CN212378980U - Device for carrying out prestress restraint and elasticity detection on elastic element - Google Patents
Device for carrying out prestress restraint and elasticity detection on elastic element Download PDFInfo
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- CN212378980U CN212378980U CN202021462161.XU CN202021462161U CN212378980U CN 212378980 U CN212378980 U CN 212378980U CN 202021462161 U CN202021462161 U CN 202021462161U CN 212378980 U CN212378980 U CN 212378980U
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Abstract
The utility model provides a device for carrying out prestress restraint and elasticity detection on an elastic element, which comprises a base, a pressure lever, a force application mechanism and a guide seat, wherein the force application mechanism and the guide seat are arranged on the base; the pressure lever can be arranged on the guide seat in a vertically movable manner, a supporting position for placing an elastic element is arranged on the base below the pressure lever, the force application mechanism is connected or contacted with the pressure lever, and the pressure lever applies pressure to the elastic element placed on the supporting position; the device also comprises a pressure detection element for detecting the pressure applied by the force application mechanism or the pressure borne by the pressure rod, and/or a displacement detection element for detecting the vertical displacement of the pressure rod or the vertical displacement of the force application mechanism. The utility model applies pressure to the elastic element by the force applying mechanism through the pressure rod, and the stroke and/or the pre-compression elasticity of the elastic element can be obtained or converted through the measured pressure and/or displacement data; pre-stressed constraining of the elastic element is achieved, and/or the pressure or static stiffness thereof is tested.
Description
Technical Field
The utility model belongs to the frock clamp field of installation or test usefulness, concretely relates to carry out prestressing force restraint and elasticity detection's device to elastic element.
Background
In the industries of high-speed railways, common railways and urban rail transit, the mechanical properties of elastic elements (such as elastic strips, under-rail base plates, elastic base plates, springs, spring washers and the like) play a significant role in realizing accurate positioning, close fitting and fixing, vibration and noise reduction, service life guarantee, cost performance improvement, transportation safety, stability, comfort, technical level embodying and the like of rail systems and parts thereof, so that strengthening the measurement and judgment of the full-quality life cycle level of elastic element products is very important work. After an elastic element product manufacturer delivers a delivered product to a use unit, the elastic element product manufacturer usually attaches product delivery detection certification and other data for proving the product quality along with the product, but because the product has manufacturing tolerance and is influenced by the environmental conditions of a warehouse, a loading and unloading mode and the product performance attenuation in the inventory process, the product actually delivered or delivered has quality defects (particularly, the change of mechanical properties such as rigidity, geometric dimension, buckling pressure and the like of the elastic element product); meanwhile, when field random sampling detection is required during the service period of the elastic element product, most of using units have no practical detection means or have extremely high cost due to the configuration of special detection equipment, or entrust a third party to carry out recheck, so that the recheck time is long, the cost is high, and the recheck is not capable of carrying out the recheck during the inventory period, the detection before the installation of the product on the upper line or the random sampling detection during the service period, therefore, whether the performance of the elastic element product on the upper line can meet the technical standard of product design and the technical requirement agreed by contracts cannot be confirmed.
In addition, the applicant developed a prestressed elastic supporting member (such as the prestressed elastic supporting member in CN201921690649.5, and the prestressed elastic strip with a constraint structure in CN 201921690693.6), which requires compressing elastic elements (such as elastic strip, spring, elastic pad plate) during the manufacturing process to make it have counter-compression resistance-forming prestress; then, installing a constraint component; however, in the prior art, prestress constraint is usually required to be completed on a universal testing machine or a press in a factory, so that on one hand, the cost is high, and on the other hand, inconvenience is brought to the manufacturing of the elastic element due to the limitation of a field and equipment; it is therefore desirable to develop a relatively simple auxiliary device.
Therefore, the present invention has been made in an effort to provide a simple and practical inspection apparatus that can satisfy the random sampling inspection requirements after the completion of the production of elastic members, during the storage, before the installation, and during the service period in the production field, and that can also be used as a necessary device for the restraint fixing after the prestressing of these elastic member products.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a device for pre-stress restraining and elastic detection of an elastic element, which facilitates pre-stress restraining and elastic detection of a finished product when the elastic element is manufactured.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
a device for carrying out prestress constraint and elasticity detection on an elastic element comprises a base, a pressure lever, a force application mechanism and a guide seat, wherein the force application mechanism and the guide seat are arranged on the base; the pressure lever can be arranged on the guide seat in a vertically movable manner, a supporting position for placing an elastic element is arranged on the base below the pressure lever, the force application mechanism is connected or contacted with the pressure lever, and the pressure lever applies pressure to the elastic element placed on the supporting position; the device also comprises a pressure detection element for detecting the pressure applied by the force application mechanism or the pressure borne by the pressure rod, and/or a displacement detection element for detecting the vertical displacement of the pressure rod or the vertical displacement of the force application mechanism.
Optionally, the force application mechanism comprises a force transmission lever and a power component, and the pressure lever and the power component are respectively located on two sides of a fulcrum of the force transmission lever; the power component is connected with the first end of the force transmission lever and applies upward acting force to the force transmission lever, and the second end of the force transmission lever acts on the pressure lever and generates downward acting force to the pressure lever; the pressure detection element is used for detecting the pressure applied to the force transmission lever by the force application mechanism, and the displacement detection element is used for detecting the vertical displacement of the force transmission lever. The pressure detection element is arranged on the power component or between the power component and the force transmission lever; the displacement detection element is installed on the base through the force application support, and the displacement detection element is opposite to the axis of the output end of the power component in the vertical direction.
Optionally, the displacement detection element is a dial indicator, the dial indicator is located above the force transmission lever, and a measurement end of the dial indicator is in contact with the force transmission lever.
Optionally, the output end of the power applying component is rotatably connected with the force transmission lever, or the output end of the power applying component is abutted with the force transmission lever through a spherical surface or an arc surface.
Optionally, the force transmission lever is mounted on the base through a dowel bar support, and the dowel bar support is located between the guide seat and the force application mechanism; the force transmission lever is rotatably connected with the force transmission rod support through a pin shaft.
Optionally, the upper end of the pressure lever is of a spherical structure and is in contact with the lower surface of the second end of the force transmission lever; or a spherical pressure head is connected below the second end of the force transmission lever and is in contact with the upper end face of the pressure rod.
Optionally, a support frame is arranged on the base, the force application mechanism and the guide seat are both mounted on the support frame, the force application mechanism is located above the guide seat, the guide seat is located above the support position, the lower end of the force application mechanism is abutted to the upper end of the pressure lever, the displacement detection element is arranged on the support seat or the support frame, and a displacement measurement sheet matched with the displacement detection element is mounted on the pressure lever; the pressure detection element is connected with the force application mechanism or is arranged at the contact position of the force application mechanism and the pressure rod.
Optionally, a mounting hole is vertically formed in the guide seat, the pressure lever penetrates through the mounting hole, or a guide sleeve is mounted in the mounting hole, and the pressure lever penetrates through the guide sleeve.
Optionally, a supporting plate for supporting the elastic element is arranged on the base corresponding to the supporting position, the lower end of the pressure lever is tapered, and the supporting position is detachably provided with a positioning block for positioning the elastic element; or a bearing plate for supporting the elastic element is arranged on the base corresponding to the supporting position, and the lower end of the pressure lever is connected with a pressure plate.
Optionally, as mentioned above, the utility model has the advantages that: the utility model discloses, the forcing mechanism exerts pressure to elastic element (such as bullet strip, spring washer, rubber and plastic elastic element or compressible pressure vessel or any other compressible elastic element) through the depression bar, through pressure and/or displacement data that record, directly reachs or converts out elastic element's stroke and/or precompression elasticity; the elastic element is subjected to prestress constraint or pressure and/or static rigidity test, and the quality hidden trouble caused by the fact that the elastic element products purchased and warehoused cannot be detected and confirmed due to the fact that a laboratory or an engineering construction site or a warehouse needs to spend high test cost is effectively eliminated.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural diagram of another embodiment of the present invention;
FIG. 4 is a top view of FIG. 3;
fig. 5 is a schematic structural diagram of another embodiment of the present invention;
FIG. 6 is a top view of FIG. 5;
fig. 7 is a schematic structural diagram of another embodiment of the present invention.
Part number description:
1-a base; 2-a pressure-detecting element; 3-a power component; 4-a force application support; 5-a top block; 6-a displacement detection element; 7-a force transmission lever; 8-dowel bar support; 9-a pin shaft; 10-pressure head; 11-a pressure bar; 12-a guide sleeve; 13-a guide seat; 14-positioning blocks; 15-spring bar; 16-a support plate; 17-an elastic backing plate; 18-a platen; 19-a support frame; 20-a gauge stand; 21-displacement assay plate.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Examples
As shown in fig. 1 and 2, the device for prestressed restraint and elastic detection of an elastic element in the present example comprises a base 1, a force transmission lever 7, a pressure lever 11, a power component 3 and a guide seat 13; the force transmission lever 7, the power component 3 and the guide seat 13 are arranged on the base 1, and the force transmission lever 7 is transversely arranged and can rotate around a fulcrum; the guide seat 13 and the power component 3 are respectively positioned at two sides of the fulcrum of the force transmission lever 7; the pressure lever 11 is arranged on the guide seat 13 in a way of moving up and down; a supporting position for placing an elastic element is arranged on the base 1 below the pressure lever 11; the power component 3 is connected with or acts on the first end of the force transmission lever 7, and exerts an upward acting force on the force transmission lever 7, and the second end of the force transmission lever 7 acts on the pressure lever 11 to generate a downward acting force on the pressure lever 11; wherein a detection element is further provided for detecting a pressure value exerted by the power component 3 on the force transmission lever 7 and/or for detecting a vertical displacement of the force transmission lever 7.
The utility model discloses, power component 3 exerts pressure to elastic element (such as elastic strip, spring washer, rubber and plastic elastic element or compressible pressure vessel or any other compressible elastic element) through lever and depression bar 11, through pressure and/or displacement data that record, combines the length of both ends stress point apart from the fulcrum of biography power lever 7, can calculate elastic element's stroke and/or precompression elasticity; the elastic element is subjected to prestress constraint or pressure and/or static rigidity test, and the quality hidden trouble caused by the fact that the elastic element products purchased and warehoused cannot be detected and confirmed due to the fact that a laboratory or an engineering construction site or a warehouse needs to spend high test cost is effectively eliminated.
Specifically, the power member 3 is provided with a pressure detecting element 2 for detecting the pressure applied by the power member 3 to the force transmission lever 7, and the pressure detecting element 2 may be provided at a contact position of the power member 3 and the force transmission lever 7. A displacement detection element 6 for detecting the upward displacement of a force transmission lever 7 is installed on the base 1 through a force application support 4, and the displacement detection element 6 is right opposite to the axis of the output end of the power component 3 in the vertical direction, namely the displacement detection element 6 and the power component 3 are coaxially arranged.
The power component 3 can adopt a hydraulic cylinder, an air cylinder, a jack and the like. The force measurement and the displacement measurement can be obtained by adopting a measurement or measurement and calculation mode; the displacement detecting element 6 may be of a contact type, such as a dial indicator, a displacement sensor, etc.; or contactless, such as an infrared range finder or the like. The pressure detecting element 2 can adopt a pressure gauge, a pressure sensor, a spring dynamometer, a strain gauge type dynamometer, a weighing force sensor and the like.
In this example, the displacement detecting element 6 is a dial indicator, the force application support 4 is located on the side surface of the force transmission lever 7, the upper end of the force application support 4 transversely extends to form an extension part, the dial indicator is installed on the extension part and located above the force transmission lever 7, and the measuring end of the dial indicator is in contact with the upper surface of the force transmission lever 7.
The force transmission lever 7 is arranged on the base 1 through a dowel bar support 8, wherein the dowel bar support 8 is positioned between the guide seat 13 and the power component 3; the dowel bar support 8 is fixed on the base 1, and the force transmission lever 7 is rotatably connected with the upper part of the dowel bar support 8 through a pin shaft 9.
In one embodiment, the output end of the power component 3 is rotatably connected with the second end of the force transmission lever 7 through an ear seat, in another embodiment, the output end of the power component 3 is abutted with the force transmission lever 7 through a spherical surface or an arc surface so as to ensure that vertical pressure is applied to the force transmission lever 7, and the force transmission lever 7 and the power component 3 can move relatively.
In this example, the force transmission lever 7 is provided with a top block 5, the lower end of the top block 5 is a spherical surface or a cambered surface, and the lower end of the top block 5 is contacted and abutted with the upper end (output end) of the power component 3.
In this example, in order to ensure that the force transmission lever 7 is in contact with the pressure lever 11 and apply downward pressure to the pressure lever 11, a spherical pressure head 10 is connected below the second end of the force transmission lever 7, the spherical pressure head 10 is in point contact with the upper end face of the pressure lever 11, in order to ensure that the contact is maintained in the action process, the upper end of the pressure lever 11 is in a disc shape, and the pressure head 10 is connected with the force transmission lever 7 through threads. In another embodiment, the upper end of the pressure lever 11 is of a spherical configuration and contacts the lower surface of the second end of the force transmission lever 7 in a point or line contact.
Wherein, one part of the guide seat 13 is connected with the base 1, and the other part is suspended to form a cantilever; a mounting hole is vertically formed in the suspended part, and the pressure lever 11 penetrates through the mounting hole and can slide up and down along the mounting hole; in this example, a guide sleeve 12 is installed in the installation hole, and the pressure lever 11 is inserted into the guide sleeve 12.
In order to support the elastic element, the support position is provided with a support plate 16 for supporting the elastic element, and the support plate 16 is fixed on the base 1 and is positioned below the pressure rod 11.
When the device is used for elastic strip prestress constraint or detection, the lower end of the pressure lever 11 is conical, and the lower end of the pressure lever 11 is pressed on the elastic strip; a positioning block 14 for positioning the elastic strip is arranged on one side of the base 1, which is located on the supporting plate 16, the positioning block 14 can be detachably connected with the base 1 through a bolt, so as to be replaced according to different products, in this example, the cross section of the positioning block 14 is in an inverted L shape, and a limiting groove is formed between the positioning block 14 and the supporting plate 16, and is used for the elastic strip to extend into the groove for positioning, as shown in fig. 1 and 2.
When used for an elastic backing plate 17, a spring washer or other components, the lower end of the pressure lever 11 is connected with a pressure plate 18, and prestress constraint and detection are carried out by the cooperation of the pressure plate 18 and the supporting plate 16, as shown in fig. 3 and 4.
When detecting the elastic strip 15, as shown in fig. 1: the device is arranged on a fixed platform or the ground in a laboratory or a construction site, and the power component 3 adopts a jack; placing the product to be detected or restrained on a positioning position (particularly, the end surface of the conical end of the pressure lever 11 is contacted with the upper surface of the nose part in the middle of the elastic strip 15, and the upper surfaces of the tails of the two elastic strips 15 are contacted with the groove surface of the positioning block 14 at the tail of the elastic strip 15) and ensuring good fixation; installing and adjusting a pressure gauge and a dial indicator to enable data in the gauge to return to a zero state; after determining that the systems are in a good state, inserting a rocker into a crank hole of the jack, holding the rocker handle to rock up and down at a uniform speed, ensuring that a mandril of the jack continuously extends against a contact of the force transmission lever 7, observing that a pressure gauge reaches a specified pressure value F1 to stop, respectively recording data (F1 and S1) of a lower pressure gauge and a dial indicator, and respectively obtaining a spring 15 buckling pressure F2 (F1) L1/L2 and a spring 15 stroke S2 (S1) L2/L1 according to F1 (F1) L2) L2 and S1/L1 (S2/L2). The elastic strip can be applied to the I-shaped elastic strip 15, the II-shaped elastic strip 15 and the like in the rail fastener.
If the elastic strip 15 needs to be restrained, when a dial indicator or a pressure gauge reaches an expected value, pressurization is stopped and pressure maintaining is carried out, then one restraining rod respectively penetrates through and contacts the lower surface of one outer limb rod of the elastic strip 15, the upper surface of the arc-shaped rod in the middle of the elastic strip 15 and the lower surface of the other outer limb rod of the elastic strip 15, and the restraining rod is fixed after being well contacted with the contact points. After the fixation is confirmed, the force application device is decompressed, and finally the restrained elastic strip 15 is taken out together with the restraining rod. Referring to the manufacturing manner of the prestressed elastic strip 15 with a constraint structure in CN 201921690693.6, the device can perform prestressed constraint on the elastic strip 15 during the manufacturing process.
Fig. 5 and 6 are schematic views showing another embodiment, which is different from fig. 1 in that the force applying mechanism is located above the pressure rod 11 and directly acts on the pressure rod 11, so that an additional transmission mechanism is omitted; specifically, a supporting frame 19 is installed on the base 1, the force application mechanism comprises a power part 3, the power part 3 and a guide seat 13 are installed on the supporting frame 19, the guide seat 13 is located above a supporting position, the power part 3 is arranged at the top of the supporting frame 19 and located above the guide seat 13, and the lower end of the power part 3 is directly abutted to the upper end of the pressure rod 11; the pressure detection element 5 is connected with the power component 3 or arranged on the contact surface of the power component 3 and the pressure rod 11; the pressure detection element 5 may adopt the components in the above embodiments; in this example, the displacement detecting element 6 adopts a dial indicator, the dial indicator is arranged on the guide seat 13 through an indicator seat 20, the pressure lever 11 is connected with a displacement measuring sheet 21, and the displacement measuring sheet 21 is a rigid baffle; the displacement measuring sheet 21 is positioned above the measuring end of the dial indicator, when the displacement measuring sheet 21 is in an initial state, the displacement measuring sheet can be in contact with the measuring end of the dial indicator or pressed on the measuring end, and in the pressure applying process of the power component 3, the displacement parameter can be measured by reading the variable quantity of the dial indicator, so that the compression quantity of the elastic strip or other elastic elements is obtained.
Fig. 7 is a schematic view of another embodiment, which is different from the embodiment shown in fig. 5 in that a pressure plate 18 is connected to the lower end of the pressure rod 11, and prestress is restrained and detected by the cooperation of the pressure plate 18 and the support plate 16.
When the embodiment shown in fig. 3 and 7 is used for detecting the elastic backing plate 17, the spring washer and the like, the pressing plate 18 and the supporting plate 16 are used for pressing, and other operation modes refer to the operation mode of the elastic strip 15.
When the elastic pad 17, the spring washer, etc. (such as the prestressed elastic support member in CN 201921690649.5) are constrained, the elastic pad 17 is placed in the upper and lower constraining bodies and then placed on the support plate 16, and then pressure is applied, and when the dial gauge or the pressure gauge reaches a desired value, the pressure is stopped and maintained, and then locking and fixing are performed. After the fixation is confirmed, the force application device is decompressed, and finally the upper restraint body, the lower restraint body and the elastic cushion plate 17 which are restrained and fixed together are taken out.
The determination can be made by the method described above when the free-state elastic element is to be tested from 0 to the desired value, or the deformation curve after increasing the deformation is determined for the elastic element already constrained.
The utility model discloses can carry out prestressing force restraint, and/or test its pressure and/or quiet rigidity to elastic element, eliminate laboratory or engineering job site or storehouse effectively and can't or do not detect the elastic element product of warehousing to purchase and confirm and bring the quality hidden danger after using because of need spend high test cost.
In addition to the upright position shown in this embodiment, the device may be used in an overall inclined position, i.e. the elastic element is correspondingly inclined on the base 1, and the elastic element is pressed and restrained or detected in a direction perpendicular to the base 1.
Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A device for carrying out prestress constraint and elasticity detection on an elastic element is characterized in that: comprises a base, a pressure lever, a force application mechanism and a guide seat, wherein the force application mechanism and the guide seat are arranged on the base; the pressure lever can be arranged on the guide seat in a vertically movable manner, a supporting position for placing an elastic element is arranged on the base below the pressure lever, the force application mechanism is connected or contacted with the pressure lever, and the pressure lever applies pressure to the elastic element placed on the supporting position; the device also comprises a pressure detection element for detecting the pressure applied by the force application mechanism or the pressure borne by the pressure rod, and/or a displacement detection element for detecting the vertical displacement of the pressure rod or the vertical displacement of the force application mechanism.
2. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 1, wherein: the force application mechanism comprises a force transmission lever and a power component, and the pressure lever and the power component are respectively positioned at two sides of a fulcrum of the force transmission lever; the power component is connected with the first end of the force transmission lever and applies upward acting force to the force transmission lever, and the second end of the force transmission lever acts on the pressure lever and generates downward acting force to the pressure lever; the pressure detection element is used for detecting the pressure applied to the force transmission lever by the force application mechanism, and the displacement detection element is used for detecting the vertical displacement of the force transmission lever.
3. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 2, wherein: the pressure detection element is arranged on the power component or between the power component and the force transmission lever; the displacement detection element is installed on the base through the force application support, and the displacement detection element is opposite to the axis of the output end of the power component in the vertical direction.
4. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 3, wherein: the displacement detection element is a dial indicator, the dial indicator is positioned above the force transmission lever, and the measuring end of the dial indicator is in contact with the force transmission lever.
5. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 2, wherein: the output end of the power component is rotatably connected with the force transmission lever, or the output end of the power component is abutted with the force transmission lever through a spherical surface or a cambered surface.
6. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 2, wherein: the force transmission lever is arranged on the base through a dowel bar support, and the dowel bar support is positioned between the guide seat and the force application mechanism; the force transmission lever is rotatably connected with the force transmission rod support through a pin shaft.
7. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 2, wherein: the upper end of the pressure lever is of a spherical structure and is in contact with the lower surface of the second end of the force transmission lever; or a spherical pressure head is connected below the second end of the force transmission lever and is in contact with the upper end face of the pressure rod.
8. The apparatus for pre-stress restraining and elasticity testing of elastic elements according to claim 1, wherein: the base is provided with a supporting frame, the force application mechanism and the guide seat are both arranged on the supporting frame, the force application mechanism is positioned above the guide seat, the guide seat is positioned above the supporting position, the lower end of the force application mechanism is abutted against the upper end of the pressure lever, the displacement detection element is arranged on the supporting seat or the supporting frame, and the pressure lever is provided with a displacement measuring sheet matched with the displacement detection element; the pressure detection element is connected with the force application mechanism or is arranged at the contact position of the force application mechanism and the pressure rod.
9. Device for pre-stressed restraint and elastic testing of elastic elements according to any of claims 1 to 8, characterized in that: the guide seat is vertically provided with a mounting hole, the pressure rod penetrates through the mounting hole, or a guide sleeve is arranged in the mounting hole, and the pressure rod penetrates through the guide sleeve.
10. Device for pre-stressed restraint and elastic testing of elastic elements according to any of claims 1 to 8, characterized in that: a bearing plate for supporting the elastic element is arranged on the base corresponding to the supporting position, the lower end of the pressure lever is conical, and the supporting position is detachably provided with a positioning block for positioning the elastic element; or a bearing plate for supporting the elastic element is arranged on the base corresponding to the supporting position, and the lower end of the pressure lever is connected with a pressure plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462161.XU CN212378980U (en) | 2020-07-22 | 2020-07-22 | Device for carrying out prestress restraint and elasticity detection on elastic element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462161.XU CN212378980U (en) | 2020-07-22 | 2020-07-22 | Device for carrying out prestress restraint and elasticity detection on elastic element |
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| CN212378980U true CN212378980U (en) | 2021-01-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924121A (en) * | 2021-02-01 | 2021-06-08 | 上海交通大学 | Device and method for measuring rigidity of inner cavity of elastic structure |
| CN114526880A (en) * | 2022-03-02 | 2022-05-24 | 武汉理工大学 | Test device for simulating ship long-span structure bottom layer constraint |
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2020
- 2020-07-22 CN CN202021462161.XU patent/CN212378980U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924121A (en) * | 2021-02-01 | 2021-06-08 | 上海交通大学 | Device and method for measuring rigidity of inner cavity of elastic structure |
| CN112924121B (en) * | 2021-02-01 | 2022-04-26 | 上海交通大学 | Device and method for measuring rigidity of inner cavity of elastic structure |
| CN114526880A (en) * | 2022-03-02 | 2022-05-24 | 武汉理工大学 | Test device for simulating ship long-span structure bottom layer constraint |
| CN114526880B (en) * | 2022-03-02 | 2023-03-28 | 武汉理工大学 | Test device for simulating bottom layer constraint of large-span structure of ship |
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