Bulb type unit connecting rod pin shaft bolt locking device

Abstract

The utility model relates to the technical field of hydropower station equipment, in particular to a bulb type unit connecting rod pin shaft bolt locking device. The device comprises an M18 socket spanner, the outer diameter of the M18 socket spanner is welded to an inner hole of a bearing in a sleeving mode, the two outer ends of the bearing are each correspondingly welded with a connecting plate, and the positions, corresponding to knuckle bearing gland bolts, of the outer ends of the connecting plates are each provided with a round hole in a drilling mode; the M18 socket spanner head is higher than the end face of the bearing. After the device is installed and adjusted, the design and the original equipment are not changed, the action test is normal, when a water guide mechanism acts, the M18 socket spanner in the shaft pin end cover bolt locking device is sleeved on the end cover nut of the pin shaft, the two ends of the locking device are fixed, and the bearing in the middle rotates, so that the bolt of the pin shaft end cover cannot loosen and fall off. The device is simple, low in cost, easy to install, safe, reliable and convenient to popularize and use.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower station equipment, in particular to a bulb type unit connecting rod pin bolt locking device. Background Art

[0002] In the prior art, the bulb-type flow-through unit of a hydropower station may sometimes shut down due to the safety link falling off. Since the bulb-type flow-through unit is a horizontal unit, the main components of the unit need to be installed vertically, and the water guide mechanism safety link above the center line of the unit is installed on the upper part of the outer water distribution ring. The outer water distribution ring bears the entire or part of the safety link's gravity. Even if the bolts are loose, the safety link will not fall under the support of the outer water distribution ring. However, there is no equipment to bear the gravity at the lower part of the water guide mechanism safety link below the center line of the unit. When the unit is operating and the load is adjusted, the guide vanes are in a frequently changing state, and the frequent movement of the safety link loosens the bolts. At the same time, under the action of the gravity of the link itself, the pin end cover bolts and the end cover will loosen and fall off, and the safety link will also fall off, causing shutdown. One end of the safety link of the water diversion mechanism of the hydropower station is connected to the control ring by a pin shaft, and the other end is connected to the crank arm by a pin shaft. The upper half of the pin shaft is an ordinary pin shaft fixed by an end cover and bolts, and the lower half of the pin shaft is a bolt sleeve fixed with a fixed pad and a nut, and a stopper is welded next to the pad to prevent loosening. Therefore, when the safety link falls off, the shaft pin is still fixed on the control ring and crank arm. Loose bolts cause shutdowns and damage mechanical equipment, posing a safety hazard to the daily work of operation and maintenance personnel. In daily life, it is necessary to shut down the generator set periodically and check the tightening of loose bolts, which increases the work intensity of personnel, operation risks, reduces the power generation time of the unit and reduces economic benefits. Utility Model Content

[0003] The utility model aims to provide a bulb type unit connecting rod pin bolt locking device with reasonable structure, safety and reliability in view of the above-mentioned shortcomings.

[0004] The technical solution of the utility model is: a bulb-type unit connecting rod pin bolt locking device, which is characterized by comprising an M18 socket wrench, the outer diameter of the M18 socket wrench is sleeve-welded on the inner hole of the bearing, a connecting plate is welded at each of the two ends of the outer side of the bearing, and a circular hole is drilled at the outer end of the connecting plate corresponding to the position of the joint bearing gland bolt; the M18 socket wrench is higher than the end face of the bearing.

[0005] The above scheme also includes:

[0006] The advantages of the utility model are: 1. After the device is installed and adjusted, the design and the original equipment are not changed, and the action test is normal. When the water guide mechanism is in action, the M18 socket wrench in the shaft pin end cover bolt locking device is sleeved on the end cover nut of the shaft pin, and the two ends of the locking device are fixed, while the middle bearing rotates with it, so that the bolts of the shaft pin end cover cannot be loosened or fall off. 2. The device is simple, low cost, easy to install, safe and reliable, and easy to promote and use.

[0007] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a simplified structural diagram of the utility model.

[0009] Figure 2 yes Figure 1 Left view structural diagram. DETAILED DESCRIPTION

[0010] See also Figure 1 , 2 The names of the parts are as follows: M18 socket wrench 1, bearing 2, connecting plate 3, round hole 4.

[0011] See also Figure 1 , 2 The bulb type unit connecting rod pin bolt locking device uses the gland bolt position of the joint bearing on the safety connecting rod as a fixed point. The design includes an M18 socket wrench 1, and the outer diameter of the M18 socket wrench 1 is welded on the inner hole of the bearing 2. The bearing 2 is a common rolling bearing. The outer diameter of the M18 socket wrench 1 is 24mm, and it is welded on the bearing 2 with an inner diameter of 24. A connecting plate 3 is welded at each end of the outer side of the bearing 2, and a circular hole 4 is drilled at the outer end of the connecting plate 3 corresponding to the joint bearing gland bolt position. The circular hole 4 is used for the connecting plate joint bearing gland bolt position at both ends. The M18 socket wrench 1 is higher than the end face of the bearing 2, which is convenient for the M18 socket wrench 1 to be inserted into the bolt. The shutdown problem caused by the loosening and falling off of the bolts of the safety link pin shaft end cover leads to the falling off of the safety link. In the shaft pin end cover bolt locking device, the M18 socket wrench 1 is sleeved on the end cover nut of the pin shaft, so that the bolts of the pin shaft end cover cannot be loosened or fallen off without affecting the rotation of the unit's water guide mechanism.

[0012] Instructions for use: One end of the safety link of the water diversion mechanism of the hydropower station is connected to the control ring by a pin shaft, and the other end is connected to the crank arm by a pin shaft. The upper half of the pin shaft is an ordinary pin shaft fixed by an end cover and bolts, and the lower half of the pin shaft is a bolt sleeved on a fixed pad and fixed with a nut, and a stopper is welded next to the pad to prevent loosening. Put the M18 socket wrench 1 on the end cover nut of the pin shaft, and the connecting plate 3 with round holes 4 on both sides is fixed by the safety link rod joint bearing gland bolts. The water diversion mechanism was manually operated for testing. During the test, it was found that the safety link rod joint bearing gland was fixed, and the pin shaft rotated with the action of the water diversion mechanism. The locking device also rotated due to the bearing 2.

[0013] The above description is only a specific implementation of the present utility model, and various examples do not constitute a limitation on the essential content of the present utility model.

Claims

1. The bulb type unit connecting rod pin bolt locking device is characterized by The invention comprises an M18 socket wrench (1), the outer diameter of the M18 socket wrench (1) is welded on the inner hole of the bearing (2), a connecting plate (3) is welded to the two outer ends of the bearing (2), and a circular hole (4) is drilled at the outer end of the connecting plate (3) at the position corresponding to the bolt of the spherical bearing gland; the M18 socket wrench (1) is higher than the end face of the bearing (2).

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