Simple dynamic balance testing device

Abstract

The utility model discloses a simple dynamic balance testing device. The simple dynamic balance testing device is characterized in that two stand columns are fixed on a machine base; each stand column is provided with an installation frame, two bearings are horizontally and rotatably supported on each installation frame, the end walls of the two bearings on the same installation frame are aligned, the installation shaft is horizontally arranged, the outer side wall of the installation shaft abuts against the outer side walls of the four bearings at the same time in a rolling mode, and the dynamic balance test piece is detachably fixed to the installation shaft. The dynamic balance test piece can be positioned between the two mounting racks; the connecting piece provided with the laser is vertically installed on the stand column in a sliding mode, the light-emitting direction of the light-emitting end of the laser is horizontally arranged, and laser emitted by the light-emitting end of the laser can irradiate the dynamic balance test piece. The test device is simple in structure, the dynamic balance test and adjustment of the dynamic balance test piece are relatively simple, the result of the dynamic balance test is relatively accurate, and the dynamic balance test piece can be simply tested and adjusted by using the device.

Description

Technical Field

[0001] The utility model relates to the field of dynamic balance testing equipment, and more specifically to a simple dynamic balance testing device. Background Art

[0002] Wind wheels, water pump impellers, etc. can be called rotating bodies. When these rotating bodies rotate under ideal conditions, the pressure on the bearings should be uniform, that is, they should reach a balanced state. However, due to various factors such as uneven materials, blank defects, processing and assembly errors, the centrifugal inertia forces generated by each tiny particle on the actual rotating body cannot offset each other when it rotates. This unbalanced centrifugal inertia force will act on the machine and its foundation through the bearing, causing vibration, noise, and accelerated bearing wear. In severe cases, it may cause mechanical failure or destructive accidents.

[0003] In order to solve the above problems and improve the operating stability and service life of mechanical equipment, it is necessary to carry out dynamic balancing tests on the above-mentioned rotating parts to determine the size and position of their imbalance and make corrections accordingly so that the rotating parts can reach the allowable balancing accuracy level or reduce the amplitude of the resulting mechanical vibration to within the allowable range.

[0004] The existing dynamic balancing test equipment has high testing accuracy and efficiency, but its structure is complex, cannot be flexibly arranged, and the equipment cost is high. It is not suitable for some occasions, such as components that do not require high dynamic balancing but are large in size and require frequent maintenance. Such components require simple dynamic balancing tests and adjustments after maintenance. The current dynamic balancing test equipment obviously cannot meet the testing and adjustment needs of the above components.

[0005] Therefore, how to provide a simple dynamic balancing test device that can overcome the above problems is an issue that technical personnel in this field urgently need to solve. Utility Model Content

[0006] In view of this, the utility model provides a simple dynamic balancing test device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A simple dynamic balance test device, comprising:

[0009] Machine base;

[0010] A column, two of which are provided and both are vertically fixed on the base;

[0011] A rolling support member, the rolling support member comprises a mounting frame, a bearing and a mounting shaft, two mounting frames are provided and each is mounted on two columns, two bearings are rotatably supported on each mounting frame, the axis of the bearings are arranged horizontally, the two end walls of one bearing are respectively aligned with the two end walls of another bearing located on the same mounting frame, the mounting shaft is arranged horizontally and its outer side wall is simultaneously in rolling contact with the outer side walls of four bearings, a dynamic balancing test piece is detachably fixed on the mounting shaft, and the dynamic balancing test piece can be located between the two mounting frames;

[0012] The positioning member includes a connecting member and a laser. The connecting member is vertically slidably installed on the column. The laser is fixed on the connecting member. The light emitting direction of the light emitting end of the laser is arranged horizontally. The laser emitted by the light emitting end of the laser can be irradiated on the dynamic balancing test piece.

[0013] Through the above technical scheme, it can be known that compared with the prior art, the utility model discloses a simple dynamic balancing test device. The utility model designs two mounting frames, each of which is rotatably supported with two bearings. The mounting shaft equipped with the dynamic balancing test piece can be arranged on four bearings, and the outer wall of the mounting shaft is simultaneously rolled and pressed against the outer walls of the four bearings. After the dynamic balancing test piece with a certain speed stops rotating naturally, the laser installed on the column will irradiate a light spot on the dynamic balancing test piece. The staff can remove or add material to the dynamic balancing test piece according to the light spot, and repeatedly rotate the dynamic balancing test piece several times until the light spot does not coincide with the previously made mark after the dynamic balancing test piece stops rotating. At this time, the dynamic balancing test piece can complete the dynamic balancing test and adjustment; the test device has a simple structure, and the dynamic balancing test and adjustment of the dynamic balancing test piece are also relatively simple. The result of the dynamic balancing test is also relatively accurate. The device can be used to perform simple tests and adjustments on the dynamic balancing test piece.

[0014] Preferably, the mounting frame includes a fixed frame and a movable frame, the fixed frame is fixed to the upper end of the column, the fixed frame is rotatably supported with a bearing, the fixed frame is horizontally slidably connected with the movable frame, the sliding direction of the movable frame relative to the fixed frame is perpendicular to the axis of the bearing, and the movable frame is rotatably supported with a bearing. The axis center distance of two bearings on the same mounting frame can be adjusted.

[0015] Preferably, the fixing frame has a horizontal mounting surface, the bearing is arranged above the horizontal mounting surface, and a mounting groove is provided on the horizontal mounting surface, the groove length direction of the mounting groove is perpendicular to the axial center line of the bearing, and the two long groove walls of the mounting groove each have a sliding groove, the groove length direction of the sliding groove is the same as the groove length direction of the mounting groove; the lower end of the movable frame is slidably embedded in the mounting groove, and two limit plates are horizontally integrally formed on the movable frame, and the two limit plates are slidably embedded in the two slide grooves respectively; the movable frame is provided with a threaded through hole, and a horizontally arranged adjusting screw is screwed in the threaded through hole, one end of the adjusting screw is coaxially integrally formed with a connecting column, and the other end of the adjusting screw is coaxially integrally formed with an adjusting wheel, and the connecting column is coaxially integrally formed with a circular baffle at one end away from the adjusting screw, and a limiting hole is provided on the fixing frame, the connecting column is coaxially inserted in the limiting hole, and an end wall of the adjusting screw provided with the connecting column and an end wall of the circular baffle close to the connecting column can both abut against the fixing frame. The movable frame can move stably in the installation slot.

[0016] Preferably, a scale line is provided on the horizontal mounting surface and along the length direction of the mounting groove, and a triangular indicating protrusion is provided on the movable frame, and the sharp end of the indicating protrusion can be aligned with the scale line. This design can accurately know the moving distance and position of the movable frame in the mounting groove.

[0017] Preferably, a long hole is formed on one of the columns, and the long hole is arranged vertically; the connecting piece includes an external threaded tube and a nut, and a retaining ring is coaxially formed on one end of the side wall of the external threaded tube, and the nut is screwed on the external threaded tube, and the external threaded tube is inserted into the long hole. The retaining ring and the nut can clamp the column, and the laser is embedded inside the external threaded tube. The height of the laser is adjustable to ensure that the laser emitted by the laser can irradiate the dynamic balance test piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 It is an overall axonometric diagram of a simple dynamic balancing test device;

[0020] Figure 2 This is a front view of a simple dynamic balancing test device;

[0021] Figure 3 It is a partial explosion diagram of a simple dynamic balance test device;

[0022] Figure 4 It is a partial axonometric diagram of a simple dynamic balancing test device.

[0023] In the figure:

[0024] 01 is the base, 02 is the column, 020 is the long hole, 03 is the fixing frame, 030 is the mounting groove, 031 is the slide groove, 032 is the limit hole, 033 is the scale line, 04 is the movable frame, 040 is the limit plate, 041 is the threaded through hole, 042 is the indicating protrusion, 05 is the bearing, 06 is the mounting shaft, 07 is the external threaded tube, 070 is the retaining ring, 08 is the nut, 09 is the laser, 10 is the adjusting screw, 100 is the connecting column, 101 is the adjusting wheel, and 102 is the circular baffle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The utility model discloses a simple dynamic balancing test device. The utility model designs two mounting frames, each of which is rotatably supported with two bearings 05. A mounting shaft 06 equipped with a dynamic balancing test piece can be arranged on the four bearings 05. The outer side wall of the mounting shaft 06 is simultaneously rolled and pressed against the outer side walls of the four bearings 05. After the dynamic balancing test piece with a certain speed stops rotating naturally, a laser 09 installed on a column 02 will irradiate a light spot on the dynamic balancing test piece. The staff can remove or add material to the dynamic balancing test piece according to the light spot, and repeatedly rotate the dynamic balancing test piece several times until the light spot does not overlap with the mark made previously after the dynamic balancing test piece stops rotating. At this time, the dynamic balancing test piece can complete the dynamic balancing test and adjustment. The test device has a simple structure, and the dynamic balancing test and adjustment of the dynamic balancing test piece are also relatively simple. The result of the dynamic balancing test is also relatively accurate. The device can be used to perform simple testing and adjustment on the dynamic balancing test piece.

[0027] By designing the fixed frame 03 and the movable frame 04, the axial center distance of the two bearings 05 on the same mounting frame can be adjusted, ensuring that the mounting shafts 06 with different outer diameters can reliably roll against the outer side walls of the two bearings 05 at the same time;

[0028] By designing the long strip hole 020, the height of the laser 09 can be adjusted, ensuring that the laser light emitted by the laser 09 can be irradiated on the dynamic balancing test piece.

[0029] Example

[0030] See attached Figure 1-4 It is a schematic diagram of the overall and partial structures of an embodiment of the utility model. The utility model specifically discloses a simple dynamic balancing test device. A mounting hole is provided on the dynamic balancing test piece. The dynamic balancing test piece in this application is mainly an impeller;

[0031] The dynamic balancing test device comprises:

[0032] Machine base 01, machine base 01 is arranged horizontally on the ground;

[0033] Column 02, two columns 02 are provided and both are vertically fixed on the machine base 01. The outer contour radius of the dynamic balancing test piece should be smaller than the shortest distance from the upper end of the column 02 to the machine base 01. The purpose of this design is to avoid collision and interference between the dynamic balancing test piece and the machine base 01;

[0034] The rolling support member includes a mounting frame, a bearing 05 and a mounting shaft 06. Two mounting frames are provided and each is mounted on two columns 02. Two bearings 05 are rotatably supported on each mounting frame. The axis of the bearing 05 is arranged horizontally. The two end walls of one bearing 05 are aligned with the two end walls of another bearing 05 located on the same mounting frame. The mounting shaft 06 with a circular cross-sectional outer contour is arranged horizontally and its outer side wall is in rolling contact with the outer side walls of four bearings 05 at the same time. Before the test is performed, the mounting shaft 06 can be coaxially and tightly inserted into the mounting hole on the dynamic balancing test piece. After the mounting shaft 06 is arranged in place, the dynamic balancing test piece is located between the two mounting frames.

[0035] The positioning part includes a connecting part and a laser 09. The connecting part is vertically slidably installed on the column 02, that is, the connecting part can move up and down along the length direction of the column 02, so as to adjust the height of the laser 09. The laser 09 is fixed on the connecting part, and the light-emitting direction of the light-emitting end of the laser 09 is arranged horizontally. The laser emitted by the light-emitting end of the laser 09 can irradiate the dynamic balancing test piece.

[0036] The mounting frame includes a fixed frame 03 and a movable frame 04, the fixed frame 03 is fixed at the upper end of the column 02, a bearing 05 is rotatably supported on the fixed frame 03, and a movable frame 04 is horizontally slidably connected to the fixed frame 03, the sliding direction of the movable frame 04 relative to the fixed frame 03 is perpendicular to the axis line of the bearing 05, and a bearing 05 is rotatably supported on the movable frame 04; for dynamic balancing test pieces with different mounting holes, mounting shafts 06 with different outer diameters need to be used accordingly. Since the axial center distance of the two bearings 05 on the same mounting frame can be adjusted, this design facilitates the outer side walls of the two bearings 05 on the same mounting frame to roll against the outer side wall of the mounting shaft 06 at the same time.

[0037] The fixing frame 03 has a horizontal mounting surface, a bearing 05 is arranged above the horizontal mounting surface, a rectangular mounting groove 030 is provided on the horizontal mounting surface, the groove length direction of the mounting groove 030 is perpendicular to the axis of the bearing 05, and two long groove walls of the mounting groove 030 are respectively provided with a slide groove 031, and the groove length direction of the slide groove 031 is the same as the groove length direction of the mounting groove 030;

[0038] The lower end of the movable frame 04 is slidably embedded in the installation groove 030. Two rectangular limit plates 040 are horizontally integrally formed on the movable frame 04. The two limit plates 040 are slidably embedded in the two slide grooves 031 respectively.

[0039] A threaded through hole 041 is provided on the movable frame 04, and a horizontally arranged adjusting screw 10 is rotated in the threaded through hole 041. A connecting column 100 is coaxially integrally formed at one end of the adjusting screw 10, and an adjusting wheel 101 is coaxially integrally formed at the other end of the adjusting screw 10. A circular baffle 102 is coaxially integrally formed at one end of the connecting column 100 away from the adjusting screw 10; a limiting hole 032 is provided on the fixed frame 03, and the connecting column 100 is coaxially inserted in the limiting hole 032. The adjusting screw 10 is provided with an end wall of the connecting column 100 and an end wall of the circular baffle 102 close to the connecting column 100, both of which can abut against the fixed frame 03; the adjusting screw 10 can be rotatably connected to the fixed frame 03, and the adjusting screw 10 is rotated by using the adjusting wheel 101, and the movable frame 04 can stably move along the slot length direction of the mounting slot 030.

[0040] A scale line 033 is provided on the horizontal mounting surface and along the length direction of the mounting groove 030, and a triangular indicating protrusion 042 is provided on the movable frame 04, and the sharp end of the indicating protrusion 042 can be aligned with the scale line 033; this design facilitates accurate adjustment of the axial center distance of two bearings 05 on the same mounting frame.

[0041] A column 02 is provided with a long hole 020, which is arranged vertically in the hole length direction; the connecting piece includes an external threaded tube 07 and a nut 08, and a retaining ring 070 is coaxially integrally formed on the side wall of one end of the external threaded tube 07. The nut 08 is screwed on the external threaded tube 07, and the external threaded tube 07 is inserted into the long hole 020. The retaining ring 070 and the nut 08 can clamp the column 02, and the laser 09 is embedded on the inner side of the external threaded tube 07; by designing the long hole 020, the connecting piece can move along the hole length direction of the long hole 020, thereby realizing the height adjustment of the laser 09, ensuring that the laser emitted by the laser 09 can irradiate the dynamic balancing test pieces with different outer diameters.

[0042] After the outer wall of the mounting shaft 06 equipped with the dynamic balancing test piece is rolled against the outer walls of the four bearings 05 at the same time, the laser 09 is turned on, and then the dynamic balancing test piece is manually moved to rotate together with the mounting shaft 06. When the dynamic balancing test piece reaches a certain speed, the staff will stop moving the dynamic balancing test piece. After the dynamic balancing test piece stops rotating, the laser emitted by the laser 09 will irradiate the dynamic balancing test piece and form a light spot on the dynamic balancing test piece. The staff will mark the light spot with a marker. If the dynamic balancing test piece is eccentric, then in the process of repeating the above operation, the position of the light spot on the dynamic balancing test piece is almost constant;

[0043] The staff can remove or add material to the dynamic balancing test piece according to the position of the light spot on the dynamic balancing test piece. Removing material means removing a part of the material of the dynamic balancing test piece with a tool at the position of the light spot; adding material means adding and fixing a part of material at a position symmetrical to the light spot with the installation axis 06 as the center; after removing or adding material to the dynamic balancing test piece, the staff continues to manually rotate the dynamic balancing test piece and repeats the above process several times until the light spot does not overlap with the previously made mark.

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A simple dynamic balance test device, characterized in that: include: Base (01); A column (02), wherein two columns (02) are provided and both are vertically fixed on the machine base (01); A rolling support member, the rolling support member comprising a mounting frame, a bearing (05) and a mounting shaft (06), two mounting frames are provided and each is mounted on two of the columns (02), two bearings (05) are rotatably supported on each of the mounting frames, the axis of the bearings (05) are arranged horizontally, the two end walls of one bearing (05) are respectively aligned with the two end walls of another bearing (05) located on the same mounting frame, the mounting shaft (06) is arranged horizontally and its outer side wall is simultaneously in rolling contact with the outer side walls of four bearings (05), a dynamic balancing test piece is detachably fixed on the mounting shaft (06), and the dynamic balancing test piece can be located between the two mounting frames; A positioning member, the positioning member comprises a connecting member and a laser (09), the connecting member is vertically slidably mounted on the column (02), the laser (09) is fixed on the connecting member, the light emitting direction of the light emitting end of the laser (09) is arranged horizontally, and the laser light emitted by the light emitting end of the laser (09) can be irradiated on the dynamic balancing test piece.

2. A simple dynamic balancing test device according to claim 1, characterized in that: The mounting frame comprises a fixed frame (03) and a movable frame (04); the fixed frame (03) is fixed to the upper end of the column (02); a bearing (05) is rotatably supported on the fixed frame (03); the movable frame (04) is horizontally slidably connected to the fixed frame (03); the sliding direction of the movable frame (04) relative to the fixed frame (03) is perpendicular to the axis of the bearing (05); and the bearing (05) is rotatably supported on the movable frame (04).

3. A simple dynamic balancing test device according to claim 2, characterized in that: The fixed frame (03) has a horizontal mounting surface, the bearing (05) is arranged above the horizontal mounting surface, a mounting groove (030) is provided on the horizontal mounting surface, the groove length direction of the mounting groove (030) is perpendicular to the axis of the bearing (05), and two long groove walls of the mounting groove (030) are respectively provided with a slide groove (031), and the groove length direction of the slide groove (031) is the same as the groove length direction of the mounting groove (030); the lower end of the movable frame (04) is slidably embedded in the mounting groove (030), and two limit plates (040) are horizontally integrally formed on the movable frame (04), and the two limit plates (040) are respectively slidably embedded in the two slide grooves (031); the movable frame (04) is provided with a threaded A through hole (041) is provided, wherein a horizontally arranged adjusting screw (10) is screwed in the threaded through hole (041), a connecting column (100) is coaxially integrally formed at one end of the adjusting screw (10), an adjusting wheel (101) is coaxially integrally formed at the other end of the adjusting screw (10), a circular baffle (102) is coaxially integrally formed at one end of the connecting column (100) away from the adjusting screw (10), a limiting hole (032) is provided on the fixing frame (03), the connecting column (100) is coaxially inserted into the limiting hole (032), the adjusting screw (10) is provided with an end wall of the connecting column (100) and an end wall of the circular baffle (102) close to the connecting column (100), both of which can abut against the fixing frame (03).

4. A simple dynamic balancing test device according to claim 3, characterized in that: A scale line (033) is provided on the horizontal installation surface and along the groove length direction of the installation groove (030), and a triangular indicating protrusion (042) is provided on the movable frame (04), and the sharp end of the indicating protrusion (042) can be aligned with the scale line (033).

5. A simple dynamic balancing test device according to claim 1, characterized in that: A long hole (020) is opened on one of the columns (02), and the length direction of the long hole (020) is arranged vertically; the connecting piece includes an externally threaded tube (07) and a nut (08), and a retaining ring (070) is coaxially integrally formed on the side wall of one end of the externally threaded tube (07), and the nut (08) is screwed on the externally threaded tube (07), and the externally threaded tube (07) is inserted into the long hole (020), and the retaining ring (070) and the nut (08) can clamp the column (02), and the laser (09) is embedded in the inner side of the externally threaded tube (07).

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