JPH1033745A - Curbstone elevating device for race track - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curbstone elevating device which can easily raise/lower a curbstone from/into the curbstone storage section. SOLUTION: This device is composed of a base body 15 fixed inside the curbstone storage section and a movable section 16 which is raised/lowersed inside the base body 15 and is fixed to the under side of a curbstone. A cam 25 is pivotally supported at an upper inside position of the base body 15, a pin 22 is provided at a lower inside position of the movable section 16, and openings 26 and 23 are provided at one side of the base body 15 and the movable section 16, respectively. When the movable section 16 is pulled upward to allow the pin 22 to be in contact with the cam 25 and the movable section 16 is lowered to allow the top edge of the opening 23 to be engaged with the cam 25, the movable section 16 can be kept at a specified level. On the other hand, when the movable section 16 is pulled upward to allow the pin 22 to be in contact with the cam 25 again to rotate the cam 25, the movable section 16 is lowered, the top edge of the opening 23 further rotates the cam 25, and the movable section 16 can be lowered to the bottom position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a curb structure for defining an innermost inner edge of an athletic track,
The present invention relates to an improvement of a curb excavation device for causing a curb to protrude and retract from a track surface.

[0002]

2. Description of the Related Art FIGS. 13 and 14 show a conventional curb structure. FIG.
FIG. 14 shows each of the constituent members, in which (A) is a front view of a member supporting the curb, (B) is a partial plan view, and (C) is a state in which the curb is supported. It is a front view.

As shown in these figures, this conventional curb structure is made of stainless steel metal, and has a curb 60 having a substantially rectangular cross section, and four curbs provided on the lower surface of the curb 60. And two storage angles 62 as curb storage portions for storing, supporting and fixing these from both sides, and the leg 61 of the curb 60 between the two storage angles 62. And a leg receiving portion 63 that directly supports.

The curb 60 is composed of two types, a straight one as shown in FIG. 13 which defines a straight part of the competition track and a curved one which defines a curved part of the competition track. . These linear and curved objects are different only in that the planar shape of the curb 60 is a straight line or a curved line, and other configurations are almost the same. The length in the longitudinal direction is about 2 meters each, and 200 curbs of these curbs are arranged along the inner peripheral edge of the athletic track to define the inner peripheral edge of the athletic track of 400 meters per round. A curb is formed. In FIG. 13, only the storage angle 62 on the far side is shown, and the storage angle on the near side is omitted, and the leg receiving portion 63 is shown cut off at its center. .

[0005] In the case of a track and field event such as a track event, this curb protrudes upward from the track surface by 50 mm in order to define the inner peripheral edge of the athletic track. In the case of a general stadium, not only is it used only for athletics, but the inner sphere of the track, that is, the field part, is used for other sports, such as soccer, rugby, ball games such as American football, etc. In that case, the curb that defines the inner periphery of the competition track is in the way, so that the curb is the same as the surface of the track and field (hereinafter referred to as the "ground"). So that the protruding curb is immersed in the curb storage part (storage angle 62) that supports it.

In the above-described conventional curb structure, the curb 60 is immersed in the storage angle 62 and the storage angle 6
2 As a curb emergence means for projecting from inside to outside,
The following structure is adopted. That is, the distal end fitting portion 64 of the leg portion 61 provided on the lower surface of the curb 60 is formed in a circular shape in cross section, and a fitting receiving portion 65 for receiving the distal fitting portion 64 is provided on the leg receiving portion 63. The fitting receiving portion 65 is formed in a tubular shape, and the tip fitting portion 64 of the leg 61 is fitted to the fitting receiving portion 65.
By projecting from the ground plane G by 50 mm upward as shown in FIG. On the other hand, the curb 60 is stored in the storage angle 62 by removing the distal end fitting portion 64 of the leg portion 61 from the fitting receiving portion 65 and displacing it in the longitudinal direction of the storage angle 62 and storing it in the storage angle 62. Thus, the upper surface of the curb 60 can form the same surface as the ground surface G.

Referring again to FIG. 13, by moving the curb 60 toward the storage angle 62 in the direction of the arrow P in the figure, the tip fitting portion 64 of the leg portion 61 is fitted with the leg receiving portion 63. By fitting with the mating portion 65, the curb 60 is supported at a certain height from the ground plane. On the other hand, arrow Q in the figure
By shifting the curb 60 downward in the direction of, that is, first, in the longitudinal direction of the storage angle 62,
The leg 61 is accommodated in the storage angle 62 without being fitted to the leg receiving portion 63, and at the same time, the curb 60 is immersed in the storage angle 62, and the upper surface of the curb 60 is
Is the same plane.

[0008]

In the above-mentioned conventional curb structure, in order to immerse the curb 60 into the storage angle 62, first, one of the curbs 60 is lifted upward, and its leg 61 is lifted. Remove it from the leg support 63 and replace it with the other short-length curb, and store it in the storage angle 6.
Immerse in 2. Next, the adjacent curb 60 is lifted upward and removed in the same manner, and is sequentially shifted in the longitudinal direction so as to be adjacent to the short-length curb, so that the leg 61 of the curb 60 is not fitted to the leg receiving portion 63. As a result, they are sequentially immersed in the storage angle 62.

On the other hand, in order to make the curbstone 60 protrude from the ground plane G, on the contrary, the curbstones 60 are lifted upward and shifted in the longitudinal direction, so that the four legs 61 on the lower surface of each curbstone 60 are provided. Are sequentially fitted to the leg receiving portions 63 inside the storage angle 62. Therefore, when the leg portion of the curb is removed and when the leg portion is fitted to the leg receiving portion, the operation becomes extremely difficult.

That is, even if the curb 60 is removed, the four legs 61 provided on the lower surface of the curb 60 may be fitted to the leg receiving portions 63 inside the storage angle 62. There is a problem that it takes time, and this operation must be performed for each of the 200 curbs. Furthermore, if there is little clearance between the distal end fitting portion 64 of the leg portion 61 and the fitting receiving portion 65 of the leg receiving portion 63, the curb 60 will not easily fall out due to frictional resistance and the like.
In addition, the fitting becomes difficult, and the attachment / detachment is not performed smoothly. Conversely, if the clearance is increased, even if the attachment and detachment become easy, the curb will be caused to sway laterally (in a direction perpendicular to the longitudinal direction) and rattle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a curb excavation / egress equipment which allows each curb to be immersed in or protruded from the curb storage part very easily and easily. That is, the curb is removed from the curb storage unit, the trouble of attaching and removing the curb is omitted at all, and the curb is always connected to the curb storage unit via the curb excavation device, and the curb is gripped by hand,
The curb can be stopped at a certain height position with just one touch by lifting it up and releasing the force, and the height position can be maintained. It is an object of the present invention to provide a curb excavation / retreat device which can immerse a curb in a curb storage section only by removing force.

[0012]

In order to solve the above-mentioned problems, a first object of the present invention is to move a curb defining a periphery of a competition track from a curb storage section buried in the track. In the curb excursion device, the curb excavation device 10 includes a base portion 15 and a movable portion 16 that moves up and down inside or outside the base portion 15, and the base portion 15 is fixed to the curb storage portion. Is fixed to the curb 1, the curb 1 also moves up and down with the up and down movement of the movable portion 16, and a cam 25 is pivotally supported at an appropriate position inside the base portion 15. The opening 2 for allowing the rotation of the cam 25 is provided below the
3 and 26 are provided on the side surfaces of the base portion 15 and the movable portion 16, and the projections such as the cam 25 and the pin 22 and the openings 23 and 2 are provided.
In cooperation with 6, the movable portion 16 stops at a fixed height position, can maintain that position, and can move up and down.

According to the first aspect, the curb 1 can be protruded and retracted from the curb storage portion while being connected to the curb storage portion, and can be stopped at a fixed height from the ground surface. Can be maintained.

According to a second aspect of the present invention, in the first aspect of the present invention, the cam 25 is provided with two concave portions 28 at point symmetrical positions on the outer peripheral portion thereof. The cam 25 is rotated by moving the movable portion 16 upward and abutting a projection 22 such as a pin 22 against the recess 28 of the cam 25. At the same time, the upward movement of the movable portion 16 is prevented, and the distal end portion 31 of the outer periphery of the cam 25 protrudes from the openings 23 and 26 to the outside.
The movable portion 16 can be stopped at a fixed height position by maintaining the upper end edge 32 of the cam 25 in contact with the other concave portion 28 of the cam 25, and the fixed height can be maintained. As a result, the projections such as the pins 22
To rotate the cam 25 again, and at the same time, prevent the upward movement of the cam 25, and then move the movable portion 16 downward, whereby the upper edge 3 of the opening 23 provided in the movable portion 16 is moved.
2 pushes down the tip portion 33 on the outer periphery of the cam 25 to
Is further rotated so that the movable portion 16 can move to the lower position.

According to the second aspect of the invention, the curb 1 can be stopped at a fixed height position with one touch of merely lifting upward by hand force and releasing the force, and the position can be maintained. When immersing in the curb storage section, use curb 1
In the same manner, it can be lowered with one touch only by lifting upward with the force of the hand and releasing the force, immersed in the curb storage portion, and maintain the upper surface of the curb 1 at the same height as the ground surface I can do it.

According to a third aspect of the present invention, there is provided a curb excavation device for exposing a curb defining a periphery of a competition track from a curb storage portion embedded in the track. And a movable portion 16 that moves up and down inside the base portion 15. The base portion 15 is fixed to the curb storage portion, and an upper end portion of the movable portion 16 is fixed to the curb 1. The curb 1 also moves up and down,
A cam 25 is pivotally supported at an appropriate position inside the base portion 15, and the cam 25 has two concave portions 28 at point symmetrical positions on the outer peripheral portion thereof.
The movable part 16 has a pin 2 below the cam 25.
2 and the like, and an engaging portion for engaging with the cam 25 is provided on the side surface of the movable portion 16, and the movable portion 16 is moved upward so that the pin 22 is inserted into the recess 28 of the cam 25. The cam 25 is rotated by the contact of the protrusions, etc., and the upward movement of the movable portion 16 is prevented. Then, the movable portion 16 is lowered, whereby the engagement portion is moved to the other concave portion of the cam 25. 28, the lowering of the movable portion 16 is stopped, the height position of the movable portion 16 can be maintained, and by moving the movable portion 16 upward, the projections such as the pins 22 contact the cam 25 again. The movable portion 16 is prevented from moving upward, and the engaging portion contacts the cam 25 and is further rotated by moving the movable portion 16 down. The part 16 can be lowered.

In the third invention, unlike the first and second inventions, the openings 23 and 26 provided on one side surface of the base portion 15 and the movable portion 16 are not necessarily essential. Instead, an engaging portion including a wider concept of engaging with the cam 25 is provided inside one side surface of the movable portion 16. In the second invention, the one corresponding to the engaging part is the opening 23 provided on the side surface of the movable part 16.
The engaging portion in the third invention has a broader concept including the upper end edge 32 of the opening 23, and acts, for example, by engaging with or abutting on the cam 25. It may be something like a projection that can exert

According to a fourth aspect of the present invention, in the third aspect of the present invention, the notch 18 is provided by partially or entirely cutting one side of the movable portion 16 in the vertical direction.
The cam 25 is pivotally supported inside the side surface of the base portion 15 corresponding to 8. Due to the presence of the notch 18, the base 1
The movable portion 16 can reciprocate up and down without the camshaft of the cam 25 provided on the side surface of the fifth member 5 obstructing at all. In the first, second and third inventions, the notch 18 is not included as a component because the cam shaft of the cam 25 can be attached to a portion other than the side surface of the base portion 15. For example, the base portion 15 may be provided with a bottom surface, and the arm may be extended upward from the bottom surface, and the cam 25 may be pivotally mounted on the arm. In this case, the notch 18 Is unnecessary. The functions of the third and fourth inventions are the same as those of the second invention.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 12 show an embodiment of the present invention. FIG. 1 is a schematic overall side view illustrating an embodiment of a curb structure according to the present invention, and shows a state where a curb 1 side and a storage angle 2 side which is a curb storage portion are separated, The storage angles 2 that are located on both sides of the curb 1 on the opposite side and the near side and that store the curb 1 between them are shown only on the other side, and the storage angles on the near side are easy to understand. It has been omitted for the sake of brevity. Also, in this figure, the illustration of a width securing member for maintaining and keeping the interval between the side walls of the storage angle 2 is omitted to avoid complication in the drawing.

The curb 1 is a long strip having a rectangular cross section made of stainless steel, and its length in the longitudinal direction is 1990 mm. A curb excavation device 10 that can cause the curb 1 to protrude and retract from the storage angle 2 is fixed to the lower surface on both ends of the curb 1.
At an appropriate position between the two curbstone excavating and retracting devices 10, two lateral shake preventing members 30 for preventing the horizontal shake (shake in a direction orthogonal to the longitudinal direction) of the curb 1 are provided. The position and number of the anti-lateral shake members 30 can be freely determined as appropriate.

On the other hand, the two storage angles 2 constituting the curb storage portion are formed in a strip shape having a substantially L-shaped cross section, and the upstanding side walls of the strip are opposed to each other. They are arranged side by side, and the curb 1 is located in the middle part between them. The storage angle 2 includes the curb hammer 1
In a position corresponding to 0, the curb emergence device 10 is supported,
A casing 11 for fixing is fixed. At the center of the storage angle 2, a bending preventing member 40 for preventing the center of the curb 1 from bending downward is fixed. Although not shown in FIG. 1, a plurality of lateral width securing members are provided at appropriate positions of the storage angle 2 to maintain and maintain a constant interval between the side walls of the storage angle 2 (described in detail later).

FIG. 2 is an explanatory cross-sectional view showing a state in which the separated curb structures shown in FIG. 1 are combined and installed on a competition track. The curb structure according to the present invention defines an inner peripheral edge of a competition track, and the track itself includes, for example, a lowermost block section 71, an upper mortar section 72, and an uppermost urethane pavement section 73. It is composed of The two storage angles 2 and 2 as curb storage portions have a substantially L-shaped cross-section, and are arranged at regular intervals with their respective upstanding side walls facing each other.
It is fixed to the block 71. The storage angle 2 is fixed by an anchor bolt or the like, though not shown, via an angle pressing plate 12. In addition, the storage angle 2 is fixed to the horizontal surface to which the storage angle 2 is fixed.
Fine adjustment bolt 13 for fine adjustment of height position
Is also provided.

The casing 11 is fixed between these two storage angles 2 with bolts and nuts. The casing 11 has a substantially U-shaped cross section, and fixes the opening having the U-shaped cross section upward. The curb excavation device 10 is fixed inside the casing 11 with bolts and nuts. The casing 11 may be formed integrally with the storage angle 2.

As will be described in detail later, the curb excavation device 10 includes a base portion 15 on the root portion side, and a movable portion 16 that reciprocates vertically from the base portion 15. It is configured to be able to move up and down and maintain the respective height positions at an upper position having a certain upper height and a lower position accommodated in the lower base portion 15. . Thereby, the height of the upper surface of the curb 1 fixed to the upper end of the movable portion 16 is 50 mm above the position of the ground (track and field) surface G, and lower than the same level as the ground surface G. The curb 1 can reciprocate up and down between the storage angles 2 between the two height positions. In FIG. 2, a state where the curb 1 is immersed in the storage angle 2 is indicated by a two-dot chain line.

In this embodiment, the curb 1 comprises a tube having a substantially rectangular cross section, and a hard rubber 3 is provided on the upper surface thereof. The provision of the hard rubber 3 is optional, and the hard rubber 3 need not be added. In fixing the storage angle 2, the angle holding plate 12 does not need to be used, and the storage angle 2 can be directly fixed to the block portion 71 by various fixing means such as an anchor bolt. The shape of the casing 11 can also be freely designed, and may be a box-like shape with an open top, instead of a U-shaped cross section. Also the casing 11
May be formed integrally with the storage angle 2.

As an example of fixing the upper end of the movable part 16 of the curb excavation device 10 to the curb 1, a screw rod is planted at the upper end of the movable part 16, and a hole is formed in the connecting member 4 provided on the lower surface of the curb 1. Can be bored, the screw rod can be inserted into this hole, and a nut or the like can be fastened from above to fix both. still,
A water channel 74 is formed from the bottom of the groove of the truck provided with the storage angle 2 to serve as a drainage channel for rainwater or the like.

FIG. 3 shows the curb excavation device 10 according to the above embodiment, in which (A) is a right side view, (B) is a plan view, and (C) is a front view. is there. The curb excavation device 10 includes a base 15 fixed to the casing 11 and a movable part 16 that moves vertically within the base 15. The movable part 16 is a base part 1
5 may be moved in the vertical direction outside. The base portion 15 and the movable portion 16 are each formed of a tubular body having a rectangular cross section, and cutout portions 17 and 18 are provided on the right side and the left side, respectively, over the entire vertical direction (FIG. 3). (B)). At the lower end of the base portion 15, FIG.
In (A), horizontal portions 27 are formed in both the left and right directions, and the horizontal portions 27 can be fixed to the bottom surface of the casing 11 with bolts and nuts.

At the upper end inside the movable part 16, a screw rod 1
A screw rod implanting portion 20 for implanting the screw rod 9 is provided. The screw rod implanting portion 20 has a substantially cylindrical shape, and has an outer diameter larger than the outer diameter of the screw rod 19. The screw rod implant 20
It is not necessary to have a columnar shape, and any shape may be used as long as the connecting member 4 fixed to the lower surface of the curb 1 can be placed. Approximately 4
The fixed portion 21 of the prism is extended, and the fixed portion 21 is fixed inside the movable portion 16 by a screw or the like. The outer shape of the fixing portion 21 can be freely designed. A nut or the like is fastened to the threaded bar 19 via a connecting member 4 provided on the lower surface of the curb 1 to fix the curb 1 to the curb excavation device 10 (see FIG. 2).

Further, a pin 22 as a projection is provided slightly above the lower end of the movable section 16 and, as can be seen from FIG. Rectangular opening 23 is provided. The pin 22 and the opening 23 function in cooperation with a cam 25 described later to change and maintain the height position of the movable portion 16. On the other hand, the left side of the base 15,
That is, a cam shaft 24 is provided at an appropriate height position on a surface corresponding to the cutout portion 18 of the movable portion 16, and a cam 25 is provided at a tip portion thereof. Further, as can be seen from FIG.
5 is provided with an elongated rectangular opening 26 in the upper part of the front part. The opening 26 is provided so that the cam 25 can rotate.

The cam 25 is formed of a substantially rectangular plate, and has a concave portion 28 cut out in a substantially V-shape at each short side. The notch portion 18 provided in the movable portion 16 is provided to avoid the cam shaft 24 provided in the base portion 15 when the movable portion 16 moves up and down, and is provided in the entire vertical direction. It may not be provided over the side, and the side portion located above the cam shaft 24 may not have the notch. Also, on the base portion 15 side, by forming a head such as a pin 22 provided inside the movable portion 16 and a screw for attaching the fixed portion 21 so as not to protrude to the outer surface of the movable portion 16, The present invention can be implemented without providing the cutout portion 17 on the side surface of the base portion 15 at all.

FIG. 4 shows a curb excavation device 1 having the above configuration.
FIG. 7A is an explanatory diagram illustrating an operation of the movable part 16, and FIG.
The movable part 16 is lifted upward, and the pin 22 is
5 (C) shows a state in which the movable part 16 maintains the upper position, and FIG.
Shows a state in which the pin 22 is again brought up and the pin 22 comes into contact with the cam 25 again, and (E) shows a state in which the movable portion 16 is moving downward.

First, in FIG. 4A, the movable portion 16 is housed inside the base portion 15 and its lower end portion 29 contacts the casing 11 (not shown). Alternatively, the lower surface of the fixed portion 21 contacts the cam 25. As a result, the movable portion 16 maintains the lowermost position, and the upper surface of the curb fixed to the upper end of the movable portion 16 at this position becomes the same as the ground surface. Here, cam 2
Numeral 5 is made of a substantially rectangular plate, and a concave portion 28 having a substantially V-shaped notch is formed at each of its short sides, and rotates around the cam shaft 24. In the drawings, the cam 25 and the pin 22 are shown by solid lines for clarity.

Next, in FIG. 4B, the movable portion 16 is pulled up. This pulling is performed by pulling the curb fixed to the upper end portion by hand force. When the movable portion 16 is pulled up, a pin 22 serving as a protrusion provided at a lower end portion of the movable portion 16 is provided.
Comes into contact with the concave portion 28 of the cam 25, and the lifting is prevented. FIG. 4B shows this state. When the pin 22 comes into contact with the cam 25, the cam 25 rotates slightly counterclockwise in the figure, and the one end portion 31 above the cam 25.
Is brought into a state where the tip can be seen from the inside to the outside through the openings 23 and 26 provided in the base portion 15 and the movable portion 16, respectively.

In FIG. 4 (C), the movable portion 16 is slightly lowered downward according to gravity, so that the movable portion 16 stops at a predetermined height position, and the height is maintained. . In this state, the upper surface of the curb fixed to the upper end of the movable portion 16 is fixed while maintaining a predetermined height position of 50 mm from the ground surface. The reason why the movable portion 16 stops in this way is that the upper end edge 32 of the opening 23 of the movable portion 16 abuts on the concave portion 28 above the cam 25 and the other end portion 33 of the cam 25 is This is because the movable portion 16 is in a state of being caught by the cam 25 as it is in contact with the inner surface, so that the movable portion 16 does not descend downward. An upper edge 32 of the opening 23 of the movable portion 16 is an engagement portion that engages with the recess 28 of the cam 25.

Next, in FIG. 4 (D), the movable part 16 is pulled up again,
The pin 22 provided on the cam 25 pushes up the long side 34 of the cam 25, and the cam 25 further rotates slightly leftward in the drawing,
Of the movable portion 16 is prevented from coming into contact with the lower end edge 39 of the opening portion 23. At this time, the upper end portion 33 of the cam 25 is oriented in the left lateral direction, that is, the long side portion 34 of the cam 25 is substantially horizontal, and the movable portion 1
The upper edge 32 of the opening 23 of FIG.
Will be located above.

Here, when the lower edge 39 of the opening 23 of the movable portion 16 abuts on the distal end portion 31 or the long side portion 34 of the cam 25, the upward movement of the movable portion 16 is prevented. Actually, even if the lower end edge 39 does not contact the cam 25, the upward movement of the movable portion 16 is prevented.
That is, the movable portion 16 is such that the pin 22 is
The upward movement of the movable portion 16 is prevented only by contacting the lower end edge 39, and the long side portion 34 of the cam 25 is substantially Maintained horizontally. Then, the next operation can be smoothly performed.

That is, in FIG. 4 (E), the movable portion 16 is lowered downward according to gravity, so that the opening 2
3 also descends, and the upper edge 32 of this engaging portion
Pushes down the long side 35 of the cam 25 in a substantially horizontal state, and further rotates the cam 25 counterclockwise by 90 degrees.
Is turned to the vertical direction. The movable portion 16 is lowered as it is, and the lower end portion 29 abuts on a casing (not shown) or the fixed portion 21 abuts on the cam 25 to return to the state shown in FIG.

By this series of operations, the movable portion 16 returns from the lower position (FIG. 4A) to the lower position again through the state of being fixed at the upper position (FIG. 4C).
This means that it has just rotated 180 degrees. Therefore, the cam 25 can move the curb 1 up and down by the half turn, that is, the cam 25 has a point-symmetric shape.

As described above, by using the curb excavation device 10, that is, by raising the curb until it stops upward by the force of the hand and releasing the hand (actually, the force of the hand is released, The curb may protrude and stop at a predetermined height with one touch, and the height may be maintained, and the curb may be stopped again in the upward direction with one touch. By pulling it up and releasing it (just like releasing the hand as before), the curb can be easily immersed in the curb storage unit to the same height as the ground surface with one touch. .

In the curb excavation device 10, the base 1
The outer shapes of the movable part 5 and the movable part 16 can be freely designed, and the movable part 16 not only moves vertically inside the base part 15 but also moves vertically outside the base part 15. You may. That is, the outer shapes of the base portion 15 and the movable portion 16 may be any cylindrical shapes that allow the movable portion 16 to move vertically inside or outside the base portion 15.

The shape of the cam 25 is not limited to the above-described embodiment, but can be freely designed as appropriate.
5 may also be formed not by a straight line but by an outwardly convex or inwardly concave smooth curve, and the V-shaped notch of the recess 28 provided on the short side also has an inwardly concave curve. It may be a notch of a shaped shape. In short, the cam 25 is rotated by the contact between the recess 28 and the pin 22, or between the recess 28 and the upper edge 32 of the opening 23 and the long side 34 of the cam 25 and the lower edge 39 of the opening 23. Then, the cam 25 may be formed in a shape that can prevent the upward movement of the movable portion 16 and prevent the downward movement of the movable portion 16.

The openings 23 and 26 provided on one side surface of the base portion 15 and the movable portion 16 can be variously changed in design. First, when the movable portion 16 is arranged inside the base portion 15 and is arranged with an interval between the front side surfaces in FIG. 3C, the cam 25 can be provided without providing the opening portion 26 in the base portion 15. Can be rotated so that the opening 26 on the side surface of the base 15 can be provided. That is, the above function can be achieved only by the presence of the opening 23 provided in the movable portion 16.

Similarly, the opening 23 provided in the movable portion 16
Also, the upper edge 32 becomes an engaging portion with the cam 25, but this engaging portion is not formed by the upper edge 32 of the opening 23, but a protruding portion is simply formed on the inner surface of the side surface of the movable portion 16. It is also possible to form it as an engaging portion. Further, another engagement portion may be provided below the engagement portion at a position corresponding to the lower edge 39 of the opening 23, and the same function as the function of the lower edge 39 may be achieved. Thereby, the opening 23
Can be implemented even without providing. However, when the movable portion 16 is disposed outside the base portion 15, the openings 23 and 26 must be provided on the respective side surfaces.

FIGS. 5 to 7 show the anti-vibration member 30 for preventing the lateral vibration perpendicular to the longitudinal direction of the curb 1 according to the present invention, and FIG. FIG. 6 shows a curb 1 and an anti-lateral shake member 3 in a state.
FIG. 7 is a front explanatory view showing a state in which the reference numeral 0 is disposed in the storage angles 2 and 2, and FIG.
Is a front view, (B) is a plan view, and (C) is a side view.

As shown in FIG. 7, the anti-sway member 30 is made of a metal having a downward U-shape in a side view and having hanging portions 37, 37 extending downward from both ends of a fixing portion 36 formed of a flat plate. The fixing portion 36 has two bolt insertion holes 38, 38. Bolt insertion hole 38
Are formed not as round holes but as elongated holes that are slightly longer in the lateral direction (width direction). Further, the hanging portion 37 is formed to have a lower lateral width wider than an upper lateral width thereof, and the lower portion having the wider lateral width is set to be approximately the same as or slightly shorter than the interval of the storage angles 2.

When attaching the anti-sway member 30 having the above configuration to the lower surface of the curb 1, the anti-sway member 30
Is fixed to the lower surface of the curb 1 and fastened and fixed with bolts or the like. In this case, the bolt insertion hole 3
8 is formed in a long hole, so that
0 can be finely adjusted in the lateral direction of the curb 1. Since the lateral width of the lower part of the hanging part 37 of the lateral vibration preventing member 30 is formed substantially the same as the interval between the side walls of the storage angles 2, 2, the hanging part 37 is disposed between the storage angles 2, 2 in the horizontal direction. As a result, the curb 1 can be prevented from running out sideways.

The anti-lateral shake member 30 may include a fixing portion 36 attached to the lower surface of the curb 1 and a hanging portion 37 extending downward from the fixing portion 36. The position and number of the hanging portion 37 are sufficient. Can be freely set, and the overall shape can be freely designed. That is, the hanging portion 37 does not have to extend downward from both ends of the fixing portion 36 as in the above-described embodiment, and the hanging portion 37 has at least one.
What is necessary is just to extend downward from an appropriate position of the sheet fixing portion 36, and three or more sheets may be used. However, since the hanging part 37 itself can prevent the lateral vibration, the number of the hanging part 37 is not limited to one, and the larger the number, the greater the effect and the more preferable.

Further, the side edge 77 (the portion in contact with the storage angle) of the wide portion below the hanging portion 37 is formed in a straight line. The frictional resistance with the angle 2 can be reduced. In addition, the shape of the side edge 77 can be freely designed. The number and position of the bolt insertion holes 38 provided in the fixing portion 36 can be set completely freely.

FIGS. 8 to 10 show a bending preventing member 40 for preventing the curving stone 1 from bending downward substantially at the substantially central portion in the longitudinal direction (see FIG. 1). FIG. FIG. 9 is a front view illustrating a state in which the stopper member 40 is fixed to the storage angle 2 and is located on the lower surface of the curb 1 to prevent the curb 1 from bending, and FIG. 10 shows a state in which the storage angle is removed and a supporting member for supporting the stopper 41 and the like are cut off, and FIG. 10 is an exploded perspective view of the bending preventing member 40.

The deflection preventing member 40 includes a stopper 41 and
The support 41 includes a support member 42 and a support auxiliary member 43 that support the stopper 41. The stopper 41 is supported by the support member 42 and the support auxiliary member 43 by a rotating shaft 44.

The stopper 41 is a substantially L-shaped metal plate member, and has a receiving portion 45 capable of supporting the bending of the curb 1 formed by bending the tip of the longer arm portion 46 of the stopper 41. . As can be seen from FIGS. 8 and 10, both sides of the arm portion 46 of the stopper 41 have a bent portion that is bent rightward in the drawings, but this bent portion is optional. It is not necessary to provide. A rotation shaft 44 for rotating the stopper 41 is fixed to the stopper 41. Between the receiving portion 45 of the stopper 41 and the curb 1, a clearance of about 2-3 mm is provided in a state where the curb 1 is not bent (see FIGS. 8 and 9).

When the curb 1 is immersed in the storage angle 2, the arm 46 of the stopper 41 becomes an obstacle, and the arm 46 of the stopper 41 is pushed by hand or the like in the direction of arrow P in FIG. The curb 1 is immersed in the storage angle 2 by pivoting about the dynamic shaft 44 and tilting it, thereby turning the short arm 47 of the stopper 41 upward (in a state indicated by a virtual line in FIG. 9). be able to.

As can be seen from FIG. 10, the support member 42 has vertical portions 49, 49 with both ends of the horizontal portion 48 extending upward.
The vertical portion 49 is formed of a metal having a U-shaped cross section, and has a notch 50 below substantially the center of the upper end edge of each of the upright portions 49, and is turned from above the notch 50. The driving shaft 44 can be fitted. In this state, the rotating shaft 44 comes off. Therefore, a supporting auxiliary member 43 is provided to prevent the turning shaft 44 from coming off.

The outer shape of the support auxiliary member 43 is also substantially the same as that of the support member 42, and has a slightly smaller outer shape than the support member 42 because of being disposed inside the support member 42. . That is, the stopper 41 is made of a metal having a substantially U-shaped cross section with an upper opening.
Has a shaft hole 51 through which the rotary shaft 44 passes. The rotation shaft 44 is fitted into the shaft hole 51, and the support auxiliary member 43 is fitted.
Is fixed to the support member 42 with screws or the like,
The rotation shaft 44 of the stopper 41 is also rotatably supported without falling out of the notch 50 of the support member 42. The support member 42 and the support auxiliary member 43 are fixed together to the storage angle 2 by screws 52 and the like (see FIGS. 8 and 9).

The outer shape and the like of the bending preventing member 40 according to the above embodiment can be freely changed in design, and the shapes of the supporting member 42 and the supporting auxiliary member 43 do not have to be substantially U-shaped in cross section. , Rotating shaft 4 of stopper 41
4 may be in any form as long as it can support the same. Also, the shape of the stopper 41 can be freely designed, and one of the long arm portions 46 is designed to be able to be turned upside down, and when the arm portion 46 stands up, it can directly prevent the curb 1 from bending. What is necessary is just to have a suitable position and length. The support assisting member 43 can be implemented without providing it. In this case, a shaft hole may be formed instead of the notch 50 provided in the support member 42 so as to support the rotating shaft 44. At the time of attachment, the support member 42 may be attached to the storage angle 2 with the rotation shaft 44 of the stopper 41 fitted into the shaft hole.

FIGS. 11 and 12 show a width securing member 53 for maintaining and securing the interval between the mounting portions of the casing 11 for supporting the curb excavating and retracting device 10 to the storage angle 2. FIG. FIG. 12 is an explanatory front view showing a state in which the width securing member 53 is attached to the casing 11, and FIG.
11A and 11B are perspective views illustrating various types of width securing members, in which FIG. 11A shows one shown in FIG. 11, FIG. 11B shows another embodiment, and FIG. Another embodiment is shown. The width securing member 53 can be naturally attached not only to the portion where the casing 11 is provided but also to a position of another storage angle 2.

The width securing member 53 shown in FIGS. 11 and 12 (A) is made of a metal plate having a substantially U-shape in plan view. Fixing portions 55, 5 extending in the same direction as
5 and each of the fixing portions 55 has a bolt insertion hole 5.
6 is provided. The fixing portion 55 can be fixed to the casing 11 and / or the side wall of the storage angle 2 with bolts and nuts.

Since the width of the upper opening of the casing 11 is kept constant by the lateral width securing member 53, the distance of the upper opening of the storage angle 22 is also kept and maintained at the same time. As a result, the curb 1 can be smoothly immersed in the storage angle 2 without causing any obstacle when the curb 1 is immersed in the storage angle. In addition, when the width securing member 53 is provided at a position of the storage angle 2 other than the portion where the casing 11 is fixed, the length of the width securing portion 54 needs to be formed as long as the casing 11 does not exist. is there.

The lateral width securing member 57 of another embodiment shown in FIG. 12B is made of metal having a substantially quadrangular shape in a plan view. The distance between the side walls is maintained and maintained constant. A horizontal width securing member 58 of still another embodiment shown in FIG. 12C has two metal bars as horizontal width securing portions 54 at both end portions of two metal plate bodies 59 as fixing portions. It is attached by fixing the plate 59 together with the casing 11 to the storage angle 2 with bolts and nuts. In these lateral width securing members 57 and 58, two or two lateral width securing portions 54 are provided at both ends in the longitudinal direction of the storage angle 2, so that the distance between the casing 11 and the side wall of the storage angle 2 is made constant. By securing it, a certain effect can be exhibited.

The shapes of the width securing members 53, 57, 58 can be variously changed in design. In short, the width securing members 53, 57, 58 have a fixing portion 55 for fixing to the storage angle 2 and / or the casing 11. It is only necessary to have one or more securing portions 54, and the shape and the like can be freely changed in design. Although the embodiments have been described above, the curbstone infestation device according to the present invention can be used not only for the above-described inner-sphere curb structure but also for an inner-sphere curb structure having various other structures. It is not limited to the inner curb structure according to the above embodiment.

[0061]

According to the first aspect of the present invention, the curb 1 can be protruded and retracted from the curb storage portion while being kept connected to the curb storage portion, and at a fixed height from the ground surface. It will be able to stop and maintain that position.

In the second to fourth aspects of the present invention, the curb is grasped by hand by the cooperative operation of the projections such as cams and pins and the opening or the engaging portion, and the curb is pulled upward to apply the force. It stops at a certain height position with just one touch of pulling out and can maintain that position.On the other hand, when the curb is immersed in the curb storage part, the curb is similarly grasped by hand and pulled up Only by releasing the force, the curb can be lowered downward with one touch and immersed in the curb storage portion, and the upper surface of the curb can be maintained at the same height as the ground surface. As described above, the present invention exerts a great effect.

[Brief description of the drawings]

FIG. 1 is an overall side view illustrating an embodiment of an inner rim curb structure according to the present invention.

FIG. 2 is an explanatory cross-sectional view showing a state in which the inner curb structure shown in FIG. 1 is installed on an actual truck.

FIG. 3 illustrates a curb hammer device according to the present invention;
(A) is a right side view, (B) is a plan view, and (C) is a front view.

4A and 4B are explanatory diagrams illustrating the operation of the curb excavation and retracting device illustrated in FIG. 3, wherein FIG. 4A illustrates a state in which the movable unit is pulled upward, and FIG. 4B illustrates a state in which the movable unit is pulled upward; (C) shows a state in which the movable portion 16 maintains the upper position, and (D) shows a state in which the movable portion is pulled up again, and the pin contacts the cam again. (E) shows a state in which the movable part is moving downward.

FIG. 5 is a side view showing a state in which the anti-lateral shake member according to the present invention is attached to the lower surface of the curbstone.

FIG. 6 is an explanatory front view showing a state in which the anti-lateral shake member and the curb according to the present invention are arranged in a storage angle.

7A and 7B show the anti-vibration member itself according to the present invention, wherein FIG. 7A is a front view, FIG. 7B is a plan view, and FIG. 7C is a side view.

FIG. 8 is a front explanatory view showing a bending stopper according to the present invention, in a state where the bending stopper is fixed to a storage angle and is located on the lower surface of the curb to prevent the curb from bending.

FIG. 9 is an explanatory side view of the state of FIG. 8;

FIG. 10 is an exploded perspective view of the deflection preventing member shown in FIGS. 8 and 9;

FIG. 11 is an explanatory front view of the lateral width securing member according to the present invention, showing a state where the curbstone retracting device 10 is attached to a casing that fixes the device.

12A and 12B are perspective views illustrating various types of width securing members according to the present invention, wherein FIG. 12A illustrates the one illustrated in FIG. 11, and FIG. 12B illustrates another embodiment; (C) illustrates another embodiment.

FIG. 13 is an overall schematic side view of a conventional inner rim structure.

14 (A) is a front view of a member on the side supporting the curb, and FIG.
FIG. 2 is a partial plan view, and FIG. 2C is a front view of a state where a curb is supported.

[Description of Signs] 1 ... curbstone, 2 ... storage angle, 10 ... curbstone excavation device, 1
DESCRIPTION OF SYMBOLS 1 ... Casing, 15 ... Base part, 16 ... Movable part, 18 ...
Notch, 19: screw rod, 22: pin, 23, 26: opening, 25: cam, 28: recess, 30: anti-sway member,
31, 33: tip end, 32: upper edge, 40: bending prevention member, 41: stopper, 42: support member, 43: support auxiliary member, 44: rotating shaft, 45: receiving portion, 46, 47: arm portion , 50 ... notch, 53, 57, 58 ... width securing member,
54: Width securing section

Claims (4)

[Claims] 1. A curb that defines the periphery of a competition track,
In a curb excavation device for excavating and retracting from a curb storage unit embedded in a truck, a curb excavation device (10) includes a movable part (16) that moves up and down inside and outside of a base (15) and a base (15). The base portion (15) is fixed to the curb storage portion, the upper end of the movable portion (16) is fixed to the curb (1), and the curb (1) is moved with the vertical movement of the movable portion (16). ) Also moves up and down, supports the cam (25) at an appropriate position inside the base (15), and moves the movable part.
A projection such as a pin (22) is provided below the cam (25) inside the (16), and openings (23) and (26) for allowing the rotation of the cam (25) are provided in the base (15). ) And the side surface of the movable part (16), these cams (25), projections such as pins (22), and openings (23).
A curb excursion device for an athletic track, characterized in that the movable portion (16) stops at a fixed height position in cooperation with (26), can maintain that position, and can move up and down. 2. A cam (25) having a point symmetrical position on an outer peripheral portion thereof.
A concave portion (28) is provided at the location, thereby forming outwardly projecting tips (31) and (33) on both sides of the concave portion (28), and moving the movable portion (16) upward. As a result, the projection of the pin (22) abuts against the recess (28) of the cam (25), thereby rotating the cam (25) and simultaneously preventing the movable part (16) from moving upward. ,
The distal end portion (31) of the outer periphery of the cam (25) projects outside from the openings (23) and (26), and then lowers the movable portion (16) to open the opening (23).
The upper end edge (32) of the cam (25) comes into contact with the other concave portion (28) of the cam (25), so that the movable portion (16) stops at a constant height position, and can maintain a constant height, By moving the movable part (16) upward, the pin (2
The projections such as 2) come into contact with the cam (25) again to rotate the cam (25), and at the same time prevent the upward movement of the cam (25).
6), the upper edge (32) of the opening (23) provided in the movable portion (16) is moved to the tip (3) of the outer periphery of the cam (25).
3) Press down to further rotate the cam (25) to move the movable part (16)
The curb excavation device for a sports track according to claim 1, wherein the device can move to a lower position. 3. The curb that defines the periphery of the competition track,
In a curb excavation device for excavating and retracting from a curb storage unit embedded in a truck, a curb excavation device (10) includes a base portion (15) and a movable portion (16) that moves up and down inside the base portion (15). The base part (15) is fixed to the curb storage part, the upper end of the movable part (16) is fixed to the curb (1), and the curb (1) also moves with the vertical movement of the movable part (16). It moves up and down and supports a cam (25) at an appropriate position inside the base portion (15). The cam (25) has two concave portions (28) at point symmetrical positions on the outer peripheral portion thereof, A projection such as a pin (22) is provided below the cam (25) inside the movable part (16), and an engagement for engaging with the cam (25) is provided on a side surface of the movable part (16). The movable part (16) is moved upward, and the cam (25) is rotated by the projection (such as the pin (22)) coming into contact with the recess (28) of the cam (25), and The upward movement of the movable part (16) is prevented,
Next, by lowering the movable part (16), the engaging part
By engaging with the other recess (28) of (25), the lowering of the movable part (16) is stopped, the height position can be maintained, and the movable part (16) is further moved upward. Pin by (22)
The projections such as contact the cam (25) again to rotate the cam (25), prevent the upward movement of the movable part (16), and then lower the movable part (16) to engage. A curbstone excursion device for an athletic track, characterized in that the joint portion abuts on the cam (25) to further rotate the cam so that the movable portion (16) can be lowered. 4. A notch (18), which is cut out partially or entirely on one side surface of a movable portion (16) in the vertical direction,
The curb excavation device for a racing track according to claim 3, wherein a cam (25) is pivotally supported inside the side surface of the base portion (15) corresponding to (18).