CN210941678U

CN210941678U - Bus cab protection isolation safety door

Info

Publication number: CN210941678U
Application number: CN201921933842.7U
Authority: CN
Inventors: 张龙
Original assignee: Ningxia Jiuxing Yongtai New Energy Technology Co ltd
Current assignee: Ningxia Jiuxing Yongtai New Energy Technology Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-07
Anticipated expiration: 2029-11-11

Abstract

The utility model relates to a bus driver's cabin protection isolation emergency exit, enclose and the arc side wall behind the same arc of radian, enclose behind the arc and keep off including the first arc case of an open side and rigid coupling in the backstop of first arc case upper end, the arc side wall is including the second arc case of sliding joint in first arc incasement to and be located the side fender that the second arc incasement goes up and down through the drive arrangement drive. The utility model discloses can reduce the occupation space of emergency exit, prior art's emergency exit is along the pin joint upset, and the space that will occupy is a sectorial column region, and what occupy is the space in passenger district. And the utility model discloses the space that occupies is an arcwall face, does not occupy the space in passenger's district. When the passenger area of going to the bus of passenger district also stands full of people, the utility model discloses an emergency exit also can open fast, and the driver of being convenient for walks out the driver's seat fast and carries out emergency treatment. The passenger does not need to extrude space backwards, so that the passenger is prevented from being extruded and injured, and the personal safety of the passenger is improved.

Description

Bus cab protection isolation safety door

Technical Field

The utility model relates to a public transport facility field specifically indicates a safety door is kept apart in bus driver's cabin protection.

Background

The urban bus has the advantages of multiple stations, long lines, wide coverage, large passenger flow and high safety risk. In recent years, unsafe events caused by the intrusion of passengers on the behavior of drivers occur all over the country, and high social attention is paid. In order to ensure the safety of passengers and drivers and avoid contradictions between the passengers and the drivers, safety doors are gradually popularized on buses. Most of conventional security doors are opened outward from a driving seat.

However, as is well known, a seat area and a standing area are arranged on a bus, and although passengers are not suggested to stand in a boarding area of the bus, the passengers are often in a person-by-person manner in the bus with a busy route, and the boarding area of the bus can be full of passengers on the premise of not blocking the sight of a driver for observing a rearview mirror. In this case, once an emergency situation occurs, the driver needs to coordinate, and the disadvantage of the outward opening door safety door is reflected. Because the passenger area stands full of people, the safety door with the door opened outwards can be blocked, so that the safety door is difficult to be completely opened, a driver is prevented from coming out of a driving position, and the safety door is inconvenient to use in practice.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a bus driver's cabin protection isolation emergency exit, can reduce the occupation space of emergency exit, do not occupy the space in passenger's district for driver's reaction rate has been avoided the passenger to take place the extrusion injury accident.

The utility model discloses a through following technical scheme realizes, provide a bus driver's cabin protection isolation emergency exit, enclose and the arc side wall behind the same arc of radian, enclose the backstop including an open-sided first arc case and rigid coupling in first arc case upper end behind the arc, the arc side wall is including the second arc case of sliding joint in first arc incasement to and be located the side fender that the second arc incasement goes up and down through the drive arrangement drive.

Enclose behind the arc of this scheme and the arc side wall is after launching, work as promptly the utility model discloses an emergency exit closes the back, has constituted the radian and has enclosed the fender for the fourth of a circle, encloses the fender with driver and driving region to keep apart driving area and passenger district. First arc case sets up at the rear of driver's seat, and the bottom fixed mounting of first arc case is on the bottom surface of bus. Particularly, the bottom of first arc case is equipped with the ear seat of band-pass hole, and the position that bus bottom surface and ear seat correspond is equipped with the screw or pre-buried has the nut, wears to be equipped with the bolt on the ear seat, bolt and screw or nut threaded connection. Therefore, the first arc-shaped box is fixedly connected with the bottom surface of the bus, and in order to ensure that the first arc-shaped box is stably installed, the bolts and the lug seats are at least provided with 2-3 groups.

The rear baffle is fixedly connected to the upper part of the first arc-shaped box, and the radian of the rear baffle is the same as that of the first arc-shaped box. Particularly, the upper portion and the lower portion of the rear fender are fixedly connected with lug seats with through holes, the upper portion of the first arc-shaped box and the top surface of the bus are provided with screw holes or pre-embedded nuts corresponding to the lug seats, the lug seats are also provided with bolts in a penetrating mode, and the bolts are in threaded connection with the screw holes or the nuts. Thereby also realizing the fixed connection of first arc case and backstop through the bolt.

The second arc case is smaller than the first arc case by one circle, so that the first arc case can be sleeved on the second arc case, and when the second arc case slides into the first arc case, the second arc case is completely positioned in the first arc case. When the second arc-shaped box completely slides out of the first arc-shaped box, the radian formed by the second arc-shaped box and the first arc-shaped box is a quarter of a circle. And the bottom of the second arc-shaped box is not contacted with the bottom surface of the bus, namely the second arc-shaped box is extended out from the first arc-shaped box in a suspended state. The side block is positioned in the second arc-shaped box, the radian of the side block is the same as that of the second arc-shaped box, the upper part of the second arc-shaped box is provided with a through groove which is the same as the side block in appearance, and the side block can be lifted from the second arc-shaped box through the through groove under the driving of the driving device.

Preferably, the inner walls of the upper end and the lower end of the first arc-shaped box are fixedly connected with arc-shaped guide rails with the same radian as the second arc-shaped box, and the second arc-shaped box is fixedly connected with pulleys which are matched with the arc-shaped guide rails and are positioned in the first arc-shaped box. The radian of the arc guide rail and the second arc case of this scheme is the same, pulley and arc guide rail are corollary equipment, the pulley can follow arc guide rail steady slip, roll-off from first arc incasement when second arc case, when constituting the radian of quarter circle, second arc case and first arc case possess one section of coincidence, second arc case has one section to be located first arc incasement promptly, the pulley is just installed on this section of second arc case, because on the second arc case, the lower extreme all is equipped with the pulley, be promptly on the second arc case, the lower extreme all with second arc case sliding connection, it is more steady to make second arc case slide in first arc incasement.

Preferably, the arc-shaped guide rail comprises a strip-shaped convex block and a stop block fixedly connected to one end, close to the opening of the first arc-shaped box, of the strip-shaped convex block, the pulley comprises two wheel bodies which are axially connected to the second arc-shaped box and have cross sections in the shape of a convex character, one side, close to the second arc-shaped box, of each wheel body is a large-diameter end, one side, far away from the second arc-shaped box, of each wheel body is a small-diameter end, and the strip-shaped convex block is located between the small-diameter. Two wheel body homoenergetic of the pulley of this scheme independently rotate, the wheel body forms in other words a path cylinder and the coaxial rigid coupling of a big footpath cylinder, the bar lug is cliied to the minor diameter end of two wheel bodies, the big diameter end of two wheel bodies all bears an arm on bar lug's up end, particularly, just detain the bar lug that corresponds through two wheel bodies, the position of second arc case in first arc incasement has been injectd on the one hand, on the other hand when second arc case slides in first arc incasement, the wheel body independently rotates, the friction between arc guide rail and the pulley has been reduced, the wearing and tearing of arc guide rail and pulley have been slowed down.

Preferably, the side shield is made of toughened glass, the driving device is a hand-operated glass lifter, a crank of the hand-operated glass lifter is located on one side, close to the driving position, of the second arc-shaped box, and a notch matched with the position of the crank is formed in the first arc-shaped box. The hand glass-frame riser of this scheme is current mature technique, through rotating the crank, makes hand glass-frame riser drive the side and keeps off from the second arc incasement and rise or descend, and the principle is the same with the hand glass of old money car. The side keeps off and adopts toughened glass, and intensity is high on the one hand, and the security is secure, and on the other hand when the side keeps off and explodes under extreme condition, toughened glass can smash into even tiny particle under the condition of not pasting explosion-proof glass membrane, can not cause the injury to passenger and driver. The driving device adopts a hand-operated glass lifter, can be opened in the states of accidents and power failure of the whole vehicle, and has stronger reliability compared with an electric glass lifter. Through set up the opening groove with crank position adaptation on first arc case, make second arc case when sliding into first arc incasement, the crank can slide into first arc incasement along the opening groove, has avoided when the crank is too big, keeps off the second arc case the condition emergence outside first arc case.

As optimization, the up end rigid coupling of second arc case a plurality of rotary counter that correspond the bus stop name, rotary counter is located the side and keeps off the outside, and rotary counter's knob towards passenger's district of getting on the bus, set up the recess with rotary counter position adaptation on the first arc case. The rotary counter of the scheme is the same as a counter on a common counting skipping rope, when the knob rotates for one circle, a number is added, the rotary counter is provided with a reset key, and when the reset key is pressed, the number display returns to zero. When a passenger gets on the bus, the rotary counter corresponding to the arriving station can be rotated, the number of the passenger is counted through the rotary counter, on one hand, the driver can prompt the passenger to move to the rear door in advance to prepare to get off according to the number of the rotary counter, so that the situation that the passenger pushes the bus from the front to the rear after arriving at the station is avoided, the time of getting off the bus is saved, and the operation efficiency of the bus is improved. On the other hand, the method is convenient for the public transport company to count the passenger flow and provide data reference for planning the public transport route later. When the bus arrives at the terminal station, the rotary counter is reset to zero through the reset key, and the counting of a new round is facilitated. Through set up on first arc case with the recess of rotary counter position adaptation, make second arc case when sliding into first arc incasement, the rotary counter slides into first arc incasement along the recess, has avoided when rotary counter's volume is too big, keeps off the second arc case the condition emergence outside first arc incasement.

Preferably, the side baffle is provided with a plurality of through holes. The through hole of the scheme is communicated with the driving area and the passenger area, so that the driver and the passenger can converse through the through hole, and the passenger can conveniently inform the driver of a special request.

Preferably, the rear bumper is an electronic screen. The electronic screen of the scheme is used as a rear bumper, so that the driving position is blocked, warning slogans which do not disturb drivers can be played in a rolling mode in a passenger area, and videos such as public service advertisements can be played. Plays a certain public welfare propaganda role.

Preferably, one side of the rear baffle is fixedly connected with an L-shaped guide strip, and one side of the guide strip, which is close to the side baffle, is provided with a strip-shaped groove adaptive to the thickness of the side baffle. When the side fender rises from the second arc case, can upwards slide along the bar groove of gib block, the upper portion of final side fender also can insert the bar inslot of gib block, plays the guide effect to the side fender through gib block one side, has prevented that the side fender from taking place the skew, and on the other hand can inject the upper portion of side fender when the side fender rises the back, makes the side fender more firm.

The utility model has the advantages that: the utility model discloses can reduce the occupation space of emergency exit, the utility model discloses an emergency exit and current emergency exit contrast, prior art's emergency exit is along the pin joint upset, and the space that will occupy is a sectorial column region, and what occupy is the space in passenger district. And the utility model discloses an emergency exit adopts the gliding mode of push-and-pull, and the space that occupies is an arcwall face, does not occupy the space in passenger's district. When the passenger district of going up of passenger district also stands full of people, the utility model discloses an emergency exit also can open fast, and the driver of being convenient for walks out the driver seat fast and carries out emergency treatment for driver's reaction rate. And need not the passenger and extrude the space backward, avoided the passenger to take place the extrusion injury accident, improved passenger's personal safety.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a view taken along direction A of FIG. 1;

shown in the figure:

1. enclose behind the arc, 11, first arc case, 12, backstop, 2, arc side wall, 21, second arc case, 22, side fender, 3, arc guide rail, 4, pulley, 5, revolution counter, 6, gib block, 7, driver's seat, 8, gear.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

The utility model provides a bus driver's cabin protection isolation emergency exit, as shown in the figure, enclose 1 and arc side wall 2 behind the same arc of radian, enclose 1 behind the arc and include one side open-ended first arc case 11 and rigid coupling back shield 12 in first arc case 11 upper end, arc side wall 2 is including the second arc case 21 of sliding joint in first arc case 11 to and be located the side shield 22 that second arc case 21 is gone up and down through the drive arrangement drive.

The upper and lower end inner walls of the first arc-shaped box 11 are fixedly connected with arc-shaped guide rails 3 with the same radian as the second arc-shaped box 21, and the second arc-shaped box 21 is fixedly connected with pulleys 4 which are matched with the arc-shaped guide rails 3 and are positioned in the first arc-shaped box 11. The arc-shaped guide rail 3 comprises a strip-shaped convex block and a stop block fixedly connected to the strip-shaped convex block and close to one end of an opening of the first arc-shaped box 11, the pulley 4 comprises two wheel bodies which are axially connected to the second arc-shaped box 21 and have cross sections in the shape of a convex character, one side of each wheel body close to the second arc-shaped box 21 is a large-diameter end, one side of each wheel body far away from the second arc-shaped box 21 is a small-diameter end, and the strip-shaped convex block is located between the small-diameter ends.

The side shield 22 is toughened glass, the driving device is a hand-operated glass lifter, a crank of the hand-operated glass lifter is positioned on one side of the second arc-shaped box 21 close to the driving position 7, and a notch matched with the position of the crank is formed in the first arc-shaped box 11.

The up end rigid coupling of second arc case 21 is a plurality of rotary counter 5 that correspond the bus stop name, and rotary counter 5 is located the side and keeps off 22 the outside, and rotary counter 5's knob is towards passenger's district of getting on the bus, offers the recess with rotary counter 5 position adaptation on the first arc case 11.

One side rigid coupling L type gib block 6 of backstop 12, gib block 6 is close to the side and is kept off 22 one side and is equipped with the strip groove of 22 thickness adaptations of side.

Enclose 1 and arc side wall 2 after the arc and after expanding, work as promptly the utility model discloses an emergency exit closes the back, has constituted the radian and has enclosed the fender for the quarter circle, encloses the fender with driver and driving region to keep apart driving area and passenger area. First arc case 11 sets up in the rear of driver's seat, and the bottom fixed mounting of first arc case 11 is on the bottom surface of bus. Particularly, the bottom of first arc case 11 is equipped with the ear seat of taking the through-hole, and the position that bus bottom surface and ear seat correspond is equipped with the screw or pre-buried has the nut, wears to be equipped with the bolt on the ear seat, bolt and screw or nut threaded connection. Thereby realize the fixed connection of first arc case 11 and bus bottom surface, for guaranteeing that first arc case 11 installation is firm, bolt and ear seat set up 2-3 groups at least.

The rear baffle 12 is fixedly connected to the upper part of the first arc-shaped box 11, and the radian of the rear baffle 12 is the same as that of the first arc-shaped box 11. Particularly, the upper and lower part of back fenders 12 all rigid coupling have the ear seat of through-hole, and the upper portion of first arc case 11 and the top surface of bus all are equipped with the screw that corresponds the ear seat position or pre-buried have the nut, also wear to be equipped with the bolt on the ear seat, bolt and screw or nut threaded connection. So that the fixed connection of the first curved box 11 and the back stop 12 is also achieved by means of bolts.

The second arc case 21 is smaller than the first arc case 11 by one turn, the first arc case 11 can cover the second arc case 21, and when the second arc case 21 slides into the first arc case 11, the second arc case 21 is completely positioned in the first arc case 11. When the second curved box 21 is completely slid out of the first curved box 11, the second curved box 21 and the first curved box 11 form an arc of a quarter circle. And the bottom of the second arc-shaped box 21 is not contacted with the bottom surface of the bus, namely the second arc-shaped box 21 extends out of the first arc-shaped box 11 in a suspended state. The side block 22 is positioned in the second arc-shaped box 21, the radian of the side block 22 is the same as that of the second arc-shaped box 21, a through groove with the same shape as that of the side block 22 is formed in the upper part of the second arc-shaped box 21, and the side block 22 can be lifted from the second arc-shaped box 21 through the through groove under the driving of the driving device. The second arc-shaped box 21 is provided with a door lock, and the door lock is the prior art and is not described in detail in the embodiment.

Arc guide rail 3 is the same with the radian of second arc case 21, pulley 4 and arc guide rail 3 are corollary equipment, pulley 4 can follow arc guide rail 3 steady slip, roll-off in second arc case 21 follow first arc case 11, during the radian of component quarter circle, second arc case 21 and first arc case 11 possess one section of coincidence, second arc case 21 has one section to be located first arc case 11 promptly, pulley 4 just installs on this one section of second arc case 21, because on second arc case 21, the lower extreme all is equipped with pulley 4, be promptly on second arc case 21, the lower extreme all with second arc case 21 sliding connection, it is more steady to make second arc case 21 slide in first arc case 11.

Two wheel bodies homoenergetic of pulley 4 independently rotate, the wheel body forms in a small diameter cylinder and the coaxial rigid coupling of a big footpath cylinder in other words, the bar lug is cliied to the little footpath end of two wheel bodies, the big footpath end of two wheel bodies all is born an arm on bar lug's up end, particularly, just detain the bar lug that corresponds through two wheel bodies, the position of second arc case 21 in first arc case 11 has been injectd on the one hand, on the other hand when second arc case 21 slides in first arc case 11, the wheel body independently rotates, the friction between arc guide rail 3 and pulley 4 has been reduced, the wearing and tearing of arc guide rail 3 and pulley 4 have been slowed down. When the pulley 4 slides to the outer end of the arc-shaped guide rail 3, the pulley can be blocked by the stop block, so that the pulley 4 is prevented from derailing from the arc-shaped guide rail 3.

Hand glass-frame riser is current mature technique, through rotating the crank, makes hand glass-frame riser drive side shield 22 rise or descend from in the second arc case 21, and the principle is the same with the hand glass of old money car, no longer explains in this embodiment. The side shield 22 is made of toughened glass, so that the strength is high, and the safety is guaranteed, and when the side shield 2 bursts under extreme conditions, the toughened glass can be crushed into uniform small particles without being attached with an explosion-proof glass film, so that passengers and drivers cannot be injured. The driving device adopts a hand-operated glass lifter, can be opened in the states of accidents and power failure of the whole vehicle, and has stronger reliability compared with an electric glass lifter. Through set up the opening groove with crank position adaptation on first arc case 11, make second arc case 21 when sliding in first arc case 11, the crank can slide in first arc case 11 along the opening groove, has avoided when the crank is too big, keeps off the second arc case 21 the condition emergence outside first arc case 11.

The rotary counter 5 is the same as a common counter on a counting skipping rope, and is not repeated in the embodiment, when the knob rotates for a circle, a number is added, the rotary counter 5 is provided with a reset key, and when the reset key is pressed, the number display returns to zero. When a passenger gets on the bus, the rotary counter 5 corresponding to the arriving station can be rotated, the number of the passenger is counted through the rotary counter 5, on one hand, a driver can prompt the passenger to move to the rear door in advance to get off in time according to the number of the rotary counter 5, so that the situation that the passenger pushes the bus from the front to the rear after arriving at the station is avoided, the time of getting off the bus is saved, and the operation efficiency of the bus is improved. On the other hand, the method is convenient for the public transport company to count the passenger flow and provide data reference for planning the public transport route later. When the bus arrives at the terminal, the rotary counter 5 is reset to zero through the reset key, so that the new round of statistics is facilitated. Through set up on first arc case 11 with the recess of 5 position adaptations of rotary counter, make second arc case 21 when sliding into first arc case 11, rotary counter 5 slides into first arc case 11 along the recess in, avoided when rotary counter 5's volume is too big, keeping off the condition emergence outside first arc case 11 with second arc case 21.

When the side block 22 rises from the second arc-shaped box 21, the side block 22 can slide upwards along the strip-shaped groove of the guide strip 6, finally, the upper part of the side block 22 can also be inserted into the strip-shaped groove of the guide strip 6, the guide strip 6 plays a role in guiding the side block 22 on one hand, the side block 22 is prevented from deviating, and on the other hand, after the side block 22 rises, the upper part of the side block 22 can be limited, so that the side block 22 is firmer.

As an optimized scheme, a plurality of through holes are formed in the side baffle 22. The through hole of the optimization scheme is communicated with the driving area and the passenger area, so that the driver and the passenger can converse through the through hole, and the passenger can conveniently inform the driver of a special request.

As an optimized solution, the rear bumper 12 is an electronic screen. The electronic screen of the optimized scheme is used as a rear baffle 12, can roll and play warning slogans which do not disturb drivers to passenger areas while blocking the driving positions 7, and can also play videos such as public service advertisements. Plays a certain public welfare propaganda role.

When using, the driver pulls out second arc case 21 from first arc case 11 from the driver's seat, and second arc case 21 drives two sets of pulleys 4 and outwards slides along corresponding arc guide rail 3 simultaneously, makes second arc case 21 follow the interior roll-off of first arc case 11. Be provided with the lock on the second arc case 21, the lock is prior art, and no longer gives details in this embodiment, contacts the back when the position of second arc case 21 and well accuse platform, through lock locking second arc case 21. Then rotate the crank, rise through the hand glass-frame riser of crank control, hand glass-frame riser drives side fender 22 and rises from second arc case 21, side fender 22 upwards slides along the bar groove of gib block 6 when rising, and finally the upper portion of side fender 22 also can insert the bar inslot of gib block 6, plays the guide effect to side fender 22 through gib block 6 one side, has prevented that side fender 22 from taking place the skew, and on the other hand can inject the upper portion of side fender 22 when the side fender 22 rises the back, makes side fender 22 more firm. After the above-mentioned step, can with the utility model discloses an emergency exit is closed, has played the effect of keeping apart driver and passenger, has avoided driver and passenger's conversation to lead to driver's distraction on the one hand, and on the other hand has avoided driver and passenger to take place the contradiction, has guaranteed bus driver and passenger's safety.

When a passenger gets on the bus, the rotary counter 5 corresponding to the arriving station can be rotated, the number of the passenger is counted through the rotary counter 5, on one hand, a driver can prompt the passenger to move to the rear door in advance to get off in time according to the number of the rotary counter 5, so that the situation that the passenger pushes the bus from the front to the rear after arriving at the station is avoided, the time of getting off the bus is saved, and the operation efficiency of the bus is improved. On the other hand, the method is convenient for the public transport company to count the passenger flow and provide data reference for planning the public transport route later. When the bus arrives at the terminal, the rotary counter 5 is reset to zero through the reset key, so that the new round of statistics is facilitated.

The utility model discloses can reduce the occupation space of emergency exit, the utility model discloses an emergency exit and current emergency exit contrast, prior art's emergency exit is along the pin joint upset, and the space that will occupy is a sectorial column region, and what occupy is the space in passenger district. And the utility model discloses an emergency exit adopts the gliding mode of push-and-pull, and the space that occupies is an arcwall face, does not occupy the space in passenger's district. When the passenger district of going up of passenger district also stands full of people, the utility model discloses an emergency exit also can open fast, and the driver of being convenient for walks out the driver seat fast and carries out emergency treatment for driver's reaction rate. And need not the passenger backward and extrude the space, avoided the passenger to take place the injury accident that the extrusion was trampled, improved passenger's personal safety.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a bus driver's cabin protection isolation emergency exit which characterized in that: enclose (1) and arc side wall (2) behind the same arc of radian, enclose (1) behind the arc and include one side open-ended first arc case (11) and rigid coupling backstop (12) in first arc case (11) upper end, arc side wall (2) are including sliding connection second arc case (21) in first arc case (11) to and be located side fender (22) that second arc case (21) are gone up and down through the drive arrangement drive.

2. The bus cab protective isolation safety door according to claim 1, characterized in that: the upper and lower end inner walls of the first arc-shaped box (11) are fixedly connected with arc-shaped guide rails (3) which are identical to the radian of the second arc-shaped box (21), and the second arc-shaped box (21) is fixedly connected with pulleys (4) which are matched with the arc-shaped guide rails (3) and are positioned in the first arc-shaped box (11).

3. The bus cab protective isolation safety door according to claim 2, characterized in that: arc guide rail (3) include the bar lug to and the dog of rigid coupling at the bar lug and be close to first arc case (11) opening one end, pulley (4) are two wheel bodies of type including the cross-section of hub connection on second arc case (21), one side that the wheel body is close to second arc case (21) is big diameter end, keeps away from second arc case (21) is little diameter end, the bar lug is located between the minor diameter end that corresponds two pulleys.

4. The bus cab protective isolation safety door according to claim 1, characterized in that: side fender (22) are toughened glass, and drive arrangement is hand glass riser, hand glass riser's crank is located one side that second arc case (21) are close to driving position (7), offers the groove of opening with crank position adaptation on first arc case (11).

5. The bus cab protective isolation safety door according to claim 1, characterized in that: the up end rigid coupling of second arc case (21) is a plurality of rotary counter (5) that correspond the bus stop name, rotary counter (5) are located the side and keep off (22) the outside, and the knob of rotary counter (5) is towards passenger's district of going to the bus, set up the recess with rotary counter (5) position adaptation on first arc case (11).

6. The bus cab protective isolation safety door according to claim 1, characterized in that: the side block (22) is provided with a plurality of through holes.

7. The bus cab protective isolation safety door according to claim 1, characterized in that: the rear bumper (12) is an electronic screen.

8. The bus cab protective isolation safety door according to claim 1, characterized in that: one side rigid coupling L type gib block (6) of back fender (12), gib block (6) are close to the one side of side fender (22) and are equipped with the strip groove with side fender (22) thickness adaptation.