Counterweight device for balance test of compressor wind wheel

Abstract

The utility model discloses a counterweight device for compressor wind wheel balance test, which relates to the technical field of balance test, and comprises channel steel, a clamping mechanism and a counterweight adjusting mechanism, the channel steel comprises a channel steel top plate, a channel steel back plate and a channel steel bottom plate, the clamping mechanism is arranged on the channel steel top plate and can be matched with the channel steel bottom plate to be clamped on a wind wheel, and the counterweight adjusting mechanism is arranged on the channel steel back plate. The counterweight adjusting mechanism is arranged on the channel steel back plate and can perform counterweight adjustment; according to the utility model, the edge of the wind wheel can be firmly clamped through the clamping mechanism, the contact area with the wind wheel is large, the stress is uniform, the stability and the safety of the test process are greatly improved, the counterweight adjusting plate in the counterweight adjusting mechanism is used as a counterweight for coarse adjustment, and the precise counterweight nut is used as a counterweight for fine adjustment, so that the counterweight mass is quickly and precisely changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to balance test technical field, concretely is a kind of counterweight device for compressor wind wheel balance test. BACKGROUND

[0002] The balance performance of compressor wind wheel system directly influences its running stability, noise level and service life. Compressor wind wheel system mainly includes wind wheel and serpentine crankshaft, wherein, there is an inner counterweight iron on serpentine crankshaft, and its counterweight angle is always with wind wheel, thereby forming a system of relative balance of rotary inertia force. Therefore, in the manufacturing process of wind wheel, it needs to be balanced and tested and cooperated with drilling weight reduction mode to manufacture a wind wheel with specific direction and specific counterweight gram. Specifically, first, an adjustable counterweight device (as test counterweight) is installed on the edge of wind wheel;Then, start the balancing machine test, measure the key position and the gram of key weight reduction needed;Then, remove the corresponding mass of material by drilling mode to offset the initial imbalance;Finally, the counterweight device can be removed or adjusted, and the final check is completed.

[0003] At present, the commonly used counterweight fixing mode mostly adopts simple screw extrusion or direct clamping structure, and this mode has some defects. First, the contact area of screw extrusion mode with wind wheel is small, and under high-speed rotation test, it is easy to cause counterweight loosening or displacement due to centrifugal force, and the fixing stability is poor, which affects the test accuracy;Second, the screw head directly acts on the surface of wind wheel, and the pressure is concentrated, which is easy to cause wind wheel surface to be pressed, deformed or scratched, and causes irreversible damage to precision parts;In addition, the existing counterweight device can only adjust the counterweight by replacing counterweight blocks of different mass, and the operation is cumbersome, the adjustment precision is limited, fine adjustment of unbalance amount is difficult to realize, and the balance correction efficiency and final effect are affected.

[0004] Therefore, a special device capable of stable clamping, effectively protecting wind wheel and realizing accurate and convenient adjustment of counterweight is urgently needed to improve the accuracy, safety and operation convenience of compressor wind wheel balance test. UTILITY MODEL CONTENTS

[0005] In view of the above shortcomings of prior art, the utility model provides a kind of counterweight device for compressor wind wheel balance test, and the contact area of wind wheel edge clamped by clamping mechanism is large and stress is uniform, which greatly improves the stability and safety of test process, and counterweight adjusting plate in counterweight adjusting mechanism is used as coarse adjustment counterweight, and accurate counterweight nut is used as fine adjustment counterweight, so as to quickly and accurately change the mass of counterweight.

[0006] To achieve the above object, the utility model discloses a counterweight device for compressor wind wheel balance test through the following technical scheme: a channel steel, clamping mechanism and counterweight adjusting mechanism, the channel steel includes channel steel top plate, channel steel backplate and channel steel bottom plate, the clamping mechanism sets up on the channel steel top plate, can cooperate the channel steel bottom plate clamping on the wind wheel, the counterweight adjusting mechanism sets up on the channel steel backplate, can carry out counterweight adjustment.

[0007] The clamping mechanism includes a clamping plate, a threaded column and a plurality of first limiting rods, the clamping plate is horizontally arranged between the channel steel top plate and the channel steel bottom plate, the plurality of first limiting rods are evenly distributed on the upper surface of the clamping plate, the channel steel top plate is provided with a first limiting hole corresponding to the position of the first limiting rod, and the first limiting rod is vertically movably penetrated into the first limiting hole, the lower end of the threaded column is rotatably connected with the center position of the upper surface of the clamping plate, the channel steel top plate is provided with a threaded hole corresponding to the position of the threaded column, and the threaded column is screwed into the threaded hole, and the upper end of the threaded column is provided with a handle.

[0008] The counterweight adjusting mechanism includes a fixed threaded column, a counterweight adjusting plate and a precision counterweight nut, the fixed threaded column is fixedly arranged at the center position of the outer side wall of the channel steel backplate, the counterweight adjusting plate is provided with a through hole at the center position and is sleeved on the fixed threaded column through the through hole, and the precision counterweight nut is screwed on the fixed threaded column and tightly presses the counterweight adjusting plate, and the counterweight adjusting plate and the precision counterweight nut are pre-set with a plurality of weights.

[0009] Preferably, the outer side wall of the channel steel backplate is provided with a pair of second limiting rods, and the counterweight adjusting plate is provided with a second limiting hole and is sleeved on the second limiting rod through the second limiting hole.

[0010] Preferably, the lower bottom surface of the clamping plate and the upper surface of the channel steel bottom plate are provided with clamping columns, and the clamping columns are located away from the channel steel backplate.

[0011] Preferably, the clamping column is provided with a rubber sleeve.

[0012] Preferably, the lower bottom surface of the clamping plate and the upper surface of the channel steel bottom plate are provided with rubber gaskets.

[0013] The utility model provides a kind of counterweight device for compressor wind wheel balance test, with following beneficial effects:

[0014] 1. The utility model discloses a clamping mechanism which is composed of a clamping plate, a screwing threaded column, a handle and a first limiting rod, and can firmly clamp the edge of the wind wheel. The clamping mechanism has a large clamping contact area and uniform stress, effectively overcoming the drawbacks of small contact area and concentrated pressure of the traditional screw extrusion mode. Even under the working condition of high-speed rotation generating large centrifugal force, the utility model can ensure that there is no relative displacement between the counterweight device and the wind wheel, greatly improving the stability and safety of the testing process, and has good adaptability and can be compatible with wind wheels of different thicknesses or slightly different sizes.

[0015] 2. The utility model discloses a counterweight adjusting mechanism which is composed of a fixed threaded column, a counterweight adjusting plate, a precision adjusting nut and a second limiting rod, and realizes fine adjustment of the counterweight. The counterweight adjusting plate is a coarse counterweight, and the precision counterweight nut is a fine counterweight. According to the requirements, the counterweight adjusting plate and the precision counterweight nut of corresponding weight are selected, so that the counterweight mass is quickly and accurately changed. This method replaces the traditional method of replacing counterweight blocks of different masses, and the adjustment process is fast, accurate and intuitive, which significantly improves the accuracy and efficiency of the counterweight adjustment and is more conducive to realizing high-precision balance correction.

[0016] 3. The utility model discloses a rubber gasket arranged on the contact surface of the clamping plate and the wind wheel, and a rubber sleeve arranged on the clamping column. These flexible buffer components avoid direct hard contact of the metal components with the surface of the wind wheel, effectively preventing physical damage such as indentation and scratch of the wind wheel during clamping or testing, and protecting the integrity and precision of the wind wheel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of the counterweight device for compressor wind wheel balance testing.

[0018] Figure 2 It is a left view of the counterweight device for compressor wind wheel balance testing.

[0019] Figure 3 It is a top view of the counterweight device for compressor wind wheel balance testing.

[0020] Figure 4 It is a schematic view of the clamping plate.

[0021] In the figure: 1, channel steel back plate; 2, channel steel bottom plate; 3, channel steel top plate; 4, clamping plate; 5, screwing threaded column; 6, handle; 7, first limiting rod; 8, fixed threaded column; 9, counterweight adjusting plate; 10, precision counterweight nut; 11, second limiting rod; 12, clamping column; 13, rubber gasket; 14, second limiting hole; 15, first limiting hole; 16, rubber sleeve. DETAILED DESCRIPTION

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4 As shown, a counterweight device for balancing a compressor impeller includes a channel steel, a clamping mechanism, and a counterweight adjustment mechanism. The channel steel includes a top plate 3, a back plate 1, and a bottom plate 2. The clamping mechanism is mounted on the top plate 3 and can be used to clamp the impeller in conjunction with the bottom plate 2. The counterweight adjustment mechanism is mounted on the back plate 1 and can adjust the counterweight. The clamping mechanism includes a clamping plate 4, a threaded post 5, and multiple first limiting rods 7. The clamping plate 4 is horizontally positioned between the top plate 3 and the bottom plate 2. The multiple first limiting rods 7 are evenly distributed on the upper surface of the clamping plate 4. The top plate 3 has a first limiting hole 15 corresponding to the position of the first limiting rod 7, and the first limiting rod 7 moves vertically through the first limiting hole 15. The lower end of the threaded post 5 is rotatably connected to the center position of the upper surface of the clamping plate 4. The top plate 3 has a threaded hole corresponding to the position of the threaded post 5, and the threaded post 5 is screwed into the threaded hole. A handle 6 is provided at the upper end of the threaded column 5; the counterweight adjustment mechanism includes a fixed threaded column 8, a counterweight adjustment plate 9, and a precision counterweight nut 10. The fixed threaded column 8 is fixedly installed at the center of the outer side wall of the channel steel back plate 1. The counterweight adjustment plate 9 has a through hole at its center and is sleeved on the fixed threaded column 8 through the through hole. The precision counterweight nut 10 is screwed onto the fixed threaded column 8 and tightens the counterweight adjustment plate 9. The counterweight adjustment plate 9 and the precision counterweight nut 10 are pre-set with multiple... Weight; a pair of second limiting rods 11 are provided on the outer wall of the channel steel back plate 1, and a second limiting hole 14 is provided on the counterweight adjustment plate 9, which is sleeved on the second limiting rod 11 through the second limiting hole 14; a locking post 12 is provided on the lower bottom surface of the clamping plate 4 and the upper surface of the channel steel bottom plate 2, and the locking post 12 is located on the side away from the channel steel back plate 1; a rubber sleeve 16 is provided on the locking post 12; a rubber gasket 13 is provided on the lower bottom surface of the clamping plate 4 and the upper surface of the channel steel bottom plate 2.

[0024] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows:

[0025] This utility model is an essential piece of equipment for compressor impeller balancing tests. It can be used in conjunction with existing balancing testing machines, such as CN119354409A and CN117600505A, which are fully automatic balancing testing and drilling weight removal equipment.

[0026] According to the description attached Figures 1-4 It can be known that, when the utility model is used, the rotating handle 6 in the rotating clamping mechanism drives the rotating threaded column 5 to rotate, because the plurality of first limiting rods 7 limit the clamping plate 4 and the lower end of the rotating threaded column 5 is rotationally connected with the clamping plate 4, at the same time, the rotating threaded column 5 is screwed with the threaded hole of the channel steel top plate 3, therefore, the rotating threaded column 5 can drive the clamping plate 4 to move up and down, first, let the clamping plate 4 move upwards, open to greater than the thickness of the wind wheel. In this process, the number of the first limiting rods 7 is preferably three, and is arranged in a triangular shape, to ensure the stability of the vertical movement of the clamping plate 4; in addition, the threaded hole of the channel steel top plate 3 can use a special threaded sleeve to increase the matching strength with the rotating threaded column 5. After the clamping plate 4 is opened, the clamping plate 4 and the channel steel bottom plate 2 are sleeved on the edge of the wind wheel, and the rotating handle 6 is reversely rotated to drive the rotating threaded column 5 to rotate, so that the clamping plate 4 moves downwards to cooperate with the channel steel bottom plate 2 to clamp the wind wheel, and is installed on the wind wheel, the clamping contact area of the clamping mechanism is large, the stress is uniform, the drawbacks of small contact area and concentrated pressure of the traditional screw extrusion top method are effectively overcome, even under the working condition of large centrifugal force generated by high-speed rotation, the relative displacement between the counterweight device and the wind wheel can also be ensured, the stability and safety of the test process are greatly improved, and good adaptability is obtained, different thicknesses or slightly different sizes of the wind wheel can be compatible. To adjust the counterweight, it is necessary to know that the channel steel and the clamping mechanism itself is a counterweight, the weight is known and fixed, that is, the channel steel, the clamping mechanism and the counterweight adjusting mechanism together are a complete counterweight, and the counterweight adjusting mechanism mainly plays a regulating role. Specifically, according to the needs, select appropriate counterweight adjusting plate 9 and precise counterweight nut 10, the weight difference between different counterweight adjusting plates 9 is 10 grams, and the weight difference between different precise counterweight nuts 10 is 1 gram, the counterweight adjusting plate 9 is sleeved on the fixed threaded column 8 through the through hole, and is fixed by the selected precise counterweight nut 10, finally, the weight of the channel steel, the clamping mechanism, the fixed threaded column 8, the counterweight adjusting plate 9 and the precise counterweight nut 10 is the total counterweight. The counterweight adjusting plate 9 in the counterweight adjusting mechanism is a coarse counterweight, and the precise counterweight nut 10 is a fine counterweight, according to the needs, the counterweight adjusting plate 9 and the precise counterweight nut 10 of corresponding weight are selected, so that the counterweight mass is quickly and accurately changed. This method replaces the traditional method of replacing counterweight blocks of different masses, the adjustment process is fast, accurate and intuitive, the accuracy and efficiency of the counterweight adjustment are significantly improved, and high-precision balance correction is more beneficial to be realized. Finally, the wind wheel is installed on the balancing machine, tested, and drilled to remove weight, and the process is the prior art.

[0027] Among them, a pair of second limiting rods 11 are arranged on the outer side wall of the channel steel back plate 1, the second limiting hole 14 is arranged on the counterweight adjusting plate 9, and the second limiting hole 14 is sleeved on the second limiting rod 11, to further ensure the stability of the counterweight adjusting plate 9.

[0028] Wherein, the lower bottom surface of the clamping plate 4 and the upper surface of the channel steel bottom plate 2 are provided with clamping columns 12, which are located away from the channel steel back plate 1, in the work, the wind wheel rotation will produce centrifugal force, once the clamping is loose, the counterweight device is easy to fly out, and the clamping column 12 can be clamped in the inner ring of the wind wheel, effectively avoiding the possibility of the counterweight device flying out due to the clamping loosening.

[0029] Wherein, the contact surface of the clamping plate 4 and the wind wheel is provided with rubber pads 13, and the clamping column 12 is provided with a rubber sleeve 16, which avoids the hard contact of the metal parts with the surface of the wind wheel, effectively preventing the physical damage such as indentation and scratch to the wind wheel in the clamping or testing process, and protecting the integrity and precision of the wind wheel.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A counterweight device for compressor fan wheel balance testing, characterized by, The utility model provides a wind turbine's slot steel, it includes slot steel, clamping mechanism and counterweight adjusting mechanism, the slot steel includes slot steel roof (3), slot steel backplate (1) and slot steel soleplate (2), the clamping mechanism sets up on slot steel roof (3), can cooperate slot steel soleplate (2) clamping on wind wheel, the counterweight adjusting mechanism sets up on slot steel backplate (1), can carry out counterweight adjustment; The clamping mechanism includes clamping plate (4), screw thread column (5) and a plurality of first limit rod (7), the clamping plate (4) is horizontally arranged between slot steel roof (3) and slot steel soleplate (2), a plurality of first limit rod (7) are evenly arranged on the upper surface of clamping plate (4), the slot steel roof (3) is provided with first limit hole (15) corresponding to the position of first limit rod (7), and first limit rod (7) is vertically movable and penetrates first limit hole (15), the lower end of screw thread column (5) is rotatably connected with the center position of the upper surface of clamping plate (4), the slot steel roof (3) is provided with a threaded hole corresponding to the position of screw thread column (5), and screw thread column (5) is screwed in the threaded hole, and the upper end of screw thread column (5) is provided with a handle (6); The counterweight adjusting mechanism includes fixed screw thread column (8), counterweight adjusting plate (9) and precision counterweight nut (10), the fixed screw thread column (8) is fixedly arranged on the center position of the outer side wall of slot steel backplate (1), the counterweight adjusting plate (9) is provided with a through hole in the center position and is sleeved on the fixed screw thread column (8) through the through hole, the precision counterweight nut (10) is screwed on the fixed screw thread column (8) and is pressed against the counterweight adjusting plate (9), and the counterweight adjusting plate (9) and the precision counterweight nut (10) are provided with a plurality of weights.

2. A counterweight device for use in balancing a compressor fan wheel as set forth in claim 1, wherein, The outer side wall of the slot steel backplate (1) is provided with a pair of second limit rods (11), and the counterweight adjusting plate (9) is provided with a second limit hole (14) and is sleeved on the second limit rod (11) through the second limit hole (14).

3. The counterweight device for testing balance of a compressor fan wheel according to claim 1, wherein The lower bottom surface of the clamping plate (4) and the upper surface of the slot steel soleplate (2) are provided with a clamping column (12), and the clamping column (12) is located away from the slot steel backplate (1).

4. The counterweight device for testing balance of a compressor fan wheel according to claim 3, wherein The clamping column (12) is provided with a rubber sleeve (16).

5. The counterweight device for testing balance of a compressor fan wheel according to claim 1, wherein The lower bottom surface of the clamping plate (4) and the upper surface of the slot steel soleplate (2) are provided with a rubber gasket (13).

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