JPS6018857B2 - Brake device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake device, and more particularly to a brake device using an automatic kneading mechanism.

Automobile production lines are an area where reliability and safety are particularly important, especially when the line is rotated in a tact manner.
Since it is transferred between stations at high speed, sudden stops are required for the safety of people and workpieces. However, in the car track system that has recently been proposed as a production line system, the car (bogie) does not have a power source, so it is not possible to apply brakes to the wheels, and the drive tube (ground side line shaft)
If the motor brake is used to stop the vehicle, the drive wheels will slip and the required braking distance will be exceeded. Therefore, there is currently a demand for a brake device that can adjust the braking force. The present invention, which was created to meet this demand, employs an automatic tightening mechanism to obtain a large braking force, but conventional automatic tightening mechanisms include a method that clamps the guide rail when cutting the elevator wire rope. .

However, the purpose of this follow-up method is to stop the elevator car, and it is only necessary to stop the elevator car suddenly, so the braking force cannot be reduced. That is, various types of this method have been proposed, and one example is a type in which the rollers a bite into the wedge when a rope break is detected, as shown in FIG.
Note that b in the figure indicates the guide rail). With this type, it is impossible to calculate the magnitude of the braking force, and it takes a long time to release (reset) the brake, etc. There is a pause. The object of the present invention is to provide a brake device that can solve the above-mentioned problems and can freely adjust the braking force. A brake frame is attached to the frame, a first link having a brake shoe at one end is arranged symmetrically across the material to be braked, and the first link is attached to a block provided on the frame so as to be movable along the material to be braked. The middle part of one link is rotatably attached, one end of a second link is rotatably connected to the other end of the first link, and the other end of the second link is attached to the frame. Each of the first links is rotatably mounted, and a spring portion is formed in a part of the first link so that the first link springs out as the block moves when the brake is applied to apply a clamping force to the material to be braked, and furthermore, the stepwise movement of the block is The gist of the present invention is a brake device characterized in that a limiting stopper is provided on the frame.

The configuration of the present invention will be specifically described below with reference to the drawings.

Figures 1 and 2 show this brake device (showing the state when the brake is released), K is the brake device,
Reference numeral 1 denotes a plate to be braked (bar to be braked), which is attached to a movable object to be braked by the brake device K. It is supposed to move to .

The brake device K has a brake box 8, and the brake box 8 is provided with a mechanism for automatically tightening and releasing the brake plate 1.

That is, a slide block 2 having a pin 4 for supporting a brake lever 3, which will be described later, fixed to the upper surface of the brake box 8 is provided on the upper part of the brake box 8 so as to be slidable in the front-rear direction (the direction of the arrow A or the opposite direction). , the slide block 2 can be swung left and right to some extent in order to cover manufacturing errors and the like.
A brake lever 3, which is a first link and has a brake shoe 5 attached to its tip (the end on the side of the block 2), is arranged symmetrically at a position sandwiching the brake plate 1.
The tip of each brake lever 3 is rotatably attached to a pin 4 of the slide block 2, and the end of each brake lever 3 is rotatably connected to an opening/closing arm 6, which is a second link, via a pin 15. The opening/closing arm 6 is rotatable around a base pin 7 fixed to the brake box 8 via a bearing 9. A roller chain 10 is set on a sprocket 16 attached to the lower end of the base pin 7, and one end of the roller chain 10 is connected to a rod 11 in a solenoid 12 provided at the bottom of the brake box 8.
The end of the roller chain 10 is
It is connected to a spring 13 attached to the lower part of the brake box 8, and by operating the solenoid 12 and rotating the opening/closing arm 6, the brake shoe 5 is tightened against the brake target plate 1', and the brake is turned on. It is configured. Note that under normal conditions, the brake is in the OFF state due to the force of the spring 13.
Furthermore, the brake box 8 includes the brake O.
A stopper 14 is attached to the slide block 2 that slides when N is activated, so that the braking force can be adjusted.

Next, the operation of the brake device configured as described above will be explained with reference to FIGS. 3 and 4.

When turning on the brake now, when the solenoid 12 is energized by the activation signal, its operating force exceeds the force of the spring 13 and rotates the base pin 7 through the rod 11, roller chain 10, and sprocket 16, thereby opening/closing. At the same time as the arm 6 rotates, the brake lever 3 also rotates using the pin 4 as a fulcrum (in this case, the slide block 2 to which the pin 4 is fixed also moves), resulting in a state as shown in Fig. 3, and the brake shoe 5 is attached to the plate to be braked. 1, and a contact pressure of "Rs" is generated between the brake plate 1 and the brake shoe 5.

At this time, since the brake plate 1 is moving in the direction of arrow A, the slide block 2 is about to be further moved in the same direction by the force of the brake force RS. At this time, the relationship between the brake lever 3 and the opening/closing arm 6 is arranged to be automatically vertical, so if the slide block 2 moves even slightly due to Rs, the brake lever 3 will sag, and Rs will increase. The value becomes "R", and the movement force of slide block 2 is also 1 R.
S→R increases and the slide block 2 is moved in the direction of the arrow with a larger force, but since the stopper 14 is located at the position where the slide block 2 has moved by the S dimension, the slide block 2 does not move any further. . The state at this time is shown in Figure 4. When the state shown in Figure 4 is reached,
Since the slide block 2 is stopped by the stopper 14, the pending beam 3a, which is the spring part of the brake lever 3, receives the pending action and moves to "6" as shown in the figure.
Only manipulation is occurring. Therefore, a contact pressure of "P" is generated on the pin '5 connecting the brake lever 3 and the opening/closing arm 6, but the value of this P increases in proportion to the value of 6 due to the spring action of the pending beam 3a. Furthermore, since it is a lever mechanism, the contact force R between the brake plate 1 and the brake shoe 5 is defined by P, and as P becomes larger, R becomes larger. Therefore, the relationship holds that S is large → 6 is large → P is large → R is large → R is large = FB is large, and S causes the brake force (
FB) can be defined (see also Figure 5). In short, brake force FB=2-R Rphantom P , . , R sword 6 ,. , FB momme becomes 6 (Pme 8).

Since the value of S can be changed by adjusting the stopper 14, the value of FB can also be obtained steplessly from 0 to the maximum value.

On the other hand, when turning off (releasing) the brake, it is automatically released by moving the brake plate 1 in the opposite direction to the direction of the arrow A. good).

If you plan the positional relationship of the link device [brake lever 3, opening/closing arm 6] from the beginning during brake operation, P
Natural release of the brake is also possible with component force Py. P
The component force Py is a force that tries to push back the truck, and this forces the truck to push back and automatically release the brake after the truck has stopped. In the case of FIGS. 1 and 2, the operating source is the solenoid 12, but it may also be an electric, hydraulic, or pneumatic cylinder, or the operating source directly connects the base pin 7.
This can also be done by rotating the slide block 2 or by directly connecting an operating source to the slide block 2.

However, as mentioned above, the use of the solenoid 12 is direct and can provide the shortest response time. Next, some embodiments will be given in which the brake device of the present invention described above is applied in various industrial fields.

Figure 6 shows an example in which the brake device K is installed on the ground side and the brake plate 1 is provided on the movable part.
This is effective when braking a truck 8 (the truck itself does not have a power source).

In addition, 19 in the figure indicates a bumper. On the other hand, when the truck itself has a power source, as shown in FIG. 7, a brake device K is provided on the power truck 20 side, and the brake plate 1 is installed on the ground side.

In this case, even one truck 20 can brake. Also the 8th
As shown in the figure, when used as a fall prevention brake (emergency brake) for a lifting machine such as an elevator or a stack crane, a brake device K is provided on a movable part, that is, a lifting cage 21, and a guide rail 22 is used as a plate to be braked. .

In this case, in addition to the configuration in which the brake actuation source (solenoid 12, etc.) is provided inside the brake box 8 as described above,
The brake operation source is a speed governor for lifting/lowering or a wire for lifting/lowering.
If connected directly to the break detection part of a loop or chain, it becomes a very effective emergency brake. With the configuration and operation described above, the brake device of the present invention exhibits the following excellent effects. (i) By adopting an eye movement tightening mechanism, a large braking force can be obtained even with a small actuation force. (ii)
The device is small compared to the brake force.

(iii) Since the brake force can be calculated and adjusted easily, the bogie can be stopped smoothly. GV brakes can be easily released.

(v) Good responsiveness.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the brake shoe portion of the brake device of the present invention, Fig. 2 is a block diagram of the brake drive mechanism of the brake device of the present invention, and Fig. 3 shows the state of the brake shoe portion during brake operation. 4 is an explanatory diagram showing the relationship between the forces acting on the brake shoe portion, FIG. 5 is a graph showing the relationship between FB and S shown in FIG. 4, and FIGS. 6 to 8 are Each shows an example of the use of the brake device of the present invention. FIG. 6A is a plan view of a non-powered truck, the opening of FIG. 6 is a side view of a part thereof, and FIG. × arrow view, Fig. 7 A is a plan view of a power truck, Fig. 7
The figure opening is a view in the direction of the X arrow in Figure 7A, Figure 8A is an elevational view of the case of an elevator, the figure 8 entrance is a view in the direction of the Y arrow in Figure 8A, and Figure 8C is a view in the direction of the Y arrow in Figure 8A. FIG. FIG. 9 is an explanatory diagram showing an example of a conventional automatic verticalization mechanism.
K: Brake device, 1: Brake plate, 2: Slide block, 3: Brake lever, 4: Pin, 5: Brake shoe, 6: Opening/closing arm. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1 Attach the material to be braked to the bogie side or the track side, attach a brake frame to the track side or the bogie side, and arrange the first link with a brake shoe at one end symmetrically with the material to be braked in between. The middle part of the first link is rotatably attached to a block provided on the frame so as to be able to slide along the material to be braked, and one end of the second link is attached to the other end of the first link. and the other end of the second link is rotatably attached to the frame, and the first link is bent by the movement of the block when the brake is applied to apply a clamping force to the material to be braked. A brake device characterized in that a spring portion is formed in a part of the first link, and a stopper is further provided on the frame to limit sliding movement of the block.