JPS6115067Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gate hoisting machine that raises and lowers a gate using a transmission mechanism that includes a screw-type rotating rod.

[Conventional technology]

Conventionally, screw screw type gate winding machine has 1
A set of screw-screw spilldles is used to control the gate from fully closing to fully opening with a constant screw pitch.

[Problem that the invention attempts to solve]

For this reason, with conventional gate hoisting machines, it takes a lot of time to open and close the gate, which puts a heavy burden on the gate administrator, and the water pressure applied to the gate changes when raising and lowering the gate from fully closed to fully open and vice versa. Despite this, the structure was not designed to accommodate these changes, resulting in uneconomical movements and energy consumption.

This invention aims to eliminate these conventional drawbacks, and focuses on the fact that the water pressure applied to the gate gradually decreases as the gate goes from fully closed to fully open. The purpose of this invention is to provide a gate winding machine that can be operated up and down in a simple and inexpensive form.

Another purpose of the present invention is to provide a gate hoist that can increase the gate lifting speed by changing the speed to approximately 1.5 to 2 times that of conventional screw-screw type gate hoisting machines, thereby saving labor by shortening the gate lifting time. It is to do so.

[Means for solving problems]

The present invention provides a gate winding machine equipped with a spilldle 1 that axially connects an upper rod 6 that is rotatable around an axis by a drive mechanism and a lower rod 9 that is movable in the axial direction. An upper screw 1a and a lower screw 1b having different lead angles are attached to the spilldle 1 which is approximately divided into two in the longitudinal direction.
The gate is characterized in that an upper female screw 7 is formed on the upper rod 6 to be screwed into the upper screw 1a, and a lower female screw 8 is formed on the lower rod 9 to be screwed into the lower screw 1b. It is a winding machine.

〔Example〕

To explain based on one embodiment shown in the drawings,
A spilldle 1 for raising and lowering the gate is formed by dividing an upper screw 1a and a lower screw 1b into two vertically by a flange-shaped stop ring 2. and,
Regarding the lead angle of these screws, that is, the angle formed by the helical line of the screw thread and a plane perpendicular to the axis of the screw passing through one point above it, the upper screw 1a and the lower screw 1
b and are formed to be different from each other,
In this example, the lead angle of the upper screw 1a is set to the lower screw 1b.
It is made larger than that of . This Spilldol 1
An upper rod 6 and a lower rod 9 are threadedly connected to an upper screw 1a and a lower screw 1b, respectively, via an upper female thread 7 and a lower female thread 8.

The upper rod 6 is connected to a drive mechanism, and this drive mechanism rotates the upper rod 6 which is key-coupled to the bevel gear 5 via the pinion gear 4 and the bevel gear 5 by rotating the manual handle 3. An upper female screw 7 is provided at the lower end of the upper rod 6 and rotates together with the upper rod 6.

On the other hand, the lower rod 9 is fixed to the upper part of the gate, and a lower female screw 8 is provided at its upper end, into which the lower screw 1b of the spilldle 1 is screwed.

Incidentally, stoppers 10 and 11, for example, flange-shaped stoppers, are attached to the upper and lower tips of the spilldle 1, respectively, to prevent the gate lifting/lowering spilldle 1 from coming off during the gate lowering operation.

In the figure, reference numeral 12 is a casing fixed to the stand 13 to protect the spilldle and the like from the outside world. 14 is a gear box in which the pinion gear 4 and bevel gear 5 are housed. 15 is a cap, and 16 is a bearing.

In place of the stop ring 2, a non-threaded portion may be provided on the spindle 1 to serve as a stop portion separating the upper thread 1a from the lower thread 1b, and if necessary, a ratchet mechanism may be appropriately interposed in the drive transmission section to provide an anti-slip structure.

When winding up the gate, the rotational force of the manual handle 3 is transmitted to the pinion gear 4 and bevel gear 5, and the upper female thread 7 is rotated together with the upper rod 6 which is keyed to the bevel gear 5. do. At this time, the torque required to rotate the screw is the upper screw 1a in the case of winding.
Since the lead angle of the lower screw 1b is larger than that of the lower screw 1b, the required torque for the upper screw 1a is larger than the required torque for the lower screw 1b. Therefore, the spilldle 1 with the upper screw 1a is fixed to the upper female screw 7, and the upper rod 6, and the lower female screw 8 begins to rise from the gate fully closed position shown in FIG. 1 together with the lower rod 9 fixed to the upper part of the gate before the upper screw 1a. The lower rod 9 in the raised state is connected to the upper screw 1 as shown in Figure 2.
When it hits the stop ring 2 installed between the lower screw 1b and the lower screw 1b, it stops rising.

After that, the spilldle 1 with the upper screw 1a, which had been fixed to the upper female screw 7 and stopped rising, moves inside the upper rod 6 faster than when the lower rod 9 lifts the spindle 1 with the lower screw 1b. When the gate starts to rise at a high speed and eventually the stop ring 2 collides with the upper rod 6 as shown in Fig. 3, the rise of the spilldle with the upper screw 1a also stops, and this two-stage operation allows the gate to be fully opened. is set to .

Next, to explain the operation when lowering the gate, when lowering the gate, the required torque for screw rotation of the upper screw 1a with a large lead angle becomes the required torque of the lower screw 1b with a small lead angle, contrary to the case when raising the gate. It becomes smaller in comparison.

Therefore, by lowering and rotating the manual handle 3, the lower female screw 8 is now fixed to the spilldle 1 with the lower screw 1b, and the spillle 1 with the upper screw 1a is first fixed to the upper rod. 6
The robot descends from the gate fully open position shown in Figure 3 at a high speed.

Eventually, when the stopper 10 attached to the upper end of the upper screw 1a collides with the upper female screw 7 as shown in Fig. 2, the descent of the spilldle 1 is stopped, and then it is fixed to the lower screw 1b and stops descending. When the lower female screw 8 that was being lowered descends together with the lower rod 9, and the lower female screw 8 hits the stopper 11 attached to the lower end of the spilldle 1 as shown in Fig. 1, the lower rod 9 also stops lowering, and the lower rod 9 is lowered. In this case, the gate is also set to be fully closed by these two steps of operation.

Therefore, since the screw with a small lead angle rotates when the gate is in the lower position, where more water pressure is applied, it is possible to smoothly wind up and unwind without applying special force.

[Effect of idea]

The present invention uses a gate winding machine, in which a freely rotatable spilldle is divided into approximately two halves in the longitudinal direction via a stop ring, and the two halves are provided with an upper screw and a lower screw with different lead angles, and screwed into the two halves. By connecting the upper and lower rods with matching upper and lower female threads, it is possible to operate the gate by applying an average force from beginning to end when raising and lowering the gate.
Since the gate can be raised and lowered quickly and functionally, it does not put a burden on the operator, and it is simple and inexpensive, making it extremely useful in practice.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal cross-sectional view of the gate in a fully closed state, Fig. 2 is a longitudinal cross-sectional view of the gate in a half-open or half-closed state, and Fig. 3 is a longitudinal cross-sectional view of the gate in a fully open state. be. 1...Spildle for raising and lowering the gate, 1a...Upper screw, 1b...Lower screw, 2...Stop ring,
3...Manual handle, 4...Pinion gear, 5
...Bevel gear, 6...Upper rod, 7...Upper female thread, 8...Lower female thread, 9...Lower rod, 10, 11...Stopper.

Claims (1)

[Claims for Utility Model Registration] 1. In a gate winding machine equipped with a spillle 1 that axially connects an upper rod 6 that is rotatable about the axis by a drive mechanism and a lower rod 9 that is movable in the axial direction. , the spilldle 1 is roughly divided into two in the longitudinal direction, an upper screw 1a and a lower screw 1b with different lead angles are formed on the divided spilldle 1, and an upper female screw 7 is screwed into the upper screw 1a. A gate winding machine characterized in that a lower female thread 8 is formed on the upper rod 6 and on the lower rod 9 to be screwed into the lower screw 1b. 2. The gate winding machine according to claim 1, wherein the spilldle 1 is provided with a plunge-shaped stop ring 2 between the upper screw 1a and the lower screw 1b. 3. The gate winding machine according to claim 1 or 2, wherein the spilldle 1 is provided with flange-like stoppers 10, 11 having a diameter at least larger than the diameter of the spilldle at both ends. 4. The gate winding machine according to any one of claims 1 to 3, wherein the spilldle 1 is disposed internally in a casing 12 provided on a stand 13.