Dynamic balance test tool for impeller of suspension type centrifugal blower

Abstract

The utility model belongs to the technical field of impeller detection equipment, and particularly relates to a suspension centrifugal blower impeller dynamic balance test tool, which comprises a base, support frames, a balance shaft, an impeller and rollers, a slide rail is arranged on the base, the support frames are symmetrically arranged on two sides of the base in the length direction, and the support frames are slidably connected onto the slide rail. The idler wheels are symmetrically arranged on the supporting frame in the length direction of the supporting frame and connected with the idler wheel adjusting seat, the idler wheel adjusting seat is provided with a second shifting rod and slidably connected to the supporting frame, the balance shaft is connected to the idler wheels, the impeller is connected to the idler wheels through nuts, and the balance shaft is connected with the transmission wheel through a belt. The transmission wheel is rotationally connected to the cross beam, and the cross beam is slidably connected to the sliding rail; compared with the prior art, the utility model has the advantages that the assembly process is simple, the use is convenient, the detection error caused by the problem of the dynamic balancing machine is eliminated through the assistance of the gradienter, and the time cost is saved while the precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller detection equipment, in particular to a suspension centrifugal blower impeller dynamic balance test tooling. Background Art

[0002] The current market application of suspension blowers is increasing year by year. With the widespread demand for high-efficiency, low-energy consumption fan equipment in domestic and foreign industries, higher-level production standards are proposed for blower manufacturers. However, suspension blowers, like other mechanical equipment, also have some common problems. The imbalance of the fan's rotating parts is one of them, which will affect the performance and stability of the fan. When the imbalance is too large, it will cause the machine to vibrate, causing friction damage to many parts, generating noise pollution, and increasing energy consumption. In more serious cases, it will affect the safety performance of the fan equipment and increase the failure rate.

[0003] Therefore, if the impeller imbalance is too large, the impeller must be balanced to achieve the allowable balance accuracy. The working principle of the existing dynamic balancing machine is: adjust the movable bracket, place the workpiece on the dynamic balancing machine support frame, clamp and tighten after adjusting the position, tighten the motor belt, and the workpiece starts to rotate under the drive of the belt. When the workpiece reaches the set speed, the sensing system in the balancing machine will record the measured parameters on the display in real time. If the workpiece is unbalanced at the set speed, the balancing machine will vibrate, and then automatically calculate and display the imbalance on the polar coordinate axis of the equipment. The position of the imbalance point and the size of the imbalance can be obtained, so corrections can be made according to the measured results, and the mass distribution of the workpiece can be improved by increasing or decreasing the weight.

[0004] Although the dynamic balancing machine can balance the workpiece well, during the balancing process, the height difference between the bearing support points on the left and right ends of the dynamic balancing machine may cause the rotor to vibrate or friction between the workpiece contact surface and the support, damaging the workpiece. It may also cause errors in the detected data, thereby affecting the detection of the imbalance of the workpiece. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model develops a suspended centrifugal blower impeller dynamic balancing test fixture, which has a simple assembly process and is easy to use. With the assistance of a spirit level, the detection error caused by the problem of the dynamic balancing machine itself is eliminated, thereby saving time and cost while ensuring accuracy.

[0006] The technical solution to the technical problem solved by the utility model is: a suspended centrifugal blower impeller dynamic balancing test fixture, comprising a base, a support frame, a balancing shaft, an impeller and a roller, the base is provided with a slide rail, the support frame is symmetrically arranged on both sides of the length direction of the base, the support frame is slidably connected to the slide rail, the roller is symmetrically arranged on the support frame along the length direction of the support frame, the roller is connected to a roller adjustment seat, a second lever is arranged on the roller adjustment seat, the roller adjustment seat is slidably connected to the support frame, the balancing shaft is connected to the roller, the impeller is connected to the roller through a nut, the balancing shaft is connected to a transmission wheel through a belt, the transmission wheel is rotatably connected to a crossbeam, and the crossbeam is slidably connected to the slide rail.

[0007] Preferably, a support is connected to the support frame on the side away from the impeller, and a spirit level is provided on the support.

[0008] Preferably, a level adjustment seat is provided on the support, a first lever is provided on the level adjustment seat, and the level is connected to the level adjustment seat.

[0009] Preferably, the level is connected to the level adjustment base via a telescopic rod.

[0010] Preferably, a speed sensor is provided on the motor.

[0011] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0012] 1. By setting a level to assist in leveling, the detection error caused by the dynamic balancing machine itself is eliminated, and the test accuracy is improved;

[0013] 2. By connecting the roller to the roller adjustment seat, the height of the balancing shaft can be adjusted by adjusting the distance between the rollers, and the roller adjustment seat is provided with a second lever that can adjust the roller up and down, so that the balancing shaft can be adjusted from more angles to be level;

[0014] 3. By setting the level adjustment seat, the position of the level can be adjusted forward and backward, left and right during use, so as to facilitate use. At the same time, by setting the telescopic rod, the height of the level can be conveniently adjusted, making the leveling work of the balance shaft simpler and saving time.

[0015] 4. The support frame is slidably connected to the slide rail, and the spacing can be adjusted according to the balance shafts of different sizes, which improves the applicability of the equipment to various test conditions;

[0016] 5. By setting the speed sensor, the rotation speed can be easily read, making it easier to understand the test status. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 for Figure 1 Sectional view in the AA direction;

[0019] Figure 3 It is the overall structural diagram of the utility model;

[0020] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0021] Figure 5 for Figure 3 A partial enlarged view of the middle B area;

[0022] Figure 6 It is the right view of the utility model.

[0023] Among them: 1. base; 101. slide rail; 2. spirit level; 21. telescopic rod; 22. spirit level adjustment seat; 221. first lever; 23. support; 3. support frame; 4. label; 5. balance shaft; 6. belt; 61. transmission wheel; 62. crossbeam; 7. impeller; 8. nut; 9. roller; 91. roller adjustment seat; 911. second lever. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0025] Example 1

[0026] See also Figures 1 to 6 , a dynamic balancing test tool for an impeller 7 of a suspended centrifugal blower, comprising a base 1, a support frame 3, a balancing shaft 5, an impeller 7 and a roller 9, wherein the base 1 is provided with a slide rail 101, the support frame 3 is symmetrically arranged on both sides of the length direction of the base 1, the support frame 3 is slidably connected to the slide rail 101, the roller 9 is symmetrically arranged on the support frame 3 along the length direction of the support frame 3, the roller 9 is connected to a roller adjustment seat 91, a second lever 911 is arranged on the roller adjustment seat 91, the position of the roller can be adjusted up and down by adjusting the position of the second lever 911, the roller adjustment seat 91 is slidably connected to the support frame 3, and the horizontal position of the roller 9 can be adjusted by sliding the roller adjustment seat 91, the balancing shaft 5 is connected to the roller 9, the impeller 7 is connected to the roller 9 through a nut 8, the balancing shaft 5 is connected to the transmission wheel 61 through a belt 6, the transmission wheel 61 is rotatably connected to the crossbeam 62, and the crossbeam 62 is slidably connected to the slide rail 101.

[0027] like Figure 1, Figure 3 and Figure 5 As shown, a support 23 is connected to the support frame 3 on the side away from the impeller 7, and a level 2 is arranged on the support 23.

[0028] like Figure 5 As shown, a level adjustment seat 22 is provided on the support 23, a first lever 221 is provided on the level adjustment seat 22, the level 2 is connected to the level adjustment seat 22, and the level 2 is connected to the level adjustment seat 22 via a telescopic rod 21. The position of the level can be adjusted by adjusting the first lever 221.

[0029] like Figure 5 As shown, a speed sensor 4 is provided on the side of the balancing shaft 5 close to the level meter 2 .

[0030] Principle and operation process

[0031] The utility model is used in conjunction with a dynamic balancing machine. Before the dynamic balancing machine works, the balancing shaft 5 is first placed on the support frame 3, and the position is adjusted and then clamped and tightened. The belt 6 is put on the driving wheel 61 to tighten the belt 6. A label 4 is attached to the shoulder position of the balancing shaft 5 to read the rotation speed. Then, the distance between the front and rear end deweighting surfaces and the support point and the distance between the front and rear end deweighting surfaces are measured respectively, and the parameters are input into the dynamic balancing machine. The setting of the parameters should be determined according to the specifications of the balancing shaft 5; then, the rotation speed used for dynamic balancing is adjusted according to the specifications of the balancing shaft 5, and the unbalance amount is calculated according to the formula: m=9549MG / r×n

[0032] Where: M—rotor mass unit (kg)

[0033] G—Accuracy level selection

[0034] r—Correction radius unit (mm)

[0035] n—Unit of the workpiece's operating speed (rpm)

[0036] m—Unit of unbalanced qualified quantity (g)

[0037] The stability of the balancing shaft 5 is calculated. In this process, in order to avoid the measurement error caused by the height difference between the two end support frames 3, the rotation center of the two end support positions is specially kept consistent with the balancing shaft 5 to be measured, that is, to ensure that the central main inertia axis is horizontal, and a preliminary test is performed using a level meter 2. The level meter 2 is set to be adjustable back and forth and to be telescopic up and down. During the test, the position and height of the level meter 2 can be adjusted to detect whether the balancing shaft 5 is horizontal, and the position with the height difference is detected and corrected in real time. The correction operation is performed by adjusting the position of the roller adjustment seat 91 and the second lever 911 Adjust the height of the roller 9; after the inspection is correct and the balancing shaft 5 is stable, install the impeller 7 on the front end of the shaft and tighten it securely with the nut 8, use the hydraulic tensioner to tighten the nut 8 2-3 times according to the specified preload force, after the impeller 7 is assembled, balance and calibrate again, so that the measured imbalance can be more accurate and effective, then measure the distance from the large end face of the front impeller 7 to the supporting point, and input the parameters into the dynamic balancing machine, measure multiple times until the value is stable, grind and remove weight on the balancing deweighting surface of the impeller 7, and then perform the dynamic balancing test again until the allowable balance grade standard is reached.

[0038] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A suspension centrifugal blower impeller dynamic balance test tool, characterized by: The invention comprises a base (1), a support frame (3), a balancing shaft (5), an impeller (7) and a roller (9), wherein the base (1) is provided with a slide rail (101), the support frame (3) is symmetrically arranged on both sides of the base (1) in the length direction, the support frame (3) is slidably connected to the slide rail (101), the roller (9) is symmetrically arranged on the support frame (3) in the length direction of the support frame (3), the roller (9) is connected to a roller adjustment seat (91), and the roller (9) is (9) A second lever (911) is provided on the adjustment seat, the roller adjustment seat (91) is slidably connected to the support frame (3), the balancing shaft (5) is connected to the roller (9), the impeller (7) is connected to the roller (9) via a nut (8), the balancing shaft (5) is connected to the transmission wheel (61) via a belt (6), the transmission wheel (61) is rotatably connected to the crossbeam (62), and the crossbeam (62) is slidably connected to the slide rail (101).

2. The dynamic balance test fixture for a suspended centrifugal blower impeller according to claim 1, characterized in that: A support (23) is connected to a side of the support frame (3) away from the impeller (7), and a level (2) is provided on the support (23).

3. The suspension centrifugal blower impeller dynamic balance test fixture according to claim 2, characterized in that: A level adjustment seat (22) is provided on the support (23), a first lever (221) is provided on the level adjustment seat (22), and the level (2) is connected to the level adjustment seat (22).

4. The dynamic balance test fixture for a suspended centrifugal blower impeller according to claim 3, characterized in that: The level (2) is connected to the level adjustment seat (22) via a telescopic rod (21).

5. The suspension centrifugal blower impeller dynamic balance test fixture according to claim 1, characterized in that: A speed sensor (4) is provided on a side of the balancing shaft (5) close to the level gauge (2).

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