CN209887436U - Camshaft gear locking tool - Google Patents
Camshaft gear locking tool Download PDFInfo
- Publication number
- CN209887436U CN209887436U CN201920351613.8U CN201920351613U CN209887436U CN 209887436 U CN209887436 U CN 209887436U CN 201920351613 U CN201920351613 U CN 201920351613U CN 209887436 U CN209887436 U CN 209887436U
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- rod section
- base
- camshaft
- positioning
- locking tool
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Abstract
The utility model discloses a camshaft gear locking tool, the end parts of two camshaft gears of an engine are both provided with positioning holes, the locking tool comprises a base, an adjusting screw and an adjusting block; one end of the adjusting screw rod is connected with the base in a rotating fit mode, and the other end of the adjusting screw rod penetrates through the adjusting block and is in threaded connection with the adjusting block; two positioning pins are arranged on the adjusting block, and the center distance of the two positioning pins is not smaller than the minimum hole distance of the two positioning holes; and the two positioning pins are respectively inserted into the corresponding positioning holes and used for positioning and locking the two camshaft gears. The utility model discloses cam shaft gear locking instrument simple structure, the specificity is strong, can fix a position locking to two camshaft gears fast, labour saving and time saving, the follow-up maintenance of the engine of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of maintenance assembly auxiliary fixtures, especially, relate to a cam shaft gear locking instrument who uses when being applicable to engine maintenance.
Background
The camshaft is a component in a piston engine and functions to control the opening and closing action of the valves, wherein a dual overhead camshaft is more common; because the camshaft of the engine and the crankshaft are not on the same axis, a transmission system is required to be connected between the camshaft and the crankshaft, and the camshaft gear is used for driving the air inlet camshaft and the air outlet camshaft to rotate, so that the valve rocker arm moves up and down to complete the air inlet action and the air outlet action.
When an engine is maintained, a camshaft gear is often required to be positioned and locked; although the tools for positioning and locking the gear are many, most of the tools are not suitable for use; even if some tools can position and lock the camshaft gear, the structure is complex and the specificity is poor, and the time and the labor are wasted when the tool is used.
SUMMERY OF THE UTILITY MODEL
Aim at overcoming exist among the above-mentioned prior art not enough, the utility model provides a technical problem be, provide a simple structure and camshaft gear locking instrument that the specificity is strong, can fix a position locking, the follow-up maintenance of the engine of being convenient for to two camshaft gears fast.
The technical scheme adopted by the utility model for solving the technical problems is to provide a camshaft gear locking tool, wherein the ends of the camshaft gears of the two engines are both provided with positioning holes, and the locking tool comprises a base, an adjusting screw rod and an adjusting block;
one end of the adjusting screw rod is connected with the base in a rotating fit mode, and the other end of the adjusting screw rod penetrates through the adjusting block and is in threaded connection with the adjusting block;
two positioning pins are arranged on the adjusting block, and the center distance of the two positioning pins is not smaller than the minimum hole distance of the two positioning holes; and the two positioning pins are respectively inserted into the corresponding positioning holes and used for positioning and locking the two cam shaft gears.
Preferably, the center distance between the two positioning pins is equal to the minimum distance between the two positioning holes.
Preferably, the adjusting screw comprises a threaded rod section, a first polished rod section, a flange and a second polished rod section which are connected in sequence, and the threaded rod section is in threaded connection with the adjusting block;
the base is provided with an inserting hole which is used for being inserted into the second polished rod section in a rotating fit mode, the second polished rod section is connected with the base in a rotating fit mode through the inserting hole, and the end face of the flange is attached to the end face of the base.
Preferably, the adjusting screw comprises a threaded rod section, a first polished rod section, a flange and a second polished rod section which are connected in sequence, and the threaded rod section is in threaded connection with the adjusting block;
the base is provided with a mounting hole for mounting a bearing, the second polished rod section is connected with the base in a rotating fit mode through the bearing, and the end face of the flange is attached to the end face of the base.
Preferably, the top of the threaded rod section is provided with an inner hexagonal blind hole.
Preferably, the adjusting screw is of an integrally formed structure.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model discloses a camshaft gear locking tool, utilize the fixed locating pin of centre-to-centre spacing to fix a position and lock two camshaft gears; the center distance of the two positioning pins must not be smaller than the minimum distance between the two positioning holes, so that the two positioning pins can be respectively inserted into the corresponding positioning holes after the two camshaft gears rotate to a certain position; the adjusting screw rod can be rotated to position and lock the two cam shaft gears, and meanwhile, the tool can be prevented from falling off when the cam shaft gears move axially.
The utility model discloses simple structure, the specificity is strong, can fix a position locking, labour saving and time saving, the follow-up maintenance of the engine of being convenient for to two camshaft gears fast.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of another view angle of the present invention;
fig. 3 is a schematic exploded view of the present invention;
fig. 4 is a cross-sectional view of a first embodiment of the invention;
fig. 5 is a cross-sectional view of a second embodiment of the invention;
fig. 6 is a state diagram before positioning and locking the camshaft gear of the present invention;
fig. 7 is a state diagram after positioning and locking the camshaft gear of the present invention;
in the figure, 1-base, 11-plug hole, 12-bearing, 2-adjusting screw, 21-threaded rod section, 211-inner hexagonal blind hole, 22-first polished rod section, 23-flange, 24-second polished rod section, 3-adjusting block, 4-positioning pin, 5-engine, 6-cylinder cover, 7-camshaft, 8-camshaft gear, 81-positioning hole, 9-camshaft gear and 91-positioning hole.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in figure 1, the camshaft gear locking tool mainly comprises a base 1, an adjusting screw rod 2 and an adjusting block 3; one end of the adjusting screw rod 2 is connected with the base 1 in a rotating fit mode, and the other end of the adjusting screw rod 2 penetrates through the adjusting block 3 and is in threaded connection with the adjusting block 3; when the adjusting screw 2 is rotated, the adjusting block 3 can move along the axial direction of the adjusting screw 2.
The ends of the two camshaft gears 8 and 9 of the engine 5 are respectively provided with positioning holes 81 and 91; the adjusting block 3 is provided with two positioning pins 4, and the center distance (fixed) of the two positioning pins 4 is not less than the minimum distance between the two positioning holes 81 and 91; after the two camshaft gears 8 and 9 are ensured to rotate to certain positions, the two positioning pins 4 are respectively inserted into the corresponding positioning holes 81 and 91 and are used for positioning and locking the two camshaft gears 8 and 9.
In this embodiment, the center distance of the two positioning pins 4 is equal to the minimum pitch of the two positioning holes 81 and 91.
As shown collectively in fig. 2 to 4, the adjusting screw 2 includes a threaded rod section 21, a first polished rod section 22, a flange 23 (corresponding to a polished rod section having a larger diameter than the first polished rod section 22 and the second polished rod section 24), and a second polished rod section 24, which are connected in this order, and the threaded rod section 21 is threadedly connected to the adjusting block 3.
The base 1 is provided with a plug hole 11 for plug-in running fit with the second polished rod section 24, the second polished rod section 24 is connected with the base 1 through the plug hole 11 in running fit, and the end face of the flange 23 is attached to the end face of the base 1.
The top of the threaded rod section 21 is provided with an inner hexagonal blind hole 211, so that a hexagonal wrench can be conveniently inserted to realize the rotation operation of the adjusting screw rod 2. Meanwhile, the processing is convenient, and the adjusting screw rod 2 can be of an integrally formed structure.
Example two:
the second embodiment is different from the first embodiment in that the adjusting screw 2 is connected with the base 1 in a rotating fit manner, and only the difference will be described below.
As shown in fig. 5, the adjusting screw 2 also comprises a threaded rod section 21, a first polished rod section 22, a flange 23 and a second polished rod section 24 which are connected in sequence, wherein the threaded rod section 21 is in threaded connection with the adjusting block 3; the base 1 is provided with a mounting hole for mounting the bearing 12, the second polished rod section 24 is connected with the base 1 in a rotating fit manner through the bearing 12, and the end face of the flange 23 is attached to the end face of the base 1.
By using the camshaft gear locking tool of the above embodiment, the specific work engineering of positioning and locking the camshaft gears 8 and 9 is as follows:
as shown in fig. 6, the base 1 is placed on the upper end surface of the cylinder head 6, and the cam gears 8 and 9 are rotated so that the pitch of the positioning holes 81 and 91 is the same as the center pitch of the two positioning pins 4. Then a hexagon wrench is inserted into the inner hexagon blind hole 211 at the top of the adjusting screw 2 and rotates clockwise, and the positioning pin 4 on the adjusting block 3 is aligned with the positioning holes 81 and 91 under the reaction of the thread.
As shown in fig. 7, the tool is moved toward the cam gears 8 and 9, the two positioning pins 4 are inserted into the corresponding positioning holes 81 and 91, and the adjusting screw rod 2 is further tightened clockwise, so that the tool is pushed against the upper end surface 701 of the cylinder head 6 and the positioning holes 81 and 91, the tool cannot move axially along the positioning pins 4 (the tool is prevented from moving axially on the cam gears 8 and 9), and the cam gears 8 and 9 cannot rotate any more, thereby positioning and locking the cam gears 8 and 9.
To sum up, the utility model discloses a camshaft gear locking instrument, simple structure, the specificity is strong, and the operation of being convenient for only uses few steps just can fix a position locking, labour saving and time saving, the follow-up maintenance of the engine 6 of being convenient for fast to two camshaft gears 8, 9.
The above description is of the preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification and improvement made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (6)
1. A camshaft gear locking tool is characterized in that the locking tool comprises a base, an adjusting screw rod and an adjusting block, wherein the end parts of two camshaft gears of an engine are provided with positioning holes;
one end of the adjusting screw rod is connected with the base in a rotating fit mode, and the other end of the adjusting screw rod penetrates through the adjusting block and is in threaded connection with the adjusting block;
two positioning pins are arranged on the adjusting block, and the center distance of the two positioning pins is not smaller than the minimum hole distance of the two positioning holes; and the two positioning pins are respectively inserted into the corresponding positioning holes and used for positioning and locking the two cam shaft gears.
2. The camshaft gear locking tool of claim 1 wherein the center-to-center distance of two of said locating pins is equal to the minimum pitch of two of said locating holes.
3. The camshaft gear locking tool of claim 1 wherein the adjustment screw comprises a threaded rod section, a first polished rod section, a flange, and a second polished rod section connected in series, the threaded rod section being in threaded connection with the adjustment block;
the base is provided with an inserting hole which is used for being inserted into the second polished rod section in a rotating fit mode, the second polished rod section is connected with the base in a rotating fit mode through the inserting hole, and the end face of the flange is attached to the end face of the base.
4. The camshaft gear locking tool of claim 1 wherein the adjustment screw comprises a threaded rod section, a first polished rod section, a flange, and a second polished rod section connected in series, the threaded rod section being in threaded connection with the adjustment block;
the base is provided with a mounting hole for mounting a bearing, the second polished rod section is connected with the base in a rotating fit mode through the bearing, and the end face of the flange is attached to the end face of the base.
5. The camshaft gear locking tool of claim 3 or 4 wherein the top of the threaded rod section is provided with a hexagonal socket blind hole.
6. The camshaft gear locking tool of claim 5 wherein the adjustment screw is of one-piece construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920351613.8U CN209887436U (en) | 2019-03-19 | 2019-03-19 | Camshaft gear locking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920351613.8U CN209887436U (en) | 2019-03-19 | 2019-03-19 | Camshaft gear locking tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209887436U true CN209887436U (en) | 2020-01-03 |
Family
ID=68997640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920351613.8U Active CN209887436U (en) | 2019-03-19 | 2019-03-19 | Camshaft gear locking tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209887436U (en) |
-
2019
- 2019-03-19 CN CN201920351613.8U patent/CN209887436U/en active Active
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