CN115266151A - Agricultural machinery wheel test bench - Google Patents
Agricultural machinery wheel test bench Download PDFInfo
- Publication number
- CN115266151A CN115266151A CN202211186093.2A CN202211186093A CN115266151A CN 115266151 A CN115266151 A CN 115266151A CN 202211186093 A CN202211186093 A CN 202211186093A CN 115266151 A CN115266151 A CN 115266151A
- Authority
- CN
- China
- Prior art keywords
- test
- soil
- platform
- lifting
- box
- 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
Images
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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/013—Wheels
-
- 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
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the field of performance testing of agricultural machinery wheels, in particular to an agricultural machinery wheel test bed which comprises a platform and a test vehicle, wherein the platform is provided with a slide rail with a slide block bracket, the slide block bracket is provided with a vertical guide post, the test vehicle is provided with a guide hole with the diameter larger than that of the guide post, and the test vehicle can be arranged on the slide block bracket in a vertically sliding manner. The platform is provided with a soil groove filled with soil, two test runways are transversely arranged in the soil groove, and a plurality of terrain adjusting devices used for changing road conditions on the surface of the soil are arranged in each test runway. The invention can conveniently adjust the ground convex state through the terrain adjusting device so as to simulate uneven road conditions of the field to test the wheel slip rate of the agricultural machine under the road conditions and observe the bounce condition of the ground plough when the test vehicle bumps.
Description
Technical Field
The invention relates to the field of performance tests of wheels of agricultural machinery, in particular to a wheel test bed of an agricultural machinery.
Background
The agricultural machinery test bench (namely the soil box) is the main equipment for agricultural machinery performance test, and the soil box is not influenced by the external environment and can adjust the test environment as required. The slip ratio of wheels of different materials, different tire pressures, different shapes and sizes on soil of different materials can be simulated through the soil grooves, and the jolting condition of tools such as a vehicle-mounted plowing machine during operation can be simulated.
However, when the existing soil tank test is used for simulating a rugged road surface, the bulge is mainly made manually, a soil pile needs to be placed on the soil surface, then the soil pile is compacted into a bulge shape, the operation is troublesome, and the difficulty of compacting the soil pile with a small area into the bulge is high. There is also a method of burying metal or stone blocks in the soil tank, which is effective but troublesome in taking and putting the metal or stone blocks back and forth.
Disclosure of Invention
Aiming at the defects of the prior art, the invention designs the agricultural machine wheel test bed which is convenient to form a road surface convex to simulate the bumpy road condition of a vehicle, so as to solve the problem.
The technical scheme adopted by the invention for solving the technical problem is as follows: the agricultural machine wheel test bed comprises a platform and a test vehicle, wherein a soil tank filled with soil is arranged on the top surface of the platform, and a supporting base is arranged at the bottom of the platform; the platform is provided with a slide rail, a slide block bracket is arranged on the slide rail, and the slide block bracket is connected with a test vehicle; the agricultural machine wheel test bed further comprises a terrain adjusting device, two test runways are transversely arranged in the soil groove, a plurality of lifting grooves with openings at the tops are arranged in the test runways at equal intervals, lifting blocks are arranged in the lifting grooves in a lifting mode, a plurality of equipment drawers which correspond to the lifting grooves one by one are respectively arranged on the front side and the rear side of the platform, and each equipment drawer is provided with a set of terrain adjusting device; the terrain adjusting device comprises a lifting mechanism and an adjusting block, the adjusting block is detachably arranged at the top of the lifting mechanism, a top post is arranged at the top of the adjusting block, a through hole for the top post to pass through is formed in the bottom of the lifting groove, and a locking mechanism is arranged between the lifting block and the top post;
the testing vehicle is characterized in that vertical guide posts are arranged on the sliding block support, and guide holes for the guide posts to penetrate through are formed in the testing vehicle.
Further, the agricultural machinery wheel test bed also comprises a ground plough test device; the right end of the test vehicle is hinged with the ground plough, and a propping mechanism is arranged between the test vehicle and the ground plough; the ground plough testing device comprises a bearing box, a testing box, a telescopic rod and an infrared distance meter, wherein the bearing box is fixedly arranged on a sliding block support, the testing box can slide left and right in the bearing box, the telescopic rod can be telescopically arranged at the bottom of the testing box, the infrared distance meter above the telescopic rod is arranged at the top of the testing box, and the bottom of the telescopic rod is hinged to the ground plough.
Further, the bottom of the test box is provided with rollers.
Further, locking mechanism includes spring bolt, spring trigger lever and acts as go-between, the bottom of elevator sets up the spliced pole, the top of fore-set up with spliced pole complex connecting hole, transversely set up spring bolt in the spliced pole, set up in the connecting hole with spring bolt complex spacing groove, spring trigger lever is located one side of spliced pole, spring trigger lever is through acting as go-between connection spring bolt.
Preferably, the lifting mechanism comprises hydraulic cylinders, and all the hydraulic cylinders are connected with the main hydraulic pump through hydraulic oil pipes.
Furthermore, a weight box for loading a balancing weight is arranged at the top of the test vehicle.
Furthermore, the top of guide post sets up the screw thread end, can dismantle the lock sleeve that sets up the diameter and the guiding hole equals on the screw thread end.
Furthermore, the diameter of the threaded end is smaller than that of the guide post, and the threaded end is detachably provided with a protective sleeve with the outer diameter being the same as that of the guide post.
Furthermore, the left end and the right end of the platform are respectively provided with marks corresponding to the two test runways.
The invention has the beneficial effects that: compared with the prior art, the ground plow test device can be used for testing various conventional agricultural machines, and can also be used for conveniently adjusting the ground convex state through the terrain adjusting device so as to simulate uneven road conditions of a field to test the wheel slip rate of the agricultural machine under the road conditions and observe the jumping condition of the ground plow when the test vehicle bumps.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of detail A in FIG. 1;
FIG. 3 is a top view of the platform;
FIG. 4 is an elevational, cross-sectional view of the present invention;
FIG. 5 is an enlarged view of detail B of FIG. 4;
FIG. 6 is a schematic structural view of a portion of the structure of the present invention;
FIG. 7 is a partial cross-sectional view of a portion of the structure of the present invention;
FIG. 8 is a sectional view of the structure of the guide post and the protective sheath;
fig. 9 is a structural section view of the guide post and the locking sleeve.
In the figure: platform 1, support base 11, slide rail 12, sign 13, lifting groove 14, lifting block 15, connecting column 151, limiting groove 152, equipment drawer 16, through-hole 17, test car 2, guide hole 21, ground plough 22, opening mechanism 23, weight box 24, soil box 3, soil 31, slider support 4, guide column 41, threaded end 411, lock sleeve 42, protective sheath 43, topography adjusting device 5, lifting mechanism 51, adjusting block 52, top column 521, connecting hole 522, spring bolt 61, spring trigger lever 62, bracing wire 63, wire walking hole 631, guide wheel 64, ground plough testing device 7, bearing box 71, test box 72, roller 721, telescopic link 73, infrared range finder 75.
Detailed Description
For a better understanding of the present invention, embodiments of the present invention are explained in detail below with reference to fig. 1 to 9.
It should be noted that the directions "front, back, left, right, up, down" described herein are based on the directions "front, back, left, right, up, down" in fig. 1.
The agricultural machinery wheel test bed comprises a platform 1 and a test vehicle 2, wherein a soil groove 3 filled with soil 31 is arranged on the top surface of the platform 1, and a supporting base 11 is arranged at the bottom of the platform 1. The left side and the right side of the platform 1 are provided with slide rails 12, the slide rails 12 are provided with slide block supports 4, and a terrain adjusting device 5 is arranged below the platform 1. Two test runways are transversely arranged in the soil tank 3, marks 13 corresponding to the two test runways are respectively arranged at the left end and the right end of the platform 1, and the marks 13 can be marking lines or raised platforms and are used for indicating the positions of the two test runways. A plurality of open-top's lift groove 14 are set up to equidistant in the test runway, and the liftable sets up lifter 15 in lift groove 14, and platform 1's front and back both sides set up a plurality of equipment drawers 16 with lift groove 14 one-to-one respectively, set up one set of topography adjusting device 5 in every equipment drawer 16, and the bottom of topography adjusting device 5 is fixed in equipment drawer 16. In order to avoid that the soil 31 enters the lifting groove 14 to affect the lifting of the lifting blocks 15 in the long-term use process, the top of each lifting block 15 is covered with a layer of dustproof cloth.
The slider bracket 4 is provided with a vertical guide post 41, the test vehicle 2 is provided with a guide hole 21 matched with the guide post 41, and the test vehicle 2 can be arranged on the slider bracket 4 in a vertical sliding manner. The diameter of the guide hole 21 is larger than that of the guide column 41, and a gap is reserved between the guide hole and the guide column, so that the test vehicle 2 can bump on an uneven road surface.
The terrain adjusting device 5 comprises a lifting mechanism 51 and an adjusting block 52, wherein the lifting mechanism 51 adopts hydraulic cylinders, and all the hydraulic cylinders are connected with a main hydraulic pump through hydraulic oil pipes. The bottom of the hydraulic cylinder is fixed in the equipment drawer 16. The top of the lifting end of the lifting mechanism 51 is detachably provided with an adjusting block 52 in a threaded connection mode, the top of the adjusting block 52 is provided with a top column 521, the bottom of the lifting groove 14 is provided with a through hole 17 through which the top column 521 passes, and a locking mechanism for locking is arranged between the lifting block 15 and the top column 521. When the terrain of the soil surface needs to be changed to simulate the use environment, all the hydraulic cylinders are controlled by the main hydraulic pump, so that all the hydraulic cylinders are lifted synchronously. After the hydraulic cylinder is opened, all the adjusting blocks 52 jack the lifting block 15 up from the lifting groove 14 through the top column 521. Due to the lifting of the lifting block 15, the soil 31 on the lifting block 15 will be synchronously jacked up, thereby changing the topography of the soil 31 in the soil tank 3.
The adjusting blocks 52 comprise various specifications and models with different heights, and different protruding heights of soil are realized by replacing the adjusting blocks 52 with different heights after the device drawers corresponding to the lifting blocks 15 are pulled out.
Of course, the terrain adjustment apparatus of the present invention may also be implemented using manual hydraulic jacks or scissor jacks, such that the elevation of the soil 31 may be controlled directly by controlling the elevation of a single hydraulic jack or scissor jack without replacing the adjustment blocks 52 of different heights.
As shown in fig. 4 and 5, the locking mechanism includes a spring bolt 61, a spring trigger rod 62 and a pull wire 63, a connecting column 151 is disposed at the bottom of the lifting block 15, a connecting hole 522 matched with the connecting column 151 is disposed at the top of the top column 521, a transverse spring bolt 61 is disposed in the connecting column 151, and the spring bolt 61 includes a bolt and a return spring behind the bolt. An annular limiting groove 152 is arranged in the connecting hole 522, a spring trigger rod 62 extending out of the bottom is arranged in the connecting column 151, and the spring trigger rod 62 comprises a trigger rod and a return spring at the upper end of the trigger rod. A wire hole 631 is formed in the connecting column 151, a pull wire 63 connected with the spring trigger rod 62 and the inner end of the spring bolt 61 is arranged in the wire hole 631, and the pull wire 63 is reversed through a guide wheel 64. The bolt end of the spring bolt 61 is provided with an inclined surface or an arc surface at the bottom. When the connection post 151 ascends to contact and align with the connection hole 522, the spring bolt 61 in the connection post 151 is inserted into the limit groove 152, so that the top post 521 is locked with the lifting block 15 and can move synchronously with the lifting of the lifting mechanism 51. When the lifting block 15 descends to the bottom of the lifting groove 14 to contract the spring trigger rod 62, the spring trigger rod 62 pulls the pull wire 63 to pull the spring bolt 61 to contract, so that the locking state of the connecting column 151 and the connecting hole 522 is released, the adjusting block 52 is separated from the lifting block 15, and the equipment drawer 16 can be pulled out in the state to replace the adjusting block 52 with different heights.
In addition, the invention also designs a test device 7 of the plough, which is used for the bumping conditions of the plough tool when different wheels work on bumpy roads. Specifically, the right end of the test vehicle 2 is hinged with the ground plough 22, a spreading mechanism 23 is arranged between the test vehicle 2 and the ground plough 22, and the spreading and retracting of the ground plough 22 can be realized through the extension and retraction of the spreading mechanism 23. The ground plow test device 7 includes: the device comprises a bearing box 71, a test box 72, an expansion link 73 and an infrared distance meter 75, wherein the bearing box 71 is fixedly arranged on a slide block bracket 4, the test box 72 is arranged in the bearing box 71 in a left-right sliding mode, and rollers 721 are arranged on the left side and the right side of the bottom of the test box 72 for smooth sliding. The top of the test box 72 rests on top of the carrier box 71. The bottom of the test box 72 is telescopically provided with an expansion link 73, the test box 72 is provided with an infrared distance meter 75 positioned at the top of the expansion link 73, and the bottom of the expansion link 73 is hinged with the ground plough 22. The bottom of the bearing box 71 is provided with a strip-shaped through hole for the telescopic rod 73 to slide left and right. When the ground plough 22 jumps along with the change of the terrain, the telescopic rod 73 hinged with the ground plough 22 slides up and down in the test box 72, the test box 72 also slides left and right in the bearing box 71, the infrared distance meter 75 sends the data of the ascending and descending amount of the top of the telescopic rod to the upper computer, and a curve chart of the walking displacement and the up-and-down bumping displacement is displayed on the interface of the upper computer to reflect the approximate bumping condition of the ground plough. The infrared distance measuring instrument 75 with RS232, RS485 or USB interfaces is adopted and can be directly connected with a computer (an upper computer). Those skilled in the art can replace the infrared distance measuring instrument with other types of existing distance measuring devices such as laser distance measuring instruments, ultrasonic distance measuring instruments and the like, and the devices can be directly connected with a computer through RS232, RS485 or USB interfaces. If the Dadawei SW-LDS50A distance measuring instrument module with the RS485 interface is adopted, the distance measuring instrument module is directly connected with the RS485 interface of the computer host through a data line.
In order to realize the self-weight adjustment of the test vehicle 2, a weight box 24 for loading a counterweight is arranged at the top of the test vehicle 2.
When the invention is used for other tests without simulating the pitching condition, in order to prevent the radial shaking and pitching of the test vehicle, the invention arranges the locking sleeve 42 on the guide column 41. The upper portion of guide post 41 sets up threaded end 411, sets up the internal thread that cooperates with threaded end 411 in the lock sleeve 42, and the lock sleeve 42 outer lane is the same with guiding hole 21 internal diameter, both sliding fit. When the locking sleeve 42 is not used, in order to protect the external thread of the threaded end 411, a protective sleeve 43 is designed, an internal thread matched with the external thread on the threaded end 411 is arranged in the protective sleeve 43, and the outer diameter of the protective sleeve 43 is the same as that of the guide column 41.
When the soil lifting device is used for adjusting the ground bulge, soil in the soil groove is compacted, and then the soil is jacked up through the terrain adjusting device. In the invention, during the slip ratio test, the soil 31 in the soil tank 3 is changed from a plane to a concave-convex surface through the lifting of the terrain adjusting device 5, a field pothole road surface is simulated, and the test vehicle 2 is driven to run for test. When the bounce condition and the stability of the plough 22 on a bumpy road surface need to be tested, the change of the soil penetration depth of the plough 22 can be generally judged according to the lifting amplitude change of the telescopic rod 73 fed back by the infrared distance measuring instrument 75, so that the influence of uneven road surfaces or wheels of different specifications on the smooth running of the plough 22 can be generally known.
Claims (9)
1. The agricultural machine wheel test bed comprises a platform and a test vehicle, wherein a soil tank filled with soil is arranged on the top surface of the platform, and a supporting base is arranged at the bottom of the platform; the platform is provided with a slide rail, a slide block bracket is arranged on the slide rail, and the slide block bracket is connected with a test vehicle; the method is characterized in that: the soil testing device comprises a soil tank, a plurality of lifting grooves with openings at the tops, a plurality of lifting blocks, a plurality of equipment drawers and a topographic adjusting device, wherein the soil tank is internally and transversely provided with two testing tracks; the terrain adjusting device comprises a lifting mechanism and an adjusting block, the adjusting block is detachably arranged at the top of the lifting mechanism, a top post is arranged at the top of the adjusting block, a through hole for the top post to pass through is formed in the bottom of the lifting groove, and a locking mechanism is arranged between the lifting block and the top post;
the testing vehicle is characterized in that vertical guide posts are arranged on the sliding block support, and guide holes for the guide posts to penetrate through are formed in the testing vehicle.
2. An agricultural vehicle wheel test stand as defined in claim 1, wherein: it also includes a plough test device; the right end of the test vehicle is hinged with the ground plough, and a spreading mechanism is arranged between the test vehicle and the ground plough; the ground plough testing device comprises a bearing box, a testing box, a telescopic rod and an infrared distance meter, wherein the bearing box is fixedly arranged on a sliding block support, the testing box can slide left and right in the bearing box, the telescopic rod can be telescopically arranged at the bottom of the testing box, the infrared distance meter above the telescopic rod is arranged at the top of the testing box, and the bottom of the telescopic rod is hinged to the ground plough.
3. An agricultural vehicle wheel test stand as defined in claim 2, wherein: and the bottom of the test box is provided with a roller.
4. An agricultural vehicle wheel test stand as defined in claim 1, wherein: locking mechanism includes spring bolt, spring trigger bar and acts as go-between, the bottom of elevator sets up the spliced pole, the top of fore-set up with spliced pole complex connecting hole, transversely set up the spring bolt in the spliced pole, set up in the connecting hole with spring bolt complex spacing groove, the spring trigger bar is located one side of spliced pole, the spring trigger bar is through acting as go-between connection spring bolt.
5. An agricultural vehicle wheel test stand as defined in claim 1, wherein: the lifting mechanism comprises hydraulic cylinders, and all the hydraulic cylinders are connected with the main hydraulic pump through hydraulic oil pipes.
6. The agricultural vehicle wheel test stand of claim 1, wherein: and the top of the test vehicle is provided with a weight box for loading a balancing weight.
7. The agricultural vehicle wheel test stand of claim 1, wherein: the top of guide post sets up the screw thread end, the last lock sleeve that sets up the diameter and the guiding hole equals of dismantling of screw thread end.
8. An agricultural vehicle wheel test stand as defined in claim 7, wherein: the diameter of the threaded end is smaller than that of the guide post, and the threaded end is detachably provided with a protective sleeve with the same outer diameter as that of the guide post.
9. An agricultural vehicle wheel test stand as defined in claim 1, wherein: and the left end and the right end of the platform are respectively provided with marks corresponding to the two test runways.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211186093.2A CN115266151B (en) | 2022-09-28 | 2022-09-28 | Agricultural machinery wheel test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211186093.2A CN115266151B (en) | 2022-09-28 | 2022-09-28 | Agricultural machinery wheel test bench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115266151A true CN115266151A (en) | 2022-11-01 |
| CN115266151B CN115266151B (en) | 2023-02-07 |
Family
ID=83757769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211186093.2A Active CN115266151B (en) | 2022-09-28 | 2022-09-28 | Agricultural machinery wheel test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115266151B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005525549A (en) * | 2002-05-14 | 2005-08-25 | ベーイーアー | 6-axis road simulator test system |
| CN101558699A (en) * | 2009-05-22 | 2009-10-21 | 宁波市德霖机械有限公司 | Heightening and locking mechanism of rotavator |
| US20130199284A1 (en) * | 2010-05-19 | 2013-08-08 | Illinois Tool Works Inc. | Road simulation test stand |
| CN105388031A (en) * | 2015-12-08 | 2016-03-09 | 南京农业大学 | Soil bin test trolley |
| CN106153358A (en) * | 2015-03-27 | 2016-11-23 | 胡卫建 | Topographic change and restructural comprehensive test device and method of testing |
| CN109406172A (en) * | 2018-11-28 | 2019-03-01 | 华南理工大学 | A kind of soil bin test device suitable for wheels travel performance test |
| CN109708899A (en) * | 2018-12-19 | 2019-05-03 | 北京卫星环境工程研究所 | Variable-angle ramp for Mars surface simulation environment |
| JP2020159723A (en) * | 2019-03-25 | 2020-10-01 | 公益財団法人鉄道総合技術研究所 | Track testing device |
| CN112444405A (en) * | 2019-08-30 | 2021-03-05 | 大连民族大学 | Simulation device and device group capable of adjusting and controlling degree of unevenness of road surface |
| CN213335975U (en) * | 2020-09-18 | 2021-06-01 | 厦门微控科技有限公司 | Telescopic device for measuring linear displacement |
| CN214179775U (en) * | 2020-07-13 | 2021-09-14 | 马敏 | Engineering cost display device |
-
2022
- 2022-09-28 CN CN202211186093.2A patent/CN115266151B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005525549A (en) * | 2002-05-14 | 2005-08-25 | ベーイーアー | 6-axis road simulator test system |
| CN101558699A (en) * | 2009-05-22 | 2009-10-21 | 宁波市德霖机械有限公司 | Heightening and locking mechanism of rotavator |
| US20130199284A1 (en) * | 2010-05-19 | 2013-08-08 | Illinois Tool Works Inc. | Road simulation test stand |
| CN106153358A (en) * | 2015-03-27 | 2016-11-23 | 胡卫建 | Topographic change and restructural comprehensive test device and method of testing |
| CN105388031A (en) * | 2015-12-08 | 2016-03-09 | 南京农业大学 | Soil bin test trolley |
| CN109406172A (en) * | 2018-11-28 | 2019-03-01 | 华南理工大学 | A kind of soil bin test device suitable for wheels travel performance test |
| CN109708899A (en) * | 2018-12-19 | 2019-05-03 | 北京卫星环境工程研究所 | Variable-angle ramp for Mars surface simulation environment |
| JP2020159723A (en) * | 2019-03-25 | 2020-10-01 | 公益財団法人鉄道総合技術研究所 | Track testing device |
| CN112444405A (en) * | 2019-08-30 | 2021-03-05 | 大连民族大学 | Simulation device and device group capable of adjusting and controlling degree of unevenness of road surface |
| CN214179775U (en) * | 2020-07-13 | 2021-09-14 | 马敏 | Engineering cost display device |
| CN213335975U (en) * | 2020-09-18 | 2021-06-01 | 厦门微控科技有限公司 | Telescopic device for measuring linear displacement |
Non-Patent Citations (2)
| Title |
|---|
| 曾剑辉 等: "微耕机车轮在水田壤中的牵引性能试验", 《江西农业大学学报》 * |
| 李军 等: "多功能土槽试验台的结构方案设计", 《农业装备与车辆工程》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115266151B (en) | 2023-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109483204B (en) | Mine hydraulic support pin shaft pulling-out device | |
| CN115266151B (en) | Agricultural machinery wheel test bench | |
| CN219058482U (en) | Temporary guardrail anchor bolt drawing equipment for expressway | |
| CN213476561U (en) | Bituminous paving crack detection device | |
| CN109706963A (en) | The installation of piping lane box type telescopic internal model, unloading, conveying intelligent platform | |
| CN109098217A (en) | A kind of plug stake of offshore self-elevating drilling platform influences development test device and method to neighbouring shoe | |
| CN212077929U (en) | Intelligent pile frame | |
| CN115288608A (en) | Multifunctional territorial space planning terrain exploration and measurement vehicle with drilling machine | |
| CN110284835B (en) | Movable engineering driller | |
| CA2589723A1 (en) | Drop mass soil compaction apparatus | |
| CN210216388U (en) | Crawler-type drainage plate clamping, sealing and anti-blocking spiral plate inserting machine | |
| CN116609086A (en) | Agricultural machinery wheel performance test device | |
| CN220339368U (en) | Roadbed leveling device | |
| CN205955644U (en) | Workover machine is pressed in semi -mounted stand alone type area | |
| WO1985004918A1 (en) | A method and a device for establishing mounting holes in the ground, in particular for markers in roads | |
| CN221343888U (en) | Crawler-type lift truck | |
| CN218404983U (en) | Tamping device for construction of geological field | |
| CN219045148U (en) | Movable foundation bearing capacity detection equipment | |
| CN221595254U (en) | Tunnel advanced geological forecast radar auxiliary device | |
| CN204126283U (en) | Portable steel stranded wire penetrating adapter cutting chassis | |
| CN219298169U (en) | Highway subgrade level tester for road construction | |
| CN218059823U (en) | Detection device for high-modulus asphalt paving quality | |
| CN112414816B (en) | Electric compaction device | |
| CN221398583U (en) | Device for quickly leveling paver | |
| CN212109910U (en) | Quick detection device of wave form roof beam guardrail crossbeam central height |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |