CN219977702U - Clamp for airtight detection of electric drive main speed reducer shell - Google Patents
Clamp for airtight detection of electric drive main speed reducer shell Download PDFInfo
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- CN219977702U CN219977702U CN202321303206.2U CN202321303206U CN219977702U CN 219977702 U CN219977702 U CN 219977702U CN 202321303206 U CN202321303206 U CN 202321303206U CN 219977702 U CN219977702 U CN 219977702U
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a clamp for airtight detection of an electric drive main reducer shell, which comprises an upper tooling plugging structure and a lower tooling plugging structure, wherein the upper tooling plugging structure comprises an upper plugging substrate, a side plugging clamping plate and a back plugging clamping plate are arranged on the upper plugging substrate, air cylinders are arranged on the side plugging clamping plate and the back plugging clamping plate, a plurality of sleeves are uniformly distributed at the central position of the upper plugging substrate, one end of a compression rod is movably arranged in each sleeve, a spring is connected between each sleeve and each compression rod, the lower tooling plugging structure comprises a lower plugging substrate, a sealing cylinder is arranged on the lower plugging substrate, an air inlet pipe is arranged on the sealing cylinder, and an air pressure sensor is arranged in each sealing cylinder. Through designing airtight detection anchor clamps, combine differential pressure leak detector to realize equipment and independently judge the gas tightness, stop the influence of human factor.
Description
Technical Field
The utility model relates to the technical field of automobile speed reducer equipment, in particular to a clamp for airtight detection of an electric drive main speed reducer shell.
Background
The main speed reducer is an indispensable important device on an automobile, and a mechanism capable of changing torque and rotating speed in a drive axle is basically used for increasing torque from a speed changer or a universal transmission device, reducing rotating speed and changing the transmission direction of the torque, and is composed of one or more pairs of speed reducing gear pairs, power is input by a driving gear and output through a driven gear.
The electric drive main speed reducer shell is one of important components of power transmission of a new energy automobile, and has high requirements on air tightness and corrosion resistance because of a severe working environment. However, usually, soap water is manually smeared on the air tightness of the main reducer, after air with certain air pressure is filled, whether air bubbles exist on the surface is observed to judge whether air leakage exists, and because the manual operation is accompanied by a plurality of uncertain factors, the oil leakage fault is frequently fed back to the main reducer shell in the after-market of new energy automobiles.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the clamp for detecting the air tightness of the shell of the electric drive main speed reducer, and the air tightness detection clamp is designed to be combined with the differential pressure leak detector, so that the air tightness can be automatically judged by equipment, and the influence of human factors is avoided.
The technical scheme adopted for solving the technical problems is as follows:
a anchor clamps for airtight detection of main reducer shell is driven to electricity, including last frock block structure and lower frock block structure:
the upper tooling plugging structure comprises an upper plugging substrate, wherein the upper plugging substrate is provided with two side plugging clamping plates and two back plugging clamping plates, the side plugging clamping plates are symmetrically arranged, air cylinders are respectively arranged on the side plugging clamping plates and the back plugging clamping plates, a plurality of sleeves are uniformly distributed at the central position of the upper plugging substrate, one end of a pressure rod is movably arranged in each sleeve, the other end of the pressure rod penetrates through and extends out of each sleeve, and a spring is connected between each sleeve and each pressure rod;
the lower tooling plugging structure comprises a lower plugging substrate, a sealing cylinder is arranged on the lower plugging substrate, an air inlet pipe is arranged on the sealing cylinder, an air inlet hole is formed in the side wall of the sealing cylinder, the air inlet pipe is communicated with the air inlet hole, and an air pressure sensor is arranged in the sealing cylinder.
A plurality of guide rods are uniformly distributed on the plugging substrate, and guide sleeves corresponding to the guide rods are arranged on the lower plugging substrate.
An annular groove is formed in the upper end face of the sealing cylinder, and a sealing ring is installed in the annular groove.
The sealing cylinder is also provided with an exhaust hole, and a plug is connected in the exhaust hole.
And a filler is placed in the sealing cylinder.
The beneficial effects of the utility model are as follows:
1. the airtight detection process comprises 4 stages of inflation, pressure stabilization, measurement and exhaust. The inflation stage mainly comprises the steps of pressurizing the inside of the part, and applying air pressure to 0.35Mpa by inflating compressed air into the inner cavity of the sealing cylinder; and (3) a voltage stabilizing stage: the gas in the inner cavity tends to be stable, and the pressure is stabilized for more than 40S; measuring: the leakage pressure drop value T is obtained by comparing the leakage value detected by the air pressure sensor with a reference value, and if the value T exceeds a preset limit, the air pressure sensor is judged to be unqualified; and (3) an exhaust stage: after the detection is finished, the automatic exhaust is firstly carried out to prevent the air pressure from being too large, so that the parts fly out, and after the air pressure is reduced, the tool starts to return automatically. When the air tightness is detected, the air pressure of the sealing cylinder and the inner cavity of the shell is directly detected through the air pressure sensor, so that equipment and the shell of the speed reducer are prevented from being damaged due to excessive inflation, if the air pressure detected by the air pressure sensor is stabilized at about 0.35Mpa, the air tightness of the shell of the speed reducer is indicated to be good, and if the air pressure detected by the air pressure sensor is unchanged, the air leakage of the shell of the speed reducer is indicated to be high, and the detection efficiency is improved.
2. The sealing effect of the sealing cylinder and the speed reducer shell is enhanced through the sealing ring, so that gas leakage is prevented.
3. The filling material is used for reducing the detection volume of the product, replacing a gas space, reducing detection errors caused by gas instability, and also reducing the inflation time and improving the detection time; meanwhile, the shape of the inner cavity of the part is imitated, and the wrong assembly of the part can be effectively prevented.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
fig. 2 is a schematic perspective view of an upper tooling plugging structure;
FIG. 3 is a schematic cross-sectional view of an upper tooling plugging structure;
FIG. 4 is a top view of the lower tooling plugging structure;
FIG. 5 is a schematic front view of a lower tooling plugging structure;
FIG. 6 is a schematic cross-sectional view of a lower tooling plugging structure;
the figure shows: 1-mounting a tool plugging structure; 2-a lower tooling plugging structure; 10-upper plugging a substrate; 11-side plugging clamping plates; 12-back plugging clamping plates; 13-cylinder; 14-a sleeve; 15-a compression bar; 16-a spring; 17-a guide bar; 20-lower plugging the substrate; 21-sealing the cylinder; 22-an air inlet pipe; 23-a guide sleeve; 24-sealing rings; 25-filling; 26-an air inlet hole.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1 to 6, a fixture for airtight detection of an electrically driven main reducer shell comprises an upper tooling plugging structure 1 and a lower tooling plugging structure 2:
the upper tooling plugging structure 1 comprises an upper plugging substrate 10, wherein the upper plugging substrate 10 is provided with two side plugging clamping plates 11 and two back plugging clamping plates 12, the side plugging clamping plates 11 and the back plugging clamping plates 12 are symmetrically arranged, each side plugging clamping plate 11 and each back plugging clamping plate 12 are provided with an air cylinder 13, a plurality of sleeves 14 are uniformly distributed at the central position of the upper plugging substrate 10, one end of a pressing rod 15 is movably arranged in each sleeve 14, the other end of each pressing rod 15 penetrates through and extends out of each sleeve 14, and a spring 16 is connected between each sleeve 14 and each pressing rod 15;
the lower tooling plugging structure 2 comprises a lower plugging base plate 20, a sealing cylinder 21 is arranged on the lower plugging base plate 20, an air inlet pipe 22 is arranged on the sealing cylinder 21, an air inlet hole 26 is arranged on the side wall of the sealing cylinder 21, the air inlet pipe 22 is communicated with the air inlet hole 26, and an air pressure sensor is arranged in the sealing cylinder 21.
A plurality of guide rods 17 are uniformly distributed on the plugging substrate 10, and guide sleeves 23 corresponding to the guide rods 17 are arranged on the lower plugging substrate 20.
An annular groove is formed in the upper end face of the sealing cylinder 21, and a sealing ring 24 is installed in the annular groove.
The sealing cylinder 21 is also provided with an exhaust hole, and a plug is connected in the exhaust hole.
A filler is placed in the sealing cylinder 21.
The inner cavity of the sealing cylinder 21 is filled with compressed air, the pressure is stabilized for more than 40S after being applied to 0.35Mpa, the equipment obtains a leakage pressure drop value T by comparing the leakage value with a reference value according to the process, and if the value T exceeds a preset limit, the equipment is judged to be unqualified; when the air tightness is detected, the air pressure of the sealing cylinder 21 and the inner cavity of the shell is directly detected through the air pressure sensor, so that the equipment and the shell of the speed reducer are prevented from being damaged due to excessive inflation, if the air pressure detected by the air pressure sensor is stabilized at about 0.35Mpa, the air tightness of the shell of the speed reducer is good, and if the air pressure detected by the air pressure sensor is unchanged, the air leakage of the shell of the speed reducer is indicated, and the detection efficiency is improved.
The sealing effect of the sealing cylinder 21 and the speed reducer shell is enhanced by the sealing ring, so that gas leakage is prevented.
The filling material 25 is used for reducing the detection volume of the product, replacing a gas space, reducing detection errors caused by gas instability and also reducing the inflation time and improving the detection time; meanwhile, the shape of the inner cavity of the part is imitated, and the wrong assembly of the part can be effectively prevented.
After the detection is finished, the blocking is pulled out, and the gas in the sealing cylinder 21 is discharged through the exhaust hole, so that the pressure relief effect is realized.
The filler 25 is put into the sealing cylinder 21, the reducer shell is put on the sealing cylinder 21, the opening end of the reducer shell is aligned with the opening of the upper end of the sealing cylinder 21, the lower tooling plugging structure 2 is moved upwards, the pressing rod 15 contacts the upper end face of the reducer shell and then moves upwards, under the action of the restoring force of the spring 16, the pressing rod 15 presses and compresses the reducer shell downwards until the guide rod 17 is sleeved into the guide sleeve 23 and stops, the side plugging clamping plate 11 and the cylinder 13 on the back plugging clamping plate 12 start to work, the movable end of the cylinder 13 stretches to apply pressure on the corresponding side face of the reducer shell, and stops after a certain pressure, so as to play a role of compressing and fixing the side face of the reducer shell, meanwhile, various holes are formed on the side wall of the reducer shell, the air leakage of the tiny air holes caused by the casting defects is required to be sealed, a sealing plate is arranged at the movable end of the air cylinder 13, the sealing plate plays a role in sealing the tiny air holes, the tiny air holes are prevented from being leaked, the appearance of the sealing plate corresponds to that of a reducer shell, compressed air is filled into the reducer shell at the upper end of the sealing cylinder 21 through an air inlet pipe 22 and an air inlet hole 26, the pressure is applied to more than 40S after 0.35Mpa, the leakage pressure drop value T is obtained by comparing the leakage value with a reference value in the process of the air charging equipment, whether the T value exceeds a preset limit is judged, whether a part to be tested is qualified is judged, and prompt is carried out through a warning lamp, sound and other modes.
The manufacturer of the cylinder 13 is: the Adand enterprise group has the model number: 6061-T6.
The manufacturer of the air pressure sensor is as follows: the model number of Hangzhou Mi Ke sensing technology limited is: RS485.
The above description is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (5)
1. A clamp for airtight detection of electric drive main reducer shell, including last frock block structure (1) and lower frock block structure (2), its characterized in that:
the upper tooling plugging structure (1) comprises an upper plugging substrate (10), a side plugging clamping plate (11) and a back plugging clamping plate (12) are arranged on the upper plugging substrate (10), the number of the side plugging clamping plates (11) is two, the side plugging clamping plates and the back plugging clamping plates (12) are symmetrically arranged, air cylinders (13) are respectively arranged on the side plugging clamping plates (11) and the back plugging clamping plates (12), a plurality of sleeves (14) are uniformly distributed at the central position of the upper plugging substrate (10), one end of a pressing rod (15) is movably arranged in each sleeve (14), the other end of each pressing rod (15) penetrates through and stretches out of each sleeve (14), and springs (16) are connected between the sleeves (14) and the pressing rods (15);
the lower tooling plugging structure (2) comprises a lower plugging substrate (20), a sealing cylinder (21) is arranged on the lower plugging substrate (20), an air inlet pipe (22) is arranged on the sealing cylinder (21), an air inlet hole (26) is formed in the side wall of the sealing cylinder (21), the air inlet pipe (22) is communicated with the air inlet hole (26), and an air pressure sensor is arranged in the sealing cylinder (21).
2. A fixture for airtight detection of an electrically driven final drive housing as set forth in claim 1, wherein; a plurality of guide rods (17) are uniformly distributed on the plugging substrate (10), and guide sleeves (23) corresponding to the guide rods (17) are arranged on the lower plugging substrate (20).
3. A fixture for airtight detection of an electrically driven final drive housing as set forth in claim 1, wherein; an annular groove is formed in the upper end face of the sealing cylinder (21), and a sealing ring (24) is arranged in the annular groove.
4. A fixture for airtight detection of an electrically driven final drive housing as set forth in claim 1, wherein; the sealing cylinder (21) is also provided with an exhaust hole, and a plug is connected in the exhaust hole.
5. A fixture for airtight detection of an electrically driven final drive housing as set forth in claim 1, wherein; and a filler is placed in the sealing cylinder (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321303206.2U CN219977702U (en) | 2023-05-26 | 2023-05-26 | Clamp for airtight detection of electric drive main speed reducer shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321303206.2U CN219977702U (en) | 2023-05-26 | 2023-05-26 | Clamp for airtight detection of electric drive main speed reducer shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219977702U true CN219977702U (en) | 2023-11-07 |
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ID=88598269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321303206.2U Active CN219977702U (en) | 2023-05-26 | 2023-05-26 | Clamp for airtight detection of electric drive main speed reducer shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219977702U (en) |
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2023
- 2023-05-26 CN CN202321303206.2U patent/CN219977702U/en active Active
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