Automatic throwing and withdrawing device for lock spindle of ship lock herringbone door

Abstract

The utility model relates to the field of hydropower station gate locking, in particular to an automatic throwing and withdrawing device for a lock spindle of a ship lock herringbone door, which comprises an output motor, a planetary gear set, a large worm and a small worm. The upper end of the large worm is connected with the output motor through the planetary gear set, the small worm is meshed with the large worm, the length of turbine teeth of the large worm is larger than that of turbine teeth of the small worm, the length of the small worm is larger than that of the large worm, and when the large worm rotates, the lower end of the small worm of the large worm is screwed in and screwed out of a center hole of the gate support. The locking structure extends from the top of the miter gate to the middle of the miter gate, locking force is distributed on most area of the miter gate, and the miter gate can be better protected from being bent due to impact. Manual work is replaced to quickly complete automatic throwing and retreating operation of the locking structure, the danger of manual operation is reduced, the efficiency brought by mechanical operation is improved, and the waiting time of ships is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of lock structures of hydropower station gates, and particularly relates to an automatic throwing and withdrawing device for miter gate lock ingots of a ship lock. Background Technique

[0002] The miter gate is a most common type of gate for ship locks and is used as a movable water retaining gate for the upper and lower lock heads of a ship lock. When the miter gate works, the two gate leaves form a three-hinged arch to bear the water pressure; when the waterway is open, the two gate leaves are located in the gate niches on the side walls and do not bear the water pressure, being in a non-working state. The miter gate generally can only bear unidirectional water pressure and can only operate under the condition of equal upstream and downstream water levels and static water conditions. The commonly used gate lock structures for miter gates include several types such as a mechanical locking system, a hydraulic locking system, an electrical locking system, a gravity locking system, and a combined locking system, and a locking ingot device is put into operation when the gate is fully opened in place.

[0003] Generally, after the miter gate is fully opened, it needs to be close to the lock wall. At this time, the miter gate of the ship lock is in a fully opened state. After being fully opened, affected by factors such as wind force, surge, reverse water pressure, and ship shape fluctuations, the entire miter gate swings back and forth under the influence of the acting force and the reaction force, and it is easy to cause damage to the miter gate or damage to the power system. For example, the ship lock miter gate safety locking device with the authorization announcement number CN213267802U is to solve the problem that the miter gate is easily damaged after being fully opened. This design structure is at the top of the miter gate and is convenient for operation, but there is still a drawback that someone needs to walk over to operate. Generally, people can pass on the top of the miter gate, but it is relatively narrow after all. There are problems such as the risk of falling for the operator working in the air, and the manual operation prolongs the closing time of the miter gate, affecting the passing rate of ships. Content of the Utility Model

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide an automatic throwing and withdrawing device for miter gate lock ingots of a ship lock, so as to solve the problem of low ship passing efficiency caused by the manual operation locking structure in the background technique, and also solve the problem of uneven locking force on the miter gate caused by the locking structure and resulting in damage.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An automatic throwing and withdrawing device for miter gate lock ingots of a ship lock, including a lock wall support fixedly arranged on the lock head lock wall of the ship lock and a gate support fixedly arranged on the miter gate, and there are central holes on the lock wall support and the gate support. It is characterized in that: it further includes a throwing and withdrawing mechanism fixedly arranged on the lock wall.

[0007] The retractable mechanism includes an output motor, a planetary gear set, a large worm, and a small worm. The installation height of the output motor is higher than that of the lock wall support and the gate support. The large worm and the small worm are designed parallel to the miter gate. After the miter gate is fully opened, the central holes of the miter gate, the large worm, and the central axis of the small worm are on the same straight line. Both the upper and lower ends of the large worm and the small worm are provided with worm supports vertically fixed on the lock wall. The upper end of the large worm is connected to the output motor through a planetary gear set. The small worm meshes with the large worm, and the length of the worm teeth of the large worm is longer than that of the small worm. The length of the small worm is longer than that of the large worm. When the large worm rotates, the lower end of the small worm screws in and out of the central hole of the gate support.

[0008] Further, a hollow sleeve with a thicker upper part and a thinner lower part is also sleeved in the central hole of the gate support.

[0009] Further, both the upper and lower ends of the large worm are sleeved in the worm support through ball bearings.

[0010] Further, keys are provided on the rod parts at both the upper and lower ends of the small worm, and key grooves are provided on the worm support to cooperate with the keys.

[0011] Further, the lead and pitch diameter of the large worm are at least twice that of the small worm.

[0012] Further, the moving distance of the small worm is greater than the diameter of the hollow sleeve.

[0013] Further, a plurality of lock wall supports sleeved on the lower rod part of the small worm are provided on the lock wall support, and the gate support is below the lowermost lock wall support.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows: The locking structure adopted in the comparative document (CN213267802U) for locking the miter gate is located at the top of the miter gate. From a mechanical perspective, the overall area of the miter gate is large. Only a locking structure is designed at the top, and other parts of the gate (especially the middle and bottom of the gate far from the locking structure) are still affected by the fluctuations of river waves or wind waves, and the locking force is unevenly distributed. However, the locking structure of this design extends from the top of the miter gate to the middle, and the locking force is distributed over most of the area of the miter gate, which can better protect the gate from being bent by impact.

[0015] We adopt an automatic worm drive device to quickly complete the automatic retraction and extension operation of the locking structure instead of manual operation, reducing the danger of manual operation and improving the efficiency brought by mechanical operation, shortening the waiting time of ships, which is of great significance for improving the navigation efficiency of the ship lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view structural view of the present utility model;

[0017] Figure 2 This is a top view structural schematic diagram of the utility model in its operating state. Specific embodiments

[0018] In order to make the technical means, creative features, achieved purposes and effects realized by the utility model easy to understand, the following further elaborates the utility model in combination with specific embodiments. The following described miter gate is in the open state of the dam. After opening, the two miter gates are close to the lock wall of the dam, and are in a position close to the wall like an open door, as follows Figure 1 This is a sectional view of the miter gate and the lock wall in a parallel state. The insertion and withdrawal mechanism is arranged in the gap between the lock wall and the opened miter gate.

[0019] As Figure 1 、 Figure 2 shown, a kind of automatic insertion and withdrawal device for the miter gate lock of a ship lock includes a lock wall support 2 fixedly arranged on the lock head lock wall 1 of the ship lock, a gate support 4 fixedly arranged on the miter gate 3. There are central holes on the lock wall support 2 and the gate support 4, and it also includes an insertion and withdrawal mechanism A fixed on the lock wall.

[0020] The said insertion and withdrawal mechanism A includes an output motor 5, a planetary gear set 6, a large worm 7, and a small worm 8. The installation height of the output motor 5 is higher than that of the lock wall support 2 and the gate support 4. The large worm 7 and the small worm 8 are designed parallel to the miter gate 3. After the miter gate is fully opened, the central holes, the central axis of the large worm 7, and the central axis of the small worm 8 are on the same straight line. Both the upper and lower ends of the large worm 7 and the small worm 8 are provided with worm supports 9 vertically fixed on the lock wall. The upper end of the large worm 7 is connected to the output motor 5 through the planetary gear set 6. Equivalent to the power of the output motor 5 being output horizontally, the planetary gear set 6 transmits the horizontal power to the vertically installed large worm 7. The small worm 8 meshes with the large worm 7, and the turbine teeth of the large worm 7 are longer than those of the small worm 8. The lead and pitch diameter of the large worm 7 are at least twice that of the small worm. The turbine teeth of the small worm 8 are less. That is, when the large worm 7 makes a rotational movement, the turbine teeth of the large worm 7 are equivalent to a rack, and the small worm 8 moves downward. When the insertion and withdrawal mechanism locks the lock wall support 2 and the gate support 4, the lower end of the small worm 8 is inserted into the gate support 4, so that the gate tightly leans against the lock wall to resist the impact of water waves and wind waves.

[0021] The length of the small worm 8 is longer than that of the large worm 7. When the large worm 7 rotates, the lower end of the small worm 8 rotates in and out of the central hole of the gate support 4. To increase the accuracy of the small worm 8 screwing tightly into the central hole, a hollow sleeve 10 with a thick upper part and a thin lower part is also sleeved in the central hole of the gate support 4. The hollow hole inside the hollow sleeve 10 is also thick at the upper part and thin at the lower part. The thinnest part ensures that the lower end of the small worm can be inserted. Preferably, after being inserted, it fits in a tightly fitting manner to lock the small worm and reduce the swinging movement of the rod part of the small worm.

[0022] During specific assembly, the upper and lower ends of the large worm 7 are sleeved in the worm support 2 through ball bearings. Keys are provided on the upper and lower rod parts of the small worm 8, and keyways 80 that cooperate with the keys are provided on the worm support. The design of the keyways 80 and the keys limits the displacement of the small worm, enabling it to only perform translational movements and not rotational or swinging movements.

[0023] The moving distance of the small worm 8 is greater than the diameter of the hollow sleeve 10. When the small worm 8 is screwed in and out up and down, it can disengage from and insert into the gate support 4, thereby locking the miter gate 3 and the lock wall 1. A plurality of lock wall supports sleeved on the lower rod part of the small worm are provided on the lock wall support 2, and the gate support is located below the lowermost lock wall support. A plurality of lock wall supports are provided to tighten the small worm and reduce its shaking frequency to cope with the situation of the small worm being too long. In this way, the gate support can be designed at a position close to the middle of the miter gate, concentrating the stress in the middle of the miter gate to cope with the scouring force of strong winds and big waves.

[0024] Since the locking automatic retracting device for a hydropower dam can have the retracting mechanism arranged at the top position of the gate, the elongation of the small worm can prevent the motor and the meshing turbine teeth from being soaked in water for a long time. Of course, the retracting mechanism is waterproof and needs to be regularly maintained for waterproofing and rust prevention.

[0025] The above has introduced in detail a miter gate lock ingot automatic retracting device provided by the present utility model. The description of the specific embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An automatic locking and unlocking device for miter gates of a lock, comprising a wall support fixedly arranged on the lock head wall of the lock and a gate support fixedly arranged on the miter gate. Central holes are provided on the wall support and the gate support. It is characterized in that: It further includes a retracting mechanism fixed on the lock wall. The retracting mechanism consists of an output motor, a planetary gear set, a large worm, and a small worm. The installation height of the output motor is higher than that of the lock wall support and the gate support. The large worm and the small worm are designed parallel to the miter gate. After the miter gate is fully opened, their central holes, the central axis of the large worm, and the central axis of the small worm are on the same straight line. Both the upper and lower ends of the large worm and the small worm are provided with worm supports vertically fixed on the lock wall. The upper end of the large worm is connected to the output motor through the planetary gear set. The small worm meshes with the large worm, and the length of the worm teeth of the large worm is longer than that of the small worm. The length of the small worm is longer than that of the large worm. When the large worm rotates, the lower end of the small worm screws in and out in the central hole of the gate support.

2. The automatic engaging and disengaging device for the miter gate lock of a ship lock according to claim 1, characterized in that: A hollow sleeve with a thick upper part and a thin lower part is also sleeved in the central hole of the gate support.

3. The automatic locking and unlocking device for miter gates of a ship lock according to claim 1, characterized in that: Both the upper and lower ends of the large worm are sleeved in the worm support through ball bearings.

4. The automatic locking and unlocking device for miter gates of a ship lock according to claim 1, characterized in that: Keys are provided on the rod parts at both the upper and lower ends of the small worm, and key grooves matched with the keys are provided on the worm support.

5. The automatic locking and unlocking device for miter gates of a ship lock according to claim 4, characterized in that: The lead and pitch diameter of the large worm are at least twice that of the small worm.

6. The automatic locking and unlocking device for miter gates of a ship lock according to claim 2, characterized in that: The moving distance of the small worm is greater than the diameter of the hollow sleeve.

7. An automatic locking and unlocking device for miter gates of a ship lock according to claim 1, characterized in that: A plurality of lock wall supports sleeved on the lower rod part of the small worm are provided on the lock wall support, and the gate support is below the lowermost lock wall support.

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