CN112393871B - Cross-flow fan drop test tool - Google Patents
Cross-flow fan drop test tool Download PDFInfo
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- CN112393871B CN112393871B CN202011337490.6A CN202011337490A CN112393871B CN 112393871 B CN112393871 B CN 112393871B CN 202011337490 A CN202011337490 A CN 202011337490A CN 112393871 B CN112393871 B CN 112393871B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a through-flow fan blade drop test tool, which comprises: a bracket; the bearing assembly comprises a baffle plate and a supporting plate which are overlapped from top to bottom, the baffle plate is fixedly connected with the bracket, and one end of the supporting plate is provided with a strip-shaped notch; the power assembly is fixed on the bracket and is provided with a movable part which is connected with the supporting plate and can drive the supporting plate to translate along the length direction of the notch; when the cross-flow fan blades are placed on the supporting plate, the edges of the baffle plates are in contact with the circumferential outer surfaces of the cross-flow fan blades. Based on the technical scheme of the invention, the supporting of the supporting plate and the automatic separation of the supporting plate and the tested fan blade are realized by utilizing the matching of the supporting component and the power component, so that the manual labor is reduced, the verticality of the tested fan blade is ensured when the tested fan blade falls, and the testing efficiency and accuracy are greatly improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a through-flow fan blade drop test tool.
Background
The cross-flow fan blade is an important part of the air conditioner, and the firmness of the connection between the steel shaft and the end cover directly determines whether the fan blade can keep structural integrity in the transportation process of the air conditioner and can be normally used in the long-term use process. In order to test the strength of the connection part of the steel shaft and the end cover, the vertical drop test can be carried out in the production process of the cross-flow fan blade, and the method for the vertical drop test of the steel shaft of the cross-flow fan blade is as follows:
firstly, fixing a shaft sleeve end of a cross-flow fan blade, enabling the axial direction of the fan blade to be perpendicular to the ground, enabling a steel shaft end to be downward, and lifting the fan blade to a height from the tail end of the steel shaft to the ground H; then loosening the cross-flow fan blade to enable the cross-flow fan blade to freely fall on the horizontal cement floor (when the weight of the cross-flow fan blade is less than or equal to 700g, H is 300mm; the weight of the cross-flow fan blade is more than 700g, and H is 250 mm). After the vertical drop test is required, the end cover of the through-flow fan blade has no crack and damage, the steel shaft has no looseness, the surface of the blade has no crack, damage and deformation, and the balance sheet does not fall off.
The currently used testing method needs manual operation, during testing, a tester lifts the fan blade by hand and lifts the fan blade to a specific height, the required height of the test is the height between the steel shaft and the ground, and the height is lower. Because the height that tests the requirement is lower, and the fan blade is generally longer, when single test, the test personnel can't directly observe the height between steel shaft and the ground to the height of difficult accurate control fan blade steel shaft from ground has very big influence to the test accuracy, generally needs two people to assist to accomplish the test, and is comparatively inconvenient. Moreover, the perpendicularity of the fan blade and the ground is difficult to control by manually holding the fan blade, and the test accuracy is also affected.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a cross-flow fan blade drop test tool, which utilizes the cooperation of a bearing component and a power component to realize the support of a bearing plate and the automatic separation of the bearing plate and a tested fan blade, reduces the manual labor, ensures the verticality of the tested fan blade when the tested fan blade drops, and greatly improves the test efficiency and accuracy.
The invention relates to a through-flow fan blade drop test tool, which comprises:
A bracket;
the bearing assembly comprises a baffle plate and a supporting plate which are overlapped from top to bottom, the baffle plate is fixedly connected with the bracket, one end of the supporting plate is provided with a strip-shaped notch, and the end part of the supporting plate where the notch is positioned is U-shaped;
the power assembly is fixed on the bracket and is provided with a movable part which is connected with the supporting plate and can drive the supporting plate to translate along the length direction of the notch;
When the cross-flow fan blade is placed on the supporting plate, the steel shaft of the cross-flow fan blade is positioned in the notch, and the edge of the baffle plate is in contact with the circumferential outer surface of the cross-flow fan blade.
In one embodiment, the test fixture has a first support assembly and a second support assembly, the first support assembly and the second support assembly are respectively disposed above and below the power assembly and are staggered from each other, and the heights of two of the support plates respectively correspond to two test heights. Through this embodiment, the height of two layer boards in first bearing subassembly and the second bearing subassembly corresponds two kinds of test height respectively, and then can satisfy two kinds of test high test demands respectively, makes this test fixture can be applicable to the drop test of through-flow fan blade of different weight.
In one embodiment, the axes of projection of the two pallets in the first and second support assemblies on a horizontal plane are on the same straight line, and the ends of the notches of the two pallets are far away from each other and the other ends are close to each other;
Wherein, the one end that two layer boards are close to each other all is connected movable part.
According to the embodiment, the movable part in the same power assembly is connected with the two supporting plates in the first supporting assembly and the second supporting assembly at the same time, so that the two supporting plates can be driven by single power, and the structure of the test tool is simplified.
In one embodiment, the movable portion is fixedly connected to a vertical connecting plate, and the top and bottom of the connecting plate are respectively connected to one ends of the two supporting plates of the first supporting member and the second supporting member, which are close to each other. Through this embodiment, two layer boards in first bearing subassembly and the second bearing subassembly are connected as an organic wholely through connecting plate and movable part, and two layer boards are Z shape structure with the connecting plate is whole, and the full realization utilizes single power to drive the technological effect of two layer boards.
In one embodiment, both of the pallets of the first and second support assemblies are in close proximity to the corresponding baffles. According to the embodiment, as the two supporting plates and the connecting plate are integrally in a Z-shaped structure, when the tested fan blade is placed on one supporting plate, the supporting plate has a sinking trend due to the gravity of the tested fan blade, and meanwhile, the other supporting plate has an upturned trend; the supporting plate is tightly attached to the baffle, so that the baffle can prevent the supporting plate from tilting upwards, and the supporting plate of the fan blade to be tested is placed without sinking; therefore, the technical effect of keeping the structure of the test tool stable is achieved.
In one embodiment, a first flange and a second flange extend outwards from the edge of the baffle, which is close to the notch, and the baffle, the first flange and the second flange are integrally Y-shaped;
when the cross-flow fan blade is placed on the supporting plate, the first retaining edge and the second retaining edge are contacted with the circumferential outer surface of the cross-flow fan blade.
Through this embodiment, first flange and second flange are located the both sides of baffle and cross-flow fan blade contact department, have increased the contact point with the cross-flow fan blade in both sides, guarantee that the cross-flow fan blade can not shift to both sides drunkenness in the horizontal direction, avoid the horizontal migration of cross-flow fan blade to influence the accuracy of test.
In one embodiment, the power component is a cylinder, the movable part is a telescopic end of the cylinder, and the telescopic end of the cylinder is fixedly connected with one end, far away from the notch, of the supporting plate. Through this embodiment, regard as power component with the cylinder, the structure and the function of cylinder are stable, reliable to the maneuverability of cylinder is good, the control of the tester of being convenient for.
In one embodiment, the cylinder is connected with a solenoid valve, and a button for controlling the solenoid valve is arranged on the solenoid valve. Through this embodiment, control the action of cylinder through the solenoid valve, control simple structure, simple operation are convenient for test personnel's control.
In one embodiment, the support comprises two vertical struts and a cross beam arranged at the tops of the two struts, and the bearing assembly and the power assembly are both arranged below the cross beam.
In one embodiment, a horizontal mounting plate is fixed to the lower surface of the cross beam, and the power assembly is fixed to the lower surface of the mounting plate.
The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present invention can be achieved.
Compared with the prior art, the through-flow fan blade drop test tool provided by the invention has at least the following beneficial effects:
According to the cross-flow fan blade drop test tool, the tested fan blade is placed by adopting the bearing assembly consisting of the supporting plate and the baffle, the supporting plate of the bearing assembly has a certain height and is matched with the height required by the test, the fan blade is not required to be lifted and kept at a specific height manually, the assistance of other personnel is not required, the labor intensity of the personnel is reduced, the waste of human resources is reduced, and the operation convenience is improved. Meanwhile, the power assembly drives the supporting plate to move, so that the tested fan blade and the supporting plate are separated and fall freely to perform the falling test, the time consumption is short, the operation is simple and convenient, the verticality of the tested fan blade in falling can be ensured, and the testing efficiency and accuracy are greatly improved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 shows a perspective view of the structure of the test device of the present invention;
FIG. 2 shows an exploded view of the structure shown in FIG. 1;
FIG. 3 shows a partial enlarged view at A in FIG. 2;
FIG. 4 shows a front view of the structure shown in FIG. 1;
FIG. 5 shows a top view of the structure shown in FIG. 1;
FIG. 6 shows a schematic view of the testing device of the present invention in use.
In the drawings, like parts are designated with like reference numerals. The figures are not to scale.
Reference numerals:
10-bracket, 11-pillar, 12-beam, 13-mounting plate, 20-bearing component, 201-first bearing component, 202-second bearing component, 21-baffle, 211-first flange, 212-second flange, 22-pallet, 221-notch, 30-power component, 31-movable part, 32-connecting plate, 33-solenoid valve, 331-button, 40-tested fan blade.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The invention provides a through-flow fan blade drop test tool, which comprises:
A bracket 10;
The supporting component 20, the supporting component 20 includes baffle 21 and pallet 22 that overlap from top to bottom, the baffle 21 is fixedly connected with support 10, one end of pallet 22 has notched 221 of the strip, the end of pallet 22 where notched 221 locates takes the shape of U;
The power assembly 30, the power assembly 30 is fixed on the bracket 10, the power assembly 30 is provided with a movable part 31, and the movable part 31 is connected with the supporting plate 22 and can drive the supporting plate 22 to translate along the length direction of the notch 221;
When the through-flow fan blade is placed on the supporting plate 22, the steel shaft of the through-flow fan blade is located in the notch 221, and the edge of the baffle 21 is in contact with the circumferential outer surface of the through-flow fan blade.
Specifically, as shown in the accompanying drawings, the test fixture of the present invention mainly comprises a bracket 10, a bearing assembly 20 and a power assembly 30, wherein the bearing assembly 20 and the power assembly 30 are arranged on the bracket 10, and the bearing assembly 20 is used for placing tested fan blades 40; wherein the support assembly 20 has a fixed set height, and in particular the distance between the upper surface of the pallet 22 in the support assembly 20 and the floor is equal to the test height required for testing. The distances between the tail ends of the steel shafts of the currently used fan blades of different types and the end covers are consistent, but the structures of the fan blades, the diameters of the fan blades, the lengths, the weights and the sections are different, so that the height from the tail ends of the steel shafts to the ground can be controlled by only controlling the height of the end covers, and the detected fan blades 40 are towed by the support plates 22 with fixed heights, so that the height of the detected fan blades 40 meets the height required by the test.
When the tested fan blade 40 is placed on the supporting plate 22, the end cover is in stable contact with the upper surface of the supporting plate 22, the steel shaft of the tested fan blade 40 is accommodated in the notch 221, at the moment, the tested fan blade 40 is kept static in a posture that the axis is perpendicular to the ground on the test height, and the edge of the baffle 21 is in contact with the circumferential outer surface of the tested fan blade 40. Then, the power assembly 30 is controlled to operate, the movable part 31 in the power assembly 30 moves and drives the U-shaped end part of the support plate 22 to horizontally move towards one side of the baffle plate 21, the tested fan blade 40 cannot move along with the support plate 22 due to the blocking of the baffle plate 21, the lower end of the tested fan blade 40 cannot skew towards the moving direction of the support plate due to inertia, and the tested fan blade 40 is still and moves relative to the support plate 22. When the support plate 22 moves to be separated from the tested fan blade 40, the steel shaft of the tested fan blade 40 moves out of the notch 221 relatively, the end cover is separated from the support plate 22, the tested fan blade 40 loses the support of the support plate 22 and falls vertically, the tail end of the steel shaft collides with the ground, and at the moment, the U-shaped end of the support plate 22 moves to be below the baffle 21 completely. Checking whether the end cover of the tested fan blade 40 has cracks and damages, loosening the steel shaft, and preventing the surface of the fan blade from cracking, damaging and deforming, and the balance sheet is separated, so as to obtain the test result of the tested fan blade 40 according to the checking result.
Before the test, it was checked whether the U-shaped end of the pallet 22 was in the extended state or the retracted state below the shutter 21; if the U-shaped end of the supporting plate 22 is retracted below the baffle 21, the tested fan 40 cannot be placed on the supporting plate 22, and the power assembly 30 needs to be controlled to operate once to extend the U-shaped end of the supporting plate 22.
Further, when the U-shaped end of the pallet 22 is extended, the notch 221 still extends to the area under the baffle 21 covered by the baffle 21. As shown in figure 5 of the drawings.
In one embodiment, the test fixture has a first support member 201 and a second support member 202, the first support member 201 and the second support member 202 are disposed above and below the power member 30, respectively, and are offset from each other, and the heights of the two pallets 22 respectively correspond to the two test heights.
Specifically, the heights of the two supporting plates 22 in the first supporting component 201 and the second supporting component 202 respectively correspond to the two test heights, so that the test requirements of the two test heights can be met respectively; in the embodiment, when the weight of the cross-flow fan blade is less than or equal to 700g, the test height is 300mm; the weight of the cross-flow fan blade is more than 700g, the test height is 250mm, and the test fixture can be suitable for drop tests of the cross-flow fan blades with different weights.
In one embodiment, the axes of projection of the two pallets 22 in the first and second support assemblies 201, 202 on a horizontal plane are collinear, and the notches 221 of the two pallets 22 are located at one end away from each other and at the other end close to each other;
Wherein, the movable parts 31 are connected to one ends of the two supporting plates 22, which are close to each other.
Specifically, the movable part 31 of the same power unit 30 connects the two pallets 22 of the first and second support units 201 and 202 at the same time, so that the two pallets 22 can be driven by a single power, thereby simplifying the structure of the test fixture. In this embodiment, at the same time, the two pallets 22 are different in state, i.e., one pallet 22 is in a state of being retracted below the baffle 21, and the other pallet 22 is in an extended state; and the first supporting component 201 and the second supporting component 202 are used for alternately testing the tested fan blade 40.
In one embodiment, the movable portion 31 is fixedly connected to a vertical connecting plate 32, and the top and bottom of the connecting plate 32 are connected to the ends of the two pallets 22 of the first and second support assemblies 201, 202, respectively, which are adjacent to each other.
Specifically, as shown in fig. 4 of the drawings, the two supporting plates 22 of the first supporting member 201 and the second supporting member 202 are integrally connected with the movable portion 31 through the connecting plate 32, and the two supporting plates 22 and the connecting plate 32 are integrally formed in a Z-shaped structure, so that the technical effect of driving the two supporting plates 22 by using a single power is fully achieved.
In one embodiment, both pallets 22 in the first and second support assemblies 201, 202 are in close proximity to the corresponding baffles 21.
Specifically, since the two pallets 22 are integrally formed with the connection plate 32 in a Z-shaped structure, the two pallets 22 integrally form with the connection plate 32 a lever structure having a fulcrum at the movable portion 31. When a tested fan blade 40 is placed on one supporting plate 22, the supporting plate 22 has a sinking trend due to the gravity of the tested fan blade 40, and the other supporting plate 22 has an upturned trend due to the lever principle; the baffle plate 21 prevents the upward tilting of the baffle plate 22 because the baffle plate 22 is tightly attached to the baffle plate 21, and the baffle plate 22 is not sunk even when the tested fan blade 40 is placed; therefore, the technical effect of keeping the structure of the test tool stable is achieved.
In one embodiment, the edge of the baffle 21 near the notch 221 extends outwards to form a first flange 211 and a second flange 212, and the baffle 21, the first flange 211 and the second flange 212 are integrally Y-shaped;
When the through-flow fan blade is placed on the supporting plate 22, the first blocking edge 211 and the second blocking edge 212 are both contacted with the circumferential outer surface of the through-flow fan blade.
Specifically, the first flange 211 and the second flange 212 are located at two sides of the contact position of the baffle 21 and the through-flow fan blade, and contact points with the through-flow fan blade are added at two sides, so that the through-flow fan blade is prevented from moving and shifting to two sides in the horizontal direction, and the accuracy of the test is prevented from being influenced by horizontal movement of the through-flow fan blade. In addition, the baffle 21, the first flange 211 and the second flange 212 are Y-shaped overall, so that the support assembly 2 can be further suitable for tested fan blades with different diameters in a certain range.
In one embodiment, the power assembly 30 is a cylinder, the movable portion 31 is a telescopic end of the cylinder, and the telescopic end of the cylinder is fixedly connected to an end of the support plate 22 away from the notch 221.
Specifically, according to practical situations, other power devices may be used for the power assembly 30, so long as the supporting plate 22 can be driven to move horizontally, for example, power devices such as a hydraulic cylinder and an electric push rod may be used.
Preferably, the cylinder is connected with a solenoid valve 33, and a button 331 for controlling the solenoid valve 33 is provided on the solenoid valve 33.
Specifically, the tester controls the electromagnetic valve 33 by pressing the button 331, thereby realizing that the control cylinder drives the pallet 22 to move. The actuating directions of the cylinders corresponding to the two pressing buttons 331 are different, that is, if the telescopic ends of the corresponding cylinders extend out when the pressing buttons 331 are pressed once, the telescopic ends of the corresponding cylinders retract when the pressing buttons 331 are pressed next. The telescopic end of the air cylinder extends or retracts for a certain distance, and the air cylinder with corresponding specification is set or adopted in advance.
In one embodiment, the stand 10 includes two vertical support posts 11 and a cross member 12 disposed atop the two support posts 11, with the support assembly 20 and the power assembly 30 each disposed below the cross member 12.
A horizontal mounting plate 13 is fixed to the lower surface of the cross beam 12, and a power assembly 30 is fixed to the lower surface of the mounting plate 13.
Specifically, as shown in fig. 4 of the drawings, the lower surface of the mounting plate 13 is connected with the power assembly 30, the baffle 21 of the second bearing assembly is fixedly connected with the lower surface of the power assembly 30, the pallet 22 of the second bearing assembly is positioned below the baffle 21 thereof, and one end of the pallet 22 is connected with the bottom of the connecting plate 32 of the movable part 31 of the power assembly 30; the first support member's apron 21 is attached to the upper surface of one side of the mounting plate 13 and the first support member's pallet 22 is positioned below its apron 21 and attached at one end to the top of the connecting plate 32 of the movable part 31 of the power assembly 30.
The vertical drop test process of the through-flow fan blade corresponding to the test tool comprises the following steps:
1. The U-shaped supporting plate 22 with the corresponding height is selected according to the weight of the fan blade.
2. It is checked whether the state of the corresponding pallet 22 is extended or retracted, and if it is retracted, the button 331 is pressed to extend the pallet 22.
3. The tested fan blade 40 is placed on the U-shaped end of the supporting plate 22 according to the downward direction of the steel shaft, the steel shaft passes through the notch 221 on the supporting plate 22, and the circumferential surface of the tested fan blade 40 is contacted with the edge of the baffle plate 21 and the two flanges on the baffle plate 21.
4. Pressing button 331, solenoid valve 33 controls the cylinder to drive the pallet 22 to retract, and the tested fan blade 40 falls to the ground freely after losing the support of pallet 22 to the bottom, thus completing the test.
5. Checking whether the end cover of the tested fan blade 40 has cracks, damages and looseness of the steel shaft, whether the surface of the fan blade has cracks, damages and deformations, and whether the balancing piece falls off.
In the description of the present invention, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (7)
1. A cross-flow fan blade drop test fixture is characterized by comprising:
A bracket;
the bearing assembly comprises a baffle plate and a supporting plate which are overlapped from top to bottom, the baffle plate is fixedly connected with the bracket, one end of the supporting plate is provided with a strip-shaped notch, and the end part of the supporting plate where the notch is positioned is U-shaped;
the power assembly is fixed on the bracket and is provided with a movable part which is connected with the supporting plate and can drive the supporting plate to translate along the length direction of the notch;
When the cross-flow fan blade is placed on the supporting plate, the steel shaft of the cross-flow fan blade is positioned in the notch, and the edge of the baffle plate is contacted with the circumferential outer surface of the cross-flow fan blade; when the U-shaped end of the supporting plate extends out relative to the baffle, the notch still extends to the area below the baffle and covered by the baffle;
The test fixture is provided with a first bearing component and a second bearing component, the first bearing component and the second bearing component are respectively arranged above and below the power component and are staggered with each other, the heights of two supporting plates in the first bearing component and the second bearing component respectively correspond to two test heights, and one ends of the notches of the two supporting plates are far away from each other, and the other ends of the notches of the two supporting plates are close to each other;
The movable part is fixedly connected with a vertical connecting plate, the top and the bottom of the connecting plate are respectively connected with one ends of the first bearing component and the second bearing component, which are close to each other, of the two supporting plates, and the first bearing component and the second bearing component are respectively clung to the corresponding baffle plates.
2. The cross-flow fan blade drop test tooling of claim 1, wherein the axes of projection of the two pallets in the first and second support assemblies on a horizontal plane are on the same straight line;
Wherein, the one end that two layer boards are close to each other all is connected movable part.
3. The through-flow fan blade drop test fixture according to claim 1 or 2, wherein a first flange and a second flange extend outwards from the edge of the baffle plate, which is close to the notch, and the baffle plate, the first flange and the second flange are integrally Y-shaped;
when the cross-flow fan blade is placed on the supporting plate, the first retaining edge and the second retaining edge are contacted with the circumferential outer surface of the cross-flow fan blade.
4. The cross-flow fan blade drop test tool according to claim 1, wherein the power component is an air cylinder, the movable part is a telescopic end of the air cylinder, and the telescopic end of the air cylinder is fixedly connected with one end, far away from the notch, of the supporting plate.
5. The through-flow fan blade drop test fixture of claim 4, wherein the air cylinder is connected with an electromagnetic valve, and a button for controlling the electromagnetic valve is arranged on the electromagnetic valve.
6. The cross-flow fan blade drop test fixture of claim 1, wherein the bracket comprises two vertical struts and a cross beam arranged at the tops of the two struts, and the bearing assembly and the power assembly are both arranged below the cross beam.
7. The cross-flow fan blade drop test tool of claim 6, wherein a horizontal mounting plate is fixed on the lower surface of the cross beam, and the power assembly is fixed on the lower surface of the mounting plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011337490.6A CN112393871B (en) | 2020-11-25 | 2020-11-25 | Cross-flow fan drop test tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011337490.6A CN112393871B (en) | 2020-11-25 | 2020-11-25 | Cross-flow fan drop test tool |
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| CN112393871B true CN112393871B (en) | 2024-10-15 |
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| CN113405756A (en) * | 2021-06-15 | 2021-09-17 | 安徽朗迪叶轮机械有限公司 | Height-adjustable cross-flow fan blade drop test tool |
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| TWI473991B (en) * | 2011-03-07 | 2015-02-21 | Hon Hai Prec Ind Co Ltd | Drop test apparatus |
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| KR20180046063A (en) * | 2016-10-27 | 2018-05-08 | 최상만 | Dropping test device of gas container |
| CN107777267A (en) * | 2017-11-21 | 2018-03-09 | 上海赛科利汽车模具技术应用有限公司 | The pallet of collecting and sending conveyer stops positioner |
| CN109835709A (en) * | 2017-11-27 | 2019-06-04 | 浙江大学常州工业技术研究院 | A kind of lacquer painting detection device |
| CN110726524A (en) * | 2019-11-21 | 2020-01-24 | 格力电器（武汉）有限公司 | Drop test bench with high test efficiency |
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| CN206479308U (en) * | 2017-02-24 | 2017-09-08 | 华星美科新材料（江苏）有限公司 | Fire extinguisher fall-down test stage apparatus |
| CN209858164U (en) * | 2019-04-19 | 2019-12-27 | 广东艾斯瑞仪器科技有限公司 | Double-station drop test equipment |
| CN213456048U (en) * | 2020-11-25 | 2021-06-15 | 格力电器（武汉）有限公司 | Through-flow fan blade drop test tool |
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