JPH0715812U - Buried fence post - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a buried fence post that can be easily pulled out to the ground without labor by light work by remote control. [Structure] A column body 3 is slidably housed in a hollow cylinder 1 vertically embedded in the ground, and a fluid pressure cylinder 8 for projecting the column body 3 to the ground is provided in the hollow cylinder 1. A fluid pressure is applied to the fluid pressure cylinder 8 by remote control.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fence post provided on the ground to prevent the entry of automobiles, etc. More specifically, it is an embedded structure that allows cars and people to pass freely by immersing it in the ground when not needed. About the fence post.

[0002]

[Prior art]

 Buried pillars generally have a hollow cylinder vertically embedded in the ground, and the pillars slidably housed in the hollow cylinder are pulled out to the ground as needed to prevent intrusion of cars and people. It is configured so as to prevent it (Japanese Utility Model Publication No. 58-51210, etc.). Recently, such buried fences have been widely used in entrances of public places such as shrines, schools, parks, and parking lots of large-scale retail stores. As the number of automobiles increases, depending on the time of day, it is necessary to block or permit the intrusion of automobiles, bicycles, etc., so that fixed fence posts are no longer useful. Therefore, in recent years, buried fences of this kind have been greatly appreciated.

[0003]

[Problems to be solved by the device]

 However, according to the conventional buried fence pillar, when pulling out the pillar body to the ground, the ring provided at the upper end of the pillar body had to be reached and lifted. However, the pillar was made of metal and weighed a great deal, so it was able to respond to the elderly. Then, when many pillars had to be pulled out, it became a considerable labor for adults. Moreover, since the worker has to work in the middle waist, there are problems that the worker is likely to hurt his back.

The present invention solves the above problems, and an object of the present invention is to provide an embedded fence post in which the post can be easily pulled out to the ground by light work by remote control.

[0005]

[Means for Solving the Problems] An embedded fence post according to the present invention stores a column body in a hollow cylinder vertically buried in the ground in a slidable manner, and the column body is placed on the ground. It is characterized in that a fluid pressure cylinder for projecting movement is provided in the hollow cylinder, and fluid pressure is applied to the fluid pressure cylinder by remote control. The term "fluid pressure" as used herein refers to the pressure generated by a fluid such as oil, water, or air, and such fluid pressure is applied to the operating unit and fluid pressure so that fluid pressure is applied to the fluid pressure cylinder by remote control. The cylinder is connected by piping.

[0006]

[Action]

 When the fluid pressure applied to the fluid pressure cylinder is changed by remote control from the operation part, the height of the column changes according to the change. If the fluid pressure rises, the pillar projects from the ground to the ground. Even if there are multiple columns, the same fluid pressure can be transmitted because each column is connected to the operating part by a pressure-propagating fluid such as oil. Can stand upright. On the other hand, when the fluid pressure decreases, the piston shaft descends, and the column is stored underground. The above operation requires almost no effort because a fluid transportation device such as a hydraulic pump is used.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail based on embodiments. (1) Embodiment 1 FIGS. 1 to 3 show an embodiment of a buried type fence post according to the present invention. Fig. 1 is a vertical cross-sectional view of the buried fence column, Fig. 2 is a hydraulic circuit diagram of the buried fence column, and Fig. 3 is a perspective view showing the usage state of the buried fence column. Reference numeral 1 is a hollow cylindrical hollow cylinder made of vinyl chloride. A flange 2 made of stainless steel is integrally connected to the outer periphery of the upper end opening edge of the hollow cylinder 1. The hollow cylinder 1 is vertically embedded in the ground so that only the flange 2 appears on the ground. Reference numeral 3 denotes a hollow cylindrical stainless steel column body slidably housed in the hollow cylinder 1. The upper end of the column 3 is closed by a disc-shaped cap 4. Through holes 5, 5 are opened in the cap 4, and both ends of the U-shaped handle fitting 6 are loosely inserted into the through holes 5, 5. At both ends of the handle fitting 6, retaining pieces 7, 7 having a larger diameter than the through holes 5, 5 are formed.

Reference numeral 8 denotes a fluid pressure cylinder vertically supported at the center of the inner bottom of the hollow cylinder 1 via a universal joint 9. The tip of the piston shaft 10 of the fluid pressure cylinder 8 is connected to the inner surface of the cap 4 of the columnar body 3. Reference numeral 11 is a fluid pressure pipe which is led out from the lower port 12 of the fluid pressure cylinder 8 and is piped through the ground to the operation portion.

In this way, when fluid pressure such as hydraulic pressure and pneumatic pressure is applied to the fluid pressure cylinder 8 through the fluid pressure pipe 11 from the operation portion and the piston shaft 10 is extended, the columnar body 3 moves to the position shown in FIG. As shown by the broken line, the hollow cylinder 1 is extruded and protrudes to the ground. In addition, the universal joint 9 is provided so that the column body 3 can be pushed out smoothly by the self-aligning function even if the column body 3 or the like is deformed and the shaft center is deformed. It is included.

FIG. 2 shows a hydraulic circuit that is provided with a plurality of such embedded fence posts and can be operated by remote control. This hydraulic circuit allows a first group of four fences 13a to 13d and a second group of three fences 14a to 14c to be operated separately. Two series of fluid pressure pipes 11a and 11b are separately arranged from the operation section 15 to the fence posts 13a to 13d and 14a to 14c of each group.

The operation unit 15 has a piping configuration as shown in FIG. Here, the hydraulic pump 17 is driven by the motor 16. When the hydraulic pump 17 operates, the hydraulic oil is pumped from the oil tank 18 to the operation valves 20a and 20b via the check valve 19.

Here, these operation valves 20a and 20b are connected to the fluid pressure pipes 11a and 11b on their secondary sides. Therefore, when the operation valve 20a is opened, the hydraulic oil is pressure-fed to the fences 13a to 13d through the fluid pressure pipe 11a, and the pillars 3 of the fences 13a to 13d are simultaneously projected to the ground. Further, when the operation valve 20b is opened, the hydraulic oil is pressure-fed to the fences 14a to 14c through the fluid pressure pipe 11b, and the pillars 3 of the fences 14a to 14c are simultaneously projected to the ground. As described above, by simply operating the operation valves 20a and 20b of the operation unit 15, it becomes possible to immediately project a large number of pillars at the same time by an operation from a distance. The operation valves 20a, 20b and free cocks 22a, 22b described later may be electromagnetically actuated valves.

As shown in the above hydraulic circuit diagram, when a large number of pillars 3, 3, ... Are required, these are grouped as appropriate and the fluid pressure piping 11, the operation valve 20, etc. are provided for each group. , Only the pillars 3, 3 ... Required for the operation of each group can be simultaneously projected by a simple operation. As a result, the operability is significantly improved compared to the conventional buried fence. In FIG. 3, the chain 23 is passed through the handle fitting 6 of the pillar 3 thus projected. Indicates a situation where it is functioning as a fence that blocks the entry of cars and people.

By the way, the fluid pressure pipes 11a and 11b are also connected to the oil tank 18 through free cocks 22a and 22b (FIG. 2). Therefore, the cocks 22a and 22b allow the fluid pressure cylinder 8 to communicate with the oil tank 18 and allow the column 3 to move up and down freely. When the free cock 22a is opened, the hydraulic pressure of the fluid pressure pipe 11a drops, so that the pillar body 3 of the fence pillars 13a to 13d sinks by its own weight or by pushing by hand. Similarly, the pillar body 3 of the fence pillars 14a to 14c is operated by the free cock 22b. On the other hand, if the free cocks 22a and 22b are opened even when a power failure occurs, the pillar body can be pulled out by hand without starting the motor 16.

The present invention is not limited to the one shown in the above embodiment, but can be variously modified within the scope of the present invention depending on the purpose and application. For example, by providing a coil spring for urging the piston shaft 10 in the direction of contracting it in the fluid pressure cylinder 8, it is possible to make the sinking motion of the column body smooth. Further, an upper port (not shown) is provided in the upper part of the fluid pressure cylinder 8 so that the hydraulic pressure can be applied from the upper part of the piston, and the design of the hydraulic circuit is changed so that the pillar 3 can be forcibly settled. May be. However, in that case, the fluid pressure piping to each of the fences is required twice, which increases the cost accordingly. Further, in order to operate the fluid pressure cylinder 8, it is of course possible to use pneumatic pressure instead of hydraulic pressure as shown in the embodiment. The hydraulic pump 17 may be a foot-operated type instead of the motor-driven type as in the embodiment, and the hydraulic pressure may act on the fluid pressure cylinder 8 by applying weight to the pedal. If the pressure of the existing tap water is used to operate the fluid pressure cylinder 8, the operation can be performed without providing a hydraulic pressure source or an air pressure source, so that the cost can be further reduced. Further, like a so-called ram cylinder, the column body 3 in the hollow cylinder 1 may be configured so that the fluid pressure is directly applied thereto, and the fluid pressure cylinder may be replaced.

[0016]

[Effect of device]

 As described above, the embedded fence post according to the present invention allows the column body to be immediately projected from the ground simply by operating the fluid pressure applied to the fluid pressure cylinder at the operation portion, and moreover, a large number of columns are provided. This makes it possible to pull out the body easily, which contributes to a great reduction in labor and has an excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embedded fence post according to the present invention.

FIG. 2 is a hydraulic circuit diagram of an embedded fence post according to the present invention.

FIG. 3 is a perspective view showing a usage state of a buried fence.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow cylinder 3 Column body 4 Cap 8 Fluid pressure cylinder 9 Universal joint 10 Piston shaft 11 Fluid pressure piping 15 Operation part 16 Motor 17 Hydraulic pump 18 Oil tank 20a, 20b Operation valve 22a, 22b Free cock

Claims (1)

[Scope of utility model registration request] 1. A hollow cylinder vertically buried in the ground,
A fluid pressure cylinder for slidably accommodating the column body and projecting the column body to the ground is provided in the hollow cylinder, and fluid pressure is applied to the fluid pressure cylinder by remote control. The feature is a buried fence pillar.