CN110346165B - Load simulator - Google Patents
Load simulator Download PDFInfo
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- CN110346165B CN110346165B CN201910728519.4A CN201910728519A CN110346165B CN 110346165 B CN110346165 B CN 110346165B CN 201910728519 A CN201910728519 A CN 201910728519A CN 110346165 B CN110346165 B CN 110346165B
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- oil cylinder
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- 238000004088 simulation Methods 0.000 claims abstract description 81
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 238000000429 assembly Methods 0.000 claims abstract description 20
- 238000012356 Product development Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a load simulation device which is used for testing electrohydraulic direct-drive products and comprises a supporting mechanism, an oil cylinder, a load simulation mechanism and at least one group of tensioning assemblies for providing pretightening force, wherein the supporting mechanism provides support for the tensioning assemblies and the oil cylinder, and the tensioning assemblies are connected with the load simulation mechanism and apply pretightening force in a first direction to the load simulation mechanism; the output end of the oil cylinder is connected with the load simulation mechanism, and thrust in a first direction or a second direction is applied to the load simulation mechanism during testing, and the second direction is opposite to the first direction. The oil cylinder is used as an actuating mechanism of the whole simulation device, is connected with the electro-hydraulic direct-drive product, is driven by the electro-hydraulic direct-drive product, generates thrust along a first direction or opposite to the first direction on the load simulation mechanism, simulates the load through the load simulation mechanism, and sets the balance force through the tensioning assembly; thereby meeting the requirements of electrohydraulic direct-drive product development and simulation test.
Description
Technical Field
The invention belongs to the technical field of mechanical testing, and particularly relates to a load simulation device.
Background
At present, two control modes are adopted for hydraulic control, one is data servo valve control, and the other is electrohydraulic direct drive (also called volume control). Compared with the traditional servo valve control, the electro-hydraulic direct drive has the characteristics of no need of a hydraulic station, small volume, strong pollution resistance, energy conservation and the like, and has wide application prospect in the servo field. However, at present, electrohydraulic direct drive belongs to a research and popularization stage in the industry, each development unit is a test prototype meeting the system requirement according to specific application occasions, and a complete universal simulation test device for testing the product performance of the electrohydraulic direct drive device is not available, so that the development cost and the development period are greatly increased.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a load simulation device for performance test of electrohydraulic direct-drive products, which has good versatility.
To achieve the above object and other related objects, the present invention provides the following technical solutions:
the load simulation device is used for testing an electrohydraulic direct-drive product and comprises a supporting mechanism, an oil cylinder, a load simulation mechanism and at least one group of tensioning assemblies for providing pretightening force, wherein the supporting mechanism provides support for the tensioning assemblies and the oil cylinder, the oil cylinder is provided with a connecting part for connecting the electrohydraulic direct-drive product, and the tensioning assemblies are connected with the load simulation mechanism and apply pretightening force in a first direction to the load simulation mechanism; the output end of the oil cylinder is connected with the load simulation mechanism, and thrust in a first direction or a second direction is applied to the load simulation mechanism during testing, and the second direction is opposite to the first direction.
By adopting the structure, the tensioning assembly generates a pretightening force in a first direction on the load simulation mechanism, the oil cylinder is used as an actuating mechanism of the whole simulation device and is connected with the electrohydraulic direct-drive product, and the electrohydraulic direct-drive product is used for driving, so that a thrust force along the first direction or opposite to the first direction is generated on the load simulation mechanism, the load is simulated through the load simulation mechanism in the simulation test process, and the balance force is set through the tensioning assembly; therefore, the requirements of electrohydraulic direct-drive product development and simulation test are met, products with different specifications can be adapted by changing the load size and the pretightening force, and the universality is good.
Optionally, the first direction and the second direction are in a horizontal direction; or the first direction and the second direction are in a vertical direction.
Optionally, the support mechanism includes a loading bracket, the tensioning assembly is mounted on one side of the loading bracket, and the load simulating mechanism is mounted on the other side of the loading bracket and opposite to the tensioning assembly.
Optionally, tensioning assembly includes tensioning rod, spring and spring holder, tensioning rod one end is connected with the spring holder, the other end of tensioning rod pass behind the loading support with load simulation mechanism is connected, the spring housing is outside the tensioning rod, the both ends of spring are supported respectively on loading support and spring holder.
Optionally, the tensioning rod is provided with the screw thread section near the one end of spring holder, the cover is equipped with adjusting nut on the screw thread section, adjusting nut supports in the spring holder one side that deviates from the spring.
Optionally, the load simulator further comprises a guide mechanism for guiding the load simulator mechanism, the guide mechanism maintaining the load simulator mechanism in the first or second direction when moving.
Optionally, the load simulation device is arranged horizontally or vertically, the guide mechanism is a guide sleeve arranged on the loading support, and the tensioning rod penetrates through the guide sleeve and can axially move relative to the guide sleeve.
Optionally, the load simulation device is horizontally arranged, the guiding mechanism comprises a sliding seat which is horizontally arranged, a guiding groove or a guiding rail is horizontally arranged on the sliding seat, and the load simulation mechanism is directly supported on the guiding groove or the guiding rail through rollers and can move along the guiding groove or the guiding rail.
Optionally, the supporting mechanism further comprises a base, and the loading bracket is directly installed on the base, or the loading bracket is installed on the base through a supporting frame.
Optionally, the tensioning assemblies are two groups, the oil cylinder is installed on the loading support and located on the same side of the loading support with the tensioning assemblies, and the oil cylinder is located between the two groups of tensioning assemblies.
Optionally, the output end of the oil cylinder is hinged with the load simulation mechanism.
Optionally, a connecting arm is arranged on the load simulation mechanism, and an output end of the oil cylinder penetrates through the loading support and is rotationally connected with the connecting arm through a rotating shaft.
Optionally, the load simulation mechanism comprises a counterweight seat and a counterweight block arranged on the counterweight seat, and the counterweight seat is respectively connected with the oil cylinder and the tensioning assembly.
Optionally, a stud and a lock nut for installing the counterweight are arranged on the counterweight seat.
The beneficial effects of the invention are as follows: the tensioning assembly generates a pretightening force in a first direction on the load simulation mechanism, the oil cylinder is used as an executing mechanism of the whole simulation device, is connected with the electrohydraulic direct-drive product and is driven by the electrohydraulic direct-drive product, so that a thrust in the first direction or opposite to the first direction is generated on the load simulation mechanism, the load is simulated through the load simulation mechanism in the simulation test process, and the balance force is set through the tensioning assembly; therefore, the requirements of electrohydraulic direct-drive product development and simulation test are met, products with different specifications can be adapted by changing the load size and the pretightening force, and the universality is good.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of another embodiment of the present invention (with the cylinder omitted);
fig. 3 is a top view of fig. 2 in accordance with the present invention.
Description of the part reference numerals
1-tensioning rod; 2-spring seat; 3-a spring; 4-loading the bracket; 5-a guide sleeve; 6-a counterweight seat; 7-balancing weight; 8-stud; 9-locking the nut; 10-an oil cylinder; 11-a base; 12-a slide; 13-a guide slot or rail; 14-a roller; 15-supporting frames; 16-a rotating shaft.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used in this specification for descriptive purposes only and not for purposes of limitation, and that the invention may be practiced without materially departing from the novel teachings and without departing from the scope of the invention.
The embodiment provides a load simulation device which is used for testing electrohydraulic direct-drive products and comprises a supporting mechanism, an oil cylinder 10, a load simulation mechanism and at least one group of tensioning assemblies for providing pretightening force, wherein the tensioning assemblies and the oil cylinder 10 are arranged on the supporting mechanism, and the tensioning assemblies are connected with the load simulation mechanism and apply pretightening force in a first direction to the load simulation mechanism; the oil cylinder 10 is provided with a connecting part (input end) for connecting an electrohydraulic direct-drive product, the output end of the oil cylinder 10 is connected with the load simulation mechanism, and when the electrohydraulic direct-drive product is tested, the oil cylinder 10 applies thrust in a first direction or a second direction to the load simulation mechanism, wherein the second direction is opposite to the first direction. That is, the cylinder 10 may apply a thrust force to the load simulator in the direction of the preload force, or may apply a thrust force in the direction opposite to the preload force.
The tensioning assembly generates a pretightening force in a first direction on the load simulation mechanism, the oil cylinder 10 is used as an executing mechanism of the whole simulation device, is connected with an electrohydraulic direct-drive product and is driven by the electrohydraulic direct-drive product, so that a thrust force along the first direction or opposite to the first direction is generated on the load simulation mechanism, the load is simulated through the load simulation mechanism in the simulation test process, and the balance force is set through the tensioning assembly; therefore, the requirements of electrohydraulic direct-drive product development and simulation test are met, products with different specifications can be adapted by changing the load size and the pretightening force, and the universality is good.
Specifically, the load simulation device is arranged vertically or horizontally, so that different test requirements can be met; that is, the first direction and the second direction are in the horizontal direction; or the first direction and the second direction are in a vertical direction.
Fig. 1 shows an example in which the load simulator is arranged vertically, and fig. 2 and 3 show an example in which the load simulator is arranged horizontally.
Example 1
As shown in fig. 1, the supporting mechanism comprises a base 11 and a loading bracket 4, the loading bracket 4 is installed on the base 11 through a supporting frame 15 and is supported with a certain vertical distance from the base 11, the tensioning assembly is installed on one side of the loading bracket 4, and the load simulating mechanism is installed on the other side of the loading bracket 4 and is opposite to the tensioning assembly. In this example, the load simulation mechanism is located above the loading bracket 4, the oil cylinder 10 and the tensioning assembly are installed on the loading bracket 4 and located below the loading bracket 4, the upper end of the oil cylinder 10 is an output end and is connected with the load simulation mechanism, and when loading, an upward or downward thrust is generated on the load simulation mechanism, and the upper end of the tensioning assembly is connected with the load simulation mechanism and continuously generates a downward acting force on the load simulation mechanism.
Specifically, the loading support 4 is supported by at least two groups of support frames 15, the upper and lower ends of the support frames 15 are respectively fixed with the loading support 4 and the base 11, and the support frames 15 can be composed of section steel and the like.
The tensioning assemblies are one to more groups, in this case two groups, and the cylinder 10 is located between the two groups of tensioning assemblies.
In one embodiment, the tensioning assembly comprises a tensioning rod 1, a spring 3 and a spring seat 2, one end of the tensioning rod 1 is connected with the spring seat 2, the other end of the tensioning rod 1 penetrates through a loading support 4 and then is connected with a load simulation mechanism, and two ends of the spring 3 respectively abut against the loading support 4 and the spring seat 2.
Specifically, the spring seat 2 is connected at the lower part of tensioning rod 1, and the upper end of tensioning rod 1 passes loading support 4 back and is connected with load simulation mechanism, and spring 3 coaxial arrangement is in tensioning rod 1 periphery, and the upper end of spring 3 supports on loading support 4, and the lower extreme of spring 3 supports on spring seat 2 is in compression state to produce decurrent pretightning force to load simulation device.
In order to facilitate the adjustment of the initial compression of the spring 3, the magnitude of the pre-tightening force is varied to accommodate different loads. The tensioning rod 1 is provided with the screw thread section near the one end of spring holder 2, and tensioning rod 1 lower part is the screw thread section in this example, and the cover is equipped with adjusting nut on the screw thread section, and adjusting nut supports at spring holder 2 lower surface to through adjusting nut adjusting spring 3's initial compression volume, adjustment balancing force (pretightning force) size.
In one embodiment, to ensure that the tensioning lever 1 and the load simulator can be kept in a vertical movement without a horizontal offset, a guide mechanism for the vertical guidance of the load simulator is provided on the loading carriage 4.
Specifically, the guide mechanism is a guide sleeve 5 mounted on the loading bracket 4, and the tensioning rod 1 passes through the guide sleeve 5, is in clearance fit with the guide sleeve 5, and can move up and down relative to the guide sleeve 5. The guide sleeve 5 is arranged on the upper surface of the loading bracket 4 or vertically penetrates through the loading bracket 4 and is welded or connected with the loading bracket 4 in other fastening modes.
In one embodiment, to ensure a certain degree of freedom of movement between the output end of the cylinder 10 and the load simulator, the output end of the cylinder 10 is hinged to the load simulator.
In this example, the oil cylinder 10 is installed below the loading bracket 4, and is fixed with the loading bracket 4 by bolts or the like; the lower part of the load simulation mechanism is provided with a connecting arm, and the output end of the oil cylinder 10 passes through the loading bracket 4 upwards and is rotationally connected with the connecting arm through a rotating shaft 16.
In one embodiment, the load simulation mechanism comprises a counterweight seat 6 and a counterweight 7 arranged on the counterweight seat 6, and the counterweight seat 6 is respectively connected with the output end of the oil cylinder 10 and the upper end of the tensioning rod 1.
Wherein, be provided with double-screw bolt 8 and lock nut 9 that are used for installing balancing weight 7 on the counter weight seat 6, place on the counter weight seat 6 after the balancing weight 7, compress tightly through lock nut 9. Thus, the weight can be increased or decreased according to the size of the required load. The balance weight has various quality specifications and is matched according to the size of the simulated load.
Example 2
Fig. 2 and 3 show examples of a horizontal arrangement of the load simulator, which differs from embodiment 1 in that: in the embodiment, the loading bracket 4 is directly arranged on the base 11, the tensioning assembly and the oil cylinder 10 are positioned at the left side of the loading bracket 4, and the load simulation mechanism is positioned at the right side of the loading bracket 4; the tensioning assembly generates horizontal left pretightening force on the load simulation mechanism, and during testing, the oil cylinder 10 generates left or right thrust on the load simulation mechanism.
The load simulator in embodiment 1 is supported by the tensioner assembly and the cylinder 10; in this example, in order to support and guide the load simulation device, a sliding seat 12 is horizontally arranged on a base 11, a guide groove or a guide rail 13 is horizontally arranged on the sliding seat 12 along the left-right direction, and the load simulation mechanism is directly supported on the guide groove or the guide rail 13 or is supported on the guide groove or the guide rail 13 through a roller 14; so that the load simulator can move horizontally along the guide groove or rail 13, thereby realizing the movement guidance of the load simulator and the tension rod 1.
The rest of the structure is the same as the embodiment, except that the vertical state is changed to the horizontal state. In this example, the loading bracket 4 may be provided with a guide sleeve 5 for horizontal guiding. In other embodiments, the tensioning rod 1 or the oil cylinder 10 can be further provided with a bracket for vertical support.
In the working process, the specification of the oil cylinder 10 is selected according to the actual load, the actual load is met by adjusting the weight of the counterweight, and the balance force is adjusted by adjusting the initial compression amount of the spring. The actual spring rate is selected to be met according to the actual situation. The springs have various length specifications and various stiffness specifications, and are selected according to load requirements during simulation test.
The invention can meet the requirements of electrohydraulic direct-drive product development and simulation test, saves development cost, shortens development period and has good universality.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. The utility model provides a load analogue means for the test of electrohydraulic direct drive product, its characterized in that: the electro-hydraulic direct-drive product tensioning device comprises a supporting mechanism, an oil cylinder, a load simulation mechanism and at least one group of tensioning assemblies for providing pretightening force, wherein the supporting mechanism provides support for the tensioning assemblies and the oil cylinder, the oil cylinder is provided with a connecting part for connecting an electro-hydraulic direct-drive product, and the tensioning assemblies are connected with the load simulation mechanism and apply pretightening force in a first direction to the load simulation mechanism; the output end of the oil cylinder is connected with the load simulation mechanism, and thrust in a first direction or a second direction is applied to the load simulation mechanism during testing, and the second direction is opposite to the first direction; the first direction and the second direction are in a horizontal direction; or the first direction and the second direction are in a vertical direction; the support mechanism comprises a loading bracket, the tensioning assembly is arranged on one side of the loading bracket, and the load simulation mechanism is arranged on the other side of the loading bracket and opposite to the tensioning assembly; the tensioning assembly comprises a tensioning rod, a spring and a spring seat, one end of the tensioning rod is connected with the spring seat, the other end of the tensioning rod penetrates through the loading support and then is connected with the load simulation mechanism, the spring is sleeved outside the tensioning rod, and two ends of the spring respectively prop against the loading support and the spring seat; the load simulation mechanism comprises a counterweight seat and a counterweight block arranged on the counterweight seat, and the counterweight seat is respectively connected with the oil cylinder and the tensioning assembly.
2. The load simulator of claim 1, wherein: the tensioning rod is characterized in that a threaded section is arranged at one end, close to the spring seat, of the tensioning rod, an adjusting nut is sleeved on the threaded section, and the adjusting nut abuts against one side, away from the spring, of the spring seat.
3. The load simulator of claim 1, wherein: the load simulator also includes a guide mechanism for guiding the load simulator mechanism, the guide mechanism maintaining the load simulator mechanism in either the first or second orientation when in motion.
4. A load simulator according to claim 3, wherein: the load simulation device is horizontally or vertically arranged, the guide mechanism is a guide sleeve arranged on the loading support, and the tensioning rod penetrates through the guide sleeve and can axially move relative to the guide sleeve.
5. A load simulator according to claim 3, wherein: the load simulation device is horizontally arranged, the guide mechanism comprises a sliding seat which is horizontally arranged, a guide groove or a guide rail is horizontally arranged on the sliding seat, and the load simulation mechanism is directly supported on the guide groove or the guide rail through rollers and can move along the guide groove or the guide rail.
6. The load simulator of claim 1, wherein: the supporting mechanism further comprises a base, and the loading support is directly installed on the base or installed on the base through a supporting frame.
7. The load simulator of claim 1, wherein: the tensioning assemblies are two groups, the oil cylinder is arranged on the loading support and located on the same side of the loading support as the tensioning assemblies, and the oil cylinder is located between the two groups of tensioning assemblies.
8. The load simulator of any of claims 1-7, wherein: the output end of the oil cylinder is hinged with the load simulation mechanism.
9. The load simulator of claim 8 wherein: the load simulation mechanism is provided with a connecting arm, and the output end of the oil cylinder penetrates through the loading support and is rotationally connected with the connecting arm through a rotating shaft.
10. The load simulator of any of claims 1-7, wherein: the counterweight seat is provided with a stud and a lock nut for installing a counterweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728519.4A CN110346165B (en) | 2019-08-08 | 2019-08-08 | Load simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728519.4A CN110346165B (en) | 2019-08-08 | 2019-08-08 | Load simulator |
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| CN110346165A CN110346165A (en) | 2019-10-18 |
| CN110346165B true CN110346165B (en) | 2024-03-12 |
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| CN201910728519.4A Active CN110346165B (en) | 2019-08-08 | 2019-08-08 | Load simulator |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2669168Y (en) * | 2003-09-10 | 2005-01-05 | 江苏大学 | Load-variable testing table loading device of automobile steering device |
| CN2684177Y (en) * | 2004-03-25 | 2005-03-09 | 江苏大学 | Automobile steering device assembly test bench charger with adjustable loading rigidity and damp |
| RU48319U1 (en) * | 2005-04-08 | 2005-10-10 | Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" | LOAD LOWERING DEVICE |
| CN201302606Y (en) * | 2008-10-31 | 2009-09-02 | 北京理工大学 | Complex load condition simulation and performance testing device of servo system |
| KR20100059118A (en) * | 2008-11-26 | 2010-06-04 | 한국건설기술연구원 | Reaction spring apparatus to simulate ground reaction against pile |
| CN103135512A (en) * | 2011-12-02 | 2013-06-05 | 中铁隧道集团有限公司 | Shield electro-hydraulic control system comprehensive test platform |
| CN207961155U (en) * | 2018-02-27 | 2018-10-12 | 龙工(福建)液压有限公司 | Hydraulic cylinder fictitious load buffer test device |
| CN208345685U (en) * | 2018-06-20 | 2019-01-08 | 中国科学院测量与地球物理研究所 | A kind of mechanical lift device for low force test platform |
| CN109283002A (en) * | 2018-12-09 | 2019-01-29 | 杭州中油智井装备科技有限公司 | A kind of pump load simulation test device |
| CN109443817A (en) * | 2018-12-12 | 2019-03-08 | 西南交通大学 | Loading unit and loading device |
| CN109556842A (en) * | 2018-10-31 | 2019-04-02 | 北京动力机械研究所 | A kind of adjustable load on spring simulator of load |
| CN210221519U (en) * | 2019-08-08 | 2020-03-31 | 中冶赛迪技术研究中心有限公司 | Load simulator |
-
2019
- 2019-08-08 CN CN201910728519.4A patent/CN110346165B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2669168Y (en) * | 2003-09-10 | 2005-01-05 | 江苏大学 | Load-variable testing table loading device of automobile steering device |
| CN2684177Y (en) * | 2004-03-25 | 2005-03-09 | 江苏大学 | Automobile steering device assembly test bench charger with adjustable loading rigidity and damp |
| RU48319U1 (en) * | 2005-04-08 | 2005-10-10 | Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" | LOAD LOWERING DEVICE |
| CN201302606Y (en) * | 2008-10-31 | 2009-09-02 | 北京理工大学 | Complex load condition simulation and performance testing device of servo system |
| KR20100059118A (en) * | 2008-11-26 | 2010-06-04 | 한국건설기술연구원 | Reaction spring apparatus to simulate ground reaction against pile |
| CN103135512A (en) * | 2011-12-02 | 2013-06-05 | 中铁隧道集团有限公司 | Shield electro-hydraulic control system comprehensive test platform |
| CN207961155U (en) * | 2018-02-27 | 2018-10-12 | 龙工(福建)液压有限公司 | Hydraulic cylinder fictitious load buffer test device |
| CN208345685U (en) * | 2018-06-20 | 2019-01-08 | 中国科学院测量与地球物理研究所 | A kind of mechanical lift device for low force test platform |
| CN109556842A (en) * | 2018-10-31 | 2019-04-02 | 北京动力机械研究所 | A kind of adjustable load on spring simulator of load |
| CN109283002A (en) * | 2018-12-09 | 2019-01-29 | 杭州中油智井装备科技有限公司 | A kind of pump load simulation test device |
| CN109443817A (en) * | 2018-12-12 | 2019-03-08 | 西南交通大学 | Loading unit and loading device |
| CN210221519U (en) * | 2019-08-08 | 2020-03-31 | 中冶赛迪技术研究中心有限公司 | Load simulator |
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