CN111331543A

CN111331543A - Narrow and small space nut installation device

Info

Publication number: CN111331543A
Application number: CN201911140025.0A
Authority: CN
Inventors: 范秀华; 赵曦; 赫亮; 程国玉; 任龙
Original assignee: AECC Shenyang Liming Aero Engine Co Ltd
Current assignee: AECC Shenyang Liming Aero Engine Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-06-26
Anticipated expiration: 2039-11-20
Also published as: CN111331543B

Abstract

The invention discloses a nut mounting device in a narrow space, which comprises a rotating mechanism and an adjusting mechanism, wherein the rotating mechanism comprises a movable seat and a fixed seat; the adjusting mechanism comprises a fine adjustment disc, and the fine adjustment disc is connected with the connecting pipe. And through adopting the belt pulley, belt drive mode, use the installation dwang to twist reverse the input belt pulley, through belt drive, it is rotatory to drive the nut support, and utilize the tension of spring to hold up the nut, and then install the nut to the bolt, the device return, use and place the nut pole, install next nut to the nut support, there is the locating hole on the utilization positioning disk, carry out the index rotation with the rolling disc, and then accomplish the installation work of nut in proper order, narrow and small space can be realized to the device, the nut installation of position can not be looked at visually, it is narrow and small to have solved operating space, the problem that often used frock is difficult directly to realize, solve narrow and small space nut installation problem.

Description

Narrow and small space nut installation device

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a nut mounting device in a narrow space.

Background

At present, in the field of engine assembly in China, manual assembly is the most important working mode, and with the continuous improvement of the performance of an engine, the structural design of the engine is continuously optimized, and the limitation of the manual assembly is increasingly prominent. The compressor disks of certain type of engine are connected through bolts and nuts, the operation space is narrow, and the requirements of common tools are difficult to directly realize. The inner diameter of the disc with the length of about 600mm is only 114mm, the arm of a common person is about 130mm, and the nut is difficult to be directly taken by hands, so a set of special nut installation device is needed.

Disclosure of Invention

Aiming at solving the problem of nut installation in a narrow space, the invention provides a nut installation device in the narrow space, aiming at bolt and nut connection between compressor disks of a certain type of engine, wherein a nut support is designed into a folding structure so as to be capable of being lifted into a cavity to act, a belt pulley and belt transmission mode is adopted to drive the nut support to rotate, the nut support is lifted by utilizing the tension of a spring, and then the nut is installed on a bolt. The technical scheme adopted by the invention is as follows:

a nut mounting device in a narrow space comprises a rotating mechanism and an adjusting mechanism, wherein the rotating mechanism comprises a movable seat and a fixed seat, the movable seat is connected with the fixed seat through a rotating shaft, and the fixed seat is fixedly connected with a connecting pipe through threads; the adjusting mechanism comprises a fine adjustment disc, and the fine adjustment disc is connected with the connecting pipe.

The rotating mechanism further comprises a group I belt, a belt wheel and a nut support, wherein the nut support, the group I belt and the belt wheel are arranged on the movable seat to enable the nut support to rotate along with the belt wheel.

The rotating mechanism further comprises a rotating shaft and a steel wire rope, the rotating shaft winds the steel wire rope, the movable seat fixes the steel wire rope through the pressing sheet, the rotating shaft rotates to rotate the movable seat to one side to rotate to a working position, and the rotating shaft rotates to rotate the movable seat to the other side to rotate to a withdrawing position.

Slewing mechanism still includes II group's belts, band pulley, dwang, the dwang can drive II groups of belts, band pulley rotations, and II groups of belts, band pulley drive I group's belt, band pulley rotation, and then the dwang can make the nut hold in the palm the rotation.

The rotating mechanism further comprises a guide sleeve and a positioning disc, the guide sleeve is connected with the positioning disc through a screw, and the positioning disc is fixedly connected with a disc assembly needing nut installation through a bolt and a nut; the positioning disc is provided with positioning holes, and the number of the circumferential positioning holes is the same as that of the nuts needing to be installed.

The rotating mechanism further comprises a handle and a rotating disc, the rotating disc is positioned with the vacant holes in the positioning disc through the quick locking bolts, and the handle is pushed to enable the rotating disc to sequentially position the positioning holes of the positioning disc so as to determine the installation position of the nut.

The rotating mechanism further comprises a supporting plate and a spring, the supporting plate compresses the spring through a pressing wheel, the supporting plate is positioned with the rotating plate through two quick locking bolts, the positioning is the position where a nut is installed, and the position of the rotation degree of the supporting plate is the position where a nut rod is placed on the nut; the lowest end of the nut rod is provided with a thread, and the size of the thread is the same as that of the nut.

The adjusting mechanism further comprises a fine adjustment button, the fine adjustment button is meshed with the fine adjustment disc gear, the fine adjustment button is rotated, the fine adjustment disc drives the connecting pipe to rotate, and the position of the nut and the bolt which need to be installed is adjusted.

The invention has the beneficial effects that: the invention provides a nut installation device in a narrow space, which is characterized in that an input end belt pulley is twisted by using an installation rotating rod through a belt pulley and belt transmission mode, a nut support is driven to rotate through belt transmission, the nut support is supported up by using the tension of a spring, a nut is further installed on a bolt, the device returns, the next nut is installed on the nut support by using a nut placing rod, a positioning hole is formed in a positioning disc, the rotating disc is subjected to indexing rotation, and the installation work of the nut is further completed in sequence.

Drawings

FIG. 1 is a cross-sectional view of the overall construction of the present invention;

FIG. 2 is a top view of the overall structure of the present invention;

FIG. 3 is a sectional view of the overall structure A-A of FIG. 2;

FIG. 4 is a cross-sectional view of the puck structure of FIG. 2B-B;

FIG. 5 is a cross-sectional view of the locking screw structure of FIG. 1;

FIG. 6 is an initial state diagram of the fixed seat and the movable seat when the device of the present invention is installed.

Description of the symbols: 1-a fixed seat; 2-a movable seat; 3-a rotating shaft; 4-nut support; 5-I group of belt and belt wheel; 6-II groups of belts and belt wheels; 7-guide sleeve; 8-bolt; 9-a nut; 10-positioning plate; 11-a rotating disc; 12-quick locking bolt; 13-a handle; 14-rotating rods; 15-a support disk; 16-a spring; 17-placing a nut rod; 18-a guide tube; 19-fine tuning of the disc; 20-fine tuning; 21-connecting pipe; 22-a wrench; 23-quick locking bolt; 24-axis; 25-a pinch roller; 26-a nut; 27-a rotating shaft; 28-locking screw.

Detailed Description

In order that the invention may be more clearly understood, the invention is described in further detail with reference to the accompanying drawings.

A small space nut mounting apparatus provided according to an embodiment of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the invention is a nut mounting device in a narrow space, which comprises a rotating mechanism, an adjusting mechanism, a movable seat 2 and a fixed seat 1, wherein the movable seat 2 is connected with the fixed seat 1 through a rotating shaft 3, and the fixed seat 1 is fixedly connected with a connecting pipe 21 through threads; the adjusting mechanism comprises a fine adjustment disc 19, and the fine adjustment disc 19 is connected with a connecting pipe 21.

The slewing mechanism also comprises a group I belt, a belt wheel 5 and a nut support 4, wherein the nut support 4, the group I belt and the belt wheel 5 are arranged on the movable seat 2 to enable the nut support 4 to rotate along with the belt wheel.

The rotating mechanism further comprises a rotating shaft 27 and a steel wire rope, the rotating shaft 27 winds the steel wire rope, the movable seat 2 fixes the steel wire rope through a pressing sheet, the rotating shaft 27 rotates to rotate the movable seat 2 to one side to rotate to a working position, and the rotating shaft 27 rotates to rotate the movable seat 2 to the other side to rotate to a withdrawing position.

The rotating mechanism further comprises a group II of belts, belt wheels 6 and a rotating rod 14, the rotating rod 14 can drive the group II of belts and the belt wheels 6 to rotate, the group II of belts and the belt wheels 6 drive the group I of belts and the belt wheels 5 to rotate, and the rotating rod 14 can drive the nut support 4 to rotate;

the rotating mechanism further comprises a guide sleeve 7 and a positioning disc 10, the guide sleeve 7 is connected with the positioning disc 10 through a screw, and the positioning disc 10 is fixedly connected with a disc assembly needing nut installation through a bolt 8 and a nut 9; the positioning disc 10 is provided with positioning holes, and the number of the circumferential positioning holes is the same as that of nuts needing to be installed.

The rotating mechanism further comprises a handle 13 and a rotating disc 11, the rotating disc 11 is positioned with a vacant hole in the positioning disc 10 through the quick locking bolt 12, and the handle 13 is pushed to enable the rotating disc 11 to sequentially position positioning holes of the positioning disc 10 so as to determine the installation position of the nut.

The rotating mechanism further comprises a supporting plate 15 and a spring 16, the supporting plate 15 compresses the spring 16 through a pressing wheel 25, the supporting plate 15 is positioned with the rotating plate 11 through two quick locking bolts 23, the positioning is the position where a nut is installed, and the position where the supporting plate 15 rotates 180 degrees is the position where the nut is placed on a nut rod 17; the lowermost end of the nut stem 17 is threaded, the thread being the same size as the nut.

The adjusting mechanism further comprises a fine adjustment button 20, the fine adjustment button 20 is meshed with the fine adjustment disc 19 through a gear, and the fine adjustment button 20 is rotated to enable the fine adjustment disc 19 to drive the connecting pipe 21 to rotate, so that the position of a nut and a bolt which need to be installed is adjusted.

The installation steps of the invention are as follows:

after the nut mounting device is adjusted to an initial state, the nut mounting device is placed in a central hole of a part to be mounted through a guide sleeve 7, fixed with a mounting edge at the top end of a disc neck through a positioning disc 10 and connected through a bolt 8 and a nut 9.

Secondly, the nut is placed on the nut bracket 4 through the guide tube 18 by placing the nut rod 17, and the nut rod 17 is taken out.

Thirdly, the supporting plate 15 drives the connecting pipe 21 and the rotating fixed seat 2 and the movable seat 1 connected with the connecting pipe to rotate 180 degrees by pushing the wrench 22, and the fast locking bolt 23 is inserted for positioning.

Fourthly, the rotating shaft 27 is rotated to rotate the movable seat 1 to a working position through the wound steel wire rope, and the locking screw 28 is screwed down.

Fifthly, the fine adjustment button 20 is rotated to enable the fine adjustment disc 19 to drive the connecting pipe 21 and the rotary fixed seat 2 and the movable seat 1 which are connected with the connecting pipe 21 to carry out angle fine adjustment so that the nut in the nut support 4 is aligned with the bolt.

Sixthly, the pressing wheel 25 is rotated to the outside of the supporting plate 15 through the shaft 24 by rotating the nut 26, so that the spring 16 is in a free state, and the nut in the nut support 4 always has an upward supporting force.

Seventhly, rotatory dwang 14 through II group belts, band pulley 6, I group belts, band pulley 5 drive the nut and hold in the palm 4 rotations, install the nut on the bolt.

Eighthly, pressing the supporting plate 15 to press the pressing wheel 25 on the supporting plate 15 to tighten the nut 26, so that the nut support 4 is separated from the nut.

And ninthly, loosening the locking screw 28, rotating the rotating shaft 27 to rotate the movable seat 1 to the retraction position through the wound steel wire rope.

And pulling out the quick locking bolt 23, pushing the wrench 22 to enable the supporting plate 15 to drive the connecting pipe 21 and the rotary fixed seat 2 and the movable seat 1 connected with the connecting pipe to rotate 180 degrees, inserting and positioning the quick locking bolt 23, and returning to the initial position.

Eleven, pulling out the quick locking bolt 12, pushing the handle 13 to rotate the components except the fixed seat 10 and the guide sleeve 7 to the next position where the nut needs to be installed, and inserting the quick locking bolt 12 for positioning.

And twelve, repeating the

steps

2, 3, 4, 6, 7, 8, 9, 10 and 11 to complete the installation of the nut on the whole circumference in sequence, returning to the initial position and detaching the whole device.

Claims

1. The utility model provides a narrow and small space nut installation device which characterized in that: the device comprises a rotating mechanism and an adjusting mechanism, wherein the rotating mechanism comprises a movable seat (2) and a fixed seat (1), the movable seat (2) is connected with the fixed seat (1) through a rotating shaft 3, and the fixed seat (1) is fixedly connected with a connecting pipe (21) through threads; the adjusting mechanism comprises a fine adjustment disc (19), and the fine adjustment disc (19) is connected with a connecting pipe (21).

2. The nut mounting device for the narrow space according to claim 1, wherein the rotating mechanism further comprises a group I belt, a belt wheel (5) and a nut support (4), and the nut support (4) and the group I belt and the belt wheel (5) are mounted on the movable seat (2) to enable the nut support (4) to rotate along with the belt wheel.

3. The narrow space nut installation device according to claim 1, characterized in that the rotating mechanism further comprises a rotating shaft (28) and a steel wire rope (27), the rotating shaft (28) winds the steel wire rope (27), the movable seat (2) fixes the steel wire rope (27) through a pressing sheet, the rotating shaft (28) rotates to one side to rotate the movable seat (2) to a working position, and the rotating shaft (28) rotates to the other side to rotate the movable seat (2) to a withdrawing position.

4. The narrow and small space nut installation device of claim 1, characterized in that, slewing mechanism still includes II groups of belt, band pulley (6), dwang (14) can drive II groups of belt, band pulley (6) and rotate, and II groups of belt, band pulley (6) drive I groups of belt, band pulley (5) and rotate, and then dwang (14) can make nut hold in the palm (4) and rotate.

5. The nut mounting device in the narrow space according to claim 1, wherein the rotating mechanism further comprises a guide sleeve (7) and a positioning disc (10), the guide sleeve (7) is connected with the positioning disc (10) through a screw, and the positioning disc (10) is fixedly connected with a disc assembly needing nut mounting through a bolt (8) and a nut (9); the positioning disc (10) is provided with positioning holes, and the number of the circumferential positioning holes is the same as that of the nuts needing to be installed.

6. The narrow space nut mounting device as claimed in claim 1, wherein the rotating mechanism further comprises a handle (13) and a rotating disc (11), the rotating disc (11) is positioned with a vacant hole in the positioning disc (10) through the quick locking bolt (12), and the handle (13) is pushed to enable the rotating disc (11) to sequentially position the positioning holes of the positioning disc (10) so as to determine the mounting position of the nut.

7. The narrow space nut installation device according to claim 1, characterized in that the rotating mechanism further comprises a support plate (15) and a spring (16), the support plate (15) compresses the spring (16) through a pressing wheel (25), the support plate (15) is positioned with the rotating plate (11) through two quick locking bolts (23), the positioning is the nut installation position, and the position of 180 degrees rotation of the support plate (15) is the position of the nut rod (17) for placing the nut; the lowest end of the nut rod (17) is provided with a thread, and the size of the thread is the same as that of the nut.

8. The narrow space nut mounting device according to claim 1, characterized in that the adjusting mechanism further comprises a fine adjustment knob (20), the fine adjustment knob (20) is in gear engagement with the fine adjustment disc (19), and the fine adjustment knob (20) is rotated to enable the fine adjustment disc (19) to drive the connecting pipe (21) to rotate.