CN217776873U - Dismantling tool for pre-twisted blade - Google Patents
Dismantling tool for pre-twisted blade Download PDFInfo
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- CN217776873U CN217776873U CN202221906773.2U CN202221906773U CN217776873U CN 217776873 U CN217776873 U CN 217776873U CN 202221906773 U CN202221906773 U CN 202221906773U CN 217776873 U CN217776873 U CN 217776873U
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Abstract
The utility model provides a dismantling frock of pretwist blade, belongs to the blade and demolishs frock technical field, the utility model provides a current pretwist blade need assist welding pin puller when overhauing the dismouting, after extracting the blade, because the unable reuse of blade that the pin puller made demolising of blade top welding has caused the very big extravagant problem of blade, this application a dismantling frock of pretwist blade include stop nut, pendulum cylinder cover, double-end screw, stopper, locating component, fixed L type jack catch, adjustable L type jack catch and two locking bolts. The pin puller does not need to be welded on the blade top when the blade is disassembled by utilizing the tool, the structure of the blade is not damaged, the disassembled blade can be repeatedly used, and the manufacturing cost of the blade is greatly saved.
Description
Technical Field
The utility model belongs to the technical field of the frock is demolishd to the blade, concretely relates to frock of demolising of pretwist blade.
Background
The high, medium and low pressure rotor blades of the steam turbine are installed in a novel pre-twisting mode, a blade top groove is machined on a lathe, an assembly opening is machined on an slotting machine, then a fitter puts the blades into the blade top groove according to numbers and fastens the blades, and the last blade is hammered into the blade top groove and locked by a stop nail. When the unit is in grid-connected power generation operation for a period of time, the dismantling work of the pre-twisted blades is very difficult if needing to be overhauled. Conventionally, a pin puller is generally welded at the top of a pre-twisted blade to pull out the blade. Because the blade that the welding pin puller of blade top made demolising can't be used again, has caused the very big waste of blade to this kind of mode of pulling out demolising need continuously with the help of external force, also makes also very low of work efficiency, consequently develops the frock of demolising of pretwist blade in order to solve above-mentioned problem and is very accordant with actual need.
SUMMERY OF THE UTILITY MODEL
The utility model solves the problems that the prior pre-twisted blade needs an auxiliary welding pin puller when being overhauled and disassembled, and after the blade is pulled out, the blade which is removed can not be reused due to the welding pin puller at the blade top, which causes great waste of the blade, and further develops a pre-twisted blade removing tool;
a pre-twisted blade dismantling tool comprises a limiting nut, a pendulum bob cylindrical sleeve, a double-headed screw, a limiting block, a positioning assembly, a fixed L-shaped clamping jaw, an adjustable L-shaped clamping jaw and two locking bolts;
the top of the limiting block is provided with a threaded through hole, one side of the threaded through hole is provided with a strip-shaped through hole extending along the length direction of the limiting block, the other side of the threaded through hole is provided with a positioning through hole, the side wall of one side of the strip-shaped through hole is provided with an adjusting strip-shaped hole, and the side wall of one side of the positioning through hole is provided with a locking hole;
the double-head screw is inserted into the limiting block in the vertical direction, the bottom end thread section of the double-head screw is arranged in the thread through hole and is in threaded connection with the limiting block, the pendulum bob cylindrical sleeve is sleeved on the polished rod part in the double-head screw, a gap is formed between the pendulum bob cylindrical sleeve and the double-head screw, the limiting nut is sleeved on the top end thread section in the double-head screw, the limiting nut is in threaded fastening connection with the double-head screw, the top of the fixed L-shaped clamping jaw is inserted into the locking hole and is in fastening connection with the limiting block through a locking bolt, the top of the adjustable L-shaped clamping jaw is inserted into the locking strip-shaped hole and is in fastening connection with the limiting block through another locking bolt, the fixed L-shaped clamping jaw and the adjustable L-shaped clamping jaw are arranged oppositely, the positioning assembly is sleeved on the fixed L-shaped clamping jaw and the adjustable L-shaped clamping jaw and is in fastening connection with the fixed L-shaped clamping jaw and the adjustable L-shaped clamping jaw;
furthermore, the positioning assembly comprises a positioning sleeve and a positioning bolt, a positioning threaded hole is processed on the outer ring surface of the positioning sleeve, the positioning threaded hole is arranged corresponding to the fixed L-shaped clamping jaw, the positioning bolt is arranged in the positioning threaded hole and is in threaded connection with the positioning sleeve, the positioning sleeve is sleeved on the fixed L-shaped clamping jaw and the adjustable L-shaped clamping jaw, the tail end of the positioning bolt penetrates through the positioning threaded hole and is in contact with the fixed L-shaped clamping jaw, and the positioning sleeve is in fastening connection with the fixed L-shaped clamping jaw and the adjustable L-shaped clamping jaw through the positioning bolt;
furthermore, a first threaded connecting hole is formed in the side wall of the top of the fixed L-shaped clamping jaw, a threaded section of a locking bolt sequentially penetrates through the locking hole and is arranged in the first threaded connecting hole, the locking bolt is in threaded connection with the first threaded connecting hole, and the inner end face of a screwing part in the locking bolt is in close contact with the side wall of the limiting block where the locking hole is located;
furthermore, a second threaded connecting hole is processed on the side wall of the top of the adjustable L-shaped clamping jaw, a threaded section of another locking bolt sequentially penetrates through the adjusting strip-shaped hole and is arranged in the second threaded connecting hole, the other locking bolt is in threaded connection with the second threaded connecting hole, and an inner end face of a screwing part in the other locking bolt is in close contact with the side wall of the limiting block where the adjusting strip-shaped hole is located;
furthermore, the weight range of the pendulum bob cylindrical sleeve is 1.35 kg-8 kg.
Compared with the beneficial effects generated by the prior art, the application has the following advantages:
1. the utility model provides a dismantling frock of pretwist blade, the pin puller that need not weld on the blade top when utilizing this frock to dismantle the blade does not destroy blade structure itself, can use repeatedly the blade under demolising, very big saving the cost of manufacture of blade.
2. The utility model provides a pair of dismantle frock of pretwist blade need not rotate the impeller with the help of external force when dismantling, utilizes pendulum cylinder cover to carry out the repetitive motion along the length direction of screw rod, utilizes the weight striking of pendulum cylinder cover self to be located the nut of screw rod tip, dismantles the blade under the effect of inertial force, and this kind of dismantlement mode is simple, and dismantles efficiency height, and does not need the manual work to carry out the application of force, very big reduction operator's fatigue strength.
Drawings
FIG. 1 is an exploded view of the main structure of the present invention;
FIG. 2 is an exploded side view of the present invention;
FIG. 3 is an exploded view of the side-of-axis structure of the present invention;
FIG. 4 is a schematic side view of the present invention;
fig. 5 is an exploded view of the top view structure of the present invention;
FIG. 6 is a schematic axial view of a middle stop block of the present invention;
fig. 7 is a right schematic view of the middle positioning sleeve of the present invention;
in the figure: 1 limiting nut, 2 pendulum bob cylindrical sleeves, 3 double-threaded screws, 4 limiting blocks, 41 threaded through holes, 42 strip-shaped through holes, 43 positioning through holes, 44 adjusting strip-shaped holes, 45 locking holes, 5 locking bolts, 6 positioning sleeves, 61 positioning threaded holes, 7 positioning screws, 8 fixing L-shaped clamping jaws, 81 first threaded connecting holes, 9 adjustable L-shaped clamping jaws and 91 second threaded connecting holes.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and the embodiment provides a dismantling tool for a pre-twisted blade, which includes a limit nut 1, a pendulum bob cylindrical sleeve 2, a double-headed screw 3, a limit block 4, a positioning assembly, a fixed L-shaped jaw 8, an adjustable L-shaped jaw 9 and two locking bolts 5;
a threaded through hole 41 is formed in the top of the limiting block 4, a strip-shaped through hole 42 extending along the length direction of the limiting block 4 is formed in one side of the threaded through hole 41, a positioning through hole 43 is formed in the other side of the threaded through hole 41, an adjusting strip-shaped hole 44 is formed in the side wall of one side of the strip-shaped through hole 42, and a locking hole 45 is formed in the side wall of one side of the positioning through hole 43;
the double-end screw 3 is inserted in a limiting block 4 along the vertical direction, a bottom end thread section of the double-end screw 3 is arranged in a thread through hole 41, the double-end screw 3 is in threaded connection with the limiting block 4, a pendulum drum sleeve 2 is sleeved on a smooth rod part in the double-end screw 3, a gap is formed between the pendulum drum sleeve 2 and the double-end screw 3, a limiting nut 1 is sleeved on a top end thread section in the double-end screw 3, a limiting nut 1 is in threaded fastening connection with the double-end screw 3, the top of a fixed L-shaped clamping jaw 8 is inserted in a locking hole 45, the fixed L-shaped clamping jaw 8 is in fastening connection with the limiting block 4 through a locking bolt 5, the top of the adjustable L-shaped clamping jaw 9 is inserted in a locking strip-shaped hole 44, the adjustable L-shaped clamping jaw 9 is in fastening connection with the limiting block 4 through another locking bolt 5, the fixed L-shaped clamping jaw 8 is arranged opposite to the adjustable L-shaped clamping jaw 9, a positioning assembly is sleeved on the fixed L-shaped clamping jaw 8 and the adjustable L-shaped clamping jaw 9, and the positioning assembly is in fastening connection with the fixed L-shaped clamping jaw 8 and the adjustable L-shaped clamping jaw 9.
The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and a difference between the embodiment and the specific embodiment is that the positioning assembly includes a positioning sleeve 6 and a positioning bolt 7, a positioning threaded hole 61 is processed on an outer annular surface of the positioning sleeve 6, the positioning threaded hole 61 is disposed corresponding to the fixed L-shaped jaw 8, the positioning bolt 7 is disposed in the positioning threaded hole 61, the positioning bolt 7 is in threaded connection with the positioning sleeve 6, the positioning sleeve 6 is sleeved on the fixed L-shaped jaw 8 and the adjustable L-shaped jaw 9, a tail end of the positioning bolt 7 passes through the positioning threaded hole 61 and contacts with the fixed L-shaped jaw 8, and the positioning sleeve 6 is in fastening connection with the fixed L-shaped jaw 8 and the adjustable L-shaped jaw 9 through the positioning bolt 7. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the fixed L-shaped clamping jaw 8 and the adjustable L-shaped clamping jaw 9 are clamped through the positioning assembly, so that the fixed L-shaped clamping jaw 8 and the adjustable L-shaped clamping jaw 9 are tightly matched with the root part of the blade to be detached, and the clamping stability is ensured.
The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 7, and the difference between the embodiment and the second embodiment is that a first threaded connection hole 81 is formed in a top side wall of the fixed L-shaped jaw 8, a threaded section of a locking bolt 5 sequentially passes through the locking hole 45 and is disposed in the first threaded connection hole 81, the locking bolt 5 is in threaded connection with the first threaded connection hole 81, and an inner end surface of a screwing section in the locking bolt 5 is in close contact with a side wall where the locking hole 45 is located in the limiting block 4. Other components and connection modes are the same as those of the second embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 7, and a difference between the embodiment and the specific embodiment is that a second threaded connection hole 91 is formed in a top side wall of the adjustable L-shaped jaw 9, a thread section of another locking bolt 5 sequentially penetrates through the adjusting strip-shaped hole 44 and is disposed in the second threaded connection hole 91, the other locking bolt 5 is in threaded connection with the second threaded connection hole 91, and an inner end surface of a screwing portion in the other locking bolt 5 is in close contact with a side wall where the adjusting strip-shaped hole 44 is located in the limit block 4. Other components and connection modes are the same as those of the third embodiment.
In the embodiment, the adjustable L-shaped clamping jaw 9 and the fixed L-shaped clamping jaw 8 are fastened through the locking bolt 5, so that the stability of the clamping jaws in working is ensured.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 7, and is different from the fourth embodiment in that the weight of the pendulum cylinder sleeve 2 is set to a value in the range of 1.35kg to 8kg. The other components and the connection mode are the same as those of the fourth embodiment.
The present invention has been disclosed in the above embodiments, but not limited to the present invention, and any person skilled in the art can make some changes or modifications to the equivalent embodiments without departing from the technical scope of the present invention, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments will still belong to the technical scope of the present invention.
The working principle is as follows:
when the device is used, the two sides of a fixed L-shaped tool 8 and an adjustable L-shaped tool 9 are connected with the rear part of a blade top, the adjustable L-shaped tool 9 can be adjusted in position in a strip-shaped through hole 42 of a limiting block 4, after the distance is adjusted to be reasonable, a locking nut 5 is screwed respectively, the fixed L-shaped tool 8 and the adjustable L-shaped tool 9 are fixed with the limiting block 4, a positioning sleeve 6 is sleeved at the corresponding position of the fixed L-shaped tool 8 and the adjustable L-shaped tool 9, a positioning screw 7 is screwed, so that the limiting block 4, the positioning sleeve 6, the fixed L-shaped tool 8, the adjustable L-shaped tool 9 and a detached blade form a stable structure, the double-head screw 3 is screwed into a thread through hole 41 on the limiting block 4 and is propped against the blade top of the detached blade to ensure the firmness, a pendulum cylinder sleeve 2 is sleeved on the double-head screw 3, then a limiting nut 1 is screwed on the double-head screw 3, the pendulum cylinder sleeve 2 can move on the double-head screw 3, the pendulum cylinder sleeve 2 can impact force on the double-head screw 3 between the double-head screw 4 and the adjustable L-type tool 3, and the adjustable L-type blade can be taken out, and the adjustable L-type tool can be taken out by the adjustable L-type tool, and the L-type blade can be taken out by the double-type tool when the pendulum cylinder sleeve 2 and the adjustable L-type blade. Because the adjustable L-shaped tool 9 can adjust the distance in the strip-shaped through hole 42 of the limiting block 4, the adjustable L-shaped tool can adapt to the blade dismantling work of different sizes. After the blade is removed, the blade can be directly taken out of the tool without any damage to the blade, and the blade can be reused.
Claims (5)
1. The utility model provides a dismantling frock of pretwist blade which characterized in that: the dismounting tool comprises a limiting nut (1), a pendulum bob cylindrical sleeve (2), a double-headed screw (3), a limiting block (4), a positioning assembly, a fixed L-shaped clamping jaw (8), an adjustable L-shaped clamping jaw (9) and two locking bolts (5);
a threaded through hole (41) is formed in the top of the limiting block (4), a strip-shaped through hole (42) extending along the length direction of the limiting block (4) is formed in one side of the threaded through hole (41), a positioning through hole (43) is formed in the other side of the threaded through hole (41), an adjusting strip-shaped hole (44) is formed in the side wall of one side of the strip-shaped through hole (42), and a locking hole (45) is formed in the side wall of one side of the positioning through hole (43);
the double-end screw (3) insert along vertical direction and establish on stopper (4), the bottom screw thread section setting of double-end screw (3) is in screw thread through-hole (41), and double-end screw (3) and stopper (4) threaded connection, pendulum cylinder cover (2) cover is established at the polished rod portion in double-end screw (3), and be equipped with the clearance between pendulum cylinder cover (2) and double-end screw (3), stop nut (1) cover is established on the top screw thread section in double-end screw (3), and stop nut (1) and double-end screw (3) threaded fastening connection, the top of fixed L type jack catch (8) is inserted and is established in locking hole (45), and fixed L type jack catch (8) is through a locking bolt (5) and stopper (4) fastening connection, the top of adjustable L type jack catch (9) is inserted and is established in bar through-shaped through-hole (42), and adjustable L type jack catch (9) are through another locking bolt (5) and stopper (4) fastening connection, fixed L type jack catch (8) and adjustable L type jack catch (9) set up relatively fixed set up in L type jack catch (9) and adjustable L type jack catch (8), and adjustable L type jack catch (9) fixed set up and L type jack catch (8) fixed set up on adjustable type jack catch (8).
2. The pre-twisted blade dismantling tool according to claim 1, characterized in that: the positioning assembly comprises a positioning sleeve (6) and a positioning bolt (7), a positioning threaded hole (61) is machined in the outer annular surface of the positioning sleeve (6), the positioning threaded hole (61) is correspondingly arranged with the fixed L-shaped clamping jaw (8), the positioning bolt (7) is arranged in the positioning threaded hole (61), the positioning bolt (7) is in threaded connection with the positioning sleeve (6), the positioning sleeve (6) is sleeved on the fixed L-shaped clamping jaw (8) and the adjustable L-shaped clamping jaw (9), the tail end of the positioning bolt (7) penetrates through the positioning threaded hole (61) and is in contact with the fixed L-shaped clamping jaw (8), and the positioning sleeve (6) is in fastening connection with the fixed L-shaped clamping jaw (8) and the adjustable L-shaped clamping jaw (9) through the positioning bolt (7).
3. The dismantling tool for the pre-twisted blade of claim 2, characterized in that: a threaded connecting hole (81) is processed on the side wall of the top of the fixed L-shaped clamping jaw (8), a threaded section of a locking bolt (5) sequentially penetrates through the locking hole (45) and is arranged in the threaded connecting hole (81), the locking bolt (5) is in threaded connection with the threaded connecting hole (81), and the inner end face of a screwing part in the locking bolt (5) is in close contact with the side wall where the locking hole (45) is located in the limiting block (4).
4. The dismantling tool for the pre-twisted blade of claim 3, wherein: a second threaded connecting hole (91) is processed on the side wall of the top of the adjustable L-shaped clamping jaw (9), the thread section of another locking bolt (5) sequentially penetrates through the adjusting strip-shaped hole (44) and is arranged in the second threaded connecting hole (91), the other locking bolt (5) is in threaded connection with the second threaded connecting hole (91), and the inner end face of a screwing part in the other locking bolt (5) is in close contact with the side wall of the limiting block (4) where the adjusting strip-shaped hole (44) is located.
5. The dismantling tool for the pre-twisted blade of claim 4, wherein: the weight range of the pendulum bob cylindrical sleeve (2) is 1.35 kg-8 kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221906773.2U CN217776873U (en) | 2022-07-20 | 2022-07-20 | Dismantling tool for pre-twisted blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221906773.2U CN217776873U (en) | 2022-07-20 | 2022-07-20 | Dismantling tool for pre-twisted blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217776873U true CN217776873U (en) | 2022-11-11 |
Family
ID=83941587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221906773.2U Active CN217776873U (en) | 2022-07-20 | 2022-07-20 | Dismantling tool for pre-twisted blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217776873U (en) |
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2022
- 2022-07-20 CN CN202221906773.2U patent/CN217776873U/en active Active
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