KR100775292B1 - Apparatus for preventing clash between bascule guide and transport car - Google Patents

Abstract

The present invention relates to a device for protecting a CDQ (Bascule guide), more specifically, the transport vehicle (7) carrying the cooling chamber 17 enters the chamber 17 up and down It relates to a cab guide and a collision avoidance device 100 of a transport vehicle configured not to collide with the cab guide 5 rotatably installed in the lower portion of the guiding guide (14).

Barbecue Guide, Transport Vehicle, Magnet, Chamber, Bucket

Description

Anti-collision device of cab clad guide and transport vehicle {APPARATUS FOR PREVENTING CLASH BETWEEN BASCULE GUIDE AND TRANSPORT CAR}

1 is a schematic diagram of a work in which a bucket transferred to a conventional transport vehicle is transferred to a chamber by a guideway;

Figure 2 is a schematic diagram of the operation of installing the stopper directly by the worker to prevent the collision between the conventional guide and the vehicle guide;

3 is a layout view of the collision prevention device of the vehicle guide and the vehicle guide according to the present invention;

4 is a perspective view of an anti-collision device of a vehicle guide and a vehicle guide according to the present invention;

5 is an exploded perspective view of an anti-collision device of a vehicle guide and a vehicle guide according to the present invention;

6 is an exploded perspective view of a fastening part of an anti-collision device according to the present invention;

7 is a first operation of the collision avoidance device according to the present invention;

8 is a second operation of the collision avoidance device according to the present invention;

9 is an installation of the sensors and the magnet of the control unit in the collision avoidance apparatus according to the present invention; And

10 is a schematic configuration diagram of a control unit of an anti-collision device according to the present invention.

Explanation of symbols on the main parts of the drawings

 1 .... Chamber 2 .... Crane                 

 5 .... Bass Guide 7 .... Transport

11 .... Adjustment beam 12 .... Pusher

14 .... Guide rail 19 .... Stopper

20 .... Balance 22 .... Wheels

24 .... First Rack Gear 25 .... Middle Gear Roll

27 .... Roller 28 .... 2nd Rack Gear

29 .... spring 31 .... mounting plate

40 .... Clamp 41 .... Block

42 .... Third Rack Gear 45 .... Tightening

46 .... Pressing bar 47 .... Spring

48 .... pulling rope 50 .... fastening

59 .... roller 61 .... motor

72 .... Two-stage gear 75 .... Screw shaft

76 .... Magnet 77 .... Support

90 .... Control unit 91 .... Second detection sensor

92 .... 3rd sensor 96 .... 1st sensor

100 .... Collision preventing device of the vehicle guide and the vehicle guide according to the present invention

The present invention relates to a protective device for the CDQ (Bascule guide), and more particularly, a transport vehicle carrying a cooling chamber to enter the rotatable lower portion of the guide path for guiding the chamber up and down The present invention relates to an anti-collision device of a vehicle guide and a vehicle configured to not collide with the installed guide.

FIG. 1 schematically shows the operation of the bucket 17 carried by the conventional transport vehicle to the chamber 1 by way of the guideway 14, and FIG. 2 shows the conventional cab clasp guide 5 and the transport vehicle 7 The operation of installing the stopper 19 directly by the worker is schematically shown so as to prevent the collision of).

Referring to FIGS. 1 and 2, a COKE DRY QUENCH-ING facility of a coke plant is generally charged into a furnace called CHAMBER 1 instead of working to extinguish red coke using water. To extinguish in nitrogen gas (GAS) atmosphere. At this time, the bucket 17 is lifted by using the crane 2 to charge the red coke to the chamber 1, and the bucket 17 is moved up and down on the guide rail 14. BASCULE GUIDE (5) rotatable by the drive motor (8) is installed at the lower end of the guide rail (14), which is to enter both sides when the carriage (7) for transporting the bucket (17). The collision with the transport vehicle 7 is prevented.

However, since the base guide 5 is fixed only to the motor 8 and the shaft, in the strong windy weather, the bucket 17 which is moved up and down by the guide rail 14 is easily flowed. Since the crane wire 4 flows even while the crane 2 that transfers the bucket 17 moves, the bucket 17 frequently moves during the transfer. When the degree of flow phenomenon of the bucket 17 becomes very severe, there is a risk that the bucket 17 falls, so the work is stopped until the flow stops.

In addition, when the transport vehicle 7 is in standby, a preliminary transport vehicle carrying another bucket 17 continues to be pushed in, and the transport vehicle 7 located in front of the swash guide 5 is inadvertently pushed in by a worker. There is a case that the vehicle is pushed into the sack guide 5 without notice due to a collision with the sack guide 15 frequently caused a personal accident and damage to the peripheral equipment.

In order to solve the above problems, conventionally, the operator arranges the stopper 19 made of rubber or the like directly on the running portion of the transport vehicle 7, thereby inadvertently causing the operator to take care of the bass guide 5 of the transport vehicle 7. Prevented entry. However, this method requires the operator to place the stopper 19 directly in front of the transport vehicle 7 and remove it again, since there is always a risk of being hit by the transport vehicle 7 and causing a safety accident during this manual operation. There is a problem that the incidence of industrial accidents increases.

The present invention has been proposed in order to solve the conventional problems as described above, so that even when there is a strong wind, the bucket is always raised and lowered safely so that there is no operation interruption, and the guide rail of the guide rail is not collided by a transport vehicle that proceeds without notice. Therefore, the object of the present invention is to provide an anti-collision device of a vehicle guide and a vehicle guide to prevent damage to surrounding equipment and workers' industrial accidents.

The present invention as a technical configuration for achieving the above object, in the apparatus for preventing a collision between the bucket loading transport vehicle and the sack guide guide rotated to the lower portion of the guide rail for shanghai east of the bucket, Adjustment beams mounted on guides and extending laterally and mounted on one end; A trolley having a roller pushed forward by the push rod and a first rack gear engaged with the intermediate gear roll for rotational force transmission at the upper side thereof, and a second rack gear mounted at the rear thereof and elastically supported by a rearwardly arranged spring; The third rack gear meshing with the intermediate gear roll is installed on the side and the block is connected to the third rack gear lifting rope that is installed in front of the fastening portion for holding the adjusting beam and pulled by the motor drive to the rear. Clamp unit; And a magnet that is moved up and down between rails so as to be spaced apart from two-stage gears meshing with the second rack gear and disposed at an upper end of a chain-driven driven screw center screw shaft to transfer a stop signal to a first detection sensor mounted on the vehicle. Including a control unit having, by providing an anti-collision device of the vehicle guide and the vehicle guide to control the operation of the vehicle to the sack guide.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

3 is a layout view of the collision guide device 100 (hereinafter, referred to as collision avoidance device 100) of the vehicle guide and the vehicle according to the present invention, Figure 4 is a perspective view of the collision avoidance device 100 according to the present invention 5 is an exploded perspective view of the collision avoidance device 100 according to the present invention, and FIG. 6 is an exploded perspective view of the clamping part 50 of the collision avoidance device 100 according to the present invention.

3 to 6, the collision avoidance device 100 according to the present invention is installed on two platforms 105 which are dug on the side of the guide rail 14, respectively. Each of the platforms 105 is a groove cut into a square shape and has a flat bottom surface.

The anti-collision apparatus 100 according to the present invention is largely mounted to the sack guides 5 and pushed by the adjustment beams 11 and the adjustment beams 11 extending laterally, for transmitting the rotational force to the upper side. A first rack gear 24 engaged with the intermediate gear roll 25 and a second rack gear 28 mounted to the rear, and the bogie 20 is elastically supported by the rear-positioned spring 29, the intermediate gear The third rack gear 42 meshing with the roll 25 is installed to move to the side and the fastening part 50 for holding the adjusting beam 11 is installed in the front and the rear of the motor 61 is pulled by the drive. Clamp portion 40 having a block 41 connected to the third rack gear pulling rope 48 and driven gear 71 spaced apart and chained with a second gear 72 engaged with the second rack gear 28. And a control unit 90 having a magnet 76 disposed at an upper end of the central screw shaft 75 and lifting up and down between the rails.

Looking at the configuration of the anti-collision device 100 according to the present invention in more detail, the adjustment beams 11 are respectively mounted to the sack guides (5) H-beams extending laterally, the first end of each The push rod 12 is mounted. The adjusting beams 11 are in the shape of 'a' and each extends toward the flats 105, so that the push rods 12 also face the flats 105, respectively.

The trolley 20 is attached to the push rod 12 mounted to the adjusting beams 11 so that the sack guides 5 can be rotated by the motor 8 and pushed by the rotational force when the lowering is performed. A roller 27 to be pushed is mounted at the front, and the roller 27 is connected to the pin 27 at the end of the connecting bar 26 extending forward of the trolley 20.

In addition, the second rack gear 28 is mounted to the end of the connecting bar (29a) extending to the rear of the trolley 20, the spring 29 is the second rack gear at the rear of the trolley (20) 28) It is supported by a fixed plate 31 fixed to the front, so that the trolley 20 is always elastically supported by the spring (29). At this time, since the hole 31a through which the connecting bar 29a penetrates is formed in the fixing plate 31, the spring 29 is supported by the fixing plate 31 while being protruded around the connecting bar 29a. .

On the other hand, the first rack gear 24 is engaged with the cylindrical intermediate gear roll 25 disposed on the upper side, the intermediate gear roll 25 is a support 32 fixed to both sides of the trolley 20 It is formed integrally with the connecting table (25a) connected to be rotated to the axis.

The clamping part 50 of the clamp part 40 clamps and fixes the adjusting beams 11 so that the buckets 17 are stable along the guide rail 14 fixed by the fastening part 50. As installed so as to be able to move up and down smoothly, connecting the pin 45a at both ends of the 'c'-shaped support 44 mounted at the end of the connection bar 43 extending forward of the block 41 and the support 44. And pins 45b coupled to each other, a pusher 46 mounted in front of the fasteners 45, and connected between the support 44 and the backs of the fasteners 45; It is configured to include a spring 47 for supporting the elastic 45.

Each of the third rack gears 42 on both sides of the clamp portion 40 is engaged with the intermediate gear roll 25 to have a traveling direction opposite to the forward and backward movement of the trolley 20, and is not shown on the inner side. Since the protrusions are formed, and the protrusions are inserted into the groove 41a vertically formed laterally to the side of the block 41, the third rack gears 42 are formed at both sides of the block 41. It is moved along the groove 41a.

In addition, a spring 58 connected to the pin 58a mounted on the side of the block 41 is inserted and mounted at an upper side of the third rack gear 42, and an upper center portion of the third rack gear 42 is inserted into the spring 58. It is connected to the rope 57 wound on the side of the roller (57a) installed to be rotated on the block 41 side, one end of the rope 57 is formed in the intermediate plate 54 disposed behind the block 41 It is connected to the connecting rod 56 penetrating the hole, one end of the connecting rod 56 is elastically supported by a spring (49a) to a fixed support 55 fixed to the rear support plate connected to the pulling rope 48 at the rear ( 49). According to this configuration, the third rack gears 42 are moved up and down along the grooves 41a by the pulling adjustment of the pulling rope 48 to adjust the engagement with the intermediate gear roll 25. .

In addition, the trolley 20 has four running wheels 22 installed on the lower side, and the guide rail 23 for guiding the wheels 22 only within a predetermined section around the wheels 22. This is installed. In addition, a guide rail 52 is installed on the upper portion of the trolley 20, and a guide rail 41b is installed on an upper side of the trolley 20, and the guide rail 52 is provided on the guide rail 41b. Guide wheels 53 running along the rotation are coupled to rotate.

In this way, the wheels 22 and 53 are guided along the guide rails 23 and 52 having only a certain section, respectively, so that excessive front and rear travel of the trolley 20 is prevented in advance.

The pulling rope 48 is wound around the roller 59 provided at the rear, and the central axis of the roller 59 is connected to the motor 61 provided at the side. The second rack gear 28 meshes with the gear 72a disposed on the upper side of the two-stage gear 72, and the lower gear 72b of the two-stage gear 72 is chained with the driven gear 71. When the second rack gear 28 is moved forward and backward according to the forward and backward movement of the trolley 20, the second rack gear 28 of the second rack gear 28 is connected to the upper surface of the second rack gear 28. The linear motion is converted to the rotational motion of the driven gear 71 through the rotation of the chain 73.

The control unit 90 includes a first detection sensor 96 mounted on the vehicle 7 in addition to the magnet 76 to receive a signal of the magnet 76. Accordingly, since the magnet 76 is normally disposed to rise above the rail 9, the magnet 76 stops at the first detection sensor 96 mounted on the transport vehicle 7 entering the cab clad guide 5. When the signal is transmitted, the first detection sensor 96 immediately sends a stop signal to the drive unit of the transport vehicle 7 so that the transport vehicle 7 no longer enters the swash guide 5.

In addition, support members 77 are installed below the rail 9 to allow the magnet 76 to smoothly move up and down. The supporters 77 have guide grooves (not shown) formed up and down on an inner side thereof, and the support grooves 83 are provided on the guide grooves which are lifted up and down along the guide grooves while the magnets 76 are mounted on the upper sides thereof. The guide plate 85 having a female threaded hole formed at the center thereof is mounted to the lower portion of the support plate 83 while being screwed according to the rotation of the screw shaft 75 to move up and down along the screw shaft 75.

In addition, the support (77) in front of the guide path (77a) is formed up and down, and the guide plate (77a) is fixed to the fixing piece 82 fixed to the lower side and the spring 78 is connected to the support plate (83) The flow piece 81 attached to the front surface of the support plate 83 is inserted to support the elasticity.

On the other hand, the control unit 90 has a second detection sensor 91 mounted on the magnet 76 and the third detection sensor 92 mounted in front of the motor 61, the detection sensors 91 (92) (96) and the control panel (94) connected to the magnet 76 and the swivel guide rotation motor (8), the control panel 94 is a magnet 76 in accordance with the approach to the vehicle (7) On the basis of the signal of) the rotation of the base guide 5 is automatically controlled.

Hereinafter, the operation of the collision avoidance device 100 according to the present invention will be described with reference to the drawings.

7 is a first operation of the collision avoidance device 100 according to the present invention, Figure 8 is a second operation of the collision avoidance device 100 according to the present invention. In addition, Figure 9 is an installation of the sensors and the magnet of the control unit 90 in the collision avoidance device 100 according to the present invention, Figure 10 is a schematic diagram of the control unit 90 of the collision avoidance device 100 according to the present invention. It is a block diagram.

First, referring to FIG. 7, the bark guides 5 are arranged in a straight line along the guide rail 14, and the adjustment beams mounted on the sides of the bark guides 5 are illustrated. 11) is toward the platform 105, the push rod 12 mounted at each end of the adjustment beams 11 is in contact with the roller 27 installed in front of the trolley 20 in contact with the pushing.

Looking at the process leading to Figure 7, the sack guides (5) is lowered so that the push rod 12 pushes the roller 27, the trolley 20 is pushed in the state of Figure 8, The first rack gear 24 is rotated in engagement with the intermediate gear roll 25.

When the trolley 20 is retracted, the second rack gear 28 is retracted, whereby the gear 72a of the double gear 72 is meshed and rotated, followed by the chain 73 rotation. The driven gear 71 is rotated, and then the screw shaft 75 is rotated.

When the screw shaft 75 is rotated, the guide piece 85 is raised along the screw shaft 75, so that the magnet 76 is upwardly arranged above the rail (9).

The trolley 20 is retracted to compress the spring 29 to the fixed plate 31, and thus the trolley 20 is pressed in a state receiving elastic energy of the spring 29.

In addition, when the cart 20 is reversed, the intermediate gear roll 25 is rotated, and the intermediate gear roll 25 is engaged with the third rack gear 42 to be rotated to rotate the third rack gear 42. ) Is advanced. When the fastening part 50 is advanced by the advancing of the third rack gear 42 and the pressing stand 46 of the fastening part 50 is pressed by the adjusting beam 11, the fastening parts 45 are It is folded to fix the adjusting beam (11).

Meanwhile, referring to FIG. 9, under the usual conditions, the transport vehicle 7 enters the bucket guide 5 with the bucket 17 mounted thereon. When entering the sack guide 5, the first detection sensor 96 mounted on the lower side of the trolley 20 receives a signal from the magnet 76, the signal shown in FIG. It is delivered to panel 94. As soon as the control panel 94 receives the first detection sensor 96, the control panel 94 stops the driving vehicle 6 that advances the transport vehicle 7. In addition, the second detection sensor 91 senses the approach of the vehicle 7 and transmits a signal to the control panel 94, the control panel 94 is based on this signal the motor shown in FIG. (8) is actuated, and the sack guides 5 are rotated in a direction away from each other.

When the swivel guides 5 are rotated upward, the push rod 12 held in contact with the roller 27 is also rotated upward so that the fasteners 45 of the fastening part 50 are adjusted to the adjustment beam 11. Then, the pressed state of the roller 27 is released.

Since the trolley | bogie 20 was pressed by the push rod 12 and the spring 29 was compressed with respect to the said support stand 31, it is moved forward again by the elasticity of the said spring 29, and the said 2nd The rack gear 28 also moves forward to rotate the gear 72a of the second gear 72.

When the second rack gear 28 moves forward, the third detection sensor 92 connected to the motor 61 transmits a signal according to the distance from the second rack gear 28 to the control panel 94. The motor 61 is operated.

When the motor 61 is operated, the roller 59 is rotated to pull the pulling rope 48 and thus the support plate 49 is pulled and the connecting rod 56 is pulled as a result. The rope 57 connected to the connecting rod 56 is pulled to raise the third rack gear 42.

When the third rack gear 42 is raised, the third rack gear 42 is released from engagement with the intermediate gear roll 25, and the block 41 is moved along the guide rail 52. The guide rollers 53 are rotated backwards.                     

On the other hand, the driven gear 71 is also reversely rotated by the reverse rotation of the second gear 72 according to the advance of the second rack gear 28, the screw shaft 75 is reversely rotated, and thus the magnet ( 96 is lowered and disposed below the rail 9.

When the magnet 76 is disposed below the rail 9, the first detection sensor 96 does not detect the magnet 76, and this signal is transmitted to the control panel 94 to drive the vehicle. (6) is restarted again.

As the drive car 6 is re-driven, the transport vehicle 7 is advanced. At this time, since the baggage guides 5 are rotated upwards, the transport vehicle 7 is free of any obstacles. 14) Arranged below, the driver of the drive car 6 stops the drive car 6 at a proper position.

Subsequently, when the operator operates the sack guides 5 downward again, the sack guides 5 push the trolley 20 through the operation as described above, and the magnet 76 Then, the operation of the crane 2 is continued, and the bucket 17 is lowered along the sack guide 5 and the guide rail 14.

At this time, since the magnet 76 sends a detection signal to the first detection sensor 96 again, even if the operator manually operates the drive car 6 around, the control panel 94 stops the drive car 6. To stop automatically. Accordingly, even if the driving operation of the driving vehicle 6 due to the carelessness of the operator occurs, the driving vehicle 6 is not reversed and the collision with the swash guide 6 is automatically prevented.

On the other hand, when the transfer operation of the bucket 17 is completed and the transport vehicle 7 is reversed, the operator operates the swivel guides 6 to be rotated upwards, and then the swivel guides 6 When disappearing from the rear, the operator reverses the drive car 6, and when the transport vehicle 7 is completely retracted and returned to the initial position, the swash guides 5 are also lowered again to return to the initial position. Let's do it.

As such, the sack guide 5 for raising and lowering the bucket 17 according to a series of actions of the collision avoidance device 100 according to the present invention is a collision even if the vehicle 7 enters due to inadvertent operation of an operator. Are automatically prevented.

According to the collision preventing device of the cab clasp guide and the transport vehicle according to the present invention as described above, the bucket guide of the guide rail for raising and lowering the bucket can be fixed firmly even on a strong windy day bucket Ascending and descending of the work is performed stably has a useful effect that the inconvenience of suspended work on a windy day as in the prior art is eliminated.

In addition, according to the anti-collision device of the vehicle guide and the vehicle guide according to the present invention, even if the vehicle entering the scackle guide by the configuration of the magnet and a plurality of sensors is automatically stopped due to the operator's careless operation is stopped conventionally There is a useful effect of preventing the collision of the cab clasp guide and the vehicle in advance to prevent damage to the peripheral equipment, and the workers' safety accidents are prevented because workers do not need to install a manual stopper on the rail as in the prior art. There is a useful effect that is prevented.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (8)

An apparatus for preventing a collision between a bucket loading vehicle and a sack guide rotably installed under the shanghai guide rail of the bucket, Adjusting beams 11 mounted to the sack guides 5 and extending laterally and having a pusher 12 mounted at one end thereof; The roller 27 pushed by the push rod 12 is mounted on the front and the first rack gear 24 engaged with the intermediate gear roll 25 for rotational force transmission on the upper side and the second rack gear 28 at the rear, A bogie 20 which is elastically supported by a rearwardly placed spring 29; The third rack gear 42 meshing with the intermediate gear roll 25 is installed to be moved to the side and the fastening part 50 for holding the adjusting beam 11 is installed in the front and the motor 61 is driven backward. A clamp portion 40 having a block 41 connected to the third rack gear lifting rope 48 to be pulled; And A first sensing sensor mounted at the upper end of the central gear shaft 75 of the driven gear 71 connected to the chain by being spaced apart from the second gear 72 engaged with the second rack gear 28; A collision between the vehicle guide and the vehicle guide, which controls the operation of the transport vehicle 7 to the vehicle guide 5, including a control unit 90 having a magnet 76 which is lifted up and down between the rails to transmit a stop signal to the vehicle 96. Prevention device. The method of claim 1, The roller 27 of the trolley 20 is connected to the pin 27 at the end of the front extension bar 26, the second rack gear 28 is mounted to the end of the connection bar 29a formed rear extension, The spring 29 is supported by the fixing plate 31 which is installed in front of the second rack gear 28 in the rear of the cart and has a hole 31a through which the connecting bar 29a penetrates. Speaking to, the middle gear roll 25 is the collision prevention of the cab clasp guide and the transport vehicle, characterized in that formed integrally with the connecting rod (25a) rotatably connected to the support (32) fixed to both sides of the bogie 20 Device. The method of claim 1, The clamping part 50 of the clamp part 40 is pin-connected and pin-coupled at both ends of the 'c' supporter 44 mounted at the end of the connection bar 43 extending toward the block and the ends of the supporter. The fasteners 45, a pusher 46 mounted in front of the fasteners, and a spring 47 is connected between the support and the back of the fasteners to elastically support the fasteners, characterized in that it comprises a Collision avoidance between guides and transports. The method of claim 1, Each of the third rack gears 42 on both sides of the clamp portion 40 may have a protrusion formed on an inner surface thereof and inserted into a groove 41a vertically formed on the side of the block. The spring 58 connected to the pin 58a mounted on the side of the block is inserted and mounted, and the upper center portion of the third rack gear 42 is wound on the side of the roller 57a installed to be rotated on the side of the block. Is connected to the rope 57, one end of the rope 57 is connected to the connecting rod 56 through the hole formed in the intermediate plate 54 arranged behind the block, one end of the connecting rod 56 Is elastically supported by the spring (49a) to the fixed support 55 fixed to the rear and connected to the support plate 49 connected to the pulling rope in the rear, the third rack gears 42, respectively, the pulling adjustment of the pulling rope Ascending and descending according to the bar is characterized in that the engagement with the intermediate gear roll is adjusted Anti-collision device of large guide and transporters. The method of claim 1, Guide rails 23 for guiding the wheels only within a predetermined section are installed around the wheels 22 of the trolley 20, and an upper portion of the guide table 41b provided on the block side of the clamp part 40 is provided. The guide wheels 53 running along the guide rails 52 formed therein are rotatably coupled, so that the trolley 20 and the block 41 are guided only within a predetermined section. Anti-collision device. The method of claim 1, The magnet 76 of the control unit 90 is mounted on the support plate 83 which is lifted up and down along the guide groove formed on the inner surface of the supporters 77 installed below the rail 9, and the screw below the support plate. A guide piece 85 having a female threaded hole formed at the center thereof is mounted to be screwed up and down as the shaft 75 rotates. A guide path 77a is formed in front of the support, and a guide path 77a is formed at the lower side of the guide path. The collision preventing device of the cab clasp guide and the transport vehicle, characterized in that the spring is connected to the fixed fixing piece (82) is inserted in the flow piece 81 attached to the front of the support plate to support the support plate elasticity. The method of claim 1, The pulling rope 48 is wound around the roller 59 installed at the rear, the central axis of the roller is connected to the motor 61 is installed on the side, the gear 72 of the two-stage gear is the second rack gear ( 28), the lower gear 72b of the two-stage gear and the driven gear 71 are connected to the chain 73, so that the linear motion of the second rack gear 28 along the forward and backward movement is driven by the driven gear 71. Collision prevention device of the vehicle guide and the vehicle guide, characterized in that the conversion to the rotation of the). The method of claim 1, The control unit 90 has a second detection sensor 91 mounted to the magnet 76 and a third detection sensor 92 mounted to the front of the motor 61, and the detection sensors, the magnet and the basscle. A control panel (94) connected to the motor for rotating the guide, the collision prevention device of the vehicle guide and the vehicle guide, characterized in that for automatically controlling the rotation of the cab clad guide based on the signal of the magnet according to the approach to the vehicle.

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