阅读说明：本技术 一种同心度检测装置及其检测方法 (Concentricity detection device and detection method thereof ) 是由 鲁旻 王培� 张伟捷 于 2019-12-20 设计创作，主要内容包括：本发明公开了一种同心度检测装置及其检测方法,涉及空调技术领域。该同心度检测装置包括安装圆环、第一固定杆、第二固定杆、第一活动杆、第二活动杆和定位件。第一固定杆和第二固定杆均固定连接于安装圆环上,第一活动杆与第一固定杆活动连接,第二活动杆与第二固定杆活动连接,第一活动杆通过定位件与第二活动杆连接。与现有技术相比,本发明提供的同心度检测装置能够对第一待测物体和第二待测物体的同心度进行精准检测,误差小,精确度高,以便于对两者的相对位置进行调整,保证出厂时两者的同心度高,提高产品质量。(The invention discloses a concentricity detection device and a detection method thereof, and relates to the technical field of air conditioners. The concentricity detection device comprises an installation ring, a first fixed rod, a second fixed rod, a first movable rod, a second movable rod and a positioning piece. First dead lever and the equal fixed connection of second dead lever are on the installation ring, first movable rod and first dead lever swing joint, and second movable rod and second dead lever swing joint, first movable rod pass through the setting element and are connected with the second movable rod. Compared with the prior art, the concentricity detection device provided by the invention can be used for accurately detecting the concentricity of the first object to be detected and the second object to be detected, has small error and high accuracy, is convenient for adjusting the relative position of the first object to be detected and the second object to be detected, ensures high concentricity of the first object to be detected and the second object to be detected when leaving a factory, and improves the product quality.)

1. The concentricity detection device is characterized by comprising an installation circular ring (110), a first fixed rod (120), a second fixed rod (130), a first movable rod (140), a second movable rod (150) and a positioning piece (160), wherein the first fixed rod (120) and the second fixed rod (130) are the same in length and are perpendicular to each other, one end of the first fixed rod (120) is fixedly connected to the installation circular ring (110) and is fixedly connected with one end of the second fixed rod (130), the other end of the first fixed rod (120) and the other end of the second fixed rod (130) are fixedly connected to the installation circular ring (110), the first movable rod (140) is movably connected with the first fixed rod (120), the second movable rod (150) is movably connected with the second fixed rod (130), and the first movable rod (140) is connected with the second movable rod (150) through the positioning piece (160), the positioning member (160) can be located at the center of the installation ring (110) when the first movable rod (140) moves to the middle of the first fixed rod (120) and the second movable rod (150) moves to the middle of the second fixed rod (130).

2. The concentricity detection device according to claim 1, wherein the positioning member (160) comprises a cylinder (161), a first through hole (166) and a second through hole (167) are formed in a circumferential surface (163) of the cylinder (161) along a radial direction of the cylinder (161), the first through hole (166) and the second through hole (167) are arranged in a staggered manner, the first movable rod (140) is slidably arranged in the first through hole (166), and the second movable rod (150) is slidably arranged in the second through hole (167).

3. The concentricity detection apparatus according to claim 2, wherein an axial direction of the first through hole (166) and an axial direction of the second through hole (167) are perpendicular to each other.

4. The concentricity detection device according to claim 2, wherein the positioning member (160) further comprises a thimble (162), the cylinder (161) is oppositely provided with a first end surface (164) and a second end surface (165), and the thimble (162) is fixedly connected to the middle of the first end surface (164).

5. The concentricity detection apparatus according to claim 4, wherein an angle scale mark is provided on the second end face (165).

6. The concentricity detection device according to any one of claims 1 to 5, further comprising a first sliding sleeve (170), wherein the first sliding sleeve (170) is sleeved outside the first fixed rod (120) and can slide along the length direction of the first fixed rod (120), and the first movable rod (140) is fixedly connected with the first sliding sleeve (170).

7. The concentricity detection device according to any one of claims 1 to 5, further comprising a second sliding sleeve (180), wherein the second sliding sleeve (180) is sleeved outside the second fixed rod (130) and can slide along the length direction of the second fixed rod (130), and the second movable rod (150) is fixedly connected with the second sliding sleeve (180).

8. The concentricity testing device according to any one of claims 1 to 5, wherein length scale marks are provided on both the first fixing rod (120) and the second fixing rod (130).

9. The concentricity detection apparatus according to any one of claims 1 to 5, further comprising an angle scale plate (190), the angle scale plate (190) being fixedly connected to an intersection of the first fixing rod (120) and the second fixing rod (130).

10. A concentricity detection method applied to the concentricity detection apparatus according to any one of claims 1 to 8, the concentricity detection method comprising:

clamping the mounting ring (110) in a central circular hole of a first object to be detected;

sliding the first movable bar (140) to the middle of the first stationary bar (120) and the second movable bar (150) to the middle of the second stationary bar (130);

and comparing and observing the position of the positioning piece (160) and the central position of the second object to be detected, and if the position of the positioning piece (160) is aligned with the central position of the second object to be detected, the concentricity of the first object to be detected and the second object to be detected is high.

Technical Field

The invention relates to the technical field of air conditioners, in particular to a concentricity detection device and a detection method thereof.

Background

At present, fan blades and a flow guide ring are installed in an air conditioner outdoor unit, when the concentricity of the fan blades and the flow guide ring is poor, gaps between the fan blades and the flow guide ring are not uniform in the running process, and then the air outlet turbulence is aggravated, the vibration of the fan blades is increased, and the noise is increased. In addition, if the eccentricity of the fan blades is large, the fan blades are easily stuck in the transportation process of the air conditioner outdoor unit, and unqualified products are increased. Therefore, before leaving a factory, the concentricity of the fan blade and the flow guide ring needs to be detected, however, the general size is determined by testing the clearance around the fan blade and the flow guide ring in the existing detection mode, the error is large, and the measured concentricity is inaccurate.

Disclosure of Invention

The invention solves the problems that how to accurately detect the concentricity of the fan blade and the flow guide ring has small error and high accuracy, so that the relative position of the fan blade and the flow guide ring can be conveniently adjusted, the concentricity of the fan blade and the flow guide ring is high when the fan blade leaves a factory, and the product quality is improved.

In order to solve the above problems, the technical solution of the present invention is realized as follows:

in a first aspect, the invention provides a concentricity detection device, which comprises an installation ring, a first fixed rod, a second fixed rod, a first movable rod, a second movable rod and a positioning piece, wherein the first fixed rod and the second fixed rod are the same in length and are perpendicular to each other, one end of the first fixed rod is fixedly connected to the installation ring and is fixedly connected with one end of the second fixed rod, the other end of the first fixed rod and the other end of the second fixed rod are fixedly connected to the installation ring, the first movable rod is movably connected with the first fixed rod, the second movable rod is movably connected with the second fixed rod, the first movable rod is connected with the second movable rod through the positioning piece, and the positioning piece can be positioned at the center of the installation ring when the first movable rod moves to the middle of the first fixed rod and the second movable rod moves to the middle of the second fixed rod. Compared with the prior art, the concentricity detection device provided by the invention adopts the first fixed rod and the second fixed rod which are fixedly connected to the mounting ring and the first movable rod and the second movable rod which are movably connected, so that the concentricity of the first object to be detected and the second object to be detected can be accurately detected, the error is small, the accuracy is high, the relative position of the first object to be detected and the second object to be detected can be conveniently adjusted, the high concentricity of the first object to be detected and the second object to be detected is ensured when leaving a factory, and the product quality is improved.

Furthermore, the positioning part comprises a barrel, a first through hole and a second through hole are formed in the circumferential surface of the barrel along the radial direction of the barrel, the first through hole and the second through hole are arranged in a staggered mode, the first movable rod is arranged in the first through hole in a sliding mode, and the second movable rod is arranged in the second through hole in a sliding mode. The first movable rod and the second movable rod are prevented from interfering, and the concentricity detection efficiency is improved.

Further, the axial direction of the first through hole is perpendicular to the axial direction of the second through hole. So that the sliding direction of the first movable rod is perpendicular to the sliding direction of the second movable rod, thereby ensuring that the first movable rod and the second movable rod are perpendicular to each other.

Furthermore, the positioning piece further comprises a thimble, the cylinder body is oppositely provided with a first end surface and a second end surface, and the thimble is fixedly connected to the middle part of the first end surface. The position of the thimble is the central position of the first end surface, so that observation and judgment are facilitated, and the detection efficiency is improved.

Furthermore, the second end face is provided with angle scale marks. The angle scale mark is used for detecting the included angle of the first movable rod and the second movable rod so as to ensure that the first movable rod and the second movable rod are in a mutually perpendicular state when measuring the concentricity.

Furthermore, the concentricity detection device further comprises a first sliding sleeve, the first sliding sleeve is sleeved outside the first fixed rod and can slide along the length direction of the first fixed rod, and the first movable rod is fixedly connected with the first sliding sleeve. The first sliding sleeve can drive the first movable rod to slide along the length direction of the first fixed rod while sliding relative to the first fixed rod.

Furthermore, the concentricity detection device further comprises a second sliding sleeve, the second sliding sleeve is sleeved outside the second fixed rod and can slide along the length direction of the second fixed rod, and the second movable rod is fixedly connected with the second sliding sleeve. The second sliding sleeve can drive the second movable rod to slide along the length direction of the second fixed rod while sliding relative to the second fixed rod.

Further, length scale marks are arranged on the first fixing rod and the second fixing rod. So as to slide the first movable rod to the middle of the first fixed rod and slide the second movable rod to the middle of the second fixed rod.

Further, the concentricity detection device further comprises an angle ruler disc, and the angle ruler disc is fixedly connected to the intersection of the first fixing rod and the second fixing rod. The angle ruler disc is used for detecting an included angle between the first fixing rod and the second fixing rod so as to ensure that the first fixing rod and the second fixing rod are in a mutually perpendicular state when the concentricity is measured.

In a second aspect, the present invention provides a concentricity detection method, which is applied to the concentricity detection apparatus described above, and the concentricity detection method includes: clamping the mounting ring in a central circular hole of a first object to be detected; sliding the first movable rod to the middle of the first fixed rod, and sliding the second movable rod to the middle of the second fixed rod; and comparing the position of the observation positioning piece with the central position of the second object to be detected, and if the position of the positioning piece is aligned with the central position of the second object to be detected, the concentricity of the first object to be detected and the second object to be detected is high. The concentricity detection method can accurately detect the concentricity of the first object to be detected and the second object to be detected, has small error and high accuracy, so as to adjust the relative positions of the first object to be detected and the second object to be detected, ensure high concentricity of the first object to be detected and the second object to be detected when leaving a factory and improve the product quality.

Drawings

Fig. 1 is a schematic structural view illustrating a concentricity detecting apparatus according to a first embodiment of the present invention installed in an outdoor unit of an air conditioner;

fig. 2 is a schematic structural view of an outdoor unit of an air conditioner installed with the concentricity testing apparatus according to the first embodiment of the present invention;

FIG. 3 is a schematic view of a concentricity detection apparatus according to a first embodiment of the present invention;

FIG. 4 is a schematic view of another perspective of the concentricity detection apparatus according to the first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a positioning element in the concentricity detection apparatus according to the first embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a concentricity detection apparatus according to a third embodiment of the present invention;

fig. 7 is a block diagram illustrating the steps of a concentricity detection method according to a fourth embodiment of the present invention.

Description of reference numerals:

100-concentricity detection means; 110-mounting a circular ring; 120-a first fixing bar; 130-a second fixing bar; 140-a first movable bar; 150-a second movable bar; 160-a positioning element; 161-cylinder; 162-a thimble; 163-peripheral surface; 164-a first end face; 165-second end face; 166 — a first via; 167-a second via; 170-a first runner; 180-a second sliding sleeve; 190-angle ruler disk; 200-an air conditioner outdoor unit; 210-a flow guide ring; 220-fan blades.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

First embodiment

Referring to fig. 1 and fig. 2 in combination, an embodiment of the invention provides a concentricity detection apparatus 100 for detecting concentricity of a first object to be detected and a second object to be detected. It can carry out accurate detection to fan blade 220 and water conservancy diversion circle 210's concentricity, and the error is little, and the accuracy is high to adjust fan blade 220 and water conservancy diversion circle 210's relative position, guarantee that both concentricity is high when leaving the factory, improve product quality.

In this embodiment, the concentricity detection device 100 is applied to the field of air conditioners, the first object to be detected is the baffle ring 210 in the outdoor unit 200, the second object to be detected is the fan blade 220 in the outdoor unit 200, the concentricity detection device 100 is used for detecting the concentricity of the fan blade 220 and the baffle ring 210, so that a worker can conveniently adjust the relative positions of the fan blade 220 and the baffle ring 210, the concentricity of the fan blade 220 and the baffle ring 210 is high, the gap between the fan blade 220 and the baffle ring 210 in the operation process is uniform, the generated noise is reduced, and the phenomenon that the fan blade 220 is blocked is avoided. However, the invention is not limited thereto, and in other embodiments, the concentricity detection apparatus 100 may also be applied to the field of fans, the concentricity detection apparatus 100 is used for detecting the concentricity of fan blades and a housing, and the application scenario of the concentricity detection apparatus 100 is not particularly limited.

Referring to fig. 3 and 4, the concentricity detection apparatus 100 includes a mounting ring 110, a first fixed rod 120, a second fixed rod 130, a first movable rod 140, a second movable rod 150, a positioning member 160, a first sliding sleeve 170, a second sliding sleeve 180, and an angle scale 190. The first fixing rod 120 and the second fixing rod 130 have the same length and are perpendicular to each other, one end of the first fixing rod 120 is fixedly connected to the installation ring 110 and is fixedly connected to one end of the second fixing rod 130, and the other end of the first fixing rod 120 and the other end of the second fixing rod 130 are both fixedly connected to the installation ring 110, that is, the first fixing rod 120 and the second fixing rod 130 are both chords of the installation ring 110, and the two chords are crossed and perpendicular and have the same length. The first movable bar 140 is disposed parallel to the second fixed bar 130 and movably connected to the first fixed bar 120, and the first movable bar 140 can slide along the length direction of the first fixed bar 120 to be close to or far away from the second fixed bar 130. The second movable bar 150 is disposed parallel to the first fixed bar 120 and movably connected to the second fixed bar 130, and the second movable bar 150 can slide along the length direction of the second fixed bar 130 to be close to or far away from the first fixed bar 120. The first movable bar 140 is connected to the second movable bar 150 through a positioning member 160, the first movable bar 140 can slide relative to the positioning member 160, the second movable bar 150 can slide relative to the positioning member 160, and the positioning member 160 can be located at the center of the installation ring 110 when the first movable bar 140 moves to the middle of the first fixed bar 120 and the second movable bar 150 moves to the middle of the second fixed bar 130.

The first sliding sleeve 170 is sleeved outside the first fixed rod 120 and can slide along the length direction of the first fixed rod 120, the first movable rod 140 is fixedly connected with the first sliding sleeve 170, and the first sliding sleeve 170 can drive the first movable rod 140 to slide along the length direction of the first fixed rod 120 while sliding relative to the first fixed rod 120. The second sliding sleeve 180 is sleeved outside the second fixed rod 130 and can slide along the length direction of the second fixed rod 130, the second movable rod 150 is fixedly connected with the second sliding sleeve 180, and the second sliding sleeve 180 can drive the second movable rod 150 to slide along the length direction of the second fixed rod 130 while sliding relative to the second fixed rod 130. The angle scale disc 190 is fixedly connected to the intersection of the first fixing rod 120 and the second fixing rod 130, and the angle scale disc 190 is used for detecting an included angle between the first fixing rod 120 and the second fixing rod 130 so as to ensure that the first fixing rod 120 and the second fixing rod 130 are in a mutually perpendicular state when measuring concentricity.

It should be noted that the mounting ring 110 is mounted in the flow guiding ring 210, and the fan blades 220 are disposed inside the flow guiding ring 210. When the concentricity of the fan blade 220 and the flow guiding ring 210 is detected, firstly, the installation ring 110 is clamped in the flow guiding ring 210 to fix the relative positions of the installation ring 110 and the flow guiding ring 210, then, the first movable rod 140 and the second movable rod 150 are shifted to enable the first movable rod 140 to slide to the middle part of the first fixed rod 120, the second movable rod 150 to slide to the middle part of the second fixed rod 130, because the first fixed rod 120 and the second fixed rod 130 are vertical and have equal length, the first fixed rod 120, the first movable rod 140, the second movable rod 150 and the second fixed rod 130 are connected end to end and combined to form a square, at the moment, the positioning piece 160 moves to the central position of the installation ring 110, namely, the central position of the flow guiding ring 210, then, the central position of the positioning piece 160 and the fan blade 220 is observed, if the central position of the positioning piece 160 and the fan blade 220 are aligned, the central position of the flow guiding ring 210 is aligned with the central position of the fan blade 220, at this time, the concentricity of the guide ring 210 and the fan blade 220 is high; if the positioning member 160 has a certain deviation from the central position of the fan blade 220, the difference in concentricity between the baffle ring 210 and the fan blade 220 is described, and at this time, a worker needs to adjust the position of the fan blade 220 according to the deviation until the positioning member 160 is aligned with the central position of the fan blade 220.

In this embodiment, both ends of the first fixing rod 120 and both ends of the second fixing rod 130 are fixedly connected to the mounting ring 110, that is, the length of the first fixing rod 120 and the length of the second fixing rod 130 are equal to the chord length of the mounting ring 110. However, the present invention is not limited thereto, and in other embodiments, the first fixing rod 120 may also be disposed to extend out of the mounting ring 110, the second fixing rod 130 may also be disposed to extend out of the mounting ring 110, a portion of the first fixing rod 120 located inside the mounting ring 110 is a chord of the mounting ring 110, and a portion of the second fixing rod 130 located inside the mounting ring 110 is a chord of the mounting ring 110.

Referring to fig. 5, the positioning member 160 includes a cylinder 161 and a thimble 162. The cylinder 161 is provided with a circumferential surface 163, a first end surface 164, and a second end surface 165, the first end surface 164 and the second end surface 165 being disposed opposite to each other, the first end surface 164 being connected to the second end surface 165 via the circumferential surface 163, and the circumferential surface 163 being disposed between the first end surface 164 and the second end surface 165. The circumferential surface 163 of the cylinder 161 is provided with a first through hole 166 and a second through hole 167 along the radial direction of the cylinder 161, the first through hole 166 and the second through hole 167 are arranged in a staggered manner, the axial direction of the first through hole 166 is perpendicular to the axial direction of the second through hole 167, the first movable rod 140 is arranged in the first through hole 166 in a sliding manner, and the second movable rod 150 is arranged in the second through hole 167 in a sliding manner, so that the sliding direction of the first movable rod 140 is perpendicular to the sliding direction of the second movable rod 150, and therefore the first movable rod 140 and the second movable rod 150 are perpendicular to each other.

It should be noted that the thimble 162 is fixedly connected to the middle of the first end surface 164, and the position of the thimble 162 is the central position of the first end surface 164, that is, the position of the thimble 162 is the central position of the positioning element 160, and when detecting the concentricity of the fan blade 220 and the baffle ring 210, it is necessary to observe and determine whether the position of the thimble 162 is aligned with the central position of the fan blade 220, so as to facilitate observation and determination, and improve the detection efficiency. In addition, the second end surface 165 is provided with angle scale marks (not shown), and the angle scale marks are used for detecting an included angle between the first movable bar 140 and the second movable bar 150 so as to ensure that the first movable bar 140 and the second movable bar 150 are in a mutually perpendicular state when measuring concentricity.

In this embodiment, length scales (not shown) are disposed on both the first fixed bar 120 and the second fixed bar 130, so that the first movable bar 140 can be slid to the middle of the first fixed bar 120, and the second movable bar 150 can be slid to the middle of the second fixed bar 130.

It should be noted that when the center position of the thimble 162 of the positioning element 160 and the fan blade 220 has a certain deviation, the worker can shift the first movable rod 140 and the second movable rod 150 until the thimble 162 of the positioning element 160 is aligned with the center position of the fan blade 220, at this time, the position of the first movable rod 140 may no longer be located in the middle of the first fixed rod 120, the position of the second movable rod 150 may no longer be located in the middle of the second fixed rod 130, and the worker can directionally and quantitatively adjust the position of the fan blade 220 according to the deviation length of the middle portions of the first movable rod 140 and the first fixed rod 120 and the deviation length of the middle portions of the second movable rod 150 and the second fixed rod 130, so that the center position of the fan blade 220 is aligned with the thimble 162 of the positioning element 160, which is convenient and fast, and has high adjustment efficiency.

In the concentricity detection device 100 according to the embodiment of the present invention, the first fixed rod 120 and the second fixed rod 130 have the same length and are perpendicular to each other, one end of the first fixed rod 120 is fixedly connected to the installation ring 110 and is fixedly connected to one end of the second fixed rod 130, the other end of the first fixed rod 120 and the other end of the second fixed rod 130 are both fixedly connected to the installation ring 110, the first movable rod 140 is movably connected to the first fixed rod 120, the second movable rod 150 is movably connected to the second fixed rod 130, the first movable rod 140 is connected to the second movable rod 150 through the positioning member 160, and the positioning member 160 can be located at the center of the installation ring 110 when the first movable rod 140 moves to the middle of the first fixed rod 120 and the second movable rod 150 moves to the middle of the second fixed rod 130. Compared with the prior art, the concentricity detection device 100 provided by the invention adopts the first fixed rod 120 and the second fixed rod 130 which are fixedly connected to the mounting ring 110 and the first movable rod 140 and the second movable rod 150 which are movably connected, so that the concentricity of the first object to be detected and the second object to be detected can be accurately detected, the error is small, the accuracy is high, the relative position of the first object to be detected and the second object to be detected can be conveniently adjusted, the concentricity of the first object to be detected and the second object to be detected is high when the device leaves a factory, and the product quality is improved.

Second embodiment

The present invention provides a concentricity testing apparatus 100, which is different from the first embodiment in that the first sliding sleeve 170 is replaced by a first fixing member (not shown), and the second sliding sleeve 180 is replaced by a second fixing member (not shown).

It should be noted that the first movable bar 140 is detachably connected to the first fixed bar 120 through a first fixing member, and the first movable bar 140 can be detached from the first fixed bar 120. The second movable bar 150 is detachably connected to the second fixed bar 130 through a second fixing member, and the second movable bar 150 can be detached from the second fixed bar 130.

In this embodiment, the first fixing member and the second fixing member are both clamping members, the first fixing member can fix the first movable rod 140 on the first fixed rod 120 in a clamping manner, and the second fixing member can fix the second movable rod 150 on the second fixed rod 130 in a clamping manner. However, the present invention is not limited to this, and in other embodiments, the first fixing element and the second fixing element may be both adhesive elements or magnetic elements, and the fixing manner of the first fixing element and the second fixing element is not particularly limited.

When the concentricity of the fan blade 220 and the flow guiding ring 210 is detected, firstly, the installation ring 110 is clamped in the flow guiding ring 210 to fix the relative positions of the installation ring 110 and the flow guiding ring 210, then, the first fixing piece is used for fixing the first movable rod 140 in the middle of the first fixed rod 120, the second fixing piece is used for fixing the second movable rod 150 in the middle of the second fixed rod 130, because the first fixed rod 120 and the second fixed rod 130 are vertical and have equal length, the first fixed rod 120, the first movable rod 140, the second movable rod 150 and the second fixed rod 130 are connected end to end and combined to form a square, at this time, the positioning piece 160 moves to the central position of the installation ring 110, namely, the central position of the flow guiding ring 210 is observed, and if the positioning piece 160 is aligned with the central position of the fan blade 220, the central position of the flow guiding ring 210 is aligned with the central position of the fan blade 220, at this time, the concentricity of the guide ring 210 and the fan blade 220 is high; if the positioning member 160 has a certain deviation from the central position of the fan blade 220, the difference in concentricity between the baffle ring 210 and the fan blade 220 is described, and at this time, a worker needs to adjust the position of the fan blade 220 according to the deviation until the positioning member 160 is aligned with the central position of the fan blade 220.

The beneficial effects of the concentricity detection apparatus 100 according to the embodiment of the present invention are the same as those of the first embodiment, and are not described herein again.

Third embodiment

Referring to fig. 6, the present invention provides a concentricity testing apparatus 100, which is different from the first embodiment in that a first movable rod 140 is disposed obliquely to a first fixed rod 120, a second movable rod 150 is disposed obliquely to a second fixed rod 130, and a first through hole 166 and a second through hole 167 are parallel to each other.

It should be noted that the first movable bar 140 and the first fixed bar 120 form an included angle of 45 degrees, the second movable bar 150 and the second fixed bar 130 form an included angle of 45 degrees, one end of the first movable bar 140 is connected to one end of the first fixed bar 120 far away from the second fixed bar 130, the other end is connected to the second movable bar 150 through the positioning element 160, and the second movable bar 150 is connected to one end of the second fixed bar 130 far away from the first fixed bar 120.

When the concentricity of the fan blade 220 and the flow guiding ring 210 is detected, firstly, the installation ring 110 is clamped in the flow guiding ring 210 to fix the relative position of the installation ring 110 and the flow guiding ring 210, then, the first movable rod 140 and the second movable rod 150 are shifted to enable the first movable rod 140 to slide to one end of the first fixed rod 120 far away from the second fixed rod 130, the second movable rod 150 slides to one end of the second fixed rod 130 far away from the first fixed rod 120, then, the first movable rod 140 and the second movable rod 150 are connected by the positioning piece 160, so that the first movable rod 140 extends into the first through hole 166, the second movable rod 150 extends into the second through hole 167, at the moment, the first movable rod 140 and the second movable rod 150 are positioned on the same straight line, the first fixed rod 120, the first movable rod 140, the second movable rod 150 and the second fixed rod 130 are connected end to end, and form an isosceles right triangle in combination, and thus, the positioning piece 160 is positioned in the middle parts of the first movable rod 140 and the second movable rod 150, that is, the central position of the installation ring 110, that is, the positioning member 160 is located at the central position of the baffle ring 210, and then the central positions of the positioning member 160 and the fan blades 220 are observed, if the central positions of the positioning member 160 and the fan blades 220 are aligned, it is indicated that the central position of the baffle ring 210 is aligned with the central position of the fan blades 220, and at this time, the concentricity of the baffle ring 210 and the fan blades 220 is high; if the positioning member 160 has a certain deviation from the central position of the fan blade 220, the difference in concentricity between the baffle ring 210 and the fan blade 220 is described, and at this time, a worker needs to adjust the position of the fan blade 220 according to the deviation until the positioning member 160 is aligned with the central position of the fan blade 220.

The beneficial effects of the concentricity detection apparatus 100 according to the embodiment of the present invention are the same as those of the first embodiment, and are not described herein again.

Fourth embodiment

Referring to fig. 7, the present invention provides a concentricity detection method for detecting concentricity of a first object to be detected and a second object to be detected. The concentricity testing method is applied to the concentricity testing apparatus 100 in the first embodiment, the principle and the resulting technical effects of the concentricity testing method are the same as those of the first embodiment, and for the sake of brief description, corresponding contents in the first embodiment can be referred to for parts of the embodiment that are not mentioned.

Notably, the concentricity detection method includes the steps of:

step S101: the mounting ring 110 is clamped in the central circular hole of the first object to be measured.

It should be noted that, in step S101, the size of the central circular hole of the first object to be detected matches the size of the mounting ring 110, and the mounting ring 110 can be clamped in the central circular hole, so as to facilitate installation and detachment and improve the detection efficiency. In this embodiment, the first object to be measured is the flow guiding ring 210, and the central circular hole of the first object to be measured is a circular space surrounded by the flow guiding ring 210.

Step S102: the first movable bar 140 is slid to the middle of the first stationary bar 120, and the second movable bar 150 is slid to the middle of the second stationary bar 130.

In step S102, the first movable bar 140 is always kept parallel to the second stationary bar 130, and the second movable bar 150 is always kept parallel to the first stationary bar 120, so that the first movable bar 140 and the second movable bar 150 are kept perpendicular to each other. When the first movable rod 140 slides to the middle of the first fixed rod 120 and the second movable rod 150 slides to the middle of the second fixed rod 130, the first fixed rod 120, the first movable rod 140, the second movable rod 150 and the second fixed rod 130 are combined to form a square, and at this time, the positioning member 160 moves to the center of the installation ring 110, that is, to the center of the baffle ring 210.

Step S103: comparing the position of the observing positioning member 160 with the center position of the second object to be measured.

In this embodiment, the second object to be measured is the fan blade 220. In step S103, if the position of the positioning element 160 is aligned with the center position of the second object to be tested, the concentricity of the first object to be tested and the second object to be tested is high, that is, the concentricity of the fan blade 220 and the flow guiding ring 210 is high. If the position of the positioning element 160 is not aligned with the center position of the second object to be measured, the concentricity difference between the first object to be measured and the second object to be measured, that is, the concentricity difference between the fan blade 220 and the deflector ring 210, needs to be adjusted according to the deviation vector by the worker until the position of the positioning element 160 is aligned with the center position of the second object to be measured.

The beneficial effects of the concentricity detection method according to the embodiment of the invention are the same as those of the first embodiment, and are not described herein again.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.