CN113977499B - Cabin cover air tightness test clamp - Google Patents
Cabin cover air tightness test clamp Download PDFInfo
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- CN113977499B CN113977499B CN202111588084.1A CN202111588084A CN113977499B CN 113977499 B CN113977499 B CN 113977499B CN 202111588084 A CN202111588084 A CN 202111588084A CN 113977499 B CN113977499 B CN 113977499B
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- canopy
- sliding
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- pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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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
Abstract
The invention relates to a cabin cover air tightness test fixture, wherein an air tightness platform is positioned and connected on the upper surface of a base of a frame structure, and vertical columns are respectively arranged at the front and the back of the lower surface of the base; a sealing rubber ring is arranged around the airtight platform, and the lower edge of the canopy to be detected is tightly pressed and hermetically matched with the sealing rubber ring of the airtight platform by an external pressure device; the external pressing device consists of a front pressing device, a rear pressing device and a side tensioning device; an inspection hole is formed in the middle of the base and is communicated with an inner cavity of the canopy to be detected, the bottom of the inspection hole is connected with a shielding cover plate, and the cover plate is hermetically connected with the base through bolts arranged on the circumference; the base is provided with a sealing joint for inflation and a sealing joint for vacuumizing, which are communicated with the inner cavity of the canopy to be detected. The seat hatch cover air tightness test clamps are uniformly distributed, so that the pressing force is uniform in the automatic locking process, and the sealing performance is improved.
Description
Technical Field
The invention relates to a cockpit cover air tightness test fixture, and belongs to the technical field of fixture tools.
Background
In the existing canopy air-tightness test, the canopy is usually positioned manually and then compressed, because the canopy requires circumferential sealing, if the canopy is positioned inaccurately or the pressing force is not uniform, sealing failure may be caused, which seriously affects the test efficiency of the canopy air-tightness test, and meanwhile, manual positioning may cause too large force application in the canopy locking process to cause the damage of the canopy, which seriously affects the product quality of the canopy, or even causes the scrapping of the integral parts of the canopy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a canopy air tightness test fixture which is provided with a front pressing device, a rear pressing device and a side tensioning device, so that the pressing force is uniform in the automatic locking process, and the sealing performance in the test process is improved.
In order to solve the above problems, the specific technical scheme of the invention is as follows: a cabin cover air tightness test fixture is characterized in that an air tightness platform is positioned and connected on the upper surface of a base of a frame body structure, and vertical columns are respectively arranged on the front and the back of the lower surface of the base; a sealing rubber ring is arranged around the airtight platform, and the lower edge of the canopy to be detected is tightly pressed and hermetically matched with the sealing rubber ring of the airtight platform by an external pressure device; the external pressing device consists of a front pressing device, a rear pressing device and a side tensioning device; an inspection hole is formed in the middle of the base and is communicated with an inner cavity of the canopy to be detected, the bottom of the inspection hole is connected with a shielding cover plate, and the cover plate is hermetically connected with the base through bolts arranged on the circumference; the base is provided with a sealing joint for inflation and a sealing joint for vacuumizing, which are communicated with the inner cavity of the canopy to be detected.
The front pressing device and the rear pressing device are identical in structure and comprise pressing blocks, slideways and pressing cylinders, the slideways are fixedly connected to the airtight platform, the pressing blocks are connected to the slideways in a sliding mode, wedge surface grooves are formed in the positions, contacted with the canopy to be detected, of the pressing blocks, and wedge surfaces of the wedge surface grooves are contacted with the upper surface of the lower edge of the canopy to be detected; one end of the pressing block, which is far away from the wedge surface groove, is connected with a pressing cylinder, the pressing cylinder of the front pressing device is connected with the upper surface of the airtight platform, and the pressing cylinder of the rear pressing device is connected with the upper surface of the base.
The side tensioning device structure comprises a plurality of strip holes which are respectively arranged at the left side and the right side of the airtight platform, and the positions of the strip holes correspond to the positions of lock hooks arranged at the two sides of a canopy to be detected; the lower surface of the base is provided with a plurality of tensioning cylinders, piston rods of the tensioning cylinders are connected with the sliding device, the sliding device is provided with a lock shaft, the axis of the lock shaft is perpendicular to the strip hole, and the lock shaft is in tensioning fit with a lock hook of the canopy to be detected.
The structure of the sliding device is that an outer cover is arranged on the bottom surface of the airtight platform and is positioned under each strip hole in a sealing connection mode, and a peripheral flange of the outer cover is in sealing connection with the airtight platform through a screw and a rubber ring; a mounting seat extending into the strip hole is arranged in the outer cover, and a horizontal slideway is arranged in the mounting seat; a sliding joint is arranged in the mounting seat, the upper end of the sliding joint is connected with a sliding block, the sliding block is in sliding fit with a slide way in the mounting seat, and a lock shaft is connected to the sliding block; the lower end of the sliding joint extends out of the mounting seat and is connected with one end of a sliding shaft, the sliding shaft is horizontally arranged, the other end of the sliding shaft extends out of the outer cover and is connected with a vertical connecting plate, and a sealing ring which is coaxially matched with the sliding shaft in a sealing manner is arranged in a through hole which is matched with the outer cover; the bottom of the outer cover is connected with a support, a cylinder seat of the tensioning cylinder is connected with the support, and a piston rod of the tensioning cylinder is connected with the connecting plate.
And the cylinder seat of the tensioning cylinder is connected with the support through a tension pressure sensor.
The upper end of the sliding joint is provided with a horizontal lug structure, the lug structure is connected with a radial spherical plain bearing, and the radial spherical plain bearing is connected with a sliding block.
The device for applying pressure and tension on two sides of the canopy air tightness test clamp ensures the air tightness requirement of the canopy air tightness test clamp in the test process.
Because the canopy cover to be detected has the latch hook itself, when carrying out the gas tightness test, not only guarantee the sealing performance of airtight platform and canopy cover bottom surface to be detected, carry out the pulling force effect through the lock axle to the latch hook and guarantee sealing performance moreover, simultaneously, also further seal the partial sealing performance of latch hook, improve holistic sealing performance.
Drawings
Fig. 1 is an overall front view of a canopy airtightness test jig.
Fig. 2 is an overall plan view of the canopy airtightness test jig.
Fig. 3 is a front view structural view of the side tension device.
Fig. 4 is a plan view of the side tension device.
FIG. 5 is a schematic view showing a side tension device in a unhooked state.
Fig. 6 is a schematic view of the locking hook state of the side tightening device.
Fig. 7 is a schematic view of the state of the locking hook and the locking shaft.
Detailed Description
The utility model provides a cockpit lid air tightness test anchor clamps, this anchor clamps are used for the air tightness test of the cockpit lid of clamping current small aircraft, so to the description of anchor clamps overall structure has adopted the aircraft position visual angle that is located of aircraft cockpit lid to explain, and the position of the test anchor clamps that the front end of aircraft cockpit lid was located is the front end of test anchor clamps, and the position that the rear end of aircraft cockpit lid was located the test anchor clamps is the rear end of test anchor clamps, and the both sides of aircraft cockpit lid are the both sides of test anchor clamps.
As shown in fig. 1 and 2, the specific structure of the canopy air-tightness test fixture is as follows: the upper surface of a base 1 of the frame body structure is positioned and connected with an airtight platform 2, and the front and the back of the lower surface of the base 1 are respectively provided with an upright post 3; a sealing rubber ring 5 is arranged around the airtight platform 2, and the lower edge of the canopy to be detected is tightly pressed and hermetically matched with the sealing rubber ring 5 of the airtight platform 2 by an external pressure device; the external pressing device consists of a front pressing device 101, a rear pressing device 102 and a side tensioning device 103; an inspection hole 4 is formed in the middle of the base 1, the inspection hole 4 is communicated with an inner cavity of a canopy to be detected, the bottom of the inspection hole is connected with a shielding cover plate 10, and the cover plate 10 is hermetically connected with the base 1 through bolts arranged on the circumference; the base 1 is provided with a sealing joint for inflation and a sealing joint for vacuumizing, which are communicated with the inner cavity of the canopy to be detected. Downward force application is carried out on the canopy through front and back pressure and pulling force on two sides, and the periphery of the canopy is guaranteed to be tightly pressed with a sealing rubber ring of the airtight platform 2, so that airtightness is guaranteed.
The front pressing device and the rear pressing device are identical in structure and comprise pressing blocks 6, slideways 7 and pressing cylinders 8, the slideways 7 are fixedly connected to the airtight platform 2, the pressing blocks 6 are connected to the slideways 7 in a sliding mode, wedge surface grooves are formed in the positions, contacting with the canopy to be detected, of the pressing blocks 6, and wedge surfaces of the wedge surface grooves are in surface contact with the upper surface of the lower edge of the canopy to be detected; one end of the pressing block 6, which is far away from the wedge surface groove, is connected with a pressing cylinder 8, the pressing cylinder 8 of the front pressing device is connected with the upper surface of the airtight platform 2, and the pressing cylinder 8 of the rear pressing device is connected with the upper surface of the base 1.
As shown in fig. 3 and 4, the structure of the side tightening device includes that a plurality of strip holes 21 are respectively formed in the left side and the right side of the airtight platform 2, the positions of the strip holes correspond to the positions of the lock hooks on the two sides of the canopy to be detected, and sealing rings are arranged around the strip holes to ensure the sealing performance with the canopy to be detected; the lower surface of the base 1 is provided with a plurality of tensioning cylinders 22, piston rods of the tensioning cylinders 22 are connected with a sliding device, the sliding device is provided with a lock shaft 23, the axis of the lock shaft 23 is perpendicular to the long hole 21, and the lock shaft 23 is in tensioning fit with a lock hook of the canopy to be detected. As shown in fig. 5 and 6, since the latch hook on the canopy to be detected has the hook groove itself and the hook groove has the inclined surface, as shown in fig. 7, when the latch shaft 23 continuously enters the hook groove, the latch hook drives the canopy to be detected to slightly move down, thereby ensuring that the canopy to be detected is tightly pressed on the upper surface of the airtight platform 2.
The structure of the sliding device is that an outer cover 31 in sealing connection is arranged on the bottom surface of the airtight platform 2 and right below each strip hole 21, and a peripheral flange of the outer cover 31 is in sealing connection with the airtight platform 2 through a screw and a rubber ring; an installation seat 32 extending into the elongated hole 21 is arranged in the outer cover, the installation seat 32 is integrally similar to a box-shaped structure, an inlet corresponding to the length and the width of a lock hook of the canopy to be detected is arranged above the installation seat 32, an elongated hole capable of enabling the sliding joint to slide is arranged below the installation seat, and a horizontal slide way is arranged in the installation seat 32; a sliding joint 33 is arranged in the mounting seat 32, the upper end of the sliding joint 33 is connected with a sliding block 34, the sliding block 34 is in sliding fit with a slide way in the mounting seat 32, and the sliding block 34 is connected with a lock shaft 23; the lower end of the sliding joint 33 extends out of the mounting seat 32 and is connected with one end of a sliding shaft 35, the sliding shaft 35 is horizontally arranged, the other end of the sliding shaft extends out of the outer cover 31 and is connected with a vertical connecting plate 36, and a sealing ring which is coaxially matched with the sliding shaft 35 in a sealing manner is arranged in a through hole which is matched with the outer cover 31 of the sliding shaft 35; a support 37 is connected to the bottom of the outer cover 31, the cylinder base of the tensioning cylinder 22 is connected to the support 37, and the piston rod of the tensioning cylinder 22 is connected to the connecting plate 36. Adopt taut cylinder 22 to drive sliding shaft 35 and remove, make integral connection structure be the S type, not only saved taut cylinder 22 and at the length that occupies, sealed through sliding shaft and dustcoat moreover, guaranteed the sealing performance of latch hook junction.
The cylinder base of the tensioning cylinder 22 is connected to a support 37 via a tension/pressure sensor 38. The tension pressure sensor 38 can measure the tension pressure value of the tensioning cylinder 22, and whether the locking hook and the locking shaft 23 are matched to meet the requirement of downward movement of the locking hook is judged through the tension pressure value.
The upper end of the sliding joint 33 is provided with a horizontal lug structure, the lug structure is connected with a radial spherical plain bearing 39, and the radial spherical plain bearing 39 is connected with the sliding block 34. The sliding joint 33 is connected with the sliding block 34 through a radial spherical plain bearing 39, so that the locking shaft 23 meets the swinging requirement, and the outer circumference of the locking shaft 23 is in orthogonal tangential fit with the surface of the locking hook.
Claims (4)
1. The utility model provides a cockpit lid air tightness test anchor clamps which characterized in that: an airtight platform (2) is positioned and connected on the upper surface of a base (1) of the frame body structure, and upright posts (3) are respectively arranged at the front and the back of the lower surface of the base (1); a sealing rubber ring (5) is arranged around the airtight platform (2), and the lower edge of the canopy to be detected is tightly pressed and hermetically matched with the sealing rubber ring (5) of the airtight platform (2) by an external pressure device; the external pressing device consists of a front pressing device (101), a rear pressing device (102) and a side tensioning device (103); an inspection hole (4) is formed in the middle of the base (1), the inspection hole (4) is communicated with an inner cavity of a canopy to be detected, the bottom of the inspection hole is connected with a shielded cover plate (10), and the cover plate (10) is hermetically connected with the base (1) through bolts arranged on the circumference; the base (1) is provided with a sealing joint for inflation and a sealing joint for vacuumizing which are communicated with the inner cavity of the canopy to be detected; the front pressing device and the rear pressing device are identical in structure and comprise pressing blocks (6), slideways (7) and pressing cylinders (8), the slideways (7) are fixedly connected to the airtight platform (2), the slideways (7) are connected with the pressing blocks (6) in a sliding mode, wedge surface grooves are formed in the positions, contacting with the canopy cover to be detected, of the pressing blocks (6), and wedge surfaces of the wedge surface grooves are in surface contact with the upper surface of the lower edge of the canopy cover to be detected; one end of the pressing block (6) far away from the wedge surface groove is connected with a pressing cylinder (8), the pressing cylinder (8) of the front pressing device is connected with the upper surface of the airtight platform (2), and the pressing cylinder (8) of the rear pressing device is connected with the upper surface of the base (1); the side tensioning device structure comprises a plurality of strip holes (21) which are respectively arranged at the left side and the right side of an airtight platform (2), and the positions of the strip holes correspond to the positions of lock hooks arranged at the two sides of a canopy to be detected; the lower surface of the base (1) is provided with a plurality of tensioning cylinders (22), piston rods of the tensioning cylinders (22) are connected with a sliding device, the sliding device is provided with a lock shaft (23), the axis of the lock shaft (23) is perpendicular to the strip hole (21), and the lock shaft (23) is in tensioning fit with a lock hook of a cabin cover to be detected.
2. A canopy airtightness test jig according to claim 1, wherein: the structure of the sliding device is that an outer cover (31) in sealing connection is arranged on the bottom surface of the airtight platform (2) and right below each strip hole (21), and a peripheral flange of the outer cover (31) is in sealing connection with the airtight platform (2) through a screw and a rubber ring; a mounting seat (32) extending into the strip hole (21) is arranged in the outer cover, and a horizontal slideway is arranged in the mounting seat (32); a sliding joint (33) is arranged in the mounting seat (32), the upper end of the sliding joint (33) is connected with a sliding block (34), the sliding block (34) is in sliding fit with a slide way in the mounting seat (32), and the sliding block (34) is connected with a lock shaft (23); the lower end of the sliding joint (33) extends out of the mounting seat (32) and is connected with one end of a sliding shaft (35), the sliding shaft (35) is horizontally arranged, the other end of the sliding shaft extends out of the outer cover (31) and is connected with a vertical connecting plate (36), and a sealing ring which is coaxially matched with the sliding shaft (35) in a sealing mode is arranged in a through hole formed by matching the sliding shaft (35) with the outer cover (31); a support (37) is connected to the bottom of the outer cover (31), a cylinder seat of the tensioning cylinder (22) is connected with the support (37), and a piston rod of the tensioning cylinder (22) is connected with the connecting plate (36).
3. A canopy airtightness test jig according to claim 2, wherein: the cylinder base of the tensioning cylinder (22) is connected with a support (37) through a tension pressure sensor (38).
4. A canopy airtightness test jig according to claim 2, wherein: the upper end of the sliding joint (33) is provided with a horizontal lug structure, the lug structure is connected with a radial spherical plain bearing (39), and the radial spherical plain bearing (39) is connected with a sliding block (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111588084.1A CN113977499B (en) | 2021-12-23 | 2021-12-23 | Cabin cover air tightness test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111588084.1A CN113977499B (en) | 2021-12-23 | 2021-12-23 | Cabin cover air tightness test clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113977499A CN113977499A (en) | 2022-01-28 |
| CN113977499B true CN113977499B (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111588084.1A Active CN113977499B (en) | 2021-12-23 | 2021-12-23 | Cabin cover air tightness test clamp |
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| Country | Link |
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| CN (1) | CN113977499B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893085B (en) * | 2022-04-15 | 2023-07-21 | 中国航空工业集团公司沈阳飞机设计研究所 | Airtight operating device of canopy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645053A (en) * | 2013-12-05 | 2014-03-19 | 湖北三江航天红峰控制有限公司 | Testing clamping apparatus for airtight bearing |
| CN103639940A (en) * | 2013-12-19 | 2014-03-19 | 吉林大学 | Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance |
| CN106706236A (en) * | 2016-12-28 | 2017-05-24 | 中国航空工业集团公司西安飞机设计研究所 | Cabin airtight tester |
| CN206248283U (en) * | 2016-12-16 | 2017-06-13 | 康文涛 | A kind of automobile ceramics clamp used for detecting air tightness |
| CN107702871A (en) * | 2017-09-30 | 2018-02-16 | 中国第汽车股份有限公司 | A kind of high pressure sealing detecting system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6523394B2 (en) * | 2001-04-18 | 2003-02-25 | The United States Of America As Represented By The Secretary Of The Navy | Leak test fixture |
-
2021
- 2021-12-23 CN CN202111588084.1A patent/CN113977499B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645053A (en) * | 2013-12-05 | 2014-03-19 | 湖北三江航天红峰控制有限公司 | Testing clamping apparatus for airtight bearing |
| CN103639940A (en) * | 2013-12-19 | 2014-03-19 | 吉林大学 | Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance |
| CN206248283U (en) * | 2016-12-16 | 2017-06-13 | 康文涛 | A kind of automobile ceramics clamp used for detecting air tightness |
| CN106706236A (en) * | 2016-12-28 | 2017-05-24 | 中国航空工业集团公司西安飞机设计研究所 | Cabin airtight tester |
| CN107702871A (en) * | 2017-09-30 | 2018-02-16 | 中国第汽车股份有限公司 | A kind of high pressure sealing detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113977499A (en) | 2022-01-28 |
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Address after: 110000 No.23, Hongbin Road, Yuhong District, Shenyang City, Liaoning Province Patentee after: Liaoning Huatian Aviation Technology Co.,Ltd. Address before: 110000 No.23, Hongbin Road, Yuhong District, Shenyang City, Liaoning Province Patentee before: SHENZHEN HUATIAN AVIATION MACHINERY CO.,LTD. |
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