CN205533964U - Inertia sealed plug screw for oil buffer - Google Patents
Inertia sealed plug screw for oil buffer Download PDFInfo
- Publication number
- CN205533964U CN205533964U CN201521120953.8U CN201521120953U CN205533964U CN 205533964 U CN205533964 U CN 205533964U CN 201521120953 U CN201521120953 U CN 201521120953U CN 205533964 U CN205533964 U CN 205533964U
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- China
- Prior art keywords
- screw rod
- screw
- spool
- oil buffer
- cambered surface
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Abstract
The utility model provides an inertia sealed plug screw for oil buffer, including the plug screw main part, the plug screw main part includes nut and screw rod, and top -down is equipped with sealing washer, case and hole in proper order and use circlip in the nut and screw rod formula structure as an organic whole, screw rod, and the upper end of case is equipped with the arc arch, and the periphery of screw rod is equipped with first exhaust hole and the second hole of exhausting, the utility model discloses simple structure, reasonable in design, not only difficult emergence of case drops, and the leakproofness has also obtained great promotion, simultaneously for the bubble escape velocity of hydraulic oil, improved oil buffer's flexibility ratio, promoted oil buffer's result of use.
Description
Technical field
This utility model relates to elevator safety field, a kind of sealed plug screw of oil buffer inertia being installed on elevator.
Background technology
Oil buffer is a kind of hydraulic buffer, and its operation principle is: when oil buffer is impacted by car and counterweight, plunger moves downward, the oil in compression cylinder, and oil sprays to plunger cavity by torus knot discharge orifice.When oil is by torus knot discharge orifice, owing to flow section reduces suddenly, eddy current will be formed, make the particle in liquid mutually draw and hit, rub, convert kinetic energy into heat and dissipate, thus consume the kinetic energy of elevator, make car or counterweight stop rallentando.Oil buffer utilizes the damping action that liquid flows, buffering car or the impact of counterweight, and when car or counterweight leave buffer, plunger, under the effect of back-moving spring, upwards resets, and oil flows back to oil cylinder again, recovers normal condition.Owing to oil buffer carries out buffering in catabiotic mode, therefore without rebound effect.Simultaneously as variable rod effect, plunger under press time, the sectional area of torus knot discharge orifice progressively diminishes, can make electricity sample through punching close to uniformly retarded motion.Thus, oil buffer has the advantage of stable buffering, and in the case of the condition of use is identical, the stroke needed for oil buffer can reduce half than spring buffer.So oil buffer is applicable to various speed elevator.
The primary structure of oil buffer is that the composition such as bar, spring beaten by body, axle center, bearing, inner tube, plunger barrel, switch, and the fixed form of existing plunger barrel upper valve core mostly is screwed plug hair style, it is poor to there is sealing effectiveness in this fixed form, the shortcoming that oil spill rate is higher, and the steam vent of existing spool is relatively small, less, exhaust efficiency is relatively low.
Utility model content
For the problems referred to above, the utility model proposes a kind of sealed plug screw of oil buffer inertia.
For solving above technical problem, the technical scheme that this utility model provides is:
nullA kind of sealed plug screw of oil buffer inertia，It is characterized in that，Including plug screw main body，Described plug screw main body includes nut and screw rod，Described nut and screw rod are integral type structure，The lower end of nut is provided with external screw thread，Screw rod is the cylinder of hollow，Its in the internal diameter of hollow cylindrical be R1，Sealing ring it is sequentially provided with from top to bottom in screw rod、Spool and circlip for hole，Described sealing ring is hydropneumatic O，In annular，Its in the external diameter of annular be R2，Described R2 ＞ R1，Sealing ring and screw rod interference fit，Described spool is cylinder，Its in cylindrical a diameter of R3，Described R3=R1，Spool coordinates with screw clearance，Described circlip for hole is annular，Its in the external diameter of annular be R4，Described R4 ＞ R1，Circlip for hole elasticity snaps in screw rod；
The upper end of described spool is provided with arc convex, described arc convex includes being positioned at first cambered surface at center and being positioned at the second cambered surface of periphery, the cross section of described first cambered surface is circular arc, its in circular arc corresponding to central angle be α, the cross section of described second cambered surface is circular arc, its in circular arc corresponding to central angle be β, the first cambered surface is tangent with the second cambered surface；
The periphery of described screw rod is provided with first row pore and second row pore, the quantity of described first row pore is 2, it is symmetricly set on screw rod, first row pore is positioned in the middle part of screw rod, and connects inside screw, and its internal diameter is r1, the quantity of described second row pore is 1, being positioned at screw tip, its internal diameter is r2, described r2 ＞ r1；
Further, a length of L1 of described screw rod, spool is L2 with the entire length of arc convex, described L2 ＜ 1/2*L1；
Further, the upper end of described nut is provided with flat recess or cross recess.
Operation principle of the present utility model:
During work: when oil buffer is impacted, sealed plug screw does motion vertically downward together with oil buffer, due to effect of inertia, spool does motion vertically upward relative to plug screw main body, make sealing ring forced compression, spool has blocked the first row QI KOU of side, and the mating reaction of sealing ring and spool has sealed the second exhaust port at top, thus forms a confined space；The movement time of oil buffer is the shortest, and therefore the air within oil buffer is immediately exposed to compression, and pressure increases, and oppresses spool so that spool will not fall after rise, thus has reached sealing function；
During reset: oil buffer moves upward under the effect of back-moving spring, sealed plug screw starts air-breathing, spool is resetted by the percussion of external air flow, all steam vents are all opened, so that buffer internal pressure and air rebalancing, and owing to there being 3 steam vents, accelerate the bubbles escape speed of hydraulic oil, shorten the interval time of subsequent operation.
The beneficial effects of the utility model are:
A kind of sealed plug screw of oil buffer inertia that the utility model proposes, including plug screw main body, plug screw main body includes nut and screw rod, nut and screw rod are integral type structure, sealing ring it is sequentially provided with from top to bottom in screw rod, spool and circlip for hole, the upper end of spool is provided with arc convex, the periphery of screw rod is provided with first row pore and second row pore, this utility model simple in construction, reasonable in design, not only spool is not susceptible to come off, sealing have also been obtained and greatly promotes, simultaneously, accelerate the bubbles escape speed of hydraulic oil, improve the flexibility ratio of oil buffer, improve the using effect of oil buffer.
Simultaneously, the fixed form of spool of the present utility model have employed ring type, instead of the spool fixed form of original screw plug, possesses simple in construction, efficiency of assembling is high, the feature that cost of manufacture is low, and spool can use punching press or Shooting Technique, cost of manufacture is the lowest, meets the needs of production in enormous quantities.
Accompanying drawing explanation
Fig. 1 this utility model schematic diagram.
Fig. 2 spool schematic diagram.
Fig. 3 utility model works schematic diagram.
Detailed description of the invention
nullA kind of sealed plug screw of oil buffer inertia as depicted，It is characterized in that，Including plug screw main body 1，Described plug screw main body 1 includes nut 2 and screw rod 3，Described nut 2 is integral type structure with screw rod 3，The lower end of nut 2 is provided with external screw thread 4，The screw rod 3 cylinder in hollow，Its in the internal diameter of hollow cylindrical be R1，Sealing ring 5 it is sequentially provided with from top to bottom in screw rod 3、Spool 6 and circlip for hole 7，Described sealing ring 5 is hydropneumatic O，In annular，Its in the external diameter of annular be R2，Described R2 ＞ R1，Sealing ring 5 and screw rod 3 interference fit，Described spool 6 is in cylinder，Its in cylindrical a diameter of R3，Described R3=R1，Spool 6 and screw rod 3 matched in clearance，Described circlip for hole 7 is in annular，Its in the external diameter of annular be R4，Described R4 ＞ R1，Circlip for hole 7 elasticity snaps in screw rod 3；
The upper end of described spool 6 is provided with arc convex 8, described arc convex 8 includes the first cambered surface 9 being positioned at center and is positioned at the second cambered surface 10 of periphery, the cross section of described first cambered surface 9 is circular arc, its in circular arc corresponding to central angle be α, the cross section of described second cambered surface 10 is circular arc, its in circular arc corresponding to central angle be β, the first cambered surface 9 is tangent with the second cambered surface 10；
The periphery of described screw rod 3 is provided with first row pore 11 and second row pore 12, the quantity of described first row pore 11 is 2, it is symmetricly set on screw rod 3, first row pore 11 is positioned in the middle part of screw rod 3, and it is internal to connect screw rod 3, and its internal diameter is r1, the quantity of described second row pore 12 is 1, being positioned at screw rod 3 top, its internal diameter is r2, described r2 ＞ r1；
Further, a length of L1 of described screw rod 3, spool 6 is L2 with the entire length of arc convex 8, described L2 ＜ 1/2*L1；
Further, the upper end of described nut 2 is provided with flat recess or cross recess.
A kind of sealed plug screw of oil buffer inertia that the utility model proposes, including plug screw main body, plug screw main body includes nut and screw rod, nut and screw rod are integral type structure, sealing ring it is sequentially provided with from top to bottom in screw rod, spool and circlip for hole, the upper end of spool is provided with arc convex, the periphery of screw rod is provided with first row pore and second row pore, this utility model simple in construction, reasonable in design, not only spool is not susceptible to come off, sealing have also been obtained and greatly promotes, simultaneously, accelerate the bubbles escape speed of hydraulic oil, improve the flexibility ratio of oil buffer, improve the using effect of oil buffer.
Simultaneously, the fixed form of spool of the present utility model have employed ring type, instead of the spool fixed form of original screw plug, possesses simple in construction, efficiency of assembling is high, the feature that cost of manufacture is low, and spool can use punching press or Shooting Technique, cost of manufacture is the lowest, meets the needs of production in enormous quantities.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should contain in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (3)
- null1. the sealed plug screw of oil buffer inertia，It is characterized in that，Including plug screw main body，Described plug screw main body includes nut and screw rod，Described nut and screw rod are integral type structure，The lower end of nut is provided with external screw thread，Screw rod is the cylinder of hollow，Its in the internal diameter of hollow cylindrical be R1，Sealing ring it is sequentially provided with from top to bottom in screw rod、Spool and circlip for hole，Described sealing ring is hydropneumatic O，In annular，Its in the external diameter of annular be R2，Described R2 ＞ R1，Sealing ring and screw rod interference fit，Described spool is cylinder，Its in cylindrical a diameter of R3，Described R3=R1，Spool coordinates with screw clearance，Described circlip for hole is annular，Its in the external diameter of annular be R4，Described R4 ＞ R1，Circlip for hole elasticity snaps in screw rod；The upper end of described spool is provided with arc convex, described arc convex includes being positioned at first cambered surface at center and being positioned at the second cambered surface of periphery, the cross section of described first cambered surface is circular arc, its in circular arc corresponding to central angle be α, the cross section of described second cambered surface is circular arc, its in circular arc corresponding to central angle be β, the first cambered surface is tangent with the second cambered surface；The periphery of described screw rod is provided with first row pore and second row pore, the quantity of described first row pore is 2, it is symmetricly set on screw rod, first row pore is positioned in the middle part of screw rod, and connects inside screw, and its internal diameter is r1, the quantity of described second row pore is 1, being positioned at screw tip, its internal diameter is r2, described r2 ＞ r1.
- 2. a kind of sealed plug screw of oil buffer inertia as claimed in claim 1, it is characterised in that a length of L1 of described screw rod, spool is L2 with the entire length of arc convex, described L2 ＜ 1/2*L1.
- 3. a kind of sealed plug screw of oil buffer inertia as claimed in claim 1, it is characterised in that the upper end of described nut is provided with flat recess or cross recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120953.8U CN205533964U (en) | 2015-12-31 | 2015-12-31 | Inertia sealed plug screw for oil buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120953.8U CN205533964U (en) | 2015-12-31 | 2015-12-31 | Inertia sealed plug screw for oil buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205533964U true CN205533964U (en) | 2016-08-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521120953.8U Active CN205533964U (en) | 2015-12-31 | 2015-12-31 | Inertia sealed plug screw for oil buffer |
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| Country | Link |
|---|---|
| CN (1) | CN205533964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561596A (en) * | 2018-05-21 | 2018-09-21 | 南通升辉机械有限公司 | A kind of Pneumatic three-way valve |
-
2015
- 2015-12-31 CN CN201521120953.8U patent/CN205533964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561596A (en) * | 2018-05-21 | 2018-09-21 | 南通升辉机械有限公司 | A kind of Pneumatic three-way valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |