CN112605958A - Three-way adjusting elevator structure for water pump test and working method thereof - Google Patents

Three-way adjusting elevator structure for water pump test and working method thereof Download PDF

Info

Publication number
CN112605958A
CN112605958A CN202011422096.2A CN202011422096A CN112605958A CN 112605958 A CN112605958 A CN 112605958A CN 202011422096 A CN202011422096 A CN 202011422096A CN 112605958 A CN112605958 A CN 112605958A
Authority
CN
China
Prior art keywords
water pump
roller
elevator structure
test
lifting mechanism
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.)
Pending
Application number
CN202011422096.2A
Other languages
Chinese (zh)
Inventor
刘同帮
陶仁和
张勇
平凡
丁国庆
李保
戚胜坚
郭嘉
汪灿飞
叶斌斌
王佳昱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Original Assignee
Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd filed Critical Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Priority to CN202011422096.2A priority Critical patent/CN112605958A/en
Publication of CN112605958A publication Critical patent/CN112605958A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/10Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/14Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
    • B25H1/16Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088Testing machines

Abstract

The invention relates to a three-way adjusting elevator structure for a water pump test and a working method thereof, belonging to the field of non-standard equipment for the water pump test. The elevator structure comprises a base, an elevating mechanism, a transverse sliding rail mechanism and a longitudinal roller mechanism, wherein the elevating mechanism is arranged on the base; the invention also provides a working method of the three-way adjusting elevator structure for the water pump test. The invention has the advantages of reasonable structural design, compactness, reliability, convenient operation and high automation degree, ensures that the water pumps of various types can be tested in the same station, has strong universality and high cost performance, and meets the test requirements.

Description

Three-way adjusting elevator structure for water pump test and working method thereof
Technical Field
The invention relates to a lifter structure and a working method, in particular to a three-way adjusting lifter structure for a water pump test and a working method thereof, belonging to the field of nonstandard equipment for the water pump test.
Background
In the water pump test field, a test station is compatible with the placement and fixation of various models of water pumps. The height of the water inlet and the water outlet of the water pumps of different models from the base is variable, and the distance between the end faces of the water inlet and the water outlet is variable, so that the water inlet and the water outlet of the water pumps are aligned with the test pipeline during testing.
The traditional operation method comprises the following steps: the base plate is plugged below the water pump base, the lifting machine is used for placing the plane arrangement of the water pump, the operation difficulty is increased, and meanwhile, the test efficiency is seriously reduced.
The Chinese patent with publication number CN107747548A, 03 and 02 of 2018, discloses a Chinese invention application document named as a semi-submersible hydraulic testing device of a vertical axial suction centrifugal pump, which comprises a test cylinder, a lifting platform, a water suction pipeline, an actuating motor, an adjusting screw rod and a degassing pipe, wherein the water suction pipeline is arranged on one side of the test cylinder and is connected with the test cylinder, the water suction pipeline is also provided with an adjusting valve, the lifting platform is provided with an adapter plate, a pump body to be tested is conveniently arranged on the lifting platform through the adapter plate, the adjusting screw rod is arranged between the lifting platform and the adapter plate, the position of the lifting platform in the vertical direction is adjusted through the adjusting screw rod, the actuating motor is arranged on the water suction pipeline and is connected with the adjusting valve, and the degassing pipe is also arranged on the other side of the test cylinder. Although the invention relates to the lifting platform, the testing device can be suitable and matched for various types of vertical pumps, and the testing device is lifted, the structure of the lifting machine has higher automation degree, and a specific method for testing the convenience of the operation of the lifting machine is provided, so that the use requirement can be met.
Therefore, the elevator structure which is produced by releasing workers from complicated adjustment is provided, so that the water pump test is more efficient, and the elevator structure is particularly necessary.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the three-way adjusting elevator structure for the water pump test and the working method thereof, wherein the three-way adjusting elevator structure is compact and reasonable in structural design, stable and reliable, convenient to operate, high in automation degree, strong in universality and high in cost performance, and can enable multiple types of water pumps to be tested in the same station.
The technical scheme adopted by the invention for solving the problems is as follows: this three-way adjustment lift structure is used in water pump test, include the base and install the elevating system on this base, its characterized in that: the horizontal sliding rail mechanism is arranged on the lifting mechanism, and the longitudinal roller mechanism is arranged on the horizontal sliding rail mechanism; the lifting mechanism comprises a servo motor, a plurality of steering machines and a plurality of lead screw lifters, the steering machines and the lead screw lifters are mutually linked, and the lead screw lifters drive lead screws to synchronously act through the servo motor; the transverse sliding rail mechanism comprises a guide rail supporting plate, a plurality of guide rails, a plurality of sliding blocks and a plurality of centering cylinders, the guide rail supporting plate is connected with the lifting mechanism, the plurality of guide rails are all fixed on the guide rail supporting plate, the plurality of sliding blocks are movably connected with the plurality of guide rails, and the guide rail supporting plate is provided with the plurality of centering cylinders; the longitudinal roller mechanism comprises a roller frame and a plurality of rollers arranged at intervals, the rollers are all connected with the roller frame, and the roller frame is arranged on a sliding block of the transverse sliding rail mechanism.
Preferably, the invention further comprises a positioning rod, and the roller frame is provided with one positioning rod.
Preferably, the lifting mechanism further comprises a coupler, the screw rod lifters and the steering gear are connected with each shaft through the coupler and are connected in series to form a whole, and screw rods of the four screw rod lifters synchronously ascend and descend under the driving of the servo motor.
Preferably, the number of the screw rod lifters is four, and lifting rods of the four screw rod lifters are all fixed with the guide rail supporting plate.
Preferably, the guide rails and the sliding blocks are two, and the two sliding blocks transversely slide along the corresponding two guide rails.
Preferably, the number of the centering cylinders is two, and the two centering cylinders are symmetrically arranged on the guide rail support plate.
Preferably, the steering machine of the present invention is a 90 ° steering machine, and the number of the 90 ° steering machines is three.
Preferably, the longitudinal roller mechanism of the invention adopts a power roller line.
The invention also provides a working method of the three-way adjusting elevator structure for the water pump test, which is characterized by comprising the following steps of: the method comprises the following specific steps: first, each mechanism is in an initial position: the lifting mechanism stops at the original position, and two piston rods of the centering cylinder extend out in place, so that the piston rods can hold a positioning rod of the roller frame, and the longitudinal roller mechanism can stop stably at the central line position of the lifter structure; when the tooling plate carries a water pump to roll to the specified position of the lifter structure along the transmission direction of the longitudinal roller mechanism, the roller stops running; the control system sends the ascending or descending height to a servo motor according to the specific model of the water pump to be tested, the servo motor drives a lifting mechanism to ascend or descend to a specified height, so that the water inlet and the water outlet of the water pump are aligned with the height direction of the water inlet and the water outlet of the test pipeline, and then a longitudinal roller mechanism rotates a roller forwards or reversely according to an adjusting instruction sent by the control system, so that the water inlet and the water outlet of the water pump are aligned with the test pipeline in the longitudinal direction; loosening the two centering cylinders, and butting the test pipeline with the water inlet and the water outlet of the tested water pump; after the test is finished and the test pipeline is separated from the water inlet and the water outlet of the water pump, piston rods of the two centering cylinders extend out to push a positioning rod of the roller frame; and clamping the longitudinal roller mechanism at the original position again, then, restoring the longitudinal roller mechanism and the lifting mechanism to the original position according to the reverse route of the control system, and finally, rolling the tooling plate out of the lifting mechanism with the tested water pump.
Compared with the prior art, the invention has the following advantages and effects: the overall structure is reasonable in design, compact in structure and high in automation degree, so that the multi-type water pumps can be tested in the same station, and the device is high in universality and high in cost performance; the problems of many manual aids, low efficiency and low automation degree of the traditional test station are solved.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
FIG. 2 is a schematic side view of an embodiment of the present invention.
Fig. 3 is a schematic top view of an embodiment of the present invention.
Fig. 4 is a schematic perspective view of the lifting mechanism, the transverse slide rail mechanism and the longitudinal roller mechanism according to the embodiment of the invention.
In the figure: the device comprises a base 1, a lifting mechanism 2, a transverse sliding rail mechanism 3 and a longitudinal roller mechanism 4;
the lifting mechanism 2: a screw rod lifter 21, a steering gear 22, a servo motor 23 and a coupling 24; a lift lever 211;
horizontal slide rail mechanism 3: a guide rail support plate 31, a guide rail 32, a slide block 33, a centering cylinder 34;
longitudinal roller mechanism 4: roller frame 41, roller 42, locating rod 411.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples
Referring to fig. 1 to 4, the three-way adjusting elevator structure for the water pump test of the present embodiment includes a base 1, a lifting mechanism 2, a transverse sliding rail mechanism 3, and a longitudinal roller mechanism 4, wherein the whole set of lifting mechanism 2 is installed on the base 1, the transverse sliding rail mechanism 3 is installed on the lifting mechanism 2, and the longitudinal roller mechanism 4 is installed on the transverse sliding rail mechanism 3.
The lifting mechanism 2 of the present embodiment includes a coupling 24, a servo motor 23, a plurality of steering gears 22 and a plurality of lead screw lifters 21, the plurality of steering gears 22 and the plurality of lead screw lifters 21 are linked to each other, and the plurality of lead screw lifters 21 are driven by the servo motor 23 to synchronously operate lead screws thereof.
In the present embodiment, the screw lifters 21 and the steering gear 22 are connected to each other by a coupling 24 and are connected in series to form a whole, and the screws of the four screw lifters 21 are synchronously raised and lowered by driving of the servo motor 23.
The number of the screw lifters 21 in this embodiment is four, and the lift rods 211 of the four screw lifters 21 are fixed to the rail support plate 31.
The steering gear 22 of the present embodiment is a 90 ° steering gear 22, and three steering gears 22 are provided.
The transverse slide rail mechanism 3 of the embodiment comprises a guide rail support plate 31, a plurality of guide rails 32, a plurality of sliding blocks 33 and a plurality of centering cylinders 34, wherein the guide rail support plate 31 is connected with the lifting mechanism 2, the plurality of guide rails 32 are all fixed on the guide rail support plate 31, two or more sliding blocks 33 can transversely slide along the corresponding guide rails 32, and the guide rail support plate 31 is provided with the plurality of centering cylinders 34.
The two guide rails 32 and the two sliding blocks 33 are provided, and the two sliding blocks 33 slide along the two corresponding guide rails 32 transversely.
The number of the centering cylinders 34 is two, and the two centering cylinders 34 are symmetrically arranged on the guide rail support plate 31.
The longitudinal roller mechanism 4 of the present embodiment includes a roller frame 41 and a plurality of rollers 42 disposed at intervals, the plurality of rollers 42 are all connected to the roller frame 41, and the roller frame 41 is mounted on the sliding block 33 of the transverse sliding rail mechanism 3.
The drum frame 41 of this embodiment is provided with a positioning rod 411, which is fixedly connected to the drum frame 41.
In this embodiment, the longitudinal roller mechanism 4 is generally configured as a powered roller line in conjunction with the production line transmission.
The working process of the three-way adjusting elevator structure for the water pump test is as follows: first, each mechanism is in an initial position: the lifting mechanism 2 stops at the original position, and the two piston rods of the centering cylinder 34 extend to the right position, so that the piston rods can hold the positioning rods 411 of the roller frame 41, and the longitudinal roller mechanism 4 can be stopped stably at the central line position of the lifting mechanism. When the tooling plate carrying a water pump rolls along the transport direction of the longitudinal roller mechanism 4 to the designated position of the lifting platform, the roller 42 stops running. The control system sends the ascending or descending height to the servo motor 23 according to the specific model of the water pump to be tested, the servo motor 23 drives the ascending or descending system to ascend or descend to the designated height, so that the water inlet and the water outlet of the water pump are aligned with the height direction of the water inlet and the water outlet of the test pipeline, and then the longitudinal roller mechanism 4 rotates the roller 42 forwards or reversely according to an adjusting instruction sent by the control system, so that the water inlet and the water outlet of the water pump are aligned with the test pipeline in the longitudinal direction. And finally, the two centering cylinders 34 are loosened, the test pipeline is in butt joint with the water inlet and the water outlet of the tested water pump, and in the process, the longitudinal roller mechanism 4 can self-adaptively and transversely translate the position of the roller line according to the length of the test pipeline, so that the equipment damage caused by the length difference of the pipelines in the butt joint process of the pipelines is avoided. After the test is finished and the test pipeline is separated from the water inlet and the water outlet of the water pump, the piston rods of the two centering cylinders 34 extend out to push the positioning rods 411 of the roller frame 41. The longitudinal roller mechanism 4 is again clamped in the original position, then the longitudinal roller mechanism 4 and the lifting mechanism 2 are restored to the original position according to the reverse route of the control system, and finally the tooling plate rolls out of the lifter structure with the tested water pump.
The problem that many/inefficiency of traditional test station manual assistance/degree of automation are low has been solved to this embodiment, and the effect obtains verifying in practical application, satisfies the user demand.
And will be apparent to those skilled in the art from the foregoing description.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (8)

1. The utility model provides a three-dimensional adjustment lift structure is used in water pump test, includes base (1) and installs elevating system (2) on this base (1), its characterized in that: the automatic feeding device is characterized by further comprising a transverse sliding rail mechanism (3) and a longitudinal roller mechanism (4), wherein the transverse sliding rail mechanism (3) is installed on the lifting mechanism (2), and the longitudinal roller mechanism (4) is installed on the transverse sliding rail mechanism (3); the lifting mechanism (2) comprises a servo motor (23), a plurality of steering machines (22) and a plurality of lead screw lifters (21), the steering machines (22) and the lead screw lifters (21) are mutually linked, and the lead screw lifters (21) drive lead screws to synchronously act through the servo motor (23); the transverse sliding rail mechanism (3) comprises a guide rail supporting plate (31), a plurality of guide rails (32), a plurality of sliding blocks (33) and a plurality of centering cylinders (34), the guide rail supporting plate (31) is connected with the lifting mechanism (2), the plurality of guide rails (32) are all fixed on the guide rail supporting plate (31), the plurality of sliding blocks (33) are movably connected with the plurality of guide rails (32), and the guide rail supporting plate (31) is provided with the plurality of centering cylinders (34); the longitudinal roller mechanism (4) comprises a roller frame (41) and a plurality of rollers (42) arranged at intervals, the rollers (42) are all connected with the roller frame (41), the roller frame (41) is installed on a sliding block (33) of the transverse sliding rail mechanism (3), and a positioning rod (411) is arranged on the roller frame (41).
2. The three-way adjusting elevator structure for the water pump test according to claim 1, wherein: the lifting mechanism (2) further comprises a coupler (24), and the lead screw lifter (21) and the steering gear (22) are connected with each other through the coupler (24) and are connected in series to form a whole.
3. The three-way adjusting elevator structure for the water pump test according to claim 1, wherein: the number of the screw rod lifters (21) is four, and lifting rods (211) in the four screw rod lifters (21) are all fixed with the guide rail supporting plate (31).
4. The three-way adjusting elevator structure for the water pump test according to claim 1, wherein: the guide rails (32) and the sliding blocks (33) are two, and the two sliding blocks (33) transversely slide along the corresponding two guide rails (32).
5. The three-way adjusting elevator structure for the water pump test according to claim 1, wherein: the number of the centering cylinders (34) is two, and the two centering cylinders (34) are symmetrically arranged on the guide rail support plate (31).
6. The three-way adjusting elevator structure for the water pump test according to claim 1, wherein: the steering machines (22) are 90-degree steering machines (22), and the number of the 90-degree steering machines (22) is three.
7. The three-way adjusting elevator structure for the water pump test according to claim 1, wherein: the longitudinal roller mechanism (4) adopts a power roller line.
8. A method of operating a three-way adjustable elevator structure for water pump testing, using the three-way adjustable elevator structure for water pump testing of any one of claims 1 to 7, the method comprising: the method comprises the following specific steps:
first, each mechanism is in an initial position: the lifting mechanism (2) stops at the original position, and two piston rods of the centering cylinder (34) extend to the right position, so that the piston rods can hold a positioning rod (411) of the roller rack (41), and the longitudinal roller mechanism (4) can be stably stopped at the central line position of the lifting mechanism;
when the tooling plate carries a water pump to roll to the specified position of the lifter structure along the transmission direction of the longitudinal roller mechanism (4), the roller (42) stops running;
the control system sends the ascending or descending height to the servo motor (23) according to the specific model of the water pump to be tested, the servo motor (23) drives the lifting mechanism (2) to ascend or descend to a specified height, so that the water inlet and the water outlet of the water pump are aligned with the height direction of the water inlet and the water outlet of the test pipeline, and then the longitudinal roller mechanism (4) rotates the roller (42) forwards or reversely according to an adjusting instruction sent by the control system, so that the water inlet and the water outlet of the water pump are aligned with the test pipeline in the longitudinal direction;
two centering cylinders (34) are loosened, and the testing pipeline is in butt joint with a water inlet and a water outlet of the tested water pump; after the test is finished and the test pipeline is separated from the water inlet and the water outlet of the water pump, piston rods of the two centering cylinders (34) extend out to push a positioning rod (411) of the roller rack (41);
and (3) clamping the longitudinal roller mechanism (4) at the original position again, then, restoring the longitudinal roller mechanism (4) and the lifting mechanism (2) to the original position according to the reverse route of the control system, and finally, rolling the tooling plate out of the lifting mechanism with the tested water pump.
CN202011422096.2A 2020-12-08 2020-12-08 Three-way adjusting elevator structure for water pump test and working method thereof Pending CN112605958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011422096.2A CN112605958A (en) 2020-12-08 2020-12-08 Three-way adjusting elevator structure for water pump test and working method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011422096.2A CN112605958A (en) 2020-12-08 2020-12-08 Three-way adjusting elevator structure for water pump test and working method thereof

Publications (1)

Publication Number Publication Date
CN112605958A true CN112605958A (en) 2021-04-06

Family

ID=75229555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011422096.2A Pending CN112605958A (en) 2020-12-08 2020-12-08 Three-way adjusting elevator structure for water pump test and working method thereof

Country Status (1)

Country Link
CN (1) CN112605958A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000025953A (en) * 1998-07-13 2000-01-25 Calsonic Corp Shipment system for band plate parts
CN203558821U (en) * 2013-09-25 2014-04-23 齐齐哈尔轨道交通装备有限责任公司 Bogie elevating device
CN106894983A (en) * 2017-04-28 2017-06-27 运城学院 A kind of immersible pump testboard pipeline automatic butt jointing device and its docking calculation
CN208471023U (en) * 2018-06-25 2019-02-05 济南方德自动化设备股份有限公司 A kind of adjustable band of upper discharge position jacks up the centering feed device of function
CN110735799A (en) * 2019-11-11 2020-01-31 浙江省机电设计研究院有限公司 lifting clamping device for automatic test of water pump and working method thereof
CN211056043U (en) * 2019-11-26 2020-07-21 厦门航天思尔特机器人系统股份公司 RGV dolly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000025953A (en) * 1998-07-13 2000-01-25 Calsonic Corp Shipment system for band plate parts
CN203558821U (en) * 2013-09-25 2014-04-23 齐齐哈尔轨道交通装备有限责任公司 Bogie elevating device
CN106894983A (en) * 2017-04-28 2017-06-27 运城学院 A kind of immersible pump testboard pipeline automatic butt jointing device and its docking calculation
CN208471023U (en) * 2018-06-25 2019-02-05 济南方德自动化设备股份有限公司 A kind of adjustable band of upper discharge position jacks up the centering feed device of function
CN110735799A (en) * 2019-11-11 2020-01-31 浙江省机电设计研究院有限公司 lifting clamping device for automatic test of water pump and working method thereof
CN211056043U (en) * 2019-11-26 2020-07-21 厦门航天思尔特机器人系统股份公司 RGV dolly

Similar Documents

Publication Publication Date Title
CN109719166B (en) A pipeline aligning feeder for aviation
CN110977418B (en) Large-scale multipoint synchronous precise lifting pipe penetrating platform device
CN111571091A (en) Panel location fixed frame platform of outer box of fan
CN108262596B (en) Material taking and spacing device for densely arranged materials
CN204449117U (en) Straight device smoothed out with the fingers by a kind of reinforcing bar
CN112605958A (en) Three-way adjusting elevator structure for water pump test and working method thereof
CN214456534U (en) Three-way adjusting lifter structure for water pump test
CN210908910U (en) Automatic assembling equipment for hydraulic cylinder
CN219098052U (en) Automatic carrying device for bow-type cabling machine
CN110605574A (en) Automatic assembling equipment for hydraulic cylinder
CN116207931A (en) Motor rotor core laminating equipment
CN110509246A (en) A kind of delimitation tooling device of sheet metal bent line
CN202037220U (en) Double flanging machine
CN108746292A (en) Side machine is pulled in a kind of extruding of keg
CN110039273B (en) Automatic assembling machine for wall pipe assembly for air conditioner
CN219311168U (en) Steel pipe pile pair pipe machine capable of freely adjusting pipe joint height
CN102198463A (en) Double flanging machine
CN112555167A (en) Automatic test board for conventional vertical pump and test method thereof
CN219906732U (en) Lifting mechanism for bus duct production
CN112363007B (en) Display ageing equipment
CN220806440U (en) Pneumatic centering fixture
CN220536818U (en) Intermediate transition material platform
CN218341456U (en) Automatic assembling equipment for oil pump joint
CN112412831B (en) Automatic test board for comprehensive vertical pump and test method thereof
CN219591254U (en) Stacking device for silicon steel sheets of transformer

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210406