Special centering device for coupling of steam-distribution driven induced draft fan

Abstract

The utility model relates to the technical field of centering of a coupling of a steam distribution driven induced draft fan, in particular to a special centering device for the coupling of the steam distribution driven induced draft fan. According to the technical scheme, the device comprises a mounting base fixedly connected to the coupler; the first dial indicator mounting mechanism is connected to the mounting base, and a dial indicator is mounted on the first dial indicator mounting mechanism and used for measuring the radial deviation of the coupler; the second dial indicator mounting mechanism is connected to the mounting base, and a dial indicator is mounted on the second dial indicator mounting mechanism and used for measuring the axial deviation of the coupler. According to the utility model, through the design of the mounting base, the first dial indicator mounting mechanism and the second dial indicator mounting mechanism, the two dial indicators can be quickly fixed on the coupler, and the measuring heads of the dial indicators can be vertical to the outer edge and the end face of the coupler only by slightly adjusting the distance, so that the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of centering of a coupling of a steam-driven induced draft fan, in particular to a special device for centering of a coupling of a steam-driven induced draft fan. Background Art

[0002] During the maintenance of rotating equipment such as induced draft fans that can be driven by steam-driven equipment, the coupling needs to be centered in order to correct the concentricity and ensure high-speed rotation of the equipment.

[0003] The existing alignment method is usually to use two dial indicators, one of which is in vertical contact with the rear end face of the coupling to measure the axial deviation, and the other is in vertical contact with the outer edge of the coupling to measure the radial deviation. The two dial indicators need to be installed and adjusted separately, which is inconvenient to operate. Therefore, the utility model proposes a special device for centering the coupling of a steam-driven induced draft fan that is easy to install. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes a special device for centering a coupling of a steam-driven induced draft fan.

[0005] The technical solution of the utility model is a special device for finding the center of a coupling of a steam-driven induced draft fan, comprising: a mounting base fixedly connected to the coupling; a first dial indicator mounting mechanism connected to the mounting base, wherein the first dial indicator mounting mechanism is installed with a dial indicator for measuring the radial deviation of the coupling; and a second dial indicator mounting mechanism connected to the mounting base, wherein the second dial indicator mounting mechanism is installed with a dial indicator for measuring the axial deviation of the coupling.

[0006] Optionally, the mounting base includes a first mounting plate, a second mounting plate, a locking screw shaft having one end fixedly connected to the second mounting plate and the other end movably passing through the first mounting plate, and a locking nut threadedly engaged with the locking screw shaft.

[0007] Optionally, the first dial indicator mounting mechanism includes a first connecting arm whose one end is clamped with the first mounting clamp, a guide shaft and a first pitch-adjusting screw shaft connected to the other end of the first connecting arm, a first guide sleeve fixedly connected to one of the dial indicators and movably connected to the guide shaft, and a first threaded sleeve spirally connected to the first pitch-adjusting screw shaft.

[0008] Optionally, the first dial indicator mounting mechanism further includes a fixed support clamp fixed to the outer wall of the first mounting clamp plate for the first connecting arm to be clamped in, and a first limiting nut threadedly engaged with the first connecting arm.

[0009] Optionally, the second dial indicator mounting mechanism includes a second connecting arm having one end engaged with the second mounting clamp, a second pitch adjusting screw shaft rotatably connected to the other end of the second connecting arm via a bearing, a second guide sleeve fixedly connected to another dial indicator and movably sleeved with the second connecting arm, and a second threaded sleeve spirally sleeved with the second pitch adjusting screw shaft.

[0010] Optionally, the second dial indicator mounting mechanism further includes a second limiting nut threadably engaged with the second connecting arm.

[0011] Optionally, the first mounting clamp plate is provided with a first slot, and one end of the first connecting arm is fixedly connected with a first clamping block which can be horizontally inserted into the first slot.

[0012] Optionally, the second mounting clamp plate is provided with a second slot, and one end of the second connecting arm is fixedly connected with a second clamping block which can be horizontally inserted into the second slot.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] The present application can quickly fix two dial indicators on the coupling through the design of the mounting base, the first dial indicator mounting mechanism, and the second dial indicator mounting mechanism, and only a slight adjustment is needed to make the measuring head of the dial indicator perpendicular to the outer edge and end face of the coupling, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural diagram of a special device for finding the center of a steam-driven induced draft fan coupling;

[0016] Figure 2 for Figure 1 Schematic diagram of the main viewing direction structure;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure from another perspective of the middle part.

[0018] Reference numerals: 1, coupling;

[0019] 2. Mounting base; 21. First mounting clamping plate; 211. First clamping slot; 22. Second mounting clamping plate; 221. Second clamping slot; 23. Locking screw shaft; 24. Locking nut;

[0020] 3. First dial indicator installation mechanism; 31. First connecting arm; 311. First clamping block; 32. Guide shaft; 33. First pitch adjustment screw shaft; 34. First guide sleeve; 35. First threaded sleeve; 36. Fixed support clamp; 37. First limit nut;

[0021] 4. Second dial indicator installation mechanism; 41. Second connecting arm; 411. Second clamping block; 42. Second pitch adjustment screw shaft; 43. Second guide sleeve; 44. Second threaded sleeve; 45. Second limit nut;

[0022] 5. Vernier indicator. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1-3 As shown, the utility model proposes a special device for centering a coupling of a steam-driven induced draft fan, comprising a mounting base 2 fixedly connected to a coupling 1, a first dial indicator mounting mechanism 3 connected to the mounting base 2, a second dial indicator mounting mechanism 4, and a pair of dial indicators 5 respectively mounted on the first dial indicator mounting mechanism 3 and the second dial indicator mounting mechanism 4, the two dial indicators 5 respectively measure radial deviation and axial deviation to achieve the purpose of alignment.

[0027] In the present invention, the mounting base 2 includes a first mounting clamping plate 21, a second mounting clamping plate 22, a pair of locking screw shafts 23 with one end fixedly connected to the second mounting clamping plate 22 and the other end movably passing through the first mounting clamping plate 21, and a locking nut 24 threadedly engaged with the locking screw shaft 23. When the locking nut 24 is rotated, the locking nut 24 moves downward by threading with the locking screw shaft 23, and when the locking nut 24 presses the upper surface of the first mounting clamping plate 21, the mounting base 2 can be fixedly mounted on the coupling 1.

[0028] Furthermore, the components of the first dial gauge installation mechanism 3 and the connection relationship between them are as follows: one end of the first connecting arm 31 is fixedly connected to the first clamping block 311, and the first mounting clamping plate 21 is provided with a first clamping groove 211 for the first clamping block 311 to be clamped horizontally. The other end of the first connecting arm 31 is fixedly connected to a guide shaft 32 and rotatably connected to a first pitch-adjusting screw shaft 33. The dial gauge 5 installed on the first dial gauge installation mechanism 3 is fixedly connected to a first guide sleeve 34 and a first threaded sleeve 35. The first guide sleeve 34 is movably sleeved with the guide shaft 32, and the first threaded sleeve 35 is spirally sleeved with the first pitch-adjusting screw shaft 33. When the first pitch-adjusting screw shaft 33 is rotated, the position of the dial gauge 5 can be adjusted by the threaded engagement between the first pitch-adjusting screw shaft 33 and the first threaded sleeve 35, so that the probe of the dial gauge 5 can be in contact with the outer edge surface of the coupling 1 to measure the radial deviation, and at this time the probe is just perpendicular to the outer edge surface and no additional adjustment is required;

[0029] In addition, the first dial gauge mounting mechanism 3 also includes a fixing bracket 36 fixed to the outer wall of the first mounting clamp plate 21 for the first connecting arm 31 to be inserted into, and a first limiting nut 37 threadedly engaged with the first connecting arm 31. When the first limiting nut 37 is rotated, the first limiting nut 37 presses the fixing bracket 36 and prevents it from rotating further, and at this time, the first dial gauge mounting mechanism 3 is fixed to the first mounting clamp plate 21.

[0030] Specifically, the components of the second dial indicator mounting mechanism 4 and the connection relationship between them are as follows: one end of the second connecting arm 41 is fixedly connected to the second clamping block 411, and the second mounting clamping plate 22 is provided with a second clamping groove 221 for the second clamping block 411 to be horizontally clamped. The other end of the second connecting arm 41 is rotatably connected to a second pitch-adjusting screw shaft 42 through a pair of bearings. The dial indicator 5 installed on the second dial indicator mounting mechanism 4 is fixedly connected to a second guide sleeve 43 and a second threaded sleeve 44, the second guide sleeve 43 is movably sleeved with the second connecting arm 41, and the second threaded sleeve 44 is spirally sleeved with the second pitch-adjusting screw shaft 42. When the second pitch-adjusting screw shaft 42 is rotated, the position of the dial indicator 5 can be adjusted by the threaded engagement between the second pitch-adjusting screw shaft 42 and the second threaded sleeve 44, so that the probe of the dial indicator 5 can be in contact with the end face of the coupling 1 to measure the axial deviation, and at this time the probe is just perpendicular to the end face, and no additional adjustment is required;

[0031] In addition, the second dial gauge mounting mechanism 4 also includes a second limiting nut 45 threadedly engaged with the second connecting arm 41. When the second limiting nut 45 is rotated, the second limiting nut 45 presses the second mounting clamping plate 22 and cannot be further screwed, and the second dial gauge mounting mechanism 4 is fixed on the second mounting clamping plate 22.

[0032] The working principle of this embodiment is: through the design of the mounting base 2, the first dial indicator mounting mechanism 3, and the second dial indicator mounting mechanism 4, the two dial indicators 5 can be quickly fixed on the coupling 1, and only a slight adjustment is needed to make the probe of the dial indicator 5 perpendicular to the outer edge and end face of the coupling 1, which is convenient to operate.

[0033] Specifically, the first mounting clamping plate 21 and the second mounting clamping plate 22 are respectively placed on the upper and lower sides of the coupling 1, and then the distance between the two is adjusted so that the locking screw shaft 23 passes through the first mounting clamping plate 21, and then the locking nut 24 is screwed from the top of the locking screw shaft 23 until the locking nut 24 presses the first mounting clamping plate 21 and cannot be screwed any further. At this time, the mounting base 2 is fixed on the coupling 1 as shown in the figure;

[0034] Subsequently, the first dial gauge installation mechanism 3 and the second dial gauge installation mechanism 4 are installed in sequence;

[0035] When installing the first dial gauge installation mechanism 3, first vertically place the first connecting arm 31 into the fixed support clamp 36, then translate the entire first dial gauge installation mechanism 3 to the right, so that the first clamping block 311 at the bottom of the first connecting arm 31 is horizontally clamped into the first clamping groove 211, and then the first limiting nut 37 is screwed, so that the first limiting nut 37 presses the fixed support clamp 36 and cannot be screwed any further, and the first dial gauge installation mechanism 3 is fixed on the first mounting clamp plate 21. Afterwards, it is only necessary to rotate the first pitch adjustment screw shaft 33, and adjust the position of the dial gauge 5 by screwing the first pitch adjustment screw shaft 33 and the first threaded sleeve 35, so that the probe of the dial gauge 5 contacts the outer edge surface of the coupling 1 to measure the radial deviation, and at this time the probe is just perpendicular to the outer edge surface, and no additional adjustment is required;

[0036] When installing the second dial gauge installation mechanism 4, the second clamping block 411 at the end of the second connecting arm 41 is horizontally clamped into the second clamping groove 221, and then the second limiting nut 45 is rotated to make the second limiting nut 45 press the second mounting clamping plate 22 and stop being screwed. At this time, the second dial gauge installation mechanism 4 is fixed on the second mounting clamping plate 22. Afterwards, it is only necessary to rotate the second pitch adjustment screw shaft 42, and adjust the position of the dial gauge 5 through the threaded engagement between the second pitch adjustment screw shaft 42 and the second threaded sleeve 44, so that the probe of the dial gauge 5 contacts the end face of the coupling 1 to measure the axial deviation, and at this time the probe is just perpendicular to the end face, and no additional adjustment is required.

[0037] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A special device for centering a coupling of a steam-driven induced draft fan, characterized in that: include: A mounting base (2) fixedly connected to the coupling (1), the mounting base (2) comprising a first mounting clamping plate (21), a second mounting clamping plate (22), a locking screw shaft (23) having one end fixedly connected to the second mounting clamping plate (22) and the other end movably passing through the first mounting clamping plate (21), and a locking nut (24) threadedly engaged with the locking screw shaft (23); A first dial gauge installation mechanism (3) connected to the installation base (2), wherein the first dial gauge installation mechanism (3) is installed with a dial gauge (5) for measuring the radial deviation of the coupling (1), and the first dial gauge installation mechanism (3) comprises a first connecting arm (31) with one end being snap-connected to the first installation clamping plate (21), a guide shaft (32) and a first pitch-adjusting screw shaft (33) connected to the other end of the first connecting arm (31), a first guide sleeve (34) fixedly connected to one of the dial gauges (5) and movably sleeved with the guide shaft (32), and a first threaded sleeve (35) spirally sleeved with the first pitch-adjusting screw shaft (33); A second dial gauge installation mechanism (4) connected to the installation base (2), the second dial gauge installation mechanism (4) installing a dial gauge (5) for measuring the axial deviation of the coupling (1), the second dial gauge installation mechanism (4) comprising a second connecting arm (41) having one end engaged with the second mounting clamp (22), a second pitch-adjusting screw shaft (42) rotatably connected to the other end of the second connecting arm (41) via a bearing, a second guide sleeve (43) fixedly connected to another dial gauge (5) and movably sleeved with the second connecting arm (41), and a second threaded sleeve (44) spirally sleeved with the second pitch-adjusting screw shaft (42).

2. A device for centering a coupling of a steam-driven induced draft fan according to claim 1, characterized in that: The first dial gauge mounting mechanism (3) further comprises a fixed support clamp (36) fixed to the outer wall of the first mounting clamp plate (21) for the first connecting arm (31) to be clamped therein, and a first limiting nut (37) threadedly engaged with the first connecting arm (31).

3. A device for centering a coupling of a steam-driven induced draft fan according to claim 2, characterized in that: The second dial indicator mounting mechanism (4) further comprises a second limiting nut (45) threadedly engaged with the second connecting arm (41).

4. A device for centering a coupling of a steam-driven induced draft fan according to claim 3, characterized in that: The first mounting clamping plate (21) is provided with a first clamping slot (211), and one end of the first connecting arm (31) is fixedly connected with a first clamping block (311) capable of being horizontally clamped into the first clamping slot (211).

5. A device for centering a coupling of a steam-driven induced draft fan according to claim 4, characterized in that: The second mounting clamping plate (22) is provided with a second clamping slot (221), and one end of the second connecting arm (41) is fixedly connected with a second clamping block (411) that can be horizontally clamped into the second clamping slot (221).

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