CN109505978B - Radial flexible compensation type internal expansion plugging mechanism - Google Patents
Radial flexible compensation type internal expansion plugging mechanism Download PDFInfo
- Publication number
- CN109505978B CN109505978B CN201811636489.6A CN201811636489A CN109505978B CN 109505978 B CN109505978 B CN 109505978B CN 201811636489 A CN201811636489 A CN 201811636489A CN 109505978 B CN109505978 B CN 109505978B
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- Prior art keywords
- inner expansion
- compensation
- connecting plate
- hole
- bolt
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- 230000000694 effects Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/068—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing swelling under working conditions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Valves (AREA)
Abstract
The radial flexible compensation type internal expansion plugging mechanism comprises an air cylinder, wherein a piston rod of the air cylinder is connected with a connecting plate; the lower part of the connecting plate is provided with a plurality of compensating holes which are uniformly distributed in circumference; the lower part of the connecting plate is provided with a central air inlet hole which is surrounded by the compensation hole; the connecting plate is connected with an inner expansion base through bolts; the inner expansion base is provided with a plurality of screw holes corresponding to the compensation holes, and the end parts of the screw bodies of the bolts penetrate through the compensation holes and are screwed into the corresponding screw holes; a spring is sleeved outside the bolt body of the bolt, two ends of the spring are respectively abutted against the connecting plate and the inner expanding base, and the head of the bolt is clamped on the left side wall of the connecting plate. The radial flexible compensation type internal expansion plugging mechanism can enable the mechanism to have certain flexibility, so that radial compensation is realized, and even if the position of the inner hole of the workpiece deviates, the mechanism can be quickly and accurately inserted into the inner hole of the workpiece through the compensation guiding effect.
Description
Technical Field
The invention relates to a plugging mechanism, in particular to a radial flexible compensation type internal expansion plugging mechanism.
Background
The plugging mechanism is a device for detecting the tightness of a workpiece, in practical application, the inner hole of the workpiece can cause position deviation due to factors such as design, processing and assembly, so that the plugging mechanism cannot be quickly and accurately inserted into the inner hole of the workpiece, the plugging efficiency is affected, in severe cases, the tightness during plugging can not be ensured, the practical detection quality is affected, and certain detection hidden danger exists.
Disclosure of Invention
The invention aims to solve the technical problem of providing a radial flexible compensation type internal expansion plugging mechanism which can enable the mechanism to have certain flexibility, so that radial compensation is realized, and even if the position of an inner hole of a workpiece deviates, the mechanism can be quickly and accurately inserted into the inner hole of the workpiece through the compensation guiding effect.
The technical scheme adopted for solving the technical problems is as follows:
The invention discloses a radial flexible compensation type internal expansion plugging mechanism, which comprises an air cylinder and is characterized in that: a piston rod of the air cylinder is connected with a connecting plate; the lower part of the connecting plate is provided with a plurality of compensating holes which are uniformly distributed in circumference; the lower part of the connecting plate is provided with a central air inlet hole which is surrounded by the compensation hole; the connecting plate is connected with an inner expansion base through bolts; the inner expansion base is provided with a plurality of screw holes corresponding to the compensation holes, and the end parts of the screw bodies of the bolts penetrate through the compensation holes and are screwed into the corresponding screw holes; a spring is sleeved outside the bolt body of the bolt, two ends of the spring respectively prop against the connecting plate and the inner expanding base, and the head of the bolt is clamped on the left side wall of the connecting plate; the diameter of the bolt body of the bolt is smaller than the diameter of the compensation hole, and a compensation gap exists between the outer wall of the bolt body of the bolt and the inner wall of the compensation hole; an air inlet pipeline is arranged in the center of the left side wall of the inner expansion base, and a screw hole communicated with the air inlet pipeline is arranged in the center of the right side wall of the inner expansion base; the screw hole is in screw connection with an inner expansion shaft tube, and the right end of the inner expansion shaft tube is in screw connection with a locking cap; the inner expansion base is sleeved with an inner expansion valve body, the inner expansion shaft tube is sleeved with an inner expansion push tube, and the right end face of the inner expansion valve body is attached to the left end face of the inner expansion push tube; an inner expansion plug is arranged between the inner expansion push tube and the locking cap, and the inner expansion plug is made of rubber; the inner expansion valve body can drive the inner expansion push pipe to move right to extrude the inner expansion plug.
The inner expansion base is provided with a first sliding step matched with the inner expansion valve body; an upper air inlet is arranged on the outer wall of the inner expansion base; an air outlet hole communicated with the upper air inlet hole is formed in the left side wall surface of the first sliding step, and the hole at the right end of the air outlet hole is blocked and sealed by the outer wall of the inner expansion valve body; a limiting convex ring is arranged outside the inner expansion shaft tube; the limiting convex ring and the outer wall of the inner expansion shaft tube are provided with a second sliding step matched with the inner expansion push tube; the right end port of the inner expansion valve body is provided with a travel groove matched with the limit convex ring.
The outer wall of the inner expansion base, which is attached to the inner expansion valve body, is provided with a plurality of annular grooves which are transversely distributed; and an O-shaped ring matched with the annular groove is arranged in the annular groove.
The outer diameter of the locking cap is larger than that of the internal expansion plug.
The beneficial effects of the invention are as follows:
Compared with the prior art, the radial flexible compensation type internal expansion plugging mechanism adopting the structure disclosed by the invention has the advantages that due to the existence of a compensation gap, the bolt can compensate in a swinging manner, so that the position of the axis of the internal expansion shaft tube is changed, and finally the internal expansion shaft tube is coaxial with the inner hole of a workpiece, thereby completing the flexible plugging effect, realizing the rapid and accurate insertion of the internal expansion plug, improving the plugging efficiency, and then the internal expansion plug can be extruded immediately by the internal expansion push tube, and the inner hole of the workpiece is sealed by the internal expansion plug along with the extrusion of the internal expansion plug, so that the plugging effect is ensured, and the tightness detection of the workpiece is carried out at the moment, and the detection quality can be effectively ensured.
Drawings
FIG. 1 is a cross-sectional view of a radially compliant compensated intumescing occlusion mechanism of the present invention;
Fig. 2 is an enlarged view of a portion a of fig. 1;
FIG. 3 is a cross-sectional view of the radially compliant compensating intumescing closure mechanism of the present invention inserted into the internal bore of a workpiece for intumescing closure;
FIG. 4 is a cross-sectional view of the radial compliance compensation type intumescence plugging mechanism of the present invention;
Fig. 5 is a schematic structural view of the radial flexible compensation type internal expansion plugging mechanism of the invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
Referring to fig. 1 to 5, the present invention provides a radial flexible compensation type internal expansion plugging mechanism, which comprises a cylinder 1, wherein a piston rod 101 of the cylinder 1 is connected with a connecting plate 2; the lower part of the connecting plate 2 is provided with a plurality of compensating holes 3 which are uniformly distributed in circumference; the lower part of the connecting plate 2 is provided with a central air inlet hole 4, and the central air inlet hole 4 is surrounded by the compensation hole 3; the connecting plate 2 is connected with an inner expansion base 6 through a bolt 5; the inner expansion base 6 is provided with a plurality of screw holes 7 corresponding to the positions of the compensation holes 3, and the end parts of the screw bodies 501 of the bolts 5 penetrate through the compensation holes 3 and are screwed into the corresponding screw holes 7; a spring 8 is sleeved outside the screw body 501 of the bolt 5, two ends of the spring 8 respectively prop against the connecting plate 2 and the inner expanding base 6, and the head 502 of the bolt 5 is clamped on the left side wall of the connecting plate 2; the diameter of the screw body 501 of the bolt 5 is smaller than the diameter of the compensation hole 3, and a compensation gap 9 exists between the outer wall of the screw body 501 of the bolt 5 and the inner wall of the compensation hole 3; an air inlet pipeline 10 is arranged in the center of the left side wall of the inner expansion base 6, and a screw hole 11 communicated with the air inlet pipeline 10 is arranged in the center of the right side wall of the inner expansion base 6; the screw hole 11 is in screw connection with an inner expansion shaft tube 12, and the right end of the inner expansion shaft tube 12 is in screw connection with a locking cap 13; an inner expansion valve body 14 is sleeved outside the inner expansion base 6, an inner expansion push tube 15 is sleeved outside the inner expansion shaft tube 12, and the right end face of the inner expansion valve body 14 is attached to the left end face of the inner expansion push tube 15; an inner expansion plug 16 is arranged between the inner expansion push tube 15 and the locking cap 13, and the inner expansion plug 16 is made of rubber; the inner expansion valve body 14 can drive the inner expansion push pipe 15 to move right to extrude the inner expansion plug 16.
The inner expansion base 6 is provided with a first sliding step 17 matched with the inner expansion valve body 14; an upper air inlet hole 18 is formed in the outer wall of the inner expansion base 6; an air outlet hole 19 communicated with the upper air inlet hole 18 is formed in the left side wall surface of the first sliding step 17, and the hole at the right end of the air outlet hole 19 is blocked and sealed by the outer wall of the inner expansion valve body 14; a limiting convex ring 20 is arranged outside the inner expansion shaft tube 12; the limiting convex ring 20 and the outer wall of the inner expansion shaft tube 12 are provided with a second sliding step 21 matched with the inner expansion push tube 15; the right end port of the inner expansion valve body 14 is provided with a travel groove 22 matched with the limit convex ring 20.
The outer wall of the inner expansion base 6, which is attached to the inner expansion valve body 14, is provided with a plurality of annular grooves 23 which are transversely distributed; an O-ring 24 matched with the annular groove 23 is arranged in the annular groove.
The outer diameter of the locking cap is larger than that of the internal expansion plug.
The application method of the invention is as follows:
In the actual use process, the air cylinder 1 is fixed on the frame, when the tightness detection is needed to be carried out on a workpiece, a worker can start the air cylinder 1, when the air cylinder 1 is started, the piston rod 101 of the air cylinder 1 is propped outwards, the connecting plate 2 moves towards the direction of the workpiece, at the moment, the right end of the inner expansion shaft tube 12 is directly inserted into the inner hole 25 of the workpiece with the inner expansion plug 16, even if the inner hole 25 of the workpiece has position deviation, due to the existence of the compensation gap 9, the bolt 5 can compensate in a swinging mode, the position of the axle center of the inner expansion shaft tube 12 is changed, and finally, the inner expansion shaft tube 12 and the inner hole 25 of the workpiece are coaxial, so that the flexible plugging effect is achieved, the quick and accurate insertion of the inner expansion plug 16 is realized, and the plugging efficiency is improved.
When the inner expansion plug 16 is inserted into the inner hole of the workpiece, the staff can enter the air through the upper air inlet hole 18, air enters the air outlet hole 19 along with the air, the air pressure in the air outlet hole 19 is increased along with the continuous air entering, the high-pressure air pushes the inner expansion valve body 14 through the right end of the air outlet hole 19, at the moment, the inner expansion valve body 14 moves right along the first sliding step 17, the inner expansion push tube 15 is pushed to the direction of the inner expansion plug 16 by the inner expansion push tube 15 by the right-moving inner expansion valve body 14, the outer diameter of the inner expansion plug 16 continuously begins to be increased, the tightness between the inner expansion plug 16 and the inner hole 25 of the workpiece continuously increases, in the right movement process of the inner expansion valve body 14, the gap between the inner wall surface of the inner expansion valve body 14 opposite to the hole opening at the right end of the air outlet hole 19 and the outer wall surface of the inner expansion base 6 where the hole at the right end of the air outlet hole 19 is located continuously increases, however, the inner expansion valve body 14 and the inner expansion base 6 are bonded and sealed through the wall surface, so that the condition that air leakage affects the right movement of the inner expansion valve body 14 is not needed, the limit convex ring 20 can effectively limit the right movement stroke of the inner expansion valve body 14, the extrusion degree of the inner expansion push pipe 15 to the inner expansion plug 16 is limited, the problem that the inner expansion plug 16 is excessively extruded is avoided, after the inner expansion plug 16 is plugged through expansion, workers can sequentially inject air into the inner hole 25 of a workpiece through the central air inlet hole 4, the air inlet pipeline 10 and the inner passage of the inner expansion shaft pipe 12, the detection of the tightness of the workpiece is completed, and the detection quality can be effectively ensured after the plugging quality of the inner expansion plug is ensured.
The outer wall that interior inflation base 6 and interior inflation valve body 14 are laminated is equipped with a plurality of ring grooves 23 that are transverse distribution, installs rather than assorted O type circle 24 in the ring groove 23, and the existence of O type circle 24 can further improve the leakproofness between interior inflation base 6 and the interior inflation valve body 14, guarantees in the maximum circumstances that can not appear leaking gas when interior inflation valve body 14 is promoted by high-pressure gas.
The outer diameter of the locking cap 13 is larger than that of the inner expansion plug 16, expansion towards the outer ring when the inner expansion plug 16 is extruded can be guaranteed to the greatest extent under the limitation of the locking cap 13, lateral expansion is avoided, sealing performance between the inner expansion plug 16 and the inner hole 25 of a workpiece is effectively guaranteed, and plugging quality of the inner expansion plug 16 is guaranteed.
Claims (4)
1. The utility model provides a radial flexibility compensation formula intumescence shutoff mechanism, includes cylinder, its characterized in that: a piston rod of the air cylinder is connected with a connecting plate; the lower part of the connecting plate is provided with a plurality of compensating holes which are uniformly distributed in circumference; the lower part of the connecting plate is provided with a central air inlet hole which is surrounded by the compensation hole; the connecting plate is connected with an inner expansion base through bolts; the inner expansion base is provided with a plurality of screw holes corresponding to the compensation holes, and the end parts of the screw bodies of the bolts penetrate through the compensation holes and are screwed into the corresponding screw holes; a spring is sleeved outside the bolt body of the bolt, two ends of the spring respectively prop against the connecting plate and the inner expanding base, and the head of the bolt is clamped on the left side wall of the connecting plate; the diameter of the bolt body of the bolt is smaller than the diameter of the compensation hole, and a compensation gap exists between the outer wall of the bolt body of the bolt and the inner wall of the compensation hole; an air inlet pipeline is arranged in the center of the left side wall of the inner expansion base, and a screw hole communicated with the air inlet pipeline is arranged in the center of the right side wall of the inner expansion base; the screw hole is in screw connection with an inner expansion shaft tube, and the right end of the inner expansion shaft tube is in screw connection with a locking cap; the inner expansion base is sleeved with an inner expansion valve body, the inner expansion shaft tube is sleeved with an inner expansion push tube, and the right end face of the inner expansion valve body is attached to the left end face of the inner expansion push tube; an inner expansion plug is arranged between the inner expansion push tube and the locking cap, and the inner expansion plug is made of rubber; the inner expansion valve body can drive the inner expansion push pipe to move right to extrude the inner expansion plug.
2. The radially compliant compensating intumescing occlusion mechanism of claim 1, wherein: the inner expansion base is provided with a first sliding step matched with the inner expansion valve body; an upper air inlet is arranged on the outer wall of the inner expansion base; an air outlet hole communicated with the upper air inlet hole is formed in the left side wall surface of the first sliding step, and the hole at the right end of the air outlet hole is blocked and sealed by the outer wall of the inner expansion valve body; a limiting convex ring is arranged outside the inner expansion shaft tube; the limiting convex ring and the outer wall of the inner expansion shaft tube are provided with a second sliding step matched with the inner expansion push tube; the right end port of the inner expansion valve body is provided with a travel groove matched with the limit convex ring.
3. The radially compliant compensating intumescing occlusion mechanism of claim 1, wherein: the outer wall of the inner expansion base, which is attached to the inner expansion valve body, is provided with a plurality of annular grooves which are transversely distributed; and an O-shaped ring matched with the annular groove is arranged in the annular groove.
4. The radially compliant compensating intumescing occlusion mechanism of claim 1, wherein: the outer diameter of the locking cap is larger than that of the internal expansion plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636489.6A CN109505978B (en) | 2018-12-29 | 2018-12-29 | Radial flexible compensation type internal expansion plugging mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636489.6A CN109505978B (en) | 2018-12-29 | 2018-12-29 | Radial flexible compensation type internal expansion plugging mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109505978A CN109505978A (en) | 2019-03-22 |
| CN109505978B true CN109505978B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811636489.6A Active CN109505978B (en) | 2018-12-29 | 2018-12-29 | Radial flexible compensation type internal expansion plugging mechanism |
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| CN (1) | CN109505978B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926711B (en) * | 2020-02-12 | 2020-05-22 | 南京泰普森自动化设备有限公司 | Plugging device |
| CN112345164B (en) * | 2020-11-03 | 2022-12-16 | 江苏华日圣油气井下工具有限公司 | Calibration rubber plug for casing sealing test |
| CN113432807A (en) * | 2021-06-28 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Universal internal expansion type sealing inspection joint and inspection method thereof |
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| JPH09296871A (en) * | 1996-05-07 | 1997-11-18 | Matsushita Electric Ind Co Ltd | Seal structure and combination faucet device using it |
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2018
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| JPH09296871A (en) * | 1996-05-07 | 1997-11-18 | Matsushita Electric Ind Co Ltd | Seal structure and combination faucet device using it |
| CN202938967U (en) * | 2012-12-13 | 2013-05-15 | 上海莲南汽车附件有限公司 | Cylinder internal-expanding seal apparatus |
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| CN104215399A (en) * | 2014-09-23 | 2014-12-17 | 安吉恒盛热能机械有限公司 | Automatic compensating structure for end part sealing of small-diameter straight pipe in air pressure density test |
| CN204175956U (en) * | 2014-10-09 | 2015-02-25 | 上海汽车变速器有限公司 | Internal-expansion type machine plugging mechanism |
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