JPS6332014A - Elevator for sluice gate - Google Patents

Abstract

PURPOSE:To simplify the structure of an elevator for sluice gate by a method in which a manual handle is fixed to the basal end, a prime mover shaft is pivotally and sladably supported, and a drive shaft is connected with a clutch for vertically moving the sluice gate by forming screws fittable to the multiple thread screws of the prime mover shaft. CONSTITUTION:A frictional face 13a to be contacted with or separated from a ratchet wheel 14 is formed on the tip of a prime mover shaft 13 whose basal end is fixed with a manual handle 3, and a multiple thread screw 13b is pivotally and slidably supported near the opening of the face 13a. An intermediate shaft 17 with a multiple thread screw 17a on the portion to be coupled with the female screw 13b is combined on the tip in a freely turnable and slidable manner by the bearing 19 of the drive side claw clutch 21. The clutch 18 is connected to the drive shaft 6 to transmit rotation force by engaging and separation with the basal end of the drive clutch 18 located on the tip face of the prime mover side clutch 21. Exact position can thus be easily determined with high safety.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is capable of rotating a driving shaft by operating a handle, raising and lowering a rack rod via a gear train, and quickly closing the rack rod without rotating the handle in an emergency. This relates to a water gate lift device that allows for

<Prior art and its problems> This type of lifting device is required to be easy to operate and safe, and in order to improve safety, it is necessary to use water in emergencies such as floods. The majority of gates now have handles that do not rotate even when the gate is rapidly closed by its own weight. As such a type of device, for example, Japanese Patent Publication No. 58-55288 and Japanese Patent Publication No. 58
There is a device shown in Japanese Patent No.-58767. The device shown in the Japanese Patent Publication No. 58-55288 has a brake device handle in addition to the manual handle, and both handles must be operated together when raising and lowering the water gate in normal conditions. In the event of an emergency such as a flood, it is necessary to rotate the brake device handle and loosen the force on the brake tightening shaft, which makes the operation complicated and can lead to erroneous operation, especially in an emergency. Special Public Service 1987
The device disclosed in Publication No. 56767 maintains the clutch pawl provided on the clutch lever of the one-way clutch mechanism separated from the clutch pawl of the drive shaft when opening the water gate door, and also brakes the handbrake mechanism. Release by the handle and then rotate the operating handle in a given direction.

When lowering the water gate by its own weight, the brake handle is rotated in a predetermined direction to tighten the brake band, and in this state, the operating handle is rotated in the opposite direction. After removing the push tube from the male thread of the drive shaft, rotate the clutch lever counterclockwise. The brake band is then loosened from the brake body using the brake handle.

When closing by pushing the clutch lever, rotate the clutch lever clockwise. After the lever piece of the clutch lever hits the stopper piece protruding from the end face of the holding member, the clutch lever is rotated until it passes the stopper piece. Pull the lever toward you against the biasing force of the spring, and insert the lever piece of the clutch lever into the holding groove of the holding member. Thereafter, the operating handle must be rotated in the opposite direction.As expected, there are a total of three operating units, a clutch lever and two operating handles, and the overall operation is complicated. In other words, the above-mentioned conventional technology has a complicated structure and is difficult to maintain and inspect, is complicated to operate, and there is a risk of erroneous operation especially in an emergency. It is difficult to achieve this by just lowering the rack's own weight, and furthermore, since there is no safety device against overload, there are various problems such as the risk of buckling and bending of the rack rod due to excessive operating force. .

The present invention solves the above problems, has a simple structure, and is easy to maintain.
The object of the present invention is to provide a water gate lifting device that is not only easy to inspect and manage, but also easy to operate and highly safe.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides the following device, the gist of which is that a manual handle is fixed to the proximal end and the distal end is the friction surface of the friction clutch mechanism a. A driving shaft is supported rotatably and slidably in the axial direction in a bearing case, and a multi-thread female screw is formed near the opening end of a hole drilled from the tip side of the driving shaft to reduce the friction of the driving shaft. A spring is press-fitted between the face flange and a stopper formed to rotate together with the drive shaft so that the drive shaft can freely slide in the axial direction, and the base end of the spring is inserted freely into the hole drilled in the drive shaft. On the outer periphery of the intermediate shaft to be inserted in a fitted manner, a multi-thread male screw is formed at a portion corresponding to the multi-thread female screw, and a portion closer to the distal end by a required distance from the multi-thread male screw is formed at the tip. The cone portion is tapered toward the side, and a cone stopper is provided on the outer periphery of the distal end, and the cone stopper is tapered toward the distal end. , its tip is rotatably and axially slidably supported on the hollow inner surface of the drive-side pawl clutch which is fixed to the rotatable drive shaft, while the cone portion of the intermediate shaft and the periphery of the cone stopper are A driving side pawl clutch has a cone portion corresponding to the outer surface shape on its hollow inner surface, and its distal end surface pawl portion can freely engage with the proximal surface pawl portion of the drive side pawl clutch, and its proximal end surface is of the friction clutch mechanism a. The pawl wheel is disposed so as to form a friction surface, and a pawl wheel is loosely fitted on the proximal end side of the cone portion of the intermediate shaft, and is engaged with the pawl wheel so as to be able to swing freely, and together with the pawl wheel constitutes a ratchet mechanism. This water gate lifting device is characterized in that the proximal end of the pawl is pivotally attached to the clutch brake case by a pawl pin fixed to the clutch brake case, and the drive shaft is connected to a rack member for lifting and lowering the water gate.

<Embodiments and Operations> The apparatus of the present invention will be described in detail below with reference to the drawings showing embodiments of the present invention.

FIG. 1 shows a front view of an embodiment of the present invention, and the water gate lift device of the present invention has a manual handle (3) permanently installed on a mechanism (2) mounted on a stand (1). By rotating or moving back and forth, all the lifting and lowering operations of the water gate can be performed.

Figure 2 is a sectional view taken along line A-B-C-D in Figure 1, and
The figure is an end view taken along line E-E in Figure 2, and Figure 4 is an end view in Figure 2 F.
5 is a sectional view taken along the line G-G in FIG. 4, and as shown in these drawings, the mechanism (2
) The main operating section of the device of the present invention is housed in the bearing case (4) and the clutch/brake case (5) located on the upper right side of the main operating section. ) is incorporated, and the rotational force applied by the manual handle (3) is transmitted to the drive shaft (6) via the main operating section, and the gear train (7
), (8), and (9), the rack and pinion shaft (10), which is an element of the rack member, is rotated, and the rack and pinion (11) fixed to this rotates the rack rod ( 12) is moved up and down to raise and lower the water gate.

The configuration of the present invention will be described in detail below in the order in which force is transmitted from the manual handle (3) side to the rack rod (12).

As shown in Fig. 4, the tip of the driving shaft (13) to which the manual handle (3) is fixed on the proximal end side (right end side in the figure) is crimped with a pawl wheel (14), which will be described later, and is separated by a g-force. Surface (13a
), and a multi-thread female screw (13b) is integrally formed near the open end of the hole drilled from the tip surface. The driving shaft (13) is rotatably and axially slidably supported by a bearing mounted on the bearing case (4). A stopper (15) that comes into contact with the inner ring of the one near the tip of this bearing and is slidable between it and the drive shaft (13), and a friction surface flange (13c) of the drive shaft. A spring (16) is press-fitted between them, so that the driving shaft (I3) and the stopper (15) rotate together. One proximal end of such a driving shaft (13) is pushed through the hole of the driving shaft (13) in a loose fit and is screwed into the multi-thread female thread (13b) of the driving shaft (13). At the tip of the intermediate shaft (17), which has a multi-thread male screw (17a) carved therein, a drive-side pawl clutch (18), which will be described later, is connected to the intermediate shaft (17).
) are combined to be rotatable and slidable in the axial direction by means of a bearing (19) mounted inside. This intermediate shaft (17
) has a shaft portion in its center on which the pawl wheel ( ] 4) is loosely engaged, and also has a tapered cone portion (17b) forming a push-down clutch mechanism d, and further has a holding clutch mechanism at its tip. A flared cone stopper forming C (20
) and a threaded part for attaching a locking nut I for fixation. The cone portion (17) of such an intermediate shaft (17)
b) and a hollow drive-side pawl clutch (21) having an inner wall shape that allows for crimping or disengagement, corresponding to the cone shape of the cone stopper (20), is attached to the cone portion (17).
b) and the cone stopper (20), and the proximal end surface of the drive-side pawl clutch (21) faces the distal end surface side of the pawl wheel (14), and is pressed against and detached from the distal end surface. The friction surface (21) constituting the friction clutch mechanism a
a), and on the other hand, the distal end surface of the driving side clutch (21) has an inclined pawl together with the proximal end surface of the driving side clutch (18) disposed facing the driving side clutch (21), and the engagement and disengagement of both inclined pawls It is configured to transmit and non-transmit rotational force, and the drive shaft (6) described above is connected to the drive side clutch (18).

The pawl wheel (14) interposed between the tip friction surface (13a) of the driving shaft (13) and the proximal friction surface (21a) of the driving side pawl clutch (21) is connected to the intermediate shaft (17). The base end is pivotally connected to the claw pin (22) fixed to the clutch brake case (5) as shown in Fig. 5, and the distal end side is swingable. Ratchet mechanism b9 that engages with the pawl (23) due to its own weight!
It consists of In addition, the friction surfaces (1) of the pawl wheel (14), the driving shaft (13), and the driving side pawl clutch (21)
3a) and (21a), multi-threaded, female thread (17a),
(13b) and a cone stopper (20) constitute a friction clutch mechanism a. In addition, the above ratchet mechanism and g-friction latch mechanism a constitute a clutch brake mechanism ab, which transmits the hoisting torque and prevents its own weight from falling (
It performs various functions such as holding the load), lowering the dead weight, releasing the friction clutch, and braking when the dead weight falls.

Also, the cone portion (17b) of the intermediate shaft (17), the cone portion of the drive side pawl clutch (21), and the double thread screw (17a).
, (13b) and the spring (16) constitute a push-down clutch mechanism d, which transmits torque during forced unwinding and prevents the multi-thread screws (17a) and (13b) from rotating together during operation. . The holding clutch mechanism CII is formed by the cone stopper bar (20) and the cone part of the drive side pawl clutch (21).
When winding up, double-threaded screws (17a), (13b
) and transmission of winding torque,
It acts as a stopper to prevent the weight from dropping due to load torque, and as a stopper to release the double claw clutch (21) (1g). Also, both claw clutches (21
), (18) and a spring (16), the pawl clutch mechanism e functions to transmit driving shaft torque, transmit load torque, and prevent overload.

Note that the centrifugal brake device f provided on the opposite side of the manual handle (3) has a brake wheel (22) attached to the tip side of the drive shaft (6), a plurality of shoe pins (23) fixed to the brake wheel, A brake shoe (24) is loosely attached to the shoe pin so as to be able to freely swing in the radial direction, thereby controlling the acceleration when the vehicle's own weight is lowered.

Also in the figure, (25) is a rack rod guide, (26) is an opening meter for displaying the opening degree of the water gate door with a dial, and (27)
) is a lock chain for water gate safety management and flood prevention.
(28) is a lock.

Next, each operation of the apparatus of the present invention will be explained.

- To roll up the water gate, rotate the manual handle (3) clockwise as shown by the arrow in Figure 1.

With the device of the present invention, at all times (when the water gate is in the landing state)
Since both the high helix screws (17a) and (13b) are loosened due to their automatic loosening action, the friction clutch mechanism a is released and the high helix screws (17a) and (13b) are loosened.
The intermediate shaft (17) is connected to the driving shaft (13) by screwing in b).
) is pressed toward the tip by the spring (16), so the cone portion (17b) of the intermediate shaft (17) presses the drive-side pawl clutch (21) and presses the push-down clutch tffl.
tid is in operation. When the manual handle (3) is rotated in this state, the driving shaft (13) rotates, and the large lead screws (17a), (
13b) is instantly tightened, and as a result, the intermediate shaft (17
) is moved to the proximal end side (to the right in Figure 4), and at the same time as the push-down clutch mechanism d is released, the holding clutch mechanism C starts to operate and acts as a stopper, causing the friction clutch mechanism a to tighten. is generated, a friction torque is generated, and the drive shaft (6) rotates via the pawl clutch mechanism e. At this time, the friction torque depends on the load torque, and the double thread screw (17a),
The axial force (13b) increases instantaneously and raises the water gate. Also, this friction torque is generated by the friction clutch mechanism a.
This occurs in the image area of the holding clutch mechanism C, so
Even a small friction clutch can generate a large I/Lux, but a required lining layer may be provided over the friction area to serve as a friction material.

In this way, the water gate is raised, but if it is stopped midway, the friction torque of the holding clutch mechanism C is still maintained due to the load torque at that time, and the drive side pawls that are in mesh with each other are The clutch (18) and drive-side pawl clutch (21) attempt to reverse rotation, but the ratchet mechanism consisting of the pawl wheel (14) and pawl (23) prevents rotation (reverse rotation) only in the downward direction. never occurs. Even if the above-mentioned reversal is to occur for some reason, in that case the multi-thread screws (17a) and (13b) will be rotated in the direction of tightening due to the friction torque of the holding clutch mechanism C. A torque is generated that raises the gate, and as a result, it is impossible for the floodgate to descend.

■When lowering the water gate door at a slow speed Rotate the manual handle (3) counterclockwise (reverse).

When a slight reverse rotation is applied to loosen both the multi-thread screws (17a) and (13b), the multi-thread screws loosen by that amount and the friction clutch mechanism a is released, creating a small gap.
The water gate lowers by its own weight by the amount of the gap. That is, the water gate door can be lowered at any speed with a very small reversal force because it follows the rotation of the manual handle (3) and is lowered by its own weight. By appropriately consecutively turning the manual handle (3) one after another, the water gate can be lowered by the required height.

■When lowering the flood gate rapidly In the case of an emergency such as a flood, when the flood gate is lowered as quickly as possible, in such a case, move the manual handle (3) toward the front (right side in Figure 4). Pull to.

Figure 6 shows the state in which the manual handle (3) is pulled toward you.As shown in Figure 6, if you pull the manual handle (3) toward you against the force of the spring (16), By the cone stopper (20) attached to (17), the pawl wheel (14) and the drive side pawl clutch (21) are moved forward together, the pawl clutch mechanism e is released, and the bearing (19) Due to the rotational action of , the intermediate shaft (17) does not rotate, but the drive shaft (6) of the drive-side pawl clutch (18) and the rest are in a freely rotatable state, and the water gate falls freely due to its own weight. Centrifugal brake device f
The speed of the water gate is adjusted to an appropriate descending speed (2 to 4 m/win) to improve safety.

■When stopping the water gate while it is descending rapidly Release the manual handle (3) that was pulled toward you in ■ above.

When the manual handle (3) in item (3) above is pulled toward you, the g-friction latch mechanism a is released and the spring The mechanism d that is pressed down by the force (16) is in an operating state, but if the manual handle (3) is released from this state, the intermediate shaft (17) will return to its original position due to the restoring force of the spring (16). Move to. At that time, the drive side pawl clutch (18
) continues to rotate, and the drive-side pawl clutch (21), which is not rotating, approaches it, and both inclined pawls come into contact with each other, but in this state, the push-down clutch mechanism d Since the drive side pawl clutch (21) is only pressed by a small axial force and has only a small transmission torque, it is quite possible for the driving side pawl clutch (21) to rotate following the driving side pawl clutch (18). , when both are close to synchronous speed, the inclined pawls will mesh smoothly with each other. At the same time, when the push-down clutch mechanism d begins to rotate in the downward direction, the multi-thread screws (17a) and (13b) begin to tighten, and as a result, the push-down clutch mechanism d is released, and the holding clutch mechanism C comes into contact, causing friction. The torque of the clutch mechanism a gradually increases, the ratchet mechanism stops rotating in the lowering direction, and the lowering of the water gate door is stopped. At this time, the multiple thread screws (17a) and (13b) are fastened quickly, so the water gate can be lowered instantaneously, and the rotational speed of the above-mentioned double claw clutches (21) and (18) is The cone stopper (
20) is installed so that the position can be finely adjusted using a lock nut, and the gap of the holding clutch mechanism C section can be adjusted.

■If the water gate door does not lower due to water pressure load, etc. while it is lowering under its own weight, turn the manual handle (3) counterclockwise.

Turn the manual handle (3) counterclockwise to remove the multi-thread screw (
17a) and (13b) are loosened, the driving shaft (13) moves while compressing the spring (16) in the direction of the arrow in FIG. 7, and the stepped portion (13d) provided on the driving shaft (13) moves. comes into contact with the stopper (15), and the driving shaft (13) stops at that position, but when it is further turned counterclockwise, the reaction force causes the driving shaft (13) to move in the opposite direction. The axial force acts, and friction torque is generated in the push-down clutch mechanism d that is in contact with it, and the water gate is forcibly pushed down. This frictional torque is generated in accordance with the load as in the case of hoisting, and since the action of the multithread screws (17a) and (13b) is instantaneous, the operation is performed quickly.

Each operation step has been explained above, but as a countermeasure in the event that an abnormally large force is applied to the manual handle (3) during such operations, the device of the present invention adopts the following overload prevention measures. ing. That is, the pawl of the pawl clutch mechanism e is
As shown in the figure, since both the upper and lower winding directions are inclined, the axial force generated by this inclination does not exceed the axial force of the spring (16) during normal operation. If an abnormally large torque is applied from the manual handle (3) to the driving shaft (13), the axial force due to the inclination of the pawls will overcome the axial force of the spring (16), and the inclined pawls will not mesh with each other. That is, the pawl clutch mechanism e is not connected and the driving shaft (13) slips, thereby preventing damage to the device. In addition, it is desirable that the inclined pawls of this pawl clutch mechanism e have a large clearance between the two inclined pawls so that they can easily engage in the case of (2) above. Effective hammer block action can also be expected.

The apparatus of the present invention is preferably of an oil bath type in order to prevent rust in each part thereof and to prevent friction in sliding parts.

<Effects of the Invention> The water gate door elevating device of the present invention described above has the following effects. In other words, all the operations of raising the water gate, slow speed and rapid lowering, and forced lowering can be performed using only the manual handle, so it is easy to operate and there are no errors, and the same axis from the load side can be used as the driving axis. It is highly safe as there is no transmission and the manual handle does not rotate.

■ Even when high-precision lowering positioning is required for water level adjustment gates, etc., accurate positioning is easy by reversing the manual handle with a small amount of force and descending at a slow speed. can be done.

(2) Since an overload prevention mechanism is incorporated into the operating device, damage to the device such as buckling and bending of the rack rod due to excessive operating force can be prevented.

■ Despite being multi-functional and high-performance as mentioned above,
The structure of the device itself is simple, so it is easy to manage regular maintenance and inspections, etc., and since the only operating part is a manual handle, it can be easily prevented from being tampered with by simply locking the manual handle with a lock chain, etc. It is convenient for emergency operations, especially at night, because it is possible to prevent flooding and to simply release the lock chain when operation is required.

As described above, the device of the present invention is easy to operate, reliable, and highly safe, so it is an effective device in view of the aging of future flood gate managers.

[Brief explanation of the drawing]

Figure 1 is a front view of one embodiment of the present invention, and Figure 2 is Figure 1A.
- Cross-sectional view along the B-C-D line, Figure 3 1 to Figure 2 E-
4 is a sectional view taken along line F-F in FIG. 2, FIG. 5 is a sectional view taken along line G-G in FIG. 4, and FIG.
FIG. 7 is an explanatory cross-sectional view showing the device of the present invention during rapid lowering, FIG. 7 is an explanatory cross-sectional view showing the device during forced lowering, and FIG. 8 is an enlarged explanatory view of the main parts of the pawl clutch mechanism. In the figure: (3) ° Manual handle (6) ゛ Drive shaft (11) ゛ Pinion (12) ° Rack rod (13); Driving shaft; (13b) Multi-thread female screw (14);
Pawl wheel (15), stopper (16) spring (12) "intermediate shaft, (27a) multi-thread male screw (1g) =
Drive side pawl clutch (20) Cone stopper (21) Driving side pawl clutch a Friction clutch mechanism b = Ratchet mechanism C: Holding clutch mechanism d: Push-down clutch mechanism e: Pawl clutch mechanism f Centrifugal brake device patent applicant Kyowa Co., Ltd. Manufacturer Noriharu Ariyoshi

Claims (1)

[Claims] 1. A driving shaft with a manual handle fixed to the base end and whose distal end surface becomes the friction surface of the friction clutch mechanism a is supported rotatably and slidably in the axial direction on the bearing case, and is drilled from the distal end side of the driving shaft. A multi-thread female thread is formed near the opening end of the provided hole, and a spring is inserted between the friction surface flange of the drive shaft and a stopper formed to rotate together with the drive shaft and allow the drive shaft to freely slide in the axial direction. A multi-thread screw is press-fitted into the intermediate shaft, and the proximal end thereof is loosely inserted into a hole drilled in the driving shaft, and the multi-thread screw is screwed into the multi-thread female screw at a portion corresponding to the multi-thread female screw on the outer periphery of the intermediate shaft. A male thread is formed, and the part near the tip side is tapered toward the tip side by a required distance from the multi-thread male thread portion, and a cone stopper is provided on the outer periphery of the tip with a tapered cone portion toward the tip side. Moreover, the leading end of the intermediate shaft is disposed so as to surround the outer periphery of the intermediate shaft, and the leading end is rotatable and slidable in the axial direction with respect to the hollow inner surface of the drive-side pawl clutch that is fixed to the rotatable drive shaft. On the other hand, it has a cone part on its hollow inner surface that corresponds to the shape of both the outer surfaces of the cone part of the intermediate shaft and the cone stopper, and its distal end face inclined claw part corresponds to the proximal end face inclined shape of the drive side claw clutch. A driving-side pawl clutch that can freely engage with the pawl portion is arranged so that its base end surface forms the friction surface of the friction clutch mechanism a, and a pawl wheel is loosely fitted on the proximal side of the cone portion of the intermediate shaft. The proximal end of the pawl, which is externally mounted and swingably engages with the pawl wheel and constitutes the ratchet mechanism b together with the pawl wheel, is pivoted by a pawl pin fixed to the clutch brake case, and the drive shaft is used to raise and lower the water gate. A water gate door elevating device characterized by being connected to a rack member for use in water gates.