JPH0752172Y2 - Connection mechanism between door body and valve rod in water control door - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water control door in which a door body is attached to a front surface of a frame-shaped main body so as to be able to move up and down to control a water amount.

[0002]

2. Description of the Related Art FIG. 4 is a front view of a typical water control door.
The water control door 1a is guided by the guide portions 3a on both sides of the frame main body 2a to incorporate a vertically movable door body 4a, and the upper surface of the door body is connected to the valve rod 5a, and the upper portion of the valve rod is the opening / closing device 6a. It is screwed and connected. Now, when the handle 61a of the opening / closing device 6a is rotated, this rotation is converted into an action of pulling the valve rod 5a upward or downward by a screw mechanism.
The door body 4a is guided by the guide portion 3a of the frame-shaped main body 2a to ascend and descend to adjust the amount of water by increasing or decreasing the opening area.

Focusing on the connection mechanism at the upper and lower parts of the valve stem, the upper part of the valve stem is engraved with a male screw and screwed with a female screw of the opening / closing device. On the other hand, the lower part is connected to the door body 4a by a connecting mechanism 7a as shown in FIGS. That is, the upper surface 4 of the door body
1a with a bifurcated bracket 71a and bolts 71a, 72b
Reamer pin 73a common to both sides by fitting the lower part 51a of the valve rod 5a into the fork of the bracket 71a.
A mechanism for penetrating through and fastening with a nut 74a has been continued for a long time. In addition, in FIG. 4, a steady rest 52a, a coupling 53a and the like are also attached as members related to the valve rod 5a.

[0004]

[Problems to be Solved by the Invention] In FIG.
Considering the buckling strength against the compressive load as a single column constrained at the top and bottom, the male screw and the female screw are screwed and connected at the upper part, so this state is almost fixed connection (material This is in the meaning of a mechanical term.
While the lower part is a connection by one reamer pin, it is obviously a rotary connection (a connection that can rotate around the pin). In other words, the valve stem in this case must be connected to the upper and lower members by a connection mechanism with one end fixed and the other end rotating, to counter the load. However, due to the material mechanics, this mechanism has about half the seat size. It has been proved that there is only flexion strength. Therefore, each member forming the cross-sectional area of the valve rod and the connecting portion must be designed after sufficiently calculating this, and there remains a problem that the demand for weight reduction and size reduction cannot be met.

Furthermore, in the case of the conventional connecting mechanism 7a as shown in FIGS. 5A and 5B, since the connection between the valve rod and the door body is through one reamer pin, the frame Since the door body guided by the guide portion of the main body can be fastened even if it is slightly inclined with respect to the axis of the valve rod, the vertical direction of the door body and the axial direction of the valve rod do not match. There is a possibility of connection. If the valve rod is pushed down in order to lower the door in such a state, the door may lower in a tilted position in the guide section, resulting in poor sealing, and uneven load may cause unreasonable stress or distortion. There is also.

In order to solve the above-mentioned problems, the present invention improves the buckling strength of the valve rod and completely connects the axis of the valve rod and the ascending / descending direction of the door body. For the purpose of providing.

[0007]

A connecting mechanism for a door body and a valve rod in a water control door according to the present invention has a plurality of brackets fixed to the upper surface of the door body and commonly extending through the bracket and the valve rod. The above problem was solved by connecting with a reamer pin.

[0008]

Since the connecting relationship between the valve rod and the door body is formed by a plurality of reamer pins, there is no room for rotation around the pins, and the conventional rotary connection is changed to fixed connection. Further, if the ascending / descending direction of the door body and the axial direction of the valve rod do not match, the two cannot be connected, and by connecting, the ascending / descending direction of the door body coincides with the axial direction of the valve rod.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The water control door to which the present invention is applied has the same basic structure as that of the prior art, and there is no difference from that described with reference to FIG. The feature of the present invention resides in the connection mechanism that connects the valve rod and the door body. FIGS. 1 (a) and 1 (b) are a vertical sectional front view and a vertical sectional side view showing only the connecting mechanism 7, respectively.
Shows a state in which the door body 4 is incorporated in the frame-shaped main body 2. Valve rod 5 screwed to the opening / closing device (see Fig. 4) of water control door 1 at the upper part
The lower part 51 of each of the two reaming pins 73A and 73B is fitted into the fork of the bracket 71 of the connecting mechanism 7.
Pass through both and are fastened by nuts 74A and 74B. On the other hand, the lower portion of the bracket 71 is fastened to the upper surface 41 of the door body by two bolts 72A and 72B. As a result, the connection between the valve rod 5 and the door body 4 has a fixed structure that does not allow rotation.

[0010]

[Effects of the Invention] Since the valve body and valve rod connection mechanism of the water control door of the present invention improves the buckling strength of the valve rod about twice as much as the conventional one, the diameter of the valve rod is smaller than the conventional one.

[Equation 1] And about the weight,

[Equation 2] The weight can be reduced to a certain degree. Along with this, related members such as couplings and steady rests can be reduced in weight and size.

Furthermore, since the relative position between the valve rod and the door is specified and all the variable elements are cut off, the vertical direction of the door and the axial direction of the valve are completely coincident with each other, and the door is closed when fully closed. Problems such as tilting and poor sealing, and biasing compressive force during descent that causes excessive stress and distortion are eliminated.

[Brief description of drawings]

1A and 1B show a vertical sectional front view and a vertical sectional side view of an embodiment.

FIG. 2 is a front view showing a state where a door body is incorporated in the frame-shaped main body of the embodiment of FIG.

FIG. 3 is a vertical sectional side view showing the same state as in FIG.

FIG. 4 is a front view showing the entire water control door.

5A and 5B show a vertical sectional front view and a vertical sectional side view of a conventional technique, respectively.

[Explanation of symbols]

1 water control door 2 frame main body 4 door body 5 valve rod 7 connection mechanism 41 upper surface of door body 51 lower portion of valve rod 71
Bracket 73A, 73B Reamer pin

Claims (1)

[Scope of utility model registration request] 1. A connection mechanism in a water control door, which connects a lower portion of a valve rod screwed with an opening / closing device at an upper portion to a door body,
A mechanism for connecting a door body and a valve rod in a water control door, characterized in that a bracket is fixed to the upper surface of the door body, and the bracket and the valve rod are connected by a plurality of reamer pins that pass through in common.