Balancing sheet firmness detection device

Abstract

The utility model discloses a balancing sheet firmness detection device, which relates to the transmission shaft detection field, and comprises a shaft tube, a balancing sheet, a first detection hole, a second detection hole and a pressure head, the shaft tube is provided with the first detection hole and the second detection hole along the radial direction, the balancing sheet is welded on the surface of the shaft tube corresponding to the center of the second detection hole, and the pressure head is connected with the balancing sheet. A pressure head of the pressure detector is used for sequentially penetrating through the first detection hole and the second detection hole and abutting against the balance piece so as to detect the value of force enabling the balance piece to be separated from the shaft tube. According to the utility model, the specific numerical value of the firmness of the projection welding spot of the balance sheet can be accurately detected, whether the projection welding of the balance sheet on the shaft tube is firm can be determined, and the setting of projection welding process parameters can be adjusted according to the numerical value, so that the optimal process parameters can be matched.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft testing, specifically to a device for testing the firmness of balance plates. Background Technology

[0002] After the drive shaft undergoes dynamic balancing testing, a balance plate is usually welded on to compensate for the weight and reduce the residual imbalance to bring it within the acceptable range.

[0003] like Figure 3 , 4 As shown in Figure 5, the existing method for testing the firmness of the balance plate is as follows: The balance plate (2) is projected onto the shaft tube (1) through two projection weld points (6). After projection welding, the firmness of the projection weld points needs to be tested to confirm whether the balance plate is firmly projected onto the shaft tube. The existing testing method is to use an iron hammer (7) to strike the balance plate three times in the horizontal direction. If the balance plate does not fall off, it is considered qualified. However, this method cannot effectively control the magnitude of the striking force, relying on the inspector's feel, which has a large deviation in feel; and it cannot clearly understand the specific value of the firmness of the projection weld points, and cannot provide a basis for adjusting the setting of projection welding process parameters. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a balance plate firmness detection device that can accurately detect the specific numerical value of the firmness of the balance plate projection weld joint. It can not only confirm whether the balance plate projection weld on the shaft tube is firm, but also adjust the projection weld process parameters according to the numerical value to match the optimal process parameters.

[0005] The purpose of this utility model is achieved through the following technical solution: This balance plate firmness testing device includes a shaft tube, a balance plate, a first testing hole, a second testing hole, and a pressure head. The first testing hole and the second testing hole are radially through the shaft tube. The balance plate is welded to the surface of the shaft tube corresponding to the center of the second testing hole. The pressure head of the pressure testing machine is used to pass through the first testing hole and the second testing hole in sequence and press against the balance plate to detect the magnitude of the force that causes the balance plate to detach from the shaft tube.

[0006] As a further technical solution, the centerline of the first detection hole is collinear with the centerline of the second detection hole and perpendicular to the center of the shaft tube.

[0007] The beneficial effects of this utility model are as follows:

[0008] 1. It can accurately detect the specific numerical value of the firmness of the projection weld of the balance plate, realizing quantitative detection;

[0009] 2. This can confirm whether the balance plate is securely welded to the shaft tube;

[0010] 3. Use a press to measure the specific value of the weld joint strength, and adjust the setting of the projection welding process parameters according to the measured value to match the optimal process parameters. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure during the testing of this utility model.

[0013] Figure 3 This is a schematic diagram of the existing technology.

[0014] Figure 4 for Figure 3 A-direction view.

[0015] Figure 5 A schematic diagram of the structure used for testing with existing technology.

[0016] Explanation of reference numerals in the attached drawings: 1. Shaft tube; 2. Balance plate; 3. First inspection hole; 4. Second inspection hole; 5. Pressure head; 6. Projection weld joint; 7. Iron hammer. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings:

[0018] Example: As attached Figure 1 , 2 As shown, this balance plate firmness testing device includes a shaft tube 1, a balance plate 2, a first testing hole 3, a second testing hole 4, and a pressure head 5.

[0019] Reference Appendix Figure 1 A first inspection hole 3 and a second inspection hole 4 are radially drilled through the shaft tube 1. The centerline of the first inspection hole 3 is collinear with the centerline of the second inspection hole 4, and this centerline is perpendicular to the center of the shaft tube 1, ensuring the coaxiality of the two inspection holes. Furthermore, a balance plate 2 is welded to the surface of the shaft tube 1 corresponding to the center of the second inspection hole 4, ensuring balanced force when the pressure head 5 presses against the balance plate 2. During testing, the pressure testing machine is started, and the pressure head 5 of the pressure testing machine is gradually lowered, then passes through the first inspection hole 3 and the second inspection hole 4 in sequence, pressing against the balance plate 2. As the pressure of the pressure head 5 increases, the balance plate 2 detaches from the shaft tube 1. At this time, the pressure testing machine displays the force value of the balance plate 2 detaching from the shaft tube 1 (i.e., the strength value of the projection weld of the balance plate).

[0020] The working process of this utility model is as follows: Drill two circular holes (first detection hole 3 and second detection hole 4) along the center of the shaft tube 1, ensuring that the center line of the first detection hole 3 and the center line of the second detection hole 4 are collinear and perpendicular to the center of the shaft tube 1, guaranteeing the coaxiality of the two detection holes. Then, place the balance plate 2 directly opposite the center of the lower circular hole (second detection hole 4) and centrally project it onto the center of the lower circular hole of the shaft tube 1. Next, pass the pressure head 5 of the pressure testing machine through the first detection hole 3 and the second detection hole 4 in sequence, and press it against the balance plate 2. Finally, start the pressure testing machine until the balance plate 2 detaches. At this time, the pressure testing machine displays the force required for the balance plate 2 to detach from the shaft tube 1. This allows for quantitative testing of the strength of the projection weld joint of the balance plate. Subsequently, the projection welding process parameters can be adjusted based on the detected values ​​to match the optimal process parameters.

[0021] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A device for detecting the firmness of a balance weight, characterized in that: The device includes a shaft tube (1), a balance plate (2), a first detection hole (3), a second detection hole (4), and a pressure head (5). The first detection hole (3) and the second detection hole (4) are radially through the shaft tube (1). The balance plate (2) is welded to the surface of the shaft tube (1) corresponding to the center of the second detection hole (4). The pressure head (5) of the pressure testing machine is used to pass through the first detection hole (3) and the second detection hole (4) in sequence and press against the balance plate (2) to detect the magnitude of the force that causes the balance plate (2) to detach from the shaft tube (1).

2. The balance plate firmness testing device according to claim 1, characterized in that: The centerline of the first detection hole (3) is collinear with the centerline of the second detection hole (4) and perpendicular to the center of the shaft tube (1).

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