Centering detection assembly and gauge stand thereof

Abstract

The centering detection assembly comprises a connecting frame and a magnetic plate, the connecting frame is connected with a motor-side coupling, the magnetic plate is connected with the connecting frame, the magnetic plate extends from one side of the motor-side coupling to one side of a gear box along the axial direction of the motor-side coupling, and the magnetic plate is used for adsorbing a magnetic dial indicator. According to the utility model, the magnetic plate is connected to the motor-side coupling through the connecting frame, and the magnetic plate extends from one side of the motor-side coupling to one side of the gear box, so that the probe of the magnetic dial indicator adsorbed on the magnetic plate can contact the end surface and the peripheral surface of the gear box; therefore, the magnetic type dial indicator can detect the centering degree of the motor-side coupler through the indicator frame. In addition, bolts used for connecting the connecting frame and the flange plate of the motor side coupler are equivalently moved out of a narrow space between the flange plate of the motor side coupler and the flange plate of the gearbox side input shaft, so that space limitation is broken through, and connection of the connecting frame and the flange plate is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of centering detection, in particular to a centering detection component and a table frame thereof. Background Art

[0002] Nuclear power circulating water pumps need to be aligned and tested annually. Please refer to the attached Figure 1 During the alignment test, the circumferential deviation dial gauge 1a and the end face deviation dial gauge 2a need to be fixed on the motor side coupling 5a through the meter frame. The needle of the circumferential deviation dial gauge 1a points to the circumferential surface of the gear box 4a, and the needle of the end face deviation dial gauge 2a points to the end face of the gear box 4a. Then rotate the motor, observe and read the readings on the circumferential deviation dial gauge 1a and the end face deviation dial gauge 2a.

[0003] If the probe of the circumferential deviation dial gauge 1a jumps during the rotation of the motor side coupling 5a, the reading of the circumferential deviation dial gauge 1a will deviate, and the greater the degree of misalignment, the greater the amplitude of the jump, and the greater the reading deviation. If the reading deviation of the circumferential deviation dial gauge 1a is not within the qualified range, it is necessary to adjust the motor position and then repeatedly rotate the motor until the reading deviation of the circumferential deviation dial gauge 1a is within the qualified range.

[0004] If the probe of the end face deviation dial gauge 2a jumps during the rotation of the motor side coupling 5a, the reading of the end face deviation dial gauge 2a will deviate, and the worse the verticality between the motor side coupling 5a and the end face of the gear box 4a, the greater the amplitude of the probe jump of the end face deviation dial gauge 2a, and the greater the reading deviation. If the reading deviation of the end face deviation dial gauge 2a is not within the qualified range, it is necessary to adjust the motor position and then repeatedly rotate the motor until the reading deviation of the end face deviation dial gauge 2a is within the qualified range.

[0005] Magnetic dial gauges are widely used because of their easy installation. The magnetic dial gauge includes a magnetic meter stand and a dial gauge. When performing alignment inspection on a nuclear power circulating water pump, the magnetic meter stand of the magnetic dial gauge is adsorbed on the motor side coupling 5a. However, since the length of the magnetic meter stand in the axial direction of the motor side coupling is short, the probe of the dial gauge cannot touch the end face of the gear box 4a and the peripheral surface of the gear box 4a.

[0006] Therefore, how to design a meter stand through which a magnetic dial indicator can be connected to the motor side coupling and the probe of the magnetic dial indicator can contact the end face and peripheral surface of the gear box is a key issue that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0007] In view of this, the purpose of the present utility model is to design a dial gauge holder, through which a magnetic dial gauge can be connected to the motor-side coupling, and the probe of the magnetic dial gauge can contact the end face and circumferential face of the gearbox.

[0008] To achieve the above object, the present utility model provides the following technical solutions:

[0009] A dial gauge holder includes a connecting frame and a magnetic plate. The connecting frame is connected to the motor-side coupling, the magnetic plate is connected to the connecting frame, the magnetic plate extends along the axial direction of the motor-side coupling from one side of the motor-side coupling to the gearbox side, and the magnetic plate is for the magnetic dial gauge to adsorb on.

[0010] Preferably, the connecting frame includes a connecting frame body and a bolt seat. The connecting frame body is attached to the disk surface of the flange of the motor-side coupling. The connecting frame body extends radially out of the motor-side coupling along the radial direction of the motor-side coupling, and the extended part is the extended portion. The bolt seat is connected to the extended portion. A threaded hole is provided on the bolt seat, and a tightening bolt is screwed in the threaded hole. The tightening bolt abuts against the circumferential face or the back face of the flange, and the magnetic plate is connected to the end of the extended portion.

[0011] Preferably, the bolt seat includes a first seat plate with one end connected to the extended portion and the other end extending along the axial direction of the motor-side coupling and towards the motor-side coupling. The bolt seat further includes a second seat plate with one end connected to the first seat plate and the other end extending along the radial direction of the motor-side coupling and towards the central axis of the motor-side coupling. The threaded hole is provided on the second seat plate, and the tightening bolt abuts against the back face of the flange.

[0012] Preferably, along the radial direction of the motor-side coupling, both ends of the connecting frame body extend out of the motor-side coupling respectively, forming two extended portions, and one bolt seat is connected to each extended portion.

[0013] Preferably, the first seat plate is welded to the extended portion.

[0014] Preferably, the magnetic dial gauge includes a first magnetic dial gauge and a second magnetic dial gauge. The probe of the first magnetic dial gauge is used to abut against the circumferential face of the gearbox, and the probe of the second magnetic dial gauge is used to abut against the end face of the gearbox.

[0015] Preferably, the first magnetic dial gauge is adsorbed on the side face of the magnetic plate facing away from the flange, and the second magnetic dial gauge is adsorbed on the side face of the magnetic plate facing the flange.

[0016] Preferably, there are two magnetic attraction plates, which are distributed on both sides of the motor-side coupling in the radial direction. The first magnetic attraction dial indicator and the second magnetic attraction dial indicator are respectively adsorbed on the two magnetic attraction plates.

[0017] Preferably, the connecting frame is made of carbon steel; the magnetic attraction plate is made of iron.

[0018] The present utility model also provides an alignment detection assembly, including a first magnetic attraction dial indicator, a second magnetic attraction dial indicator and a dial indicator frame, and the dial indicator frame is any one of the above-mentioned dial indicator frames.

[0019] It can be seen from the above technical solutions that: in the present utility model, the magnetic attraction plate is connected to the motor-side coupling through the connecting frame, and the magnetic attraction plate extends from one side of the motor-side coupling to the side of the gearbox. The probe of the magnetic attraction dial indicator adsorbed on the magnetic attraction plate can contact the end face and the circumferential face of the gearbox. In this way, the magnetic attraction dial indicator can detect the alignment degree of the motor-side coupling through the dial indicator frame in the present utility model. In addition, the present utility model is equivalent to moving the bolts of the flange used to connect the connecting frame and the motor-side coupling out of the narrow space between the flange of the motor-side coupling and the flange of the input shaft on the gearbox side, thereby breaking through the space limitation and facilitating the connection between the connecting frame and the flange. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0021] Figure 1 It is a structural schematic diagram of a dial indicator frame for alignment detection disclosed in the specific implementation of the prior art;

[0022] Figure 2 It is a usage state diagram of the alignment detection assembly provided by the specific embodiment of the present utility model;

[0023] Figure 3 For Figure 2 Top view;

[0024] Figure 4 It is a front view of the dial indicator frame provided by the specific embodiment of the present utility model;

[0025] Figure 5 It is a top view of the dial indicator frame provided by the specific embodiment of the present utility model;

[0026] Figure 6 It is a side view of the dial indicator frame provided by the specific embodiment of the present utility model.

[0027] Among them, the names of each component are as follows:

[0028] 1a - Circumferential deviation dial indicator, 2a - End face deviation dial indicator, 3a - Dial indicator stand, 4a - Gearbox, 5a - Motor - side coupling, 51a - Coupling flange;

[0029] 11 - Connecting frame body, 12 - Bolt seat, 13 - Magnetic adsorption plate, 14 - Tightening bolt, 2 - Motor - side coupling, 21 - Flange, 3 - Gearbox - side input shaft, 31 - Flange, 4 - Gearbox, 5 - First magnetic - adsorption type dial indicator, 6 - Second magnetic - adsorption type dial indicator, 110 - Protrusion. Specific implementation manners

[0030] The core of the present utility model lies in disclosing a dial indicator stand, by which a magnetic - adsorption type dial indicator can be connected to the motor - side coupling, and the probe of the magnetic - adsorption type dial indicator can contact the end face and circumferential face of the gearbox. Another core of the present utility model is to disclose an alignment detection assembly having the above - mentioned dial indicator stand.

[0031] In order to enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0032] Please refer to the attached Figure 2 - attached Figure 6 , the present utility model discloses a dial indicator stand, which includes a connecting frame and a magnetic adsorption plate 13. The connecting frame is connected to the motor - side coupling 2, and the magnetic adsorption plate 13 is connected to the connecting frame. The magnetic adsorption plate 13 extends along the axial direction of the motor - side coupling 2 from one side of the motor - side coupling 2 to one side of the gearbox 4. The magnetic adsorption plate 13 is for the magnetic - adsorption type dial indicator to adsorb.

[0033] In the present utility model, the magnetic adsorption plate 13 is connected to the motor - side coupling 2 through the connecting frame, and the magnetic adsorption plate 13 extends from one side of the motor - side coupling 2 to one side of the gearbox 4. The probe of the magnetic - adsorption type dial indicator adsorbed on the magnetic adsorption plate 13 can contact the end face and circumferential face of the gearbox 4. Thus, the magnetic - adsorption type dial indicator can detect the alignment degree of the motor - side coupling 2 through the dial indicator stand in the present utility model.

[0034] The coupling 2 on the motor side has a flange 21, and the flange 21 has threaded holes. If the connecting frame is to be connected to the coupling 2 on the motor side, the usual method is to fit the connecting frame to the surface of the flange 21, and by means of the threaded holes on the flange 21, connect the connecting frame to the flange 21 through bolts. However, when performing alignment detection on the nuclear power circulating water pump, the gap between the flange 21 of the coupling 2 on the motor side and the flange 31 of the input shaft 3 on the gearbox side is very small, approximately 25 mm. The space between the flange 21 of the coupling 2 on the motor side and the flange 31 of the input shaft 3 on the gearbox side is too small to accommodate bolts, so the connecting frame cannot be locked to the flange 21 of the coupling 2 on the motor side through bolts.

[0035] In order to break through the space limitation between the flange 21 of the coupling 2 on the motor side and the flange 31 of the input shaft 3 on the gearbox side, the following design is made in the specific embodiment of the present utility model: The connecting frame includes a connecting frame body 11 and a bolt seat 12. The connecting frame body 11 is fitted to the surface of the flange 21 of the coupling 2 on the motor side. The connecting frame body 11 extends radially along the coupling 2 on the motor side outside the flange 21 of the coupling 2 on the motor side, and the extended part is the extended portion 110. The bolt seat 12 is connected to the extended portion 110, and the bolt seat 12 is provided with threaded holes, and a tightening bolt 14 is screwed into the threaded holes, and the tightening bolt 14 abuts against the circumferential surface or the back surface of the flange 21 of the coupling 2 on the motor side. The back surface of the flange 21 refers to the surface of the flange 21 opposite to the surface. This specific embodiment is equivalent to moving the bolt for connecting the connecting frame and the flange 21 of the coupling 2 on the motor side out of the narrow space between the flange 21 of the coupling 2 on the motor side and the flange 31 of the input shaft 3 on the gearbox side, thereby breaking through the space limitation and facilitating the connection between the connecting frame and the flange 21.

[0036] The magnetic attraction plate 13 is connected to the extended portion 110 of the connecting frame, and the magnetic attraction plate 13 extends from the connecting frame along the axial direction of the coupling 2 on the motor side towards the gearbox 3. The magnetic type dial indicator is adsorbed on the magnetic attraction plate 13.

[0037] The bolt seat 12 specifically includes a first seat plate and a second seat plate. One end of the first seat plate is connected to the protruding portion 110 of the connecting frame, and the other end extends along the axial direction of the motor-side coupling 2 and towards the motor-side coupling 2. One end of the second seat plate is connected to the first seat plate, and the other end extends along the radial direction of the motor-side coupling 2 and towards the central axis of the motor-side coupling 2. The first seat plate and the second seat plate form an L-shaped bolt seat 12. A threaded hole for screwing the tightening bolt 14 is provided on the second seat plate. The tightening bolt 14 screwed into the threaded hole abuts against the back surface of the flange 21. The back surface of the flange 21 is generally flat, and the end surface of the tail of the tightening bolt 14 is also flat. Therefore, the tightening bolt 14 abutting against the back surface of the flange 21 can ensure that there is sufficient contact area between the tightening bolt 14 and the flange 21, and thus ensure the tightening force between the tightening bolt 14 and the flange 21.

[0038] Further, along the radial direction of the motor-side coupling 2, both ends of the connecting frame body 11 protrude outside the motor-side coupling 2 respectively, thus forming two protruding portions 110. A bolt seat 12 is connected to each protruding portion 110, and a tightening bolt 14 is screwed into the threaded hole of each bolt seat 12. In this way, the connecting frame is connected to the motor-side coupling 2 by two tightening bolts 14 distributed on both radial sides of the flange 21, improving the firmness of the connection of the connecting frame.

[0039] In a specific embodiment of the present utility model, the first seat plate is welded to the protruding portion 110 by welding. The magnetic attraction plate 13 is welded to the connecting frame body 11 by welding.

[0040] The magnetic attraction type dial indicator includes a first magnetic attraction type dial indicator 5 and a second magnetic attraction type dial indicator 6. The probe of the first magnetic attraction type dial indicator 5 is used to abut against the circumferential surface of the gearbox 4 to measure the circumferential deviation. The probe of the second magnetic attraction type dial indicator 6 is used to abut against the end surface of the gearbox 4 to measure the end surface deviation. The circumferential deviation and the end surface deviation reflect the alignment degree of the motor-side coupling 2 from two dimensions.

[0041] There may be two magnetic attraction plates 13, and the two magnetic attraction plates 13 are respectively connected to the two protruding portions 110 of the connecting frame body 11. The first magnetic attraction type dial indicator 5 and the second magnetic attraction type dial indicator 6 are respectively adsorbed on the two magnetic attraction plates 13.

[0042] Considering the simplification of the dial indicator frame structure, only one magnetic attraction plate 13 may be provided, that is, the magnetic attraction plate 13 is only connected to one protruding portion 110. The magnetic attraction dial indicator frame of the first magnetic attraction type dial indicator 5 is adsorbed on the outer side surface of the magnetic attraction plate 13, that is, adsorbed on the side of the magnetic attraction plate 13 facing away from the flange 21 of the motor-side coupling 2. The magnetic attraction dial indicator frame of the second magnetic attraction type dial indicator 6 is adsorbed on the inner side surface of the magnetic attraction plate 13, that is, adsorbed on the side of the magnetic attraction plate 13 facing the flange 21 of the motor-side coupling 2.

[0043] In a specific embodiment of the present utility model, the materials of the connecting frame body 11 and the bolt seat 12 are preferably carbon steel. The magnetic suction plate 13 is preferably an iron plate.

[0044] The using method of the watch holder provided by the present utility model is as follows: Withdraw the tightening bolt 14 from the bolt seat 12, and move the watch holder from the side to the flange 21 of the motor-side coupling 2 in the direction with the paper surface facing inwards as shown in the attachment, or in the direction indicated by the arrow in the attachment. Figure 2 Tighten the two tightening bolts 14 so that the tail end faces of the two tightening bolts 14 abut against the back of the flange 21 of the motor-side coupling 2. Figure 3 Adsorb the first magnetic suction type dial indicator 5 on the outer side of the magnetic suction plate 13, and adsorb the second magnetic suction type dial indicator 6 on the inner side of the magnetic suction plate 13. Rotate the motor and read the readings on the first magnetic suction type dial indicator 5 and the second magnetic suction type dial indicator 6.

[0045] The present utility model also discloses a centering detection assembly, which includes a first magnetic suction type dial indicator 5, a second magnetic suction type dial indicator 6 and a watch holder. The first magnetic suction type dial indicator 5 and the second magnetic suction type dial indicator 6 are adsorbed on the watch holder. In particular, the watch holder is any one of the above-mentioned watch holders. Since the above-mentioned watch holder has the above-mentioned effects, the centering detection assembly with the above-mentioned watch holder also has the above-mentioned effects, so it will not be elaborated herein.

[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "outer side", "inner side", "center", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A watch stand, characterized in that, It includes a connecting frame and a magnetic attraction plate (13). The connecting frame is connected to the motor-side coupling (2), the magnetic attraction plate (13) is connected to the connecting frame, the magnetic attraction plate (13) extends along the axial direction of the motor-side coupling (2) from one side of the motor-side coupling (2) to the side of the gearbox (4), and the magnetic attraction plate (13) is for the magnetic-dial indicator to adsorb; the connecting frame includes a connecting frame body (11) and a bolt seat (12). The connecting frame body (11) is in contact with the disk surface of the flange (21) of the motor-side coupling (2). The connecting frame body (11) extends out of the flange (21) along the radial direction of the motor-side coupling (2), and the extended part is the extended part (110). The bolt seat (12) is connected to the extended part (110). A threaded hole is provided on the bolt seat (12), and a tightening bolt (14) is screwed in the threaded hole. The tightening bolt (14) presses against the peripheral surface or the back surface of the flange (21). The magnetic attraction plate (13) is connected to the end of the extended part (110).

2. The table frame according to claim 1, characterized in that, The bolt seat (12) includes a first seat plate with one end connected to the extended part (110) and the other end extending along the axial direction of the motor-side coupling (2) and towards the motor-side coupling (2). The bolt seat (12) further includes a second seat plate with one end connected to the first seat plate and the other end extending along the radial direction of the motor-side coupling (2) and towards the central axis of the motor-side coupling (2). The threaded hole is provided on the second seat plate, and the tightening bolt (14) presses against the back surface of the flange (21).

3. The table frame according to claim 2, characterized in that, Along the radial direction of the motor-side coupling (2), both ends of the connecting frame body (11) extend out of the flange (21) respectively, forming two extended parts (110), and one bolt seat (12) is connected to each extended part (110).

4. The table frame according to claim 2, characterized in that, The first seat plate is welded to the extended part (110).

5. The table frame according to claim 1, characterized in that, The magnetic-dial indicator includes a first magnetic-dial indicator (5) and a second magnetic-dial indicator (6). The probe of the first magnetic-dial indicator (5) is used to abut against the peripheral surface of the gearbox (4), and the probe of the second magnetic-dial indicator (6) is used to abut against the end face of the gearbox (4).

6. The table frame according to claim 5, characterized in that, The first magnetic-dial indicator (5) is adsorbed on the side surface of the magnetic attraction plate (13) facing away from the flange (21), and the second magnetic-dial indicator (6) is adsorbed on the side surface of the magnetic attraction plate (13) facing the flange (21).

7. The table frame according to claim 5, wherein There are two magnetic attraction plates (13), and the two magnetic attraction plates (13) are distributed on both sides in the radial direction of the motor-side coupling (2). The first magnetic-dial indicator (5) and the second magnetic-dial indicator (6) are respectively adsorbed on the two magnetic attraction plates (13).

8. The table frame according to claim 1, characterized in that, The material of the connecting frame is carbon steel; the magnetic attraction plate (13) is an iron plate.

9. A centering detection component, comprising a first magnetic dial indicator (5), a second magnetic dial indicator (6) and a dial indicator stand, characterized in that, The dial indicator frame is the dial indicator frame according to any one of claims 1-8.

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