CN214666616U - Strain testing device for shell parts - Google Patents
Strain testing device for shell parts Download PDFInfo
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- CN214666616U CN214666616U CN202120627994.5U CN202120627994U CN214666616U CN 214666616 U CN214666616 U CN 214666616U CN 202120627994 U CN202120627994 U CN 202120627994U CN 214666616 U CN214666616 U CN 214666616U
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- force sensor
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- strain gauge
- load applying
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model belongs to the field of strain test and discloses a strain test device for shell parts, which comprises a bracket, a load applying device, a strain gauge and a force sensor; one end of the support is connected with a part to be tested, a load applying end of the load applying device is connected with one end of the force sensor, the other end of the force sensor is in contact with the side wall of one end, away from the support, of the part to be tested, and the strain gauge is connected with the position, needing strength analysis, of the part to be tested. The force sensor is arranged between the load applying end of the load applying device and the part to be tested, the strain gauge is arranged at the position of the part to be tested, which needs to be subjected to strength analysis, and the real-time synchronous acquisition, monitoring and recording of load data and strain data are realized through the force sensor and the strain gauge.
Description
Technical Field
The utility model belongs to the test field of meeting an emergency relates to a casing part's test device that meets an emergency.
Background
The shell type part is a main stressed component of the transmission in the torque transmission process, and the stability of the shell is important for the whole transmission. The strain test of the shell is verification and feedback of an early-stage theoretical simulation result, practical basis is provided for development and improvement of shell strength parts, the development period is effectively shortened, and the development cost is reduced.
At present, the strain test of different load working conditions of a transmission shell generally obtains a load value in a mode of matching a force measuring ring and a secondary instrument. However, the method adopts manual reading, cannot record the load value in real time, has low numerical precision, is most important, is inconvenient for synchronous analysis of strain and load data after the test, and is difficult to install the force measuring ring at the load loading test device of the transmission shell.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art, the numerical value precision of derailleur casing strain test is low, unable real-time recording load value, and the shortcoming of used device installation difficulty provides a casing class part strain test device.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a strain testing device for shell parts comprises a bracket, a load applying device, a strain gauge and a force sensor; one end of the support is connected with a part to be tested, a load applying end of the load applying device is connected with one end of the force sensor, the other end of the force sensor is in contact with the side wall of one end, away from the support, of the part to be tested, and the strain gauge is connected with the position, needing strength analysis, of the part to be tested.
The utility model discloses further improvement lies in:
the load applying device is a jack.
The force sensor is a flat force sensor.
One end of the strain gauge is connected with a position of the part to be tested, which needs to be subjected to strength analysis, in a sticking manner.
The device also comprises a lead and a data acquisition system; the strain gauge and the force sensor are connected with a data acquisition system through leads.
The wire is connected with the wiring terminal of the strain gauge in a welding mode, and protective glue is coated at the welding position.
The wire connects the strain gage to the data acquisition system and the force sensor to the data acquisition system according to a 3-wire 1/4 bridge measurement bridge.
The part to be tested is rotatably connected with the bracket.
One end of the support, which is far away from the part to be tested, is provided with an iron floor, and the load applying device is positioned above the iron floor.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses casing class part's test device that meets an emergency, apply the end and wait to test and set up force sensor between the part through the load of applying the device at the load, the position that the part need carry out intensity analysis at the examination of awaiting measuring sets up the foil gage, realize load data's real-time synchronization collection through force sensor, monitoring and record, realize the real-time synchronization collection of strain data through the foil gage, monitoring and record, compare in the current artifical mode of reading load data, very big promotion load data's numerical precision, and guaranteed load data and the real-time correspondence of strain data, be convenient for carry out subsequent synchronous analysis.
Furthermore, the force sensor is a flat force sensor, is simple to mount, and can be in good contact with the lower part of the part to be tested by adjusting the height of the load applying device.
Furthermore, the device also comprises a lead and a data acquisition system; the strain gauge and the force sensor are connected with a data acquisition system through wires, and the strain data of the strain gauge and the load data of the force sensor are recorded and monitored in real time through the data acquisition system, so that subsequent strain analysis can be conveniently carried out.
Further, wire and foil gage's binding post welded connection, and protective glue is scribbled to the splice, when guaranteeing stable connection, guarantee that the wire is insulating between wire and the part that awaits measuring, prevent to disturb foil gage production, promote the data accuracy of strain data then.
Furthermore, the part to be tested is rotatably connected with the support, so that the part to be tested can be rotated by different angles according to the test requirement without repeated disassembly and fixation.
Drawings
Fig. 1 is a schematic structural view of a strain testing device for casing parts according to the present invention;
fig. 2 is a block diagram of the usage flow of the strain testing device of the present invention;
fig. 3 is a schematic diagram of a 3-wire 1/4 bridge strain connection according to the present invention;
fig. 4 is the utility model discloses a force sensor data acquisition system wiring schematic diagram.
Wherein: 1-a scaffold; 2-a load applying device; 3-a force sensor; 4-a part to be tested; 5-iron floor.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in further detail with reference to the accompanying drawings:
referring to the figure 1, the utility model provides a casing class part strain test device can realize meeting an emergency and load synchronous acquisition, has improved load data's data accuracy, and strain test device installs simply, facilitates for casing class part strain test. Specifically, the strain testing device for the shell type part comprises a bracket 1, a load applying device 2, a strain gauge and a force sensor 3.
One end of the support 1 is connected with a part 4 to be tested, a load applying end of the load applying device 2 is connected with one end of the force sensor 3, the other end of the force sensor 3 is in contact with the side wall of one end, far away from the support 1, of the part 4 to be tested, and the strain gauge is connected with the position, needing strength analysis, of the part 4 to be tested.
The utility model discloses casing class part's test device that meets an emergency, apply the end and set up force sensor 3 between the part 4 of awaiting measuring through the load that applies device 2 at the load, position that the part 4 of awaiting measuring need carry out intensity analysis sets up the foil gage, realize the real-time synchronous acquisition of load data through force sensor 3, monitoring and record, realize the real-time synchronous acquisition of strain data through the foil gage, monitoring and record, compare in the mode that present manual work read load data, very big promotion load data's numerical precision, and guaranteed that load data corresponds with the real-time of strain data, be convenient for carry out subsequent synchronous analysis.
Preferably, the load applying means 2 is a jack, and different loads are applied by using the jack.
Preferably, the force sensor 3 is a flat force sensor, the installation is simple, and the force sensor 3 can be well contacted with the lower part of the part to be tested 4 by adjusting the height of the load applying device 2.
Preferably, one end of the strain gauge is connected with a position of the part to be tested 4, which needs to be subjected to strength analysis, in a pasting mode, the position of the part to be tested 4, which needs to be subjected to strength analysis, is determined, and after the pasting position of the strain gauge is determined by combining the actual structure of the part to be tested 4, enough space is reserved at the pasting position, and the planar pasting of the strain gauge is guaranteed.
Preferably, the strain testing device for the shell type part further comprises a lead and a data acquisition system; the strain gauge and the force sensor 3 are connected with a data acquisition system through wires, and the strain data of the strain gauge and the load data of the force sensor 3 are recorded and monitored in real time through the data acquisition system, so that subsequent strain analysis can be conveniently carried out.
Preferably, the wire is welded with the wiring terminal of foil gage, and the welding department scribbles protection glue, when guaranteeing stable connection, guarantees that the wire is insulating between wire and the part 4 that awaits measuring, prevents to disturb the foil gage production, promotes the data accuracy of strain data then.
Preferably, the wires connect the strain gauge to the data acquisition system and the force sensor 3 to the data acquisition system according to a 3-wire 1/4 bridge measurement bridge.
Preferably, the part 4 to be tested is rotatably connected with the bracket 1, so that the part 4 to be tested can be rotated by different angles according to test requirements without repeated disassembly and fixation.
Preferably, an iron floor 5 is arranged at one end of the support 1, which is far away from the part 4 to be tested, and the load applying device 2 is positioned above the iron floor 5 and is suitable for different testing environments.
The following introduces the utility model discloses the concrete working process of the strain test device of casing class part to the gearbox housing explains as an example:
referring to fig. 2, (1) determining the strength analysis position of the transmission housing, and determining the strain gauge pasting position by combining the actual structure of the transmission housing, wherein the pasting position is required to reserve enough space to ensure the strain gauge to be pasted on the plane.
(2) And selecting a strain gauge with a proper model and a measuring bridge circuit, sticking the strain gauge and leading out a lead. Specifically, according to the strain test environment and requirements of the transmission housing, a strain gauge and a measurement bridge circuit of an appropriate type are selected, in the embodiment, a 3-wire 1/4 bridge is taken as an example, whether the grating of the strain gauge is intact or not is checked, whether bending exists or not is checked, and whether the resistance value of the strain gauge is within a nominal range is measured.
(3) And checking that the strain gauge and the lead are in good function. And adhering the strain gauge and the wiring terminal thereof according to the specification, welding the strain gauge to lead out the wires, welding one wire on one pin, welding two wires on the other pin, and coating protective glue on the welding position. And after the glue is solidified, measuring the resistance value between the two pins of the strain gauge at the end of the lead, measuring whether the lead is insulated from the shell of the transmission, and checking the wiring or re-sticking the strain gauge if the lead is abnormal.
(4) And installing a transmission shell, a jack and a force sensor. Fixing the transmission shell on the bracket 1, installing at 0 degree in the forward direction, paying attention to the lead protecting the strain gauge and the force sensor 3 in the installation process, and installing the jack and the force sensor 3.
(5) And connecting a data acquisition system. According to the wiring mode shown in fig. 3 and 4, the wires of the strain gauge and the force sensor 3 are connected to the corresponding channels of the data acquisition system, and the channels are configured and debugged.
(6) And monitoring and recording strain data and load data in real time through a data acquisition system, vertically and upwards loading by using a jack until the maximum load required by the test is reached, stopping loading and unloading the load.
(7) And (5) rotating the transmission shell clockwise by different angles according to the test requirement, and repeating the process (6).
(8) And carrying out strength analysis on the transmission shell according to the collected strain data and load data.
The utility model discloses utilize flat force sensor 3 to realize the real-time synchronization collection of signal of meeting an emergency and load among the gearbox housing strength test, but real-time recording data, data accuracy is high, and the installation is simple, easily realizes.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (9)
1. The strain testing device for the shell type part is characterized by comprising a bracket (1), a load applying device (2), a strain gauge and a force sensor (3);
one end of the support (1) is connected with a part (4) to be tested, the load applying end of the load applying device (2) is connected with one end of the force sensor (3), the other end of the force sensor (3) is in contact with the side wall of one end, away from the support (1), of the part (4) to be tested, and the strain gauge is connected with the position, needing strength analysis, of the part (4) to be tested.
2. Device for strain testing of shell-like parts according to claim 1, characterized in that the load applying means (2) is a jack.
3. Device for strain testing of a housing type part according to claim 1, characterised in that the force sensor (3) is a flat force sensor.
4. The device for testing the strain of a shell part as claimed in claim 1, wherein one end of the strain gauge is connected with a position of the part (4) to be tested, which needs to be subjected to strength analysis, in a sticking manner.
5. The strain testing device of claim 1, further comprising a wire and a data acquisition system;
the strain gauge and the force sensor (3) are connected with a data acquisition system through leads.
6. The device for testing the strain of the shell-like part according to claim 5, wherein the lead is connected with the wiring terminal of the strain gauge in a welding mode, and protective glue is coated on the welding position.
7. Device for strain testing of housing-like parts according to claim 5, characterised in that the wires connect the strain gauges to the data acquisition system and the force sensors (3) to the data acquisition system according to a 3-wire 1/4 bridge measuring bridge.
8. Device for strain testing of shell-like parts according to claim 1, characterized in that the part to be tested (4) is rotatably connected to the holder (1).
9. Device for strain testing of shell-like parts according to claim 1, characterized in that the end of the holder (1) remote from the part to be tested (4) is provided with an iron floor (5), and the load applying means (2) is located above the iron floor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120627994.5U CN214666616U (en) | 2021-03-26 | 2021-03-26 | Strain testing device for shell parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120627994.5U CN214666616U (en) | 2021-03-26 | 2021-03-26 | Strain testing device for shell parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214666616U true CN214666616U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120627994.5U Active CN214666616U (en) | 2021-03-26 | 2021-03-26 | Strain testing device for shell parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214666616U (en) |
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2021
- 2021-03-26 CN CN202120627994.5U patent/CN214666616U/en active Active
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