CN217195061U - Plug screw disassembling tool with independent bearing pin - Google Patents
Plug screw disassembling tool with independent bearing pin Download PDFInfo
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- CN217195061U CN217195061U CN202123293503.7U CN202123293503U CN217195061U CN 217195061 U CN217195061 U CN 217195061U CN 202123293503 U CN202123293503 U CN 202123293503U CN 217195061 U CN217195061 U CN 217195061U
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- bearing pin
- plug screw
- cylindrical section
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- bearing
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Abstract
Because the hole site is inconsistent when utilizing the cotter wrench to decompose the plug screw because the hole site leads to in the hole that can not insert the plug screw simultaneously to and even insert in corresponding hole on the plug screw also can not contact simultaneously with each pore wall and can not produce the technical problem of consequently can't decompose the too tight plug screw of moment simultaneously, the utility model provides a plug screw decomposes instrument with independent load round pin. The utility model discloses simple structure, the adjustment is convenient, has a plurality of mutually independent load round pins, and a plurality of load round pins can insert in the corresponding blind hole of bolt terminal surface separately and contact rather than place blind hole pore wall respectively, form the required moment of torsion of decomposition plug screw simultaneously alone, can solve the problem that the decomposition can not get off when the plug screw is too tight.
Description
Technical Field
The utility model relates to a plug screw decomposes instrument with independent load round pin.
Background
In aviation hydraulic accessories, a plug screw is a part for preventing liquid in a cavity from leaking through threaded connection, the structure of the plug screw is shown in figure 1, a plurality of uniformly distributed blind holes 9 are generally arranged on the plug screw, and the number of the blind holes 9 is determined according to the diameter of the plug screw. The screw plug is usually disassembled or assembled using a pin spanner as shown in fig. 2, and the bottom of the base body of the pin spanner is provided with a protruding pin 10 matched with the blind hole 9 on the screw plug to be disassembled or assembled.
Use four holes plug screw as the example, the design of protruding round pin spanner base bottom of decomposition and assembly usefulness has four protruding round pins, because machining error's reason, the hole site on four holes plug screw and the protruding round pin spanner can not be identical completely, consequently four protruding round pins just can insert four holes of four holes plug screw simultaneously at different times, even insert also can certainly not accomplish four protruding round pins in four holes and contact with four pore walls of plug screw simultaneously, also be difficult to accomplish four protruding round pins hard simultaneously, meet the tight condition of four holes plug screw and just can't decompose.
In view of the above, it is necessary to design a resolving tool having a plurality of independent force bearing pins, which can be simultaneously inserted into the holes of the multi-hole plug screw and can be simultaneously forced.
SUMMERY OF THE UTILITY MODEL
In order to solve when utilizing the cotter spanner to decompose the plug screw because the hole site is inconsistent to lead to inserting the hole of plug screw simultaneously to and even insert in the corresponding hole on the plug screw also can not contact simultaneously with each pore wall and can not produce the technical problem that consequently can't decompose the too tight plug screw of moment simultaneously, the utility model provides a plug screw decomposes instrument with independent bearing round pin.
The technical scheme of the utility model is that:
a plug screw decomposition tool with an independent bearing pin is characterized in that: the device comprises a plurality of independent bearing pins, bearing pin supporting plates, bearing pin pressing plates, rubber pads, a plurality of spring steel wires and locking nuts;
each bearing pin has the same structure and is a step pin formed by connecting a first cylindrical section, a second cylindrical section and a third cylindrical section with the diameters decreasing progressively;
the bearing pin supporting plate comprises a bottom plate and an upper cylindrical section; the end face of the bottom is provided with a plurality of through holes for respectively installing the bearing pins, the aperture of each through hole is smaller than the diameter of the first cylindrical section of each bearing pin and larger than the diameter of the second cylindrical section, and the positions and the number of the through holes correspond to the positions and the number of blind holes in the screw plug to be decomposed; the upper part of the upper cylindrical section is provided with threads matched with the locking nut, and the lower part of the upper cylindrical section is provided with a plurality of steel wire mounting holes which are intersected in different surfaces and used for mounting the plurality of spring steel wires;
the bearing pin pressure plate is sleeved on the upper cylindrical section of the bearing pin supporting plate, and the bearing pin pressure plate and the bearing pin supporting plate are matched to clamp the bearing pin and ensure that the axes of the bearing pins are parallel to each other;
a plurality of rubber pads are respectively arranged between the bearing pin pressure plate and each bearing pin and embedded at the lower end of the bearing pin pressure plate;
the spring steel wires are respectively installed in the steel wire installation holes in a close fit manner, the end parts of the spring steel wires are positioned outside the steel wire installation holes and used for elastically shifting the bearing pins to enable the bearing pins to be always close to the hole walls of the blind holes where the bearing pins are positioned;
the locking nut is arranged above the bearing pin pressure plate, is in threaded fit connection with the upper cylindrical section of the bearing pin supporting plate and is used for pressing the bearing pin pressure plate downwards.
Further, the difference value between the diameter of the through hole in the bearing pin supporting plate and the diameter of the second cylindrical section is determined according to the position tolerance of the blind hole in the plug screw. Furthermore, after each bearing pin is pressed by the bearing pin pressing plate and the bearing pin supporting plate, the axial range of motion is only 0.05-0.1 mm.
Furthermore, the bearing pin pressure plate is hexagonal in shape and is used for being matched with a wrench to apply torque.
Further, the rubber pad is a polyurethane rubber pad.
The utility model has the advantages that:
the utility model discloses simple structure, the adjustment is convenient, has a plurality of mutually independent load round pins, and a plurality of load round pins can insert in the corresponding blind hole of bolt terminal surface separately and respectively rather than the contact of place blind hole pore wall, form alone simultaneously and decompose the required moment of torsion of plug screw, can solve the problem that can not get off of decomposition when the plug screw is too tight.
The utility model discloses also can be used to screw up porous plug screw.
Drawings
Fig. 1 is a schematic structural view of a plug screw.
Fig. 2 is a schematic structural view of a common convex pin wrench.
Fig. 3 is an exploded view of an embodiment of the plug screw disassembling tool with an independent bearing pin according to the present invention.
Fig. 4 is a schematic view of the force bearing pin of the present invention.
Fig. 5 is a schematic structural diagram of an embodiment of the plug screw disassembling tool with an independent bearing pin according to the present invention.
Description of reference numerals:
1-bearing pin; 2-bearing pin supporting plate; 3-spring steel wire; 4-rubber pad; 5-a wrench; 6-bearing pin pressure plate; 7-locking the nut; 8-four-hole screw plugs; 9-blind holes; 10-a boss pin; a-tangency.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 3-5, the screw plug disassembling tool with independent bearing pins of the present embodiment is suitable for a four-hole screw plug 9, and includes four independent bearing pins 1, a bearing pin supporting plate 2, a bearing pin pressing plate 7, a polyurethane rubber pad 4, a spring steel wire 3, a lock nut 8 and a wrench 5.
The four independent bearing pins 1 have the same structure and are step pins consisting of a first cylindrical section, a second cylindrical section and a third cylindrical section which are sequentially connected, and the diameters of the first cylindrical section, the second cylindrical section and the third cylindrical section are sequentially decreased progressively. The utility model discloses the axis position that independent load round pin said indicates every load round pin is not fixed, but its excircle separately, independently laminate on each pore wall of plug screw, form the decomposition moment of torsion jointly. The bearing pin supporting plate 2 comprises a bottom plate and an upper cylindrical section; the end face of the bottom is provided with four through holes for respectively installing four bearing pins 1, the diameter of each through hole is 0.5-1 mm larger than the diameter of the second cylindrical section of the bearing pin 1 installed in the through hole (generally determined according to the position tolerance of the blind hole on the screw plug), so that the bearing pin 1 is not blocked when being inserted into the blind hole of the four-hole screw plug 8; the upper portion of upper portion cylinder section is equipped with and is used for the screw thread with lock nut 7 complex, and the lower part is seted up and is used for two antarafacial vertically crossing steel wire mounting holes of installation spring steel wire 4.
The four bearing pins 1 are respectively arranged in four through holes of the bearing pin supporting plate 2, the first cylindrical sections of the bearing pins 1 are respectively positioned above the through holes of the bearing pin supporting plate 2, the second cylindrical sections are respectively positioned in the through holes of the bearing pin supporting plate 2, and the third cylindrical sections are respectively used for being inserted into four blind holes on the four-hole screw plug 9 to provide decomposition torque.
Because the diameter of the through hole on the bearing pin supporting plate 2 is larger than that of the second cylindrical section of the bearing pin 1 in the bearing pin supporting plate, the bearing pin 1 can do translational motion in a certain radial range along the through hole where the bearing pin is located, and therefore when the third cylindrical section of the bearing pin 1 is inserted into the blind hole on the four-hole screw plug 9, the position of the bearing pin can be adjusted and matched according to the position of the blind hole on the four-hole screw plug 9, and the situation that the bearing pin cannot be inserted into the blind hole due to the fact that the hole positions are inconsistent is avoided.
The bearing pin pressure plate 6 is sleeved on the upper cylindrical section of the bearing pin supporting plate 2, and the bearing pin 1 is clamped by the bearing pin pressure plate and the bearing pin pressure plate in a matching mode, so that the bearing pin 1 only has a moving range of 0.05-0.1 mm in the axial direction, and the axes of the four bearing pins 1 are always in a parallel state. The bearing pin pressure plate 6 is a hexagonal boss in shape, so that the bearing pin pressure plate can be conveniently matched with the wrench 5 to apply torque; the middle part of the bearing pin pressure plate 7 is provided with a central through hole for the upper cylindrical section of the bearing pin supporting plate 2 to pass through, and the central through hole is a unthreaded hole and is not threaded.
The polyurethane rubber pad 4 is arranged between the bearing pin pressure plate 6 and the bearing pin 1, and applies force to the bearing pin 1 by utilizing the deformation of the material thereof to provide decomposition torque; in order to avoid the play of the polyurethane rubber pad 4 caused by friction force when the polyurethane rubber pad is decomposed, a plurality of grooves are arranged on the lower end surface of the force bearing pin pressing plate 6, and the number and the positions of the grooves are the same as those of the force bearing pins 1; the plurality of polyurethane rubber pads 4 are respectively embedded in the grooves of the bearing pin pressure plates 6.
The number of the spring steel wires 3 is two, and the spring steel wires are used for shifting each bearing pin 1 by utilizing the elasticity thereof to enable the bearing pin to be always close to the hole wall of the blind hole where the bearing pin is located. A spring steel wire 3 is arranged in one of the steel wire mounting holes on the upper cylindrical section of the bearing pin supporting plate 2 in a tight fit manner, and two ends of the spring steel wire 3 are respectively inserted into the two oppositely arranged bearing pins 1; the other spring steel wire 3 is tightly matched and installed in a steel wire installation hole in the other direction on the upper cylindrical section of the bearing pin supporting plate 2, and two ends of the other spring steel wire are respectively inserted into the other two oppositely-arranged bearing pins 1. The distance between the hole axis of the through hole where the bearing pin 1 is located and the axis of the bearing pin 1 is 0.15-0.3 mm, when the screw plug is disassembled, each bearing pin 1 needs to be inserted into the hole of the screw plug 8, and because the positions of the bearing pin pieces 1 slightly deviate to the clockwise direction, the excircle of each bearing pin piece 1 is ensured to be attached to the hole walls of the four-hole screw plugs under the action of the elastic force of the spring steel wire 3.
The locking nut 7 is arranged above the bearing pin pressure plate 6 and is in threaded fit with the stud section at the upper part of the bearing pin supporting plate 2, and the bearing pin pressure plate 6 can be pressed downwards by screwing the locking nut 7.
The inner hexagon of the wrench 5 is matched with the outer hexagon of the bearing pin pressing plate 6, and the moment is applied to the bearing pin pressing plate 6.
The method for decomposing the four-hole screw plug 8 by using the embodiment comprises the following steps:
And 2, integrally holding the decomposing tool, aligning the four bearing pins 1 of the decomposing tool with the four blind holes on the end face of the screw plug 8, and forcibly pressing down to insert the four bearing pins 1 into the four blind holes respectively. At this time, due to the elastic action of the spring steel wire 3, the outer circles of the four bearing pins 1 respectively contact the hole walls of the four blind holes on the end face of the screw plug 8 to jointly form torque, so that the problem that the four-hole screw plug 8 cannot be separated when being too tight is solved, and the stress state of each independent bearing pin 1 is shown in fig. 4.
And 3, screwing the locking nut 7, wherein the bearing pin supporting plate 2 and the bearing pin pressing plate 6 can tightly press the step surface of the bearing pin 1, and the polyurethane rubber pad 4 generates a certain compression amount at the moment, namely the end surface of the bearing pin 1 is embedded with the polyurethane rubber pad 4 for a certain distance.
And 4, sleeving the wrench 5 on the hexagonal boss of the bearing pin pressure plate 6, and screwing the wrench 5 anticlockwise, so that torque is applied to the screw plug 8 through the polyurethane rubber pad 4 and the bearing pin 1 to loosen the screw plug 8. Because the end face of the bearing pin 1 is embedded with the polyurethane rubber pad 4, the contact surface can not slip.
The present invention has been described above by taking only the screw plug disassembling tool for disassembling and assembling the four-hole screw plug as an example. In other embodiments, the number of the bearing pins in the present invention may also be six or eight, and the specific number of the bearing pins is determined according to the number of the blind holes on the end face of the plug screw to be disassembled and assembled.
Claims (5)
1. The utility model provides a plug screw decomposes instrument with independent load pin which characterized in that: the device comprises a plurality of independent force bearing pins, force bearing pin supporting plates, force bearing pin pressing plates, rubber pads, a plurality of spring steel wires and locking nuts;
each bearing pin has the same structure and is a step pin formed by connecting a first cylindrical section, a second cylindrical section and a third cylindrical section with the diameters decreasing progressively;
the bearing pin supporting plate comprises a bottom plate and an upper cylindrical section; the end face of the bottom is provided with a plurality of through holes for respectively installing the plurality of force bearing pins, the aperture of each through hole is smaller than the diameter of the first cylindrical section of each force bearing pin and larger than the diameter of the second cylindrical section, and the positions and the number of the through holes correspond to the positions and the number of blind holes on the screw plug to be decomposed; the upper part of the upper cylindrical section is provided with threads matched with the locking nut, and the lower part of the upper cylindrical section is provided with a plurality of steel wire mounting holes which are intersected in different surfaces and used for mounting the plurality of spring steel wires;
the bearing pin pressure plate is sleeved on the upper cylindrical section of the bearing pin supporting plate, and the bearing pin pressure plate and the bearing pin supporting plate are matched to clamp the bearing pin and ensure that the axes of the bearing pins are parallel to each other;
a plurality of rubber pads are respectively arranged between the bearing pin pressure plate and each bearing pin and embedded at the lower end of the bearing pin pressure plate;
the spring steel wires are respectively installed in the steel wire installation holes in a close fit manner, the end parts of the spring steel wires are positioned outside the steel wire installation holes and used for elastically shifting the bearing pins to enable the bearing pins to be always close to the hole walls of the blind holes where the bearing pins are positioned;
the locking nut is arranged above the bearing pin pressure plate, is in threaded fit connection with the upper cylindrical section of the bearing pin supporting plate and is used for pressing the bearing pin pressure plate downwards.
2. The plug screw disassembly tool with independent bearing pin of claim 1, wherein: and the difference between the diameter of the through hole on the bearing pin supporting plate and the diameter of the second cylindrical section is determined according to the position tolerance of the blind hole on the plug screw.
3. The plug screw disassembling tool with the independent bearing pin of claim 1, wherein: after each bearing pin is pressed by the bearing pin pressing plate and the bearing pin supporting plate, the axial range of motion is only 0.05-0.1 mm.
4. The plug screw disassembly tool with independent bearing pin of any one of claims 1-3, wherein: the bearing pin pressure plate is hexagonal and used for being matched with a wrench to apply torque.
5. The plug screw disassembly tool with independent bearing pin of claim 4, wherein: the rubber pad is a polyurethane rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123293503.7U CN217195061U (en) | 2021-12-26 | 2021-12-26 | Plug screw disassembling tool with independent bearing pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123293503.7U CN217195061U (en) | 2021-12-26 | 2021-12-26 | Plug screw disassembling tool with independent bearing pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217195061U true CN217195061U (en) | 2022-08-16 |
Family
ID=82784181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123293503.7U Active CN217195061U (en) | 2021-12-26 | 2021-12-26 | Plug screw disassembling tool with independent bearing pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217195061U (en) |
-
2021
- 2021-12-26 CN CN202123293503.7U patent/CN217195061U/en active Active
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