JPH0426513Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a hydraulic gate that opens and closes the spout of a dam, etc. with a door body connected to a hydraulic cylinder, and maintains the door body in an open state. This relates to a pause device used when

(Prior art) In the case of a gate using a hydraulic cylinder, if the gate body is kept pulled up by the hydraulic cylinder, a load is applied to the piston rod due to the gate body's own weight.
Oil movement in the cylinder before and after the piston and oil leakage from the check valve in the hydraulic unit are unavoidable.
The door body gradually descends under its own weight in the direction of closing. To deal with this, an example of a suspension device shown in FIG. 5 is known. This conventional device has a leaf spring 17 protruding from the door body 2 in parallel with the piston rod 6, a pawl 18 hanging from the tip of the leaf spring 17, and a pawl 18 on the embankment surface on which the door body 2 slides. A stopper 19 for locking is provided.

(Problems to be solved by the invention) In the above-mentioned conventional stop device, when the hydraulic cylinder is driven forward, the pawl is pulled out from the stopper and the stop action is released. When pulled up by the drive,
The pawl touches the stopper, but the leaf spring flexes and the pawl springs up and engages with the stopper. However, since it takes place underwater,
In reality, it is difficult to accurately grasp the coefficient of friction, etc., and it is difficult to set the appropriate spring force to act, making it difficult to reliably prevent the product from falling due to its own weight. The present invention was developed to solve the above problems.

[Structure of the idea]

(Means for solving the problem) The suspension device according to the present invention is provided with a locking mechanism that suspends the door body with a hook in the raised position of the door body, and connects the door body and the rod of the hydraulic cylinder with a long hole. The locking mechanism is connected to the rod via a floating mechanism using a pin, and a releasing mechanism is provided in the floating section of the rod to lock and release the locking mechanism using a cam and a cam contact.

(Embodiment) The present invention is embodied by an embodiment shown in the drawings, and as shown in Figs. 1 and 2, a spout 1 is opened on the slope of a concrete embankment.
In a hydraulic gate that opens and closes the spout 1 by sliding the door body 2 up and down by a hydraulic cylinder 3 along the slope, the door body 2 is raised to a position where the spout 1 is fully opened. The locking mechanism 4 has a hook 5 pivotally attached to the upper end of the surface of the door body 2 so as to be able to slide up and down. , the door body 2 is held in the raised position by installing a resting rod 7 intersecting with the rod 6 and locking the hook 5 to the resting rod 7. Further, the door body 2 and the rod 6 of the hydraulic cylinder 3 are connected via a floating mechanism 8, and the floating mechanism 8 has a long elongated hole 9 bored in the tip of the rod 6 along the longitudinal direction. , door body 2
A bottle 11 passing through a long hole 9 is supported on a bracket 10 protruding from the door, and when the hydraulic cylinder 3 is driven, the rod 6 moves only in the section of the long hole 9 and stops driving the door body 2. . Furthermore, a release mechanism 12 is provided in this floating section, and the release mechanism 1
2 is a cam surface 13 at the base on the back surface of the hook 5 that slopes diagonally downward as it goes toward the base.
A cam contactor 14 is provided at the tip of the rod 6 in an upright manner.

The lower surface of the tip of the hook 5 is inclined and wedge-shaped, and the hook 5 is projected almost horizontally by a spring 15 or a stopper, and is prevented from flipping onto the door body 2. It is preferable to keep it.

The operation of opening, closing, and resting the door body 2 in the above embodiment will be explained from the closed state as shown in Fig. 2E. When the hydraulic cylinder 3 is driven in the direction to pull up the door body 2, Only the elongated hole 9 is moved back, and the door body 2 starts to be pulled up after the pin 11 is positioned at the tip of the elongated hole 9 as shown in Figure A. At this time, the hook 5 is projected almost horizontally. Hook 5
When the door body 2 comes into contact with the resting rod 7, the tip of the hook 5 is inclined, so as the door body 2 rises, the hook 5 climbs over the resting rod 7, as shown in Figure B, and due to the hook's own weight or spring force. When the hook returns to the horizontal state, the drive of the hydraulic cylinder 3 is stopped. At this time, the hook 5 slightly rises above the resting rod 7 and stops, but due to the lowering of the door body 2's own weight, the hook 5 locks on the resting rod 7 as shown in Fig. C and maintains the resting state.

Next, when the spout 1 is closed with the door body 2, the hydraulic cylinder 3 is driven forward, but initially only the rod 6 moves forward over the length of the elongated hole 9, and during that time, due to the relationship between the cam contactor 14 and the cam surface 13, As shown in Figure D, the hook 5 rises to disengage from the resting rod 7, and at this time the pin 11 is located at the end of the elongated hole 9, so the door body 2 descends as the rod 6 moves forward, and As shown in the figure, the spout 1 is closed.

Next, in the embodiment shown in FIG. 4, the stop lever 7 of the locking mechanism 4 is fixed to the door body 2, and the hook 5 is pivotally connected to a bracket 16 that stands up from the embankment. Further, the door body 2 and the rod 6 are connected via the floating mechanism 8 as in the above example, and the release mechanism 12 has a cam contactor 14 hanging down from the hook 5 toward the rod 6. A chevron-shaped cam surface 13 is provided.

In this case as well, when the rod 6 moves forward, the hook 5 is initially removed from the resting rod 7, and then the door body 2 is lowered. Further, as the rod 6 retreats, the door body 2 rises, and the cam surface 13 and the cam contact 14 cause the hook 5 to rise one step; however, after the resting rod 7 passes below the hook 5, the rear of the hook again It descends and locks onto the resting rod 7.

(Effects of the invention) The hydraulic gate suspension device according to the invention has a locking mechanism using a hook and a suspension rod, a floating mechanism that connects the door body and rod with a long hole and a pin, and a locking mechanism that uses a cam surface and a cam contactor to lock the gate. and a release mechanism that removes the stopper from the stopper rod, and because the stoppage and release are performed by a mechanical mechanism, there is no malfunction and reliable operation is achieved even when underwater. Furthermore, the structure is simple and can be easily attached to ready-made hydraulic gates. Furthermore, when the machine is at rest, the door body is rested by the hook and the rest rod, and since there is a floating mechanism between the door body and the rod, the weight of the door body does not affect the hydraulic cylinder while the machine is at rest. This can improve safety.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the suspension device for a hydraulic gate according to the present invention, Fig. 2 is a plan view thereof, and A in Fig. 3.
Figures 1 to E are cross-sectional views showing the door body's resting and release actions, Figure 4 is a cross-sectional view of a similar example according to the present invention, and Figure 5 is a cross-sectional view of a conventional example. 1... spout, 2... door body, 3... hydraulic cylinder, 4... locking mechanism, 5... hook, 6... rod, 7... resting rod, 8... floating mechanism, 9... length Hole, 11... Pin, 12... Release mechanism, 13...
Cam surface, 14...cam contactor.

Claims (1)

[Scope of utility model registration request] A locking mechanism 4 for stopping the door body 2 with a hook 5 is provided at the raised position of the door body 2 where the spout 1 is opened and closed by the hydraulic cylinder 3. An idler mechanism 8 is interposed in which the initial driving force of No. 3 is not transmitted to the door body,
A suspension device for a hydraulic gate, characterized in that a release mechanism 12 for engaging and disengaging the hook 5 is provided during the movement section of the rod 6 by the movement mechanism 8.