CN-121720645-B - Air floating type clamping tool and impeller dynamic balance test equipment

CN121720645BCN 121720645 BCN121720645 BCN 121720645BCN-121720645-B

Abstract

The invention belongs to the technical field of impeller detection and provides an air-floating clamping tool and impeller dynamic balance testing equipment, wherein the air-floating clamping tool comprises an outer fixed sleeve, a first air inlet connecting hole, a second air inlet connecting hole and a third air inlet connecting hole are formed in the outer fixed sleeve, an inner mounting cylinder is fixedly arranged in the outer fixed sleeve, and a wheel shaft sleeve is arranged in the inner mounting cylinder through an end cover and a locking compression ring; the wheel shaft sleeve is characterized in that one side of the end cover, which is far away from the wheel shaft sleeve, is provided with an outer end surface groove, a first air inlet connecting hole is communicated with the outer end surface groove through a first air flow channel, a middle cavity is formed between the wheel shaft sleeve and the middle part of the wheel shaft of the impeller in a test state in a surrounding mode, a second air inlet connecting hole is communicated with the middle cavity through a second air flow channel, the inner walls of the top and the bottom of the wheel shaft sleeve are provided with a plurality of air blowing holes, and a third air inlet connecting hole is communicated with the air blowing holes through a third air flow channel. The invention ensures higher dynamic balance test precision of the impeller, avoids secondary damage to the impeller possibly caused in the test process, and greatly improves the test efficiency of the impeller.

Inventors

CHEN LIANG
LIU HONGSHAN
QIN PENGXIANG
XU XINGCHENG
KONG YAN
ZHENG ZIWEN
ZHANG JIAKUI
ZHANG YONGJIE
ZHOU PENG
ZHAO KAIQIANG
XU CHENGRUI

Assignees

潍坊富源增压器有限公司

Dates

Publication Date: 20260508
Application Date: 20260225

Claims (7)

1. The air floating type clamping tool is characterized by comprising an outer fixing sleeve (1), wherein an inner mounting cylinder (2) is fixedly mounted in the outer fixing sleeve (1), a wheel shaft sleeve (3) is arranged in the inner mounting cylinder (2), an end cover (4) is fixedly mounted at the top end of the inner mounting cylinder (2), a locking compression ring (5) is mounted at the bottom end thread of the inner mounting cylinder (2), the wheel shaft sleeve (3) is positioned between the end cover (4) and the locking compression ring (5), and two ends of the wheel shaft sleeve (3) respectively abut against the end cover (4) and the locking compression ring (5); An outer end face groove (401) is formed in one side, away from the wheel axle sleeve (3), of the end cover (4), a first air inlet joint hole (102) is formed in the outer fixing sleeve (1), and a first air flow channel for communicating the first air inlet joint hole (102) with the outer end face groove (401) is formed among the outer fixing sleeve (1), the inner mounting cylinder (2) and the end cover (4); The inner diameter of the top of the wheel axle sleeve (3) is matched with the outer diameter of the top of the wheel axle of the impeller (12), the inner diameter of the bottom of the wheel axle sleeve (3) is matched with the outer diameter of the tail of the wheel axle of the impeller (12), when the wheel axle sleeve is in a test state, a middle cavity (11) is formed between the wheel axle sleeve (3) and the middle part of the wheel axle of the impeller (12), and an air passing gap is formed between the top of the wheel axle sleeve (3) and the top of the wheel axle of the impeller (12) and between the bottom of the wheel axle sleeve (3) and the tail of the wheel axle of the impeller (12); A second air inlet connecting hole (103) is formed in the outer fixing sleeve (1), and a second air flow channel for communicating the second air inlet connecting hole (103) with the middle cavity (11) is formed among the outer fixing sleeve (1), the inner mounting cylinder (2) and the wheel axle sleeve (3); A plurality of air blowing holes (302) are uniformly formed in the top and bottom inner walls of the wheel axle sleeve (3) along the circumferential direction of the wheel axle sleeve, a third air inlet connecting hole (104) is formed in the outer fixing sleeve (1), and a third air flow channel which is communicated with the third air inlet connecting hole (104) and the air blowing holes (302) is formed among the outer fixing sleeve (1), the inner mounting cylinder (2) and the wheel axle sleeve (3); An annular first outer wall groove (202) is formed in the outer wall of the inner mounting cylinder (2), a first air cavity is formed between the inner mounting cylinder (2) and the outer fixing sleeve (1) in a surrounding mode through the first outer wall groove (202), and the first air inlet connecting hole (102) is communicated with the first air cavity; An annular inner end surface groove (402) is formed in one side, close to the inner mounting cylinder (2), of the end cover (4), and a second air cavity is formed by surrounding the end cover (4) between the inner end surface groove (402) and the inner mounting cylinder (2); a plurality of first air passing holes (203) are uniformly formed in the top of the inner mounting cylinder (2) along the circumferential direction of the inner mounting cylinder, the first air cavity is communicated with the second air cavity through the first air passing holes (203), a plurality of second air passing holes (403) are uniformly formed in the end cover (4) along the circumferential direction of the end cover, and the second air cavity is communicated with the outer end face groove (401) through the second air passing holes (403); the first air cavity, the first air passing hole (203), the second air cavity and the second air passing hole (403) are sequentially communicated to form the first air flow channel; An annular second outer wall groove (204) is formed in the outer wall of the inner mounting cylinder (2), a third air cavity is formed between the inner mounting cylinder (2) and the outer fixing sleeve (1) in a surrounding mode through the second outer wall groove (204), and the second air inlet connecting hole (103) is communicated with the third air cavity; an annular first inner wall groove (205) is formed in the inner wall of the inner mounting cylinder (2), the first inner wall groove (205) is located in the middle of the inner mounting cylinder (2), and a fourth air cavity is formed between the inner mounting cylinder (2) and the wheel axle sleeve (3) in a surrounding mode through the first inner wall groove (205); A plurality of third air passing holes (206) are uniformly formed in the middle of the inner mounting cylinder (2) along the circumferential direction of the inner mounting cylinder, the third air cavity is communicated with the fourth air cavity through the third air passing holes (206), a plurality of fourth air passing holes (301) are uniformly formed in the middle of the wheel axle sleeve (3) along the circumferential direction of the wheel axle sleeve, and the fourth air cavity is communicated with the middle cavity (11) through the fourth air passing holes (301); The third air cavity, the third air passing hole (206), the fourth air cavity and the fourth air passing hole (301) are sequentially communicated to form the second air flow channel; An annular third outer wall groove (207) is formed in the outer wall of the inner mounting cylinder (2), a fifth air cavity is formed between the inner mounting cylinder (2) and the outer fixing sleeve (1) in a surrounding mode through the third outer wall groove (207), and the third air inlet connecting hole (104) is communicated with the fifth air cavity; An annular second inner wall groove (208) is formed in the inner wall of the inner mounting cylinder (2), the second inner wall groove (208) is respectively positioned at the top and the bottom of the inner mounting cylinder (2), and a sixth air cavity is formed by surrounding the inner mounting cylinder (2) and the wheel axle sleeve (3) through the second inner wall groove (208); A plurality of fifth air passing holes (209) are uniformly formed in the bottom of the inner mounting cylinder (2) along the circumferential direction of the inner mounting cylinder, the fifth air cavity is communicated with the sixth air cavity through the fifth air passing holes (209), a plurality of sixth air passing holes (210) are uniformly formed in the middle of the inner mounting cylinder (2) along the circumferential direction of the inner mounting cylinder, two sixth air cavities are communicated through the sixth air passing holes (210), and the two sixth air cavities are respectively communicated with the air blowing holes (302); The fifth air chamber, the fifth air passing hole (209), the sixth air chamber, and the sixth air passing hole (210) form the third air flow passage.
2. The air floating clamping tool according to claim 1, wherein the top end of the inner mounting cylinder (2) extends out of the outer fixing sleeve (1) and is provided with an integrally formed fixing part (201), a crimping end plate (6) is arranged on one side of the fixing part (201) away from the outer fixing sleeve (1), the crimping end plate (6), the fixing part (201) and the outer fixing sleeve (1) are fixedly connected through bolts, and the end cover (4) is fixedly pressed between the crimping end plate (6) and the inner mounting cylinder (2); Locking clamping ring (5) include integrated into one piece's threaded connection portion (501) and screw adjusting part (502), threaded connection portion (501) screw mounting in the bottom of interior installation section of thick bamboo (2) and support wheel axle cover (3), screw adjusting part (502) are located in the installation section of thick bamboo (2) is outer, just screw the peripheral wall of adjusting part (502) and be equipped with anti-skidding annular knurl (5021).
3. The air floating type clamping tool according to claim 2, wherein a plurality of first sealing grooves are formed in the inner wall of the outer fixing sleeve (1), first sealing rings (7) are respectively arranged in the first sealing grooves, and the outer fixing sleeve (1) is in sealing connection with the inner mounting cylinder (2) through the first sealing rings (7); A plurality of second sealing grooves are formed in the inner wall of the inner mounting cylinder (2), second sealing rings (8) are respectively arranged in the second sealing grooves, and the inner mounting cylinder (2) is in sealing connection with the wheel shaft sleeve (3) by using the second sealing rings (8); A third sealing groove is formed in the top end of the inner mounting cylinder (2), a third sealing ring (9) is arranged in the third sealing groove, and the end cover (4) is in sealing connection with the inner mounting cylinder (2) by utilizing the third sealing ring (9); a fourth sealing groove is formed in the top end of the wheel axle sleeve (3), a fourth sealing ring (10) is installed in the fourth sealing groove, and the end cover (4) is in sealing connection with the wheel axle sleeve (3) by means of the fourth sealing ring (10).
4. The air floating clamping tool according to claim 2, wherein the end cover (4) is uniformly provided with a plurality of exhaust holes (404) along the circumferential direction of the end cover, the fixing part (201) is provided with a plurality of strip-shaped holes (2011) corresponding to the exhaust holes (404), when the air floating clamping tool is in a test state, an exhaust cavity is formed by surrounding between the end cover (4), the wheel axle sleeve (3) and the wheel axle top of the impeller (12), and the exhaust cavity is communicated with the strip-shaped holes (2011) through the exhaust holes (404).
5. The impeller dynamic balance test equipment is characterized by comprising the air floating type clamping tool disclosed in claim 1 and further comprising a frame (13), wherein the air floating type clamping tool is vertically and fixedly arranged on the frame (13) through an outer fixing sleeve (1), a lifting fan cover (24) for driving an impeller (12) to rotate is arranged above the air floating type clamping tool, the lifting fan cover (24) is communicated with an air supply device, the lifting fan cover (24) is slidably arranged on the frame (13) along the vertical direction and is driven by a first driving device, and a detection sensor (26) for realizing dynamic balance detection of the impeller (12) is arranged above the lifting fan cover (24); The lower part of the air floatation type clamping tool is correspondingly provided with an impeller jacking device, and one side of the air floatation type clamping tool is also provided with an impeller taking and placing device for taking and placing impellers (12).
6. The impeller dynamic balance test equipment according to claim 5, wherein a fan housing mounting plate (18) driven by the first driving device is slidably mounted on the frame (13) along a vertical direction, the lifting fan housing (24) is fixedly mounted at the bottom of the fan housing mounting plate (18), the lifting fan housing (24) is of an annular cylindrical structure, a plurality of obliquely arranged air outlet holes (2402) are uniformly formed in the inner wall of the lifting fan housing (24) along the circumferential direction of the lifting fan housing, in a test state, the impeller (12) is inserted on the air floating clamping tool, the lifting fan housing (24) is sleeved outside a blade assembly of the impeller (12), and the axial direction of the air outlet holes (2402) is consistent with the blade incidence angle of the impeller (12); The top of fan housing mounting panel (18) fixed mounting has sensor mounting panel (25), detection sensor (26) fixed mounting in on sensor mounting panel (25), just detection sensor (26) with lift fan housing (24) correspond the setting.
7. The impeller dynamic balance test apparatus according to claim 5, wherein the impeller jacking device comprises a jacking base (27) fixedly mounted on the frame (13), an axle ejector rod (30) driven by a second driving device is slidingly mounted on the jacking base (27) along the vertical direction, and the axle ejector rod (30) is arranged corresponding to an axle of the impeller (12) in a test state; The impeller picking and placing device comprises a lifting mounting plate (36) which is slidably mounted on the frame (13) in the vertical direction and driven by a third driving device, a translation mounting plate (44) which is slidably mounted on the lifting mounting plate (36) in the horizontal direction and driven by a fourth driving device is fixedly mounted on the translation mounting plate (44), a clamping jaw air cylinder (53) for clamping the impeller (12) is arranged on the translation mounting plate (44), the clamping jaw air cylinder (53) is located between the air floating clamping tool and the lifting fan housing (24), and an axle clamp (54) which is matched with an axle of the impeller (12) is fixedly mounted on a clamping jaw finger of the clamping jaw air cylinder (53).

Description

Air floating type clamping tool and impeller dynamic balance test equipment Technical Field The invention relates to the technical field of impeller detection, in particular to an air floating type clamping tool and impeller dynamic balance testing equipment. Background The impeller is used as a core component of the supercharger and is important to the improvement of the performance of the engine. In the production and processing process of the impeller, due to uneven materials, blank defects, errors generated in processing and assembly, even design, the impeller has asymmetric geometric shapes and other factors, when the impeller rotates at a high speed, unbalanced centrifugal force can be generated due to uneven mass distribution, the force can be increased in proportion to the square of the rotating speed, the force acts on a machine and a foundation thereof through a bearing, vibration is caused, noise is generated, bearing abrasion is accelerated, the service life of the machine is shortened, and destructive accidents can be caused in serious cases. The dynamic balance test of the impeller is a key process for detecting uneven mass distribution of the impeller in a rotating state through special equipment, controlling centrifugal force deviation in the rotating process to be in an allowable range through correction, reducing vibration and noise, and improving the running stability and service life of the equipment. In the testing process, the magnitude and the position of the unbalance are calculated by measuring the vibration amplitude and the phase when the impeller rotates, and the original unbalance is counteracted by weighting or de-weighting. The dynamic balance test is carried out on the impeller to ensure that the impeller reaches the allowable balance precision level, or the amplitude of the mechanical vibration generated by the dynamic balance test is reduced within the allowable range. At present, the dynamic balance test of the impeller mainly comprises an off-line dynamic balance test and an on-line dynamic balance test. The off-line dynamic balance test is to detach the impeller from the equipment, install the impeller on a special dynamic balance test device, start the test after setting the rotating speed, collect vibration data through a sensor, calculate the unbalance amount, then carry out weighting/de-weighting correction, and test again until reaching the standard. The off-line dynamic balance test has the advantage of high test precision, and is suitable for factory detection or correction after overhaul of the new impeller. However, the current offline dynamic balance testing device is gradually discovered in the use process, and the device still has the following defects: (1) The large contact friction exists between the impeller and the clamping tool of the testing device, so that the testing precision of the impeller can be influenced, and secondary damage to the impeller can be possibly caused in the testing process; (2) Most of the test equipment adopts a power source to drive the impeller to rotate in a mechanical transmission connection mode, and the impeller is interfered when the impeller is driven to rotate, so that the test precision of the impeller is affected; (3) The installation and the dismantlement when being inconvenient for testing the impeller for the dismouting complex operation of impeller on dynamic balance testing arrangement is inconvenient, wastes time and energy, and then directly influences the efficiency of software testing to the impeller. Disclosure of Invention The present invention has been made in order to overcome the above-indicated drawbacks of the prior art, and has been accomplished after a great deal of creative effort. The invention aims to solve the technical problems of poor testing precision, complicated and inconvenient testing operation, time and labor waste and low testing efficiency of the existing impeller testing device by providing an air floating clamping tool and impeller dynamic balance testing equipment. In order to solve the technical problems, the technical scheme of the invention is as follows: The air floating type clamping tool comprises an outer fixed sleeve, an inner mounting cylinder is fixedly mounted in the outer fixed sleeve, a wheel shaft sleeve is arranged in the inner mounting cylinder, an end cover is fixedly mounted at the top end of the inner mounting cylinder, a locking compression ring is mounted at the bottom end thread of the inner mounting cylinder, the wheel shaft sleeve is positioned between the end cover and the locking compression ring, and two ends of the wheel shaft sleeve respectively abut against the end cover and the locking compression ring; An outer end surface groove is formed in one side, away from the wheel shaft sleeve, of the end cover, a first air inlet joint hole is formed in the outer fixing sleeve, and a first air flow channel for communicating the first air inlet joint hole with the