CN219053306U

CN219053306U - Impeller welding tool

Info

Publication number: CN219053306U
Application number: CN202223005447.7U
Authority: CN
Inventors: 孙伟东; 孙儒斋; 段艳龙; 王敏
Original assignee: Xi'an Reshipment Hancheng Coal Mine Machinery Co ltd
Current assignee: Xi'an Reshipment Hancheng Coal Mine Machinery Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-05-23
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses an impeller welding tool, which comprises a base, wherein a hub positioning part and a blade positioning part are arranged on the base at intervals; the hub positioning part comprises a fixed shaft fixedly connected with the base, a shaft sleeve is sleeved outside the fixed shaft, and the shaft sleeve is used for being fixedly connected with the hub; the fixed shaft is also provided with a first dial which is annular, and the inner ring of the first dial is fixedly connected with the periphery of the fixed shaft; the shaft sleeve is also fixedly connected with a fixed block, a first pointer is arranged on the fixed block, and the first pointer points to scales on the first scale disc; according to the utility model, the first dial is arranged on the hub positioning part, and the corresponding first pointer is arranged on the shaft sleeve fixedly connected with the hub, so that the rotation angle of the hub can be accurately adjusted; meanwhile, the accurate measurement of the rotation angle of the blade can be realized through the second dial and the second pointer; furthermore, the hub and the blade can be accurately positioned simultaneously when being welded, and the welding precision can be greatly increased.

Description

Impeller welding tool

Technical Field

The utility model belongs to the technical field of impeller machining tools, and particularly relates to an impeller welding tool.

Background

An impeller is a bladed wheel that can generate power or move a fluid. For example, for a mine disrotatory local axial flow fan, which is a common ventilation device for mines, the performance quality is directly dependent on the quality of the fan impeller inside the fan.

The impeller consists of blades and a hub, and two processing methods of the impeller are generally adopted. One is integral processing method, uses the integral casting to process blade and wheel hub once only, can solve the poor location problem of a plurality of blade uniformity, but cast mould manufacturing difficulty cost is higher, and single blade damages then impeller scrapps, and the maintenance cost is higher. The other is a split processing method, wherein a hub and blades are respectively processed, and the blades are welded on the impeller.

For split type processing method, there is a plurality of blade welding assembly time positioning difference location difficulty's problem mostly, if the blade location is inaccurate, directly influences the efficiency and the ventilation volume of fan after the welding.

Disclosure of Invention

The utility model aims to provide an impeller welding tool for improving the positioning accuracy of blades and hubs during split processing of impellers.

The utility model adopts the following technical scheme: the impeller welding tool comprises a base, wherein a hub positioning part and a blade positioning part are arranged on the base at intervals;

the hub positioning part comprises a fixed shaft fixedly connected with the base, a shaft sleeve is sleeved outside the fixed shaft, and the shaft sleeve is used for being fixedly connected with the hub;

the fixed shaft is also provided with a first dial which is annular, and the inner ring of the first dial is fixedly connected with the periphery of the fixed shaft;

the shaft sleeve is also fixedly connected with a fixed block, a first pointer is arranged on the fixed block, and the first pointer points to scales on the first scale disc.

Further, a key groove is formed in the periphery of the shaft sleeve, a fixed key is arranged at the lower portion of the fixed block and is used for being matched with the key groove to achieve fixation between the shaft sleeve and the hub.

Further, a base station is sleeved on the fixed shaft, and the base station is annular;

the inner diameter of the base station is smaller than the outer diameter of the shaft sleeve;

the base station is positioned below the shaft sleeve.

Further, a fixed threaded hole is formed in the upper portion of the fixed shaft;

the hub positioning portion further comprises a fixing bolt, and the fixing bolt is used for being installed in the fixing threaded hole to fix the first dial.

Further, the blade positioning part comprises a sliding block which is in sliding connection with the base, a fixed cylinder is arranged on the sliding block, a screw rod is arranged on the fixed cylinder in a penetrating way, and a clamp for clamping the blade is arranged at the front end of the screw rod;

the fixed cylinder is fixedly provided with a second dial which is annular and is coaxially arranged with the screw rod, the screw rod is provided with a second pointer, and the second pointer points to scales on the second dial.

Further, a positioning column is fixedly arranged on the sliding block, the positioning column is cylindrical, and a limiting rod is further arranged on the side face of the positioning column;

the fixed cylinder is a hollow cylinder body, the upper end is closed, the lower end is open, and a limit groove which is adaptive to the limit rod is formed in the inner side wall of the lower part of the fixed cylinder.

Further, a heightening block is arranged between the sliding block and the fixed cylinder.

Further, the clamp comprises a fixed clamping plate and a movable clamping plate which are oppositely arranged;

a plurality of fine tuning bolts are arranged on the fixed clamping plate and the movable clamping plate;

the front end of each fine tuning bolt is positioned on the clamping surface of the fixed clamping plate or the movable clamping plate, and the rubber head nut is arranged at the front end of each fine tuning bolt.

Further, a connecting bolt is further arranged on the movable clamping plate, the front end of the connecting bolt is positioned on the clamping surface of the movable clamping plate, and a rubber head nut is arranged at the front end of the connecting bolt.

Further, the fixed clamping plate and the movable clamping plate are both connected to the same supporting piece, the fixed clamping plate is fixedly connected with one end of the supporting piece, and the movable clamping plate is connected with the other end of the supporting piece;

the other end of the supporting piece is hinged with a handle, the middle part of the handle is also hinged with a connecting rod, and the other end of the connecting rod is hinged with the rear end of the connecting bolt.

The beneficial effects of the utility model are as follows: according to the utility model, the first dial is arranged on the hub positioning part, and the corresponding first pointer is arranged on the shaft sleeve fixedly connected with the hub, so that the rotation angle of the hub can be accurately adjusted; meanwhile, the accurate measurement of the rotation angle of the blade can be realized through the second dial and the second pointer; furthermore, the hub and the blade can be accurately positioned simultaneously when being welded, and the welding precision can be greatly increased.

Drawings

FIG. 1 is a schematic structural diagram of an impeller welding tool according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a hub positioning portion according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a hub positioning portion (without a sleeve) according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a blade positioning portion according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a blade positioning portion according to another embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a slider, a spacer block and a stationary cylinder according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a slider and a lift block according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a slider according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a structure of a fixing barrel according to an embodiment of the present utility model;

fig. 10 is a schematic view illustrating a use state of an impeller welding tool according to an embodiment of the present utility model.

Wherein: 10. a hub positioning portion;

11. a base station; 12. a shaft sleeve; 13. a fixed block; 14. a first dial; 15. a fixing bolt; 16. a fixed shaft; 16A, internal threads;

20. a blade positioning part;

21. a slide block; 21A, positioning columns; 21B, a limiting rod; 22. a lifting block; 23. a fixed cylinder; 23A, a threaded hole; 24. a screw rod; 25. a second dial; 26. a second pointer; 27. a clamp; 27A, fixing a clamping plate; 27B, a movable clamping plate; 27C, fine tuning a bolt; 27D, pulling the handle; 27E, connecting rod; 27F, limiting plates;

30. a base;

40. a hub;

50. and (3) a blade.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

The utility model discloses an impeller welding tool, which is shown in fig. 1, and comprises a base 30, wherein a hub positioning part 10 and a blade positioning part 20 are arranged on the base 30 at intervals; the hub positioning part 10 comprises a fixed shaft 16 fixedly connected with a base 30, a shaft sleeve 12 is sleeved outside the fixed shaft 16, and the shaft sleeve 12 is used for being fixedly connected with a hub 40; the fixed shaft 16 is also provided with a first dial 14, the first dial 14 is annular, and the inner ring of the first dial 14 is fixedly connected with the periphery of the fixed shaft 16; the shaft sleeve 12 is also fixedly connected with a fixed block 13, the fixed block 13 is provided with a first pointer, and the first pointer points to the scale on the first scale 14; the blade positioning portion 20 is provided with a second dial 25 and a second pointer 26 for measuring the rotation angle of the blade.

According to the utility model, the first dial 14 is arranged on the hub positioning part, and the corresponding first pointer is arranged on the shaft sleeve 12 fixedly connected with the hub 40, so that the rotation angle of the hub 40 can be accurately adjusted; meanwhile, the second dial 25 and the second pointer 26 can also realize the accurate measurement of the rotation angle of the blade 50; furthermore, the hub 40 and the blade 50 can be positioned simultaneously and precisely when the hub 40 and the blade 50 are welded, and the welding accuracy can be greatly increased.

In this embodiment, the base 30 may be designed in any shape, but it is required to have a certain weight, and preferably, the upper surface of the base 30 is designed to be planar and is designed to be a cake shape as a whole, so that the whole tool balance can be maintained by the base 30.

Specifically, the upper surface of the base 30 is kept horizontal, and the fixing shaft 16 is vertically disposed on the upper surface thereof, so that the hub 40 is kept horizontally after the hub 40 is placed, and the convenience in welding the blades 50 and the hub 40 is improved. In addition, in this embodiment, the fixed shaft 16 is matched with the shaft sleeve 12, instead of using a conventional bearing, etc., so as to avoid the rotation of the well-positioned hub 40 when the well-positioned hub is touched, thereby improving the positioning accuracy of the hub. With both the fixed shaft 16 and the sleeve 12, the friction against the bearings is greater, avoiding the above-mentioned accidents.

In this embodiment, as shown in FIG. 2, the first dial 14 is preferably a disk that is fixed to the upper surface of the fixed shaft 16. Meanwhile, the position of the first pointer can be adjusted through the fixed block 13, and the first pointer on the fixed block 13 is adjusted to be on the same plane with the first dial 14, so that the accuracy of measurement can be improved when the hub 40 rotates relative to the fixed shaft 16.

In one embodiment, a key slot is provided on the outer periphery of the sleeve 12, and a fixing key is provided on the lower portion of the fixing block 13, wherein the fixing key is used for matching with the key slot to realize the fixation between the sleeve 12 and the hub 40. The degree of connection firmness between the shaft sleeve 12 and the wheel roller 40 can be improved through the matching of the key groove and the fixed key, and the synchronism of the first pointer and the wheel hub 40 is improved while the connection firmness of the shaft sleeve 12 and the wheel roller 40 is ensured due to the fact that the first pointer is arranged on the upper portion of the fixed block 13, so that the wheel hub rotation measurement accuracy is improved.

In addition, a base 11 is sleeved on the fixed shaft 16, and the base 11 is annular; the inner diameter of the base 11 is smaller than the outer diameter of the sleeve 12; the abutment 11 is located below the sleeve 12. Through setting up of base 11, on the one hand can be according to the requirement of impeller size to adjust the height of wheel hub (namely change the base 11 of equidimension according to the impeller of equidimension not), on the other hand because it is located axle sleeve 12 below, when being connected with wheel hub 40 at axle sleeve 12, the lower extreme of wheel hub 40 also can contact with the upper surface of base 11, and then can produce frictional force with the upper surface of base 11 at wheel hub 40 pivoted in-process, this frictional force combines the frictional force of fixed axle 16 and axle sleeve 12, can solve the aforesaid wheel hub 40 and take place to rotate when receiving and lead to the poor problem of positioning accuracy.

As a specific implementation form, as shown in fig. 3, a fixing threaded hole is formed in the upper portion of the fixing shaft 16, that is, an internal thread 16A is formed in the upper portion of the fixing shaft 16; the hub positioning portion 10 further includes a fixing bolt 15, and the fixing bolt 15 is configured to be installed into the fixing threaded hole to fix the first dial 14. The first dial 14 is pressed on the top of the fixed shaft 16 through the fixing bolt 15, so that the first dial 14 is fixed, and when the first dial 14 needs to be replaced or adjusted, the fixing bolt 15 is directly screwed, so that the operation is more convenient.

In one embodiment, as shown in fig. 4 and 5, the blade positioning portion 20 includes a slider 21 slidably coupled to a base 30. Specifically, a sliding strip may be disposed at the bottom of the sliding block 21, a sliding groove is disposed on the base 30, and the sliding connection of the sliding strip and the sliding groove is realized through cooperation of the sliding groove and the sliding strip. Of course, a slide groove may be provided on the slider 21, and a slide bar may be provided on the base 30.

The slider 21 is provided with a fixed cylinder 23, a screw 24 is inserted through the fixed cylinder 23, and a clamp 27 for clamping the blade 50 is mounted at the front end of the screw 24; the fixed cylinder 23 is fixedly provided with a second dial 25, the second dial 25 is annular and is coaxially arranged with a screw 24, the screw 24 is provided with a second pointer 26, and the second pointer 26 points to the scale on the second dial 25.

Specifically, the fixed cylinder 23 is preferably cylindrical, and its main purpose is to provide an installation position for the screw 24. The diameter of one cross section of the fixed cylinder 23 is taken as an axis, two threaded holes 23A are formed in the wall surface of the fixed cylinder 23, the screw 24 passes through the two threaded holes 23A, the screw 24 can be fixed, and the screw 24 can be more stable by designing the two threaded holes 23A. Specifically, the second dial 25 is also selected as a disc, the center of which is located on the axis of the screw 24, and is matched with the second pointer 26, and when the screw 24 rotates, the rotation angle of the screw 24 can be measured, so that the rotation angle of the blade 50 can be known.

Regarding the first pointer and the second pointer 26, both may be in various forms, and in this embodiment, an annular shape corresponding to the dial is designed, and at the same time, marks are made on the annular shape, and the marks are made as specific pointer forms, so that the problem that the conventional pointer is easily deformed can be avoided.

In one embodiment, as shown in fig. 6 and 8, a positioning column 21A is fixedly arranged on the slider 21, the positioning column 21A is cylindrical, and a limiting rod 21B is further arranged on the side surface of the positioning column 21A. As shown in fig. 9, the fixed cylinder 23 is a hollow cylinder, the upper end is closed, the lower end is open, and a limit groove corresponding to the limit rod 21B is formed in the inner side wall of the lower part of the fixed cylinder 23. Through the cooperation of the positioning column 21A and the limiting rod 21B, the fixed cylinder 23 can be prevented from rotating relative to the sliding block 21, and then the position of the blade 50 is prevented from being displaced, and the positioning accuracy of the blade is further improved.

In addition, as shown in fig. 7, a lifting block 22 is further disposed between the slider 21 and the fixed cylinder 23, and the lifting block 22 has a similar function on the base 11, so that on one hand, height adjustment of the blade 50 is provided (that is, the lifting block 22 with different sizes is replaced according to different requirements), and on the other hand, gravity of the blade positioning portion 20 can be increased, so that friction force between the slider 21 and the base 30 is increased, displacement of the two when force reaches a certain degree is ensured, and displacement of the blade when the blade is in false touch is avoided.

As a specific implementation manner, the clamp 27 includes a fixed clamping plate 27A and a movable clamping plate 27B which are oppositely arranged, and the structures of the two can be specifically designed according to actual needs. In addition, a plurality of fine tuning bolts 27C are arranged on the fixed clamping plate 27A and the movable clamping plate 27B; the front end of each fine tuning bolt 27C is located on the clamping surface of the fixed clamping plate 27A or the movable clamping plate 27B, and a rubber head nut is mounted at the front end of each fine tuning bolt 27C.

In the present embodiment, the fine adjustment bolt 27C is screwed to the fixed clamp plate 27A or the movable clamp plate 27B. After the blade 50 is clamped by the movable clamping plate 27B and the fixed clamping plate 27A, the tightening force between the rubber head nut at the front end of the blade and the surface of the blade can be improved by screwing the fine adjusting bolt 27C, and the blade can be prevented from being damaged due to too large force due to certain elasticity of the rubber head nut. Moreover, the fixing clamp plate 27A and the movable clamp plate 27B are respectively provided with a trimming bolt 27C, so that the blade 50 can be clamped simultaneously from two surfaces, and the clamping area of the trimming bolts 27C can be increased, so that the blade can be clamped more stably.

In addition, a connecting bolt is further provided on the movable clamping plate 27B, the front end of the connecting bolt is located on the clamping surface of the movable clamping plate 27B, and a rubber head nut is mounted at the front end of the connecting bolt. The fixed clamping plate 27A and the movable clamping plate 27B are connected to the same supporting piece, the fixed clamping plate 27A is fixedly connected with one end of the supporting piece, and the movable clamping plate 27B is connected with the other end of the supporting piece; the other end of the supporting piece is hinged with a handle 27D, the middle part of the handle 27D is also hinged with a connecting rod 27E, and the other end of the connecting rod 27E is hinged with the rear end of the connecting bolt.

Through the above-mentioned articulation of the pull handle 27D, the link rod 27E and the support, when the pull handle 27D is pulled, the direct movement is converted into a rotational connection, so that when the pull amplitude of the pull handle 27D is large, the movement distance of the connecting bolt is controlled within a certain range. Meanwhile, the limiting plate 27F is further arranged on the supporting piece, so that the connecting bolt penetrates through the through hole in the limiting plate 27F, and the through hole can prevent the connecting bolt from axially shifting when being pulled.

In summary, as shown in fig. 10, the impeller welding tool of the present utility model can precisely control the positions of the hub 40 and the blades 50 for welding during the split machining method. In actual production, the tool realizes related functions by a simple mechanical structure, and is convenient to maintain structurally; the universality of the tool is considered, namely, replaceable parts (such as the base 11 and the heightening block 22) are designed to control the center height of the welding impeller, so that the applicability is strong; the blade is fixed by using a fine-tuning bolt group with a rubber head nut, so that the pain point that the curved surface of the blade is clamped compactly is solved; the dial and the corresponding pointer are added, so that the welding angle can be more adhered to the required welding angle, the machining and welding precision is greatly improved, and the machining efficiency is improved.

Claims

1. The impeller welding tool is characterized by comprising a base (30), wherein a hub positioning part (10) and a blade positioning part (20) are arranged on the base (30) at intervals;

the hub positioning part (10) comprises a fixed shaft (16) fixedly connected with the base (30), a shaft sleeve (12) is sleeved outside the fixed shaft (16), and the shaft sleeve (12) is used for being fixedly connected with a hub (40);

the fixed shaft (16) is also provided with a first dial (14), the first dial (14) is annular, and the inner ring of the first dial is fixedly connected with the periphery of the fixed shaft (16);

the shaft sleeve (12) is also fixedly connected with a fixed block (13), a first pointer is arranged on the fixed block (13), and the first pointer points to scales on the first scale (14);

the blade positioning part (20) is provided with a second dial (25) and a second pointer (26) for measuring the rotation angle of the blade.

2. An impeller welding fixture as claimed in claim 1, wherein the sleeve (12) is provided with a key slot on its periphery, and the lower part of the fixing block (13) is provided with a fixing key for cooperating with the key slot to fix the sleeve (12) and the hub (40).

3. The impeller welding fixture according to claim 2, wherein a base (11) is further sleeved on the fixed shaft (16), and the base (11) is annular;

the inner diameter of the base (11) is smaller than the outer diameter of the shaft sleeve (12);

the base (11) is located below the shaft sleeve (12).

4. An impeller welding fixture according to claim 3, wherein the upper part of the fixed shaft (16) is provided with a fixed threaded hole;

the hub positioning portion (10) further comprises a fixing bolt (15), and the fixing bolt (15) is used for being installed into the fixing threaded hole to fix the first dial (14).

5. An impeller welding fixture according to any one of claims 2-4, wherein the blade positioning part (20) comprises a sliding block (21) which is in sliding connection with the base (30), a fixed cylinder (23) is arranged on the sliding block (21), a screw rod (24) is arranged on the fixed cylinder (23) in a penetrating way, and a clamp (27) for clamping the blade (50) is arranged at the front end of the screw rod (24);

the fixed cylinder (23) is fixedly provided with a second dial (25), the second dial (25) is annular and is coaxially arranged with the screw rod (24), the screw rod (24) is provided with a second pointer (26), and the second pointer (26) points to the scale on the second dial (25).

6. The impeller welding fixture according to claim 5, wherein a positioning column (21A) is fixedly arranged on the sliding block (21), the positioning column (21A) is cylindrical, and a limit rod (21B) is further arranged on the side surface of the positioning column (21A);

the fixed cylinder (23) is a hollow cylinder body, the upper end is closed, the lower end is open, and a limit groove which is adaptive to the limit rod (21B) is formed in the inner side wall of the lower part of the fixed cylinder (23).

7. The impeller welding fixture according to claim 6, wherein a lifting block (22) is further arranged between the sliding block (21) and the fixed cylinder (23).

8. An impeller welding fixture as claimed in claim 6 or 7, wherein said clamp (27) comprises a fixed clamp plate (27A) and a movable clamp plate (27B) arranged opposite each other;

a plurality of fine tuning bolts (27C) are arranged on the fixed clamping plate (27A) and the movable clamping plate (27B);

the front end of each fine tuning bolt (27C) is located on the clamping surface of the fixed clamping plate (27A) or the movable clamping plate (27B), and a rubber head nut is arranged at the front end of each fine tuning bolt (27C).

9. An impeller welding fixture as claimed in claim 8, wherein the movable clamping plate (27B) is further provided with a connecting bolt, the front end of the connecting bolt is located on the clamping surface of the movable clamping plate (27B), and the front end of the connecting bolt is provided with a rubber head nut.

10. The impeller welding fixture according to claim 9, wherein the fixed clamping plate (27A) and the movable clamping plate (27B) are both connected to the same supporting member, the fixed clamping plate (27A) is fixedly connected to one end of the supporting member, and the movable clamping plate (27B) is connected to the other end of the supporting member;

the other end of the supporting piece is hinged with a handle (27D), the middle part of the handle (27D) is also hinged with a connecting rod (27E), and the other end of the connecting rod (27E) is hinged with the rear end of the connecting bolt.