Fan impeller bottom plate and impeller front disc concentricity control clamp

Abstract

The utility model discloses a concentricity control clamp for a bottom plate and a front disc of a fan impeller, relates to the technical field of impeller processing, and aims to solve the problems of inconvenience in assembly and unstable concentricity in the existing impeller assembly process. The concentricity control clamp comprises a positioning sleeve and a sliding seat, and support arms are annularly arrayed on the outer wall of the positioning sleeve; the lower portion of the positioning sleeve is rotationally connected with a rotary disc, the multiple sets of sliding seats are connected along the supporting arm in a sliding mode, and positioning components are arranged on the sliding seats. The rotary disc is arranged on the positioning sleeve, the sliding seats on the supporting arm are synchronously driven through the connecting rods, and therefore the impeller front disc is driven to move and be adjusted; the impeller bottom plate and the impeller front disc are assembled in a concentric fit mode, a rocking handle is used for manual adjustment, a lead screw and a sliding block are used for driving one set of sliding bases, so that other sliding bases are driven to move synchronously, operation is easy, use is convenient, practicability is high, assembling convenience is improved, and assembling concentricity accuracy is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller processing, in particular to a fixture for controlling the concentricity of a fan impeller bottom plate and an impeller front disk. Background Art

[0002] Impeller is an important component widely used in various mechanical equipment. It is mainly used to transfer the kinetic energy and static energy of the fluid, so that the fluid has pressure capacity, thereby realizing mechanical work. The currently commonly used centrifugal impeller consists of an impeller front disc, blades and an impeller base plate.

[0003] The impeller is installed on the rotor. In order to ensure that the impeller remains stable when the rotor rotates at high speed, the axis of the impeller base plate and the impeller front disc need to be located on the same axis during the impeller assembly process. In the existing assembly process, the concentricity control of the impeller base plate and the impeller front disc mostly relies on the proficiency and experience of the assembly workers, which makes the assembly process inconvenient and the assembly concentricity unstable.

[0004] Therefore, the present application provides a concentricity control fixture for the fan impeller base plate and the impeller front disc to meet the needs. Utility Model Content

[0005] The purpose of this application is to provide a concentricity control fixture for a fan impeller base plate and an impeller front disc, thereby improving assembly convenience and assembly concentricity.

[0006] To achieve the above objectives, the present application provides the following technical solution: a fixture for controlling the concentricity of a fan impeller base plate and an impeller front disc, comprising:

[0007] A positioning sleeve, wherein the outer wall of the positioning sleeve has support arms in an annular array, the support arms are arranged along the radial direction of the positioning sleeve, and the lower portion of the positioning sleeve is rotatably connected to a turntable;

[0008] The impeller includes an impeller base plate, blades and an impeller front disk. The blades are welded and installed on the impeller base plate, and the impeller front disk is welded to the other end of the blades. A shaft sleeve is provided on the impeller base plate, and a core shaft is inserted into the shaft sleeve. The positioning sleeve is then sleeved on the other end of the core shaft for concentricity positioning.

[0009] There are multiple groups of slides, and the slides are all slidably connected along the support arms, and positioning components are provided on the slides;

[0010] The positioning component is used to contact the impeller front disk.

[0011] The rotating disk is hinged with connecting rods, and the connecting rods are arranged in a circular array on the rotating disk. The ends of each group of connecting rods are hinged with a group of slides. The rotating disk can drive the slides to move synchronously, thereby driving the impeller front disk to be coaxial with the core shaft.

[0012] An adjustment mechanism is provided between a group of the slides and the support arms for adjusting the position of the slides on the support arms.

[0013] Preferably, the adjustment mechanism includes a screw, a slider, and a crank. The screw is rotatably connected to a group of the support arms, and the screw is arranged along the support arm. The slider is provided on the sliding seat opposite to the screw. The slider is threadedly connected to the screw, and the end of the screw is connected to the crank.

[0014] Preferably, a rib plate is provided between the positioning sleeve and the support arm, the rib plate is vertically arranged in the middle of the top surface of the support arm, and a hanging hole is provided on the rib plate.

[0015] Preferably, there are two groups of the lead screw and the slider and they are symmetrically arranged on both sides of the rib plate. An end plate is provided at the end of the support arm corresponding to the lead screw. One end of the lead screw is rotatably connected to the end plate. A driven gear is provided at the end of the lead screw. A transmission gear is rotatably connected to the end plate. The transmission gear is engaged with the two groups of driven gears, and the transmission gear is connected to the rocker.

[0016] Preferably, the positioning assembly is a positioning wheel, and each group of the slides is rotatably connected with two groups of the positioning wheels. The positioning wheels are symmetrically arranged on both sides of the rib plate, and the axes of the positioning wheels are vertically arranged.

[0017] Preferably, the ends of the arms are connected via a reinforcement ring.

[0018] In summary, the technical effects and advantages of the utility model are:

[0019] The utility model provides a rotatable turntable on the positioning sleeve, and uses a connecting rod to synchronously drive the slide on the support arm, thereby driving the impeller front disk to move and adjust, so that the impeller base plate and the impeller front disk achieve a concentric assembly effect. Manual adjustment is performed using a crank handle, and one group of slides is driven by a screw and a slider, thereby driving the other slides to move synchronously. The operation is simple, easy to use, and practical, which improves the convenience of assembly and enhances the accuracy of assembly concentricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1This is a schematic diagram of the overall structure of the concentric clamp of the utility model;

[0022] Figure 2 This is an enlarged structural diagram of point A of the present utility model;

[0023] Figure 3 This is a bottom view of the concentric clamp of the present invention;

[0024] Figure 4 This is a schematic diagram of the working state structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the utility model in a top view when in working state.

[0026] In the figure: 1. Impeller base plate; 2. Impeller front plate; 3. Positioning sleeve; 4. Core shaft; 5. Slide seat; 6. Connecting rod; 7. Turntable; 8. Screw; 9. Crank handle; 10. Blade; 30. Support arm; 31. Rib plate; 32. Reinforcement ring; 50. Positioning wheel; 51. Slider; 80. Driven gear; 90. Transmission gear. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example: Reference Figure 1-5 A fixture for controlling the concentricity of a fan impeller base plate and an impeller front disc is shown, comprising:

[0029] The positioning sleeve 3 has an annular array of support arms 30 on its outer wall. The support arms 30 are arranged along the radial direction of the positioning sleeve 3. The lower part of the positioning sleeve 3 is rotatably connected to a turntable 7.

[0030] The impeller includes an impeller base plate 1, blades 10 and an impeller front disk 2. The blades 10 are welded and installed on the impeller base plate 1, and the impeller front disk 2 is welded to the other end of the blades 10. A shaft sleeve is provided on the impeller base plate 1. The core shaft 4 is inserted into the shaft sleeve, and then the positioning sleeve 3 is sleeved on the other end of the core shaft 4 for concentricity positioning.

[0031] Slide 5, there are six groups of slides 5 and the slides 5 are all slidably connected along the support arm 30, and a positioning component is provided on the slide 5;

[0032] The turntable 7 is hinged with connecting rods 6. There are six groups of connecting rods 6 arranged in a circular array on the turntable 7. The end of each group of connecting rods 6 is hinged to a group of slides 5.

[0033] An adjustment mechanism is provided between a set of slides 5 and the support arm 30 .

[0034] As an implementation method in this embodiment, in order to facilitate the adjustment of the position of the slider 5 on the support arm 30 to adapt to the assembly needs of the impeller front disk 2 of different specifications, such as Figure 1 、 Figure 2 、 Figure 5 As shown, the adjustment mechanism includes a screw 8, a slider 51, and a crank 9. A set of support arms 30 are rotatably connected to the screw 8, and the screw 8 is arranged along the support arm 30. A slider 51 is provided on the slide 5 opposite to the screw 8. The slider 51 is threadedly connected to the screw 8, and the end of the screw 8 is connected to the crank 9.

[0035] As an implementation method in this embodiment, in order to enhance the structural strength of the support arm 30 and facilitate the lifting of the clamp, Figure 2 、 Figure 4 、 Figure 5 As shown, a rib plate 31 is provided between the positioning sleeve 3 and the support arm 30 . The rib plate 31 is vertically arranged in the middle of the top surface of the support arm 30 , and a hanging hole is provided on the rib plate 31 .

[0036] As an implementation method in this embodiment, in order to facilitate the adjustment and positioning of the slide 5, as shown in FIG. Figure 2 、 Figure 5 As shown, there are two groups of lead screws 8 and sliders 51 and they are symmetrically arranged on both sides of the rib plate 31. An end plate is provided at the end of the support arm 30 corresponding to the lead screw 8. One end of the lead screw 8 is rotatably connected to the end plate. A driven gear 80 is provided at the end of the lead screw 8. A transmission gear 90 is rotatably connected to the end plate. The transmission gear 90 is engaged with the two groups of driven gears 80, and a crank 9 is connected to the transmission gear 90.

[0037] As an implementation method in this embodiment, in order to facilitate the movement of the impeller front disk 2, as shown in FIG. Figure 2 、 Figure 3 、 Figure 5 As shown, the positioning assembly is a positioning wheel 50, and two groups of positioning wheels 50 are rotatably connected to each group of slides 5. The positioning wheels 50 are symmetrically arranged on both sides of the rib plate 31, and the axes of the positioning wheels 50 are vertically arranged.

[0038] As an implementation method in this embodiment, in order to maintain the stability of the support arm 30, as shown in FIG. Figures 1 to 5 As shown, the ends of the support arms 30 are connected by a reinforcement ring 32 .

[0039] The working principle of this utility model is as follows: after the blades 10 are welded and installed on the impeller base plate 1, the impeller front disc 2 is placed on the blades 10, and then the core shaft 4 is inserted into the shaft sleeve of the impeller base plate 1 through the impeller front disc 2, so that the core shaft 4 is perpendicular to the center of the circle of the impeller base plate 1, and then the positioning sleeve 3 is put on the core shaft 4 and pressed down, the positioning wheel 50 falls into the top opening of the impeller front disc 2, and the support arm 30 is pressed on the impeller front disc 2. Then, the transmission gear 90 is driven to rotate through the crank handle 9, and the transmission gear 90 drives the lead screw 8 to rotate through the driven gear 80, driving the slider 51 to move, driving the slide 5 to move along the support arm 30, and the slide 5 drives the turntable 7 to rotate through the connecting rod 6, and the turntable 7 drives other slides 5 along through other connecting rods 6. Each support arm 30 moves synchronously, and each slide 5 is at the same distance from the axis of the positioning sleeve 3. When the slide 5 moves, it drives the positioning wheel 50 to move, and the positioning wheel 50 contacts the inner edge of the top opening of the impeller front disk 2 and continues to move until each positioning wheel 50 contacts the inner edge of the top opening of the impeller front disk 2. At this time, the top opening of the impeller front disk 2 and the positioning sleeve 3 are coaxial, so that the impeller base plate 1 and the impeller front disk 2 are coaxial, and then the impeller front disk 2 and the blade 10 can be welded; the rib plate 31 and the reinforcement ring 32 can enhance the structure and stability of the support arm 30 and ensure accurate concentricity. After welding is completed, the positioning wheel 50 is moved to disengage from the impeller front disk 2, and the positioning sleeve 3 and the core shaft 4 are removed respectively.

[0040] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0041] Components not described in detail herein are prior art.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concentricity control fixture for a fan impeller base plate and an impeller front disc, characterized in that: include: A positioning sleeve (3), wherein an annular array of support arms (30) is provided on the outer wall of the positioning sleeve (3), the support arms (30) are arranged along the radial direction of the positioning sleeve (3), and a turntable (7) is rotatably connected to the lower portion of the positioning sleeve (3); Slides (5), the slides (5) are provided in multiple groups and the slides (5) are all slidably connected along the support arms (30), and positioning components are provided on the slides (5); The turntable (7) is hinged with connecting rods (6), and the connecting rods (6) are provided in a plurality of groups and arranged in a circular array on the turntable (7), and the ends of each group of connecting rods (6) are hinged with a group of slide seats (5); An adjustment mechanism is provided between one set of the slide seats (5) and the support arms (30).

2. The concentricity control fixture for the fan impeller base plate and the impeller front disc according to claim 1, characterized in that: The adjusting mechanism comprises a lead screw (8), a slider (51), and a crank (9); a group of the support arms (30) are rotatably connected to the lead screw (8); the lead screw (8) is arranged along the support arm (30); the slider (51) is provided on the slide seat (5) opposite to the lead screw (8); the slider (51) is threadedly connected to the lead screw (8); and the end of the lead screw (8) is connected to the crank (9).

3. The concentricity control fixture for the fan impeller base plate and the impeller front disc according to claim 2, characterized in that: A rib plate (31) is provided between the positioning sleeve (3) and the support arm (30), the rib plate (31) being vertically arranged at the middle of the top surface of the support arm (30), and a hanging hole being provided on the rib plate (31).

4. The concentricity control fixture for the fan impeller base plate and the impeller front disc according to claim 3, characterized in that: There are two groups of the lead screw (8) and the slider (51) and they are symmetrically arranged on both sides of the rib plate (31). An end plate is provided at the end of the support arm (30) opposite to the lead screw (8). One end of the lead screw (8) is rotatably connected to the end plate. A driven gear (80) is provided at the end of each lead screw (8). A transmission gear (90) is rotatably connected to the end plate. The transmission gear (90) is meshed with the two groups of driven gears (80). The transmission gear (90) is connected to the crank (9).

5. The concentricity control fixture for the fan impeller base plate and the impeller front disc according to claim 3, characterized in that: The positioning assembly is a positioning wheel (50), and each group of the slide seats (5) is rotatably connected to two groups of the positioning wheels (50). The positioning wheels (50) are symmetrically arranged on both sides of the rib plate (31), and the axes of the positioning wheels (50) are arranged vertically.

6. The concentricity control fixture for the fan impeller base plate and the impeller front disc according to claim 1, characterized in that: The ends of the support arms (30) are connected via a reinforcement ring (32).

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