36, the internal screw thread 72 of perforation is provided on the first movement plectane 59 and the second movement 61 end face of plectane and two penetrate through Guide hole 74；First movement plectane 59 and the second movement plectane 61 pass through symmetrical outer spiral shell on internal screw thread 72 and screw rod 62 thereon Line 73 is mounted on screw rod 62 by being threadedly engaged；As shown in Figure 30,31, 32, the first movement plectane 59 and the second movement plectane It is circumferentially uniform between 61 that multiple supporting mechanisms 57 are distributed with；As shown in figure 29, by replaceable on the outside of multiple supporting mechanisms 57 Peripheral canvas 58 connect；Two 60 one end of guide post are fixedly mounted on 1 end face of set casing, and guide post 60 and first The formation of guide hole 74 on movement plectane 59 and the second movement plectane 61 is slidably matched；As shown in figure 33, two spring mounting plates 64 The plane of symmetry about the first movement plectane 59 and the second movement plectane 61 is symmetrically mounted on screw rod 62, and two spring mounting plates 64 and first movement plectane 59 and second movement plectane 61 between be provided with return spring 63, as shown in figure 32, one of them 63 one end of return spring is fixedly mounted on 59 end face of the first movement plectane, and the other end is fixedly mounted on 64 end face of spring mounting plate On；Another 63 one end of return spring is fixedly mounted on 61 end face of the second movement plectane, and the other end is fixedly mounted on spring peace On 64 end face of loading board；Screw rod 62 and stored energy mechanism 4 cooperate.

As shown in Figure 17,20, the stored energy mechanism 4 includes third gear 22, reset spring 76, the second fixing axle 24, axis It covers the 25, second rack gear 27, third rack gear 28, T-bar 29, energy-stored spring 30, the first telescopic rod 31, the second fixed plate 32, push Block 33, fixed square plate 34, third fixed plate 35, the first limited block 36, the 4th fixed plate 37, the second limited block 38, third are fixed Axis 39, third belt 41, the 4th fixing axle 42, the 5th fixed plate 43, first bevel gear 44, damper rod 45, is cut the 4th gear 40 Mouth 77, second bevel gear 46, support leaf spring 47, the 5th fixing axle 48, unidirectional ring 49, the second guide groove 50, the 5th gear 51, first Trunnion 52, the second guide block 53, the first inclined-plane 54, the second inclined-plane 55, limit leaf spring 56, as shown in figure 18, wherein third rack gear 28 On downside teeth far from limit for width column mechanism 3 tilt；The teeth of 28 upside of third rack gear are normal teeth；As shown in figure 18, Three rack gears is fixedly installed with T-bar 29 on 28 side；As shown in figure 17, third rack gear 28 passes through the cunning of T-bar 29 and T-slot 9 It is dynamic to be fitted in L-shaped installing plate 8, and second gear 15 is engaged with 22 upside teeth of third gear；Second fixed plate 32 1 The side of side is fixedly mounted on 28 side of third rack gear；As shown in figure 18, pushing block 33 is mounted on by the first telescopic rod 31 In second fixed plate 32；As shown in figure 19, energy-stored spring 30 is nested on the outside of the first telescopic rod 31, and 30 one end of energy-stored spring is solid On 32 end face of the second fixed plate, 30 other end of energy-stored spring is fixedly mounted on 33 end face of pushing block for Dingan County；Such as Figure 16 institute Show, 27 one end of the second rack gear is fixedly mounted on 33 side of pushing block；25 one end of axle sleeve is fixedly mounted on 6 bottom surface of the first accommodating chamber On；As shown in figure 16,24 one end of the second fixing axle is mounted in axle sleeve 25 by bearing；As shown in figure 16, third gear 22 is logical It crosses key to be mounted in the second fixing axle 24, and third gear 22 is engaged with the second rack gear 27；As shown in figure 21, two the 4th fixations 37 one end of plate is fixedly mounted on 6 bottom surface of the first accommodating chamber, and there are gaps between two the 4th fixed plates 37；Such as Figure 26 institute Show, have the second inclined-plane 55 and the first inclined-plane 54 on the two sides of 36 upper end of the first limited block, and the second inclined-plane 55 inclines Oblique angle is greater than the inclination angle on the first inclined-plane 54；As shown in figure 21, the first limited block 36 is mounted on two the 4th by damper rod 45 The second inclined-plane 55 between fixed plate 37, and on the first limited block 36 cooperates with pushing block 33；As shown in figure 21,45 liang of damper rod Side is distributed with support leaf spring 47, and support 47 one end of leaf spring is fixedly mounted on 6 bottom surface of the first accommodating chamber, and support leaf spring 47 is another End is fixedly mounted on 36 lower end surface of the first limited block；As shown in figure 21, the 5th fixing axle 48 is mounted on two by bearing In the circular hole opened in four fixed plates 37；As shown in figure 21, the 5th gear 51 is mounted on the 5th fixing axle 48 by unidirectional ring 49 On, and the teeth opened on the 5th gear 51 and 36 side of the first limited block engage；As shown in figure 21, the 5th fixing axle 48 is stretched out One end of 4th fixed plate 37 is fitted with second bevel gear 46 by key；5th fixed plate, 43 lower end surface is fixedly mounted on On one accommodating chamber, 6 bottom surface；As shown in figure 23, the 4th fixing axle 42 is mounted on the circular hole opened in the 5th fixed plate 43 by bearing It is interior；As shown in figure 21,44 one end of first bevel gear is fixedly mounted on 42 end face of the 4th fixing axle, and first bevel gear 44 and The engagement of two bevel gears 46；As shown in figure 22, two 35 lower end surfaces of third fixed plate are fixedly mounted on 6 bottom surface of the first accommodating chamber On, and the second guide groove 50 is symmetrically provided on the opposite end face of two third fixed plates 35；As shown in figure 24, fixed 34 end face of square plate On be symmetrically installed there are two the second guide block 53；Fixed square plate 34 passes through the cunning of the second guide block 53 and the second guide groove 50 as shown in figure 23 It is dynamic to be fitted between two third fixed plates 35；As shown in figure 38, reset spring 76 is installed in the second guide groove 50, resets 76 one end of spring is fixedly mounted on 50 end face of the second guide groove, and 76 other end of reset spring is fixedly mounted on 53 end face of the second guide block On；As shown in figure 21, third fixing axle 39 is mounted in two third fixed plates 35 by bearing；As shown in figure 21, the 4th tooth Wheel 40 is mounted in third fixing axle 39 by key, and the teeth opened on the 4th gear 40 and fixed 34 side of square plate cooperate； As Figure 37 a, 37b, 37c, 37d, shown in 37e, the notch 77 of perforation is provided on 40 end face of the 4th gear, and present device is pacified The teeth cooperation opened on fixed 34 side of square plate of the notch 77 of the perforation after installing；As shown in Figure 23,25, the 4th fixing axle 42 It is linked together between third fixing axle 39 by third belt 41；As shown in figure 24, two 52 lower end surfaces pair of the first trunnion Title is mounted on fixed 34 upper surface of square plate；As shown in figure 27, the second limited block 38 is mounted on two first by straight pin Between ear 52, and the second limited block 38 and the teeth of 28 downside of third rack gear cooperate；As shown in figure 27, limit 56 one end of leaf spring is solid On 38 end face of the second limited block, limit 56 other end of leaf spring is fixedly mounted on fixed 34 end face of square plate, and is limited for Dingan County Leaf spring 56 is distributed close to the first limited block 36.

The supporting mechanism 57 includes first connecting rod 65, the second telescopic rod 66, second connecting rod 67, the second trunnion 68, third Connecting rod 69, third trunnion 70, the 4th trunnion 71, the second trunnion of two of them 68 are symmetrically mounted on 59 lower end surface of the first movement plectane On；Two third trunnions 70 are symmetrically mounted on 61 upper surface of the second movement plectane, and two third trunnions 70 are located at two the Immediately below two trunnion 68；As shown in figure 34,67 upper and lower end faces of second connecting rod are symmetrically installed there are two the 4th trunnion 71；Second Connecting rod 67 is mounted on screw rod 62 by the second telescopic rod 66, and second connecting rod 67 and the second trunnion 68 cooperate；Second telescopic rod 66 are located between two spring mounting plates 64；67 upper end of second connecting rod passes through the 4th trunnion 71 and first connecting rod installed thereon 65 one end are connect by straight pin with two the second trunnions 68 by cylinder pin connection, 65 other end of first connecting rod；Second connecting rod 67 lower ends pass through the 4th trunnion 71 installed thereon with 69 one end of third connecting rod by cylinder pin connection, and third connecting rod 69 is another End is connect by straight pin with two third trunnions 70.

As shown in figure 28, the screw rod 62 in second fixing axle 24 and two limit for width column mechanisms 3 passes through the first skin respectively Band 23 links together with the second belt 26.

The coefficient of elasticity of the energy-stored spring 30 is less than the coefficient of elasticity of return spring 63.

Specific embodiment are as follows: the installation pit that an installation present device is excavated first on pavement of road sends out this Bright equipment is mounted in the installation pit；And the limit for width column mechanism 3 in present device is adjusted at the position for needing limit for width；When When driver driver vehicle is slowly reached on front side of present device, it is since the length of return leaf spring 11 is arranged with swing bar 20 Equally long, so return leaf spring 11 at this time is less likely to occur to deform, the vehicle tyre being advanced slowly at this time is to sports bars 12 Smaller impact force return leaf spring 11 will not be made to deform, so swing bar 20 at this time will not be put around straight pin Certain angle is moved, the first rack gear 14 being mounted in swing bar 20 at this time will not be engaged with first gear 13, so that First gear 13 will not rotate；Second gear 15 will not rotate, so stored energy mechanism 4 at this time will not work, at this time Stored energy mechanism 4 will not drive limit for width column mechanism 3 to work, and limit for width column mechanism 3 at this time will play the purpose of limit for width；If driven The person of sailing does not estimate accurately the width range of limit for width column mechanism 3, and Velicle motion velocity at this time is slower, so vehicle is limited The impact force of Kuan Zhu mechanism 3 is smaller, and the injury that personnel are subject in vehicle at this time is also smaller.

When driver driver vehicle quickly reaches on front side of present device, due to the return leaf spring in trigger mechanism 2 11 length setting and swing bar 20 are equally long, so return leaf spring 11 at this time is less likely to occur to deform, but quickly The vehicle tyre of advance will make return leaf spring 11 deform the greater impact power of sports bars 12, so swing at this time Item 20 will swing certain angle around straight pin, and the first rack gear 14 being mounted in swing bar 20 at this time will be with the first tooth 13 engagement of wheel, so that first gear 13 can rotate；First gear 13 will drive second gear 15 to rotate；Rotary motion Second gear 15 will drive third rack gear 28 to move along 9 direction of T-slot；The third rack gear 28 of movement, which will will drive, is mounted on it On the movement of downside teeth, downside teeth will dial through the second limit that straight pin is mounted between two the first trunnions 52 The compression limit leaf spring 56 of block 38；Limit 56 one end of leaf spring is fixedly mounted on 38 end face of the second limited block, and limit leaf spring 56 is another End is fixedly mounted on fixed 34 end face of square plate, and limit leaf spring 56 be close to the purpose of design that the first limited block 36 be distributed ought the Three rack gears 28 allow third rack gear 28 close to limit for width column machine to that can be compressed when moving close to 3 direction of limit for width column mechanism The movement of 3 direction of structure, but limiting leaf spring 56 cannot be stretched, so that third rack gear 28 is to far from 3 direction of limit for width column mechanism Movement be restricted；Third rack gear 28 at this time can only be moved to close to 3 direction of limit for width column mechanism, the third rack gear of movement 28 move will drive fixation square plate 34 mounted thereto, and fixed square plate 34 will will drive energy-stored spring 30 mounted thereto One end is moved to close to 3 direction of limit for width column mechanism；Second by being opened on pushing block 33 and the first limited block 36 at this time is oblique Face 55 and the first inclined-plane 54, and the inclination angle on the second inclined-plane 55 is greater than the inclination angle on the first inclined-plane 54；So pushing block at this time 33 to close to 3 direction of limit for width column mechanism, move be highly difficult, but as moving far from 3 direction of limit for width column mechanism be to hold very much Easily；So position-limiting action of the energy-stored spring 30 close to 3 one end of limit for width column mechanism by the first limited block 36 at this time；Hereafter vapour Vehicle will pass sequentially through multiple trigger mechanisms 2 positioned at 3 front side of limit for width column mechanism, after each trigger mechanism 2 has worked, at this time First gear 13 on the notch 21 opened will cooperate with second gear 15 so that when automobile is to next trigger mechanism 2 effects, next trigger mechanism 2 will same purpose third rack gear 28 can only be to move close to 3 direction of limit for width column mechanism, no Meeting is so that second gear 15 interferes the movement of third rack gear 28；Energy-stored spring 30 in stored energy mechanism 4 can be by automobile by multiple Energy storage on trigger mechanism 2 gets off；When automobile is close to limit for width column mechanism 3, support leaf spring 47 at this time is being mounted on Under the action of pushing block 33 on energy-stored spring 30 will deformation occurs, before this support leaf spring 47 will not deformation occurs；At this time The first limited block 36 will move downward, the purpose of design of damper rod 45 is, when the first limited block 36 move downward be can be non- Often be easy, when the first limited block 36 support leaf spring 47 restoring force effect under movement be will receive damping action change it is slow to Upper movement；During the first limited block 36 at this time moves downward, it will drive the 5th gear by the teeth opened thereon 51 make rotating motion；But the 5th gear 51 at this time, due to the design of unidirectional ring 49, the 5th gear 51 at this time will not band Dynamic 5th fixing axle 48 makes rotating motion；So the first limited block 36 at this time not will drive the second cone during moving downward Gear 46, first bevel gear 44, the 4th fixing axle 42, third belt 41, third fixing axle 39, the 4th gear 40, fixed square plate 34 movements, so the second limited block 38 at this time will will limit the linear movement of third rack gear 28；Energy-stored spring 30 will act on Pushing block 33 crosses the first limited block 36, and after pushing block 33 crosses the first limited block 36, the first limited block 36 at this time will The return under the restoring force effect of support leaf spring 47, but due to there is damper rod 45, so that 36 meeting of the first limited block It slowly resets, during the first limited block 36 slowly resets, it will successively drive the 5th gear 51, unidirectional ring the 49, the 5th Fixing axle 48, second bevel gear 46, first bevel gear 44, the 4th fixing axle 42, third belt 41, third fixing axle the 39, the 4th Gear 40, fixed square plate 34, the first trunnion 52, the second slowly movement of limited block 38, the second limited block 38 at this time will be downward Movement, but the second moving downward for limited block 38 slowly moves, so energy-stored spring 30 at this time can be complete by energy It releases entirely, as shown in Figure 37 b, 37c, 37d, 37e, while present device installs the perforation opened on rear 4th gear 40 Notch 77 and fixed 34 side of square plate on the teeth opened cooperate, the institute on the 4th gear 40 after the completion of the rotation of the 4th gear 40 The notch 77 opened will cooperate with the teeth opened in fixed square plate 34 again, and fixation square plate 34 at this time will be in the second guide groove The restoring force for the reset spring 76 installed in 50 acts on lower Rapid reset and moves upwards, and fixed square plate 34, which will will drive, is mounted on it On the first trunnion 52 move upwards, the first trunnion 52 will drive the second limited block 38 fortune upwards under the action of straight pin It is dynamic, so that teeth of second limited block 38 again with 28 downside of third rack gear at this time cooperate；It is discharged in energy-stored spring 30 During energy, energy-stored spring 30 will will drive pushing block 33 and move, and pushing block 33 will will drive mounted thereto second Rack gear 27 moves, and the second rack gear 27 will will drive third gear 22 and move, and third gear 22 will will drive the second fixing axle 24 and do Rotary motion, the second fixing axle 24 will drive the screw rod 62 in limit for width column mechanism 3 by the first belt 23 and the second belt 26 It makes rotating motion, the screw rod 62 of rotary motion will pass through the external screw thread 73 opened thereon and the first movement plectane 59 and the second fortune The internal screw thread 72 opened on dynamic plectane 61 forms screw-driven, while being opened on the first movement plectane 59 and the second movement plectane 61 Guide hole 74 will with guide post 60 formed be slidably matched so that guide post 60 guidance first move plectane 59 and second When moving the effect of plectane 61, the rotary motion of the first movement plectane 59 and the second movement plectane 61, screw rod at this time will limit It is suitable that the internal screw thread 72 opened on the external screw thread 73 opened on 62 and the first movement plectane 59 and the second movement plectane 61 has Screw pitch and helical angle so that the external screw thread 73 opened on screw rod 62 and first movement plectane 59 with second move plectane 61 on opened Internal screw thread 72 locking phenomenon will not occur；The first movement plectane 59 and the second movement plectane 61 at this time will be in the biography of screw thread Movement is moved with lower opposite direction, and the first movement plectane 59 of opposite direction movement and the second movement plectane 61 will will drive installation First connecting rod 65 and 69 opposite direction of third connecting rod on it moves, and third connecting rod 69 at this time moves downward, first connecting rod 65 move upwards, and second connecting rod 67 will be made to 62 direction of screw rod under the movement effect of first connecting rod 65 and third connecting rod 69 Movement, the peripheral canvas 58 that second connecting rod 67 at this time will to install on the outside, which is shunk to 62 direction of screw rod, to be moved, from And peripheral canvas 58 will be shunk, the motion state of two limit for width column mechanisms 3 is identical, two limit for width column machines at this time Structure 3 will be by the tall and thin of original short and stout change；So that the spacing between two limit for width column mechanisms 3 becomes larger, quickly transport in this way Dynamic vehicle will pass through two limit for width column mechanisms 3, and limit for width column mechanism 3 at this time will not play limit to the movement of vehicle The effect of width processed protects the personal safety of vapour occupant to achieve the purpose that the vehicle that protection quickly moves；Pacify simultaneously On second connecting rod 67 after peripheral 58 long-time solarization of canvas will weathering, so staff needs pair after certain period of time Peripheral canvas 58 is replaced, and present device is operated normally；When the vehicle quickly moved passes through two limit for width columns After mechanism 3, the return spring 63 in limit for width column mechanism 3 at this time will make the first movement plectane 59 and the second movement plectane 61 Position when installation is restored to up, so external screw thread 73 and the first movement plectane that screw rod 62 at this time will be opened on it The 59 screw thread transmitting for moving the internal screw thread 72 opened on plectane 61 with second make rotating motion under acting on, the screw rod 62 of rotary motion The first belt 23 and the second belt 26, the second fixing axle 24, the second rack gear 27, pushing block 33, energy-stored spring will successively be driven 30 movements, since the coefficient of elasticity of return spring 63 at this time is greater than the coefficient of elasticity of energy-stored spring 30, so promotion at this time Block 33 will will push the first limited block 36 and move, and the first limited block 36 at this time will move downward, when pushing block 33 is smooth Across after the first limited block 36, the first limited block 36 at this time will reset under the action of supporting leaf spring 47 and damper rod 45, During first limited block 36 slowly resets, it will successively drive the 5th gear 51, unidirectional ring 49, the 5th fixing axle 48, the Two bevel gears 46, the 4th fixing axle 42, third belt 41, third fixing axle 39, the 4th gear 40, are fixed at first bevel gear 44 Slowly movement, the second limited block 38 at this time will move downward for square plate 34, the first trunnion 52, the second limited block 38, but the Two moving downward for limited block 38 slowly move, and process will the second limited block 38 will not be to third rack gear 28 after the meeting at this time In the movement for playing the role of limit, third rack gear 28 at this time will make stored energy mechanism 4 under the restoring force of return spring 63 Interior structure quickly recovers to initial makeup location, while the notch 77 for the perforation opened on the 4th gear 40 and fixed square plate 34 The teeth cooperation opened on side, after the completion of the rotation of the 4th gear 40 on the 4th gear 40 notch 77 opened will again with The teeth cooperation opened in fixed square plate 34, the reset spring 76 that fixation square plate 34 at this time will be installed in the second guide groove 50 Restoring force act on lower Rapid reset and move upwards, fixed square plate 34 will will drive the first trunnion 52 mounted thereto fortune upwards Dynamic, the first trunnion 52 will drive the second limited block 38 to move upwards under the action of straight pin, so that at this time second Teeth of the limited block 38 again with 28 downside of third rack gear cooperate；Second limited block 38 will again serve to limit to third rack gear 28 The effect of position, 28 return of third rack gear are completed, and so far present device completes primary operation.

In conclusion it is restricted embodiment of the invention, all those skilled in the art that above embodiment, which is not, On the basis of substantive content of the invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this The protection scope of invention.

Claims (7)

1. the device that vehicle passes through within the scope of a kind of specific width that municipal works use, it is characterised in that: it include set casing, Trigger mechanism, limit for width column mechanism, stored energy mechanism, square groove, the first accommodating chamber, the second accommodating chamber, are wherein provided on set casing more The square groove of a installation trigger mechanism, and trigger mechanism is mounted in each square groove；Installation energy storage machine is additionally provided on set casing Second accommodating chamber of two symmetrical limit for width column mechanisms of the first accommodating chamber and installation of structure, and the first accommodating chamber is accommodated with second Chamber communicates；Multiple square grooves are respectively positioned on the upside of the first accommodating chamber, and multiple square grooves are communicated with the first accommodating chamber；Two limit for width column machines Structure is respectively positioned on trigger mechanism side, and stored energy mechanism is located on the downside of trigger mechanism；

Identification speed and the triggering block by hingedly installing are provided in the trigger mechanism, the vehicle fast forwarded through is to triggering machine Structure has biggish impact force so that triggering block in trigger mechanism surrounds hinged spot wobble, and the swing angle make with Triggering block connected rack gear and trigger mechanism middle gear joggleword；Tooth of the movement of triggering block through being arranged thereon in trigger mechanism Rack gear transmitting is taken turns, so that stored energy mechanism stores vehicle by the kinergety of the trigger mechanism of limit for width column mechanism side； Vehicle reaches near limit for width column mechanism, and stored energy mechanism quick release of energy drives the company of multiple connecting rods composition in limit for width column mechanism Linkage work, two limit for width column mechanisms will become tall and thin from original state is short and stout, between two limit for width column mechanisms distance from Original state is narrow to become wide, and the vehicle fast forwarded through is by safety；The vehicle being advanced slowly has trigger mechanism biggish Impact force, so that triggering block in trigger mechanism surrounds hinged spot wobble, and the swing angle to be connected with triggering block Rack gear and trigger mechanism middle gear will not engage, and trigger mechanism will not work, and stored energy mechanism will not work, two limit for width columns Mechanism will maintain original state short and stout, achieve the purpose that the vehicle of specific width range passes through.

2. the device that vehicle passes through within the scope of the specific width that a kind of municipal works according to claim 1 use, special Sign is: the trigger mechanism includes T-slot, L-shaped installing plate, support spring, return leaf spring, sports bars, first gear, first Rack gear, second gear, holding tank, the first fixing axle, the first fixed plate, the first guide groove, the first guide block, swing bar, notch, wherein The holding tank of perforation is provided on swing bar end face；First guide block there are two being symmetrically installed on holding tank two sides；Swing bar has Straight pin there are two being symmetrically installed on the two sides of first guide block, and swing bar passes through two straight pins and square groove installed thereon The circular hole opened on end face, which is rotatably assorted, to be mounted in square groove；Swing bar two sides are symmetrical, and there are two return leaf spring, return plates Spring one end is fixedly mounted on swing bar side, and the return leaf spring other end is fixedly mounted on square groove side；On sports bars two sides First guide groove there are two symmetrically opening；Sports bars are slidably installed in holding tank by the first guide groove and the first guide block；Two Support spring is mounted in a first guide groove, support spring one end is fixedly mounted on the first guide groove end face, and support spring is another One end is fixedly mounted on the first guide block end face；Sports bars lower end surface two sides are symmetrically installed there are two the first rack gear；First gear Notch is provided on periphery；First gear is mounted in the first accommodating chamber by axis, and first gear is matched with two the first rack gears It closes；T-slot is provided on the side of L-shaped installing plate upper end；L-shaped installing plate lower end surface is fixedly mounted on the first accommodating chamber bottom surface； First fixed plate lower end surface is fixedly mounted on L-shaped installing plate upper surface；It is fixed that first fixing axle one end is fixedly mounted on first On plate side；Second gear is mounted in the first fixing axle by bearing, and second gear is engaged with first gear.

3. the device that vehicle passes through within the scope of the specific width that a kind of municipal works according to claim 1 use, special Sign is: limit for width column mechanism include supporting mechanism, peripheral canvas, the first movement plectane, guide post, the second movement plectane, Screw rod, return spring, spring mounting plate, internal screw thread, external screw thread, guide hole, be wherein provided on the periphery of screw rod one end two sections it is right The external screw thread of title；The not set externally threaded one end of screw rod sequentially passes through the upper surface of set casing, the second accommodating chamber is matched by rotation Conjunction is mounted on set casing；The internal screw thread of perforation is provided on first movement plectane and the second movement plectane end face and two penetrate through Guide hole；First, which moves plectane and the second movement plectane, passes through screw thread by external screw thread symmetrical on internal screw thread and screw rod thereon It is fitted on screw rod；It is circumferentially uniform between first movement plectane and the second movement plectane that multiple supporting mechanisms are distributed with； It is connected on the outside of multiple supporting mechanisms by replaceable peripheral canvas；Two guide post one end are fixedly mounted on set casing end On face, and guide post is slidably matched with the guide hole formation on the first movement plectane and the second movement plectane；Two spring mounting plates The plane of symmetry about the first movement plectane and the second movement plectane is symmetrically mounted on screw rod, and two spring mounting plates and first It is provided with return spring between movement plectane and the second movement plectane, one of return spring one end is fixedly mounted on first It moves on plectane end face, the other end is fixedly mounted in spring installation plate end face；Another return spring one end is fixedly mounted on On second movement plectane end face, the other end is fixedly mounted in spring installation plate end face；Screw rod and stored energy mechanism cooperate.

4. according to claim 1 or within the scope of a kind of specific width that uses of municipal works as claimed in claim 2, vehicle passes through Device, it is characterised in that: the stored energy mechanism include third gear, reset spring, the second fixing axle, axle sleeve, the second rack gear, Third rack gear, T-bar, energy-stored spring, the first telescopic rod, the second fixed plate, pushing block, fixed square plate, third fixed plate, first Limited block, the 4th fixed plate, the second limited block, third fixing axle, the 4th gear, third belt, the 4th fixing axle, the 5th fix Plate, first bevel gear, damper rod, notch, second bevel gear, support leaf spring, the 5th fixing axle, unidirectional ring, the second guide groove, the 5th Gear, the first trunnion, the second guide block, the first inclined-plane, the second inclined-plane, limit leaf spring, wherein the downside teeth on third rack gear are remote From limit for width column mechanism tilts；Teeth on the upside of third rack gear are normal teeth；Third rack gear is fixedly installed with T-bar on side； Third rack gear is slidably installed in L-shaped installing plate by T-bar and T-slot, and on the upside of second gear and third gear Teeth engagement；The side of second fixed plate side is fixedly mounted on third rack gear side；Pushing block is pacified by the first telescopic rod In the second fixed plate；Energy-stored spring is nested on the outside of first telescopic rod, and energy-stored spring one end is fixedly mounted on second and consolidates On fixed board end face, the energy-stored spring other end is fixedly mounted on pushing block end face；Second rack gear one end is fixedly mounted on pushing block On side；Axle sleeve one end is fixedly mounted on the first accommodating chamber bottom surface；Second fixing axle one end is mounted in axle sleeve by bearing； Third gear is mounted in the second fixing axle by key, and third gear is engaged with the second rack gear；Two the 4th fixed plate one end It is fixedly mounted on the first accommodating chamber bottom surface, and there are gaps between two the 4th fixed plates；The two of first limited block upper end The second inclined-plane and the first inclined-plane are had on side, and the inclination angle on the second inclined-plane is greater than the inclination angle on the first inclined-plane；First Limited block is mounted between two the 4th fixed plates by damper rod, and the second inclined-plane on the first limited block is matched with pushing block It closes；Damper rod two sides are distributed with support leaf spring, and support leaf spring one end is fixedly mounted on the first accommodating chamber bottom surface, support leaf spring The other end is fixedly mounted on the first limited block lower end surface；5th fixing axle is mounted on institute in two the 4th fixed plates by bearing In the circular hole opened；5th gear is mounted in the 5th fixing axle by unidirectional ring, and on the 5th gear and the first limited block side The teeth engagement opened；One end that 5th fixing axle stretches out the 4th fixed plate is fitted with second bevel gear by key；5th Fixed plate lower end surface is fixedly mounted on the first accommodating chamber bottom surface；4th fixing axle is mounted on institute in the 5th fixed plate by bearing In the circular hole opened；First bevel gear one end is fixedly mounted in the 4th fixed axial end, and first bevel gear and second bevel gear Engagement；Two third fixed plate lower end surfaces are fixedly mounted on the first accommodating chamber bottom surface, and two third fixed plates are opposite The second guide groove is symmetrically provided on end face；Second guide block there are two being symmetrically installed on fixed square plate end face；Fixed square plate passes through second Guide block and the second guide groove are slidably installed between two third fixed plates；Reset spring is installed in second guide groove, it is multiple Position spring one end is fixedly mounted on the second guide groove end face, and the reset spring other end is fixedly mounted on the second guide block end face；The Three fixing axles are mounted in two third fixed plates by bearing；4th gear is mounted in third fixing axle by key, and the The teeth opened on four gears and fixed square plate side cooperate；The notch of perforation is provided on 4th gear face, and the present invention is set It is standby install after the perforation notch and fixed square plate side on the teeth opened cooperate；4th fixing axle and third fixing axle it Between linked together by third belt；Two the first trunnion lower end surfaces are symmetrically mounted on fixed square plate upper surface；Second limit Position block is mounted between two the first trunnions by straight pin, and the teeth on the downside of the second limited block and third rack gear cooperate；Limit Position leaf spring one end is fixedly mounted on the second limited block end face, and the limit leaf spring other end is fixedly mounted on fixed square plate end face, And limit leaf spring is distributed close to the first limited block.

5. the device that vehicle passes through within the scope of the specific width that a kind of municipal works according to claim 3 use, special Sign is: the supporting mechanism includes first connecting rod, the second telescopic rod, second connecting rod, the second trunnion, third connecting rod, third branch Ear, the 4th trunnion, the second trunnion of two of them are symmetrically mounted on the first movement plectane lower end surface；Two third trunnions are symmetrically pacified On the second movement plectane upper surface, and two third trunnions are located at immediately below two the second trunnions；Two above and below second connecting rod End face is symmetrically installed there are two the 4th trunnion；Second connecting rod is mounted on screw rod by the second telescopic rod, and second connecting rod with The cooperation of second trunnion；Second telescopic rod is located between two spring mounting plates；Second connecting rod upper end passes through the installed thereon By cylinder pin connection, the first connecting rod other end is connected by straight pin and two the second trunnions for four trunnions and first connecting rod one end It connects；Second connecting rod lower end passes through the 4th trunnion installed thereon and third connecting rod one end and passes through cylinder pin connection, third connecting rod The other end is connect by straight pin with two third trunnions.

6. vehicle passes through within the scope of the specific width used according to claim 4 or a kind of municipal works as claimed in claim 3 Device, it is characterised in that: second fixing axle and the screw rod in two limit for width column mechanisms pass through the first belt and the respectively Two belts link together.

7. vehicle passes through within the scope of the specific width used according to claim 4 or a kind of municipal works as claimed in claim 3 Device, it is characterised in that: the coefficient of elasticity of the energy-stored spring be less than return spring coefficient of elasticity.