Pump shaft runout detection device

Abstract

The utility model discloses a pump shaft runout detection device which comprises a pump and a motor, and the motor drives a pump shaft of the pump to rotate through a gear transmission mechanism. The force application end of the external force application part abuts against the end face of a driven gear on the pump shaft, and the force application direction, facing the driven gear, of the external force application part is parallel to the axis of the pump shaft; and a measuring head of the lever meter is correspondingly contacted with the end face of the driven gear. According to the utility model, the jumping condition of the pump shaft under different external forces can be detected, and the pump shaft jumping detection accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pump shaft beating detection, in particular to a pump shaft beating detection device. Background Art

[0002] When the pump is running, affected by the pump's own structure and working environment, the pump shaft is prone to beat, that is, the pump shaft moves unevenly during rotation. Excessive beating will affect the normal operation of the pump, causing greater vibration and wear, and thus affecting the operating efficiency and life. The pump shaft's beating is difficult to accurately judge visually, especially when the beating amplitude is small, it is even more difficult to capture the beating state. Therefore, it is more necessary to obtain the pump shaft condition more intuitively from the beating data to understand the assembly quality and performance of the pump. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a pump shaft runout detection device, which can measure the runout of the pump shaft under different external forces and improve the accuracy of pump shaft runout detection.

[0004] Technical solution: To achieve the above purpose, the utility model provides a pump shaft runout detection device, comprising a pump and a motor, wherein the motor drives the pump shaft of the pump to rotate through a gear transmission mechanism;

[0005] An external force applying part, wherein the force applying end of the external force applying part abuts against the end face of the driven gear on the pump shaft, and the force applying direction of the external force applying part toward the driven gear is parallel to the axis of the pump shaft;

[0006] And a lever gauge, the probe of the lever gauge contacts the end face of the driven gear accordingly.

[0007] Furthermore, the gear transmission mechanism also includes a driving gear mounted on the output shaft of the motor, and the driving gear is meshed with the driven gear.

[0008] Furthermore, the force applying end of the external force applying portion is provided with a ball head, and the ball head is in rolling contact with the end surface of the driven gear.

[0009] Furthermore, a feeding mechanism corresponding to the external force applying part is included, and the feeding mechanism drives the external force applying part to feed toward the driven gear to change the external force applied to the end surface of the driven gear.

[0010] Furthermore, the external force applying part is a push-pull dynamometer, and the ball head is installed on a screw rod of the push-pull dynamometer.

[0011] Furthermore, it includes a translation mechanism corresponding to the lever gauge, and the lever gauge is displaced closer to or farther from the driven gear through the translation mechanism.

[0012] Furthermore, the feeding mechanism and the translation mechanism are both screw push-pull mechanisms.

[0013] Beneficial effects: The utility model provides rotational power to the pump shaft through the motor, and applies external force to the driven gear on the pump shaft, so as to use the values ​​on the lever meter to more intuitively detect the vibration of the pump shaft under the influence of different external forces, thereby expanding the vibration detection range, and improving the accuracy of pump shaft vibration detection, which is suitable for large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the top structure of the utility model. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, a pump shaft runout detection device comprises a pump 1 and a motor 6, wherein the motor 6 drives the pump shaft 2 of the pump 1 to rotate through a gear transmission mechanism; an external force applying part 4, wherein the force applying end of the external force applying part 4 abuts against the end face of the driven gear 3 on the pump shaft 2, and the force applying direction of the external force applying part 4 toward the driven gear 3 is parallel to the axis of the pump shaft 2; and a lever gauge 7, wherein the probe 70 of the lever gauge 7 contacts the end face of the driven gear 3. The utility model provides rotational power to the pump shaft 2 through the motor 6, and applies external force to the driven gear 3 on the pump shaft 2, thereby using the value on the lever gauge 7 to more intuitively detect the runout of the pump shaft 2 under the influence of different external forces, thereby expanding the runout detection range and improving the accuracy of pump shaft runout detection.

[0019] The utility model further comprises a platform 10, a pump 1 is mounted on the platform 10 via a pump frame 11, and a motor 6 is mounted on the platform 10 via a motor frame. The gear transmission mechanism further comprises a driving gear 5 mounted on the output shaft of the motor 6, the driving gear 5 is meshed with a driven gear 3, and the driven gear 3 is fastened to the pump shaft 2 via a nut.

[0020] like Figure 1 or Figure 3As shown, the force applying end of the external force applying part 4 is provided with a ball head 41, and the ball head 41 is in rolling contact with the end face of the driven gear 3. By installing the ball head 41 at the force applying end, it is possible to avoid large wear and tear, and at the same time reduce the vibration generated by contacting the driven gear 3, avoid interfering with the vibration detection of the pump shaft 2, and help the accuracy of the pump shaft vibration detection.

[0021] like Figure 1 As shown, the utility model includes a feeding mechanism 9 corresponding to the external force applying part 4, and the feeding mechanism 9 drives the external force applying part 4 to feed toward the driven gear 3 to change the external force applied to the end face of the driven gear 3. Since the driven gear 3 is fixed on the pump shaft 2, different external forces can be indirectly applied to the pump shaft 2.

[0022] As a preference, the external force applying part 4 is a push-pull dynamometer, the ball head 41 is installed on the screw of the push-pull dynamometer, and the value of the applied external force can be directly read through a display screen on the surface of the push-pull dynamometer.

[0023] like Figure 1 As shown, the utility model includes a translation mechanism 8 corresponding to the lever gauge 7, and the lever gauge 7 is displaced closer to or farther from the driven gear 3 through the translation mechanism 8. When the translation mechanism 8 is operated to drive the lever gauge 7 to approach the driven gear 3, the purpose is to make the probe 70 of the lever gauge 7 contact the end face of the driven gear 3, and to facilitate the adjustment of the lever gauge 7, that is, when the probe 70 contacts the end face of the driven gear 3 at the beginning, the pointer of the lever gauge 7 points to zero, and in the subsequent runout detection process, the translation mechanism 8 also supports the lever gauge 7, making the lever gauge 7 more stable and ensuring the detection accuracy; when the pump shaft runout detection is completed, the translation mechanism 8 is operated again to drive the lever gauge 7 away from the driven gear 3, leaving a larger disassembly space for the driven gear 3, so as to facilitate the removal of the driven gear 3 from the pump shaft 2.

[0024] In the present invention, the feeding mechanism 9 and the translation mechanism 8 are both screw push-pull mechanisms. Figure 1 As shown, the feeding mechanism 9 includes a first screw 91, a first slider 92, a guide rail 93 and a first bracket 94. The first screw 91 is mounted on the platform 10 through the first bracket 94, and the guide rail 93 is also mounted on the platform 10. The first slider 92 is slidably matched with the guide rail 93, and the screw 91 is threadedly disposed through the first slider 92. Figure 2 As shown, the translation mechanism 8 includes a second bracket 81, a second screw 82 and a second slider 83. The second screw 82 is set on the pump frame 11 through the second bracket 81. The second slider 83 slides in cooperation with the guide groove opened on the second bracket 81. The second screw 82 is threaded through the second slider 83.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pump shaft runout detection device, characterized in that: It comprises a pump (1) and a motor (6), wherein the motor (6) drives a pump shaft (2) of the pump (1) to rotate via a gear transmission mechanism; An external force applying part (4), wherein the force applying end of the external force applying part (4) abuts against the end surface of the driven gear (3) on the pump shaft (2), and the force applying direction of the external force applying part (4) toward the driven gear (3) is parallel to the axis of the pump shaft (2); And a lever gauge (7), wherein a probe (70) of the lever gauge (7) contacts the end surface of the driven gear (3) accordingly.

2. A pump shaft runout detection device according to claim 1, characterized in that: The gear transmission mechanism further comprises a driving gear (5) mounted on the output shaft of the motor (6), and the driving gear (5) is meshed with the driven gear (3).

3. A pump shaft runout detection device according to claim 1, characterized in that: The force applying end of the external force applying part (4) is provided with a ball head (41), and the ball head (41) is in rolling contact with the end surface of the driven gear (3).

4. A pump shaft runout detection device according to claim 3, characterized in that: It comprises a feeding mechanism (9) corresponding to the external force applying part (4), wherein the feeding mechanism (9) drives the external force applying part (4) to feed toward the driven gear (3) so as to change the external force applied to the end surface of the driven gear (3).

5. A pump shaft runout detection device according to claim 3, characterized in that: The external force applying part (4) is a push-pull dynamometer, and the ball head (41) is installed on a screw rod of the push-pull dynamometer.

6. A pump shaft runout detection device according to claim 4, characterized in that: It comprises a translation mechanism (8) corresponding to the lever gauge (7), and the lever gauge (7) is displaced closer to or farther from the driven gear (3) via the translation mechanism (8).

7. A pump shaft runout detection device according to claim 6, characterized in that: The feeding mechanism (9) and the translation mechanism (8) are both screw push-pull mechanisms.

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