CN220960484U - Jig for detecting air tightness of gear shell - Google Patents
Jig for detecting air tightness of gear shell Download PDFInfo
- Publication number
- CN220960484U CN220960484U CN202322500164.8U CN202322500164U CN220960484U CN 220960484 U CN220960484 U CN 220960484U CN 202322500164 U CN202322500164 U CN 202322500164U CN 220960484 U CN220960484 U CN 220960484U
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- gear
- workbench
- sealing
- plate
- jig
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- 238000007789 sealing Methods 0.000 claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to the technical field of detection tools, in particular to a jig for detecting the air tightness of a gear shell, which comprises a workbench, wherein the workbench is provided with at least two parallel racks, the racks are connected with a sliding plate for placing the gear shell in a sliding way through a sliding block, the sliding plate is provided with at least two positioning pins for positioning the gear shell, and the workbench is provided with a rodless cylinder for driving the sliding plate to move; the workbench is vertically provided with four upright posts, the four upright posts are connected with lifting plates in a sliding manner, the lifting plates are provided with sealing devices capable of sealing gear shells, the top of each upright post is fixedly provided with a top plate, and the top plates are provided with lifting cylinders capable of driving the lifting plates to move up and down; and an air adding nozzle for injecting air into the gear housing cavity is also arranged. The utility model can quickly replace the gear shell and efficiently and accurately detect the air tightness, thereby improving the production efficiency.
Description
Technical Field
The utility model relates to the technical field of detection tools, in particular to a jig for detecting the air tightness of a gear shell.
Background
Because the gearbox needs to prevent the leakage of internal lubricating oil, a sealing test needs to be carried out, and common sealing tests include a water tightness test and an air tightness test; in order to ensure production efficiency, in production, an airtight test is mostly adopted. Gearboxes are typically fabricated from multiple cast housings, each of which requires a gas tightness test because casting may create casting defects. Therefore, a corresponding gauge is required to ensure that the gear shell air tightness test is well carried out, and the speed and the efficiency are high.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide a jig for detecting the air tightness of a gear shell, which adopts a workbench with a push-pull bearing plate and a sealing mechanism which is arranged above the workbench and can be pressed down, so that the gear shell can be quickly replaced, positioned and sealed, and the air tightness of the gear shell can be quickly detected after pressurized air is filled.
The technical scheme adopted for solving the technical problems is as follows: the jig for detecting the air tightness of the gear shell comprises a workbench, wherein the workbench is provided with at least two parallel racks, the racks are connected with a sliding plate for placing the gear shell in a sliding manner through a sliding block, the sliding plate is provided with at least two positioning pins for positioning the gear shell, and the workbench is provided with a rodless cylinder for driving the sliding plate to move; the workbench is vertically provided with four upright posts, the four upright posts are connected with lifting plates in a sliding manner, the lifting plates are provided with sealing devices capable of sealing gear shells, the top of each upright post is fixedly provided with a top plate, and the top plates are provided with lifting cylinders capable of driving the lifting plates to move up and down; and an air adding nozzle for injecting air into the gear housing cavity is also arranged.
Preferably, the workbench provided with one end of the upright post is provided with a limit screw for positioning the sliding plate, and the other end of the workbench is provided with a stop plate for preventing the sliding plate from derailing.
Preferably, the workbench is provided with buffer rods at two ends of the rodless cylinder.
Preferably, a sealing gasket is arranged between the sliding plate and the gear shell.
Preferably, the sealing device comprises a sleeve fixed on the lifting plate, the sleeve is connected with a telescopic rod in a sliding mode, a sealing plate is arranged at the bottom end of the telescopic rod, springs with two ends abutting against the sleeve and the sealing plate are sleeved on the telescopic rod, and a sealing gasket is arranged on the bottom surface of the sealing plate.
Preferably, the positioning pin is a cylinder, and the section of the sealing plate is a circle or other shapes which are matched with the hole sites of the gear shell.
Preferably, the locating pin is in clearance fit with the gear housing.
Preferably, the sealing plate has a size larger than the hole to be sealed of the gear housing.
Preferably, the air filling nozzle comprises a middle through threaded pipe which is fixed on the gear shell through a nut and can be directly communicated with the inner cavity of the gear shell, a flange is arranged at the bottom end of the middle through threaded pipe, and sealing rings are respectively sleeved between the nut and the outer wall of the gear shell and between the flange and the inner wall of the gear shell.
The beneficial effects of the utility model are as follows: the jig for detecting the air tightness of the gear shell comprises a workbench, wherein the workbench is provided with at least two parallel racks, the racks are connected with a sliding plate for placing the gear shell in a sliding manner through a sliding block, the sliding plate is provided with at least two positioning pins for positioning the gear shell, and the workbench is provided with a rodless cylinder for driving the sliding plate to move; the workbench is vertically provided with four upright posts, the four upright posts are connected with lifting plates in a sliding manner, the lifting plates are provided with sealing devices capable of sealing gear shells, the top of each upright post is fixedly provided with a top plate, and the top plates are provided with lifting cylinders capable of driving the lifting plates to move up and down; and an air adding nozzle for injecting air into the gear housing cavity is also arranged. The utility model can quickly replace the gear shell and efficiently and accurately detect the air tightness, thereby improving the production efficiency.
Drawings
FIG. 1 is a perspective view of a gear housing embodying an embodiment;
FIG. 2 is a perspective view of a jig for gear case tightness detection of the present utility model;
FIG. 3 is a front view of the fixture for gear case tightness detection of the present utility model;
FIG. 4 is a top view of the face A of FIG. 3 facing downward;
FIG. 5 is a top view of the B-side of FIG. 3 facing downward;
FIG. 6 is a schematic view of the structure of the air faucet;
fig. 7 is a perspective view of the slide plate provided with the positioning pin.
Reference numerals illustrate:
1-workbench, 2-rack, 3-slider, 4-slide plate, 5-locating pin, 6-rodless cylinder, 7-column, 8-lifting plate, 9-sealing device, 910-sleeve, 920-telescopic rod, 930-sealing plate, 940-spring, 950-sealing pad, 10-top plate, 11-lifting cylinder, 12-air nozzle, 1210-middle threaded tube, 1211-flange, 1220-nut, 1230-sealing ring, 13-limit screw, 14-stop plate, 15-buffer rod.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the utility model.
The jig for detecting the air tightness of the gear shell is mainly used for detecting the air tightness of a cast aluminum alloy gear shell (shown in fig. 1), the adopted implementation mode is shown in fig. 2-7, and the jig for detecting the air tightness of the gear shell comprises a workbench 1, wherein the workbench 1 is provided with at least two parallel racks 2, the racks 2 are connected with a sliding plate 4 for placing the gear shell in a sliding manner through a sliding block 3, the sliding plate 4 is provided with at least two positioning pins 5 for positioning the gear shell, and the workbench 1 is provided with a rodless cylinder 6 for driving the sliding plate 4 to move; the workbench 1 is vertically provided with four upright posts 7, the four upright posts 7 are connected with lifting plates 8 in a sliding manner, the lifting plates 8 are provided with a plurality of sealing devices 9 capable of sealing gear shells, the top of each upright post 7 is fixedly provided with a top plate 10, and the top plates 10 are provided with lifting cylinders 11 capable of driving the lifting plates 8 to move up and down; an air-entraining nozzle 12 is also provided for injecting air into the gear housing cavity.
In operation, the air-filling nozzle 12 is first mounted on the gear housing, the gear housing in this embodiment has a taper hole communicating with the inner cavity from the bottom thereof, and for sealing, convenient for mounting and air filling, the air-filling nozzle 12 includes a hollow threaded tube 1210 fixed on the gear housing by a nut 1220 and capable of being directly connected to the inner cavity thereof, a flange 1211 is disposed at the bottom end of the hollow threaded tube 1210, and sealing rings 1230 are respectively sleeved on the hollow threaded tube 1210 between the nut 1220 and the outer wall of the gear housing and between the flange 1211 and the inner wall of the gear housing.
Then, a ring of sealing pad 950 is stuck on the upper surface of the sliding plate 4 along the outer edge of the gear shell to be detected, the gear shell is reversely buckled on the sliding plate 4, and the three positioning pins 5 are used for positioning, and at this time, the sealing pad 950 is positioned between the sliding plate 4 and the gear shell.
Thirdly, the rodless cylinder 6 drives the sliding plate 4 to be right below the sealing device 9, and in order to ensure accurate positioning, the workbench 1 is provided with a limit screw 13 at the end; in addition, the other end of the workbench 1 is provided with a stop plate 14 for preventing the sliding plate 4 from derailing; meanwhile, the workbench 1 is provided with buffer rods 15 at two ends of the rodless cylinder 6, so that the sliding plate 4 can be timely decelerated when moving to the two ends.
Fourth, the lifting plate 8 descends, so that the sealing device 9 covers the hole with the gear casing upward and communicated with the inner cavity, in order to prevent the gear casing from being crushed and ensure good sealing, the sealing device 9 comprises a sleeve 910 fixed on the lifting plate 8, the sleeve 910 is slidably connected with a telescopic rod 920, the bottom end of the telescopic rod 920 is provided with a sealing plate 930, the telescopic rod 920 is sleeved with a spring 940 with two ends abutting against the sleeve 910 and the sealing plate 930, and the bottom surface of the sealing plate 930 is provided with a sealing pad 950; the outer edge of the sealing plate 930 exceeds the hole to be sealed of the gear shell, namely the sealing plate 930 is attached to the surface of the gear shell through the sealing gasket 950; the sealing device 9 has a certain downward pressure, and can prevent air leakage at the sealing position after high-pressure air is filled into the inner cavity of the gear shell while sealing is ensured.
Fifthly, connecting an air pipe with an air pressure meter on the air charging nozzle 12, inflating the inner cavity of the gear housing, pressurizing to a certain pressure, closing the air charging valve, keeping for a certain time, and observing whether the value of the air pressure meter is reduced; if the gear is lowered, the gear shell leaks air, and if the numerical value is unchanged, the gear shell has good air tightness.
Sixth, after the air tightness detection is completed, the air pressure is released, the air pipe is taken down, the sealing device 9 is lifted off the gear shell, the sliding plate 4 slides to the other end of the workbench 1 far away from the sealing device 9, and the gear shell is taken down.
Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the present utility model, and the front, rear, left, right, upper, middle, lower, etc. directions adopted for the description of the technical solution are set based on the drawings, not limiting the scope of the present utility model, although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (9)
1. A tool for gear shell gas tightness detects, its characterized in that: the automatic feeding device comprises a workbench, wherein the workbench is provided with at least two parallel racks, the racks are connected with a sliding plate for placing a gear shell in a sliding manner through a sliding block, the sliding plate is provided with at least two positioning pins for positioning the gear shell, and the workbench is provided with a rodless cylinder for driving the sliding plate to move; the workbench is vertically provided with four upright posts, the four upright posts are connected with lifting plates in a sliding manner, the lifting plates are provided with sealing devices capable of sealing gear shells, the top of each upright post is fixedly provided with a top plate, and the top plates are provided with lifting cylinders capable of driving the lifting plates to move up and down; and an air adding nozzle for injecting air into the gear housing cavity is also arranged.
2. The jig for gear case air tightness detection according to claim 1, wherein: the workbench provided with one end of the upright post is provided with a limit screw for positioning the sliding plate, and the other end of the workbench is provided with a stop plate for preventing the sliding plate from derailing.
3. The jig for gear case air tightness detection according to claim 1, wherein: the workbench is provided with buffer rods at two ends of the rodless cylinder.
4. The jig for gear case air tightness detection according to claim 1, wherein: a sealing gasket is arranged between the sliding plate and the gear shell.
5. The jig for gear case air tightness detection according to claim 1, wherein: the sealing device comprises a sleeve fixed on the lifting plate, the sleeve is connected with a telescopic rod in a sliding mode, a sealing plate is arranged at the bottom end of the telescopic rod, springs with two ends abutting against the sleeve and the sealing plate are sleeved on the telescopic rod, and a sealing gasket is arranged on the bottom surface of the sealing plate.
6. The jig for gear case air tightness detection according to claim 5, wherein: the locating pin is a cylinder, and the section of the sealing plate is round or is matched with the shape of the hole site of the gear shell.
7. The jig for gear case air tightness detection according to claim 1, wherein: the locating pin is in clearance fit with the gear housing.
8. The jig for gear case air tightness detection according to claim 5, wherein: the sealing plate has a size larger than the hole to be sealed of the gear housing.
9. The jig for gear case air tightness detection according to claim 1, wherein: the air filling nozzle comprises a middle through threaded pipe which is fixed on the gear shell through a nut and can be directly communicated with the inner cavity of the gear shell, a flange is arranged at the bottom end of the middle through threaded pipe, and sealing rings are respectively sleeved between the nut and the outer wall of the gear shell and between the flange and the inner wall of the gear shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322500164.8U CN220960484U (en) | 2023-09-14 | 2023-09-14 | Jig for detecting air tightness of gear shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322500164.8U CN220960484U (en) | 2023-09-14 | 2023-09-14 | Jig for detecting air tightness of gear shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220960484U true CN220960484U (en) | 2024-05-14 |
Family
ID=90980861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322500164.8U Active CN220960484U (en) | 2023-09-14 | 2023-09-14 | Jig for detecting air tightness of gear shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220960484U (en) |
-
2023
- 2023-09-14 CN CN202322500164.8U patent/CN220960484U/en active Active
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