JPS5980533A - Brake device - Google Patents

Abstract

PURPOSE:To obtain a brake device capable of freely adjusting brake force by providing a frame with a stopper which limits sliding of a block slidably provided along a material to be braked. CONSTITUTION:At the time of putting a brake in operation, through setting a solenoid 12 conductive, a basic pin 7 is rotated via a rod 11, roller chain 10 and a sprocket 16. Then, simultaneously with rotation of an opening/closing arm 6, a brake lever 3 is also rotated with a pin 4 as a fulcrum, while a brake shoe 5 comes in contact with a plate 1 to be braked causing contact pressure between them, and a slide block 2 is about to be moved further. At this time, since the brake lever 3 and the opening/closing arm 6 are arranged so as to constitute automatic locking, even a slight movement of the block 2 produces a flection on the brake lever 3 to move the brake 2 in the direction of an arrow with larger force. However, the block 2 does not advance any further after its movement by S dimension because a stopper 14 is located there. Thus, the brake force can be steplessly adjusted from zero to the maximum value due to adjustment by the stopper 14.

Description

[Detailed description of the invention] The present invention relates to a brake device that utilizes this structure.

Automobile production lines are an area where reliability and safety are particularly important, especially when the line is operated on a tact basis.
Since it is transferred between stations at high speed, a sudden stop F is required for the safety of people and the workpiece. However, in the car track system that has recently been proposed as a production line system, the car (
Since the trolley (bogie) does not have a power source, it is not possible to brake the middle wheels, and if the drive tube (base line shaft on the second side) is stopped by the motor brake, the drive wheels may slip and exceed the required braking distance. Become. Therefore, there is currently a demand for a brake device that can adjust the brake knob 1.

The present invention, which was created to meet this demand, employs an automatic netting mechanism to obtain a large braking force.
As a conventional automatic netting system, there is a method of clamping a guide rail when cutting an elevator wire rope. However, in this conventional method, the only way to stop the elevator car is [1], and it is only necessary to suddenly stop the car by +1, so it is not possible to reduce the braking force. That is, 121 different types of this system have been proposed, and one example is a type in which the rollers a feed into the wedge when a rope break is detected, as shown in Figure 9. (The box in the figure shows the guide rail.) With this type, it is impossible to calculate the size of the brake horn, and it takes a long time to release (reset) the brake. There is a problem.

The present invention was made for the purpose of providing a brake device that can solve the problem of "double chain" and can freely adjust the brake horns. A brake frame is attached to the track side or the bogie side, and the block is slidably provided on the frame, and the middle part of the first link is provided with a first brake shoe at one end. The other end of the first link is pivotally connected to a sliding piece that is slidably attached to the second link, and the link of ff12 is rotatably attached to the frame. A spring is used to force the sliding piece away from the center of rotation, and a second brake shoe facing the first brake shoe is supported by the block while holding the material to be braked.
The gist of the brake device is that the frame is provided with a stopper that limits the block.

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,
1 is a material to be braked (a bar to be braked), which is attached to a movable object to be braked by the brake device K, and the plate 1 to be braked is moved in the direction indicated by the arrow or in the opposite direction with respect to the brake device K. It is supposed to move to .

1. The brake equipment Ft 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, on the upper part of the brake box 8, a slide block 2 to which a pin 4 for supporting a brake lever 3, which will be described later, is fixed to the upper surface, is slidable in the Hi1f# force direction (in the eight directions of arrows n11 or in the opposite direction). The slide blocks 2 can be swung left and right to compensate for manufacturing errors. Brake levers 3 (two in the case of FIG. 1), which are the first links with brake shoes 5 attached to their tips (ends on the side of the block 2), sandwich the brake plate 1 (in the ei position). They are arranged symmetrically on the left and right, and the tip end of each brake lever 3 is connected to the pin 4 of the slide block 2.
The other end of each brake lever 3 is pivotally connected to a sliding piece 6b (see Fig. 3).
The sliding piece 6b is slidably fitted into the opening/closing arm 6a, which is a second link fixed to the base pin 7 which is rotatable in the brake box 8 via a bearing 9, and is attached to a spring 6c.
The base pin 7 is biased in the direction of separation by the base pin 7.

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 solenoid 12 provided at the bottom of the brake box 8 via a rod 11. , and the other end of the roller chain 10 is connected to a spring 13 attached to the bottom of the brake box 8, J: nI2
By operating the solenoid 12 and rotating the opening/closing arm 6 via the base pin 7, the brake shoe 5 is tightened against the brake plate 1 and the brake is turned on.
It is configured to do so. In addition, under normal conditions, the above spring 13
The brake is in the OFF state due to the horn.

Further, the brake box 8 is provided with a stopper 14 for the slide block 2 that slides when the brake is turned on, so that the braking force can be adjusted.

Next, the operation of the brake system constructed as described above will be explained with reference to FIG.

When the brake is turned on 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 and closing. At the same time as the arm 6 rotates, the brake lever 3 also rotates with 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 by the solid line in FIG. 3, and the brake shoe 5 contacts the brake target plate 1, and a contact pressure of rRsJ is generated between the brake target plate 1 and the brake shoe 5.

At this time, since the brake plate 1 is moving in the direction of the arrow, the slide block 2 is about to be further moved in the same direction by the force μRs. At this time, the relationship between the brake lever 3 and the opening/closing arm 6 is arranged to automatically tighten, so if the slide block 2 moves even slightly due to μRs, the brake lever 3 is bent, and Rs increases to 1R111i. The moving force of the slide block 2 also increases from μRs to μR, and the slide block 2 is moved in the direction of the arrow with a larger force, but the stopper 14
Because of this, slide block 2 cannot proceed any further. The slide block 2 is moved to 11 by the stopper 14.
-, the spring 6C is deflected by 1゛δ as shown in the figure, by an amount corresponding to the moving needle S of the slide block 2. Therefore, a contact pressure of rPJ is generated on the pin 15 that connects the brake lever 3 and the opening/closing arm 6.
The flo of this P increases in proportion to the deflection δ(fi) of the spring 6C.Also, 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 P is large. →R. Therefore, S is great god δ is large → P
is large → R is large → μR is large = FB is large. This means that the braking force (FB) can be defined by S (see also FIG. 4). In short, play keno 3
FB=2μR R5oP,', R-δ,', FB%δ. (P'
−δ).

Since the above S (iN is changed by adjusting the ia of the stopper 14), the FB can also be adjusted steplessly from 0 to the maximum.
, (7 can be done.

- When turning off (releasing) the brake,
If the plate 1 to be braked is moved in the opposite direction to the direction of the arrow A, it will be automatically released (if applied to a truck to be described later, the brake can be moved in the opposite direction (4)).

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 base pin 7 may be rotated directly from the operating IMc. This can also be done by directly connecting the operating source to the slide block 2.

However, as mentioned in II, using the solenoid 12 is direct and can shorten the response time the most.

Father, in the case of Figure 1 and Figure 2, there are two symmetrical brake levers 3, but as shown in Figure 5, there is only one brake lever 3, and one side is a slide block. 2
A shoe 5a fixed on the top may also be used.

Next, some embodiments will be given in which the brake device of the present invention described below is applied in various industrial fields.

Figure vIJ6 shows an example in which the brake device K is installed on the ground 01 and the brake plate 1 is provided on the movable part. This is effective when braking a vehicle (the truck itself does not have a power source). In addition, 19 in the figure indicates a bumper.

- When the power truck itself supplies power, as shown in FIG. Brakes can also be applied to trolley 20.

Further, as shown in FIG. 8, when used as a fall prevention brake 11- (J-to normal brake) for an R sieve machine such as an elevator or a stack crane, a brake device K is provided on a movable part, that is, an elevator cage 21, The guide rail 22 is used as a brake plate. In this case, the brake actuation source (solenoid 12, etc.) is installed in the brake box 8 as described in section 1, and the governor for raising and lowering the brake actuator is connected to the shoulder 1.
:If connected directly to the wire rope for keys or the break detection part of the 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.

(1) By adopting an automatic tightening mechanism, large braking force can be obtained with small actuation force.

(i) The device is smaller than Play Kino J.

Qi9 play kino J can be calculated and brake force can be adjusted during the song.

Ov) Brake release is easy.

(v) RJF, quality is good.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a part of the brake shoe of the brake device of the present invention, Fig. 2 is a block diagram of the brake drive mechanism of the brake shoe of the present invention, and Fig. 3 shows the state of the brake shoe part during brake operation. FIG. 4 is a graph showing the relationship between FB and S shown in FIG. 3, and FIG. 5 is an explanatory diagram showing another embodiment. Figures 6 to 8 show examples of the use of the brake device of the present invention, respectively. Figure 6 [A] is a plan view of a non-moving horn truck, and Figure 6-] is a side view of a part thereof. Fig. 6B is the X arrow view of Fig. 6 (A), Fig. 7
Figure (a) is a plan view of the power truck, Figure 7 (b) is a view taken in the direction of the X arrow in Figure 7 (a), Figure 8 (a) is an elevation view of the elevator, and Figure 8 [Mouth] is Y in Figure 8 (A)
The arrow view, FIG. 8B is a Z arrow view of FIG. 8(A). FIG. 9 is an explanatory diagram showing an example of a conventional automatic tightening mechanism. K... Brake device, 1... Brake plate, 2...
・Slide block, 3... Brake lever, 4...
・Bin, 5...Brake shoe, 6a...Opening/closing arm\, 6b...Sliding piece, 6c...Spring. 1911 people for patent Ishikawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Claims] 1] Attach the material to be braked on the platform side or the track side, and install the brake frame on the track side or the bogie side,
The middle part of the first link, which has a first brake shoe at one end, is rotatably attached to a block provided in the ntJ frame so as to be movable on the material to be braked. The end portion is pivotally connected to a sliding piece that is slidably attached to a second link, and the second link is rotatably attached to the nυ frame, and a spring is used to move the sliding piece away from the center of rotation. (The second brake shoe, which faces the first brake shoe, is supported by the 1 lil block, and the n11 frame is provided with a stopper that limits the sliding movement of the block.) A playing device characterized by: