JP2000027132A - Car approach preventive fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open and close and move a fence body rapidly and simply without requiring hands and the time at a normal time (the time of non-service interruption), and open and close and move the fence body even at the time of service interruption. SOLUTION: A fence-body drive mechanism 7, in which an electric motor 7b is used as a power source, a pinion 9 fixed to an output shaft 7a interlocked with the electric motor 7b is engaged with a rack 5 disposed along the longitudinal direction of a fence body 1 and the fence body 1 is opened and closed and shifted through the rack 5 by the rotary operation of the electric motor 7b, a rack-pinion engaging manual release mechanism 8, in which at least a part of the fence-body drive mechanism 7 is moved at a desired time, the pinion 9 is separated from the rack 5, engagement with the rack 5 is released forcibly and the fence body 1 is brought manually to the freely open-close moving state, are installed. The fence body 1 can be opened and closed and shifted by the power of the electric motor 7b at a normal time, and the engagement of the pinion 9 and the rack 5 is released forcibly and the fence body 1 can be opened and closed and moved manually at the time of service interruption.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle entry blocking fence particularly suitable for security.

[0002]

2. Description of the Related Art Regardless of public or private, at a relatively wide gate of an important facility, a vehicle entry blocking fence is often installed in order to prevent invasion of useless persons, in particular, forced breakthrough by a vehicle. . In particular, mansions of the noble kings and heads of state,
In government residences, offices, and lodging facilities for guests such as state guests, guard entrance barriers are often installed at their main gates and gates.

[0003] Such a vehicle entry blocking fence is opened and closed (moved) so that, when necessary, for example, a vehicle occupied by a resident of the house or facility or a guest, or a person related thereto, or a cargo vehicle can easily pass through. It is configured to be possible.

[0004] By the way, this kind of conventional vehicle entry blocking fence is configured to be manually opened and closed. This is a catastrophic situation in which the vehicle cannot be opened or closed in the event that power cannot be received due to a power outage, etc. This is because they did not fall into.

[0005]

As described above, the conventional vehicle entry blocking fence has the advantage that it can be opened and closed in the event of a power failure because it has a manual opening and closing structure. Even during a non-power failure, there is a problem that it requires time and labor and cannot be opened and closed quickly and easily.

More specifically, since the vehicle entry blocking fence blocks entry of a vehicle, it is made of steel or the like and is made robustly, and its weight is considerable. In particular, in the case of a fence for preventing the entry of a vehicle for security, the tendency is strong because the toughness increases. Further, in the case of a gate with a wide frontage, the lateral width (fence length) of the entire fence also increases, so that not only does the weight increase, but also the movement distance when opening and closing increases.

[0007] As described above, the more the vehicle entry preventing fence is made more robust and the longer the fence length, the greater the weight thereof, and the longer the fence length, the longer the moving distance.

In such a vehicle entry blocking fence, adopting a manual opening / closing structure as in the related art requires more manpower and time.

In general, power failures are extremely rare, and the irrationality of manually opening and closing them during normal times (non-power failures) cannot be wiped out due to such rare situations. Therefore, improvement in these points has been demanded.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned demands, and can be quickly and easily opened and closed as a motorized opening / closing structure without the need for manual and time-consuming opening and closing during normal times (when there is no power failure).
In addition, it is an object of the present invention to provide a vehicle entry blocking fence that can be opened and closed at the time of a power failure and can also achieve the purpose of security.

[0011]

According to a first aspect of the present invention, there is provided a fence body which has a width sufficient to at least block a vehicle passage, and which can be freely opened and closed in a longitudinal direction orthogonal to the vehicle passage. A rack arranged along the longitudinal direction of the fence main body, and a pinion fixed to an output rotation shaft interlocked with the electric motor using at least the electric motor as a power source, meshed with the rack, and the electric motor rotates to rotate the pinion. A fence body drive mechanism for opening and closing the fence body via a rack;
A rack and pinion meshing manual release mechanism that moves at least a part of the fence main body driving mechanism and allows the pinion to be separated from the rack; And the pinion is forcibly released, and the fence main body can be manually opened and closed.

The fence main body is movable in the longitudinal direction, and a rack is provided along the longitudinal direction of the fence main body. A pinion meshing with the rack is driven by a fence main body driving mechanism using an electric motor as a power source. Rotate to open and close the fence body.
That is, the fence main body is opened and closed by electric power, and can be quickly and easily opened and closed at normal times (when there is no power outage) without requiring much time and labor.

The rack and pinion manual disengagement mechanism moves the fence main body drive mechanism so that the pinion can be separated from the rack. Since the main body can be manually opened and closed and movable, it can be opened and closed when the power is cut off at the time of a power failure or the like, thereby achieving the purpose of security.

According to a second aspect of the present invention, the rack is fixed to the fence main body with the tooth tip facing upward, and meshes with the pinion located above the rack.

When the rack is fixed to the fence main body with its tooth tip facing upward, and engaged with a pinion located above the rack, the fence main body is inclined to the rear side by receiving an impact from a vehicle or the like from the front side. However, at this time, the rack receives a force in such a direction as to be pressed against the upper pinion. Therefore,
These meshes do not disengage, and the fence body does not move carelessly, so that the purpose of security can be achieved. In addition, the impact can be partially received by a pinion, and a greater overturn prevention effect can be obtained.

According to a third aspect of the present invention, the rack / pinion manual release mechanism includes a hydraulic jack or a screw jack, and a part of the fence body driving mechanism is manually operated by the hydraulic jack or the screw jack. It is characterized by tilting and floating the pinion until it is separated from the rack.

[0017] A rack / pump using a hydraulic jack or a screw gear
By configuring a pinion meshing manual release mechanism, with a light operating force,
A part of the fence body drive mechanism can be tilted to a position where the pinion moves away from the rack.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 3 are overall structural views showing an embodiment of a vehicle entry blocking fence according to the present invention. FIG. 1 is a front view,
2 is a plan view and FIG. 3 is a right side view. FIG. 4 is a partially omitted cross-sectional view taken along the line AA of FIG. 2 showing the fence main body driving mechanism and its vicinity, and FIG. 5 is a partially omitted cross-sectional view taken along the line BB of FIG. FIG. 6 and FIG. 6 are partially omitted cross-sectional views showing a state in which the fence main body drive mechanism of FIG. 5 is tilted.

In each of the figures, reference numeral 1 denotes a fence body having a longitudinal width sufficient to block the vehicle passage 3 in which the fixed fences 14 are arranged on both sides, for example, a substantially same width as the vehicle passage 3.
It can be freely opened and closed in the longitudinal direction (the opening and closing direction of the vehicle passage; left and right directions in FIGS. 1 and 2). Here, the fence main body 1 includes a heavy frame 1a made of an iron material or the like, and substantially equally spaced along the longitudinal direction of the frame 1a (the left-right direction in FIGS. 1 and 2).
A large number of fence plates 1b fixed so as to be orthogonal to the frame 1a,
1b.

The frame 1a is formed by welding eight prismatic iron members so that each iron material becomes a rectangular parallelepiped frame. The longitudinal middle portion is reinforced with another prismatic iron material. It is.

The fence plate 1b is formed by joining the tops of two pieces which are welded so as to stand on the front side and the back side on the upper surface of the frame 1a.
As shown in FIG. 3, a plurality of fence plates ₁ b are connected in parallel at equal intervals to each other by connecting inclined pieces ₁ b ₁ that are inclined so as to become higher from the front side to the rear side. The inclined surface descending from the side to the front side is the frame 1a.
Formed on top. Accordingly, there is no feeling of oppression when viewed from the front side, and since the inside of the fence main body 1 can be seen through the space between the fence plates 1b, the field of view is not obstructed by the fence main body 1.

The frame 1a to which the fence plate 1b is attached
A plurality of grids 1c are respectively attached to both sides of the frame 1 at an interval in the front-rear direction (the horizontal direction in FIG. 3) to prevent a person from entering from the side of the frame 1a. .

The fence body 1 has a plurality of lower end portions,
For example, as shown in the figure, a heavy sliding door 2 rotatably mounted at a total of three places, ie, two places near the left and right sides and one place substantially at the center, opens and closes the vehicle passage 3 (left and right directions in FIGS. 1 and 2). It is movable by being guided and guided on a guide rail 4 laid on the vehicle.

Since the fence main body 1 has a structure having a depth in the front and rear direction, the heavy door roller 2 and the guide rail 4 are provided as a pair on the front and rear sides, respectively. As shown in FIG. 4, on both sides of a roller 2a running on a guide rail 4 of each heavy door roller 2, an inner ring 2b is provided inside and a fall prevention plate 2c is provided outside.
Is attached to prevent derailing from the guide rail 4 and falling of the entire fence body 1.

The length of the guide rail 4 is set to be at least equal to the total length of the fence main body 1 plus the open / close length of the vehicle passage 3. Here, the fence main body 1 is formed to have a length approximately twice as long as the entire length, and the fence main body 1 can be fully opened and closed.

Reference numeral 5 denotes a rack fixed to the back of the fence main body 1 downward along the longitudinal direction of the fence main body 1. The length of the rack 5 is set to be at least as long as the opening and closing length of the vehicle passage, and the fence body 1 can be fully opened and closed between a position where the vehicle passage 3 is shut off and a position where the fence is retracted. In the present embodiment, the length is the same as the entire length of the fence main body 1.

Reference numeral 6 denotes a fence main body drive control device installed near the non-opening / closing side of the fence main body 1, in this case, the right rear side in FIGS. 1 and 2. And a manual release mechanism for rack and pinion engagement, here a hydraulic jack 8.

The fence main body driving mechanism 7 uses an electric motor 7b as a power source, and controls the rotation of the electric motor 7b to a speed reducer 7
c, the power is transmitted to the output rotation shaft 7a protruding forward. A pinion 9 meshing with the rack 5 is fixed to the output rotary shaft 7a, and the fence main body 1 is opened and closed via the rack 5 by the rotation operation of the pinion 9 (the horizontal direction movement in FIGS. 1 and 2). It is to let.

As the electric motor 7b, for example, a three-phase 200V AC motor having an output sufficient to open and close the fence main body 1 in combination with the speed reducer 7c and capable of rotating forward and reverse is used. The electric motor 7b rotates in a direction to open the fence main body 1 by an ON operation of an open switch (not shown), and rotates in a direction to close and move the fence main body 1 by an ON operation of a close switch (not shown). I do. The above open / close switch is normally turned ON only when pressed, and otherwise OFF.
A push button switch that is in the F state is used.

Further, two limit switches LSW1 and LSW2 having an actuator protruding from the front side (the fence main body 1 side) are attached to the fence main body drive control device 6. These limit switches LSW1 and LSW2 are
At the fully open position and the fully closed position of the fence main body 1, respectively, a fully open ridge 1 formed at a corresponding portion on the back surface of the fence main body 1.
5. The electric motor 7b comes into contact with the fully-closed ridge 16 to turn off the electric motor 7b. Therefore, the open or close switch is set to O
Even if the N operation is continued, the fence body 1 automatically stops at the fully open position or the fully closed position.

Further, an emergency stop push button switch (not shown) for immediately stopping the moving fence main body 1 irrespective of opening and closing movements is also provided. Each push-button switch is provided on an operation panel installed in a guardhouse or the like (not shown).

The fence body drive mechanism 7 is mounted on a pedestal 10 which is arranged to be vertically tiltable with respect to a base 11 fixed to the ground. That is,
As shown in FIG. 5, the pedestal 10 includes a driving mechanism support base 10a.
And a pair of rotating arms 10b, 10b vertically extending at right angles at the base end (right end in FIG. 5), and the base rotating arms 10b, 10b stand upright from the base 11. By being rotatably supported between the rotating projections 11a, 11a, it is possible to tilt around the base end together with the mounted fence main body driving mechanism 7. The tip of the pedestal 10 (the left end in FIG. 5) normally rests on the upper surface of the support leg 11b of the base 11, and the pedestal 10 is horizontally moved by the load of the pedestal 10 and the fence main body driving mechanism 7 placed on the pedestal 10. Held in state.

As shown in FIG. 4, the rack 5 is fixed to the back surface of the fence main body 1 with the tooth tip facing upward, and the pinion 9 is engaged with the rack 5 from above when the pedestal 10 is horizontal. It has become.

A guide pin 12 is attached to the pedestal 10 through a tip portion thereof, and is loosely fitted in a guide hole 17 formed from the upper surface of the support leg 11b. The guide pin 12 is loosely fitted into the guide hole 17 to prevent the pedestal 11 from being displaced in the plane 2 direction, so that the pinion 9 does not deviate from the engagement position with the rack 5 even if the tilting is repeated. .

The hydraulic jack 8 tilts the pedestal 10 when desired, for example, when the power supply for driving the electric motor is cut off due to a power failure, and separates the pinion 9 of the fence main body driving mechanism 7 from the rack 5. By forcibly releasing the engagement with the rack 5, the fence main body 1 can be manually opened and closed and movable.

For this reason, the hydraulic jack 8 is fixed on the base 11, and when it is not operated (normal time), its lifting / lowering portion 8a is
The drive mechanism support 10a is configured to abut on an intermediate lower surface.

When desired, the handle 8b of the hydraulic jack 8
5 is rotated in the direction of arrow A in FIG. 5, as shown in FIG. 6, the elevating unit 8a is raised to a predetermined height, and the drive mechanism support base 10a is pivoted around the rotating arms 10b and 10b. After rotating (tilting) by a predetermined angle in the clockwise direction, the tooth tip of the pinion 9 is separated upward from the tooth tip of the rack 5, and the engagement between the two is forcibly released.

Next, the operation of the above-described vehicle entry blocking fence will be described.

The normal opening / closing operation is performed by pressing and releasing the open / close push button switch. For example, in the opening operation, when the opening push button switch is pressed, the electric motor 7b rotates forward, for example, and opens the fence main body 1 via the speed reducer 7c, the pinion 9 and the rack 5 (moves rightward in FIGS. 1 and 2). Let it. When the pressing of the open push button switch is stopped, the electric motor 7
b stops, and the fence body 1 stops at the open / close position at that time. As a result, the fence body 1 is opened and closed by electric power.
The fence can be opened and closed easily. In addition, even if the pressing is not released after pressing the open / close push button switch, the fence main body 1 is stopped at the fully open or fully closed position by the limit switches LSW1 and LSW2, thereby ensuring safety.

Next, the opening / closing operation when the power supply for driving the electric motor is cut off, such as during a power failure, will be described. In this case, the handle 8b of the hydraulic jack 8 is rotated in the direction of arrow A in FIG. By this operation, as shown in FIG. 6, the lifting / lowering portion 8a of the hydraulic jack 8 pushes up the pedestal 10 to rotate (tilt) clockwise about the rotating arm 10b as a fulcrum, and the rack 5 of the pinion 9 is Is forcibly released. Thereby, the fence main body 1 is completely free from the fence main body drive control device 6, particularly the fence main body drive mechanism 7, and is free from mechanical restraint, and can be manually opened and closed. Therefore, opening and closing at the time of a power failure or the like becomes possible, and the purpose of security can be achieved.

The rack 5 is fixed to the fence main body 1 with its tooth tips facing upward, and is configured to engage with the pinion 9 located above the rack 5, so that the fence main body 1 can be moved from the front side by a vehicle or the like. Even if the rack 5 is inclined rearward due to the impact, the rack 5 receives a force in such a direction as to be pressed against the pinion 9 on the upper side. Therefore, the meshing of both does not come off, and the fence main body 1 does not move carelessly,
The purpose of guarding can be achieved. The impact is
A part thereof can be received by the pinion 9, and a greater overturn prevention effect can be obtained.

By constructing the rack and pinion meshing manual release mechanism using the hydraulic jack 8, the structure can be simplified and the rack and pinion can be released from engagement with a light operating force. Instead of this hydraulic jack 8, a screw jack may be used to constitute a rack and pinion meshing manual release mechanism. in this case,
By rotating the handle attached to the screw gear, the elevating part can be raised and lowered to move the pinion 9 toward and away from the rack 5,
As with the case where the hydraulic jack 8 is used, the engagement between the rack and the pinion can be released with a light operating force.

[0044]

As described above, according to the present invention, opening and closing at normal time (when there is no power failure) does not require time and labor for manual operation,
It can be easily opened and closed, and can also be manually opened and closed in the event of a power outage, which has the effect of achieving the purpose of security.

Further, even if the fence body is tilted by the impact, the engagement between the rack and the pinion does not come off, and the fence body is not manually opened and closed in an emergency.

[0046]

[Brief description of the drawings]

FIG. 1 is a front view showing the overall configuration of a vehicle entry blocking fence according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a right side view of FIG. 1;

4 is a partially omitted cross-sectional view taken along the line AA of FIG. 2 showing the fence main body driving mechanism and its vicinity.

FIG. 5 is a partially omitted cross-sectional view taken along the line BB of FIG. 1 showing a fence main body driving mechanism.

6 is a partially omitted cross-sectional view showing a state where the fence main body drive mechanism of FIG. 5 is tilted.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fence main body 3 Vehicle passage 5 Rack 7 Fence main body drive mechanism 7a Output rotating shaft 7b Electric motor 8 Hydraulic jack (Rack / pinion meshing manual release mechanism) 9 Pinion

Claims (3)

[Claims] 1. A fence main body (1) having a width sufficient to at least block a vehicle passage (3), and capable of opening and closing in a longitudinal direction orthogonal to the vehicle passage (3), and a fence main body (1). And a pinion (9) fixed to an output rotary shaft (7a) interlocking with the electric motor (7b) using at least the electric motor (7b) as a power source. A fence body drive mechanism (7) that meshes with the rack (5) and that opens and closes the fence body (1) via the rack (5) by the rotation of an electric motor (7b); (7) a manual release mechanism (8) for moving the pinion (9) from the rack (5) by moving at least a part of the rack and pinion (9). By operating the mechanism (8), Click (5) and the pinion (9) forcibly disengaged in the vehicle entrance block fence, wherein a fence body (1) is freely manual opening and closing movement. 2. The rack (5) according to claim 1, characterized in that the rack (5) is fixed to the fence body (1) with the tooth tip facing upward and meshes with a pinion (9) located above the rack body. Fence to prevent vehicle entry. 3. The manual release mechanism for rack and pinion engagement
A hydraulic jack (8) or a screw jack is provided, and a part of the fence body drive mechanism (7) is tilted by manual operation of the hydraulic jack (8) or the screw jack, and the pinion (9) is moved to the rack (5). The vehicle entry-prevention fence according to claim 1, wherein the fence is lifted until the vehicle is separated from the vehicle.