CN218211061U

CN218211061U - A measuring device that beats for gas turbine starter rotor bearing

Info

Publication number: CN218211061U
Application number: CN202222213473.2U
Authority: CN
Inventors: 王界强; 张琴; 黄浩; 贺勃龙; 张壮; 肖俊焜; 林翔; 潘星辰
Original assignee: Sichuan Chuanhang Aero Engine Maintenance Engineering Co ltd
Current assignee: Sichuan Chuanhang Aero Engine Maintenance Engineering Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-03
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a measuring device beats in gas turbine starter rotor bearing for the gas rotor that has the screw hole on the terminal surface center installs the bearing that awaits measuring on the gas rotor axle journal, and the bearing that awaits measuring has outer steel bushing and interior steel sheathing, including interconnect's casing and fixed block, be equipped with the screw that is used for being connected with the screw hole on the casing bottom surface, the casing constitutes the centre gripping hole that is used for the measuring stick of centre gripping amesdial after being connected with the fixed block. The centre gripping hole is cylindricly, and the axis of screw and the axis parallel arrangement in centre gripping hole. The axis of the screw and the axis of the clamping hole are eccentrically arranged, and the clamping hole is positioned right above the outer steel sleeve of the bearing to be tested in the state that the shell is installed on the gas rotor. The utility model discloses can measure the beating value of the outer steel casing of bearing on the outer steel casing terminal surface of bearing different positions when the gas rotor rotates, can adapt to different length measurement pole's amesdial simultaneously.

Description

A measuring device that beats for gas turbine starter rotor bearing

Technical Field

The utility model relates to an aviation gas turbine starter technical field, concretely relates to measuring device that beats for gas turbine starter rotor bearing.

Background

The aviation gas turbine starter is a small airplane Auxiliary Power device (APU for short) and is a starter with an upward exhaust port, mainly used for ground starting, cold transfer, false driving, unsealing and oil sealing of an engine, and can also work in a Power assembly state to provide energy required for ground maintenance.

The main bearing of the aviation gas turbine starter is a supporting point between a gas rotor and a shell, an inner steel sleeve of the bearing is sleeved on a gas rotor shaft neck, an outer steel sleeve of the bearing is fixed on a bearing elastic support of the shell, the bearing elastic support has a damping effect, and a roller or a ball is arranged in the middle of the bearing elastic support. When all unit body assemblies of the aviation gas turbine starter are assembled in a stacking mode, each bearing outer steel sleeve has the requirement of end face runout, the bearing end face runout requirement precision of the aviation engine is high, and the bearing end face runout requirement precision must be controlled within 0.05 mm.

The machining errors of the large part casings of the gas turbine starter cannot be eliminated. When the gas turbine starter is assembled in an abutting mode, after all the inner shell assemblies are stacked, machining tolerance is finally converted into accumulated errors to be concentrated at the bearing support at the rearmost end, the bearing end face jumping is difficult to be qualified, the coaxiality of all bearing supporting points is poor due to poor bearing end face jumping, the dynamic balance test cannot meet the technical requirements when a gas rotor works, the theoretical maximum value of the accumulated errors of the shell end face jumping exceeds the requirement of the bearing end face jumping, and the whole assembly quality of the gas turbine starter is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a measuring device beats for gas turbine starter rotor bearing, it can measure the bearing outer steel casing and can adapt to the amesdial of different length measuring poles simultaneously at the value of beating of different positions on the bearing outer steel casing terminal surface when gas rotor rotates.

In order to solve the technical problem, the utility model discloses a following scheme:

the utility model provides a jump measuring device for gas turbine starter rotor bearing for the gas rotor that has the screw hole on the terminal surface center, the screw hole sets up with the gas rotor is coaxial, installs the bearing that awaits measuring on the gas rotor axle journal, and the bearing that awaits measuring has outer steel bushing and interior steel jacket, including interconnect's casing and fixed block, is equipped with the screw that is used for being connected with the screw hole on the casing bottom surface, constitutes the centre gripping hole that is used for the measuring stick of centre gripping amesdial after the casing is connected with the fixed block. The utility model has the advantages of its effect does, through the setting of screw, can fix the casing on the screw hole of gas rotor, make casing and fixed block can centre gripping the amesdial rotate around gas rotor along with gas rotor's rotation, because at the rotatory in-process of gas rotor, the outer steel bushing of the bearing that awaits measuring can take place to rotate for gas rotor, make the measuring stick bottom of the amesdial of centre gripping in the centre gripping hole constantly change for the position on outer steel bushing top, reach the effect of measuring the beating value of different positions on the bearing outer steel bushing terminal surface when the bearing outer steel bushing rotates.

Furthermore, the clamping hole is cylindrical, and the axis of the screw is parallel to the axis of the clamping hole. The gas rotor measuring device has the advantages that the measuring rod of the dial indicator clamped in the clamping hole is arranged in parallel with the gas rotor, namely is arranged perpendicular to the end face of the outer steel sleeve which does not jump, and the jumping value of the outer steel sleeve is convenient to measure.

Furthermore, the axis of the screw and the axis of the clamping hole are eccentrically arranged, and the clamping hole is positioned right above the outer steel sleeve of the bearing to be tested in the state that the shell is installed on the gas rotor. The micrometer gauge has the advantages that the measuring rod of the micrometer gauge clamped in the clamping hole can be located right above the outer steel sleeve, the outer steel sleeve can be in contact with the bottom end of the measuring rod of the micrometer gauge when jumping, and the jumping value of the outer steel sleeve can be conveniently measured.

Furthermore, the shell is provided with at least one locking threaded hole perpendicular to the end face on the end face opposite to the fixed block, the fixed block is provided with a bolt through hole coaxial with the locking threaded hole, and the shell further comprises a locking bolt penetrating through the bolt through hole and in threaded connection with the locking threaded hole. The measuring rod clamping device is used for adjusting the distance between the fixed block and the shell through the locking bolt by twisting the locking bolt, so that the measuring rod of the dial indicator is switched to be loosened and clamped in the clamping hole, the position of the clamping hole in the axial direction of the measuring rod can be adjusted, and the effect of adapting to the dial indicators with measuring rods of different lengths is achieved.

Furthermore, all be equipped with the half-cylinder face that is used for constituting the centre gripping hole on casing and the fixed block, the both sides of half-cylinder face that the locking screw hole symmetry set up on the shell. The effect of the device is that the clamping force of the measuring rod of the dial indicator in the clamping hole is uniformly distributed by piling up the locking threaded holes.

Furthermore, the casing is T style of calligraphy on the longitudinal section at locking threaded hole axis place, and the casing is including the centre gripping section that is equipped with the half cylinder and the counter weight section of the half cylinder of dorsad and the support section of setting perpendicularly with the centre gripping section, and centre gripping section and counter weight section are located the both sides of support section respectively. The balance weight section is used for balancing the stress on the left side and the right side of the supporting section under the state that the measuring rod of the dial indicator is installed on the clamping section through the arrangement of the balance weight section, and the stress is concentrated in the middle of the supporting section as much as possible.

Further, the clamping hole is located outside the support section in a side view of the housing. The effect of the dial gauge is that the contact between the support section and the measuring rod of the dial gauge is avoided, and the measuring effect of the dial gauge is influenced.

Furthermore, the thread section of the screw is downwards vertically arranged at the center of the bottom surface of the support section.

Furthermore, a lightening hole is formed in the supporting section. The weight of the shell is reduced through the arrangement of the lightening holes on the premise that the measuring effect of the dial indicator is not influenced as much as possible, and the effect of the weight of a driving device for driving the gas rotor to rotate on the rotating speed of the gas rotor is reduced due to the fact that the measuring device is additionally arranged on the gas rotor.

Furthermore, the lightening hole, the locking threaded hole and the screw are arranged vertically, and the axis of the lightening hole is intersected with the axis of the screw. The effect of the anti-collision device is to avoid the influence on the stress balance of the shell due to the arrangement of the lightening holes.

The utility model discloses beneficial effect who has:

1. the casing can be fixed on the threaded hole of the gas rotor through the arrangement of the screw, so that the casing and the fixed block can clamp the dial indicator to rotate around the gas rotor along with the rotation of the gas rotor, and the position of the bottom end of the measuring rod of the dial indicator clamped in the clamping hole relative to the top end of the outer steel sleeve is continuously changed because the outer steel sleeve of the bearing to be measured can rotate relative to the gas rotor in the rotation process of the gas rotor, thereby achieving the effect of measuring the jumping values of different positions of the end surface of the outer steel sleeve of the bearing when the outer steel sleeve of the bearing rotates;

2. through the setting of locking bolt, can adjust the distance between fixed block and the casing through twisting back locking bolt to the measuring stick that switches the amesdial is not hard up and the clamp is tight in the grip slipper, can adjust the grip slipper is at the ascending position of measuring stick axial, reaches the effect of the amesdial that adapts to different length measuring sticks.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the present invention when the locking bolt is not installed;

FIG. 2 is a schematic cross-sectional view of the longitudinal section of the locking screw hole where the locking bolt is not installed according to the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is the utility model discloses the cross-sectional structure schematic diagram at the longitudinal section at centre gripping hole axis place when measuring the value of beating of outer steel bushing.

The reference numerals are explained below: 1. a gas rotor; 2. an inner steel sleeve; 3. an outer steel jacket; 4. a housing; 5. a fixed block; 6. a threaded hole; 7. a screw; 8. a measuring rod; 9. a clamping hole; 10. locking the threaded hole; 11. a bolt through hole; 12. locking the bolt; 13. a clamping section; 14. a counterweight segment; 15. a support section; 16. and (7) lightening holes.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The utility model provides a jump measuring device for gas turbine starter rotor bearing, as shown in FIG. 4, be used for the gas rotor 1 that has screw hole 6 on the terminal surface center, screw hole 6 and the coaxial setting of gas rotor 1, install the bearing that awaits measuring on the gas rotor 1 axle journal, the bearing that awaits measuring has outer steel bushing 3 and interior steel bushing 2, including interconnect's casing 4 and fixed block 5, be equipped with the screw 7 that is used for being connected with screw hole 6 on the casing 4 bottom surface, constitute the centre gripping hole 9 that is used for the measuring stick 8 of centre gripping amesdial after casing 4 is connected with fixed block 5. The effect does, through the setting of screw 7, can fix casing 4 on gas rotor 1's screw hole 6, make casing 4 and fixed block 5 can the centre gripping amesdial rotate around gas rotor 1 along with gas rotor 1's rotation, because at the rotatory in-process of gas rotor 1, the outer steel bushing 3 of the bearing that awaits measuring can take place to rotate for gas rotor 1, make the measuring stick 8 bottom of the amesdial of centre gripping in the centre gripping hole 9 constantly change for the position on 3 tops of outer steel bushing, reach the effect of measuring the beating value of different positions on the 3 terminal surfaces of bearing outer steel bushing 3 when gas rotor 1 rotates of bearing outer steel bushing 3.

Specifically, as shown in fig. 1, the clamping hole 9 is cylindrical, and the axis of the screw 7 is parallel to the axis of the clamping hole 9. The gas rotor measuring device has the advantages that the measuring rod 8 of the dial indicator clamped in the clamping hole 9 is arranged in parallel with the gas rotor 1, namely is perpendicular to the end face of the outer steel sleeve 3 which does not jump, and the jumping value of the outer steel sleeve 3 can be conveniently measured.

Specifically, as shown in fig. 4, the axis of the screw 7 and the axis of the clamping hole 9 are eccentrically arranged, and the clamping hole 9 is located right above the outer steel sleeve 3 of the bearing to be measured in a state where the housing 4 is mounted on the gas rotor 1. The micrometer gauge has the effects that the measuring rod 8 of the micrometer gauge clamped in the clamping hole 9 can be positioned right above the outer steel sleeve 3, so that the outer steel sleeve 3 can be in contact with the bottom end of the measuring rod 8 of the micrometer gauge when jumping, and the jumping value of the outer steel sleeve 3 can be conveniently measured.

Specifically, as shown in fig. 2, two locking threaded holes 10 perpendicular to the end surface are formed in the end surface of the housing 4 opposite to the fixing block 5, a bolt through hole 11 coaxial with the locking threaded hole 10 is formed in the fixing block 5, and the locking bolt 12 penetrates through the bolt through hole 11 and is in threaded connection with the locking threaded hole 10. Its effect does, through the setting of locking bolt 12, can adjust the distance between fixed block 5 and the casing 4 through twisting locking bolt 12 to the measuring stick 8 that switches the amesdial is not hard up and presss from both sides tightly in centre gripping hole 9, can adjust centre gripping hole 9 in 8 ascending positions of measuring stick axial, reaches the effect of the amesdial that adapts to different length measuring sticks 8.

Specifically, as shown in fig. 3, the housing 4 and the fixing block 5 are both provided with a semi-cylindrical surface for forming the clamping hole 9, and the locking threaded holes 10 are symmetrically arranged on both sides of the semi-cylindrical surface on the housing. The effect of the device is that the clamping force applied to the measuring rod 8 of the dial indicator in the clamping hole 9 can be uniformly distributed through the piling arrangement of the locking threaded holes 10.

Specifically, as shown in fig. 4, the housing 4 is T-shaped on the longitudinal section where the axis of the locking threaded hole 10 is located, the housing 4 includes a clamping section 13 provided with a semi-cylindrical surface, a counterweight section 14 facing away from the semi-cylindrical surface, and a supporting section 15 perpendicular to the clamping section 13, and the clamping section 13 and the counterweight section 14 are located on two sides of the supporting section 15 respectively. The balance weight section 14 is arranged, so that the stress on the left side and the right side of the support section 15 can be balanced under the condition that the measuring rod 8 of the dial indicator is arranged on the clamping section 13, and the stress is concentrated in the middle of the support section 15 as much as possible.

Specifically, as shown in fig. 4, the holding hole 9 is located outside the support section 15 in a side view of the housing 4. The effect of the dial gauge is that the contact between the support section 15 and the measuring rod 8 of the dial gauge is avoided, and the measuring effect of the dial gauge is influenced.

Specifically, as shown in fig. 4, the threaded section of the screw 7 is disposed vertically downward at the center of the bottom surface of the support section 15.

Specifically, as shown in fig. 1, the support section 15 is provided with a lightening hole 16. The weight of the shell 4 is reduced through the arrangement of the lightening holes 16 on the premise of not influencing the measuring effect of the dial indicator as much as possible, and the effect of the weight of a driving device for driving the gas rotor 1 to rotate on the rotating speed of the gas rotor 1, which is increased on the gas rotor 1 by the measuring device, is reduced.

Specifically, as shown in fig. 1, the lightening hole 16 is perpendicular to the locking threaded hole 10 and the screw 7, the housing 4 is in a cylindrical shape extending along the axial direction of the lightening hole 16, and the axis of the lightening hole 16 intersects with the axis of the screw 7. The function of the damper is to avoid the influence of the weight reduction holes 16 on the stress balance of the housing 4.

The utility model discloses a theory of operation does: firstly, a shell 4 is installed at the top end of a gas rotor 1 through a screw 7, then a locking bolt 12 penetrates through a bolt through hole 11 and is connected into a locking threaded hole 10, a fixing block 5 and the shell 4 are combined to form a clamping hole 9, a measuring rod 8 of a digital display dial indicator is deeply inserted into the clamping hole 9 from top to bottom, the bottom end of the measuring rod 8 is in contact with the top end surface of an outer steel sleeve 3, then the gas rotor 1 is rotated, the gas rotor 1 drives the digital display dial indicator clamped between the shell 4 and the fixing block 5 to rotate, because an inner steel sleeve 2 and the gas rotor 1 are relatively static when the gas rotor 1 rotates, the outer steel sleeve 3 and the gas rotor 1 rotate relatively, the outer steel sleeve 3 moves relative to the measuring rod 8, and the measuring rod 8 can measure the jitter values of all positions on the top end circumference of the outer steel sleeve 3.

When the length of the measuring rod 8 of the adopted digital display dial indicator is too long or too short, the locking bolt 12 is unscrewed, the fixing hole is pulled out in the direction away from the shell 4, the clamping hole 9 is enlarged, then the height of the clamping hole 9 on the measuring rod 8 is adjusted, the bottom end of the measuring rod 8 is just in contact with the top end of the outer steel sleeve 3, then the locking bolt 12 is screwed down, and the measuring rod 8 is tightly clamped in the clamping hole 9.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that any simple modification, equivalent replacement, and improvement made to the above embodiments, within the spirit and principle of the present invention, all still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a measuring device that beats for gas turbine starter rotor bearing for gas rotor (1) that has screw hole (6) on the end face center installs the bearing that awaits measuring on gas rotor (1) axle journal, and the bearing that awaits measuring has outer steel bushing (3) and interior steel bushing (2), its characterized in that: the measuring device comprises a shell (4) and a fixed block (5) which are connected with each other, wherein a screw (7) used for being connected with a threaded hole (6) is arranged on the bottom surface of the shell (4), and the shell (4) is connected with the fixed block (5) to form a clamping hole (9) used for clamping a measuring rod (8) of a dial indicator.

2. The runout measurement device for a gas turbine starter rotor bearing according to claim 1, characterized in that: the clamping hole (9) is cylindrical, and the axis of the screw (7) is parallel to the axis of the clamping hole (9).

3. The runout measurement device for a gas turbine starter rotor bearing according to claim 2, characterized in that: the axis of the screw (7) and the axis of the clamping hole (9) are eccentrically arranged, and the clamping hole (9) is positioned right above the outer steel sleeve (3) of the bearing (2) to be tested in the state that the shell (4) is installed on the gas rotor (1).

4. The runout measurement device for a gas turbine starter rotor bearing according to claim 3, characterized in that: the shell (4) is provided with at least one locking threaded hole (10) which is perpendicular to the end face and is arranged on the end face opposite to the fixed block (5), the fixed block (5) is provided with a bolt through hole (11) which is coaxial with the locking threaded hole (10), and the shell further comprises a locking bolt (12) which penetrates through the bolt through hole (11) and is in threaded connection with the locking threaded hole (10).

5. The runout measurement device for a gas turbine starter rotor bearing according to claim 4, characterized in that: and the shell (4) and the fixing block (5) are respectively provided with a semi-cylindrical surface for forming a clamping hole (9), and the locking threaded holes (10) are symmetrically arranged at two sides of the semi-cylindrical surface on the shell.

6. The runout measurement device for a gas turbine starter rotor bearing according to claim 5, characterized in that: casing (4) are T style of calligraphy on the longitudinal section at locking screw hole (10) axis place, and casing (4) are including centre gripping section (13) that are equipped with the semi-cylindrical surface and counter weight section (14) and support section (15) with centre gripping section (13) perpendicular setting dorsad semi-cylindrical surface, and centre gripping section (13) and counter weight section (14) are located the both sides of supporting section (15) respectively.

7. The runout measurement device for a gas turbine starter rotor bearing according to claim 6, characterized in that: the clamping opening (9) is located outside the support section (15) in a side view of the housing (4).

8. The runout measurement device for a gas turbine starter rotor bearing according to claim 7, characterized in that: the thread section of the screw (7) is downwards vertically arranged at the center of the bottom surface of the support section (15).

9. The run-out measurement apparatus for a gas turbine starter rotor bearing of claim 8, wherein: and a lightening hole (16) is formed in the support section (15).

10. The runout measurement device for a gas turbine starter rotor bearing according to claim 9, characterized in that: the lightening holes (16) are perpendicular to the locking threaded holes (10) and the screws (7), and the axes of the lightening holes (16) are intersected with the axes of the screws (7).