KR101265399B1 - Sensor jig for the device of the bearing wear monitoring and using method of the sensor jig for the Low speed diesel engine - Google Patents

Sensor jig for the device of the bearing wear monitoring and using method of the sensor jig for the Low speed diesel engine Download PDF

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Publication number
KR101265399B1
KR101265399B1 KR1020100078174A KR20100078174A KR101265399B1 KR 101265399 B1 KR101265399 B1 KR 101265399B1 KR 1020100078174 A KR1020100078174 A KR 1020100078174A KR 20100078174 A KR20100078174 A KR 20100078174A KR 101265399 B1 KR101265399 B1 KR 101265399B1
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South Korea
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sensor
tool
guide shoe
diesel engine
low speed
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KR1020100078174A
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Korean (ko)
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KR20120015768A (en
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홍경태
엄덕형
박진수
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두산엔진주식회사
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Abstract

The present invention relates to a sensor tool for a bearing wear monitoring device of a low speed diesel engine.
Sensor tool for bearing wear monitoring device of the low speed diesel engine according to the present invention is equivalent to the distance between the crosshead guide shoe 28 and the sensor 32 when the position of the crosshead guide shoe 28 is a bottom dead center. A disk 102 having a thickness h; A cylinder body (104) formed under the disk (102) and having a sensor housing (106) formed to receive a portion of the sensor (32); A storage 112 formed as an accommodation space at an inner diameter of the cylinder body 104 and having a hold 112a formed at an entrance thereof to be narrower than a cross section of the accommodation space; A ball (120) accommodated in the storage (112) and protruding a portion toward the sensor accommodating portion (106) so as not to be detached from the sensor (32) arbitrarily; And a spring 122 accommodated in the storage 112 and exerting a restoring force in a direction pushing the ball 120 toward the sensor accommodating part 106.

Description

Sensor jig for the device of the bearing wear monitoring and using method of the sensor jig for the Low speed diesel engine}

The present invention relates to a sensor tool for the bearing wear monitoring device of a low speed diesel engine, and more particularly, to a sensor wear tool for the bearing wear monitoring device of a low speed diesel engine to enable the sensor to be installed at an appropriate position in the bearing wear monitoring device. .

In general, low-speed diesel engines are used as propulsion engines for large ships, container ships, bulk carriers, and crude oil carriers such as VLCC and ULCC. They range from 10,000 to 110,0000 horsepower and are 20 to 30 meters in height and length. To reach.

In addition, as the low speed diesel engine is larger, the size of the bearing installed in the mechanically driven part is very large, and such a bearing may have a great influence on the engine driving, so the wear condition of the bearing is required to be monitored in advance. As a device for monitoring the wear condition of a bearing, a bearing monitoring device is known on one side of a low speed diesel engine.

Therefore, the wear of the bearing can be detected at an early stage to reduce the fatal damage or damage caused by the worn bearing.

The principle of bearing monitoring described above is to measure the position of the crosshead guide shoe when the piston is located at the bottom dead center and to inform the control center of an abnormality of the bearing when the reference is exceeded.

Hereinafter, a position in which the bearing wear monitoring apparatus is installed will be described with reference to FIGS. 1 and 2.

1 is a view for explaining a low speed diesel engine, Figure 2 is a view for explaining the position where the bearing wear monitoring device is installed in the low speed diesel engine.

As shown in FIG. 1, in the low speed diesel engine 10, a frame box 14 is provided above the bed frame 12, and a cylinder frame is provided above the frame box 14.

The crank 22 is installed in the above-described bed frame 12, the connecting rod 24 is connected to the crank 22, the crosshead guide shoe 28 is installed at the upper end of the connecting rod 24, cross The piston and the piston rod are installed above the head guide shoe 28.

In addition, the guide surface 16 is formed in the frame box 14, and the crosshead guide shoe 28 mentioned above slides in the guide surface 16 mentioned above.

In addition, a bearing unit 26 is installed at a portion that rotates between components, and examples of the bearing unit include a main bearing, a crosshead guide shoe bearing, a crank pin bearing, and the like. There is this.

In addition, the sensor unit 30 is installed in the position where the crosshead guide shoe 28 mentioned above moved to the lowest point.

The crosshead guide shoe 28 is a linear motion by the operation of the engine together with the piston and the piston rod, the linear motion is converted into rotational motion by the crank 22 and the crankshaft is outputting the rotational power .

On the other hand, as shown in Fig. 2, in the low speed diesel engine 10, a plurality of cylinder liners and pistons are arranged, and a guide surface 16 is formed for each cylinder liner.

The sensor unit 30 mentioned above is arrange | positioned between any one guide surface 16 mentioned above and the other guide surface 16. As shown in FIG.

The sensor unit 30 described above will be described with reference to the accompanying drawings, FIGS. 3 and 4.

3 and 4 are views for explaining a configuration and operation of a sensor unit and a process of setting a sensor in a bearing wear monitoring apparatus of a low speed diesel engine.

In the sensor unit 30 described above, a plurality of sensors 32 are disposed at both sides, the plurality of sensors 32 detect one crosshead guide shoe 28, and the other sensor 32 is adjacent to the sensor unit 30. Another crosshead guide shoe 28 is detected.

The sensor 32 detects the crosshead guide shoe 28 described above, transmits the result value to the controller, calculates the result value, and indirectly measures the wear state of the bearing and diagnoses the wear state of the bearing.

When the above-described sensor 32 detects the crosshead guide shoe 28, the sensor 32 and the crosshead guide shoe 28 must maintain an appropriate distance a, thereby improving the reliability of the detection value. The sensor 32 and the crosshead guide shoe 28 are stabilized without colliding with each other.

The appropriate distance a between the sensor 32 and the crosshead guide shoe 28 described above may be, for example, 4 mm.

Therefore, the sensor unit 30 needs to set an appropriate distance a between the sensor 32 and the crosshead guide shoe 28, but the process of setting the height of the conventional sensor 32 is shown in FIG. Will be explained.

As shown in FIG. 4, first, the sensor 32 is temporarily installed to protrude to a significant height b from the bracket 34.

In more detail, the provisional installation described above may be loosened so that the sensor 32 can be moved from the bracket 34 when an external force is applied to the sensor 32 in the longitudinal direction of the sensor 32 by loosely tightening the fastening bolt 36. When the external force is not applied, the sensor 32 is stopped at the bracket 34.

Thereafter, the operator lowers the crosshead guide shoe 28 while placing the shim unit 40 on the upper side of the sensor 32 while rotating the crank 22 of the low speed diesel engine 10.

The crosshead guide shoe 28 descends again after pressing the shim unit 40 while descending, and the sensor 32 is pressed by the crosshead guide shoe 28.

Thereafter, the shim unit 40 is removed and the sensor 32 in the depressed state is tightened to the bracket 34 using the sensor nuts 32a and 32b.

However, as described above, the operator should set the sensor 32 for each sensor unit 30. When the number of the crosshead guide shoes 28 is large, the number of the crosshead guide shoes 28 of the sensor unit 30 is increased. There is a hassle to set the sensor and rotate the crank 22 each time.

In particular, the larger the number of crosshead guide shoes 28, the more time and labor required to install the sensor unit 30 has a problem.

In addition, as described above, the operator enters the low-speed diesel engine 10 and directly holds the shim unit 40, thereby causing an error due to a human error, thereby reducing the reliability of the detection value of the sensor 32. There is a problem.

On the other hand, since the space where the worker can avoid his body is very narrow, there is a big risk of safety accidents.

Therefore, the technical problem to be achieved by the present invention is to allow the operator to set the height of the sensor of the sensor unit without rotating the crank of the low speed diesel engine to improve the safety of the operator when rotating the crank of the low speed diesel engine. The object is to provide a sensor tool for a bearing wear monitoring device of a diesel engine.

Another object of the present invention is to provide a tool tool for a bearing wear monitoring device of a low speed diesel engine to prevent an error caused by an operator so as to improve the reliability of a detection value of a crosshead guide shoe detected by a sensor of a sensor unit. To provide.

Another object of the present invention is to set the height of the sensor unit of the sensor unit installed for each crosshead guide shoe at the same time with a minimum number of rotations of the crank even if the number of crosshead guide shoes is large, the time required for setting the sensor unit To provide a sensor tool for the bearing wear monitoring device of a low speed diesel engine that can significantly shorten and reduce labor.

The present invention has been made in view of the above problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. There will be.

A sensor tool for a bearing wear monitoring device of a low speed diesel engine according to the present invention for achieving the above technical problem is a disk having a thickness equal to the distance between the crosshead guide shoe and the sensor when the bottom dead center of the crosshead guide shoe. ; A cylinder body formed at a lower side of the disk to form a sensor accommodating part to accommodate a part of the sensor; And a locking unit formed at an inner diameter of the cylinder body to bind to the sensor so as not to be peeled off arbitrarily from the sensor.
In order to achieve the above technical problem, a method of using a sensor tooth tool for a bearing wear monitoring device of a low speed diesel engine according to the present invention includes the crosshead guide shoe 28 when the position of the crosshead guide shoe 28 is a bottom dead center. A disk 102 having a thickness h equivalent to the distance made by the sensor 32; A cylinder body (104) formed under the disk (102) and having a sensor housing (106) formed to receive a portion of the sensor (32); And a locking unit (110) formed at the inner diameter of the cylinder body (104) so as not to be detached from the sensor (32) by being bound to the sensor (32). A mounting step of covering the cylinder body (104) on the upper side of the sensor (32) so that the sensor tool (100) does not come off from the sensor (32) by the locking unit (110); After the mounting step, the step of pushing down the disk (102) by pressing the sensor (32) by the lowering of the cross head guide shoe (28); A tightening step of tightening the sensor nuts (32a, 32b) fastened to the sensor (32) to the bracket (34) after the step of stepping down; After the tightening step, a stripping step of peeling off the sensor tool tool 100 from the sensor 32; And after the removal step, the sensor 32 detects the cross head guide shoe 28 when the cross head guide shoe 28 is lowered by maintaining the position where the sensor 32 is tightened in the tightening step. It includes a detection step;

In addition, the locking unit may be a female screw is formed in the sensor housing to be coupled to the male screw formed on the outer diameter of the sensor.

The locking unit may include: a storage formed at an inner diameter of the cylinder body as a storage space and having a hold formed at an entrance thereof to be narrower than a cross section of the storage space; A ball accommodated in the storage and a part protruding toward the sensor accommodating part; And a spring accommodated in the storage and exerting a restoring force in a direction of pushing the ball toward the sensor accommodating portion.

The locking unit may include: a storage formed at an inner diameter of the cylinder body as a storage space and having a hold formed at an entrance thereof to be narrower than a cross section of the storage space; And a leaf spring which is accommodated in the storage and protrudes an edge part toward the sensor accommodating portion.

In addition, the leaf spring may be provided in plurality.

In addition, the edge part may be formed in a spiral shape to be coupled to the male screw of the sensor.

Specific details of other embodiments are included in the detailed description and the drawings.

The sensor tool for bearing wear monitoring device of the low speed diesel engine according to the present invention made as described above, after installing the sensor in the sensor unit to be set, put the sensor tool on the upper side of the sensor, the operator comes out of the low speed diesel engine By rotating the crank to raise and lower the crosshead guide shoe, several sensors can be set at the appropriate height at once.

As described above, the operator can be outside the low-speed diesel engine when setting the sensor of the sensor unit can reduce the risk of the safety accident of the operator.

In addition, it is possible to prevent the human error caused by the operator to hold the shim unit directly as in the prior art.

In addition, it is possible to significantly reduce the time required for the installation of the sensor unit by proceeding to set the sensor height at the same time all the sensors of the height setting target at the same time.

1 is a view for explaining a low speed diesel engine.
2 is a view for explaining the position where the bearing wear monitoring device is installed in a low speed diesel engine.
3 and 4 are views for explaining the configuration and operation of the sensor unit and the process of setting the sensor in the conventional bearing wear monitoring device of a low speed diesel engine.
5 is a view for explaining a sensor tool for the bearing wear monitoring device of a low speed diesel engine according to an embodiment of the present invention.
6 is a view for explaining a sensor tool for the bearing wear monitoring device of a low speed diesel engine according to another embodiment of the present invention.
7 is a view for explaining a sensor tool for the bearing wear monitoring device of a low speed diesel engine according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

Like reference numerals refer to like elements throughout the specification.

Hereinafter, a sensor tool for a bearing wear monitoring device of a low speed diesel engine according to an exemplary embodiment of the present invention will be described with reference to FIGS. 5 to 7.

5 is a view illustrating a sensor tool for the bearing wear monitoring device of a low speed diesel engine according to an embodiment of the present invention, Figure 6 is a low speed diesel engine according to another embodiment of the present invention. Figure 7 is a view for explaining the sensor tool tool for bearing wear monitoring device, the accompanying drawings Figure 7 is a view for explaining the sensor tool tool for bearing wear monitoring device of a low speed diesel engine according to an embodiment of the present invention.

As shown in FIG. 5, the sensor 32 may be installed by covering the sensor tool 100 on the upper side of the sensor 32 in a state in which the bracket 34 is temporarily installed.

More detailed description of the above-described bracket 34 is as follows.

The bracket 34 has a sensor hole 34a in which the sensor 32 is accommodated, a slit 34b is formed at one side of the sensor hole 34a, and one side of the bracket 34 is based on the slit 34b. There is a fastening bolt 36 is fastened.

That is, tightening the above-mentioned fastening bolt 36 narrows the gap of the above-mentioned slit 34b, and fixes the sensor 32 disposed in the sensor hole 34a. In this case, when the fastening bolt 36 is loosely tightened. If an external force is applied to the sensor 32, the sensor 32 can be moved.

In addition, a male screw is formed on the outer circumference of the sensor 32, and sensor nuts 32a and 32b are fastened to upper and lower sides of the bracket 34 based on the bracket 34.

The sensor 32 is intactly fixed to the bracket 34 by tightening the above-described sensor nuts 32a and 32b toward the bracket 34.

The above-described sensor tool 100 is provided with a disk 102 having a predetermined thickness, the cylinder body 104 is integrally formed under the disk 102 described above, the sensor below the cylinder body 104 The receiving unit 106 is formed.

The thickness h of the disk 102 described above may be equal to the distance when the sensor 32 and the crosshead guide shoe 28 descend to the lowest point. For example, the thickness h of the disk 102 may be It may be 3mm to 5mm and more specifically 4mm.

When the thickness h of the disk 102 described above is in the range of 3 mm to 5 mm, the displacement value can be accommodated when the crosshead guide shoe 28 is abnormally lowered when the bearing is abnormally worn.

The sensor accommodating part 106 mentioned above is for accommodating the upper end of the sensor 32 when the sensor tool 100 is put on the upper side of the sensor 32.

In addition, the locking unit 110 is installed in the above-described sensor accommodating part 106 such that the sensor tool 100 is not detached from the sensor 32 arbitrarily.

As shown in FIG. 5, the locking unit 110 may be a female screw formed to be coupled to a male screw formed at an outer diameter of the sensor 32.

That is, when the height of the sensor 32 is to be set, the female screw of the sensor tool 100 is fastened to the sensor 32 at the upper end of the sensor 32 to proceed with the installation of the sensor unit 30.

The locking unit 110 described above may constitute a ball stopper, as shown in FIG. 6, so that the locking unit 110 can proceed rapidly when it is covered or removed from the upper side of the sensor 32.

That is, the storage 112 is formed in a predetermined space inside the cylinder body 104, and the hold 112a protrudes from the inlet of the storage 112.

The ball 120 is inserted into the storage 112, and a spring 122 is disposed inside the ball 120 to push the ball 120 toward the sensor accommodating part 106.

In addition, the above-described hold 112a protrudes a part of the above-described ball 120, but prevents the ball 120 from being separated.

Therefore, when the sensor tool 100 is applied to the sensor 32, the ball 120 is not affected by the thread of the sensor 32, so that the ball 120 can be quickly applied, and conversely, the sensor tool 100 may be quickly applied to the sensor 32. It can be removed.

In addition, when the sensor tool 100 is placed on the sensor 32, the ball 120 is in close contact with the sensor 32 by the restoring force of the spring 122, so that the sensor tool 100 is not detached from the sensor 32 arbitrarily The overlaid state is maintained.

That is, the cross-head guide shoe 28 and the sensor tool 100 are in contact with each other when the sensor tool 100 is fixed to the sensor 32.

The locking unit 110 described above may constitute a leaf spring stopper as shown in FIG. 7 in order to be more firmly fixed after being covered by the sensor 32.

As shown in FIG. 7, the sensor tool 100 has a storage 112, which is a predetermined space portion, formed inside the cylinder body 104, and a hold narrower than a cross section of the storage 112 at an inlet of the storage 112. 112a) is formed.

The leaf spring 130 is disposed in the storage 112 described above, and a portion of the leaf spring 130 protrudes toward the sensor accommodating part 106.

The leaf spring 130 described above will be described in detail.

As shown in the detailed view of FIG. 7, the slope part 134 may be formed on both sides of the edge part 132, and the insert part 136 may be formed on both sides of the slope part 134.

The above-described edge part 132 may be formed somewhat sharply, thereby improving the external thread and the binding force of the sensor 32.

On the other hand, the edge part 132 described above may be formed in a spiral shape so as to be screwed to the male screw of the sensor 32 described above.

The above-mentioned slope part 134 makes contact with the external thread of the sensor 32 when the sensor tool 100 is put on or removed from the sensor 32 so that the leaf spring 130 is pushed into the storage 112. It acts as a guide.

The insert part 136 and the hold 112a described above prevent the plate spring 130 from being randomly detached in a state in which the leaf spring 130 is disposed in the storage 112.

In addition, the above-described storage 112 may be formed in plural, and each of the storage 112 has a leaf spring 130 for protruding the edge part 132.

That is, by forming a plurality of leaf springs 130, the binding force with the sensor 32 is further improved, and when the crosshead guide shoe 28 and the sensor tool tool 100 come into contact with each other, the sensor tooth tool 100 is moved from the sensor 32. It can be prevented from leaving at random.

The sensor tool 100 according to the present invention configured as described above sets the height of the sensor 32 in a state of being covered by the sensor 32 of the sensor unit 30.

In particular, when there are a plurality of sensor units 30 to be set in height, the sensor tool 100 is installed on all the sensors 32 to be covered, and the crank 22 is rotated at the minimum rotational speed to provide all the crosshead guides. The shoe 28 abuts against the sensor tool 100 covered by the sensor 32 of each sensor unit 30.

That is, even if there are many sensors 32 to be set, the height of all the sensors 32 can be set at a time by rotating the crank 22 one time, and thus the time required for installing the sensor unit 30 and The labor force can be significantly reduced.

In addition, the operator enters the inside of the low-speed diesel engine 10 only when the user attaches or removes the sensor tool 100 and finally secures the sensor 32 to the bracket 34, thereby significantly reducing the risk of an accident. It can be.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

Sensor tools for bearing wear monitoring devices of low speed diesel engines according to the invention can be used to set the height of the sensor unit.

10: Low speed diesel engine 12: Bed frame
14: Frame Box 16: Guide Surface
22: crank 24: connecting rod
26: bearing unit
28: Crosshead Guide Shoe
30: sensor unit 32: sensor
32a, 32b: sensor nut 34: bracket
34a: sensor hole 34b: slit
36: fastening bolt 40: shim unit
100: sensor fixture
102: disc 104: cylinder body
106: sensor accommodating part 110: locking unit
112: storage 112a: hold
120: ball 122: spring
130: leaf spring 132: edge part
134: slope part 136: insert part

Claims (9)

delete delete A disk 102 having a thickness h equal to the distance between the crosshead guide shoe 28 and the sensor 32 when the crosshead guide shoe 28 is at a bottom dead center;
A cylinder body (104) formed under the disk (102) and having a sensor housing (106) formed to receive a portion of the sensor (32);
A storage 112 formed as an accommodation space at an inner diameter of the cylinder body 104 and having a hold 112a formed at an entrance thereof to be narrower than a cross section of the accommodation space;
A ball (120) accommodated in the storage (112) and protruding a portion toward the sensor accommodating portion (106) so that the sensor (32) does not come off at random; And
A spring 122 accommodated in the storage 112 and exerting a restoring force in a direction pushing the ball 120 toward the sensor accommodating part 106;
Sensor tool for bearing wear monitoring device of a low speed diesel engine comprising a.
delete delete delete A disk 102 having a thickness h equal to the distance between the crosshead guide shoe 28 and the sensor 32 when the crosshead guide shoe 28 is at a bottom dead center;
A cylinder body (104) formed under the disk (102) and having a sensor housing (106) formed to receive a portion of the sensor (32); And
And a locking unit (110) formed at the inner diameter of the cylinder body (104) to bind with the sensor (32) so as not to be detached from the sensor (32).
A mounting step of covering the cylinder body (104) on the upper side of the sensor (32) so that the sensor tool (100) does not come off from the sensor (32) by the locking unit (110);
After the mounting step, the step of pushing down the disk (102) by pressing the sensor (32) by the lowering of the cross head guide shoe (28);
After the step of tightening, tightening the sensor nut (32a, 32b) fastened to the bracket (34) by tightening the sensor (32);
After the tightening step, a stripping step of peeling off the sensor tool tool 100 from the sensor 32; And
After the removal step, the sensor 32 detects the cross head guide shoe 28 when the cross head guide shoe 28 is lowered by maintaining the position where the sensor 32 is tightened in the tightening step. Detection step;
Method of using a sensor tool for bearing wear monitoring device of a low speed diesel engine comprising a.
8. The method of claim 7,
The locking unit 110,
Method of using a sensor tool for the bearing wear monitoring device of the low speed diesel engine, characterized in that the female thread is formed in the sensor housing 106 to be engaged with the male screw formed on the outer diameter of the sensor (32).
8. The method of claim 7,
The locking unit 110,
A storage 112 formed as an accommodation space at an inner diameter of the cylinder body 104 and having a hold 112a formed at an entrance thereof to be narrower than a cross section of the accommodation space;
A ball (120) stored in the storage (112) to protrude toward the sensor accommodating portion (106); And
A spring 122 accommodated in the storage 112 and exerting a restoring force in a direction pushing the ball 120 toward the sensor accommodating part 106;
Method of using a sensor tool for bearing wear monitoring device of a low speed diesel engine comprising a.
KR1020100078174A 2010-08-13 2010-08-13 Sensor jig for the device of the bearing wear monitoring and using method of the sensor jig for the Low speed diesel engine KR101265399B1 (en)

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KR1020100078174A KR101265399B1 (en) 2010-08-13 2010-08-13 Sensor jig for the device of the bearing wear monitoring and using method of the sensor jig for the Low speed diesel engine

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KR101876930B1 (en) 2016-12-07 2018-07-11 이춘우 Temperature sensor unit and the same making method of Low-speed diesel engines for large vessel
CN109211165B (en) * 2018-08-02 2021-03-26 中国航空工业集团公司西安飞行自动控制研究所 Built-in locking structure of actuator cylinder displacement sensor
CN110340731B (en) * 2019-08-12 2024-08-13 广州市精谷智能科技有限公司 Mounting bracket for spliced linear encoder shell

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Publication number Priority date Publication date Assignee Title
JP2001065513A (en) * 1999-08-26 2001-03-16 Toyota Autom Loom Works Ltd Hydraulic cylinder position detection device and industrial vehicle provided therewith

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2001065513A (en) * 1999-08-26 2001-03-16 Toyota Autom Loom Works Ltd Hydraulic cylinder position detection device and industrial vehicle provided therewith

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