CN114459932B - Multifunctional friction wear machine - Google Patents
Multifunctional friction wear machine Download PDFInfo
- Publication number
- CN114459932B CN114459932B CN202111681251.7A CN202111681251A CN114459932B CN 114459932 B CN114459932 B CN 114459932B CN 202111681251 A CN202111681251 A CN 202111681251A CN 114459932 B CN114459932 B CN 114459932B
- Authority
- CN
- China
- Prior art keywords
- indexing
- lifting
- rack
- main shaft
- unit
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the technical field of wear machines and discloses a multifunctional friction wear machine which comprises a rack, a main shaft, a friction force sensor, a lifting support, a lifting driving unit, a pair grinding wheel, an electrochemical unit and a spraying unit, wherein the main shaft is arranged on the rack; the main shaft horizontally and rotatably penetrates through the frame; one end of the main shaft is connected with a rotating motor, and the other end of the main shaft is connected with a fixing piece for fixing a sample; the rotating motor is arranged on the frame; the friction force sensor is arranged at one end of the main shaft close to the rotating motor; the lifting bracket is arranged on the rack in a sliding manner; the lifting driving unit is arranged on the rack and connected with the lifting bracket; the pair of grinding wheels are connected with the lifting bracket and are positioned right above the fixing piece; the electrochemical unit is arranged on the frame; the spraying unit is arranged on the frame. The friction test device can simulate friction tests of wear-resistant materials in various environments, and is simple and compact in structure and multifunctional.
Description
Technical Field
The invention relates to the technical field of wear machines, in particular to a multifunctional friction wear machine.
Background
The frictional wear performance is a key technical index of the wear-resistant material and is generally evaluated by a frictional wear tester. The conventional friction wear testing machine can only realize the friction wear performance evaluation of air or vacuum environment at different environmental temperatures.
In fact, the wear-resistant material is not only affected by temperature factors but also affected by the atmosphere of the use environment, such as neutrality or acidity, and is accompanied by changes of other properties, such as electrochemical properties, of the wear-resistant material, and the changes of the electrochemical properties affect other properties of the wear-resistant material, such as corrosion resistance, so that the use of the material is finally affected. The conventional friction and wear equipment cannot realize the friction and wear performance evaluation of the wear-resistant material under the influence of the multiple factors.
Disclosure of Invention
The invention aims to provide a multifunctional friction wear machine which can simulate friction experiments of wear-resistant materials in various environments, and is simple and compact in structure and multifunctional.
In order to solve the technical problem, the invention provides a multifunctional friction wear machine, which comprises a rack, a main shaft, a friction force sensor, a lifting support, a lifting driving unit, a pair grinding wheel, an electrochemical unit and a spraying unit, wherein the main shaft is arranged on the rack; the main shaft horizontally and rotatably penetrates through the rack; one end of the main shaft is connected with a rotating motor, and the other end of the main shaft is connected with a fixing piece for fixing a sample; the rotating motor is arranged on the rack; the friction force sensor is arranged at one end of the main shaft close to the rotating motor; the lifting bracket is arranged on the rack in a sliding manner; the lifting driving unit is arranged on the rack, is connected with the lifting support and is used for driving the lifting support to lift; the pair of grinding wheels are connected with the lifting bracket and are positioned right above the fixing piece; the electrochemical unit is arranged on the frame and corresponds to the fixing piece; the spraying unit is arranged on the rack and corresponds to the fixing piece.
Preferably, the friction-wear machine further comprises a waste liquid bucket disposed at one side of the frame.
Preferably, the electrochemical unit comprises a connector and an electrochemical device, wherein the connector is arranged on the frame and corresponds to the fixing piece; the connector is connected to the electrochemical device.
Preferably, the spraying unit comprises a nozzle, a pump body and a storage barrel, wherein the nozzle is arranged on the frame and corresponds to the fixing piece; the pump body and store the bucket all set up in the frame, its the pump body is connected respectively the nozzle with store the bucket.
Preferably, the friction wear machine further comprises a hood, and the hood is arranged on the frame.
Preferably, the hood is provided with a temperature sensor, a display and an operator.
Preferably, the hood is provided with an observation window and an operation door which are arranged corresponding to the fixing member.
Preferably, the lifting support comprises a connecting rod, one end of the connecting rod is provided with a pressure sensor, and the grinding wheel is rotatably arranged at the other end of the connecting rod.
Preferably, the lifting driving unit comprises a lifting screw rod, a screw rod nut and a lifting motor; the screw rod nut is arranged on the lifting screw rod; two ends of the lifting screw rod are respectively arranged on the rack through bearings; the lifting motor is arranged on the rack and is connected with the top end of the lifting screw rod; the lifting bracket is arranged on the screw rod nut; the lifting screw rod rotates to drive the lifting support to lift along the lifting screw rod.
Preferably, the friction wear machine further comprises an indexing unit comprising an indexing motor, an indexing rod and an indexing wheel; the indexing motor is arranged on the lifting support; the indexing rod is arranged on the machine frame through a bearing, one end of the indexing rod is connected with the indexing motor, and the other end of the indexing rod is provided with a thread; the indexing wheel is coaxially connected with the pair of grinding wheels, a groove matched with the thread is formed in the circumferential surface of the indexing wheel, and the indexing wheel is meshed with the other end of the indexing rod; the indexing motor drives the indexing rod to rotate, the other end of the indexing rod drives the indexing wheel to rotate, and the indexing wheel drives the pair of grinding wheels to rotate, so that the contact surfaces of the pair of grinding wheels and the sample are changed.
The invention has the following beneficial effects:
the correcting force measuring device is provided with the lifting driving unit and the lifting bracket, and the grinding wheel is lifted, so that the pressure of the grinding wheel on a sample can be adjusted, and the influence of the pressure on the wear performance of the sample is detected; and meanwhile, an electrochemical unit and a spraying unit are arranged to perform electrochemical spraying and electrochemical actions on the sample, so that the sample abrasion performance under different environments can be tested.
Drawings
Fig. 1 is a schematic structural view of a multifunctional friction-wear machine provided by an embodiment of the invention;
FIG. 2 is an enlarged view of the internal structure of the multifunctional friction-wear machine provided by the embodiment of the present invention;
fig. 3 is an enlarged view of another angular internal structure of the multifunctional friction-wear machine provided by the embodiment of the present invention.
Reference numerals:
1. a frame; 2. a main shaft; 21. a rotating electric machine; 22. a fixing member; 3. a friction force sensor; 4. a lifting support; 41. a connecting rod; 42. a pressure sensor; 5. a lifting drive unit; 51. a lifting screw rod; 52. a lifting motor; 6. aligning the grinding wheel; 7. an electrochemical cell; 71. a joint; 8. a spray unit; 81. a nozzle; 9. a waste liquid barrel; 10. a hood; 11. a display; 12. an operator; 13. an observation window; 14. operating the door; 15. an indexing unit; 151. an indexing motor; 152. an index lever; 153. and an indexing wheel.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a multifunctional friction-wear machine, including a frame 1, a main shaft 2, a friction force sensor 3, a lifting bracket 4, a lifting driving unit 5, a counter-grinding wheel 6, an electrochemical unit 7, and a spraying unit 8; the main shaft 2 horizontally and rotatably penetrates through the frame 1; one end of the main shaft 2 is connected with a rotating motor 21, and the other end of the main shaft is connected with a fixing piece 22 for fixing a sample; the rotating motor 21 is arranged on the frame 1; the friction force sensor 3 is arranged at one end of the main shaft 2 close to the rotating motor 21; the lifting bracket 4 is arranged on the frame 1 in a sliding way; the lifting driving unit 5 is arranged on the frame 1, is connected with the lifting support 4 and is used for driving the lifting support 4 to lift; the grinding wheel 6 is connected with the lifting bracket 4 and is positioned right above the fixing piece 22; the electrochemical unit 7 is arranged on the frame 1 and is arranged corresponding to the fixing member 22; the spraying unit 8 is disposed on the frame 1, and is disposed corresponding to the fixing member 22.
In the using process of the multifunctional friction wear machine, a sample is sleeved at the fixing part 22, and the lifting driving unit 5 drives the lifting support 4 to descend so that the grinding wheel 6 is abutted to the sample; starting the rotating motor 21, driving the main shaft 2 to rotate by the rotating motor 21, driving the sample to rotate by the main shaft 2, rubbing the sample against the grinding wheel 6, and detecting the friction force applied to the sample by the friction sensor; in addition, the spraying unit 8 or the electrochemical unit 7 can be started as required, various factors can be simulated, and the abrasion performance of the sample can be evaluated.
In some preferred embodiments of the present invention, the friction-wear machine further comprises a waste liquid bucket 9, and the waste liquid bucket 9 is disposed at one side of the frame 1. In this way, the waste liquid tank 9 can be used to store waste liquid, preventing it from contaminating the equipment or the environment.
In some preferred embodiments of the present invention, the electrochemical unit 7 comprises a connector 71 and an electrochemical device, the connector 71 is disposed on the frame 1, and it is disposed corresponding to the fixing member 22; the connector 71 is connected to the electrochemical device. Specifically, the joint 71 can perform electrochemical action on the sample to change the electrochemical performance of the sample.
In some preferred embodiments of the present invention, the spraying unit 8 comprises a nozzle 81, a pump body and a storage barrel, the nozzle 81 is disposed on the frame 1 and is disposed corresponding to the fixing member 22; the pump body and the storage barrel are both arranged in the frame 1, and the pump body is respectively connected with the nozzle 81 and the storage barrel. Specifically, the solution in the storage barrel is delivered to the nozzle 81 through the pump body, and the nozzle 81 sprays the solution into the environment around the sample, thereby changing the PH of the environment of the sample. The sprayed solution may be a hydrochloric acid solution.
In some preferred embodiments of the present invention, the friction wear machine further includes a hood 10, and the hood 10 is disposed over the frame 1.
In some preferred embodiments of the invention, the enclosure 10 is provided with a temperature sensor, a display 11 and an operator 12. Specifically, the temperature inside the hood 10 may be monitored by a temperature sensor, while the display 11 may display various parameter values inside the hood 10, and the operator 12 may operate the lifting unit and the rotating motor 21.
In some preferred embodiments of the present invention, the hood 10 is provided with an observation window 13 and an operation door 14 which are provided corresponding to the fixing member 22. Thus, the observation window 13 can be convenient for an operator to observe the internal condition of the hood 10, and the operation door 14 can be opened, so that the operator can maintain the wear machine or replace a sample conveniently.
In some preferred embodiments of the present invention, the lifting bracket 4 comprises a connecting rod 41, one end of the connecting rod 41 is provided with a pressure sensor 42, and the grinding wheel 6 is rotatably arranged at the other end of the connecting rod 41. In this manner, pressure sensor 42 may monitor the pressure of grinding wheel 6 against the sample.
In some preferred embodiments of the present invention, the elevation driving unit 5 includes an elevation screw 51, a screw nut, and an elevation motor 52; the screw rod nut is arranged on the lifting screw rod; two ends of the lifting screw rod are respectively arranged on the frame 1 through bearings; the lifting motor 52 is arranged on the frame 1 and is connected with the top end of the lifting screw rod 51; the lifting bracket 4 is arranged on the screw rod nut; wherein, the lifting screw rod rotates to drive the lifting bracket 4 to lift along the lifting screw rod. In this way, the lifting motor 52 drives the lifting screw to rotate, so that the screw nut is lifted along the lifting screw 51, and the screw nut drives the lifting bracket 4 to be lifted along the lifting screw 51, thereby driving the grinding wheel 6 to be lifted.
Further, the frame 1 is provided with a plurality of support rods, and the lifting support 4 is a lifting plate which is slidably arranged on the plurality of support rods respectively.
In some preferred embodiments of the present invention, the friction wear machine further comprises an indexing unit 15, the indexing unit 15 comprising an indexing motor 151, an indexing rod 152 and an indexing wheel 153; the indexing motor 151 is arranged on the lifting support 4; the indexing rod 152 is arranged on the machine frame 1 through a bearing, one end of the indexing rod 152 is connected with the indexing motor 151, and the other end of the indexing rod is provided with a thread; the indexing wheel 153 is coaxially connected with the grinding wheel 6, a groove matched with the thread is formed in the circumferential surface of the indexing wheel 153, and the indexing wheel 153 is meshed with the other end of the indexing rod 152; the indexing motor 151 drives the indexing rod 152 to rotate, the other end of the indexing rod 152 drives the indexing wheel 153 to rotate, and the indexing wheel 153 drives the grinding wheel 6 to rotate, so that the contact surface of the grinding wheel 6 and the sample is changed.
Further, one end of the indexing rod 152 connected with the indexing motor 151 is provided with a first engaging tooth, and the rotating shaft of the indexing motor 151 is provided with a second engaging tooth, and the first engaging tooth and the second engaging tooth are engaged and connected.
It should be noted that the preferred embodiment of the present invention further includes an external control mechanism, and the control mechanism is electrically connected to the rotating motor 21, the friction force sensor 3, the lift motor 52, the index motor 151, the pump body, the electrochemical device, the temperature sensor, the display 11, the operator 12, and the pressure sensor 42, respectively.
To sum up, the preferred embodiment of the present invention provides a multifunctional friction wear machine, which is compared with the prior art:
the correcting force measuring device is provided with the lifting driving unit 5 and the lifting support 4, the grinding wheel 6 is lifted, the pressure of the grinding wheel 6 on a sample can be adjusted, and the influence of the pressure on the wear performance of the sample is detected; and an electrochemical unit 7 and a spraying unit 8 are arranged at the same time, so that the sample is subjected to electrochemical spraying and electrochemical action, and the test of the abrasion performance of the sample in different environments is realized.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A multifunctional friction wear machine is characterized in that,
the method comprises the following steps:
a frame (1);
a main shaft (2), wherein the main shaft (2) horizontally and rotatably penetrates through the frame (1); one end of the main shaft (2) is connected with a rotating motor (21), and the other end of the main shaft is connected with a fixing piece (22) for fixing a sample; the rotating motor (21) is arranged on the rack (1), the fixing piece is cylindrical, and the sample is annular;
the friction force sensor (3), the friction force sensor (3) is arranged at one end of the main shaft (2) close to the rotating motor (21);
the lifting support (4) is arranged on the rack (1) in a sliding manner;
the lifting driving unit (5) is arranged on the rack (1), is connected with the lifting support (4) and is used for driving the lifting support (4) to lift;
a pair of grinding wheels (6), wherein the pair of grinding wheels (6) are connected with the lifting bracket (4) and are positioned right above the fixing piece (22);
the electrochemical unit (7) is arranged on the frame (1), and the electrochemical unit (7) is arranged corresponding to the fixing piece (22);
the spraying unit (8), the said spraying unit (8) is set up in the said framework (1), and it and the said fixed part (22) are set up correspondingly;
an indexing unit (15), the indexing unit (15) comprising an indexing motor (151), an indexing lever (152) and an indexing wheel (153); the indexing motor (151) is arranged on the lifting support (4); the indexing rod (152) is arranged on the machine frame (1) through a bearing, one end of the indexing rod (152) is connected with the indexing motor (151), and the other end of the indexing rod is provided with a thread; the indexing wheel (153), the indexing wheel (153) is coaxially connected with the pair of grinding wheels (6), a groove matched with the thread is arranged on the circumferential surface of the indexing wheel (153), and the indexing wheel (153) is meshed with the other end of the indexing rod (152); the indexing motor (151) drives the indexing rod (152) to rotate, the other end of the indexing rod (152) drives the indexing wheel (153) to rotate, and the indexing wheel (153) drives the pair of grinding wheels (6) to rotate, so that the contact surfaces of the pair of grinding wheels (6) and the sample are changed.
2. The multifunctional friction wear machine of claim 1 wherein:
still include waste liquid bucket (9), waste liquid bucket (9) set up in one side of frame (1).
3. The multifunctional friction wear machine of claim 1 wherein:
the electrochemical unit (7) comprises a connector (71) and an electrochemical device, wherein the connector (71) is arranged on the rack (1) and corresponds to the fixing piece (22); the connector (71) is connected to the electrochemical device.
4. The multifunctional friction wear machine of claim 1 wherein:
the spraying unit (8) comprises a nozzle (81), a pump body and a storage barrel, wherein the nozzle (81) is arranged on the rack (1) and corresponds to the fixing piece (22); the pump body and the storage barrel are arranged in the rack (1), and the pump body is connected with the nozzle (81) and the storage barrel respectively.
5. The multifunctional friction wear machine according to claim 1, characterized in that:
the novel electric fan is characterized by further comprising a hood (10), wherein the hood (10) is covered on the rack (1).
6. The multifunctional friction wear machine of claim 5 wherein:
the hood (10) is provided with a temperature sensor, a display (11) and an operator (12).
7. The multifunctional friction wear machine of claim 5 wherein:
the hood (10) is provided with an observation window (13) and an operation door (14) which are arranged corresponding to the fixing piece (22).
8. The multifunctional friction wear machine of claim 1 wherein:
the lifting support (4) comprises a connecting rod (41), one end of the connecting rod (41) is provided with a pressure sensor (42), and the grinding wheel (6) is rotatably arranged at the other end of the connecting rod (41).
9. The multifunctional friction wear machine of claim 1 wherein:
the lifting driving unit (5) comprises a lifting screw rod (51), a screw rod nut and a lifting motor (52); the screw rod nut is arranged on the lifting screw rod; two ends of the lifting screw rod are respectively arranged on the rack (1) through bearings; the lifting motor (52) is arranged on the rack (1) and is connected with the top end of the lifting screw rod (51); the lifting bracket (4) is arranged on the screw rod nut; the lifting screw rod rotates to drive the lifting support (4) to lift along the lifting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681251.7A CN114459932B (en) | 2021-12-30 | 2021-12-30 | Multifunctional friction wear machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111681251.7A CN114459932B (en) | 2021-12-30 | 2021-12-30 | Multifunctional friction wear machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114459932A CN114459932A (en) | 2022-05-10 |
| CN114459932B true CN114459932B (en) | 2022-11-04 |
Family
ID=81408462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111681251.7A Active CN114459932B (en) | 2021-12-30 | 2021-12-30 | Multifunctional friction wear machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114459932B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204286967U (en) * | 2014-11-10 | 2015-04-22 | 宝山钢铁股份有限公司 | A kind of pin disc type corrosive wear test unit |
| CN109187328A (en) * | 2018-10-24 | 2019-01-11 | 重庆大学 | A kind of test method of guide rail electrochemical corrosion abrasion |
| CN210513992U (en) * | 2019-09-13 | 2020-05-12 | 无锡通测检测技术有限公司 | Automobile part abrasion detection device |
| CN112858070A (en) * | 2021-01-18 | 2021-05-28 | 江苏久祥汽车电器集团有限公司 | Wear resistance testing device for automobile part die |
| CN214408524U (en) * | 2020-12-15 | 2021-10-15 | 佛山市陶瓷研究所检测有限公司 | Wear-resisting testing arrangement of ceramic product |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10241018B2 (en) * | 2015-10-28 | 2019-03-26 | U.S. Department Of Energy | Wear test apparatus |
-
2021
- 2021-12-30 CN CN202111681251.7A patent/CN114459932B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204286967U (en) * | 2014-11-10 | 2015-04-22 | 宝山钢铁股份有限公司 | A kind of pin disc type corrosive wear test unit |
| CN109187328A (en) * | 2018-10-24 | 2019-01-11 | 重庆大学 | A kind of test method of guide rail electrochemical corrosion abrasion |
| CN210513992U (en) * | 2019-09-13 | 2020-05-12 | 无锡通测检测技术有限公司 | Automobile part abrasion detection device |
| CN214408524U (en) * | 2020-12-15 | 2021-10-15 | 佛山市陶瓷研究所检测有限公司 | Wear-resisting testing arrangement of ceramic product |
| CN112858070A (en) * | 2021-01-18 | 2021-05-28 | 江苏久祥汽车电器集团有限公司 | Wear resistance testing device for automobile part die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114459932A (en) | 2022-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114459932B (en) | Multifunctional friction wear machine | |
| CN109932310B (en) | Metal sample corrosion test device | |
| CN113375859A (en) | Online calibration method and device for controllable torque impact wrench | |
| CN111504511A (en) | Durable industrial thermometer | |
| CN212646086U (en) | High-temperature high-pressure graphite bearing wear performance test device | |
| CN207730447U (en) | A kind of guide wheel running-in test device | |
| CN108931366A (en) | Axle sleeve wear test equipment | |
| CN209911100U (en) | Multifunctional electro-hydraulic servo universal testing machine | |
| CN107515162B (en) | Mechanical static torque testing machine | |
| CN214584971U (en) | Product outward appearance detects uses outward appearance defect detection device | |
| CN220136190U (en) | Threaded hole end face runout detection device | |
| CN208366594U (en) | A kind of electric motor of automobile door closure opening and closing conjunction durable test stand | |
| CN220399382U (en) | Environment detection device for dust environment | |
| CN214011038U (en) | Protection device of industrial nondestructive testing equipment | |
| CN216925641U (en) | Monitoring equipment for outdoor environment protection | |
| CN219038389U (en) | Window glass lifter slider check out test set | |
| CN219015992U (en) | Simple spraying putty viscosity testing device | |
| CN216846962U (en) | Concrete strength detection equipment | |
| CN215374803U (en) | Microcomputer-controlled electro-hydraulic servo universal testing machine | |
| CN217637956U (en) | Door cover switch service life testing machine | |
| CN215263415U (en) | Portable food detection device | |
| CN213121805U (en) | Multifunctional gas detection device | |
| CN220473473U (en) | PH detector for environment detection | |
| CN116359727B (en) | Series test bed for detecting performance of rocker switch of passenger car | |
| CN220258237U (en) | Soil sample grinder for soil detection |
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 |