CN212106048U

CN212106048U - Carbon deposit removing tool

Info

Publication number: CN212106048U
Application number: CN201922271452.4U
Authority: CN
Inventors: 李军; 马云涛; 李强
Original assignee: Avic Shijiazhuang Aircraft Industry Group Corp ltd
Current assignee: Avic Shijiazhuang Aircraft Industry Group Corp ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-12-08
Anticipated expiration: 2029-12-17

Abstract

The utility model provides a remove carbon deposit instrument convenient to clear away carbon deposit in aircraft engine exhaust valve cover. The instrument includes handheld portion, reciprocating mechanism, rotary rod, motor and removes the carbon unit, mount and rotary device one end elastic connection, motor drive rotary rod and reciprocating mechanism, reciprocating mechanism one end is fixed in handheld portion, it sets up on rotary device to remove the carbon unit. The utility model discloses a motor drives the rotary rod rotatory, and the motor drives reciprocating mechanism to the messenger removes the carbon unit rotation and reciprocating motion, realizes removing the carbon deposit cleaning work to the exhaust valve cover, can avoid manual getting rid of the carbon deposit thoroughly not, and clear carbon deposit under the condition of not dismantling engine cylinder and connecting part, the utility model is simple in operation, convenient to use greatly improves the work efficiency who removes the carbon deposit.

Description

Carbon deposit removing tool

Technical Field

The utility model relates to a to piston engine's in the aircraft maintenance and maintenance technical field, concretely relates to remove carbon deposit instrument.

Background

For piston engine airplanes used in China, the flying accidents of instantaneous engine shaking faults or lubricating oil leakage frequently occur, and the phenomenon of exhaust valve blockage is mostly found through inspection. The reason for the exhaust valve blocking phenomenon is that colloid carbon deposition exists near an exhaust valve rod in an exhaust valve sleeve of the engine, so that the fit clearance between the exhaust valve rod and the valve guide sleeve is reduced or the clearance disappears; meanwhile, the No. 20 aviation lubricating oil used in China has a lot of impurities and high carbon content, and a dust removal device is not adopted, so that hard carbon deposits enter a valve guide sleeve to cause valve retardation.

In conclusion, the aircraft manufacturers propose in the detailed routine maintenance rules that when the engine is used for about 200 hours, the cylinders above the horizontal line need to perform carbon deposition removal work on the exhaust valve. And when the shaking fault cannot be eliminated after the carbon deposition is removed, the cylinders need to be detached one by one, exhaust valves are decomposed and checked, the carbon deposition is thoroughly cleaned, and parts cannot be damaged.

At present, the accumulated carbon removal of the exhaust valve sleeve is performed by manual operation, and the exhaust valve sleeve is polished or completely removed and cleaned by winding sand paper on a handle under the condition of not removing an air cylinder. The first maintenance method has the disadvantages of inconvenient operation due to narrow space and uneven force application; the second maintenance method is time consuming. The current working modes all bring a large amount of complicated work for maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a simple structure need not disassemble the engine completely, can clear up the carbon deposit instrument that removes of carbon deposit in the engine push valve cover fast.

In order to solve the above problems, the utility model adopts the following technical scheme:

a remove carbon deposit instrument which characterized in that: the device comprises a handheld part, a reciprocating mechanism fixedly connected with the handheld part, a rotating rod, a motor driving an output shaft to be fixedly connected with the rotating rod, and a carbon removing unit arranged on the rotating rod;

set up on the handheld portion with the parallel guided way of rotary rod and along the reciprocal gliding bearing housing panel of guided way, the rotary rod with the bearing housing panel rotates to be connected.

The carbon removing unit is driven by the motor to rotate, and meanwhile, the reciprocating mechanism is driven, so that the reciprocating mechanism and the carbon removing unit on the rotating rod can reciprocate.

Further: the reciprocating mechanism comprises a worm in transmission connection with the motor and a worm wheel meshed with the worm.

Further: the reciprocating mechanism further comprises a fixed shaft hinged on the worm wheel, a shaft seat fixedly connected with the fixed shaft and a connecting rod with one end hinged on the worm wheel.

The other end of the connecting rod is hinged with the handheld portion, the shaft seat is fixedly connected with the bearing sleeve plate, and the hinged point of the worm wheel and the connecting rod is far away from the center of the worm wheel.

Further: the rotary rod comprises a rotary shaft and a push plate, wherein the rotary shaft is in transmission connection with the other end of the motor, and the push plate is hinged to the rotary shaft.

Further: the carbon removal unit comprises a fixed sleeve fixedly connected to the rotating shaft, a spring with one end arranged on the outer surface of the fixed sleeve, and a carbon removal body fixedly connected to the other end of the spring.

Further: the carbon removal unit further comprises an adjusting block arranged at the other end of the spring, and a carbon removal body fixedly connected to the outer side of the adjusting block.

Further, the reciprocating mechanism also comprises a gear fixedly connected to the worm wheel, a rack meshed with the gear and a slide rail connected with the rack in a sliding manner;

the rack is fixedly connected with the handheld part;

the slide rail is fixedly connected to the handheld portion.

Further: the handheld portion further comprises a fixing plate fixed on the handheld portion, a sliding groove seat fixedly connected with the fixing plate and a protective cover clamped with the fixing plate.

Further: the guard shield still includes the handle, the handle with guard shield fixed connection.

Further: the handle also includes a switch in communication with the motor.

Compared with the prior art the utility model discloses positive effect as follows:

the utility model discloses a use the motor to drive the rotary rod, and through the worm of reciprocating mechanism and worm wheel meshing, the connecting rod of worm wheel terminal surface eccentric hinge joint and the handheld portion of fixed connecting rod realize can reciprocating motion when the rotary motion of carbon removal unit, the carbon removal body is even and continuous contact in the exhaust cover, and through the fine adjustment of the spring in the carbon removal unit and adjusting block, make the carbon removal body feed the clearance to the carbon deposition step by step, because the work of removing the carbon deposition is cycle and a large amount of nature work, a large amount of manual labor can be practiced thrift in the use of motor;

because of the constant output of the speed reducing motor, the acting force applied to the surface of the carbon removing unit is more balanced than the manual operation;

because the carbon removal unit rotates and reciprocates simultaneously, the carbon removal body is in full contact with the inner hole of the air valve sleeve, and carbon deposition can be removed in all directions compared with manual operation.

The worm gear and worm and crank sliding block mechanism is adopted, so that the use of power elements is reduced, the carbon removing body can rotate and reciprocate simultaneously, the requirement of small operation space in an engine is met, and the working efficiency can be improved.

This use neotype use has avoided existing the carbon deposit that does not clear away promptly, can avoid removing the carbon again and do not cause the cylinder and part dismantlement to wash heavy work one by one for the carbon deposit work that removes in the aircraft maintenance is more convenient, reliable, improves work efficiency.

Drawings

Fig. 1 is a front view of the general structure of the present invention.

Fig. 2 is a general structure plan view of the present invention.

Fig. 3 is a partial schematic view of an adjusting unit according to the present invention.

Fig. 4 is a front view of embodiment 2 of the present invention.

In the figure: 1, a motor; 2, rotating a shaft; 3, adjusting the block; 4, a spring; 5 removing the carbon body; 6, fixing a sleeve; 7, pushing a plate; 8 bearing sleeve plate; 9, a chute seat; 10 fixing a frame; 11 shaft seats; 12 connecting rods; 13 a worm gear; 14 fixing the shaft; 15 a shield; 16 worm screws; 17 a handle; 18 a switch; 19 guide rails.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings illustrating embodiments.

In order to make the related technical solutions in the embodiments of the present application more clearly and completely described, the following describes the implementation of the present application with reference to the accompanying drawings. It will be apparent that the described embodiments are merely illustrative and are not intended to limit the application and its applications or uses in any way. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present disclosure.

Example 1

As shown in fig. 1 and 2, the utility model provides a carbon deposition removing tool, which comprises a hand-held part, a reciprocating mechanism fixedly connected with the hand-held part, a rotary rod, a motor 1 fixedly connected with a driving output shaft and the rotary rod, and a carbon deposition removing unit arranged on the rotary rod;

a guide rail 19 parallel to the rotating rod and a bearing sleeve plate 8 sliding back and forth along the guide rail 19 are arranged on the handheld part;

the handheld part also comprises a fixed frame 10, a sliding groove seat 9 arranged at the lower end of the fixed frame 10 and a shield 15 clamped with the fixed frame 10; the bearing sleeve plate 8 is connected with the sliding groove seat 9 in a sliding mode, the sliding groove seat 9 is the other guide structure of the guide rail 19, and the two structures can be unified or are practical together.

The reciprocating mechanism comprises a worm wheel 13, a worm 16 meshed with the worm wheel 13 and a connecting rod 12 with one end hinged on the worm wheel 13, the hinged point of the worm wheel 13 and the connecting rod 12 is far away from the center of the worm wheel 13, the bearing sleeve plate 8 is fixed on the shaft seat 11 through a bolt, and the fixing shaft 14 is fixed on the shaft seat 11 through a bolt.

The worm 16 is arranged at one end of the motor 1;

the worm 16 is in transmission connection with the motor 1;

the other end of the connecting rod 12 is hinged with the chute seat 9;

the rotary rod comprises a rotary shaft 2 connected with the other end of the motor 1 in a transmission manner and a push plate 7 hinged with the rotary shaft.

As shown in fig. 1 and 3, the decarbonizing unit includes a fixing sleeve 6 fixedly connected to the rotating shaft 2, a spring 4 having one end disposed on an outer surface of the fixing sleeve 6, an adjusting block 3 disposed at the other end of the spring 4, and a decarbonizing body 5 fixedly connected to an outer side of the adjusting block 3.

The worm 16 is in flat key connection with the left side of the motor 1, and the rotating shaft 2 is in flat key connection with the right side of the motor 1; the left end mounting surface of the motor 1 is fixedly connected with a bearing sleeve plate 8, the left end of the bearing sleeve plate 8 is fixedly connected with a shaft seat 11, a fixed shaft 14 is fixed with the shaft seat 11 through a bolt, a deep groove ball bearing is arranged on the shaft seat 11, and a worm wheel 13 is rotatably connected to the shaft seat 11 through the deep groove ball bearing; one end of a connecting rod 12 is hinged to the end face of a worm wheel 13, the rotation connection point of the worm wheel 13 and the connecting rod 12 is far away from the axis of the worm wheel 13, the other end of the connecting rod 12 is hinged to a sliding groove seat 9, the lower end of a bearing sleeve plate 8 slides in the sliding groove seat 9, the sliding groove seat 9 is fixed at the bottom end of a fixing frame 10 through bolts, the fixing frame 10 is of a U-shaped structure, a guide rail 19 is arranged at the upper end of the fixing frame 10, one end of the guide rail 19 is fixedly connected to the left end of the fixing frame 10, the other end of the guide rail 19 is fixedly connected to the right end of the fixing frame 10, the bearing sleeve plate 8 slides on the guide rod 19, the lower surface of the fixing frame 10 is clamped.

The right end of the rotating shaft 2 is fixedly connected with a

fixed sleeve

6, 8 blind holes are uniformly formed in the circumferential surface of the fixed sleeve 6, a spring 4 is arranged in each blind hole, a regulating block 3 is movably connected to the spring 4, the section of the regulating block 3 is a T-shaped block, the wide end of the regulating block is embedded into the blind hole, the narrow end of the regulating block can protrude out of the blind hole in the fixed sleeve 6, the end face of the protruding end of the regulating block 3 is fixedly connected with a decarbonizing body 5, and a push plate 7.

The using method comprises the following steps:

operating personnel opens the engine guard shield for the first time, lifts the valve spring dog on engine air pushing valve upper portion off, holds the utility model discloses in the handle will remove the carbon body and push into the exhaust valve, push up exhaust valve pole up end when the push-plate to end stops on the exhaust valve cover up end. Press the button 18 on the handle 17 on the right side this moment, gear motor 1 starts, drive worm 16 and pivot 2 and rotate, pivot 2 drives fixed cover 6 in the decarbonization unit rotatory, fixed cover 6 drives the decarbonization body 5 that removes in the decarbonization unit and rotates, rotate the decarbonization, because the engine is inside to push away the valve housing and push away valve lever clearance little, for the cooperation use, if it is too big to remove the valve housing pressure that pushes away relatively of the decarbonization body 5, and under the condition that operating personnel can't see the effect of polishing again, decarbonization body 5 very easily enlarges the hole size that pushes away the valve housing, can influence engine performance, the utility model discloses add spring 4, adjusting block 3 as the adjustment of the pressure when removing the decarbonization body 5 and polishing, reduce maintenance work and cause the influence of machine performance.

When the speed reducing motor 1 is started, the worm 16 and the worm wheel 13 are in meshing transmission to drive the worm wheel 13 to rotate, the rotating axis of the worm wheel 13 is perpendicular to the rotating center of the worm 16, the worm wheel 13 is provided with the connecting rod 12 in eccentric connection, the rotating connection point of the worm wheel 13 and the connecting rod 12 performs circular motion around the center of the worm wheel 13, the other end of the connecting rod 12 is fixedly connected to the chute seat 9, the lower end of the bearing sleeve plate 8 slides in the chute seat 9, the upper end of the bearing sleeve plate 8 slides on the guide rail 19, and the worm wheel 13 is fixedly connected to the bearing sleeve plate 8, so that when the hinge point at one end of the connecting rod 12 rotates along with the rotating connection point of the worm wheel 13, the hinge point at the other end of the connecting rod 12 drives the reciprocating mechanism, the rotating rod and the carbon removing unit fixed.

Example 2

As shown in fig. 4, the same as embodiment 1, except that the reciprocating mechanism of the tool for removing carbon deposition includes a worm gear 13, a gear 20 fixedly connected with the worm gear 13, a rack 21 in transmission connection with the gear 20, and a slide rail 22 in sliding connection with the rack 21, the rack 21 is fixedly connected to the left end of the fixed frame 10, the worm gear 13 is concentric with the gear 20, and the slide rail 22 is fixedly connected to the fixed frame 10; and a control system, which can be a single chip microcomputer or a programmable controller, is added to control the regular and positive rotation of the motor 1.

The working method comprises the following steps: an operator starts a button, and the motor 1 is switched between positive and negative rotation at regular time under the control of the programmable controller. In the figure of the embodiment, the worm is in left-handed rotation, when the motor 1 rotates clockwise, the decarbonization unit fixed on the rotating shaft 2 rotates clockwise, the worm 16 drives the worm wheel 13 to rotate anticlockwise, the gear 20 and the worm wheel 13 rotate anticlockwise, the gear 20 and the rack 21 are in meshing transmission, and the rack 21 drives the reciprocating mechanism, the rotating rod and the decarbonization unit to move leftwards; when the motor 1 rotates anticlockwise, the carbon removal unit fixed on the rotating shaft 2 rotates anticlockwise, the worm 16 drives the worm wheel 13 to rotate clockwise, the gear 20 and the worm wheel 13 rotate clockwise, the gear 20 and the rack 21 are in meshed transmission, and the rack 21 drives the reciprocating mechanism, the rotating rod and the carbon removal unit to move rightwards, so that the carbon removal unit rotates and reciprocates.

Claims

1. A remove carbon deposit instrument which characterized in that: comprises a hand-held part, a reciprocating mechanism fixedly connected with the hand-held part, a rotating rod, a motor (1) driving an output shaft to be fixedly connected with the rotating rod, and a carbon removal unit arranged on the rotating rod;

the handheld part is provided with a guide rail (19) parallel to the rotating rod and a bearing sleeve plate (8) sliding back and forth along the guide rail (19);

the rotating rod is rotationally connected with the bearing sleeve plate (8).

2. A soot deposition tool as claimed in claim 1, wherein:

the reciprocating mechanism comprises a worm (16) in transmission connection with the motor (1) and a worm wheel (13) meshed with the worm (16).

3. A soot deposition tool as claimed in claim 2, wherein:

the reciprocating mechanism also comprises a fixed shaft (14) hinged on the worm wheel (13), a shaft seat (11) fixedly connected with the fixed shaft and a connecting rod (12) with one end hinged on the worm wheel (13);

the other end of the connecting rod (12) is hinged with the handheld portion, the shaft seat (11) is fixedly connected with the bearing sleeve plate (8), and a hinged point of the worm wheel (13) and the connecting rod (12) is far away from the center of the worm wheel (13).

4. A soot deposition tool as claimed in claim 1, wherein:

the rotary rod comprises a rotary shaft (2) connected with the other end of the motor (1) in a transmission manner and a push plate (7) hinged with the rotary shaft (2).

5. A soot deposition tool as claimed in claim 4, wherein:

the carbon removal unit comprises a fixed sleeve (6) fixedly connected to the rotating shaft (2), a spring (4) with one end arranged on the outer surface of the fixed sleeve (6), and a carbon removal body (5) fixedly connected to the other end of the spring (4).

6. A soot deposition tool as claimed in claim 4, wherein:

the carbon removing unit further comprises an adjusting block (3) arranged at the other end of the spring (4), and a carbon removing body (5) fixedly connected to the outer side of the adjusting block (3).

7. A soot deposition tool as claimed in claim 2, wherein:

the reciprocating mechanism further comprises a gear (20) fixedly connected to the worm wheel (13), a rack (21) meshed with the gear (20) and a sliding rail (22) connected with the rack (21) in a sliding manner;

the rack (21) is fixedly connected with the handheld part; the slide rail (22) is fixedly connected to the hand-held portion.

8. A soot deposition tool as claimed in claim 1, wherein:

the handheld portion comprises a fixing plate (10) fixed on the handheld portion, a sliding groove seat (9) fixedly connected with the fixing plate (10) and a protective cover (15) clamped with the fixing plate (10).

9. A soot deposition tool as in claim 8 wherein:

the protective cover (15) comprises a handle (17), and the handle (17) is fixedly connected with the protective cover (15).

10. A soot deposition tool as claimed in claim 9, wherein:

the handle (17) further comprises a switch (18) in communication with the motor (1).