CN220185663U - Mounting height self-adaptive brake travel pin - Google Patents
Mounting height self-adaptive brake travel pin Download PDFInfo
- Publication number
- CN220185663U CN220185663U CN202321018468.4U CN202321018468U CN220185663U CN 220185663 U CN220185663 U CN 220185663U CN 202321018468 U CN202321018468 U CN 202321018468U CN 220185663 U CN220185663 U CN 220185663U
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- brake
- special
- adjusting sleeve
- shaped screw
- position switch
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- 230000003044 adaptive effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model discloses a travel pin of a self-adaptive brake with a mounting height, which comprises a special-shaped screw, wherein the top of the special-shaped screw is matched with a brake plate, the bottom of the special-shaped screw is provided with an adjusting sleeve matched with the screw in a threaded manner, and the bottom of the adjusting sleeve is contacted with a position switch; the utility model changes the single structure form of the stroke pin of the existing brake, and the relative height between the bottom of the stroke pin and the position switch can be adjusted after the stroke pin is installed through a combined structure, so that the position switch can be triggered or separated correctly, the current state of the brake can be fed back accurately, and the accuracy of feedback signals is improved; and moreover, the device has a locking function, the relative positions of the travel pins and the position switch are not changed due to the influence of vibration of the brake, and the stability of the feedback device and signals is enhanced.
Description
Technical Field
The utility model relates to the technical field of hydraulic generator brakes, in particular to a travel pin of a brake with self-adaptive mounting height.
Background
The brake is also called an air brake, is generally uniformly distributed under the rotor of the hydroelectric generating set in a certain number in a ring shape, and the working principle is that when the set brakes, industrial air is adopted to jack up a brake piston, and the piston pushes a brake flashboard to contact with a brake ring to generate friction force to brake the set. In the shutdown process of the unit, the rotating speed is reduced to a certain degree, and the generator rotor is continuously braked, so that the thrust bearing is prevented from being burnt out due to the fact that a thrust oil film is damaged at a low speed, and the brake plays a role in braking at the moment. In addition, the brake can also be used as a jack. When the unit is overhauled, the rotor is needed to be jacked up in many times, such as the disassembly of a large shaft when the thrust tile is inspected and the rotating part is disassembled. After long-time shutdown, the rotor is started up again, and the rotor is jacked up first to allow lubricating oil to enter the thrust tile surface, and then the rotor is started up after being fallen down. In these cases, the damper acts as a jack. And during the starting or running process of the unit, the brake does not work, and the piston of the brake is at the lowest position. The brake position switch is an important tool for monitoring whether a brake is put in or not, namely, the position of a brake flashboard.
At present, most of travel pins of a hydropower station brake are stainless steel cylinders, the travel pins are installed below a brake flashboard through end threads and move up and down along with the input and the withdrawal of the brake (namely the lifting of the brake flashboard), and position switches are installed at the bottoms of the brakes corresponding to the travel pins. When the brake is in the removal state, the travel pin presses the position switch sensor, and a feedback signal shows that the brake is in the removal state; when the brake is in the on state, the travel pin rises along with the brake flashboard and is separated from the position switch sensor, and the position switch changes an output signal to display that the brake is in the on state.
The disadvantages of the prior art are as follows:
1) The stroke pin and the brake flashboard are in a threaded connection mode, and because the stroke pin is a smooth stainless steel cylinder, effective torque fastening or loosening threads are difficult to form during installation or replacement; and the brake is in the environment where oil mist exists, and after the surface of the travel pin covers the oil mist, the brake is more difficult to disassemble and assemble.
2) When a brake flashboard of the brake contacts with a rotor brake ring for braking, vibration can cause the thread of the travel pin to loosen, and the travel pin has the falling risk.
3) When the stroke pin is installed at present, the installation height of the stroke pin can not be adjusted only by screwing the screw thread to the root for fastening and limiting. Because the height of each brake or the height of each position switch is different, and meanwhile, the height of the travel pins falls down after loosening, the problem that the height of the travel pins relative to the position switch is too high or too low is caused, when the height is too high, the brake falls down, the travel pins cannot contact the position switch or the compaction amount after contact is insufficient, the position switch does not act, and a brake 'withdraw' signal cannot be fed back; when the brake is too low, the travel pin is pressed down to cause the damage of the position switch, the brake 'withdraw' signal cannot be fed back, or the brake is lifted up, the travel pin cannot be completely separated from the position switch after being lifted up, and the brake 'throw' signal cannot be fed back.
Disclosure of Invention
The utility model aims to overcome the defects and provide a travel pin of a self-adaptive brake with high mounting height, so as to solve the problems in the prior art.
The utility model aims to solve the technical problems, and adopts the technical scheme that: the utility model provides a mounting height self-adaptation stopper stroke pin, it includes special-shaped screw rod, special-shaped screw rod top and stopper brake shoe cooperation, special-shaped screw rod bottom be equipped with rather than screw thread complex adjusting sleeve, adjusting sleeve bottom and position switch contact.
Preferably, the top of the adjusting sleeve is contacted with the bottom of the locking nut sleeved on the surface of the special-shaped screw.
Preferably, the special-shaped screw rod comprises a thick threaded rod matched with the internal threaded hole of the brake plate, the bottom of the thick threaded rod is fixedly connected with the top of the thin threaded rod, and the bottom of the thin threaded rod is matched with the internal threads of the adjusting sleeve.
Preferably, the lock nut is in threaded engagement with a fine threaded rod.
Preferably, the brake shoe bottom is in contact with a brake piston top within the brake cylinder.
Preferably, the position switch is fixed to a mounting plate on the underside of the brake cylinder.
Preferably, the bottom of the adjusting sleeve is of a square head structure.
The utility model has the beneficial effects that:
1) The utility model changes the single structure form of the stroke pin of the existing brake, and the relative height between the bottom of the stroke pin and the position switch can be adjusted after the stroke pin is installed through a combined structure, so that the position switch can be triggered or separated correctly, the current state of the brake can be fed back accurately, and the accuracy of feedback signals is improved; and moreover, the device has a locking function, the relative positions of the travel pins and the position switch are not changed due to the influence of vibration of the brake, and the stability of the feedback device and signals is enhanced.
2) The method improves the accuracy and stability of the feedback of the position information of the brake, provides a vital condition for operation and maintenance personnel of a power plant to know and master the real state of the brake, can effectively avoid the confirmation of the operation and maintenance personnel to the site, provides reliable information support for judging the condition of starting and stopping the hydroelectric generating set, improves the operation and maintenance work efficiency of the hydroelectric generating set to a great extent, and powerfully ensures the safe and stable operation of the hydroelectric generating set.
Drawings
FIG. 1 is a schematic perspective view of a mounting height adaptive brake travel pin;
fig. 2 is a schematic view of a mounting structure for mounting a highly adaptive brake travel pin.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the travel pin of the self-adaptive brake for the mounting height comprises a special-shaped screw rod 1, wherein the top of the special-shaped screw rod 1 is matched with a brake gate plate 2, an adjusting sleeve 3 in threaded fit with the special-shaped screw rod 1 is arranged at the bottom of the special-shaped screw rod 1, and the bottom of the adjusting sleeve 3 is in contact with a position switch 4.
Preferably, the top of the adjusting sleeve 3 is contacted with the bottom of the locking nut 5 sleeved on the surface of the special-shaped screw 1. After the adjusting sleeve 3 is screwed up or down to be adjusted in place on the surface of the special-shaped screw 1, the bottom of the locking nut 5 is contacted with the top of the adjusting sleeve 3 and locked by screwing the locking nut 5, so that the loosening of the adjusting sleeve 3 can be effectively prevented.
Preferably, the special-shaped screw 1 comprises a thick threaded rod 1.1 matched with an inner threaded hole of the brake damper plate 2, the bottom of the thick threaded rod 1.1 is fixedly connected with the top of the thin threaded rod 1.2, and the bottom of the thin threaded rod 1.2 is matched with the inner threads of the adjusting sleeve 3. In the embodiment, when the special-shaped screw 1 is installed, the installation process can be realized by the threaded fit of the thick threaded rod 1.1 on the upper side and the brake damper plate 2, and the adjusting sleeve 3 is adjusted on the surface of the thin threaded rod 1.2. In the embodiment, the thick threaded rod 1.1 of the special-shaped screw 1 is M30 thick thread, the height is 37mm, the thin threaded rod 1.2 is M24 thick thread, the height is 58mm, the locking nut 5 is M24 nut, and the height is 10mm.
Preferably, the lock nut 5 is in threaded engagement with the fine threaded rod 1.2. Because lock nut 5 and thin threaded rod 1.2 screw-thread fit, so lock nut 5 is also spacing between thick threaded rod 1.1 bottom and adjusting sleeve 3 top, can not take place the phenomenon that drops.
Preferably, the bottom of the brake shoe 2 is in contact with the top of the brake piston 6.1 in the brake cylinder 6.
Preferably, the position switch 4 is fixed to a mounting plate 6.2 on the bottom side of the brake cylinder 6.
Preferably, the bottom of the adjusting sleeve 3 is of a square head structure. The total height of the adjusting sleeve 3 of the embodiment is 50mm, one end is provided with a central drill M24 internal threaded hole, the depth of the threaded hole is 45mm, and the other end is of a square head structure, so that the adjusting sleeve can be rotated by using an S19 wrench.
The installation method of the travel pin of the installation height self-adaptive brake comprises the following steps:
1) The lock nut 5 and the adjusting sleeve 3 are screwed onto the thin threaded rod 1.2 of the special-shaped screw 1 in sequence, after the adjusting sleeve 3 is screwed to the bottom, the lock nut 5 is retracted to be attached to the adjusting sleeve 3, and at the moment, the gap between the top of the lock nut 5 and the bottom of the thick threaded rod 1.1 is about 3 mm.
2) After the screw locking glue is smeared on the screw thread of the thick threaded rod 1.1, the thick threaded rod is integrally screwed into the internal threaded hole of the brake damper 2, and the S19 wrench is used for applying force and fastening on the square head structure at the bottom of the adjusting sleeve 3 (because the locking nut 5 is attached to the adjusting sleeve 3 to form a back cap, the bottom of the adjusting sleeve 3 is fastened at the moment, the thick threaded rod 1.1 can be completely screwed into the internal threaded hole of the brake damper 2).
3) The 3mm gap between the top of the lock nut 5 and the bottom of the thick threaded rod 1.1 is used for screwing the lock nut 5 upwards to separate the lock nut from the adjusting sleeve 3, and the adjusting sleeve 3 is rotated to adjust the height of the adjusting sleeve to a proper position according to the height of the brake position switch 4 (when the brake plate 2 is guaranteed to fall down, the bottom of the adjusting sleeve 3 can trigger the position switch 4 and does not press and break the position switch, and meanwhile, when the brake plate 2 is lifted up, the adjusting sleeve 3 can be disconnected from the position switch 4).
4) The locking nut 5 is screwed downwards to be contacted with the top of the adjusting sleeve 3, and the height of the rotating sleeve 3 is locked.
The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (7)
1. An installation height self-adaptive brake travel pin, which is characterized in that: the novel brake device comprises a special-shaped screw (1), wherein the top of the special-shaped screw (1) is matched with a brake gate plate (2), an adjusting sleeve (3) in threaded fit with the special-shaped screw is arranged at the bottom of the special-shaped screw (1), and the bottom of the adjusting sleeve (3) is in contact with a position switch (4).
2. A mounting height adaptive brake travel pin as defined in claim 1, wherein: the top of the adjusting sleeve (3) is contacted with the bottom of a locking nut (5) sleeved on the surface of the special-shaped screw (1).
3. A mounting height adaptive brake travel pin as defined in claim 2, wherein: the special-shaped screw rod (1) comprises a coarse threaded rod (1.1) matched with an inner threaded hole of the brake damper (2), the bottom of the coarse threaded rod (1.1) is fixedly connected with the top of the fine threaded rod (1.2), and the bottom of the fine threaded rod (1.2) is matched with the inner threads of the adjusting sleeve (3).
4. A mounting height adaptive brake travel pin according to claim 3, wherein: the locking nut (5) is in threaded fit with the fine threaded rod (1.2).
5. A mounting height adaptive brake travel pin as defined in claim 1, wherein: the bottom of the brake plate (2) is contacted with the top of a brake piston (6.1) in the brake cylinder body (6).
6. A mounting height adaptive brake travel pin as defined in claim 5, wherein: the position switch (4) is fixed on a mounting plate (6.2) at the bottom side of the brake cylinder body (6).
7. A mounting height adaptive brake travel pin as defined in claim 1, wherein: the bottom of the adjusting sleeve (3) is of a square head structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321018468.4U CN220185663U (en) | 2023-04-30 | 2023-04-30 | Mounting height self-adaptive brake travel pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321018468.4U CN220185663U (en) | 2023-04-30 | 2023-04-30 | Mounting height self-adaptive brake travel pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220185663U true CN220185663U (en) | 2023-12-15 |
Family
ID=89104961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321018468.4U Active CN220185663U (en) | 2023-04-30 | 2023-04-30 | Mounting height self-adaptive brake travel pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220185663U (en) |
-
2023
- 2023-04-30 CN CN202321018468.4U patent/CN220185663U/en active Active
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