Clamping device for balance detection of movable impeller of dust collector

Abstract

The utility model relates to the field of dynamic balance detection, and particularly discloses a clamping device for balance detection of a movable impeller of a dust collector, which is connected with an impeller to be detected and comprises a mounting fixture arranged above the impeller to be detected, a connecting rod is mounted at one end, close to the impeller to be detected, of the mounting fixture, and positioning threads are mounted on the outer side of the connecting rod. A pressing plate is installed on the outer side of the connecting rod, a storage groove is formed in the inner side of the lower end of the connecting rod, a clamping rod is arranged in the storage groove, an elastic rotating shaft is connected between the clamping rod and the connecting rod, an extension rod is arranged in the clamping rod, and a spring is connected between the extension rod and the clamping rod. The distance between the whole pressing plate and the clamping rod can be adjusted above the position adjusting threads, the impellers with different thicknesses can be fixedly clamped, meanwhile, the distance between the extension rod and the clamping rod can be adjusted through the limiting bolt, and therefore the device can be suitable for limiting and fixing the inner sides of the impellers with different diameters, and dynamic balance testing can be conveniently carried out.

Description

Technical Field

[0001] The utility model relates to the field of dynamic balance detection, in particular to a clamping device for balance detection of a vacuum cleaner impeller. Background Art

[0002] The impeller refers to the wheel disk with moving blades, which is a component of the impulse turbine rotor. It can also refer to the general term for the wheel disk and the rotating blades installed on it. The impeller can be classified according to the shape and opening and closing conditions. The blade shapes of the centrifugal fan impeller include single-plate type, arc type and airfoil type. The airfoil type blades have good aerodynamic characteristics, high efficiency, good strength and high rigidity. The disadvantage is that the manufacturing process is complicated, and when conveying gases with high dust concentration, the blades are easy to wear. After the blades are worn through, impurities enter the inside of the blades, causing the moving impeller to lose balance and vibrate. Therefore, the impeller is a consumable and needs to be replaced frequently. After replacement, the moving impeller needs to be dynamically balanced. Dynamic balancing can eliminate the dynamic imbalance couple and the static imbalance centrifugal force. Therefore, it is convenient to find the balance of various cylindrical rotors.

[0003] However, since the impellers of vacuum cleaners are of different sizes, a fixture is required to fix the impellers during dynamic balancing, and therefore the size of the fixture also needs to be set to a large number of specifications. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a clamping device for balancing detection of a vacuum cleaner impeller, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a clamping device for balancing detection of a vacuum cleaner impeller, connected to the impeller to be measured, including a mounting fixture arranged above the impeller to be measured, the mounting fixture is located at one end close to the impeller to be measured and is equipped with a connecting rod, the outer side of the connecting rod is equipped with an adjusting thread, the outer side of the connecting rod is equipped with a pressure plate, a receiving groove is provided on the inner side of the lower end of the connecting rod, a clamping rod is provided inside the receiving groove, an elastic rotating shaft is connected between the clamping rod and the connecting rod, an extension rod is provided inside the clamping rod, and the extension rod and the clamping rod are connected with a spring.

[0006] As a further solution of the present invention: a positioning slot is provided on the upper surface of the clamping rod, and a limiting bolt is installed inside the positioning slot at the upper end of the extension rod.

[0007] As a further solution of the present invention: the impeller to be tested includes: an upper cover plate, blades, and a lower cover plate, and a through boss is opened on the upper surface of the upper cover plate at a position corresponding to the pressure plate.

[0008] As a further solution of the present invention: the clamping rod is rotatably connected to the connecting rod via the elastic rotating shaft, and the extension rod is fixedly connected to the clamping rod via the spring.

[0009] As a further solution of the present invention: the limiting bolt is engaged and rotatably connected with the extension rod, and the limiting bolt is slidably connected with the positioning sliding groove.

[0010] As a further solution of the present invention: a threaded connecting hole is provided inside the installation fixture at one end away from the connecting rod.

[0011] As a further solution of the present invention, the pressing plate is engaged and rotatably connected with the adjusting thread.

[0012] As a further solution of the present invention: the outer diameter of the through boss is smaller than the inner diameter of the pressure plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] By applying torque to the limit bolt on the extension rod, the tightness of the extension rod inside the clamping rod is controlled. Under the action of the spring, the extension rod is ejected from the inside to the outside, which can control the limit of the inner wall of the impeller with different bosses. With the action of the pressure plate, the impeller to be tested is fixed, which is convenient for dynamic balance testing.

[0015] The pressure plate as a whole can be adjusted to the distance from the clamping rod above the adjusting thread, so as to achieve fixed clamping of impellers of different thicknesses. At the same time, the extension rod can be adjusted to the distance from the clamping rod through the limiting bolt, so that it can be used for limiting the inner side of impellers of different diameters.

[0016] The control pressure plate as a whole is engaged and rotated on the adjusting thread outside the connecting rod, and the pressure plate as a whole is pressed onto the upper surface of the upper cover plate. The upper and lower surfaces of the upper cover plate are limited by the pressure plate, the clamping rod and the extension rod as a whole to ensure the overall fixation of the impeller to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a clamping device for balancing the impeller of a vacuum cleaner;

[0018] Figure 2 This is a structural diagram of a fixture in a clamping device for balancing the impeller of a vacuum cleaner;

[0019] Figure 3 This is a schematic diagram of the structure of a clamping rod in a clamping device for balancing the impeller of a vacuum cleaner;

[0020] Figure 4This is a formal diagram of the entire device of a clamping device for balancing the impeller of a vacuum cleaner;

[0021] Figure 5 The present invention is a cross-sectional view of the entire device of a clamping device for detecting the balance of a vacuum cleaner impeller.

[0022] In the figure: 1. Mounting fixture; 2. Connecting rod; 3. Pressure plate; 4. Impeller to be tested; 5. Upper cover plate; 6. Blades; 7. Lower cover plate; 201. Receiving groove; 202. Connecting rod; 203. Extension rod; 204. Adjustment slide groove; 205. Limiting bolt; 206. Spring; 207. Elastic shaft; 208. Adjustment thread. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-5 As shown, this embodiment provides a clamping device for balancing detection of a vacuum cleaner impeller, which is connected to the impeller 4 to be measured, including a mounting fixture 1 arranged above the impeller 4 to be measured, and a threaded connecting hole is opened inside the mounting fixture 1 at the end away from the connecting rod 2, and a connecting rod 2 is installed on the end of the mounting fixture 1 close to the impeller 4 to be measured, and an adjusting thread 208 is installed on the outer side of the connecting rod 2, and a pressure plate 3 is installed on the outer side of the connecting rod 2, which is engaged and rotatably connected with the adjusting thread 208, and a receiving groove 201 is opened on the inner side of the lower end of the connecting rod 2, and a clamping rod 202 is arranged inside the receiving groove 201, and an elastic rotating shaft 207 is connected between the clamping rod 202 and the connecting rod 2. The clamping rod 202 is rotatably connected to the connecting rod 2 through the elastic rotating shaft 207, and an extension rod 203 is arranged inside the clamping rod 202, and a spring 206 is connected between the extension rod 203 and the clamping rod 202, and the extension rod 203 is fixedly connected to the clamping rod 202 through the spring 206.

[0025] like Figure 2-3 As shown, in this embodiment, a positioning groove 204 is provided on the upper surface of the clamping rod 202, and a limiting bolt 205 is installed inside the positioning groove 204 at the upper end of the extension rod 203. The limiting bolt 205 is slidably connected to the positioning groove 204, and the limiting bolt 205 is engaged and rotatably connected with the extension rod 203. The impeller 4 to be measured includes: an upper cover plate 5, blades 6, and a lower cover plate 7. A through boss is provided on the upper surface of the upper cover plate 5 corresponding to the position of the pressure plate 3, and the outer diameter dimension length of the through boss is smaller than the inner diameter dimension length of the pressure plate 3.

[0026] The working principle of the present invention is as follows: the molding dimensions of different impellers 4 to be tested are not consistent after molding and fixing, so the fixture 1 can be used to insert one end of the pressure plate 3 into the interior of the second through-protrusion on the upper cover plate 5. Under the action of the elastic shaft 207, the clamping rod 202 is ejected as a whole. Then, by applying a torsional force to the limiting bolt 205 on the extension rod 203, the tightness of the extension rod 203 inside the clamping rod 202 is controlled. Under the action of the spring 206, the extension rod 203 is pulled out from the inside. The part pops out to the outside, and after the clamping rod 202 and the extension rod 203 are limited on the lower surface of the upper cover plate 5 as a whole, the limiting bolt 205 is engaged and tightened, and the pressure plate 3 is controlled to rotate on the adjustment thread 208 on the outside of the connecting rod 2 as a whole, and the pressure plate 3 is pressed onto the upper surface of the upper cover plate 5 as a whole. Under the limiting action of the pressure plate 3, the clamping rod 202 and the extension rod 203 on the upper and lower surfaces of the upper cover plate 5 as a whole, the impeller 4 to be tested is guaranteed to be fixed as a whole, and the installation fixture 1 can be used to complete the detection process by using the overall external dynamic balancing setting.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping device for detecting the balance of a vacuum cleaner impeller, connected to an impeller to be tested (4), characterized in that: The invention comprises a mounting fixture (1) arranged above the impeller to be measured (4), wherein a connecting rod (2) is installed at one end of the mounting fixture (1) close to the impeller to be measured (4), an adjusting thread (208) is installed on the outer side of the connecting rod (2), a pressure plate (3) is installed on the outer side of the connecting rod (2), a receiving groove (201) is provided on the inner side of the lower end of the connecting rod (2), a clamping rod (202) is provided inside the receiving groove (201), an elastic rotating shaft (207) is connected between the clamping rod (202) and the connecting rod (2), an extension rod (203) is provided inside the clamping rod (202), and a spring (206) is connected between the extension rod (203) and the clamping rod (202).

2. A clamping device for balancing detection of a vacuum cleaner impeller according to claim 1, characterized in that: A position adjustment slot (204) is provided on the upper surface of the clamping rod (202), and a limiting bolt (205) is installed inside the position adjustment slot (204) at the upper end of the extension rod (203).

3. The clamping device for balancing detection of a vacuum cleaner impeller according to claim 1, characterized in that: The impeller to be tested (4) comprises an upper cover plate (5), blades (6), and a lower cover plate (7); a through boss is provided on the upper surface of the upper cover plate (5) at a position corresponding to the pressure plate (3).

4. The clamping device for balancing the impeller of a vacuum cleaner according to claim 1, characterized in that: The clamping rod (202) is rotationally connected to the connecting rod (2) via the elastic rotating shaft (207), and the extension rod (203) is fixedly connected to the clamping rod (202) via the spring (206).

5. The clamping device for balancing detection of a vacuum cleaner impeller according to claim 2, characterized in that: The limiting bolt (205) is engaged and rotationally connected with the extension rod (203), and the limiting bolt (205) is slidably connected with the position adjustment slot (204).

6. The clamping device for balancing detection of a vacuum cleaner impeller according to claim 1, characterized in that: A threaded connection hole is provided inside the installation fixture (1) at one end away from the connecting rod (2).

7. The clamping device for balancing detection of a vacuum cleaner impeller according to claim 1, characterized in that: The pressing plate (3) is engaged and rotatably connected with the adjusting thread (208).

8. The clamping device for balancing detection of a vacuum cleaner impeller according to claim 3, characterized in that: The outer diameter length of the through boss is smaller than the inner diameter length of the pressing plate (3).

Images