JP2002364277A - Chain gate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent mistaken passing of a motor vehicle or the like through the gate and greatly exhibit a psychological suppressing effect for blocking their invasion. SOLUTION: A first weight 5 and a second weight 6 lighter than the first one for giving a tension to each of chains 4a and 4b by applying loads are arranged in a liftable manner in the first gate column 2 fixing the one end of the chains 4a and 4b the second gate column 3 equipped with a lifting mechanism 7 for pulling in or sending out the chains 4a and 4b; an arrangement relation between the first weight 5 and the second weight 6 is made reverse each other between the first chain 4a and the second chain 4b; and when tensioning each of chains 4a and 4b by pulling to the second gate column 3, each of the chains 4a and 4b are moved in such a manner that the second weight 6 mutually arranged at the opposite side is first raised and after it reached the rising end, the chains 4a and 4b are moved so as to raise the first weight 6, and the first and second chains 4a and 4b are intersected and tensioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a chain gate. More specifically, the present invention changes the height of the chain stretched between a pair of gate posts, allows the chain to lie on the ground, and restricts the passage of pedestrians and vehicles by stretching the chain at a high position. The present invention relates to an improvement in the structure of a chain gate that switches between a closed state and a closed state.

[0002]

2. Description of the Related Art Conventionally, as a chain gate, a chain stretched between a pair of gate pillars installed at an entrance of a garage or a traffic path is raised and lowered to switch between a traffic permitting state and a traffic blocking state. For example, actual fairness 2-159
A structure as disclosed in JP-A-65-65 is known. This chain gate, as shown in FIG.
A chain 110 longer than these spaces (slightly longer than the length obtained by adding the desired chain tension height to the space between the gate pillars 101 and 102) is provided between the first pillar 101 and the second pillar 102. Attach it at both ends and connect the second
The chain 110 is lifted by a lifting mechanism 103 incorporated therein to change the tension of the chain 110 to switch between a traffic permitting state and a traffic blocking state.

In this chain gate, the lifting mechanism 1
03 is a pulley 10 that moves up and down along the second pillar 102.
4 and a hoisting drum 105 for hoisting a wire 107 supporting the pulley 104 to raise and lower the pulley 104
And a motor 10 for rotating the winding drum 105
6 is lifted and lowered while the chain 110 is wound around the pulley 104 so that the second
The support height of the chain 110 on the second side can be changed. In addition, the first portal pillar 101 is provided with a weight 109 that can be freely raised and lowered, and is provided so that the weight is placed on the chain 110 so that the weight of the weight can tension the chain 110 horizontally without looseness. . Therefore,
The chain 110 is stretched horizontally by the weight of the weight 109, and when the lifting mechanism 103 is driven to move the pulley 104 up and down, the chain 110 moves by an amount equal to the amount of lifting and lowering, and the chain 110 is stretched horizontally. The height of the part that goes is up and down. Further, since the tension is always applied to the chain 109 by the weight 108, the tension is maintained at a constant value regardless of the height of the chain 109.

[0004]

However, since this chain gate raises and lowers one horizontally stretched chain, it is easy to overlook the chain and the chain may be cut off due to accidental passage of vehicles and the like. In addition, there is a problem that the psychological deterrent effect of preventing intrusion is inferior.

Accordingly, the present invention provides a chain gate that is easily noticeable when a chain is stretched to function as a gate, prevents a vehicle or the like from accidentally passing, and can exert a psychological deterrent effect of preventing entry. The purpose is to do.

[0006]

In order to achieve the above object, the invention according to claim 1 includes a first gate post for fixing one end of a chain and an elevating mechanism for pulling in and sending out the other end of the chain. In a chain gate in which a chain is moved between a permissible state and a closed state by moving the chain and changing its tension between the second gate and the chain, the chain is composed of at least first and second two chains. A first weight for applying a load to each chain to apply tension and a second weight lighter than the first weight are provided on each of the first and second portals so as to be vertically movable, and the first chain and the first The arrangement relationship between the first weight and the second weight between the second chain and the second chain is opposite to each other, and when each chain is pulled into the second pillar and stretched, it is located at an opposite position to each other. Arrangement This raises the second weight is so moving each chain as the first weight is increased after reaching the upper end, stretched by intersecting the first and second chains are.

[0007] Therefore, the chain gate has an X-shape in a closed state, and is more easily recognized visually than a case where one chain is stretched horizontally. In addition, by adjusting the position at which the movable support member is stopped, it is possible to freely set a crossed shape and a stretched chain. Also, in the case where a passerby or the like is accidentally hooked on a chain in a closed state, the heavy first weight that does not reach the upper end of the gate post is lifted, and the chain is pulled out by that much and the impact is caused. Can be alleviated. Furthermore,
Also when switching to the traffic permitting state, the side on which the first weight is applied first reaches the bottom, and then the side on which the second weight is applied is lowered while further extending the chain. Lying on the ground with a chain stretched between the gate posts.

According to a second aspect of the present invention, there is provided the chain gate according to the first aspect, wherein the elevating mechanism supports the first and second chains and determines a position where the chain is drawn into the second gate post. Between the fixed support member and an end of each chain secured to the second portal post.
A movable support member that adjusts the length of each chain by winding the chain up and down, a feed mechanism that moves the movable support member up and down, and a drive motor. In this case, the chain is sent out or retracted from the column more than the moving amount of the movable support member, so that the structure of the moving mechanism can be made compact.

According to a third aspect of the present invention, in the chain gate of the first aspect, the lifting mechanism comprises a chain wheel around which the first and second chains are wound and a drive motor for rotating the chain wheel. Features. In this case, since the chain is directly driven, the required length can be moved irrespective of the chain length and the fixed position, so that adjustment work at the construction site is not required and the number of parts can be reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on an example of an embodiment shown in the drawings.

1 to 5 show one embodiment of the chain gate of the present invention. The chain gate 1 has at least two of the first chain 4a and the second chain 4b as one.
A chain is formed between the first gate 2 that fixes one end of each of the chains 4a and 4b and the second gate 3 that includes an elevating mechanism 7 that draws in and sends out the other end of each chain 4a and 4b. By moving the 4a and 4b to change the tension height, the vehicle is switched between a traffic permitting state (traffic permitting position) permitting traffic of vehicles and the like and a traffic restricting state (traffic stop position) for stopping traffic of vehicles and the like. .

Here, the chain forms a set with at least two of the first chain 4a and the second chain 4b,
A first weight 5 that applies tension to each of the chains 4a and 4b to apply tension and a second weight 6 that is lighter than the first weight 5
And the second gate columns 2 and 3 are provided so as to be able to move up and down, respectively, and are provided so as to be stretched between the two gate columns 2 and 3 without slack by the tension applied by the weights 5 and 6. Furthermore, the arrangement relationship between the first weight 5 and the second weight 6 is, for example, the first pillar 2 so that the first chain 4a and the second chain 4b have the opposite arrangement relationship. In the first chain 4a, the second weight 6 and the second chain 4b have the first weight 5, and in the second pillar 3, the first chain 4a has the first weight 5 and the second weight 5. The second weights 6 are arranged on the chains 4b. Therefore, when the chains 4a, 4b are pulled into the second pillar 3 and stretched, the chains 4a, 4b first rise from the light second weights 6, which are arranged at positions opposite to each other, and after they reach the rising end. Each of the chains 4a and 4b moves so that the first weight 5 which is heavier than the second weight 6 rises, and moves up and down so that the first chain 4a and the second chain 4b intersect. Is done. That is, in the present embodiment, one chain 4a and the first and second weights 5, 6 disposed at both ends thereof (the first and second portal columns 2 and 3) and the lifting mechanism for moving the chain 4a. 7, one set of chain devices is further constituted, and the first chain device and another chain device having the opposite weight relationship between the weights are arranged one behind the other to form the first and second portal columns 2, 3. I am trying to deploy.

The first gate column 2 and the second gate column 3 are installed at a necessary distance, for example, a distance that allows a pedestrian or a vehicle to pass through. It is a hollow column that houses 4a and 4b, and has a vertically long hole (shown in FIG. 6 and FIG. 9 showing the hole 2a of the second gate post 3) on the side surface facing each other for passing the chain 4.

[0014] The second pillar 3 is composed of chains 4a, 4b.
And a lifting mechanism 7 for stretching or loosening. The elevating mechanism 7 pulls the other ends of the chains 4a and 4b into the second portal 3 and sends them out to the first portal 2 and directly raises and lowers the ends of the chains 4a and 4b.
Alternatively, the length of the chain accommodated in the second pillar 3 is adjusted by raising and lowering the chain between the end of the chain fixed to the second pillar 3 and a fixed support member that determines the chain tension position. I have to. For example, FIG.
As shown in FIG. 3, fixed support members 10a and 10b that support the first and second chains 4a and 4b to determine the position of being pulled into the second portal column 3, and the fixed support members 10a and 10b.
Movable support members 11a, 11b for adjusting the length of each chain by winding up and down each chain 4a, 4b between the end of each chain 4a, 4b and the end fixed to the second portal column 3; , A feed mechanism 8 comprising a pair of screws for raising and lowering the movable support members 11 a and 11 b and a drive motor 9
It is composed of Here, the fixed supporting members 10a, 10
b and the movable support members 11a, 11b
Since it is for changing the direction of the chain 4b or applying a force to the chains 4a and 4b, it may be a simple rod or a hook, but it can reduce the friction between the chains 4a and 4b. The use of a possible pulley is preferred. The fixed support members 10a and 10b are provided on the upper part of the second pillar 3, and the passing chain 4a is wrapped around. The movable support members 11a and 11b are provided on the second gate post 3 so as to be able to move up and down, and the other end of the chain 4a and the fixed support member 1
0a, 10b, and is supported by a chain 4a. In the case of the present embodiment, the movable supporting members 11a, 1
Since the lifting / lowering distance of 1b only needs to be about half of the feeding amount (or pulling-in amount) of the chain 4a, it is advantageous for downsizing the space.

In this embodiment, the pulleys 11a and 11b, which are movable support members, are mounted on a common elevating base and are moved up and down by one feed screw 8 and one motor 9 at the same time. The invention is not limited thereto, and a lifting / lowering mechanism 7 for each chain having a dedicated motor and a feed screw may be provided, and these may be driven synchronously or completely separately. The ends of the chains 4a, 4b are not necessarily required to be fixed to the second pillar 3. Depending on the case, the ends of the chains 4a, 4b may be fixed by the lifting mechanism 7 itself, or the chains may be fixed. May be fixed. For example, an elevating mechanism composed of a chain wheel and a drive motor for winding the first and second chains 4a and 4b without slipping is adopted, and each chain 4
The a and 4b may be wound or sent out, and the rotation of the chain wheel may be fixed at that position. Further, the lifting mechanism 7 is not limited to a mechanism using a feed screw, and any mechanism capable of realizing the lifting operation such as a combination of a wire for lifting the lifting base and a pulley for winding the same can be employed, and the power is also particularly electric. Is not limited to
It is also possible to use a manual winding type in which a feed screw is rotated using a crank lever or the like. In addition, in FIGS. 1 to 5, the widths of the two gate columns 2 and 3 are greatly different for convenience of showing the internal structure, but it is a matter of course that the gate columns may be designed as the same size.

The chains 4a, 4b are necessary when the height of the two gate posts 2, 3 is added to at least the distance between the first gate post 2 and the second gate post 3, and the elevating mechanism 7 is located at the uppermost position. (The length from the other end of the chain to the hole 2a of the gate post 3), and one end of the first gate post 2
In addition, the other end is directly or indirectly fixed to the second gate post 3, respectively. For example, in the present embodiment, both the chains 4a and 4b have one end fixed to the upper part of the first portal 2 and the other end fixed to the upper part of the second portal 3 via a hook or the like. In the present embodiment, one end and the other end of the chain 4 are fixed to each of the portal columns 2 and 3, but it is not necessary to fix the chain end in a strict sense, and the chain 4 is fixed or fixed to each of the portal columns 2 and 3. Is treated as the end of the chain 4. In the chain 4, a portion stretched between the two pillars 2 and 3 is a stretch portion.

In the present embodiment, the first and second weights 5, 6 are arranged so as to be placed on the respective chains 4a, 4b, and are respectively disposed on the first and second chains 4a, 4b. It is provided so as to give a predetermined tension by adding its own weight.

The weights 5 and 6 can be supported by the first and second portal columns 2 and 3 so as to be movable up and down, for example, by guide shafts provided on the portal columns 2 and 3 respectively. The means for guiding in the vertical direction is not particularly limited to the guide shaft. Each of the weights 5, 6 is always supported by any part of the chains 4a, 4b, but the relative position is variable by being provided slidably with the chain 4a. Although the shape of the weights 5 and 6 is not particularly limited, it is preferable to adopt a shape and material that reduces friction between the chains 4a and 4b and enables smooth sliding.
4b is provided with a roller, a pulley, etc. that can roll on the upper surface 4b. In addition, the rising position of the first weight 5, that is, each chain 4
The crossing angles (crossing shapes) of the chains 4a, 4b
The desired state is set by previously determining the stroke amount b or by regulating the rising end of the first weight 5 with a stopper (not shown) or the like.

The chain gate 1 constructed as described above
Will be described. When the traffic shown in FIG. 2 is permitted, the elevating mechanism 7 moves up to the uppermost end and feeds out both chains 4a and 4b as much as possible, so that both chains 4a and 4b lie on the ground (floor surface) or in a groove, and the vehicle and Do not obstruct the passage of passers-by. The vehicle or the like can pass between the two pillars 2 and 3 by stepping on or straddling the chains 4a and 4b.

To switch to the closed state, the motor 9
Is driven to lower the movable support members 11a and 11b. Then, the chains 4a and 4b are pulled into the second pillar 3 as shown in FIG. At this time, the first chain 4a is lifted from the side of the first portal 2 and the second chain 4b is lifted from the side of the second portal 3. Therefore, both chains 4a and 4b are alternately slanted and rise while crossing the X shape as shown.

Then, as shown in FIG.
When the second weights 6 and 6 of a and 4b reach the rising end, the first weights 5 and 5 which are heavier than the second weights 6 and 6 are respectively raised and moved to a predetermined stroke (height). Keep moving until you reach. Here, the chains 4a and 4b are tightly stretched in the crossed state (X-shape) by previously defining the stroke amount or by regulating the rising end of the first weight 5 with a stopper or the like. To form a gate. Incidentally, the closed state in the present embodiment is the state shown in FIG. 5. In some cases, the amount of extension of each of the chains 4 a and 4 b can be arbitrarily controlled, so that various high levels including the state shown in FIG. An X-shaped gate having a size and a size can be formed.

On the other hand, when the state is switched from the closed state to the permitted state, the operation is reversed. That is, the movable support members 11a and 11b are raised and the chain 4
When a and 4b are sent out from the second portal 3, the first weights 5, 5 first descend, and when they reach the lower ends of the portals 2, 3, the second weights 6, 6 subsequently descend. Eventually, the chains 4a and 4b are completely laid on the ground or the groove, and are in a traffic permitting state.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the first chain 4a and the second chain 4b are provided between a pair of portal columns 2 and 3, but in some cases, a portal is provided for each chain, and between the two pairs of portal columns. Sometimes two chains are stretched. In this embodiment, the first chain 4a and the second chain 4b are stretched so as to intersect with each other. However, in some cases, three chains constitute one set or two sets ( Four (or more) chains may be arranged in front and rear and raised and lowered so as to cross each other. Further, the term “chain” used in this specification is used to include a cord-like object that can function as a gate, such as a wire or a rope, and a chain (chain) in a strict sense. ) Is not limited. The chain 4 is not limited to metal, but may be plastic.

[0024]

FIG. 6 to FIG. 9 show an embodiment of the chain gate 1. FIG.
Shown in The first and second gate pillars 2 and 3 of the chain gate 1 are formed by closing both ends of a cylindrical pillar body 20 with disc-shaped end caps 21 and 22, and opened to both end caps 21 and 22. It is provided so as to support the guide shaft 13 and the feed screw 24 using a support hole (not shown). The guide shaft 13 is used to hold the first and second weights 5 and 6 slidably in the vertical direction, and a part of the guide shaft 13 and the feed screw 24 is used to move the lift base as a movable support member. 14 is provided so as to be able to move up and down.

The lifting mechanism 7 includes pulleys 10a and 10b as fixed support members fixed to the upper part of the second pillar 3.
And each chain 4 passing through the pulleys 10a and 10b
a fixed pulleys 25a, 25b for guiding the a, 4b to the lower end of the second gate post 3 and turning the upper direction again; an elevating base 14 as a movable support member for supporting and elevating the ends of the chains 4a, 4b; It comprises a feed screw 24 for raising and lowering the lifting base 14 and a drive motor (not shown).
The elevating base 14 is fitted to the feed screw 24 to form a screw pair and is also fitted to the guide shaft 13, so that the elevating base 14 moves up and down along the guide shaft 13 by rotation of the feed screw 24. The elevating base 14 is provided with bolts 12a and 12b with hooks, and the ends of the first and second chains 4a and 4b are respectively attached thereto.
Therefore, the elevation base 1 is rotated by the rotation of the feed screw 24.
4, the chains 4a, 4b can be simultaneously drawn into or out of the gate post.

The pulleys 25a and 25b are rotatably supported by pins 16 and retaining rings 17 on a gantry 23 mounted on the end cap 22. Also, as shown in FIG. 9, the fixed pulleys 10a and 10b are similarly rotatably mounted on the upper portion of the second portal column 3 coaxially with pins 18 and retaining rings 19. Reference numeral 15 in the drawing is a hole having a size that allows the guide shaft 13 and the weights 5, 6 or the lifting base 14 to be slidably fitted.

The first weight 5 and the second weight 6 are both slidably fitted to the two guide shafts 13,
Guide shaft 13 using the force when the chain is stretched
It is supported so that it can move up and down along. In other words, the first
The second weights 5 and 6 are supported by the guide shaft 13 so as to always apply a pressing force to the chains 4a and 4b. As shown in FIGS. 7 and 9, the surface arrangement angle of the first and second weights 5, 6 in sliding contact with the chains 4a, 4b is curved or spherical, or rounded. Care is taken to reduce sliding friction between the two. In addition, the first of the first pillar 2
The same applies to the support structure, shape, and the like of the weight 5 and the second weight 6, and a description thereof will be omitted.

In this embodiment, the elevating base 14 is guided vertically by the guide shaft 13, but the guide means is not limited to this. For example, although not particularly shown, an extruded hollow bar made of aluminum having a groove formed in the inner wall is used as a gate post, and the elevation base 14 and the first and second weights 5 and 6 are guided by the inner wall groove. You may do it.

According to the chain gate configured as described above, the first and second chains 4a, 4a, 4a,
As the first weight 5 and the second weight 6 are sequentially moved up and down along the guide shaft 13, the two chains 4a and 4b are raised or lowered in a state of intersecting in an X-shape. . Therefore, when traffic is permitted, the elevating base 14 descends to the lowermost end and sends out the chains 4a and 4b as much as possible to lie on the floor or the like, so that vehicles and passers-by are not obstructed. On the other hand, in the closed state, when the lifting base 14 rises to the upper end and pulls in the chains 4a, 4b by a predetermined amount, the lighter weight / second weight 6 of each chain 4a, 4b rests on the rising end. When the side on which the heavier first weight 5 rests reaches halfway, it reaches the hoisting stroke (height) of the chain, so that the two chains 4a, 4b are stretched in a state of crossing the X shape. Can be

[0030]

As is clear from the above description, according to the chain gate of the first aspect, at least two chains are stretched crossing each other when the road is closed, so that one chain can be set horizontally. It is more conspicuous and easier to see than when it is stretched. For this reason, it is possible to prevent a vehicle or the like from passing by mistake and to exert a psychological deterrent effect of preventing intrusion. Moreover, since the gate is composed of at least two chains, even if one chain is broken, the function of the gate is maintained by the remaining chains.

In addition, when the state is switched to the traffic permitting state, the portion where the first weight and the second weight are applied successively lands while the chain is extended, so that the space between the first gate post and the second gate post is obtained. Because the chain lays on the ground or the like with the chain stretched, the chain is less likely to undulate or overlap, and an excessive load is not applied when a passerby is caught on a foot or stepped on by a tire. Also, in the case where a passerby or the like is accidentally hooked on a chain in a closed state, the chain is pulled out by that amount by lifting the heavier first weight, thereby reducing the impact. No unexpected impact is required.

Further, by adjusting the position at which the movable support member is stopped, it is possible to freely set a stretched or crossed chain shape.

According to the chain gate of the second aspect,
Since the moving distance of the movable support member is only about half of the amount of the chain sent or retracted, it is advantageous for reducing the size of the space. Also, according to this chain gate, multiple chains can be raised and lowered simultaneously by the same amount,
As compared with the case where chains are stretched one by one, it is possible to easily and quickly switch between the closed state and the allowed state.

According to the third aspect of the present invention, the length of the chain accommodated in the second gate can be freely set without fixing the end of the chain, so that the distance between the gates can be freely changed and set on site. . In addition, the number of parts constituting the lifting mechanism can be reduced to simplify the structure and reduce the cost. In addition, since the chain can be directly driven, there is little possibility that the operation of the operating portion and the sliding portion becomes unstable due to dust and rust.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a chain gate according to the present invention, which simply shows the structure and operation principle of the chain gate.

FIG. 2 is a schematic diagram showing a chain gate in a traffic permitting state.

FIG. 3 is a schematic diagram showing a state where a movable support member is pulled down from a state shown in FIG. 2 and a chain starts to ascend;

FIG. 4 is a schematic diagram showing a state where the movable support member is further pulled down from the state shown in FIG. 3, the second weight reaches the uppermost portion, and the chain crosses the maximum.

FIG. 5 is a schematic view showing a state where the movable support member is further pulled down from the state shown in FIG. 4 and the cross form of the chain is moved to the upper part of the pillar.

FIG. 6 is a plan view of a second pillar showing an embodiment of the present invention.

FIG. 7 is a partial front view showing a lower portion of a second gate post.

FIG. 8 is a partial left side view showing a lower portion of a second gate post.

FIG. 9 is a partial front view showing an upper part of a second gate post.

FIG. 10 is a schematic view of a conventional chain gate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain gate 2 1st pillar 3 2nd pillar 4a 1st chain 4b 2nd chain 5 1st weight 6 2nd weight 7 Elevating mechanism 8 Feeding mechanism 9 Motor 10a, 10b Fixed support member 11a, 11b Movable support member

Claims (3)

[Claims] The chain is moved between a first pillar for fixing one end of the chain and a second pillar having an elevating mechanism for pulling in and sending out the other end of the chain, and the tension of the chain is increased. In a chain gate which switches between a traffic permitting state and a traffic blocking state by changing the chain length, the chain is composed of at least a first and a second chain, and a first load is applied to each chain to apply a tension to each chain. A weight and a lighter second weight are provided on each of the first and second portals so as to be able to move up and down,
The first chain and the second chain have the opposite arrangement relationship between the first weight and the second weight, and each chain is drawn into the second pillar and stretched. When being bridged, the chains are raised from the second weights arranged at positions opposite to each other, and after reaching the rising end, each chain is moved so that the first weights are raised, and the first and second weights are moved. A chain gate, characterized by crossing chains. 2. The apparatus according to claim 1, wherein the lifting mechanism supports the first and second chains to determine a position where the first and second chains are to be drawn into the second pillar, and the second support of the fixed support member and each chain. A movable support member that adjusts the length of each chain by winding up and down the first and second chains between an end portion fixed to a gate post and a feed mechanism that raises and lowers the movable support member; The chain gate according to claim 1, comprising a drive motor. 3. The chain gate according to claim 1, wherein said lifting mechanism comprises a chain wheel around which said first and second chains are wound and a drive motor.