CN112814924B - Automatic pipe replacing device for vertical centrifugal pump test and working method thereof - Google Patents
Automatic pipe replacing device for vertical centrifugal pump test and working method thereof Download PDFInfo
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- CN112814924B CN112814924B CN202011572470.7A CN202011572470A CN112814924B CN 112814924 B CN112814924 B CN 112814924B CN 202011572470 A CN202011572470 A CN 202011572470A CN 112814924 B CN112814924 B CN 112814924B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
Abstract
The invention relates to an automatic pipe replacing device and a working method thereof, and belongs to the field of water pump detection equipment. The invention comprises a water inlet pipe base, a water inlet pipe changing rotating wheel bracket, a water inlet pipe changing upper bracket, a water outlet pipe changing rotating wheel bracket, a water outlet reducing pipe, a water outlet pipe base and a water inlet reducing pipe, wherein the left end of the water inlet pipe changing rotating wheel bracket is arranged on the water inlet pipe base, the right end of the water inlet pipe changing rotating wheel bracket is arranged on the water inlet pipe changing upper bracket, and the water inlet pipe changing upper bracket is arranged on the water inlet pipe base; the left end of the water outlet pipe changing rotating wheel bracket is arranged on the water outlet pipe changing upper bracket, and the water inlet pipe changing upper bracket is arranged on the water inlet pipe base; the water inlet reducer pipe is arranged in a plurality of through holes of the water inlet pipe changing rotating wheel bracket; the water outlet reducer pipe is arranged in a plurality of through holes of the water outlet pipe changing rotating wheel bracket. The vertical centrifugal pump has the advantages of simple and reasonable structural design and convenience in operation, and can realize automatic replacement of the reducing piezometer tube, improve the detection efficiency of the vertical centrifugal pump and meet the use requirements.
Description
Technical Field
The invention relates to a device and a method, in particular to an automatic pipe replacing device for testing a vertical centrifugal pump and a working method thereof, and belongs to the field of water pump detection equipment.
Background
In order to ensure the production quality of the water pump, a water test is required before the water pump leaves a factory so as to test whether the assembled water pump reaches a preset performance index. Because the caliber specifications of the water pump are more, one set of detection system is required to complete the test of the water pumps with different calibers, and therefore the reducing piezometer tube is required to be replaced to match the inlet calibers and the outlet calibers of different water pumps.
The current vertical centrifugal pump detection system, as disclosed in chinese patent No. CN206929096U whose publication date is 2018, 26.01.8, discloses a utility model named "a water pump testing device". This patent includes water storage tank, manual valve, flowmeter, rigidity straight tube, hose, solenoid valve, drainage solenoid valve, pressure transmitter, telescopic tube, pressure-measuring pipe, electrical control valve, hydraulic elevating platform and switch board. This water pump testing arrangement is closed testing arrangement, adopts the modularized design, and what can be convenient installs at water pump assembly line scene, reduces the transportation of water pump. On the other hand, the hydraulic lifting platform is arranged at the water pump testing station, so that the water pumps with different inlet and outlet center heights can be conveniently adjusted; the inlet and the outlet of the water pump and a water pump connecting pipe are clamped by a hydraulic device and are automatically connected and compressed; but the reducing piezometer tube needs to be replaced by manual operation. The reducing pressure-measuring pipe is usually made of stainless steel materials, and the weight is heavier, so that manual replacement is time-consuming and labor-consuming, and the efficiency is lower.
Therefore, the automatic pipe replacing device for testing is simple and reasonable in structural design, capable of achieving automatic replacement of the reducing piezometer pipe and improving detection efficiency of the vertical centrifugal pump, and is particularly necessary.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the vertical centrifugal pump testing automatic pipe replacing device and the working method thereof, wherein the vertical centrifugal pump testing automatic pipe replacing device has the advantages of simple and reasonable structural design, safety, reliability and convenience in operation, and can realize automatic replacement of the reducing pressure measuring pipe and improve the detection efficiency of the vertical centrifugal pump.
The technical scheme adopted by the invention for solving the problems is as follows: this vertical centrifugal pump test is from moving tub device, including inlet tube base, flexible inlet tube, inlet tube clamping device, the pipe runner support is traded in the intaking, the pipe upper bracket is traded in the intaking, the play water trades a tub runner support, goes out water reducing pipe, outlet pipe base, outlet pipe clamping device, flexible outlet pipe, the reducing pipe that intakes, inlet tube area seat bearing and outlet pipe area seat bearing, its characterized in that: the water inlet pipe clamping device and the water outlet pipe clamping device are identical in structure, the water outlet pipe clamping device is installed on the telescopic water outlet pipe, and the water inlet pipe clamping device is installed on the telescopic water inlet pipe; the left end of the water inlet pipe replacing rotating wheel bracket is arranged on the base of the water inlet pipe, the right end of the water inlet pipe replacing rotating wheel bracket is arranged on the upper bracket of the water inlet pipe replacing pipe through a bearing with a seat of the water inlet pipe, and the upper bracket of the water inlet pipe replacing pipe is arranged on the upper top surface of the base of the water inlet pipe; the right end of the water outlet pipe replacing rotating wheel support is arranged in the water outlet pipe base, the left end of the water outlet pipe replacing rotating wheel support is arranged on the upper support of the water outlet pipe replacing pipe through a water outlet pipe bearing with a seat, and the upper support of the water outlet pipe replacing pipe is arranged on the upper top surface of the water inlet pipe base; the water inlet pipe changing rotating wheel bracket is provided with a plurality of through holes, and the water inlet reducer pipe is arranged in the plurality of through holes of the water inlet pipe changing rotating wheel bracket; the water outlet pipe changing rotating wheel bracket is provided with a plurality of through holes, and the water outlet reducer pipe is arranged in the plurality of through holes of the water outlet pipe changing rotating wheel bracket; the water outlet pipe clamping device comprises a clamping turning plate, a clamping device telescopic rod, a clamping device turning plate support, a clamping device telescopic sleeve and a clamping device support, wherein the clamping device telescopic sleeve and the clamping device telescopic rod form a hydraulic cylinder, the clamping device support is connected with the clamping device telescopic rod, when the clamping device telescopic rod extends forwards, the clamping turning plate rotates around a fulcrum of the clamping device turning plate support, and the flange end face of the water outlet reducer pipe is clamped, so that the water outlet reducer pipe can stretch out and draw back along with the telescopic water outlet pipe.
Preferably, the invention also comprises a coupler and a motor, wherein the coupler and the motor are respectively arranged on the left and the right sides of the center line of the lifting roller line and are respectively used for driving the rotation of the water inlet pipe changing rotating wheel bracket and the water outlet pipe changing rotating wheel bracket.
Preferably, the right end of the water outlet pipe changing rotating wheel support is connected with a motor arranged in the water outlet pipe base through a coupler; the left end of the water inlet pipe changing rotating wheel support is connected with a motor arranged in the water inlet pipe base through a coupler.
Preferably, the water inlet pipe and outlet pipe replacing device comprises a lifting roller line, and the water inlet pipe base and outlet pipe base, the telescopic water inlet pipe and telescopic water outlet pipe, the water inlet pipe clamping device and outlet pipe clamping device, the water inlet pipe replacing rotating wheel support and the water outlet pipe replacing rotating wheel support, the water inlet pipe replacing upper support and the water outlet pipe replacing upper support, and the water inlet pipe bearing with a seat and the water outlet pipe bearing with a seat are respectively symmetrical about the central line of the lifting roller line.
Preferably, the number and the size of the through holes of the water inlet pipe changing rotating wheel bracket and the water outlet pipe changing rotating wheel bracket are set according to the number and the size of the required reducer pipes.
The invention provides a working method of an automatic pipe replacing device for testing a vertical centrifugal pump, which is characterized by comprising the following steps of: the specific process is as follows: before the water pump test, the water pump to be tested is conveyed to a position to be tested through a lifting roller line, according to the inlet and outlet calibers of the water pump to be tested, a motor drives a water inlet pipe changing rotating wheel support and a water outlet pipe changing rotating wheel support to rotate so as to adjust a corresponding required reducer pipe to a specified position, the axes of the water inlet reducer pipe and the water outlet reducer pipe are respectively aligned with the axes of a telescopic water inlet pipe and a telescopic water outlet pipe, then the telescopic water inlet pipe extends rightwards until the left end flange face of the water inlet reducer pipe is attached, the telescopic water outlet pipe extends leftwards until the water outlet reducer pipe is attached, the water inlet reducer pipe is clamped through a water inlet pipe clamping device, the water outlet pipe clamping device clamps the water outlet reducer pipe, and finally the telescopic water inlet pipe and the telescopic water outlet pipe continue to extend out so that the right end flange face of the water inlet reducer pipe and the left end flange face of the water outlet reducer pipe respectively compress the inlet and outlet flange faces of the water pump to be tested.
Compared with the prior art, the invention has the following advantages and effects: overall structure design is simple reasonable, safe and reliable, and convenient operation realizes automatic change reducing piezometer tube, replaces manual operation, reduces measurement personnel's intensity of labour, improves detection efficiency.
Drawings
Fig. 1 is a schematic view of an overall assembly structure of an embodiment of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
FIG. 3 is a schematic diagram of an overall axial assembly structure according to an embodiment of the present invention.
FIG. 4 is a block diagram of an automatic tube changing assembly according to an embodiment of the present invention.
FIG. 5 is an assembly view of the telescoping test tube and clamp assembly of the present invention.
FIG. 6 is an isometric view of a telescoping test tube and clamping assembly according to an embodiment of the invention
In the figure: the water inlet pipe comprises a water inlet pipe base 1, a telescopic water inlet pipe 2, a water inlet pipe clamping device 3, a water inlet pipe changing rotating wheel support 4, a water inlet pipe changing upper support 5, a water outlet pipe changing upper support 6, a water outlet pipe changing rotating wheel support 7, a water outlet reducer pipe 8, a water outlet pipe base 9, a water outlet pipe clamping device 10, a telescopic water outlet pipe 11, a lifting roller line 12, a water inlet reducer pipe 13, a water inlet pipe bearing with seat 14, a telescopic pipe sleeve 15, a coupler 16, a motor 17 and a water outlet pipe bearing with seat 18;
outlet pipe clamping device 10: the device comprises a clamping turning plate 10-1, a clamping device telescopic rod 10-2, a clamping device turning plate support 10-3, a clamping device telescopic sleeve 10-4 and a clamping device support 10-5.
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 are given.
Referring to fig. 1 to 6, the automatic pipe replacing device for testing the vertical centrifugal pump in this embodiment includes a water inlet pipe base 1, a telescopic water inlet pipe 2, a water inlet pipe clamping device 3, a water inlet pipe replacing wheel support 4, a water inlet pipe replacing upper support 5, a water outlet pipe replacing wheel support 7, a water outlet reducer pipe 8, a water outlet pipe base 9, a water outlet pipe clamping device 10, a telescopic water outlet pipe 11, a water inlet reducer pipe 13, a water inlet pipe bearing with seat 14, and a water outlet pipe bearing with seat 18.
The left end of the water inlet pipe changing rotating wheel support 4 is installed on the water inlet pipe base 1 and is connected with a motor installed inside the water inlet pipe base 1 through a coupler. The right end of the water inlet pipe replacing rotating wheel support 4 is installed on the water inlet pipe replacing upper support 5 through the water inlet pipe with the seat bearing 14, and the water inlet pipe replacing upper support 5 is installed on the upper top surface of the water inlet pipe base 1.
The right end of the water outlet pipe changing rotating wheel support 7 is arranged in the water outlet pipe base 9 and is connected with the motor 17 through the coupler 16, and the motor 17 is arranged in the water outlet pipe base 9; the left end of the water outlet pipe changing rotating wheel support 7 is arranged on the water outlet pipe changing upper support 6 through a water outlet pipe bearing with a seat 18, and the water outlet pipe changing upper support 6 is arranged on the upper top surface of the water outlet pipe base 9.
In the embodiment, a plurality of through holes are formed in the water inlet pipe changing rotating wheel support 4, and the water inlet reducer 13 is arranged in the through holes of the water inlet pipe changing rotating wheel support 4; the pipe changing rotating wheel bracket 7 is provided with a plurality of through holes, and the water outlet reducer 8 is arranged in the through holes of the water outlet pipe changing rotating wheel bracket 7.
The water outlet pipe clamping device 10 is installed on a telescopic water outlet pipe 11 and comprises a clamping turning plate 10-1, a clamping device telescopic rod 10-2, a clamping device turning plate support 10-3, a clamping device telescopic sleeve 10-4 and a clamping device support 10-5, wherein the clamping device telescopic sleeve 10-4 and the clamping device telescopic rod 10-2 form a hydraulic cylinder, the telescopic function of the clamping device telescopic rod 10-2 is achieved, when the clamping device telescopic rod 10-2 extends forwards, the clamping turning plate 10-1 rotates around a pivot of the clamping device turning plate support 10-3, and finally the flange end face of the water outlet reducer pipe 8 is clamped, so that the water outlet reducer pipe 8 can be simultaneously stretched along with the telescopic water outlet pipe 11.
In the embodiment, a water inlet pipe base 1 is connected with a water outlet pipe base 9, a telescopic water inlet pipe 2 is connected with a telescopic water outlet pipe 11, and a telescopic pipe sleeve 15 is connected with the telescopic water outlet pipe 11; the water inlet pipe clamping device 3 and the water outlet pipe clamping device 10, the water inlet pipe replacing rotating wheel support 4 and the water outlet pipe replacing rotating wheel support 7, the water inlet pipe replacing upper support 5 and the water outlet pipe replacing upper support 6, the water inlet pipe bearing with seat 14 and the water outlet pipe bearing with seat 18 are respectively symmetrical about the central line of the lifting roller line 12 in the figure 1.
The number and size of the through holes of the water inlet pipe changing rotating wheel support 4 and the water outlet pipe changing rotating wheel support 7 are set according to the number and size of the required reducer pipes.
Before the water pump test of this embodiment, press from both sides tight inlet reducer 13 through inlet tube clamping device 3, outlet pipe clamping device 10 presss from both sides tight outlet reducer 8.
The working process of the vertical centrifugal pump in the embodiment for testing and automatically replacing the pipe is as follows: before the water pump is tested, the water pump to be tested is conveyed to a position to be tested through a lifting roller line 12, a motor drives a water inlet pipe changing roller bracket 4 and a water outlet pipe changing roller bracket 7 to rotate according to the inlet and outlet calibers of the water pump to be tested so as to adjust the required reducer pipes to the specified positions, the axes of the water inlet pipe changing roller 13 and the water outlet pipe changing roller bracket 8 are respectively aligned with the axes of a telescopic water inlet pipe 2 and a telescopic water outlet pipe 11, then the telescopic water inlet pipe 2 extends out towards the right side of the paper surface of figure 1 until being attached to the left end flange end surface of the water inlet pipe changing roller 13, the telescopic water outlet pipe 11 extends out towards the left side of the paper surface of figure 1 until being attached to the water outlet pipe changing roller 8, the water inlet pipe changing roller 13 is clamped through a water inlet pipe clamping device 3, and the water outlet pipe clamping device 10 clamps the water changing roller pipe 8, and finally, the telescopic water inlet pipe 2 and the telescopic water outlet pipe 11 continue to extend out, so that the flange surface at the right end of the water inlet reducer 13 and the flange surface at the left end of the water outlet reducer 8 are respectively pressed against the flange surfaces of the inlet and the outlet of the water pump to be measured.
In this embodiment, the shaft coupling 16 and the motor 17 are respectively arranged on the left and right sides of the center line of the lifting roller line 12 in fig. 1, and are respectively used for driving the rotation of the water inlet pipe changing wheel support 4 and the water outlet pipe changing wheel support 7.
In this embodiment, the motor 17 is a servo motor, and may be replaced by a stepping motor when the requirement for rotational positioning accuracy is not high.
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 (6)
1. The utility model provides an automatic tub device that trades of vertical centrifugal pump test, including inlet tube base (1), flexible inlet tube (2), inlet tube clamping device (3), it trades a tub runner support (4) to intake, it trades tub upper bracket (5) to intake, go out water and trades tub upper bracket (6), it trades tub runner support (7) to go out water, play water reducer pipe (8), outlet pipe base (9), outlet pipe clamping device (10), flexible outlet pipe (11), it reducer pipe (13) to intake, inlet tube area seat bearing (14) and outlet pipe area seat bearing (18), its characterized in that: the structure of the water inlet pipe clamping device (3) is the same as that of the water outlet pipe clamping device (10), the water outlet pipe clamping device (10) is installed on the telescopic water outlet pipe (11), and the water inlet pipe clamping device (3) is installed on the telescopic water inlet pipe (2); the left end of the water inlet pipe replacing rotating wheel support (4) is installed on the water inlet pipe base (1), the right end of the water inlet pipe replacing rotating wheel support (4) is installed on the water inlet pipe replacing upper support (5) through a water inlet pipe bearing with a seat (14), and the water inlet pipe replacing upper support (5) is installed on the upper top surface of the water inlet pipe base (1); the right end of the water outlet pipe changing rotating wheel support (7) is arranged in the water outlet pipe base (9), the left end of the water outlet pipe changing rotating wheel support (7) is arranged on the water outlet pipe changing upper support (6) through a water outlet pipe bearing with a seat (18), and the water outlet pipe changing upper support (6) is arranged on the upper top surface of the water outlet pipe base (9); a plurality of through holes are formed in the water inlet pipe changing rotating wheel support (4), and the water inlet reducer pipe (13) is installed in the plurality of through holes of the water inlet pipe changing rotating wheel support (4); a plurality of through holes are formed in the water outlet pipe changing rotating wheel support (7), and the water outlet reducer pipe (8) is arranged in the plurality of through holes of the water outlet pipe changing rotating wheel support (7); the water outlet pipe clamping device (10) comprises a clamping turning plate (10-1), a clamping device telescopic rod (10-2), a clamping device turning plate support (10-3), a clamping device telescopic sleeve (10-4) and a clamping device support (10-5), the clamping device telescopic sleeve (10-4) and the clamping device telescopic rod (10-2) form a hydraulic cylinder, the clamping device support (10-5) is connected with the clamping device telescopic rod (10-2), when the clamping device telescopic rod (10-2) extends forwards, the clamping turning plate (10-1) rotates around a pivot of the clamping device turning plate support (10-3), and a flange end face of the water outlet reducer pipe (8) is clamped, so that the water outlet reducer pipe (8) can stretch out and draw back along with the telescopic water outlet pipe (11) simultaneously.
2. The vertical centrifugal pump test automatic tube changing device according to claim 1, wherein: the water inlet pipe changing rotating wheel support is characterized by further comprising a coupler (16) and a motor (17), wherein the coupler (16) and the motor (17) are respectively arranged on the left side and the right side of the center line of the lifting roller line (12) in a symmetrical mode and are respectively used for driving the water inlet pipe changing rotating wheel support (4) and the water outlet pipe changing rotating wheel support (7) to rotate.
3. The vertical centrifugal pump test automatic tube changing device according to claim 2, wherein: the right end of the water outlet pipe changing rotating wheel support (7) is connected with a motor (17) arranged in the water outlet pipe base (9) through a coupler (16); the left end of the water inlet pipe changing rotating wheel support (4) is connected with a motor arranged in the water inlet pipe base (1) through a coupler.
4. The vertical centrifugal pump test automatic tube changing device according to claim 1, wherein: the water inlet pipe replacement device is characterized by further comprising a lifting roller line (12), wherein the water inlet pipe base (1) and the water outlet pipe base (9), the telescopic water inlet pipe (2) and the telescopic water outlet pipe (11), the water inlet pipe clamping device (3) and the water outlet pipe clamping device (10), the water inlet pipe replacement rotating wheel support (4) and the water outlet pipe replacement rotating wheel support (7), the water inlet pipe replacement upper support (5) and the water outlet pipe replacement upper support (6), and the water inlet pipe bearing with seat (14) and the water outlet pipe bearing with seat (18) are respectively symmetrical about the central line of the lifting roller line (12).
5. The vertical centrifugal pump test automatic tube changing device according to claim 1, wherein: the number and the size of the through holes of the water inlet pipe changing rotating wheel support (4) and the water outlet pipe changing rotating wheel support (7) are set according to the number and the size of the required reducer pipes.
6. A working method of a vertical centrifugal pump testing automatic pipe replacing device adopts the vertical centrifugal pump testing automatic pipe replacing device as claimed in any one of claims 1-5, and is characterized in that: the specific process is as follows: before the water pump test, the water pump to be tested is sent to the position to be tested through a lifting roller line (12), according to the inlet and outlet calibers of the water pump to be tested, a motor (17) drives a water inlet pipe changing rotating wheel support (4) and a water outlet pipe changing rotating wheel support (7) to rotate so as to adjust a corresponding required reducer pipe to a specified position, the axes of the water inlet reducer pipe (13) and the water outlet reducer pipe (8) are respectively aligned with the axes of a telescopic water inlet pipe (2) and a telescopic water outlet pipe (11), then the telescopic water inlet pipe (2) stretches out to the right until the flange end face of the left end of the water inlet reducer pipe (13) is attached, the water inlet reducer pipe (13) is clamped through a water inlet pipe clamping device (3), the water outlet reducer pipe clamping device (10) clamps the water outlet reducer pipe (8), and finally the telescopic water inlet pipe (2) and the telescopic water outlet pipe (11) continue to stretch out to enable the flange face of the right end of the water inlet reducer pipe (13) and the flange face of the left end of the water outlet reducer pipe (8) to be attached The end flange faces respectively press the inlet and outlet flange faces of the water pump to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011572470.7A CN112814924B (en) | 2020-12-25 | 2020-12-25 | Automatic pipe replacing device for vertical centrifugal pump test and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011572470.7A CN112814924B (en) | 2020-12-25 | 2020-12-25 | Automatic pipe replacing device for vertical centrifugal pump test and working method thereof |
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| Publication Number | Publication Date |
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| CN112814924A CN112814924A (en) | 2021-05-18 |
| CN112814924B true CN112814924B (en) | 2022-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011572470.7A Active CN112814924B (en) | 2020-12-25 | 2020-12-25 | Automatic pipe replacing device for vertical centrifugal pump test and working method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014505A (en) * | 1987-08-18 | 1991-05-14 | Rieter Machine Works, Ltd. | Apparatus for changing bobbin tubes and tube gripper therefor |
| CN201301800Y (en) * | 2008-11-27 | 2009-09-02 | 上海东方泵业(集团)有限公司 | Fast clamping device for pump test |
| CN102635559A (en) * | 2012-04-10 | 2012-08-15 | 山东省农业机械科学研究所 | Closed pipeline device of pump test system |
| CN206929096U (en) * | 2017-06-27 | 2018-01-26 | 苏州赟羽机电科技有限公司 | A kind of parallel water pump device |
| 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 |
-
2020
- 2020-12-25 CN CN202011572470.7A patent/CN112814924B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014505A (en) * | 1987-08-18 | 1991-05-14 | Rieter Machine Works, Ltd. | Apparatus for changing bobbin tubes and tube gripper therefor |
| CN201301800Y (en) * | 2008-11-27 | 2009-09-02 | 上海东方泵业(集团)有限公司 | Fast clamping device for pump test |
| CN102635559A (en) * | 2012-04-10 | 2012-08-15 | 山东省农业机械科学研究所 | Closed pipeline device of pump test system |
| CN206929096U (en) * | 2017-06-27 | 2018-01-26 | 苏州赟羽机电科技有限公司 | A kind of parallel water pump device |
| 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 |
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| CN112814924A (en) | 2021-05-18 |
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Inventor after: Qian Leping Inventor after: Shen Xiaoli Inventor after: Tao Renhe Inventor after: Huang Jianjun Inventor after: Li Pengxiang Inventor after: Liu Tongbang Inventor after: Shao Zhongkui Inventor after: Zhang Yong Inventor after: Guo Jia Inventor after: Wang Jiayu Inventor before: Qian Leping Inventor before: Tao Renhe Inventor before: Huang Jianjun Inventor before: Li Pengxiang Inventor before: Liu Tongbang Inventor before: Shao Zhongkui Inventor before: Zhang Yong Inventor before: Guo Jia Inventor before: Wang Jiayu |