JP3583384B2 - Chain gate - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chain gate. More specifically, the present invention changes the height of a chain stretched between a pair of gate posts, restricts the passage of passers-by and vehicles by stretching the chain to the ground and allowing it to pass at a high position. The present invention relates to an improvement in a structure of a chain gate for switching between a closed state and a closed state.
[0002]
[Prior art]
Conventionally, as a chain gate in which a chain stretched between a pair of gate posts provided at an entrance such as a garage or a passageway is moved up and down to switch between a traffic permitting state and a traffic blocking state, for example, there is a conventional chain gate. A structure such as that disclosed in Japanese Patent No. 15965 is known. As shown in FIG. 10, this chain gate is longer than the distance between the first gate post 101 and the second gate post 102 (the desired chain tension is added to the distance between the gate posts 101 and 102). (Slightly longer than the length of the chain 110) is attached at both ends, and the middle of the chain 110 is lifted by an elevating mechanism 103 built in the second pillar 102 to change the height of the chain 110 so that the passage is permitted and the passage is blocked. And so on.
[0003]
In this chain gate, an elevating mechanism 103 includes a pulley 104 that moves up and down along the second portal 102, a hoist drum 105 that hoists a wire 107 supporting the pulley 104 to raise and lower the pulley 104, and a hoist drum 105. It is configured by a motor 106 to be rotated, and by raising and lowering the chain 110 around the pulley 104, the supporting height of the chain 110 on the side of the second portal 102 can be changed. In addition, the first gate post 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 a tension is applied to the chain 110 to horizontally and loosely tension the chain 110 with its weight. . Therefore, the chain 110 is stretched horizontally by the weight of the weight 109. When the lifting mechanism 103 is driven to raise and lower the pulley 104, the chain 110 moves by an amount equal to the lifting amount, and The height of the stretched part goes up and down. Further, since the tension is always applied to the chain 109 by the weight 108, the chain 109 is maintained at a constant tension state regardless of the height.
[0004]
[Problems to be solved by the invention]
However, since this chain gate raises and lowers one chain that is stretched horizontally, it is easy to overlook, and there is a danger that a vehicle or the like may accidentally pass through the chain and the chain may be cut, and also prevent entry of the chain in advance. There is a problem of poor psychological deterrent effect.
[0005]
Therefore, 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 passing by mistake, and can exert a psychological deterrent effect of preventing intrusion. Aim.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, the invention according to claim 1 is characterized in that a first portal that fixes one end of a chain and a second portal that includes an elevating mechanism that draws in or sends out the other end of the chain, In a chain gate in which a chain is moved to change between a permissible state and a closed state by changing its tension height, the chain includes at least two chains, a first chain and a second chain, and a load is applied to each chain. A first weight for applying tension and a second weight which is lighter than the first weight are provided on each of the first and second pillars so as to be vertically movable, and a first weight is provided between the first chain and the second chain. The arrangement relationship between the weights of the first and second weights is opposite to each other, and when each chain is pulled into the second pillar and stretched, it rises from the second weights located at opposite positions to each other. Let me Les moves the respective chain so that the first weight is increased after reaching the upper end, so that stretch by intersecting the first and second chain.
[0007]
Therefore, this 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 chain-stretched or crossed shape. In addition, even if 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, so that the chain is pulled out by that much and the impact is caused. Can be alleviated. Furthermore, 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 etc. with the chain stretched between the second gate post.
[0008]
According to a second aspect of the present invention, there is provided the chain gate according to the first aspect, wherein the lifting mechanism supports the first and second chains and determines a position to be drawn into the second gate post; A movable support member that adjusts the length of each chain by winding up and down the first and second chains between the fixed support member and an end portion fixed to the second gate post of each chain; It is characterized by comprising a feed mechanism for raising and lowering the support member and a drive motor. In this case, the chain is sent out or retracted from the column more than the amount of elevating the movable support member, so that the structure of the elevating mechanism can be made compact.
[0009]
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. . 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]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.
[0011]
1 to 5 show one embodiment of the chain gate of the present invention. The chain gate 1 includes at least two of a first chain 4a and a second chain 4b as a set, and a first portal post 2 for fixing one end of each chain 4a, 4b and the other end of each chain 4a, 4b. By moving the chains 4a and 4b to change the tension between the second pillar 3 and the second pillar 3 having a lifting mechanism 7 for pulling in and sending out the side, a traffic permitting state allowing a vehicle or the like to pass ( The switch is made between a traffic permitting position) and a traffic stop state (traffic stop position) for stopping traffic of vehicles and the like.
[0012]
Here, the chain forms a set of at least two of the first chain 4a and the second chain 4b, and a first weight 5 that applies tension to each of the chains 4a and 4b to apply tension, and A light second weight 6 is provided on each of the first and second gate columns 2 and 3 so as to be able to ascend and descend, respectively, so that the tension applied by these weights 5 and 6 can be stretched between the two gate columns 2 and 3 without slack. It is provided in. Further, 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, the second chain 4b is provided with the first weight 5, and in the second portal 3, the first chain 4a is provided with the first weight 5, the second weight 2. The second weights 6 are arranged on the chains 4b. Therefore, when each chain 4a, 4b is pulled into the second pillar 3 and is stretched, it first rises from the light second weight 6 arranged at the opposite position, and after it reaches 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 pillars 2 and 3) and the lifting mechanism for moving the chain 4a. 7, one set of chain devices is further constituted, and the other set of chain devices having the opposite weight relationship between the first chain device and the weight is placed in front of and behind the first and second portal columns 2, 3. I am trying to deploy.
[0013]
The first gate column 2 and the second gate column 3 are installed at a required distance, for example, a distance that allows a pedestrian or a vehicle to pass through. Each of the gate columns 2 and 3 has a chain 4a and 4b inside. And has a vertically long hole (shown in FIG. 6 and FIG. 9 showing a hole 2a of the second gate post 3) on the side surface facing each other.
[0014]
In addition, the second portal 3 is provided with an elevating mechanism 7 that stretches and loosens the chains 4a and 4b. The elevating mechanism 7 pulls the other end of the chains 4a, 4b into the second portal 3 or sends it out to the first portal 2, and directly raises or lowers the ends of the chains 4a, 4b. By raising and lowering the chain between the end of the chain fixed to the second pillar 3 and the fixed support member for determining the chain tension position, the length of the chain accommodated in the second pillar 3 is adjusted. ing. For example, as shown in FIG. 1, 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 3, and the fixed support members 10a and 10b Movable support members 11a and 11b for adjusting the lengths of the chains 4a and 4b by adjusting the lengths of the chains by winding the chains 4a and 4b up and down between the ends fixed to the second portal columns 3 of the chains 4a and 4b; It comprises a feed mechanism 8 composed of a pair of screws for raising and lowering the movable support members 11a and 11b, and a drive motor 9. Here, since the fixed support members 10a and 10b and the movable support members 11a and 11b are for changing the direction of the chains 4a and 4b and for applying a force to the chains 4a and 4b, they are merely rod-shaped objects or hooks. Although it may be shaped like a roller, it is preferable to use a rollable pulley that can reduce friction between the chains 4a and 4b. Further, the fixed support members 10a and 10b are provided on the upper part of the second gate post 3, and the passing chain 4a is wound therearound. The movable support members 11a and 11b are provided on the second portal column 3 so as to be able to move up and down, and are supported by the chain 4a between the other end of the chain 4a and the fixed support members 10a and 10b. In the case of the present embodiment, the vertical movement distance of the movable support members 11a and 11b is only about half of the feed amount (or retraction amount) of the chain 4a, which is advantageous for reducing the space.
[0015]
In the present embodiment, the pulleys 11a and 11b, which are movable support members, are mounted on a common elevating base and are simultaneously moved up and down by one feed screw 8 and one motor 9, but the invention is not limited to this. Instead, 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 and 4b are not necessarily required to be fixed to the second pillar 3. Depending on the case, the ends of the chains 4a and 4b may be fixed by the lifting mechanism 7 itself, or the chains may be fixed. May be fixed. For example, a lifting mechanism composed of a chain wheel and a drive motor that winds the first and second chains 4a and 4b without slipping is adopted, and the respective chains 4a and 4b are wound or fed out by a required amount. The rotation of the chain wheel may be fixed at the position. Further, the lifting mechanism 7 is not limited to a mechanism using a feed screw, and any mechanism capable of realizing a lifting operation, such as a combination of a wire for lifting a lifting base and a pulley for winding the same, can be employed. However, the present invention is not limited to this, and it is also possible to use a manual winding type in which the 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 obvious that the gate columns may be designed as the same size.
[0016]
The chains 4a and 4b have at least the distance between the first gate column 2 and the second gate column 3 plus the height of both gate columns 2 and 3, and the length required when the lifting mechanism 7 is located at the top. (The length from the other end of the chain to the hole 2a of the gate post 3), one end of which is directly or indirectly connected to the first gate post 2 and the other end of which is directly connected to the second gate post 3. Fixed. For example, in the present embodiment, both the chains 4a and 4b have one end fixed to the upper part of the first gate post 2 and the other end fixed to the upper part of the second gate post 3 via a hook or the like. In this embodiment, one end and the other end of the chain 4 are fixed to each of the portal columns 2 and 3. However, it is not necessary to fix the chain end in a strict sense. 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.
[0017]
In the present embodiment, the first and second weights 5 and 6 are arranged so as to be mounted on the respective chains 4a and 4b, and respectively weigh the first and second chains 4a and 4b. It is provided so as to apply a predetermined tension in addition thereto.
[0018]
The weights 5 and 6 can be supported by the first and second portal columns 2 and 3 so as to be able to move up and down, for example, by guide shafts and the like provided on the portal columns 2 and 3, respectively. The guide means 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. The shape of the weights 5 and 6 is not particularly limited, but it is preferable to adopt a shape and material that can reduce friction between the weights and the chains 4a and 4b so as to be able to slide smoothly, more preferably on the chains 4a and 4b. Rollers, pulleys, etc. that can roll the The rising position of the first weight 5, that is, the crossing angle (crossing shape) of each chain 4a, 4b can be determined by previously setting the stroke amount of each chain 4a, 4b or by determining the rising end of the first weight 5 A desired state is set by regulating with a stopper not shown.
[0019]
The operation of the chain gate 1 configured 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 both chains 4a and 4b as much as possible. Therefore, both chains 4a and 4b lie on the ground (floor surface) or in a groove, and the vehicle Does not hinder the passage of passers-by. A vehicle or the like can pass between the two pillars 2 and 3 by stepping on or straddling the chains 4a and 4b.
[0020]
To switch to the closed state, the motor 9 is driven to lower the movable support members 11a and 11b. Then, as shown in FIG. 3, the chains 4a and 4b are pulled into the second portal column 3. 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 in the figure.
[0021]
Then, as shown in FIG. 4, when the second weights 6, 6 of the chains 4a, 4b reach the rising end, the first weights 5, 5, which are heavier than the second weights 6, 6, respectively. While moving up, keep moving until a predetermined stroke (height) is reached. Here, the chains 4a and 4b are tightly stretched in a crossed state (X-shape) by defining the stroke amount in advance or restricting 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.
[0022]
On the other hand, when the state is switched from the closed state to the allowed state, the movement is reverse to the above. That is, when the movable supporting members 11a and 11b are raised and the chains 4a and 4b are sent out from the second portal 3, the first weights 5 and 5 are first lowered. As a result, the second weights 6 and 6 are lowered, and finally the chains 4a and 4b are completely laid on the ground or the groove to be in a traffic permitting state.
[0023]
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 gate columns 2 and 3, but in some cases, a gate column is provided for each chain, and between the two pairs of gate columns. Sometimes two chains are stretched. In the present 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 may be combined into 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]
【Example】
An example of the implementation of the chain gate 1 is shown in FIGS. 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 disk-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 first and second weights 5 and 6 are slidably held in the vertical direction using the guide shaft 13, and the lift base as a movable support member is used by using a part of the guide shaft 13 and the feed screw 24. 14 is provided so as to be able to move up and down.
[0025]
The elevating mechanism 7 pulls the pulleys 10a and 10b as fixed support members fixed to the upper part of the second gate post 3 and the chains 4a and 4b passing through the pulleys 10a and 10b to the lower end of the second gate post 3. Fixed pulleys 25a and 25b for guiding and turning upward again, an elevating base 14 as a movable support member for supporting and elevating the ends of the chains 4a and 4b, a feed screw 24 for elevating the elevating base 14, and a drive motor. (Not shown). The elevating base 14 is fitted with the feed screw 24 to form a screw pair and is also fitted with 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 lifting base 14 is moved up and down by the rotation of the feed screw 24, so that the chains 4a and 4b can be simultaneously drawn into or out of the gate post.
[0026]
The pulleys 25 a and 25 b are rotatably supported by a mount 23 mounted on the end cap 22 by pins 16 and retaining rings 17. 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 for slidably fitting the guide shaft 13 with the weights 5, 6 or the elevating base 14.
[0027]
Further, the first weight 5 and the second weight 6 are both slidably fitted to the two guide shafts 13 and can be moved up and down along the guide shafts 13 using the force when the chain is stretched. It is supported by. In other words, the first and second weights 5, 6 are supported by the guide shaft 13 so as to constantly apply a force to push down the chains 4a, 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. Note that the same applies to the support structure and the shape of the first weight 5 and the second weight 6 of the first gate post 2, and the description is omitted.
[0028]
In the present embodiment, the elevating base 14 is vertically guided by the guide shaft 13, but the guide means is not limited to this. For example, although not specifically shown, an extruded hollow rod 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.
[0029]
According to the chain gate configured as described above, the first and second chains 4a and 4b are pulled in or out by rotating the feed screw 24 to move the elevating base 14 up and down. 5 and the second weight 6 are moved up and down along the guide shaft 13 while the two chains 4a and 4b cross each other 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. And 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 an X-shape. Can be
[0030]
【The invention's effect】
As is apparent 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 is stretched horizontally. Is also noticeable. 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.
[0031]
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 feeding the chain, so that the chain is connected between the first and second gate posts. Since the chain is laid on the ground in a stretched state, 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 the chain in a closed state, the heavy first weight lifts up, so that the chain is pulled out by that much and the impact is reduced, so that the passerby etc. No unexpected impact is required.
[0032]
Further, by adjusting the position at which the movable support member is stopped, it is possible to freely set the shape of the chain and the cross shape.
[0033]
According to the chain gate according to the second aspect, the moving distance of the movable support member can be reduced to about half of the chain feed amount or the retracted amount, which is advantageous in reducing the space. Further, according to this chain gate, a plurality of chains can be moved up and down by the same amount at the same time, so that the traffic blocking state and the traffic permitting state can be switched easily and in a short time as compared with the case where the chains are stretched one by one.
[0034]
Further, according to the chain gate of the third aspect, the length of the chain housed on the second gate post side can be made free without fixing, so that the interval between the gate posts can be freely changed and set on site. In addition, the number of components constituting the lifting mechanism can be reduced, thereby simplifying the structure and reducing 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 one 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;
4 is a schematic diagram showing a state in which 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.
5 is a schematic view showing a state in which the movable support member is further pulled down from the state shown in FIG. 4 and the cross form of the chain has moved to the upper part of the pillar.
FIG. 6 is a plan view of a second pillar showing one 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 Motors 10a and 10b Fixed support members 11a and 11b Movable support member

Claims (3)

By moving the chain between a first portal that secures one end of the chain and a second portal that has an elevating mechanism that pulls in and sends out the other end of the chain, by changing the tension of the chain In a chain gate for switching between a traffic permitting state and a traffic blocking state, the chain is composed of at least two chains, a first weight that applies a load to each chain to apply tension, and a first weight. A light second weight is provided on each of the first and second pillars so as to be able to move up and down, respectively, and the first weight and the second weight are provided between the first chain and the second chain. The arrangement relationship is set to the opposite arrangement relationship, and when each chain is pulled into the second gate post and stretched, the chains are lifted from the second weights arranged at positions opposite to each other and reach the rising end. First moving each chain as the weight increases, the chain gate, wherein the tensioning by intersecting the first and second chain after. The elevating mechanism supports the first and second chains and determines a position to be pulled into the second portal, and a fixed support member fixed to the second portal of the fixed support and each chain. A movable support member that adjusts the length of each chain by winding up and down the first and second chains with the end of the first and second chains, a feed mechanism that drives the movable support member up and down, and a drive motor. The chain gate according to claim 1, wherein: The chain gate according to claim 1, wherein the lifting mechanism comprises a chain wheel around which the first and second chains are wound and a drive motor.

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