JP4705687B2 - Traffic barrier - Google Patents

Description

  The present invention relates to a traffic barrier that blocks traffic of a vehicle or the like, and more particularly to a traffic barrier that opens and closes by turning a barrier rod.

  For example, an ETC (Electronic Toll Collection) lane installed at a toll gate on a toll road is provided with a traffic barrier in order to limit the speed of passing vehicles. In this type of traffic breaker, a barrier rod that is cantilevered on the drive shaft, that is, connected to the drive shaft so as to extend in a direction crossing the axial direction of the drive shaft, rotates in the vertical direction according to the rotation of the drive shaft. Thus, a configuration for opening and closing is provided.

  In a traffic barrier installed in such an ETC lane or the like, the barrier must be opened and closed quickly each time the vehicle passes, so that it is required to rotate the barrier as quickly as possible. However, when the barrier rod is rotated at a high speed, particularly when the rotation is stopped, vibration due to inertia occurs in the barrier rod that has been stopped suddenly, and the barrier rod after the stop may continue to shake. Therefore, in order to reduce the load caused by inertia, as disclosed in Patent Documents 1 and 2, a technique for specially controlling the motor rotation at the start and stop of rotation has been proposed.

JP 2000-306193 A JP 2007-239335 A

  The conventional techniques described in the above-mentioned patent documents control the rotation of the motor within a short period of time when the barrier rod is opened and closed, so that the degree of difficulty is high and the cost increases. Therefore, in the present invention, a traffic breaker that can reduce a load by a simpler method is proposed.

The traffic barrier proposed for the above problem is
A shut-off drive device;
A barrier rod connected to the drive shaft of the barrier rod drive device and extending in a direction crossing the axial direction of the drive shaft;
Comprising
The interrupting rod drive device is bolted to an attachment surface portion having a surface intersecting the axial direction of the drive shaft in a frame for attaching the interrupting rod drive device,
The bolt for bolting the breaker driving device is passed through the mounting surface through a bolt hole having a diameter larger than the outer diameter of the bolt, and is fastened with elastic washers on both sides of the mounting surface. It is a traffic barrier.

Another aspect of the traffic barrier proposed for the above-mentioned problem is
A shut-off drive device;
A barrier rod connected to the drive shaft of the barrier rod drive device and extending in a direction crossing the axial direction of the drive shaft;
Comprising
The interrupting rod drive device is bolted to an attachment surface portion having a surface intersecting the axial direction of the drive shaft in a frame for attaching the interrupting rod drive device,
A bolt hole in the mounting surface for passing a bolt for bolting the breaker driving device is formed as a long hole substantially along the circumferential direction of the drive shaft, and a bearing is slidably held in the bolt hole. Has been
The bolt is fastened through the mounting surface through the bearing,
It is a traffic breaker provided with a shock absorber for the rotation operation of the breaker driving device due to the sliding of the bearing.

  In the traffic breaker according to the above proposal, the breaker driving device is attached by a structure in which the bolt hole has a diameter larger than the outer diameter of the bolt, and the bolt is fastened by interposing an elastic washer on both sides of the attachment surface portion. . That is, due to the large-diameter bolt hole and the elastic washer, the interrupting rod drive device can be moved by the margin between the bolt and the bolt hole according to the inertial force when the interrupting rod stops. . This movement acts as a buffer to absorb the inertial force, and the vibration of the blocking rod generated when the blocking rod stops from rotating is suppressed.

  Further, the traffic breaker according to the above proposal has a structure in which a bearing is slidably held in a bolt hole having a long hole and the bolt is passed through the bearing, thereby rotating the breaker driving device with respect to the mounting surface portion. It is operably attached. Therefore, according to the inertial force when the blocking rod stops, the blocking rod driving device can rotate by the amount that the bearing can slide in the bolt hole. In addition, a buffer for the rotational operation is provided to buffer the rotational operation. By the rotation operation and buffering of the breaking rod driving device, the inertial force when the breaking rod stops is absorbed, and vibration of the breaking rod is suppressed.

  As described above, the traffic breaker according to the present proposal reduces the load when the breaker is stopped by devising the structure for attaching the breaker driving device, and does not need to use the load reduction by the rotation control of the motor.

The figure of the whole image which shows the traffic barrier installed in the ETC lane as seen from the back and top. The figure which expanded and showed the inside of the traffic barrier of FIG. Sectional drawing which shows the detail of a breaking rod drive device. Sectional drawing of the breaking rod drive device seen in the AA line cross section in FIG. The figure explaining 1st Embodiment of the attachment structure of a breaking rod driving device. The figure explaining 2nd Embodiment of the attachment structure of a breaking rod drive device. The figure which showed an example of the breaker returning apparatus. The figure which showed the other example of the interruption | blocking flaw return apparatus. The figure when the blocking rod is rotated to the retracted position for explaining a method of returning the blocking rod at the retracted position to the open position. The figure when rotating the drive shaft to the angle of the open position of a cutoff rod explaining the system which returns the cutoff rod of a retracted position to an open position. The figure at the time of pushing back the interruption | blocking rod to a vertical direction rotation state explaining the system which returns the interruption | blocking rod of an evacuation position to an open position.

  1A and 1B show an overview of an embodiment of a traffic barrier installed in an ETC lane. 2A and 2B show details of the internal structure of the traffic barrier shown on the right side in FIG. In addition, each of the traffic breakers provided on the left and right with respect to the traffic direction of the vehicle has the same left and right elements, but the arrangement of the elements is symmetrical in accordance with the direction in which the barrier rod is rotated. It has become.

  The traffic breaker 1 is configured by housing a blocking rod driving device 3, a control unit 4, and a blocking rod returning device 5 in a box-shaped housing 2 that covers the whole. The barrier rod drive device 3, the control unit 4, and the barrier rod return device 5 are respectively attached to a stainless base frame 1b fixed on a stainless steel column 1a erected on the ground. Although the breaking rod drive device 3 is bolted as described later, the control unit 4 and the breaking rod returning device 5 are not limited to bolting and can be attached by welding or other fixing methods. The control unit 4 is an electric control unit that performs motor control of the breaking rod driving device 3 and the breaking rod returning device 5.

  A drive shaft 3a protrudes from the casing 2 from the barrier rod drive device 3 attached to the base frame 1b, and the barrier rod 6 is detachably attached to the drive shaft 3a. The blocking rod 6 is formed by covering an aluminum pipe with a cover such as urethane painted in a red and white stripe pattern, for example, and is fitted by fitting one end of the pipe into the rod holder 3b provided on the drive shaft 3a. Is done. The eaves holder 3b is hinged to the drive shaft 3a at the end 3c. That is, the hinge connection end 3c of the eaves holder 3b has a T-shaped cross section, and the hinge connection end 3c is sandwiched between hinge portions 3d having a U-shaped cross section provided at the tip of the drive shaft 3a. The hinge connecting end 3c is pivotally supported at the hinge 3d by the hinge shaft 3e passing through the hinge connecting end 3c and the hinge 3d. The hinge portion 3d has a square shape in plan view, and the chamfer 3f is provided only at one corner of the square. Therefore, the hinge connecting end portion 3c has a hinge axis within a range of approximately 90 ° with the chamfer angle 3f interposed therebetween. 3e can be rotated about the axis.

  In this way, the blocking rod 6 mounted so as to extend in the direction intersecting the axial direction of the drive shaft 3a is in an upright open position (dotted line in FIG. 1A) and lying on the side according to the rotation of the drive shaft 3a. And a closed position (solid line in FIG. 1A). 3 and 4 show an embodiment of the barrier rod drive device 3 that rotates the barrier rod 6 in the vertical direction.

  The barrier rod drive device 3 of the present embodiment is configured by assembling a worm shaft 3h, a buffer means 3i, a worm wheel 3j, a drive shaft 3a, and a motor 3k to an iron housing 3g. The worm shaft 3h has an intermediate portion 3h-a and both end portions 3h-b, 3h-c having a smaller diameter than the intermediate portion 3h-a, and both end portions 3h-b, 3h-c are connected to ball bearings 3h-d, 3h-. By being held at e, it is slidable in the direction of the arrow X and is housed in the housing 3g. One end 3h-b passes through the bearing 3h-d and protrudes to the opposite side, and a pulley 3h-f is provided at the tip, and the pulley 3h-f is connected to the output shaft 3k-a of the motor 3k. The worm shaft 3h is rotated by being driven by the timing belt 3k-b wound around. In the case of the present embodiment, a hexagonal hole 3h-b ′ is recessed in the distal end surface of the end 3h-b, and a handle having a hexagon wrench that fits in the hexagonal hole 3h-b ′ In some cases, the worm shaft 3h can be manually rotated.

  A spiral worm 3h-g is formed in the intermediate portion 3h-a of the worm shaft 3h, and a step portion 3h- is formed at the boundary between the intermediate portion 3h-a and both end portions 3h-b, 3h-c. h, 3h-i are formed. Between the stepped portions 3h-h, 3h-i and the bearings 3h-d, 3h-e, a combination disc spring 3i, which is a combination of four disc springs, is sandwiched as a buffering means.

  The union disc spring 3i is loosely inserted into the end portions 3h-b, 3h-c and is regulated by contacting the step portions 3h-h, 3h-i and the bearings 3h-d, 3h-e. When the shaft 3h slides in the axial direction, a resilient force resisting this is generated. As such a buffer means, a rubber washer, a coil spring or the like can be used. However, since the elastic force is relatively strong and the elastic force is easy to adjust, the combined disc spring 3i is used. Is suitable.

  The worm wheel 3j that meshes with the worm 3h-g of the worm shaft 3h is formed as small as possible within a range necessary for the rotation angle of the blocking rod 6 of approximately 90 °, and is formed in an arc of about 120 °. . The rotating shaft 3j-a of the worm wheel 3j is extended and protrudes from the housing 3g, and the drive shaft 3a is fixed. The rotating shaft 3j-a protruding from the housing 3g has a quadrangular cross section, and the rotating shaft 3j-a is fitted into the end of the drive shaft 3a having a correspondingly shaped recess, and both are fixed so as not to rotate with each other. The

  In this embodiment, the motor 3k that rotates the worm shaft 3h is a DC motor that easily obtains a high output, and is rotated and braked by a drive circuit 3k-c built in the housing 3g. Further, a battery 3k-d is built in the housing 3g, and is driven by the battery 3k-d in an emergency under semiconductor circuit control. An AC motor can also be used as the motor 3k. In this case, a drive circuit necessary for the DC motor can be omitted and a low-priced product can be obtained.

  In the interrupting rod drive device 3 having the above configuration, when the interrupting rod 6 in the closed position is rotated by energizing the motor 3k and stopped at the open position, or vice versa. Then, the motor 3k is braked and stopped. When the worm 3h-g is suddenly stopped by the braking of the motor 3k, the inertia of the blocking rod 6 that stops from the rotation is received by the worm wheel 3j through the drive shaft 3a, so that the worm shaft 3h is slid by the inertia force. The power to work. With respect to this inertia, the combination disc spring 3i provided at both end portions 3h-b, 3h-c of the worm shaft 3h generates and absorbs a resilient force, so that it can withstand the load when the shut-off rod 6 stops from rotating. It is a structure to obtain. Therefore, it is possible to reduce the size and weight together with the adoption of a worm gear that can be compactly designed, and the degree of freedom of the position of installing the breaker is improved. In addition, by adopting the worm gear structure of the configuration, it is substantially impossible to manually rotate the drive shaft 3 a with the blocking bar 6.

  5A and 5B show a first embodiment of the method of bolting the base rod 1b of the barrier rod driving device 3 with enlarged views. FIG. 5 shows an enlarged view of the upper left bolt 1c portion in FIG. 2A, and the other bolts 1c have the same tightening structure. The bolts 1c illustrated in FIGS. 2 and 8 to 10 are provided at four locations around the drive shaft 3a (two locations on the upper side of the drive shaft 3a and two locations on the lower side). The distance from the center of the drive shaft 3a to the center of each bolt 1c is substantially equal, so that the load is not biased to any of the bolts 1c.

  The barrier rod drive device 3 is bolted to an upright side wall portion of the base frame 1b, that is, a mounting surface portion 1b-a having a surface intersecting the axial direction of the drive shaft 3a. The hexagon bolt 1c to be attached passes through the attachment surface portion 1b-a from the opposite side of the attachment surface portion 1b-a, and is screwed into the bolt hole 3g-a of the housing 3g to be tightened. The bolt hole 1d of the mounting surface portion 1b-a through which the bolt 1c passes is formed with a diameter larger than the outer diameter of the bolt 1c, that is, the outer diameter of the shaft portion 1e (so-called fool hole), and the shaft portion 1e has a bolt hole. It can move within 1d. Between the head of the bolt 1c and the mounting surface portion 1b-a, and between the mounting surface portion 1b-a and the housing 3g, each is made of rubber and has a thickness of several millimeters to several tens of millimeters (or a disc spring). The elastic washer 1f that can be used is sandwiched, and elastic force is generated. That is, the bolt 1c is fastened with elastic washers 1f interposed on both sides of the mounting surface portion 1b-a, and fastened so as to sandwich the mounting surface portion 1b-a by these elastic washers 1f.

  The bolt 1c is not limited to a hexagonal bolt with a head, and various bolts that can hold the mounting surface portion 1b-a with an elastic washer 1f, such as a configuration in which a nut is combined with a stud bolt, are used. obtain. The bolt 1c is not limited to the structure in which the bolt 1c is tightened from the opposite side of the mounting surface portion 1b-a. For example, a stud bolt is erected in advance in the housing 3g of the breaking rod driving device 3, and this is passed through the bolt hole 1d. The nut can be tightened from the opposite side of the mounting surface portion 1b-a.

  In this way, the bolt hole 1d through which the shaft portion 1e is passed has a large diameter that allows the shaft portion 1e to move about several millimeters, and the elastic washer 1f is interposed on both sides of the mounting surface portion 1b-a to tighten the bolt. Accordingly, the inertia force generated when the blocking bar 6 rotates in the vertical direction and stops at the closed position and when the blocking bar 6 stops at the open position can be suppressed, and the vibration of the blocking bar 6 generated when stopping from the rotation can be suppressed. . That is, when the breaking bar 6 suddenly stops from rotating, the inertial force is a force that acts to rotate the blocking bar driving device 3 through the drive shaft 3a. When this force is applied, according to the bolted structure, since the elastic washer 1f is interposed, the breaking rod driving device 3 has a margin of the bolt hole 1d with respect to the shaft portion 1e in the direction of the force. It can move (rotate) by the minute. As a result, the inertial force is absorbed, so that the vibration of the blocking bar 6 that is generated when stopping from the rotation is suppressed.

  6A and 6B show a second embodiment relating to a method of bolting the base rod 1b of the barrier rod drive device 3. FIG. FIG. 6 shows a drawing corresponding to FIG. 2A, and elements other than the base frame 1 b ′ and the blocking rod driving device 3 are omitted.

  As in the first embodiment, the barrier rod driving device 3 is bolted to the mounting surface portion 1b'-a having a surface intersecting the axial direction of the drive shaft 3a in the base frame 1b '. In this case, the drive shaft 3a protrudes through a shaft hole 1b'-b opened in the mounting surface portion 1b'-a. The hexagonal bolt 1c ′ for mounting the breaking rod driving device 3 passes through the mounting surface portion 1b′-a from the opposite side of the mounting surface portion 1b′-a, and is screwed into the bolt hole 3g-a of the housing 3g to be tightened ( (See FIG. 5B). In the case of this embodiment, the bolt hole 1d ′ of the mounting surface portion 1b′-a provided for passing the bolt 1c ′ is formed as a long hole having a shape along the circumferential direction around the axis of the drive shaft 3a. Has been. The bearing 1g is held in the bolt hole 1d 'and can slide along the bolt hole 1d'.

  The shaft portion 1e 'of the bolt 1c' passes through the mounting surface portion 1b'-a through the bearing 1g (see an enlarged sectional view in Fig. 6A). A spring washer 1h and a washer 1i are sandwiched between the head of the bolt 1c 'and the bearing 1g, and a washer 1i is sandwiched between the housing 3g on the opposite side and the bearing 1g. Yes. The bolt 1c 'and the bearing 1g are securely fixed by the interposition of these washers 1h and 1i. Further, when the collar 1j is sandwiched between the washer 1i and the mounting surface portion 1b'-a, and the bearing 1g is thicker than the mounting surface portion 1b'-a, it is difficult to mount the breaking rod driving device 3. It is like that. The collar 1j is a resin ring surrounding the bearing 1g.

  Thus, since the bolt 1c ′ is passed through the mounting surface portion 1b′-a through the bearing 1g and fastened, the shut-off material driving device 3 has the amount that the bearing 1g can slide in the bolt hole 1d ′. Attached to be able to rotate. Two shock absorbers 1k are provided in order to buffer the rotating operation of the breaking rod driving device 3. The two shock absorbers 1k are installed between the bottom surface of the base plate 1b 'and the breaking rod driving device 3 at substantially symmetrical positions with the driving shaft 3a interposed therebetween. Therefore, in FIG. 6, buffering is performed both when the breaking rod driving device 3 rotates clockwise and when it rotates counterclockwise. As the shock absorber 1k, various types of shock absorbers of a coil spring built-in type, a hydraulic pressure (hydraulic pressure) type, and an atmospheric pressure (air) type can be used. The buffer 1k can be installed at a location other than the bottom, such as a side, as long as the buffering operation of the breaking rod driving device 3 is buffered.

  As described above, the bolt 1c 'is not limited to a hexagon bolt with a head, and various bolts that can be fastened through the bearing 1g, such as a configuration in which a nut is combined with a stud bolt, can be used. The bolt 1c ′ is not limited to the structure in which the bolt 1c ′ is tightened from the opposite side of the mounting surface portion 1b′-a. For example, a stud bolt is erected in advance in the housing 3g of the breaking rod driving device 3, and this is attached to the bearing 1g. The nut may be tightened from the opposite side of the mounting surface portion 1b'-a.

  The bolting structure according to the second embodiment has a structure in which the bearing 1g is slidably held in the bolt hole 1d ′ which is a long hole, and the bolt 1c ′ is passed through the bearing 1g. It is attached to the attachment surface portion 1b'-a so as to be rotatable. Therefore, according to the inertial force when the blocking rod 6 stops, the blocking rod driving device 3 can rotate by a distance that allows the bearing 1g to slide within the bolt hole 1d ′, and the rotation The operation is buffered by the buffer 1k. By the rotation operation and buffering of the breaking rod driving device 3, the inertia force when the breaking rod 6 stops at the open position or the closed position is absorbed, and the vibration of the breaking rod 6 is suppressed.

  As shown in FIGS. 1B and 2B, since the eaves holder 3b is hinged to the drive shaft 3a, the blocking eave 6 attached to the eaves holder 3b is approximately 90 in the horizontal direction when the vehicle collides in the closed position. ° It is possible to rotate and retract to the retracted position. The rotation of the blocking rod 6 to the retracted position is detected by, for example, a sensor similar to the above-described patent document, and in response to the detection, the lamp 2a provided in the housing 2 is turned on in this embodiment, thereby Informed. The person who has received the notification operates the switch 2b provided on the housing 2 to operate the shutoff rod returning device 5 and return the shutoff rod 6 to the vertical rotation state. The lamp 2a and the switch 2b can also be provided in a booth where a person is normally waiting as a remote operation.

An example of the breaker returning device 5 will be described with reference to FIGS. 1, 2, and 7. FIG. 7 shows the breaking rod returning device 5 as seen from the direction indicated by the arrow Y in FIG.
7 is fixed to the side wall portion of the base frame 1b to which the interrupting rod driving device 3 and the control unit 4 are attached, and is installed adjacent to the interrupting rod driving device 3. Specifically, the barrier rod returning device 5 has a side wall portion of an L-shaped frame 5a fixed to the base frame 1b by bolting or welding, and the frame 5a is rotated by a motor 5b and a motor 5b as actuators. A pinion gear 5c that rotates and a rack gear 5d that moves forward and backward according to the pinion gear 5c are attached.

  The motor 5b is provided with a speed reducer 5e at the head, and is fixed to the bottom surface of the bottom wall of the frame 5a. The output shaft of the speed reducer 5e passes through the bottom wall portion of the frame 5a and protrudes to the upper surface side, and the pinion gear 5c is fixed. The rack gear 5d that meshes with the pinion gear 5c has a rod shape extending in the axial direction of the drive shaft 3a, and a reciprocating arm 5f is connected to one end thereof. A rod-shaped rack gear 5d having a gear cut on its side surface is supported by two bearing blocks 5g mounted and fixed on the frame 5a, and slides in the axial direction of the drive shaft 3a. The pinion gear 5c meshes with the rack gear 5d between the two bearing blocks 5g that are spaced apart, and the rack gear 5d moves forward and backward as the pinion gear 5c rotates forward and backward. Therefore, the reciprocating arm 5f connected to the rack gear 5d moves forward and backward in the axial direction of the drive shaft 3a (see FIG. 2B).

  Each of the two bearing blocks 5g in the example of FIG. 7 has two bearings (bushes) arranged in parallel in the vertical direction, and the rack gear 5d is supported through each lower bearing. On the other hand, a guide rod 5h extending parallel to the rack gear 5d is supported through each upper bearing, and one end of the guide rod 5h is also connected to the reciprocating arm 5f. Accordingly, the guide rod 5h moves forward and backward together with the rack gear 5d, thereby preventing the reciprocating arm 5f from rotating and shaking.

  A plate 5i is connected to the other end of the rack gear 5d and the guide rod 5h. When the rack gear 5d is moved forward most, it abuts on a limit switch 5j provided on the frame 5a. Two limit switches 5j are provided at the front and rear, and when the rack gear 5d is retracted, the reciprocating arm 5f that has retracted contacts the front limit switch 5j, so that the motor 5b stops. On the other hand, when the rack gear 5d moves forward, the plate 5i that has moved forward contacts the limit switch 5j on the rear side, so that the motor 5b that has been rotating forward until then starts reverse rotation.

  The reciprocating arm 5f that moves forward by the rack gear 5d extends to a lateral position of the hinge portion 3d of the drive shaft 3a, and engages with a protruding piece 3l that protrudes obliquely rearward from the hinge connection end portion 3c of the rod holder 3b. By pushing out the protruding piece 3l, the heel holder 3b is rotated horizontally to the closed position. That is, when the reciprocating arm 3f moves forward, the blocking bar 6 in the retracted position is pushed back to the vertical rotation state. When the reciprocating arm 3f moves forward most, the blocking rod 6 returns to the closed position, and the opposite plate 5i comes into contact with the limit switch 5j, so that the motor 5b turns to reverse rotation and the reverse operation is started. When the reciprocating arm 5f that has retreated last comes into contact with the limit switch 5j, the motor 5b stops and the reciprocating arm 5f is held in the retracted position. Thereafter, the shutting bar 6 that has returned to the closed position is restored to the normal operation of rotating in the vertical direction between the closed position and the open position by the shutting bar driving device 3.

  In the breaking rod returning device 5 shown in FIG. 7, a rack gear 5d is provided so as to move forward and backward in the axial direction of the drive shaft 3a, and the reciprocating arm 5f is engaged with the protruding piece 3l to push the breaking rod 6 back. Yes. The reciprocating arm is not limited to this, and the reciprocating arm is arranged such that the rack gear 5d moves forward and backward in the crossing direction (see FIG. 2B) with respect to the axial direction of the drive shaft 3a by separately erecting the frame 5a away from the base frame 1b. It is also possible to have a structure in which 5f directly pushes the blocking rod 6 (the rod holder 3b). However, the arrangement in the axial direction illustrated in FIG. 2 is excellent for compactly installing the breaking rod returning device 5 adjacent to the breaking rod driving device 3.

  FIG. 8 shows another example of the breaker returning device as seen from the same direction as FIG. 8, as in the example of FIG. 7, moves the reciprocating arm 51 forward and backward in the axial direction of the drive shaft 3 a, but is not a rack and pinion but a screw shaft that is rotated by a motor 52. An actuator including 53 and a nut cylinder 54 screwed onto the screw shaft 53 is used.

  The motor 52 has a speed reducer 55 at the head, and is fixed in a recumbent state to a rear flange portion of the frame 56 fixed to the side wall portion of the base frame 1b. The output shaft of the speed reducer 55 passes through the flange portion, and the drive gear 57 is fixed to the output shaft protruding through the flange portion. The drive gear 57 meshes with a driven gear 58 provided at the end of the screw shaft 53 and rotates forward and backward. The screw shaft 53 passes through the rear flange portion of the frame 56 through a bearing, and the nut 59 of the nut cylinder 54 is screwed to the screw shaft 53 extending through the screw shaft 53. The nut cylinder 54 surrounds the screw shaft 53 and extends in the coaxial direction, and passes through the front flange portion of the frame 56 through a bearing. The reciprocating arm 51 is connected to one end of the nut cylinder 54 that has passed through. When the screw shaft 53 rotates according to the rotation of the driven gear 58, the nut 59 screwed to the screw shaft 53 moves forward and backward according to the forward / reverse rotation, so that the entire nut cylinder 54 moves forward and backward accordingly. As the nut cylinder 54 moves forward and backward, the reciprocating arm 51 connected to one end of the nut cylinder 54 moves forward and backward, and the barrier rod 6 is brought into a vertically rotating state in the same manner as the barrier rod returning device 5 of FIG. Push back.

  Two guide rods 60 are connected to the reciprocating arm 51 in parallel above and below the nut cylinder 54. The guide rod 60 penetrates the front flange portion of the frame 56 via a bush, and can slide back and forth. Therefore, the reciprocating arm 51 and the nut cylinder 54 do not rotate even if the screw shaft 53 rotates, but move forward and backward as the screw shaft 53 rotates. A limit switch for detecting the most forward movement and the most backward movement of the reciprocating arm 51 can be provided similarly to the example of FIG. 7, but in the case of the example of FIG. I have control. Further, the screw shaft 53 and the nut cylinder 54 are accommodated in a cover cylinder 61 fixed between both front and rear flange portions of the frame 56, so that the drive portion is not exposed to the outside.

  In addition, the actuator may be configured by using a hydraulic (hydraulic) cylinder or an atmospheric (air) cylinder, and a structure in which a reciprocating arm is connected to the rod. However, considering the ease of maintenance and control, the actuator by the motor control in the above example is superior.

  The traffic barrier 1 according to the above embodiment returns the blocking bar 6 that has been rotated horizontally from the closed position to the retracted position, to the closed position (the recumbent state) by the blocking bar returning device 5 (50). In other words, it is a mechanism to push back while rotating in the horizontal direction. However, when the barrier rod 6 is returned from the retracted position to the closed position (that is, when the barrier rod 6 is rotated and returned in the horizontal direction), when viewed from the passing vehicle, the barrier rod 6 closes toward the vehicle. It is not preferable. The traffic breaker 1 as a return method for solving this will be described with reference to FIGS.

  FIG. 9 to FIG. 11 show a traffic barrier 1 that uses a method for returning the barrier 6 in the retracted position to the open position. In other words, the barrier rod 6 at the retracted position is pushed back by the barrier rod returning device 5 while rotating upward. 9A, 10A, and 11A correspond to FIG. 2A, and FIGS. 9B, 10B, and 11B correspond to FIG. 2B.

  In the traffic barrier 1, the housing 2, the barrier rod drive device 3, the control unit 4, and the barrier rod return device 5 are the same as those in the embodiment shown in FIG. 2. However, the attachment position of the breaker returning device 5 to the base frame 1b and the shape of the reciprocating arm 5f 'are slightly different. That is, the frame 5a of the breaker returning device 5 is attached below the case of FIG. 2, and the reciprocating arm 5f 'is extended to a position below the hinge portion 3d of the drive shaft 3a. In addition, the attachment position of the breaking rod returning device 5 in the case of this method may be on the bottom surface of the base frame 1b, that is, below the breaking rod driving device 3.

  When the blocking bar 6 rotates horizontally from the closed position to the retracted position due to a collision of a passing vehicle (FIG. 9), the rotation is detected by the aforementioned sensor, and the lamp 2a is turned on. When the switch 2b is operated in response to this, the blocking rod drive device 3 first rotates the drive shaft 3a to the angle of the open position of the blocking rod 6 (FIG. 10). That is, in the case shown in FIG. 10, the blocking rod driving device 3 rotates the drive shaft 3a clockwise by 90 ° so that the rod holder 3b can be returned upward, which is the open position, and the hinge connecting end 3c and the hinge The angle is such that the portion 3d bends upward.

  Due to the rotation of the drive shaft 3a, the projecting piece 3l changes from the lateral direction to the downward direction and comes to a position where it can be engaged with the reciprocating arm 5f '. Therefore, after the drive shaft 3a rotates to the angle of the open position of the blocking rod 6, when the motor 5b of the blocking rod returning device 5 rotates forward and the reciprocating arm 5f 'moves forward, the reciprocating arm 5f' that moves forward becomes the protruding piece. The protrusion 3l is pushed out (FIG. 11). Accordingly, the scissor holder 3b is rotated upward toward the open position, so that the reciprocating arm 3f moves forward, whereby the shutoff scissors 6 at the retracted position is pushed back to the vertical rotation state and returned to the open position. The operation of each other part is the same as in the above embodiment.

  According to this method, the blocking bar 6 is rotated upward from the retracted position and returned to the open position, and then is closed to the closed position by the vertical rotation of the normal opening / closing operation. Therefore, it is not an image in which the barrier 6 closes toward the vehicle.

1 traffic blocker 1b, 1b 'base frame 1b-a, 1b'-a mounting surface 1c, 1c' bolt 1d, 1d 'bolt hole 1e, 1e' shaft 1f elastic washer 1h spring washer 1i washer 1j color 1k shock absorber 2 Housing 3 Shielding rod drive device 4 Control unit 5 Shielding rod return device 5a Frame 5b Motor 5c Pinion gear 5d Rack gear 5e Reducer 5f, 5f 'Reciprocating arm 5g Bearing block 5h Guide rod 5i Plate 5j Limit switch 6 Shielding rod 50 Shielding rod Returning device 51 Reciprocating arm 52 Motor 53 Screw shaft 54 Nut cylinder 55 Reducer 56 Frame 57 Drive gear 58 Driven gear 59 Nut 60 Guide rod

Claims (2)

A shut-off drive device;
A barrier rod connected to the drive shaft of the barrier rod drive device and extending in a direction crossing the axial direction of the drive shaft;
Comprising
The interrupting rod drive device is bolted to an attachment surface portion having a surface intersecting the axial direction of the drive shaft in a frame for attaching the interrupting rod drive device,
The bolt for bolting the breaker driving device is passed through the mounting surface through a bolt hole having a diameter larger than the outer diameter of the bolt, and is fastened with elastic washers on both sides of the mounting surface.
Traffic barrier. A shut-off drive device;
A barrier rod connected to the drive shaft of the barrier rod drive device and extending in a direction crossing the axial direction of the drive shaft;
Comprising
The interrupting rod drive device is bolted to an attachment surface portion having a surface intersecting the axial direction of the drive shaft in a frame for attaching the interrupting rod drive device,
A bolt hole in the mounting surface for passing a bolt for bolting the breaker driving device is formed as a long hole substantially along the circumferential direction of the drive shaft, and a bearing is slidably held in the bolt hole. Has been
The bolt is fastened through the mounting surface through the bearing,
A shock absorber is provided for the rotational movement of the gate drive device by sliding the bearing.
Traffic barrier.

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