Impeller hardness detection device

Abstract

The utility model provides an impeller hardness detection device which comprises a hardness detection device body, a support and an air cylinder, and the hardness detection device body is installed at the top of the support; the hardness detection device body comprises a base, a hardness detector support, a hardness detector and a sliding block assembly, the hardness detector support is installed on the base, and the hardness detector is installed on one side of the hardness detector support and is in transmission connection with a piston rod of the air cylinder; the sliding block assembly is arranged on one side of the hardness detector, the bottom of the sliding block assembly is arranged in a sliding rail on the base in a sliding mode, the top of the sliding block assembly is used for installing and positioning the impeller, and a hardness measuring head of the hardness detector is used for detecting the hardness of a hardness detection point position of the impeller to be detected. After the impeller is installed and positioned through the sliding block assembly and moved to a preset position, the air cylinder is controlled to drive the hardness measuring head to descend, measurement of the hardness of the impeller is achieved, the device is more stable and reliable compared with manual detection equipment, and production benefits are improved while the working intensity of workers is relieved.

Description

Technical Field

[0001] This utility model relates to the field of impeller technology, specifically to an impeller hardness testing device. Background Technology

[0002] Because BLDC impellers operate at high speeds, reaching up to 90,000 revolutions per minute, the strength requirements for the impeller body material are high. Currently, after the electrophoretic coating process, the impeller products are baked at high temperatures during the surface drying stage. There is a risk that the material hardness will decrease after annealing, causing the impeller to disintegrate and fail during high-speed operation. Therefore, a material hardness testing device is needed for impeller products after the electrophoretic coating process.

[0003] Patent document CN212567900U discloses a hardness testing device for blade and impeller machining. It includes an outer shell that can be pulled out from the bottom upwards. The top of the outer shell has several lower stepped holes arranged in a matrix. Lower fixing posts of suitable size are installed in the lower stepped holes and are slidably connected to the lower stepped holes. A connecting post is provided at the top edge of the outer shell, and the top of the connecting post is connected to an upper shell. A communicating cavity is provided in the middle of the connecting post, and the outer shell and the upper shell are connected through the communicating cavity. The upper shell has an annular hole and several upper stepped holes corresponding to the positions of the lower stepped holes. The main purpose of this invention is to provide a hardness testing device for blade and impeller machining that uses a large number of fixing posts to gradually contact the upper and lower surfaces of the blade under hydraulic pressure until complete contact. The end faces of the fixing posts form the same curved surface as the blade surface, providing a secure fixation and applicability to different impeller blade curved surfaces. However, this testing device is relatively complex and requires a large number of fixing posts to achieve impeller positioning. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide an impeller hardness testing device.

[0005] The impeller hardness testing device provided by this utility model includes a hardness testing device body, a bracket, and a cylinder, wherein the hardness testing device body is installed on the top of the bracket.

[0006] The hardness testing device body includes a base, a hardness tester bracket, a hardness tester, and a slider assembly. The hardness tester bracket is mounted on the base, and the hardness tester is mounted on one side of the hardness tester bracket. The hardness tester handle of the hardness tester is connected to the piston rod of the cylinder.

[0007] The slider assembly is disposed on one side of the hardness tester, and the bottom of the slider assembly is slidably disposed in the slide rail on the base. The top of the slider assembly is used to install and position the impeller to be tested. The hardness probe at the bottom of the hardness tester is used to detect the hardness of the hardness detection point at the edge of the impeller to be tested.

[0008] Preferably, the base has a longitudinal track at its top, and the slider assembly is slidably disposed in the longitudinal track and can move in a direction toward or away from the hardness tester.

[0009] Preferably, the slider assembly includes a longitudinal slider and a transverse slider, wherein the longitudinal slider is slidably disposed in the longitudinal track;

[0010] The transverse slider is slidably disposed in the transverse track at the top of the longitudinal slider, and the transverse slider is used to install and position the impeller to be tested.

[0011] Preferably, the transverse slider includes a shaft hole positioning block, a height positioning block, and a transverse slider body, the transverse slider body being slidably disposed in the transverse track;

[0012] The height positioning block is installed on the top of the transverse slider body. The height positioning block matches the mounting hole on the air inlet side of the impeller to be tested. The shaft hole positioning block is coaxially installed in the middle through hole of the height positioning block and the middle through hole of the transverse slider body.

[0013] When the impeller to be tested is installed on the horizontal slider, the height positioning block is coaxially installed in the mounting hole of the impeller to be tested, and the top surface of the height positioning block overlaps with the bottom of the mounting hole of the impeller to be tested, and the top of the shaft hole positioning block is inserted into the shaft hole of the impeller to be tested.

[0014] Preferably, a support lug is provided on one side of the bottom of the hardness tester bracket, and an outer diameter positioning component is installed on the top of the support lug;

[0015] One end of the outer diameter positioning component is movably mounted on the top of the support lug, and the other end of the outer diameter positioning component is an arc-shaped positioning part used to position the outer diameter of the impeller to be measured.

[0016] Preferably, the top of the support lug is provided with a mounting post, and one end of the outer diameter positioning member is provided with a waist-shaped hole, and the mounting post is rotatably and slidably installed in the waist-shaped hole.

[0017] Preferably, the hardness tester is fixedly mounted on the side of the hardness tester bracket by hardness tester fasteners.

[0018] Preferably, a hardness tester mounting groove is provided on one side of the hardness tester bracket, and the hardness tester includes a mounting part disposed in the hardness tester mounting groove and a hardness testing part located outside the hardness tester mounting groove.

[0019] The top of the mounting part is installed on the top of the hardness tester mounting slot by a hardness tester fastener. Symmetrical adjusting screws are provided on both sides of the mounting part. The two symmetrical adjusting screws pass through the two side walls of the hardness tester mounting slot and are threaded to the mounting part to adjust the lateral position of the hardness tester.

[0020] Preferably, an electrical box is installed inside the bracket, and a button is provided on the top of the bracket. The electrical box is electrically connected to the cylinder and the button, and the button is used to turn the cylinder on or off.

[0021] Preferably, the middle part of the hardness tester handle is rotatably mounted on the hardness tester bracket, the bottom of one end of the hardness tester handle is connected to the piston rod of the cylinder, the bottom of the other end of the hardness tester handle is connected to the top of the hardness tester, and the piston rod of the cylinder drives the hardness probe to descend by lifting.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This utility model has a simple structure and is easy to operate. The impeller is installed and positioned by a slider assembly. After moving to the preset position, the control cylinder drives the hardness probe to descend, thereby measuring the hardness of the impeller. Compared with manual testing equipment, this hardness testing device is more stable and reliable, reducing the workload of workers while improving production efficiency. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a structural schematic diagram of the present invention from a frontal view angle;

[0026] Figure 2 This is a structural schematic diagram of the present invention from a side view angle;

[0027] Figure 3 This is a top-view structural diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the impeller to be tested in this utility model;

[0029] Figure a is a half-sectional view of the impeller under test, Figure b is a structural diagram of the air inlet side of the impeller under test, and Figure c is a structural diagram of the air outlet side of the impeller under test.

[0030] Figure 5 This is a structural schematic diagram of the hardness testing device body from the main view angle of this utility model;

[0031] Figure 6 This is a side view of the hardness testing device body of this utility model.

[0032] Figure 7 This is a top view diagram of the assembly of the longitudinal slider and the transverse slider in this utility model;

[0033] Figure 8 This is a half-sectional view of the transverse slider in this utility model from a side perspective.

[0034] Figure 9 This is a top view of the structure of the impeller positioning hardness detection device body in this utility model.

[0035] Figure 10 This is a top-view structural diagram of the impeller positioning hardness testing device body of this utility model.

[0036] The diagram shows:

[0037] Hardness testing device body 1; Hardness tester fasteners 16

[0038] Hardness tester bracket 11, symmetrical adjustment screws 17

[0039] Hardness tester 12, longitudinal track 18

[0040] Hardness probe 121, outer diameter positioning component 19

[0041] Vertical slider 13, cylinder 2

[0042] Horizontal rail 131 Electrical box 3

[0043] Horizontal slider 14, button 4

[0044] Shaft hole positioning block 141 Impeller to be tested 5

[0045] Height positioning block 142, shaft hole 51

[0046] Horizontal slider body 143, hardness testing points 52

[0047] Hardness tester handle 15 Detailed Implementation

[0048] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0049] This utility model discloses an impeller hardness testing device. The impeller is installed and positioned by a slider assembly. After moving to a preset position, the control cylinder drives the hardness probe to descend, thereby measuring the hardness of the impeller. This hardness testing device has a simple structure, is easy to operate, and is more stable and reliable than manual testing equipment. It reduces the workload of workers while improving production efficiency.

[0050] According to the impeller hardness testing device provided by this utility model, such as Figure 1-3 As shown, the device includes a hardness testing device body 1, a bracket, and a cylinder 2. The hardness testing device body 1 is mounted on the top of the bracket. The cylinder 2 drives the hardness testing device body 1 to move, thereby realizing hardness testing.

[0051] like Figure 5 As shown, the hardness testing device body 1 includes a base, a hardness tester bracket 11, a hardness tester 12, and a slider assembly. The hardness tester bracket 11 is mounted on the base, and the hardness tester 12 is mounted on one side of the hardness tester bracket 11. The hardness tester handle 15 of the hardness tester 12 is connected to the piston rod of the cylinder 2. In a preferred embodiment, the middle part of the hardness tester handle 15 is rotatably mounted on the hardness tester bracket 11. The bottom of one end of the hardness tester handle 15 is connected to the piston rod of the cylinder 2, and the bottom of the other end of the hardness tester handle 15 is connected to the top of the hardness tester 12. After the impeller 5 to be tested is positioned, the piston rod of the cylinder 2 rises, driving one end of the hardness tester handle 15 to rise and the other end of the hardness tester handle 15 to fall, thereby driving the hardness probe 121 to fall, thus realizing the hardness testing of the impeller 5 to be tested.

[0052] like Figure 9 , Figure 10 As shown, the slider assembly is disposed on one side of the hardness tester 12, and the bottom of the slider assembly is slidably disposed in the slide rail on the base. The top of the slider assembly is used to install and position the impeller 5 to be tested. The hardness probe 121 at the bottom of the hardness tester 12 is used to detect the hardness of the hardness detection point 52 at the edge of the impeller 5 to be tested. A longitudinal rail 18 is provided on the top of the base, and the slider assembly is slidably disposed in the longitudinal rail 18 and can move in a direction closer to or away from the hardness tester 12.

[0053] like Figure 7As shown, the slider assembly includes a longitudinal slider 13 and a transverse slider 14. The longitudinal slider 13 is slidably disposed in the longitudinal track 18; the transverse slider 14 is slidably disposed in the transverse track 131 at the top of the longitudinal slider 13. The transverse slider 14 is used to mount and position the impeller 5 to be tested. After the impeller 5 to be tested is mounted on the transverse slider 14, it moves laterally and longitudinally through the transverse slider 14 and the longitudinal slider 13, thereby moving it directly below the hardness tester 11.

[0054] like Figure 8 As shown, the transverse slider 14 includes a shaft hole positioning block 141, a height positioning block 142, and a transverse slider body 143. The transverse slider body 143 is slidably disposed in the transverse track 131. The height positioning block 142 is installed on the top of the transverse slider body 143, and the height positioning block 142 matches the mounting hole on the air inlet side of the impeller 5 to be tested. The shaft hole positioning block 141 is coaxially installed in the middle through hole of the height positioning block 142 and the middle through hole of the transverse slider body 143. When the impeller 5 to be tested is installed on the transverse slider 14, the height positioning block 142 is coaxially installed in the mounting hole of the impeller 5 to be tested, and the top surface of the height positioning block 142 overlaps with the bottom of the mounting hole of the impeller 5 to be tested. The top of the shaft hole positioning block 141 is inserted into the shaft hole 51 of the impeller 5 to be tested. The shaft hole positioning block 141 and the height positioning block 142 can respectively realize the positioning of the impeller 5 to be tested in the horizontal direction and the positioning in the height direction.

[0055] like Figure 9 , Figure 10 As shown, a lug is provided on one side of the bottom of the hardness tester bracket 11, and an outer diameter positioning component 19 is installed on the top of the lug. One end of the outer diameter positioning component 19 is movably installed on the top of the lug, and the other end of the outer diameter positioning component 19 is an arc-shaped positioning part used to position the outer diameter of the impeller 5 to be tested. A mounting post is provided on the top of the lug, and one end of the outer diameter positioning component 19 is provided with a waist-shaped hole. The mounting post is rotatably and slidably installed in the waist-shaped hole.

[0056] like Figure 6As shown, the hardness tester 12 is fixedly mounted on the side of the hardness tester bracket 11 by hardness tester fasteners 16. A hardness tester mounting groove is provided on one side of the hardness tester bracket 11. The hardness tester 12 includes a mounting part disposed within the hardness tester mounting groove and a hardness testing part located outside the hardness tester mounting groove. The top of the mounting part is mounted to the top of the hardness tester mounting groove by the hardness tester fasteners 16. Symmetrical adjusting screws 17 are provided on both sides of the mounting part. The two symmetrical adjusting screws 17 pass through the two side walls of the hardness tester mounting groove and are threadedly connected to the mounting part, used to adjust the lateral position of the hardness tester 12. The width of the hardness tester mounting groove is slightly larger than the width of the mounting part of the hardness tester 12. By adjusting the symmetrical adjusting screws 17 on both sides, the lateral position of the hardness tester 12 can be finely adjusted to keep the hardness tester 12 centered.

[0057] In a preferred embodiment, an electrical box 3 is installed inside the bracket, and a button 4 is provided on the top of the bracket. The electrical box 3 is electrically connected to the cylinder 2 and the button 4, and the button 4 is used to turn the cylinder 2 on or off.

[0058] The working principle of this utility model is as follows:

[0059] With the air inlet of the impeller 5 to be tested facing downwards, use the shaft hole 51 of the lower plate for center positioning;

[0060] After the impeller 5 to be tested is positioned at the center reference, the transverse slider 14 is moved to one side, the longitudinal slider 13 is pushed forward to the end, and then the transverse slider 14 is pushed to the other side to the end, so that the outer diameter of the impeller 5 to be tested is against the outer diameter positioning part 19, thereby achieving outer diameter arc positioning.

[0061] Rotate the impeller 5 to be tested to adjust the angle, align the gap between the middle plates with the gauge probe, and then push it all the way down so that the gauge probe enters the gap between the middle plates of the impeller 5 to be tested to complete the product positioning.

[0062] Press the start button 4, the solenoid valve starts working, controlling the cylinder 2 to move upward and push the handle of the Webster hardness tester to perform the measurement.

[0063] After cylinder 2 is lifted to the position, the time relay starts to work, keeping cylinder 2 in place for 2-3 seconds to facilitate reading the test data. The operator can then judge whether the product is qualified based on the data displayed on the instrument.

[0064] After the device completes the measurement, it retracts the horizontal slider 14 and the vertical slider 13, removes the impeller 5 to be measured, replaces it with a new impeller 5 to be measured, and repeats the above actions.

[0065] This invention can adjust the longitudinal, transverse and outer diameter positioning according to the outer diameter and structure of the impeller 5 to be tested, and confirm the position of the measuring point to be tested, so as to achieve reliable hardness measurement.

[0066] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A device for detecting the hardness of an impeller, characterized in that, It includes a hardness testing device body (1), a bracket, and a cylinder (2), wherein the hardness testing device body (1) is mounted on the top of the bracket; The hardness testing device body (1) includes a base, a hardness testing instrument bracket (11), a hardness testing instrument (12), and a slider assembly. The hardness testing instrument bracket (11) is mounted on the base, and the hardness testing instrument (12) is mounted on one side of the hardness testing instrument bracket (11). The hardness testing instrument handle (15) of the hardness testing instrument (12) is connected to the piston rod of the cylinder (2) in a transmission connection. The slider assembly is set on one side of the hardness tester (12), and the bottom of the slider assembly is slidably set in the slide rail on the base. The top of the slider assembly is used to install and position the impeller (5) to be tested. The hardness probe (121) at the bottom of the hardness tester (12) is used to detect the hardness of the hardness detection point (52) at the edge of the impeller (5) to be tested.

2. The impeller hardness testing device according to claim 1, characterized in that, The base is provided with a longitudinal track (18) at the top, and the slider assembly is slidably disposed in the longitudinal track (18) and can move in the direction of approaching or moving away from the hardness tester (12).

3. The impeller hardness testing device according to claim 2, characterized in that, The slider assembly includes a longitudinal slider (13) and a transverse slider (14), wherein the longitudinal slider (13) is slidably disposed in the longitudinal track (18); The transverse slider (14) is slidably disposed in the transverse track (131) at the top of the longitudinal slider (13), and the transverse slider (14) is used to install and position the impeller (5) to be tested.

4. The impeller hardness testing device according to claim 3, characterized in that, The transverse slider (14) includes a shaft hole positioning block (141), a height positioning block (142), and a transverse slider body (143), which is slidably disposed in the transverse track (131). The height positioning block (142) is installed on the top of the transverse slider body (143). The height positioning block (142) matches the mounting hole on the air inlet side of the impeller (5) to be tested. The shaft hole positioning block (141) is coaxially installed in the middle through hole of the height positioning block (142) and the middle through hole of the transverse slider body (143). When the impeller (5) to be tested is installed on the transverse slider (14), the height positioning block (142) is coaxially installed in the mounting hole of the impeller (5) to be tested, and the top surface of the height positioning block (142) overlaps with the bottom of the mounting hole of the impeller (5) to be tested, and the top of the shaft hole positioning block (141) is inserted into the shaft hole (51) of the impeller (5) to be tested.

5. The impeller hardness testing device according to claim 1, characterized in that, The hardness tester bracket (11) has a support lug on one side of its bottom, and an outer diameter positioning component (19) is installed on the top of the support lug. One end of the outer diameter positioning component (19) is movably mounted on the top of the support ear, and the other end of the outer diameter positioning component (19) is an arc-shaped positioning part used to position the outer diameter of the impeller (5) to be tested.

6. The impeller hardness testing device according to claim 5, characterized in that, The top of the support lug is provided with a mounting post, and one end of the outer diameter positioning member (19) is provided with a waist-shaped hole. The mounting post can be rotatably and slidably installed in the waist-shaped hole.

7. The impeller hardness testing device according to claim 1, characterized in that, The hardness tester (12) is fixedly installed on the side of the hardness tester bracket (11) by hardness tester fasteners (16).

8. The impeller hardness testing device according to claim 7, characterized in that, The hardness tester bracket (11) has a hardness tester mounting groove on one side, and the hardness tester (12) includes a mounting part disposed in the hardness tester mounting groove and a hardness testing part located outside the hardness tester mounting groove. The top of the mounting part is mounted on the top of the hardness tester mounting slot by a hardness tester fastener (16). Symmetrical adjusting screws (17) are provided on both sides of the mounting part. The two symmetrical adjusting screws (17) pass through the two side walls of the hardness tester mounting slot and are threadedly connected to the mounting part to adjust the lateral position of the hardness tester (12).

9. The impeller hardness testing device according to claim 1, characterized in that, An electrical box (3) is installed inside the bracket, and a button (4) is provided on the top of the bracket. The electrical box (3) is electrically connected to the cylinder (2) and the button (4) respectively. The button (4) is used to turn the cylinder (2) on or off.

10. The impeller hardness testing device according to claim 1, characterized in that, The middle part of the hardness tester handle (15) is rotatably mounted on the hardness tester bracket (11). The bottom of one end of the hardness tester handle (15) is connected to the piston rod of the cylinder (2), and the bottom of the other end of the hardness tester handle (15) is connected to the top of the hardness tester (12). The piston rod of the cylinder (2) drives the hardness probe (121) to descend by lifting.

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