CN108107288A - Vehicular Fault Diagnosis of Construction Machinery instrument - Google Patents
Vehicular Fault Diagnosis of Construction Machinery instrument Download PDFInfo
- Publication number
- CN108107288A CN108107288A CN201711146597.0A CN201711146597A CN108107288A CN 108107288 A CN108107288 A CN 108107288A CN 201711146597 A CN201711146597 A CN 201711146597A CN 108107288 A CN108107288 A CN 108107288A
- Authority
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- Prior art keywords
- lower casing
- connector
- fault diagnosis
- upper casing
- mainboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003745 diagnosis Methods 0.000 title claims abstract description 19
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 230000000712 assembly Effects 0.000 claims abstract description 30
- 238000000429 assembly Methods 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Casings For Electric Apparatus (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
Vehicular Fault Diagnosis of Construction Machinery instrument of the present invention, including housing and circuit board assemblies, the housing includes upper casing and lower casing；It is provided in lower casing for the mounting base of mounting circuit boards component, mounting base is equipped with connecting hole；The interior bottom of lower casing is additionally provided with first heating column identical with the height of mounting base；Be provided with the second heating column in the upper casing, the first heating column and the second heating column respectively with circuit board assemblies thermal contact conductance；The junction of upper casing and lower casing is equipped with the connector of cooperation, is equipped with data wire connector at connector, data wire connector is electrically connected with circuit board assemblies；The lower part of the lower casing is equipped with quakeproof bracket.Data in engineering machinery CAN bus imported into circuit board assemblies and analyze and process by the present invention, realize the analyzing and processing of failure；The configuration of the present invention is simple simultaneously, has the advantages that good heat dissipation effect, lightweight, is worthy to be popularized.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly to vehicular Fault Diagnosis of Construction Machinery instrument.
Background technology
With China's expanding economy, machinery manufacturing industry and the development of highway transportation industry are swift and violent, and mechanical equipment is controlled
The demand of technology and equipment is growing day by day, and the failure of mechanical equipment is particularly important, however corresponding fault detection technique is also
Corresponding fast development is not obtained.
At present, in entire industry for the failure of engineering machinery report an error Technical comparing weakness, due to engineering machinery building ring
Border is complicated, and equipment is various, where needing manually to be investigated the problem that finds in case of a failure one by one, therefore often
Reason cannot be found out in time, cause work efficiency low.Not only affect job schedule, can't be to being likely to occur the problem of into
Capable timely analysis and early warning has left security risk, it is seen that the negative effect thus brought is very big for subsequent work.
As the demand that entire industry reports an error to engineering machinery failure is more and more stronger, the urgency of the technical problem is solved
Also it is increasing.Since engineering machinery working environment is complicated, equipment is various, cannot often look in time in case of a failure
Go out reason；Faulty equipment can be quickly navigated to by real-time data acquisition, can also count equipment service condition.
The content of the invention
In order to solve the above technical problems, the invention discloses vehicular Fault Diagnosis of Construction Machinery instrument, it is intended to pass through note
Various data in record and work machine CAN bus, analyze and process the operating condition of engineering machinery, are transported in work
Early warning is carried out to work hidden danger in row, instruction can be made to specific failure after failure, avoid artificial investigation, is saved
Plenty of time improves efficiency, has ensured being smoothed out for engineering machinery work.
The technical solution adopted by the present invention is：
Vehicular Fault Diagnosis of Construction Machinery instrument, including housing and circuit board assemblies.Circuit board assemblies are connected to external
The data of bus are collected and analyzed by the CAN bus of engineering machinery, so as to obtain the diagnosis to failure.Housing is by circuit
Plate component carries out package protection, and realizes good heat dissipation, shockproof properties.
Specifically, the housing includes upper casing and lower casing, and upper casing and lower casing are equipped with corresponding threaded hole, in threaded hole
Equipped with fastening bolt.General upper casing and lower casing are square casing, and hole is threaded in the four corners of housing；On this basis, remove
Using threaded hole fitted bolt connection upper casing and lower casing, the modes such as bolt, buckle also can be used upper casing and lower casing are connected
It connects.
Further, it is provided in lower casing for the mounting base of mounting circuit boards component, mounting base is equipped with connecting hole.Peace
Seat is filled to set along the edge inside lower casing, and the quantity of mounting base is at least two, when lower casing is square, mounting base is set
In the four corners of lower casing.
Further, the interior bottom of lower casing is additionally provided with first heating column identical with the height of mounting base；The upper casing
Inside be provided with the second heating column, the first heating column and the second heating column respectively with circuit board assemblies thermal contact conductance.
First heating column inlay card touches the bottom of circuit board assemblies, and circuit board assemblies is risen in the interior bottom of lower casing
To the effect of support；Second heating column inlay card contacts the top of circuit board assemblies in the inner top of upper casing, while to circuit board group
Part plays the role of compression.
Further, the circuit board assemblies include mainboard and core board, and mainboard is fixed in mounting base, is set on mainboard
There are the input reverse-connection preventing circuit being sequentially communicated, common mode filtering circuit and over-pressed protection circuit, input reverse-connection preventing circuit and data cable
Connector is electrically connected；Core board is mounted on inside upper casing, and is electrically connected with mainboard.Unidirectional two pole is set in input reverse-connection preventing circuit
Pipe, Transient Suppression Diode and resettable fuse；Co-mode coil inductance is provided in common mode filtering circuit；Over-pressed protection circuit
In be provided with fixed value resistance, zener diode and metal-oxide-semiconductor.
Further, in order to be protected to core board circuit, reaching prevents interference, from lightning surge or due to voltage spikes
It destroys, is provided with isolated power supply module on the mainboard, isolated power supply module is electrically connected with core board.
Further, power down causes corrupted data in order to prevent, is provided with capacitance on the mainboard, capacitance and mainboard
Power supply circuit is connected.
Further, in order to ensure the normal work of diagnostic equipment, house dog is integrated on mainboard.
The junction of upper casing and lower casing is equipped with the connector of cooperation, and data wire connector is equipped at connector, and data cable connects
Connector is electrically connected with circuit board assemblies；The lower part of the lower casing is equipped with quakeproof bracket.
Further, the data wire connector is waterproof connector.
Further, in order to strengthen the heat dissipation inside diagnostic equipment, air hole is provided on the upper case side wall face, is breathed freely
Vent valve is provided in hole.It can adjust the connection relation of vent valve and air hole under normality, realize the change of air-tightness, thus will
Temperature inside diagnostic equipment is maintained in appropriate scope, improves the work efficiency and operating rate of diagnostic equipment.
Further, the vent valve is screw-type, forced, buckle-type or toggle formula vent valve；It can also adopt
The mode of breathing piece is set to breathe freely at air hole.
Further, the mainboard is equipped with multiple indicator lights, and upper casing is equipped with the lamp hole identical with indicator lamp quantity, refers to
Show lamp position in lamp hole.Different circuits is provided on mainboard, the break-make of every circuit represents different working conditions；In order to more
Add the working condition of directly displaying diagnostic equipment, the power supply circuit, input between the main circuit, mainboard and core board of mainboard are anti-
Circuit where reversal connection circuit and isolated power supply module is respectively connected to an indicator light, and the indicator light colors of each circuit are not
Together.
Further, the upper casing is equipped with corresponding card slot or fixture block with the side wall surface of lower casing, and upper casing and lower casing lead to
The cooperation for crossing card slot and fixture block is attached positioning.The meaning so set is, more accurate to the positioning of upper casing and lower casing,
Connection is more secured simultaneously.
Further, it is contemplated that the diagnostic equipment is mobile unit, and in order to reduce the vibrations during use, described is shockproof
Stent includes the connector of at least two strips, and connector is provided at both ends with bolt, at least two are additionally provided on connector
Connecting hole, connecting hole is interior to be equipped with the bolt mechanism being connected with lower casing, and flexible rings are equipped between connecting hole and bolt mechanism.
Compared with prior art, the beneficial effects of the present invention are：
1. the present invention by circuit board assemblies connect engineering machinery CAN bus, realize the collection to CAN bus data and
Analysis, so as to reach the detection of failure, saves the time and efforts of people, efficient, very convenient.
2. the present invention makes the working condition of diagnostic equipment more stablize, reduces external environment by setting quakeproof bracket
Interference, improves the accuracy in detection process.
3. the present invention by setting the first heating column and the second heating column, realizes the heat conduction to circuit board assemblies,
Play the role of very positive to reducing the temperature inside diagnostic equipment, rationally effectively control the temperature inside diagnostic equipment, improve
The efficiency and accuracy of diagnostic equipment work reduce the probability of crash.
4. the present invention is by setting air hole and vent valve, it can be achieved that the heat inside diagnostic equipment passes through cross-ventilated side
Formula realizes heat exchange, simpler to the control of diagnostic equipment internal temperature direct, convenient for improving the work efficiency and work of diagnostic equipment
Make accuracy.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings only shows the section Example of the present invention, therefore is not to be taken as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the exploded view of the present invention.
Fig. 3 is the structure diagram of upper casing.
Fig. 4 is the structure diagram of lower casing.
Fig. 5 is the structure diagram of connector.
Fig. 6 is the exploded view of quakeproof bracket.
Fig. 7 is partial circuit schematic diagram.
Fig. 8 is isolated power supply module circuit schematic.
Fig. 9 is the circuit diagram of capacitance.
In above-mentioned attached drawing, reference numeral is corresponding entitled：1- upper casings, the first heating columns of 101-, 102- air holes, 103-
Indicator light, 2- lower casings, the second heating columns of 201-, 202- mounting bases, 203- connecting holes, 3- vent valves, 4- quakeproof brackets, 401- are soft
Property circle, 402- connectors, 403- pin bushings, 404- bolts, 5- data wire connectors, 501- raised lines, 502- positioning port, 503-
Junction button, 6- lamp holes, 7- fastening bolts, 701- threaded holes.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Embodiments of the present invention include but not limited to following implementation
Example.
Embodiment
As shown in Fig. 1-Fig. 9, present embodiment discloses vehicular Fault Diagnosis of Construction Machinery instrument, including housing and circuit board
Component.Circuit board assemblies are connected to the CAN bus of external engineering machinery, and the data of bus are collected and are analyzed, so as to
Obtain the diagnosis to failure.
Housing is cuboid, and circuit board assemblies are carried out package protection, and realize good heat dissipation, shockproof properties.
Specifically, as shown in Fig. 2, the housing includes upper casing 1 and lower casing 2, upper casing 1 is equipped with corresponding with lower casing 2
Threaded hole 701, threaded hole 701 is interior to be equipped with fastening bolt 7.There are the wings of extension in the four corners of upper casing 1 and lower casing 2,
And the corresponding fitting of the wings of upper casing 1 and lower casing 2, hole 701 is threaded in wings.
Meanwhile as shown in Figure 1, the upper surface of upper casing 1, the side wall surface of upper casing 1, the lower surface of lower casing 2, the side wall of lower casing 2
Face and the surface of wings are provided with the groove-like structure of hollow out, and the meaning so set is：Pass through the channel-shaped knot of hollow out
Structure can reduce the wall thickness of upper casing 1 and lower casing 2, radiate convenient for housing；The structure for being capable of hollow out simultaneously more saves material, housing
Weight smaller.
As shown in Figure 3, Figure 4, the mounting base 202 for mounting circuit boards component is provided in lower casing 2, in mounting base 202
Equipped with connecting hole 203.Mounting base 202 is set along the edge inside lower casing 2, and the quantity of mounting base 202 is four, lower casing 2
Four corners be respectively arranged with a mounting base 202, the height of mounting base 202 is just the half of 2 internal height of lower casing.
Connecting hole 203 in mounting base 202 is internally threaded, be provided on circuit board assemblies in mounting base 202
Circuit board assemblies are fixed on mounting base 202 by the corresponding through hole in 203 position of connecting hole by bolt.
The interior bottom of lower casing 2 is additionally provided with first heating column 101 identical with the height of mounting base 202；In the upper casing 1
Be provided with the second heating column 201, the first heating column 101 and the second heating column 201 respectively with circuit board assemblies thermal contact conductance.
First heating column, 101 inlay card touches the bottom of circuit board assemblies in the interior bottom of lower casing 2, and to circuit board group
Part plays the role of support.First heating column, 101 quantity be one, and the first heating column 101 be rectangular-shape, the first heating column
101 are made of metal material, and preferably use copper product in the present embodiment.What the first heating column 101 was contacted with circuit board assemblies
Section is provided with heat-conducting silicone grease, and good convenient for being contacted between circuit board assemblies, heat conduction is uniform.
Second heating column, 201 inlay card contacts the top of circuit board assemblies in the inner top of upper casing 1, while to circuit board group
Part plays the role of compression.Second heating column, 201 quantity be three, and the second heating column 201 be rectangular-shape, the second heating column
201 are made of metal material, and preferably use copper product in the present embodiment.What the second heating column 201 was contacted with circuit board assemblies
Section is provided with heat-conducting silicone grease, and good convenient for being contacted between circuit board assemblies, heat conduction is uniform.
Circuit board assemblies include mainboard and core board, and mainboard and core board are PCB circuit board.Mainboard is fixed on mounting base
On 202, mainboard is equipped with the input reverse-connection preventing circuit being sequentially communicated, common mode filtering circuit and over-pressed protection circuit, inputs counnter attack
Circuit is connect to be electrically connected with data wire connector 5；Core board is mounted on inside upper casing 1, and is electrically connected with mainboard.
The lower surface of mainboard is connected with the first heating column 101, and the upper surface of core board is contacted with the second heating column 201
Connection.
As shown in fig. 7, unilateral diode, Transient Suppression Diode and self- recoverage insurance are set in input reverse-connection preventing circuit
Silk, unilateral diode use the product of ES2B models, and Transient Suppression Diode is using SMBJ18CA SMBJ51CA models
Product, resettable fuse using MSM110 33 models product；Co-mode coil inductance is provided in common mode filtering circuit, altogether
The product using ACM1211-102-2PL models of mould coil inductance；Fixed value resistance, voltage stabilizing two are provided in over-pressed protection circuit
Pole pipe and metal-oxide-semiconductor, the quantity of fixed value resistance is three, and uses the product of 20K/1%SR0603 series, the prevention of three resistance
Respectively 29 ohm, 30 ohm and 31 ohm, zener diode quantity is two, and MMSZ5242B and MMSZ5258B is respectively adopted
The product of model, metal-oxide-semiconductor quantity are two, and the product of IRFR6215PBF and ME2301 models is respectively adopted.
As shown in figure 8, in order to be protected to core board circuit, reaching prevents interference, from lightning surge or voltage point
Peak destroys, and is provided with isolated power supply module on the mainboard, isolated power supply module is electrically connected with mainboard or core board.At this
Isolate power module using URB2405YMD-10WR3 in embodiment and form in golden rising Yang isolated power supply modular circuit.
As shown in figure 9, power down causes corrupted data in order to prevent, capacitance, capacitance and mainboard are provided on the mainboard
Power supply circuit be connected.Capacitance act as electric power storage, charges during diagnostic equipment works normally to capacitance, works as outside
After electrically disconnected, capacitance is powered in a short time, ensures that the data inside diagnostic equipment are not lost.
In order to ensure the normal work of diagnostic equipment, house dog is integrated on mainboard.
As shown in figure 5, the junction of upper casing 1 and lower casing 2 is equipped with the connector of cooperation, being equipped with data cable at connector connects
First 5, data wire connector 5 is electrically connected with circuit board assemblies；
In order to ensure that diagnostic equipment is safe and reliable with external connection, the data wire connector 5 uses waterproof connector.Waterproof
Connector includes more connection terminals and positioning port 502, and positioning port 502 is the coaming plate of ellipse, is provided at least on coaming plate
Two positioning convex strips 501 are also set up there are one junction button 503, set that there are two for fixing external data line on junction button 503
Mounting hole is additionally provided with two sliding slots for external data line positioning in junction button 503.
In order to strengthen the heat dissipation inside diagnostic equipment, air hole 102, air hole 102 are provided in 1 side wall surface of upper casing
Inside it is provided with vent valve 3.It can adjust the connection relation of vent valve 3 and air hole 102 under normality, realize the change of air-tightness, from
And be maintained at the temperature inside diagnostic equipment in appropriate scope, improve the work efficiency and operating rate of diagnostic equipment.
In the present embodiment, the vent valve 3 is screw-type vent valve 3.
Mainboard is equipped with blue white four LED lights 103 of reddish yellow, and upper casing 1 is equipped with the lamp hole identical with 103 quantity of indicator light
6, indicator light 103 is located in lamp hole 6.Different circuits is provided on mainboard, the break-make of every circuit represents different work shapes
State；In order to which more directly the working condition of displaying diagnostic equipment, the power supply between the main circuit, mainboard and core board of mainboard are electric
Circuit where road, input reverse-connection preventing circuit and isolated power supply module is respectively connected to an indicator light 103, and the finger of each circuit
Show 103 color of lamp difference.
The side wall surface of upper casing 1 is equipped with fixture block, and the side wall surface of lower casing 2 is equipped with card slot corresponding with fixture block, and upper casing 1 is under
Shell 2 is attached positioning by the cooperation of card slot and fixture block.
It is mobile unit in view of the diagnostic equipment, in order to reduce the vibrations during use, the lower part of the lower casing 2 is equipped with
Quakeproof bracket 4.
As shown in fig. 6, the quakeproof bracket 4 includes the connector 402 of two strips, the both ends point of connector 402
Bolt is not provided with, and quakeproof bracket 4 is bolt-connected to outside and is fixed；Two connections are additionally provided on connector 402
Hole 203, connecting hole 203 is interior to be equipped with 404 mechanism of bolt being connected with lower casing 2, is equipped between 404 mechanism of connecting hole 203 and bolt
Flexible rings 401.
Lower casing 2 is provided with the through hole being connected with 404 mechanism of bolt, and 404 mechanism of bolt includes bolt 404 and pin bushing 403,
Bolt 404 is connected with through hole, and pin bushing 403 is sleeved on bolt 404, flexible rings 401 in the outer cover of pin bushing 403 of working together, soft
Property circle 401 again be connected 203 clamping of hole.
Flexible rings 401 are using I-shaped circle made of rubber material.
According to above-described embodiment, the present invention can be realized well.What deserves to be explained is based on above-mentioned design principle, it is
The technical issues of similary is solved, even if some made on architecture basics disclosed in this invention are without substantive change or profit
Color, used technical solution essence is still as the present invention, therefore it should also be as within the scope of the present invention.
Claims (10)
1. vehicular Fault Diagnosis of Construction Machinery instrument, including housing and circuit board assemblies, which is characterized in that the housing includes
Upper casing (1) and lower casing (2), upper casing (1) are equipped with corresponding threaded hole (701) with lower casing (2), fastening are equipped in threaded hole (701)
Bolt (7)；The mounting base (202) for mounting circuit boards component is provided in lower casing (2), mounting base (202) is equipped with connection
Hole (203)；The interior bottom of lower casing (2) is additionally provided with first heating column (101) identical with the height of mounting base (202)；Described
Be provided with the second heating column (201) in upper casing (1), the first heating column (101) and the second heating column (201) respectively with circuit board group
Part thermal contact conductance；The junction of upper casing (1) and lower casing (2) is equipped with the connector of cooperation, and data wire connector is equipped at connector
(5), data wire connector (5) is electrically connected with circuit board assemblies；The lower part of the lower casing (2) is equipped with quakeproof bracket (4).
2. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 1, which is characterized in that the circuit board assemblies
Including mainboard and core board, mainboard is fixed in mounting base (202), mainboard be equipped be sequentially communicated input reverse-connection preventing circuit,
Common mode filtering circuit and over-pressed protection circuit, input reverse-connection preventing circuit are electrically connected with data wire connector (5)；Core board is mounted on
Upper casing (1) is internal, and is electrically connected with mainboard.
3. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 2, which is characterized in that set on the mainboard
There is isolated power supply module, isolated power supply module is electrically connected with core board.
4. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 2, which is characterized in that set on the mainboard
There is capacitance, capacitance is connected with the power supply circuit of mainboard.
5. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 2, which is characterized in that the mainboard is equipped with
Multiple indicator lights (103), upper casing (1) are equipped with the lamp hole (6) identical with indicator light (103) quantity, and indicator light (103) is located at lamp hole
(6) in.
6. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 1, which is characterized in that described upper casing (1) side
Air hole (102) is provided on wall surface, vent valve (3) is provided in air hole (102).
7. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 6, which is characterized in that the vent valve (3)
For screw-type, forced, buckle-type or toggle formula vent valve.
8. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 1, which is characterized in that the data cable connection
Head (5) is waterproof connector.
9. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 1, which is characterized in that the upper casing (1) with
The side wall surface of lower casing (2) is equipped with corresponding card slot or fixture block, upper casing (1) and lower casing (2) by the cooperation of card slot and fixture block into
Row connection positioning.
10. vehicular Fault Diagnosis of Construction Machinery instrument according to claim 1, which is characterized in that the quakeproof bracket
(4) connector (402) of at least two strips is included, connector (402) is provided at both ends with bolt, on connector (402)
At least two connecting holes (203) are additionally provided with, bolt (404) mechanism being connected with lower casing (2), connection are equipped in connecting hole (203)
Flexible rings (401) are equipped between hole (203) and bolt (404) mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146597.0A CN108107288B (en) | 2017-11-17 | 2017-11-17 | Vehicle-mounted engineering machinery fault diagnosis instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146597.0A CN108107288B (en) | 2017-11-17 | 2017-11-17 | Vehicle-mounted engineering machinery fault diagnosis instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108107288A true CN108107288A (en) | 2018-06-01 |
| CN108107288B CN108107288B (en) | 2024-01-09 |
Family
ID=62206538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711146597.0A Active CN108107288B (en) | 2017-11-17 | 2017-11-17 | Vehicle-mounted engineering machinery fault diagnosis instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108107288B (en) |
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| US20080290503A1 (en) * | 2007-05-22 | 2008-11-27 | Centipede Systems, Inc. | Compliant thermal contactor |
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-
2017
- 2017-11-17 CN CN201711146597.0A patent/CN108107288B/en active Active
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| US20080290503A1 (en) * | 2007-05-22 | 2008-11-27 | Centipede Systems, Inc. | Compliant thermal contactor |
| CN102066960A (en) * | 2008-04-17 | 2011-05-18 | 泰拉丁公司 | Enclosed operating area for storage device testing systems |
| CN101871999A (en) * | 2010-06-10 | 2010-10-27 | 杭州远方光电信息有限公司 | Constant temperature windproof test chamber |
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| Publication number | Publication date |
|---|---|
| CN108107288B (en) | 2024-01-09 |
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