JP3046223B2 - Lateral gate door braking system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for applying a braking force to running wheels of a running body.

[0002]

2. Description of the Related Art A conventional braking device will be described with reference to FIGS.

[0003] In the figure, 1 is fixed to the rotating shaft of the traveling wheel,
Or a rotating drum connected to the rotating shaft of the traveling wheel,
A set of semicircular brake shoes 2 is symmetrically disposed inside the rotary drum 1, and both brake shoes 2 are rotatably provided around a pin 7 at the lower end. A spring 3 for urging the two in the closing direction between the two brake shoes 2
Has been passed. A cam 4 is provided between the upper ends of the brake shoes 2, and the cam 4 is rotatable.
A braking lever 5 is mounted on a rotating shaft (not shown) of the cam 4. A wire 6 is attached to the tip of the brake lever 5, and the wire 6 is connected to a braking operation means such as a brake pedal (not shown).

FIG. 10 shows a non-braking state, in which the upper end of the brake shoe 2 is closest to the other by the urging force of the spring 3, that is, the cam 4 and the brake lever 5 are in the upright state in the figure. , Both brake shoes 2 shrink,
There is a gap between the outer surface of the brake shoe 2 and the inner surface of the rotary drum 1, and no frictional force acts. Therefore, the rotary drum 1 rotates freely.

Next, when braking, the wire 6
To rotate the brake lever 5 counterclockwise in the figure against the spring 3. The cam 4 tilts to widen the upper end of the brake shoes 2 to expand both brake shoes 2. First, there is no gap between the outer surface of the brake shoe 2 and the inner surface of the rotary drum 1 (see FIG. 11), and by further expanding the brake shoe 2, the outer surface of the brake shoe 2 is pressed against the inner surface of the rotary drum 1 and (See FIG. 12).

[0006] From the state in which the braking lever 5 is in the neutral state to the state in which the outer surface of the brake shoe 2 is pressed against the inner surface of the rotary drum 1 to be in the braking state, what is called brake play.

[0007]

The above-mentioned amount of play of the brake must be properly set. However, in the conventional braking device, since the cam and the braking lever are provided integrally, the braking device is also required. The brake itself has no function of adjusting the play of the brake, and must be performed on the side of the braking operation means. For this reason, when a plurality of braking devices are performed by one braking operation device, adjustment between the braking operation device and each braking device,
There is a problem that the adjustment of the play of the braking device alone cannot be performed, the adjustment at the time of assembly is very troublesome, and the adjustment cannot be performed when the play changes over time such as wear of the brake lining.

The present invention has been made in view of the above circumstances, and is capable of adjusting between the brake body and the brake operating means and adjusting the play of each brake device.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a horizontal sliding door is provided.
The guide roller is slidably supported by the guide roller.
In a braking device in which a roller is provided with a brake drum, a brake shoe is provided inside the brake drum, and the brake shoe is expanded and contracted by a cam, and is brought into contact with and separated from the inner peripheral surface of the brake drum. An adjusting plate is fixed to the camshaft and a brake lever connected to a brake operating means is rotatably provided on the camshaft. One of the adjusting plate and the brake lever is provided around the axis of the camshaft. An arc-shaped adjustment hole is provided, and the adjustment plate and the brake lever can be fixed by a bolt penetrating the adjustment hole.

[0010]

When the brake lever is rotated by the brake operating means while the brake lever and the adjusting plate are fixed, the cam rotates to expand and contract the brake shoe to generate a braking force on the brake drum. The relative position between the brake lever and the adjusting plate can be changed by loosening the bolt that has penetrated the brake lever, and by adjusting the relative position, adjustment with the brake operating means and brake play can be adjusted.

[0011]

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

1 and 2, reference numeral 8 denotes a brake body 9
Is a fixed substrate for fixing the vehicle to a traveling body or a structure,
A shaft 10 is fixedly mounted on the fixed substrate 8, and a rotating body 12 such as a roller or a wheel is rotatably provided on the shaft 10 via a rotary bearing 11. A brake drum 13 is formed on the rotating body 12 on the side opposite to the fixed substrate 8.
A brake base 14 is fitted to the tip of
0, fixed key 15 is buried between brake base 14,
The brake base 14 is fixed to the shaft 10.

A cam shaft 16 is passed through the brake base 14, and the tip of the cam shaft 16 is
The cam 4 is provided at the tip of the hollow portion 17 so as to protrude. A pair of semicircular brake shoes 2 are symmetrically arranged in the cavity 17, and the lower ends of both brake shoes 2 are pivotally connected to the brake base 14 via pins 7. The two brake shoes 2 are urged toward the reduction side by a spring (not shown).

The camshaft 16 and the cam 4 are formed integrally or, if they are separate, integrated by welding or the like. An adjusting plate 18 is fixed to the outer end of the cam shaft 16, and the brake lever 5 is rotatably provided on the outer end. The adjusting plate 18 has a substantially semicircular shape, and is provided with an arc-shaped adjusting hole 19 centered on the axis of the camshaft 16. A bolt 20 is passed through the brake lever 5 and the adjustment hole 19 of the adjustment board 18, and the bolt 20 allows the brake lever 5,
The adjusting plate 18 can be fixed. In the drawing, reference numeral 21 denotes a pushing screw for preventing the bolt 20 from loosening.

A wire 6 connected to a braking operation means is fastened to the upper end of the braking lever 5.

The operation will be described below.

The adjusting plate 18 and the brake lever 5 are fixed by the bolt 20. When the wire 6 is pulled, the brake lever 5
1 rotates counterclockwise in FIG. 1, and the rotation of the brake lever 5 is transmitted to the cam shaft 16 and further to the cam 4 via the adjusting plate 18 so that the brake shoe 2 is enlarged and the brake drum 13 A frictional force is generated therebetween, and a braking force is applied to the rotating body 12.

When the tensile force on the wire 6 is released, the brake shoe 2 is actuated by the spring (not shown).
Is returned in the reduction direction, and the braking force on the rotating body 12 is released.

Next, adjustment of play in the brake body 9 and the like will be described with reference to FIGS.

First, FIGS. 3 and 4 illustrate a case where the position of the brake lever 5 is adjusted. The bolt 20 is loosened, and the brake lever 5 and the adjusting plate 18 are connected to the camshaft 1.
6 can be freely rotated around the center, and
And the brake lever 5 is rotated. The cam 4 and the adjusting plate 18 are integrated, so that the position of the cam 4 is not changed by not moving the adjusting plate 18 and the position of the brake lever 5 can be adjusted without affecting the braking state of the brake body 9 itself. Become. After setting the brake lever 5 in a desired posture, that is, FIG. 4 or FIG. 5, the bolt 20 is tightened, and the brake lever 5 and the bolt 20 are fixed.

By adjusting the position of the brake lever 5, the mutual relationship between the brake body 9 and the brake operating means (not shown) can be easily adjusted.

6 to 8, the braking lever 5
The case where the position is adjusted will be described.

The bolt 20 is loosened so that the brake lever 5 and the adjusting plate 18 can freely rotate about the cam shaft 16, and the brake lever 5 is fixed to rotate the adjusting plate 18. The cam 4 rotates via the cam shaft 16 by the rotation of the adjusting plate 18 to enlarge the brake shoe 2. When the cam 4 expands the brake shoe 2 by a desired amount, the cam 4 and the adjusting plate 18 are fixedly integrated by the bolt 20.

Thus, only the state of the cam 4 can be changed without changing the posture of the brake lever 5. Such adjustment indicates that the play of the brake body 9 itself can be easily adjusted.

The adjustment hole 19 may be provided on the brake lever 5 side by changing the shape of the brake lever 5, and in this case, the shape of the adjustment plate 18 may be simply a strip shape.

FIG. 9 shows a specific embodiment of the present invention.

FIG. 9 shows an example in which the invention is applied to a braking device for a horizontal sliding gate.

A gate 25 for opening and closing the entrance between the gate walls 23 and 24 is slidably supported by a pair of upper and lower guide rollers 26 and 27 provided on the side of the gate wall 23, and the gate 25 is in a closed state. To come into contact with the door receiver 28.

The braking device of the present invention is provided on the guide roller 27, and the guide roller 27
It corresponds to 2.

A braking operation means 30 is provided at the tip of the gate 25.
The wire 6 attached to the braking operation means 30 is wound around guide rollers 31 and 32 and is attached in series to the braking levers 5 of the two brake bodies 9.

When the wire 6 is pulled by an operation lever (not shown) of the brake operation means 30, the brake levers 5 of the two sets of brake bodies 9 are simultaneously rotated, and the brake bodies 9 are operated to guide the guide rollers. A braking force acts on the gate 25 via 27.

In the above specific example, by adjusting the brake lever 5 with the adjustment plate 18 fixed, adjustment between the individual brake bodies 9 and the brake operation means 30 can be performed (FIGS. 3 to 5).
By adjusting the brake lever 5 and rotating the adjusting plate 18, the play of each brake body 9 itself can be easily adjusted (see FIGS. 4 to 8).

[0033]

As described above, according to the present invention, the adjustment between the brake body and the brake operating means can be easily performed on the brake body side, the play adjustment of the brake body itself can be easily performed, and the lining is worn out due to wear and the like. Excellent effects such as easy adjustment can be achieved even when there is a significant change.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view in which a part of the front is broken.

FIG. 3 is an explanatory diagram showing an adjusting operation of the braking device according to the embodiment.

FIG. 4 is an explanatory diagram illustrating an adjustment operation of the braking device according to the embodiment.

FIG. 5 is an explanatory diagram showing an adjusting operation of the braking device according to the embodiment.

FIG. 6 is an explanatory diagram showing an adjusting operation of the braking device according to the embodiment.

FIG. 7 is an explanatory diagram illustrating an adjustment operation of the braking device according to the embodiment.

FIG. 8 is an explanatory diagram showing an adjusting operation of the braking device according to the embodiment.

FIG. 9 is an explanatory diagram showing a specific example of the present invention.

FIG. 10 is an explanatory diagram showing a conventional example.

FIG. 11 is an operation explanatory view of the conventional example.

FIG. 12 is an operation explanatory view of the conventional example.

[Explanation of symbols]

 2 Brake Shoe 4 Cam 5 Brake Lever 9 Brake Body 12 Rotating Body 13 Brake Drum 16 Camshaft 17 Cavity 18 Adjustment Board 19 Adjustment Hole 20 Bolt

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16D 51/22 E06B 11/02

Claims (1)

(57) [Claims] The sliding door is slid by a guide roller.
And a brake drum is mounted on the guide roller.
A brake shoe is provided inside the brake drum, the brake shoe is expanded and contracted by a cam, and is brought into contact with and separated from the inner peripheral surface of the brake drum.
An adjusting plate is fixed to a cam shaft integrally provided with the cam, and a brake lever connected to braking operation means is rotatably provided on the cam shaft. The cam shaft is provided on one of the adjusting plate and the brake lever. A brake device for a horizontal pulling gate, characterized in that an arc-shaped adjustment hole centered on the axis of is provided, and an adjustment plate and a brake lever can be fixed by a bolt penetrating the adjustment hole.