JPS6229046Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plate opening claw device for a plate-type passing machine.

As a conventional plate-opening claw device, the plate-opening device disclosed in Japanese Utility Model Publication No. 1983-37769, invented by the applicant of the present application, has been effectively used. As shown in Fig. 1, a push claw 1' and a push claw 2', which can be rotated to fall down and stand up, are provided in a claw box facing each other, and the claw box is connected to a chain and runs on a rail. The board is opened by pushing it with the button.

However, since the plate is pushed by the push claw 1' and stops against the previously opened plate or frame, the claw box and plate immediately move in the closing direction due to the reaction of this stop. . At this time, a situation occurs in which the claw 2' hooks the opened board again, and as the claw box moves in the closing direction to open the next board, the hooked board moves again in the closing direction. become. Although such a situation is extremely rare, it will interfere with the automatic opening of the plate. This is because the claw 2' is biased to stand up by the spring.

Therefore, the present invention aims to eliminate this drawback and provide a device that can perform smooth plate opening.The details of the present invention will be described below with reference to illustrated embodiments. The pawl device S of this example shown in FIGS. 2 to 4 has a push pawl 1 and a stop pawl 2 that are housed in a pawl box K so as to face each other, and are connected by pins 3 and 4, respectively, so that they can be moved up and down. I support it.
One end of a tension spring 5 is locked to the lower end of the pusher claw 1, and by locking the other end of the spring 5 to a protruding rod 6 inside the claw box K, the pusher claw 1 is always urged to stand up and rotate. ing. 7 is a seesaw material and has a horizontal long hole in the claw box K.
The protruding engaging part 7a at one end is placed under the pusher claw 1 by attaching it to the pin 8 inserted between the gaps between the two. It faces the cut section 2b. That is, the pushing pawl 1 and the mating pawl 2 are placed on seesaw-shaped engaging portions 7a and 7b, respectively. Reference numeral 9 denotes a movable lid of a conventional upright mechanism, which moves on the claw box K by pressing against the protruding body of the overhanging mechanism, and serves to prevent the pushing claw 1 from rising.
The movable lid 9 and the pin 8 are connected outside the claw box K via an arm 9a. 2a is a spring protruding from both sides of the claw, 10 is a wheel of the claw box K, 11 is a rail, and 12 is a chain of a traction device (not shown), which is connected to the claw box K.

To explain the plate opening operation according to this example S configured as described above, first, as shown in FIG. It hits and collapses. As a result, the engaging portion 7a of the seesaw member 7 is lowered and the other engaging portion 7b is raised using the pin 8 as a fulcrum, so that the claw 2 stands up. Then press the push claw 1 as shown in Figure 6.
When the claw 2 stands up apart from the support piece Ea, the claw 2 comes into contact with the support piece Ea and detects the resistance force, and the motor (not shown) rotates in reverse, so that the claw box K moves in the opening direction. As a result, the push claw 1 pushes the support piece Ea to open the plate as shown in FIG. At this time, since the pusher claw 1 stands up, the pusher claw 2
The push-up of the engaging portion 7b is also released, but since the spring 2a is lightly snap-locked between the inner surfaces of the claw box K, the claw 2 remains in an upright state and is moved between it and the push claw 1. The plate will be opened by sandwiching the support piece Ea. When the plate moves to the open end, the resistance is detected and the motor reverses again to move the claw box K in the direction of closing the plate. At this time, the claw 2 is lying down against the support piece Eb of the previously opened plate, so there is no problem in the movement of the claw box K (see FIG. 8). Also,
The characteristic feature of this example is that the claw 2 is not biased to stand up by the spring, so the supporting piece of the opened plate is
This prevents Ea from being caught by the claw 2 and moved. After repeating this operation and opening all the plates, the claw box K moves again in the direction of closing the plates, and as shown in Fig. 9, the pushing claw 1 is brought down by the body 13 and the claw 2 is raised up. At the same time, the movable lid 9 comes into contact with the protrusion 14 and is positioned above the pusher claw 1 (the first
(See figure 0). At the same time, the claw 2 hits the machine body 13, detects the resistance force, reverses the motor, and closes the claw box K.
Move toward the opening direction. Furthermore, as the movable cover 9 moves, the pin 8 connected via the arm 9a also moves along the elongated hole Ka, and the seesaw material 7 also moves, so the engaging part 7b is connected to the cutout part 2b of the claw 2. It moves away from. In this state, the claw box K moves in the direction of opening the plate, but the claw 2 falls down and moves when it hits the support piece E of the opened plate (see FIG. 11). At this time, since the engaging portion 7b is separated, the claw 2 can be lowered without any problem. Then, the movable lid 9 comes into contact with the protruding body 15 at the end in the opening direction, and the push claw 1 rises and hits the machine body 16 (see Fig. 12), and the motor is stopped and the claw box K is moved back to its original position.
This will stop the movement of the As a result, the claw box K is placed on standby at the end in the opening direction for the next opening operation. At this time, as the movable lid 9 is returned to its position, the seesaw member 7 is also moved and returned to its position via the pin 8, so that the engaging portion 7b comes into contact with the pawl 2 and the engaging portion 7
A moves upward and returns to the position shown in Fig. 3. According to this example, the opening operation of the plate by the pawl device is the same as before, but since the pawl 2 is not biased to stand up by the spring, it pushes the opened plate again and returns to the closing direction. This will not cause any problem and will not interfere with the automatic opening operation. However, since the pawl 2 also needs to stand up, a seesaw material 7 as in this example is used to create a seesaw-like configuration in which the push pawl 1 is made to stand up when it falls down.

Although this example is configured as described above, the present example is not limited to this. For example, the shapes of the prongs and the pushing claws do not matter. In addition, the material of the seesaw material is made of steel plate,
It may be made of plastic or the like. Furthermore, the connection structure between the seesaw material and the movable lid is appropriate, and as shown in FIG. A vertically elongated hole 18b transparently provided in the arm 18a of the lid 18
It may also be configured to engage with. According to this, as the movable cover 18 moves, the pin 17a is guided to the elongated hole Kb and positioned at the lower end of the elongated hole 18b as shown in FIG. is separated from the claw, and the claw is in a state where it does not interfere with the lodging of the claw. In short, the present invention consists of connecting a pawl box equipped with a push pawl and a main pawl that face each other to a chain or the like and running it on a rail. The plate is moved and opened by being hooked by a pusher claw that is biased to stand up and rotate by a lever, etc., and is equipped with a movable movable lid that prevents the pusher claw of the claw box from rising. The movable lid and the seesaw material are connected by movably supporting the movable lid and the seesaw material, placing and engaging the pushing claw on one engaging part of the seesaw material, and placing the claw on the other engaging part. A plate opening claw device for a plate-type overpass machine, characterized in that when the movable lid moves and the pushing claw is erected, the seesaw material is moved so that the other engaging part is separated from the pushing claw. It is.

Therefore, according to the present invention, the plate can be opened smoothly without pushing back the opened plate with the pawl, and since the seesaw material also moves as the movable lid moves, there is no problem in the collapse of the pawl when heading in the direction of opening the plate. It is a practical idea that has the effect of not having to open the board, and allows for smooth automatic opening of the board.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the operating state of a conventional claw device, Fig. 2 is a side view showing an embodiment of the present invention, Fig. 3 is a longitudinal sectional view thereof, and Fig. 4 is a plan view thereof. 5 to 12 are longitudinal sectional views showing the operation of the pawls, FIG. 13 is a side view of another example, and FIG. 14 is a side view of the seesaw material in a state in which it is moved. 1: Pressing claw, 2: This claw, 3, 4: Pin, 5: Spring, 7, 17: Seesaw material, 7a, 7b, 17
b: Engagement part, 8, 17a: Pin, 9, 18: Moving lid, 9a, 18a: Arm, K: Claw box, Ka,
Kb: Long hole, 17a: Longitudinal hole.

Claims (1)

[Scope of utility model registration request] A claw box equipped with a pushing claw and a main claw that can be rotated to fall down and stand up is connected to a chain or the like and run on a rail, and the support piece of the plate located between the claws is supported by a spring or the like. In a device in which the board is moved and opened by being hooked by a pushing claw that is biased to stand up and rotate, and the claw box is equipped with a movable movable lid that prevents the pushing claw from standing up, the seesaw material is placed between the pushing claw and the claw. The seesaw material is movably supported, and the pushing claw is placed and engaged with one of the engaging parts of the seesaw material, and the claw is placed on the other engaging part, and the movable lid and the seesaw material are connected. 1. A plate opening claw device for a plate-type overpass machine, characterized in that when the lid moves and the pushing claw is erected, a seesaw material is moved so that the other engaging part is separated from the pushing claw.