CN113483971A - Metal plate weld joint detection device and detection method - Google Patents
Metal plate weld joint detection device and detection method Download PDFInfo
- Publication number
- CN113483971A CN113483971A CN202110901197.6A CN202110901197A CN113483971A CN 113483971 A CN113483971 A CN 113483971A CN 202110901197 A CN202110901197 A CN 202110901197A CN 113483971 A CN113483971 A CN 113483971A
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- China
- Prior art keywords
- metal plate
- sealing gasket
- air
- sliding block
- pressure
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- 239000002184 metal Substances 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 40
- 210000000078 claw Anatomy 0.000 claims description 38
- 238000003466 welding Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000004021 metal welding Methods 0.000 claims 1
- 241000282472 Canis lupus familiaris Species 0.000 abstract 6
- 230000000630 rising effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Images
Classifications
-
- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2884—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for welds
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a metal plate weld joint detection device and a detection method, and the detection device comprises a sliding block, a pressing plate, a sealing gasket and a downward pressing driving mechanism for driving the pressing plate to descend, wherein two ends of the sliding block are respectively connected with two connecting rods; the slider be equipped with connecting rod assorted slide opening so that the slider along the direction of connecting rod slides, the connecting rod be equipped with stationary dog assorted spout so that two stationary dogs are close to each other or keep away from, the upper end of stationary dog is equipped with spacing lug, the lower extreme of stationary dog passes the spout, the stationary dog cover has the nut in order to fix the stationary dog. The invention ensures that the sealing gasket is completely jointed with the metal plate and improves the detection accuracy.
Description
Technical Field
The invention belongs to the technical field of metal detection, and particularly relates to a metal plate weld joint detection device.
Background
Weld leakage is one of the problems often encountered in engineering, and leakage may exist in all systems or parts involving liquid (or gas), such as vacuum systems, pneumatic systems, hydraulic systems, and the like. Certain air tightness requirements are put on the systems or parts in engineering, and strict air tightness inspection is carried out.
The air tightness detection is also called leakage detection, and the air tightness performance of a sealing part is one of important factors influencing the quality of products. The air tightness detection is a necessary inspection item in the production process of many important parts and assemblies, such as cylinder bodies, cylinder covers, engine assemblies, refrigeration systems and the like. The existing air tightness detection device is complex in structure and large in size, and the air inflation detection device cannot be completely attached to a welding line of a part to be detected, so that horizontal side leakage can occur, and the detection accuracy is affected.
Disclosure of Invention
The invention mainly solves the technical problem of providing a metal plate weld joint detection device and a detection method, which ensure that a sealing gasket is completely attached to a metal plate and improve the detection accuracy.
In order to solve the technical problems, the invention adopts a technical scheme that: a metal plate welding seam detection device comprises a sliding block, a pressing plate, a sealing gasket and a downward pressing driving mechanism for driving the pressing plate to descend, wherein two ends of the sliding block are respectively connected with two connecting rods, two ends of each connecting rod are provided with fixing claws, the sliding block is connected with a plurality of elastic positioning rods, the elastic positioning rods are connected with the pressing plate, the sealing gasket is fixed on the lower surface of the pressing plate, and the sealing gasket is positioned above a welding seam of the metal plate;
the sliding block is provided with a sliding hole matched with the connecting rod so that the sliding block can slide along the direction of the connecting rod, the connecting rod is provided with a sliding groove matched with the fixed claws so that the two fixed claws can be close to or far away from each other, the upper ends of the fixed claws are provided with limiting convex blocks, the lower ends of the fixed claws penetrate through the sliding groove, and the fixed claws are sleeved with nuts so as to fix the fixed claws;
the lower surface of the sealing gasket protrudes downwards in the circumferential direction to form a sealing convex ring, the sealing gasket and the metal plate form a cavity together, the cavity is communicated with an air pipe, and the air pipe is communicated with an air pump.
Further, the pressing driving mechanism comprises a screw rod and a handle, the screw rod is in threaded connection with the sliding block, and the upper end of the screw rod is connected with the handle.
Furthermore, the elastic positioning rod comprises an inner positioning rod, an outer positioning tube and a positioning spring, the outer positioning tube is connected with the sliding block, the inner positioning rod is connected with the pressing plate, the outer positioning tube is sleeved on the inner positioning rod, and the positioning spring is arranged between the outer positioning tube and the inner positioning rod.
Furthermore, an air gauge and an electromagnetic valve are arranged on the air pipe, and the electromagnetic valve is located between the air gauge and the air pump.
Further, the sealing gasket is a rubber gasket.
Further, the stationary dog includes spliced pole and chuck, the chuck is fixed in the lower extreme of spliced pole, nut threaded connection in the spliced pole.
Further, the lower end of the screw rod is connected with the pressing block.
Furthermore, the sealing gasket and the sealing convex ring are integrally formed.
The detection method of the metal plate welding seam detection device comprises the following steps: the method comprises the following steps:
the method comprises the following steps: cleaning dirt on the surface of a welding seam of the metal plate, pressing the sealing gasket on the welding seam of the metal plate to be detected, adjusting the distance between the fixing claws at the two ends of each connecting rod to enable the fixing claws to tightly abut against the metal plate, and rotating the threads to fix the fixing claws;
step two: connecting the sealing washer with an air pipe, and connecting the air pipe with an air pump;
step three: the handle is rotated, and the screw rod rotates to drive the pressing block to press and compress the sealing gasket;
step four: the air pump is used for pumping air into the cavity, the electromagnetic valve is closed, the pressure of the pressure gauge is observed to be changed, if the pressure of the pressure gauge is not changed, the air tightness of the welding line of the metal plate is qualified, and if the pressure of the pressure gauge is gradually reduced, the air tightness of the welding line of the metal plate is unqualified.
Further, in the fourth step, air is slowly pumped into the cavity, pressure rising is stopped when the air pressure reaches 0.9-1.2Mpa, pressure stabilization is carried out for 15min, then pressure rising is continued to 1.8-2.4Mpa, pressure stabilization is carried out for 15min, and finally pressure rising is carried out to 3-4Mpa, and the pressure maintaining time is 60-120 min.
The invention has the following beneficial effects:
the device comprises a sliding block, a pressing plate, a sealing gasket and a pressing driving mechanism for driving the pressing plate to descend, wherein two ends of the sliding block are respectively connected with two connecting rods, two ends of each connecting rod are provided with a fixed claw, the sliding block is connected with a plurality of elastic locating rods, the elastic locating rods are connected with the pressing plate, the sealing gasket is fixed on the lower surface of the pressing plate, the sealing gasket is pressed by the elastic locating rods to be located, then the fixed claws are fixed on a metal plate to be detected, and finally the sealing gasket is pressed by the pressing driving mechanism, so that the sealing gasket is completely attached to the metal plate, and the detection accuracy is improved;
the sliding block is provided with the sliding hole matched with the connecting rod so that the sliding block can slide along the direction of the connecting rod, and the detected position is convenient to adjust;
the connecting rod is provided with the sliding groove matched with the fixed claws so that the two fixed claws are close to or far away from each other, the upper ends of the fixed claws are provided with the limiting convex blocks, the lower ends of the fixed claws penetrate through the sliding groove, and the fixed claws are sleeved with the nuts, so that the fixed claws are fixed on metal plates with different sizes, and welding seams of the metal plates are detected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the cavity and trachea of the present invention;
the parts in the drawings are marked as follows:
the device comprises a sliding block 1, a sliding hole 11, a pressing plate 2, a sealing gasket 3, a sealing convex ring 31, a cavity 32, a connecting rod 4, a sliding groove 41, a limiting bump 51, a nut 52, a connecting column 53, a chuck 54, a positioning inner rod 61, a positioning outer tube 62, a metal plate 7, an air tube 8, an air pump 81, an air pressure gauge 82, an electromagnetic valve 83, a screw rod 91, a handle 92 and a pressing block 93.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Example (b): a metal plate welding seam detection device is shown in figure 1-2 and comprises a sliding block 1, a pressing plate 2, a sealing gasket 3 and a downward pressing driving mechanism for driving the pressing plate 2 to descend, wherein two ends of the sliding block 1 are respectively connected with two connecting rods 4, two ends of each connecting rod 4 are provided with a fixed claw, the sliding block 1 is connected with a plurality of elastic positioning rods, the elastic positioning rods are connected with the pressing plate 2, the sealing gasket is fixed on the lower surface of the pressing plate 2 and is positioned above a welding seam of a metal plate 7;
the sliding block 1 is provided with a sliding hole 11 matched with the connecting rod 4 so that the sliding block 1 can slide along the direction of the connecting rod 4, the connecting rod 4 is provided with a sliding groove 41 matched with the fixed claws so that the two fixed claws can approach or separate from each other, the upper ends of the fixed claws are provided with limiting convex blocks 51, the lower ends of the fixed claws penetrate through the sliding groove 41, and the fixed claws are sleeved with nuts 52 so as to fix the fixed claws;
the lower surface of the sealing gasket protrudes downwards in the circumferential direction to form a sealing convex ring 31, the sealing gasket and the metal plate 7 form a cavity 32 together, the cavity 32 is communicated with the air pipe 8, and the air pipe 8 is communicated with the air pump 81.
The downward pressing driving mechanism comprises a screw rod 91 and a handle 92, the screw rod 91 is in threaded connection with the sliding block 1, and the upper end of the screw rod 91 is connected with the handle 92.
The elastic positioning rod comprises an inner positioning rod 61, an outer positioning tube 62 and a positioning spring, the outer positioning tube 62 is connected with the sliding block 1, the inner positioning rod 61 is connected with the pressing plate 2, the outer positioning tube 62 is sleeved on the inner positioning rod 61, and the positioning spring is arranged between the outer positioning tube 62 and the inner positioning rod 61.
An air pressure gauge 82 and an electromagnetic valve 83 are arranged on the air pipe 8, and the electromagnetic valve 83 is located between the air pressure gauge 82 and the air pump 81.
The sealing gasket 3 is a rubber gasket.
The fixing jaw comprises a connecting column 53 and a chuck 54, the chuck 54 is fixed at the lower end of the connecting column 53, and the nut 52 is in threaded connection with the connecting column 53.
The lower end of the screw 91 is connected with a pressing block 93.
The sealing gasket 3 and the sealing convex ring 31 are integrally formed.
The detection method of the metal plate welding seam detection device comprises the following steps: the method comprises the following steps:
the method comprises the following steps: cleaning dirt on the surface of a welding seam of the metal plate, pressing the sealing gasket on the welding seam of the metal plate to be detected, adjusting the distance between the fixing claws at the two ends of each connecting rod to enable the fixing claws to tightly abut against the metal plate, and rotating the threads to fix the fixing claws;
step two: connecting the sealing washer with an air pipe, and connecting the air pipe with an air pump;
step three: the handle is rotated, and the screw rod rotates to drive the pressing block to press and compress the sealing gasket;
step four: the air pump is used for pumping air into the cavity, the electromagnetic valve is closed, the pressure of the pressure gauge is observed to be changed, if the pressure of the pressure gauge is not changed, the air tightness of the welding line of the metal plate is qualified, and if the pressure of the pressure gauge is gradually reduced, the air tightness of the welding line of the metal plate is unqualified.
And in the fourth step, air is slowly pumped into the cavity, pressure is stopped to be boosted for 15min when the air pressure reaches 0.9-1.2Mpa, then the pressure is continuously boosted to 1.8-2.4Mpa for 15min, and finally the pressure is boosted to 3-4Mpa, and the pressure maintaining time is 60-120 min.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a sheet metal welding seam detection device which characterized in that: the device comprises a sliding block (1), a pressing plate (2), a sealing gasket (3) and a downward pressing driving mechanism for driving the pressing plate to descend, wherein two ends of the sliding block are respectively connected with two connecting rods (4), two ends of each connecting rod are provided with fixing claws, the sliding block is connected with a plurality of elastic positioning rods, the elastic positioning rods are connected with the pressing plate, the sealing gasket is fixed on the lower surface of the pressing plate, and the sealing gasket is positioned above a welding line of a metal plate (7);
the sliding block is provided with a sliding hole (11) matched with the connecting rod so that the sliding block can slide along the direction of the connecting rod, the connecting rod is provided with a sliding groove (41) matched with the fixed claws so that the two fixed claws can be close to or far away from each other, the upper ends of the fixed claws are provided with limiting convex blocks (51), the lower ends of the fixed claws penetrate through the sliding groove, and the fixed claws are sleeved with nuts (52) so as to fix the fixed claws;
the lower surface of the sealing gasket protrudes downwards in the circumferential direction to form a sealing convex ring (31), the sealing convex ring, the sealing gasket and the metal plate form a cavity (32) together, the cavity is communicated with an air pipe (8), and the air pipe is communicated with an air pump (81).
2. The sheet metal weld detecting apparatus according to claim 1, wherein: the pressing-down driving mechanism comprises a screw rod (91) and a handle (92), the screw rod is in threaded connection with the sliding block, and the upper end of the screw rod is connected with the handle.
3. The sheet metal weld detecting apparatus according to claim 1, wherein: the elastic positioning rod comprises an inner positioning rod (61), an outer positioning tube (62) and a positioning spring, the outer positioning tube is connected with the sliding block, the inner positioning rod is connected with the pressing plate, the outer positioning tube is sleeved on the inner positioning rod, and the positioning spring is arranged between the outer positioning tube and the inner positioning rod.
4. The sheet metal weld detecting apparatus according to claim 1, wherein: an air pressure gauge (82) and an electromagnetic valve (83) are arranged on the air pipe, and the electromagnetic valve is located between the air pressure gauge and the air pump.
5. The sheet metal weld detecting apparatus according to claim 1, wherein: the sealing gasket is a rubber gasket.
6. The sheet metal weld detecting apparatus according to claim 1, wherein: the fixed jaw comprises a connecting column (53) and a chuck (54), the chuck is fixed at the lower end of the connecting column, and the nut is in threaded connection with the connecting column.
7. The sheet metal weld detecting apparatus according to claim 2, wherein: the lower end of the screw rod is connected with a pressing block (93).
8. The sheet metal weld detecting apparatus according to claim 1, wherein: the sealing gasket and the sealing convex ring are an integrated piece.
9. A method of inspecting a metal plate weld inspection apparatus according to any one of claims 1 to 8: the method is characterized in that: the method comprises the following steps:
the method comprises the following steps: cleaning dirt on the surface of a welding seam of the metal plate, pressing the sealing gasket on the welding seam of the metal plate to be detected, adjusting the distance between the fixing claws at the two ends of each connecting rod to enable the fixing claws to tightly abut against the metal plate, and rotating the threads to fix the fixing claws;
step two: connecting the sealing washer with an air pipe, and connecting the air pipe with an air pump;
step three: the handle is rotated, and the screw rod rotates to drive the pressing block to press and compress the sealing gasket;
step four: the air pump is used for pumping air into the cavity, the electromagnetic valve is closed, the pressure of the pressure gauge is observed to be changed, if the pressure of the pressure gauge is not changed, the air tightness of the welding line of the metal plate is qualified, and if the pressure of the pressure gauge is gradually reduced, the air tightness of the welding line of the metal plate is unqualified.
10. The detection method of the metal plate weld detecting apparatus according to claim 9, characterized in that: and in the fourth step, air is slowly pumped into the cavity, pressure is stopped to be boosted for 15min when the air pressure reaches 0.9-1.2Mpa, then the pressure is continuously boosted to 1.8-2.4Mpa for 15min, and finally the pressure is boosted to 3-4Mpa, and the pressure maintaining time is 60-120 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901197.6A CN113483971A (en) | 2021-08-06 | 2021-08-06 | Metal plate weld joint detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901197.6A CN113483971A (en) | 2021-08-06 | 2021-08-06 | Metal plate weld joint detection device and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113483971A true CN113483971A (en) | 2021-10-08 |
Family
ID=77945840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110901197.6A Withdrawn CN113483971A (en) | 2021-08-06 | 2021-08-06 | Metal plate weld joint detection device and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113483971A (en) |
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2021
- 2021-08-06 CN CN202110901197.6A patent/CN113483971A/en not_active Withdrawn
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Application publication date: 20211008 |