Measuring tool for turbocharger

Abstract

The invention discloses a measuring tool for a turbocharger, and relates to the technical field of turbochargers, the measuring tool comprises a supporting bottom plate, the supporting bottom plate is fixedly connected with a driving electric push rod, the output end of the driving electric push rod is fixedly connected with a fixing support, and the fixing support is provided with a spacing adjusting mechanism; the distance adjusting mechanism comprises a driving assembly and a distance changing assembly. The distance changing assembly comprises an annular fixing seat fixedly connected to the fixing support, a connecting ring is arranged below the annular fixing seat, an arc-shaped sliding groove is formed in the connecting ring, a first circular gear is driven to rotate by starting a distance adjusting motor, and then through transmission of a first transmission gear ring, the connecting ring, a connecting shaft and a connecting rod, the distance adjusting motor is driven to rotate; the position of the measuring rod in the measuring storage box can be automatically adjusted, so that the measuring rod can be tightly attached to impeller blades of different sizes, the universality and flexibility of the tool are enhanced, and wider impeller measuring requirements can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of turbochargers, in particular to a measuring tool for a turbocharger. Background Art

[0002] In the production of turbocharger impellers, due to various factors such as uneven material, defects in blanks, errors caused by processing and assembly, and even asymmetric geometric shapes during design, the outer diameter of the impeller deviates, and the radial end face runout of the blade exceeds the design value, which will lead to a large initial imbalance of the impeller, requiring a large amount of counterweight to be added during the later dynamic balancing operation; or after the impeller is installed in the air guide ring, the impeller and the air guide ring are scratched due to dimensional tolerance, resulting in a bore sweeping failure and shortening the service life; therefore, the impeller must undergo strict inspection after completing welding correction or assembly work, and unqualified impellers are strictly prohibited from entering the next production process.

[0003] A tool for continuously and quickly measuring the radial end face runout of an impeller blade with the publication number CN115560648A discloses a tool for continuously and quickly measuring the radial end face runout of an impeller blade, comprising a machine base, a mounting shaft is arranged on the end face of the machine base, a detection station is also arranged on the end face of the machine base, the detection station comprises a mounting seat and a trigger rod slidably connected to the side wall of the mounting seat facing the mounting shaft, a detection cylinder is arranged in the mounting seat, a plurality of detection rods are slidably arranged on the detection cylinder along the circumferential direction, a scale is arranged on the side wall of the detection rod, a through groove for extending the detection rod is circumferentially opened on the mounting seat, the detection rod has a trigger part, the trigger rod is opposite to one of the trigger parts, a driving assembly is also arranged in the mounting cavity, when the trigger rod is inserted into the mounting cavity, the trigger rod can push the corresponding detection rod out of the through groove, and drive the detection cylinder to rotate through the driving assembly so that the trigger rod is opposite to different trigger parts.

[0004] However, during the implementation of the above patent, although each out-of-tolerance blade will cause squeezing of the trigger rod, several out-of-tolerance blades in the same impeller will push out corresponding detection rods respectively. By observing the scale on each detection rod, it is possible to know in order which blades are out-of-tolerance blades, and it is possible to conveniently know the specific out-of-tolerance size data of the out-of-tolerance blades, but there are still the following defects: (1) When measuring multiple impellers at the same time, each impeller needs to contact the detection rod again and push the corresponding contact rod, which is likely to cause a deviation in the initial point where the contact rod actually contacts the next impeller, resulting in an error in the measurement result; (2) After the impeller rotates one circle, it is not easy to distinguish which impeller the value on the detection rod is the measurement value of; (3) The impeller cannot be installed on the mounting shaft according to the radius of the impeller mounting hole; (4) The measuring rod is not adjusted to the initial height position of contact with the impeller according to the inclination angle of the blades on the impeller. Summary of the invention

[0005] In order to solve the problems raised by the above background technology, the present invention proposes a measuring tool for a turbocharger.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A measuring tool for a turbocharger, comprising a supporting base plate, a driving electric push rod is fixedly connected to the supporting base plate, an output end of the driving electric push rod is fixedly connected to a fixing bracket, and a spacing adjustment mechanism is installed on the fixing bracket;

[0008] The spacing adjustment mechanism includes a driving assembly and a pitch changing assembly; the pitch changing assembly includes an annular fixing seat fixedly connected to a fixing bracket, and a connecting ring is arranged below the annular fixing seat, an arc-shaped slide groove is arranged on the connecting ring, and the arc-shaped slide groove is connected to a connecting shaft through a slider, a connecting rod is fixedly connected to the upper end of the connecting shaft, and the connecting rod is slidably connected to the annular fixing seat, and a measuring storage box is fixedly connected to the upper end of the connecting rod.

[0009] As a further preferred embodiment of the present technical solution: the driving assembly includes a motor base fixedly connected to an annular fixing seat, a spacing adjustment motor is arranged at the upper end of the motor base, a No. 1 circular gear is fixedly connected to the output end of the spacing adjustment motor, and a No. 1 transmission gear ring is arranged on the outer wall of the connecting ring, and the No. 1 transmission gear ring is meshedly connected with the No. 1 circular gear.

[0010] As a further preferred embodiment of the present technical solution: a rotating mechanism is also installed on the supporting base plate, and the rotating mechanism includes a rotating motor fixedly connected to the supporting base plate, and the output end of the rotating motor is fixedly connected to a No. 2 gear, and the No. 2 gear is meshingly connected to a No. 2 transmission gear ring, and the interior of the No. 2 transmission gear ring is fixedly connected to a mounting shaft, and the lower end of the mounting shaft is rotatably connected to the supporting base plate, and a placement plate is fixedly connected to the mounting shaft.

[0011] As a further preferred embodiment of the present technical solution: a fixing mechanism is installed on the rotating mechanism, and the fixing mechanism includes two limit blocks slidably connected to the inside of the mounting shaft, each limit block is fixedly connected to a shift rod at the upper end, the two shift rods are slidably connected to the mounting shaft, and a clamping spring is arranged between the two limit blocks.

[0012] As a further preferred embodiment of the present technical solution: a measuring rod is slidably provided inside the measuring storage box, a baffle is provided on the measuring rod, and a return spring is provided inside the measuring storage box, one end of the return spring is fixedly connected to the baffle, and the other end of the return spring is fixedly connected to the measuring storage box, and scale lines are provided on the measuring rod.

[0013] As a further preferred embodiment of the technical solution: a plurality of arc-shaped sliding grooves are provided on the connecting ring, and the plurality of arc-shaped sliding grooves are arranged in a ring array.

[0014] As a further preferred embodiment of the present technical solution: the connecting shafts and connecting rods are arranged in an annular array on an annular fixing seat, and the connecting shafts are correspondingly arranged directly above the arc-shaped sliding grooves.

[0015] As a further preferred embodiment of the technical solution: rubber blocks are arranged on both of the limit blocks.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the spacing adjustment motor is started to drive the No. 1 circular gear to rotate, and then the No. 1 transmission gear ring, the connecting ring, the connecting shaft and the connecting rod are transmitted, so that the measuring rod in the measuring storage box can automatically adjust the position so that it fits closely with different sizes and impeller blades, thereby enhancing the versatility and flexibility of the tooling and covering a wider range of impeller measurement needs.

[0018] 2. In the present invention, the fixed bracket is raised or lowered by driving the electric push rod, thereby driving the height of the measuring rod thereon to be adjusted so that it is the same as the initial contact height of the blades on the impeller, thereby ensuring the consistency of the initial positions of multiple blades on the impeller when being measured.

[0019] 3. In the present invention, by moving the lever, and through the limit block and the clamping spring, the impeller is firmly fixed on the mounting shaft, avoiding the swing of the impeller when the mounting shaft rotates, thereby improving the accuracy and stability of the measurement.

[0020] 4. In the present invention, multiple impellers are measured simultaneously by multiple measuring rods, so that the measurement data corresponding to each impeller can be clearly identified, the problem of easily confusing measurement values ​​is solved, and the traceability and management efficiency of the measurement data are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a turbocharger measuring tool of the present invention;

[0022] Figure 2 A schematic diagram of a partial three-dimensional structure of a turbocharger measuring tool of the present invention Figure 1 ;

[0023] Figure 3 A schematic diagram of a partial three-dimensional structure of a turbocharger measuring tool of the present invention Figure 2 ;

[0024] Figure 4 A partial three-dimensional structural cross-sectional view of a turbocharger measuring tool of the present invention;

[0025] Figure 5 for Figure 1 The enlarged schematic diagram at A in the middle;

[0026] Figure 6 A schematic diagram of a partial three-dimensional structure of a turbocharger measuring tool of the present invention Figure 3 ;

[0027] Figure 7 The figure is a partial three-dimensional structure explosion diagram of a turbocharger measuring tool of the present invention.

[0028] Legend: 100, support base plate; 200, drive electric push rod; 300, fixed bracket; 400, annular fixing seat; 401, motor base; 402, spacing adjustment motor; 403, No. 1 circular gear; 404, No. 1 transmission gear ring; 405, connecting ring; 406, arc-shaped slide groove; 407, connecting shaft; 408, connecting rod; 409, measuring storage box; 500, measuring rod; 501, baffle; 502, reset spring; 503, scale line; 600, rotating motor; 601, No. 2 gear; 602, No. 2 transmission gear ring; 603, installation shaft; 604, placement plate; 700, limit block; 701, lever; 702, clamping spring; 703, rubber block. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-Figure 7 The present application provides a turbocharger measuring tool, comprising a supporting base plate 100, a driving electric push rod 200 is fixedly connected to the supporting base plate 100, a fixed bracket 300 is fixedly connected to the output end of the driving electric push rod 200, and a spacing adjustment mechanism is installed on the fixed bracket 300, and the fixed bracket 300 is raised or lowered by driving the electric push rod 200, thereby driving the height of the measuring rod 500 thereon to be adjusted so that the height is the same as the initial contact height of the blades on the impeller, thereby ensuring the consistency of the initial positions of multiple blades on the impeller when being measured;

[0032] The spacing adjustment mechanism includes a driving component and a pitch changing component; the pitch changing component includes an annular fixing seat 400 fixedly connected to the fixing bracket 300, and a connecting ring 405 is arranged below the annular fixing seat 400, and an arc-shaped slide groove 406 is arranged on the connecting ring 405, and the arc-shaped slide groove 406 is connected to a connecting shaft 407 through a slider, and a connecting rod 408 is fixedly connected to the upper end of the connecting shaft 407, and the connecting rod 408 is slidably connected to the annular fixing seat 400, and a measuring storage box 409 is fixedly connected to the upper end of the connecting rod 408. By starting the spacing adjustment motor 402, the first circular gear 403 is driven to rotate, and then through the transmission of the first transmission gear ring 404, the connecting ring 405, the connecting shaft 407 and the connecting rod 408, the measuring rod 500 in the measuring storage box 409 can automatically adjust its position so that it fits closely with different sizes and impeller blades, thereby enhancing the versatility and flexibility of the tooling and being able to cover a wider range of impeller measurement needs.

[0033] The driving assembly includes a motor base 401 fixedly connected to the annular fixing seat 400, a spacing adjustment motor 402 is arranged at the upper end of the motor base 401, a No. 1 circular gear 403 is fixedly connected to the output end of the spacing adjustment motor 402, and a No. 1 transmission gear ring 404 is arranged on the outer wall of the connecting ring 405, and the No. 1 transmission gear ring 404 is meshed and connected with the No. 1 circular gear 403.

[0034] The support base plate 100 is also provided with a rotating mechanism, which includes a rotating motor 600 fixedly connected to the support base plate 100, a second gear 601 fixedly connected to the output end of the rotating motor 600, a second gear 601 meshingly connected to a second transmission gear ring 602, and a mounting shaft 603 fixedly connected inside the second transmission gear ring 602, the lower end of the mounting shaft 603 is rotatably connected to the support base plate 100, a placement plate 604 is fixedly connected to the mounting shaft 603, and a connecting ring 405 is provided on the connecting ring 405. There are a plurality of arc-shaped slots 406, and the arc-shaped slots 406 are arranged in a ring array. The connecting shaft 407 and the connecting rod 408 are arranged in a ring array on the ring-shaped fixing seat 400, and the connecting shaft 407 is correspondingly arranged directly above the arc-shaped slot 406. The number of the connecting shafts 407 is the same as the number of blades on the impeller. Rubber blocks 703 are arranged on both limit blocks 700. The arrangement of the rubber blocks 703 can increase the friction between the limit blocks 700 and the inner wall of the impeller.

[0035] Embodiment 2:

[0036] On the basis of Example 1, a fixing mechanism is installed on the rotating mechanism, and the fixing mechanism includes two limit blocks 700 slidably connected to the inside of the mounting shaft 603, and each limit block 700 is fixedly connected to a lever 701 at the upper end, and the two levers 701 are slidably connected to the mounting shaft 603, and a clamping spring 702 is arranged between the two limit blocks 700. By moving the lever 701 and through the limit blocks 700 and the clamping spring 702, the impeller is firmly fixed on the mounting shaft 603, and the swing of the impeller when the mounting shaft 603 rotates is avoided, thereby improving the accuracy and stability of the measurement.

[0037] Embodiment three:

[0038] On the basis of Example 1, a measuring rod 500 is slidingly provided inside the measuring storage box 409, a baffle 501 is provided on the measuring rod 500, and a reset spring 502 is provided inside the measured storage box 409, one end of the reset spring 502 is fixedly connected to the baffle 501, and the other end of the reset spring 502 is fixedly connected to the measuring storage box 409, and a scale line 503 is provided on the measuring rod 500. By measuring multiple impellers simultaneously with multiple measuring rods 500, the measurement data corresponding to each impeller can be clearly identified, thereby solving the problem of easily confusing measurement values ​​and improving the traceability and management efficiency of the measurement data.

[0039] Working principle: First, the staff presses the lever 701 toward the middle to drive the limit block 700 to move into the inside of the installation shaft 603, and the clamping spring 702 is compressed. Then, the impeller with blades is mounted on the installation shaft 603 and placed on the placement plate 604. After that, the lever 701 is released. Under the thrust of the clamping spring 702, the two limit blocks 700 slide out from the inside of the installation shaft 603 to fix the inner wall of the impeller, so as to avoid the installation shaft 603 from swinging continuously when rotating, which may cause inaccurate measurement results.

[0040] Next, the first circular gear 403 is driven to rotate by driving the spacing adjustment motor 402, and the first circular gear 403 drives the first transmission gear ring 404 to rotate, and the first transmission gear ring 404 drives the inner connecting ring 405 to rotate, so that the multiple arc-shaped slide grooves 406 arranged in a circular array on the connecting ring 405 and the slider inside the arc-shaped slide grooves 406 slide relative to each other, so that the connecting shaft 407 drives the connecting rod 408 to slide relative to the annular fixing seat 400, and the connecting rod 408 drives the measuring storage box 409 to move toward the impeller, and the measuring storage box 409 drives the multiple measuring rods 500 inside to contact the multiple blades on the impeller respectively. At this point, it is convenient to adjust the position of the measuring rod 500 according to the impellers of different sizes, so that the measuring rod 500 can always fit with the blades on the impeller;

[0041] Then, the electric push rod 200 is started to drive the fixing bracket 300 to move upward or downward, the fixing bracket 300 drives the annular fixing seat 400 to move upward or downward, and the annular fixing seat 400 drives the components thereon including the measuring rod 500 to move up and down, so that the measuring rod 500 can be adjusted to the initial height position in contact with the impeller according to the inclination angle of the blades on the impeller, thereby ensuring the consistency of the measurement results;

[0042] Finally, by starting the rotating motor 600, the second gear 601 is driven to rotate, the second gear 601 drives the second transmission ring 602 to rotate, the second transmission ring 602 drives the installation shaft 603 to rotate, and then drives the impeller to rotate. While the impeller rotates, the blades thereon push the measuring rod 500. During this process, the reset spring 502 is compressed. When the measuring rod 500 slides from the bottom end of the impeller blade to the upper end, the reading of the scale line 503 is read to measure the out-of-tolerance size of the blade. Each blade corresponds to a measuring rod 500, which is convenient for the staff to make judgments.

[0043] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A turbocharger measuring tool, comprising a supporting base plate (100), characterized in that: A driving electric push rod (200) is fixedly connected to the supporting base plate (100), an output end of the driving electric push rod (200) is fixedly connected to a fixing bracket (300), and a spacing adjustment mechanism is installed on the fixing bracket (300); The spacing adjustment mechanism comprises a driving component and a pitch changing component; the pitch changing component comprises an annular fixing seat (400) fixedly connected to a fixing bracket (300), and a connecting ring (405) is arranged below the annular fixing seat (400), an arc-shaped sliding groove (406) is arranged on the connecting ring (405), and the arc-shaped sliding groove (406) is connected to a connecting shaft (407) through a sliding block, and a connecting rod (408) is fixedly connected to the upper end of the connecting shaft (407), and the connecting rod (408) is slidably connected to the annular fixing seat (400), and a measuring storage box (409) is fixedly connected to the upper end of the connecting rod (408).

2. The turbocharger measuring tool according to claim 1, characterized in that: The driving assembly comprises a motor base (401) fixedly connected to an annular fixing seat (400), a spacing adjustment motor (402) being arranged at the upper end of the motor base (401), a first circular gear (403) being fixedly connected to the output end of the spacing adjustment motor (402), and a first transmission gear ring (404) being arranged on the outer wall of the connecting ring (405), and the first transmission gear ring (404) being meshingly connected to the first circular gear (403).

3. The turbocharger measuring tool according to claim 1, characterized in that: A rotating mechanism is also installed on the supporting base plate (100), and the rotating mechanism comprises a rotating motor (600) fixedly connected to the supporting base plate (100), the output end of the rotating motor (600) is fixedly connected to a second gear (601), the second gear (601) is meshingly connected to a second transmission gear ring (602), and the interior of the second transmission gear ring (602) is fixedly connected to a mounting shaft (603), the lower end of the mounting shaft (603) is rotatably connected to the supporting base plate (100), and a placement plate (604) is fixedly connected to the mounting shaft (603).

4. The turbocharger measuring tool according to claim 3, characterized in that: A fixing mechanism is installed on the rotating mechanism, and the fixing mechanism comprises two limit blocks (700) slidably connected inside the installation shaft (603), the upper end of each limit block (700) is fixedly connected to a shifting rod (701), the two shifting rods (701) are slidably connected to the installation shaft (603), and a clamping spring (702) is arranged between the two limit blocks (700).

5. The turbocharger measuring tool according to claim 2, characterized in that: A measuring rod (500) is slidably arranged inside the measuring storage box (409), a baffle (501) is arranged on the measuring rod (500), and a return spring (502) is arranged inside the measuring storage box (409), one end of the return spring (502) is fixedly connected to the baffle (501), and the other end of the return spring (502) is fixedly connected to the measuring storage box (409), and a scale line (503) is arranged on the measuring rod (500).

6. The turbocharger measuring tool according to claim 1, characterized in that: A plurality of arc-shaped sliding grooves (406) are provided on the connecting ring (405), and the plurality of arc-shaped sliding grooves (406) are arranged in a ring array.

7. The turbocharger measuring tool according to claim 2, characterized in that: The connecting shafts (407) and connecting rods (408) are arranged in an annular array on the annular fixing seat (400), and the connecting shafts (407) are correspondingly arranged directly above the arc-shaped sliding grooves (406).

8. The turbocharger measuring tool according to claim 4, characterized in that: Rubber blocks (703) are provided on both of the two limit blocks (700).

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