JPH0624016U - Opening / closing mechanism of water control door with sub water control door - Google Patents

Abstract

(57) [Summary] [Purpose] The operation of the secondary water control door is protected from failure. [Structure] The main screw shaft 46 is engaged with the drive device 4 at the upper side, and is connected to the main door body 2 at the lower side. A sub shaft 47 is integrally provided below the main screw shaft, and the sub shaft and the sub door body 3 are fixed to each other. A play S having a length substantially equal to the opening / closing stroke of the sub door is provided in the connection between the main screw shaft and the main door. [Effect] The auxiliary shaft for driving and the auxiliary door are not connected with each other by a screwing relationship, and the structure is simple, and a failure due to water quality such as polluted water hardly occurs.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an opening / closing mechanism of a water control door that opens and closes a main water control door and a sub water control door by one shaft operation to adjust the flow rate of a water channel.

[0002]

[Prior art]

 Of the doors that adjust the flow rate by being fitted in the main body attached to the floodgate so that it can be moved up and down, the main water control door (hereinafter referred to as the main door) is provided with an opening. A composite water control door that has a sub water control door that opens and closes the door (hereinafter referred to as a sub door) is also called a so-called parent-child gate, and is widely applied for fine adjustment when opening and closing the water gate. However, in order to move the main and sub doors up and down, compared to the case of a single door, the drive mechanism becomes more complicated in order to control the opening and closing amount and timing of opening and closing, and this point is one of the issues. Came.

One of the conventional techniques proposed to solve this problem is Japanese Utility Model Publication No. 57-46423. As shown in FIG. 6, the operating gear 103 meshes with the driving gear 102 that is rotated by the driving shaft 101, the main screw shaft 46a is screwed into the operating gear 103, and the main screw shaft 46a is axially grooved 104. A clutch 106 having a protrusion 105 that is engraved with the groove 104 and is fitted in the groove 104 is selectively and detachably provided to either the actuating gear 103 or the fixed seat 108 by a clutch switching device 107. The main screw shaft 46a is rotatably connected to the main screw shaft 2a, the sub door member 3a is vertically hung on the main door member 2a, and the sub screw shaft 47a is integrally provided on the lower end of the main screw shaft 46a. The auxiliary door shaft 3a is screwed onto the auxiliary screw shaft.

In this prior art, in order to adjust the flow rate of the water channel by opening and closing the main door, the clutch switching device 107 is operated to move the clutch 106 upward and fix it to the fixed seat 108, and then the drive shaft 101. Is rotated to rotate the operating gear 103 via the drive gear 102. At this time, since the projection 105 that fits into the groove 104 of the main screw shaft 46a is fixed, the main screw shaft 46a does not rotate, and the main screw shaft 46a screwed into the operating gear 103 moves up and down. The door 2a is moved up and down. Next, in order to open and close the sub door 3a to finely adjust the flow rate, the clutch switching device 107 is operated to move the clutch 106 downward and engage the operating gear 103, and then the drive shaft 101 is rotated. Then, the operating gear 103 rotates via the drive gear 102. At this time, since the clutch 106 fitted in the groove 104 of the main screw shaft 46a is integrated with the operating gear, the main gear shaft 46a operates as the operating gear. The auxiliary screw shaft 47a, which is integral with the main screw shaft 46a, also rotates at the same time as the main screw shaft 46a. Since the sub door body 3a is screwed onto the sub screw shaft 47a, the sub door body 3a is raised and lowered with this rotation, and the flow rate can be finely adjusted by opening and closing the opening of the main door body.

[0005]

[Problems to be solved by the device]

 It is stated that this prior art aims to improve the drive mechanism required for opening and closing the main door body and the sub door body to a simple structure. However, in this configuration, when the sub door is lifted and lowered, the sub door that engages with the sub screw shaft moves up and down when the sub door is immersed in the water channel. In the sewage and irrigation canals that are used, the solid content is caught in this screwed part, and there is a great concern that the sub-door cannot be moved up and down. Further, although the structure is simpler than the conventional one, it cannot be said that the structure is simple because a clutch and its switching device are required, and a structure in which operation and maintenance are further simplified is desired.

In order to solve the problems described above, the present invention aims to provide an opening / closing mechanism for a water control door that does not adversely affect the quality of water in the operation of the sub door body and has a simple structure and that can always operate without hindrance. To do.

[0007]

[Means for Solving the Problems]

 An opening / closing mechanism for a water control door having a sub water control door according to the present invention engages a main screw shaft 46 with an upper drive device 4 in a vertically movable manner, and connects the main door screw shaft 46 to a lower end of the main screw shaft 46. By integrally providing an auxiliary shaft 47 for fixing 3 and connecting the main screw shaft 46 and the main door body 2 with a play S having substantially the same length as the opening / closing stroke of the auxiliary door body 3, The above problems have been solved.

[0008]

[Action]

 In the case of increasing the flow rate from the small flow rate to the high flow rate in the flow rate adjustment, the main screw shaft 46 starts to rise when the drive device is operated in the opening direction from the closed state of the main and sub door bodies. However, since the main screw shaft 46 and the main door body 2 are connected with the play S having a length substantially equal to the opening / closing stroke of the sub door body 3, even if the main screw shaft 46 starts to move upward Only the sub door body 3 that is integrally fixed to the main screw shaft 46 starts, and the sub door body 3 is lifted until the opening O is fully opened, and then the main door body 2 is started. Begins to rise, opens the channel, and moves from a small flow to a large flow. On the other hand, when changing from a large flow rate to a small flow rate, the drive device 4 is operated in the closing direction and the main screw shaft 46 is lowered. First, the main door body 2 begins to close, and the main door body 2 is in a fully closed state. After that, the sub door body 3 also starts to close, the opening O is closed, and both the main and sub door bodies are fully closed, and the flow rate is reduced from a large flow rate to a small flow rate.

[0009]

【Example】

 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front view, and FIG. 3 is an enlarged view of a main part of the invention in FIG. The main body 1 of the opening / closing device is fitted and attached to the water gate G, and the main door body 2 moves up and down along guides 11 standing on both sides of the main body 1 to open and close the water passage W. On the other hand, the sub door body 3 moves up and down along the guide 21 provided on the main door body to open and close the opening O, thereby performing a fine adjustment role. The drive device 4 moves up and down both the main and sub doors, and the drive body 41 is supported by the stand 42 on the floor F constructed above the body 1. The drive body 41 has an internal thread piece 43 therein, and when the handle 44 on the side surface is rotated, the internal thread piece 43 rotates. A main screw shaft 46 in which a male screw 45 screwed into the female screw piece 43 is engraved on the upper side is hung downward, and is connected to the main door body 2 under the main screw shaft 46. FIG. 3 is an enlarged view showing the connection mode in detail. In the figure, a play S having a length substantially the same as the opening / closing stroke of the sub door body 3 is vertically maintained in the block case 22 attached to the main door body 2. Since a means for fixing the block 23 accommodated in the main door body 2 to the main door body 2 with the pin 24 is adopted, the main door body 2 substantially has a play of opening / closing stroke of the main screw shaft 46 and the sub door body 3. It is in a connected state. An auxiliary shaft 47 is integrally connected to the lower end of the main screw shaft 46 and extends downward, and is fixed to the auxiliary door body 3 in the block case 31 via the block 32 and the pin 33. In addition, in FIG. 2, a wedge metal fitting 25 for adhering the main door body 2 to the main body 1 for a water seal when the main water control door is closed, and a water seal when the sub water control door is closed For this reason, there is a wedge metal fitting 34 for closely contacting the sub door body 3 to the main door body 2, and the upper limit stopper 12 and the lower limit stopper 13 of the main door body 2 are also shown in the figure.

When the handle 44 of the drive device is rotated in the opening direction from the fully closed state of FIG. 1, the female screw piece 43 in the drive body is rotated and the main screw shaft in which the female screw piece and the male screw 45 are screwed together. 46 rises. However, since the main screw shaft 46 and the main door body 2 are connected to each other with a play S having a length substantially equal to the opening / closing stroke of the sub door body 3, the main screw shaft 46 and the sub shaft 47 integrated with the main screw shaft 46 are first connected. The fixed sub door body 3 starts to rise and opens the opening O, and only the sub door body is fully opened as shown in FIGS. 4 (A) and 4 (B). When the main screw shaft 46 further rises from this state, the play S has already been used up, so the main door body 2 begins to rise, and the main door body is fully opened as shown in FIGS. 5 (A) and 5 (B). The flow in the canal will increase significantly.

On the contrary, in order to reduce the flow rate from the large flow rate shown in FIG. 5, when the handle 44 of the drive device is rotated in the closing direction, the female screw piece 43 is rotated in the closing direction, and the main screw shaft 46 is lowered, and first. When the main door body 2 begins to close and reaches the state of FIG. 4, and further rotation in the closing direction continues, the sub door body 3 also descends and closes the opening O, and the large flow rate becomes a small flow rate.

[0012]

[Effect of device]

 The present invention has the above-mentioned configuration, and since the sub door and the sub shaft are not engaged with each other in a screwed state in adjusting the flow rate, even if the water passing through the sluice is polluted sewage, There is no concern that it will hinder the opening and closing of the sub door. Therefore, maintenance of the device is easy, failure does not easily occur, and a long service life can be obtained. On the other hand, the structure of the device is simple, and there is no need for a clutch and its switching device as in the prior art. In addition, the drive system for the water control door, which was not equipped with a sub door in the past, can be used as it is. There is also a positive effect.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a front view of the same embodiment.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a front view (A) and a side sectional view (B) showing a state in which only a sub door body of the embodiment is fully opened.

FIG. 5 is a front view (A) and a side sectional view (B) showing a state in which the main door body is also fully opened.

FIG. 6 is a vertical sectional front view showing a conventional technique.

[Explanation of symbols]

 1 Main body 2 Main door body 3 Sub door body 4 Drive device 46 Main screw shaft 47 Sub shaft

Claims (1)

[Scope of utility model registration request] 1. A water control door having a main water control door for opening and closing the water gate G, having an opening O formed therein, and a sub water control door for opening and closing the opening O. Of the main screw shaft 46 is integrally provided with a sub shaft 47 for fixing the door body 3 of the sub water control door to the lower end portion of the main screw shaft 46. An opening / closing mechanism for a water control door having a sub water control door, characterized in that the door body 2 is connected with a play S having a length substantially equal to the opening / closing stroke of the sub water control door body.