CN216207096U - Diesel engine main shaft bush temperature monitoring device - Google Patents
Diesel engine main shaft bush temperature monitoring device Download PDFInfo
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- CN216207096U CN216207096U CN202122435852.1U CN202122435852U CN216207096U CN 216207096 U CN216207096 U CN 216207096U CN 202122435852 U CN202122435852 U CN 202122435852U CN 216207096 U CN216207096 U CN 216207096U
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Abstract
The utility model discloses a diesel engine main shaft bushing temperature monitoring device, which comprises a temperature acquisition device and a wire harness outlet assembly, wherein the temperature acquisition device is connected with the wire harness outlet assembly; the temperature acquisition device comprises a temperature measurement probe, a limiting round table, a spring, a fixed joint, a compression nut and a wire harness; the temperature measuring probe is a part of the surface thermocouple sensor, the lower part of the temperature measuring probe is in electrical signal connection with the wire harness through the limiting round table, and the temperature measuring probe is used for outputting a detected temperature signal through the wire harness by being attached to the outer wall of the main shaft bushing of the diesel engine; the wiring harness outlet assembly is mounted on the side wall of the engine body and used for leading out a wiring harness from the side wall of the diesel engine to be connected with an external temperature monitoring system and sealing an outlet. The utility model has simple installation, reliable use and convenient maintenance; the temperature probe is in direct contact with the main shaft bushing to measure true and reliable data.
Description
Technical Field
The utility model belongs to the technical field of engines, and relates to a temperature monitoring device for a main shaft bushing of a diesel engine.
Background
In the working process of the diesel engine, the crankshaft rotates at a high speed, the working environment of a friction pair between the crankshaft and a bearing bush is severe, if lubrication is poor, or due to the poor use condition or the poor technical state of matched parts, the friction pair between the crankshaft and the bearing bush can rub to generate high temperature, so that serious faults of axle holding, bearing bush pulling and the like occur to the diesel engine, and the service life of the diesel engine is directly influenced. In order to early warn of serious faults and intervene as early as possible, the temperature of the main bearing bush of the diesel engine needs to be monitored in order to research the influence of the working state of each diesel engine component on the temperature of the main bearing bush.
In the prior art, a published Chinese patent document 'diesel engine bearing bush detection device' (publication number CN104897379A), which simulates the work of a diesel engine through the matching of a rotating part and a stationary part, is only used for a platform test and cannot realize the real-time acquisition of the temperature parameters of the bearing bush; the temperature of the bearing bush is indirectly monitored by detecting the temperature of the static part, the actual temperature of the bearing bush cannot be reflected, and the obtained data is unreliable.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model provides a device for monitoring the temperature of a main bearing bush of a diesel engine, and aims to realize the real-time acquisition and monitoring of the temperature parameters of the bearing bush by directly contacting a temperature acquisition device with the main bearing bush, so that the measured data is real and reliable, is not influenced by the external environment, and can reflect the temperature of the bearing bush timely and as early as possible.
In order to achieve the purpose, the utility model provides the following technical scheme:
a temperature monitoring device for a main shaft bushing of a diesel engine comprises a temperature acquisition device and a wire harness outlet assembly;
the temperature acquisition device comprises a temperature measurement probe, a limiting round table, a spring, a fixed joint, a compression nut and a wire harness;
the temperature measuring probe is a part of the surface thermocouple sensor, the lower part of the temperature measuring probe is in electrical signal connection with the wire harness through the limiting circular table, and the temperature measuring probe is used for outputting a detected temperature signal through the wire harness by being attached to the outer wall of the main shaft bushing of the diesel engine;
a guide groove is vertically formed in the fixed joint, a spring is arranged in the guide groove, an external thread used for being connected to the lower end of a main bearing cover of the diesel engine is arranged at one end of the fixed joint, an external hexagonal head is arranged in the middle of the fixed joint and serves as a screwing head, the other end of the fixed joint is of a cylindrical hollow structure, and an internal thread used for installing a compression nut is arranged on the inner wall of the fixed joint;
the compression nut is used for tightly propping the fixed spring from the lower part;
the limiting round table is used for tightly jacking the limiting spring from the upper part and is used for being matched with a step hole preset in the main bearing cap to limit the overlarge extending amount of the temperature measuring probe;
the spring is used for driving the temperature measuring probe to be tightly propped against the outer wall of the main bearing shell of the diesel engine through resilience force;
the wiring harness outlet assembly is mounted on the side wall of the engine body, is used for leading out wiring harnesses from the side wall of the diesel engine to be connected with an external temperature monitoring system, and is used for sealing an outlet.
As a further optimization, the wiring harness outlet assembly comprises a through pipe joint, a sealing plug and a pipe joint nut; the straight pipe joint is of a hollow structure, an outer hexagonal screwing part is arranged in the middle of the straight pipe joint, external threads are arranged at two ends of the straight pipe joint, one end of the straight pipe joint is used for being connected with a diesel engine body, and the other end of the straight pipe joint is used for being connected with a pipe joint nut; the sealing plug is of a hollow cylindrical structure and is made of an elastic material; the pipe joint nut is of a hollow structure, and is internally provided with threads and a pressing step; the straight pipe joint, the sealing plug and the pipe joint nut are coaxially arranged in sequence and are used for forming a pipeline for a wiring harness to pass through at the axis of the straight pipe joint, the sealing plug and the pipe joint nut through a hollow structure; the sealing plug is arranged between the straight pipe joint and the pipe joint nut and used for pushing the sealing plug to elastically deform to seal the pipeline when the pipe joint nut is in threaded connection with the straight pipe joint.
Preferably, the elastic material is a fluorine rubber.
As a further optimization, the diesel engine further comprises a first wire harness fixing assembly used for horizontally fixing the wire harness in the diesel engine.
As a further optimization, the first harness fixing assembly comprises a support nut and a circlip; the upper part of the supporting nut is of a cylindrical hollow structure, the inner wall surface of the supporting nut is provided with threads, the threads are used for connecting the tail end of a powerful stud at the lower end of the bearing cover, and the lower part of the supporting nut is provided with a wiring harness installation hole and an elastic retainer ring installation groove; the wire harness mounting hole is used for the wire harness to horizontally pass through; the elastic retainer ring mounting groove is used for clamping and connecting the elastic retainer ring, and the elastic retainer ring is used for preventing the wiring harness from falling off from the wiring harness mounting hole.
As a further optimization, the diesel engine wire harness fixing device further comprises a second wire harness fixing assembly used for vertically fixing the wire harness inside the diesel engine.
As a further optimization, the second wire harness fixing assembly comprises a fixing bracket and a wire clamp; the fixed bracket is provided with a bracket mounting hole and a fixed wire clamp mounting nut; the bracket mounting hole is used for fixedly connecting the fixed bracket inside the diesel engine; the wire clamp mounting nut is used for connecting a wire clamp; the wire clamp is a flat structure formed by folding plates, the bending part is provided with a wire harness fixing hole, and the flat plate part is provided with a wire clamp fixing hole penetrating through the two layers of plates; the wire clamp fixing hole is used for penetrating through a bolt to be connected with the wire clamp mounting nut so as to fix the wire clamp on the wire clamp mounting nut; the wire harness fixing hole is used for vertically clamping and fixing the wire harness.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the surface thermocouple sensor is attached to the outer wall of the main shaft bushing for temperature measurement, so that the measured data is real and reliable; the wiring harness outlet assembly is additionally arranged, so that engine oil leakage is prevented, the diesel engine can work for a long time, and the bearing bush temperature monitoring device can monitor for a long time; the first wire harness fixing component and the second wire harness fixing component effectively limit the direction of the wire harness in the diesel engine and avoid interference with movable parts such as a crankshaft, a connecting rod and the like; in a word, the utility model has simple installation, reliable use and convenient maintenance; the temperature probe can be used for actual installation of the diesel engine, and the temperature probe is in direct contact with the main shaft bushing, so that real-time acquisition and monitoring of the temperature parameters of the shaft bushing can be realized, and the measured data is real and reliable.
Drawings
FIG. 1 is a schematic view of an assembly structure of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a temperature acquisition device according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a portion of the structure of FIG. 1;
fig. 4 is a schematic structural view of a first harness fixing member according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a fixing bracket according to embodiment 1 of the present invention;
FIG. 6 is a top view of FIG. 5;
fig. 7 is a schematic view of a structure of a wire clamp according to embodiment 1 of the present invention;
FIG. 8 is a top view of FIG. 7;
fig. 9 is a schematic view of an assembly structure of a wire harness outlet assembly according to embodiment 1 of the present invention.
In the figure: the temperature measuring device comprises a temperature acquisition device 1, a temperature measuring probe 11, a limiting circular table 12, a spring 13, a fixed joint 14, a compression nut 15, a wiring harness 16, a first wiring harness fixing component 2, a support nut 21, a wiring harness mounting hole 211, a circlip mounting groove 212, a circlip 22, a fixed support 31, a wiring harness guide hole 311, a support mounting hole 312, a wire clamp mounting nut 313, a wire clamp fixing hole 321, a wiring harness fixing hole 322, a wiring harness outlet component 4, a straight-through pipe joint 41, a sealing plug 42, a pipe joint nut 43, an engine body 5, a main shaft tile 6 and a bearing cover 7.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the present invention, and it is obvious that the described embodiments are only a part of the preferred embodiments of the present invention, and not all embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1: please refer to fig. 1-9;
the utility model provides the following technical scheme: a temperature monitoring device for a main shaft bushing of a diesel engine is provided with a temperature acquisition device 1, a first wire harness fixing component 2, a second wire harness fixing component 3 and a wire harness outlet component 4;
the temperature acquisition device 1 comprises a temperature measurement probe 11, a limiting circular truncated cone 12, a spring 13, a fixed joint 14, a gland nut 15 and a wiring harness 16, wherein a guide groove is vertically arranged in the fixed joint 14, the spring 13 is arranged in the guide groove, one end of the fixed joint 14 is provided with an external thread for fixing the temperature acquisition device 1, the middle of the fixed joint is provided with an external hexagonal head as a screwing head, the other end of the fixed joint is of a cylindrical hollow structure, and the inner wall of the fixed joint is provided with an internal thread for installing the gland nut 15;
the compression nut 15 is used for tightly propping the fixed spring 13 from the lower part;
the limiting round table 12 is used for tightly jacking the limiting spring 13 from the upper part and is used for being matched with a preset step hole of the main bearing cap to limit the overlarge extending amount of the temperature measuring probe 11;
the spring 13 is used for driving the temperature measuring probe 11 to be tightly abutted against the outer wall of the main bearing shell of the diesel engine through resilience force;
the temperature measuring probe 11 is a part of a surface thermocouple sensor, is a sensor specially used for measuring surface temperature, can work for a long time at high temperature, and the appearance structure of the temperature measuring probe 11 is customized according to the appearance and actual installation requirements of the main bearing bush 6, so that the temperature measuring probe 11 can be attached to the side surface of the main bearing bush 6 for temperature measurement; the surface thermocouple sensor is an N-type or K-type thermocouple;
the first wire harness fixing assembly 2 comprises a support nut 21 and an elastic retainer ring 22 and is used for horizontally fixing the wire harness at the lower end of the bearing cover 7 at the lower part of the main bearing bush 6;
the upper part of the supporting nut 21 is of a cylindrical hollow structure, the inner wall surface of the supporting nut 21 is provided with threads, the supporting nut 21 is used for being mounted at the lower end of the bearing cover 7, and the lower part of the supporting nut 21 is provided with a wiring harness mounting hole 211 and an elastic retainer ring mounting groove 212; for horizontally securing the wiring harness 16 to the engine interior wall; the harness mounting hole 211 for the harness 16 to pass through;
the second wire harness fixing assembly 3 includes a fixing bracket 31, a wire clamp 32 for vertically fixing the wire harness 16 on the inner wall of the engine;
the fixed bracket 31 is provided with a wire harness guide hole 311, a bracket mounting hole 312 and a wire clamp mounting nut 313;
the wire clamp 32 is of a flat structure and is provided with a wire clamp fixing hole 321 and a wire harness fixing hole 322;
the harness outlet assembly 4 comprises a through pipe joint 41, a sealing plug 42 and a pipe joint nut 43, and is used for leading the harness 16 out from the inner wall of the transmitter and sealing the outlet to prevent engine oil leakage, so that the engine can run for a long time in the temperature measuring process.
The straight pipe joint 41 is of a hollow structure, external threads are arranged at two ends of the straight pipe joint, one end of the straight pipe joint 41 is used for fixing the straight pipe joint, the other end of the straight pipe joint is used for compressing a pipe joint nut 43, and an external hexagon is arranged in the middle of the straight pipe joint 41 and used for screwing the straight pipe joint 41;
the sealing plug 42 is of a hollow cylindrical structure and is made of fluororubber;
the pipe joint nut 43 is of a hollow structure, and is internally provided with threads and a compression step.
When the temperature acquisition device is used, the temperature acquisition device 1 is arranged on the bearing cover 7 through the fixed joint 14, the spring 13 is adjusted through the guide groove in the fixed joint 14, the temperature measurement probe 11 is directly contacted with the bearing bush 6, the limiting is carried out through the limiting round table 12, and the spring 13 is fixed through the compression nut 15; the supporting nut 21 is installed on a strong stud of the machine body, the sensor wiring harness 16 penetrates through a wiring harness installation hole 211 of the supporting nut 21, and the wiring harness 16 is fixed on the supporting nut 21 through an elastic retainer ring 22; the fixed bracket 31 is fixed on the machine body through a bracket mounting hole 312, and the sensor wiring harness 16 passes through the guide hole 311 and is fixed on the bracket 31 through the wire clip 32; the wire clamp 32 is fixed by a wire harness mounting nut 313 on the fixing bracket 31; the straight-through pipe joint 41 is fixed on a cover plate of an observation window of the machine body, the sealing plug 42 is arranged between the straight-through pipe joint 41 and the pipe joint nut 43, the sealing plug is made of fluororubber materials and is compressed, deformed and sealed by a compression step of the pipe joint nut 43; the wiring harness 16 is led out of the machine body through the through pipe joint 41, the sealing plug 42 and the pipe joint nut 43 and is connected with an external temperature monitoring system.
When the temperature probe 11 is overhauled or replaced, the fixing of the first wire harness fixing component 2 and the second wire harness fixing component 3 on the wire harness is released, the compression nut 15 is screwed off in a rotating mode, the compression nut 15, the spring 13 and the temperature probe 11 are pulled out of the fixing joint 14, the pipe joint nut 43 is loosened, and the wire harness 16 and the temperature probe 11 can be pulled out of the diesel engine body to be overhauled or replaced. The replaced temperature measuring probe 11 is inserted into the diesel engine body from the straight pipe joint 41 and then is inserted into the bearing cover from the fixed joint 14 for fixing, and the maintenance is convenient.
The bearing bush temperature monitoring device has the advantages of being simple to install, reliable to use and convenient to maintain; the temperature acquisition device 1 is in direct contact with the main shaft bush 6, so that real-time acquisition and monitoring of temperature parameters of the bush 6 can be realized, and the measured data is real and reliable.
The utility model is not described in detail in the prior art; for a person skilled in the art, various technical features of the embodiments described above may be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations should be considered as the scope of the present description. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a diesel engine main shaft bush temperature monitoring device which characterized in that: comprises a temperature acquisition device (1) and a wiring harness outlet component (4);
the temperature acquisition device (1) comprises a temperature measurement probe (11), a limiting round table (12), a spring (13), a fixed joint (14), a compression nut (15) and a wire harness (16);
the temperature measuring probe (11) is a part of the surface thermocouple sensor, the lower part of the temperature measuring probe is in electrical signal connection with a wiring harness (16) through a limiting circular table (12), and the temperature measuring probe (11) is used for outputting a detected temperature signal through the wiring harness (16) by being attached to the outer wall of a main shaft bush of the diesel engine;
a guide groove is vertically arranged in the fixed joint (14), and a spring (13) is arranged in the guide groove; one end of the fixed joint (14) is provided with an external thread which is used for connecting the lower end of a main bearing cover of the diesel engine, an external hexagon which is used as a screwing head is arranged in the middle of the fixed joint, the other end of the fixed joint is of a cylindrical hollow structure, and an internal thread which is used for installing a compression nut (15) is arranged on the inner wall of the fixed joint;
the compression nut (15) is used for tightly pushing the fixed spring (13) from the lower part;
the limiting round table (12) is used for tightly jacking the limiting spring (13) from the upper part and is used for matching with a step hole preset in the main bearing cap to limit the overlarge extending amount of the temperature measuring probe (11);
the spring (13) is used for driving the temperature measuring probe (11) to be tightly abutted against the outer wall of the main bearing shell of the diesel engine through resilience force;
the wiring harness outlet assembly (4) is installed on the side wall of the engine body, is used for leading out wiring harnesses (16) from the side wall of the diesel engine to be connected with an external temperature monitoring system, and is used for sealing an outlet.
2. The diesel engine main bearing shell temperature monitoring device according to claim 1, characterized in that: the wiring harness outlet assembly (4) comprises a straight-through pipe joint (41), a sealing plug (42) and a pipe joint nut (43);
the straight pipe joint (41) is of a hollow structure, an outer hexagonal screwing part is arranged in the middle, external threads are arranged at two ends of the straight pipe joint, one end of the straight pipe joint is used for connecting a diesel engine body, and the other end of the straight pipe joint is used for connecting a pipe joint nut (43);
the sealing plug (42) is of a hollow cylindrical structure and is made of an elastic material;
the pipe joint nut (43) is of a hollow structure, and is internally provided with threads and a pressing step;
the straight-through pipe joint (41), the sealing plug (42) and the pipe joint nut (43) are coaxially arranged in sequence and are used for forming a pipeline for a wiring harness (16) to pass through at the axis of the hollow structure;
the sealing plug (42) is arranged between the straight pipe joint (41) and the pipe joint nut (43) and is used for pushing the sealing plug (42) to elastically deform to seal the pipeline when the pipe joint nut (43) is in threaded connection with the straight pipe joint (41).
3. The diesel engine main bearing shell temperature monitoring device according to claim 2, characterized in that: the elastic material is fluororubber.
4. The diesel engine main bearing shell temperature monitoring device according to claim 1, characterized in that: the diesel engine also comprises a first wire harness fixing assembly (2) for horizontally fixing the wire harness (16) in the diesel engine.
5. The diesel engine main bearing shell temperature monitoring device according to claim 4, characterized in that: the first wire harness fixing component (2) comprises a support nut (21) and a circlip (22);
the upper part of the supporting nut (21) is of a cylindrical hollow structure, the inner wall surface of the supporting nut is provided with threads, the threads are used for connecting the tail end of a powerful stud at the lower end of the bearing cover, and the lower part of the supporting nut is provided with a wiring harness installation hole (211) and an elastic collar installation groove (212);
the wiring harness mounting hole (211) is used for a wiring harness (16) to horizontally pass through;
the elastic retainer ring mounting groove (212) is used for clamping and connecting the elastic retainer ring (22), and the elastic retainer ring (22) is used for preventing the wiring harness (16) from falling off from the wiring harness mounting hole (211).
6. The diesel engine main bearing shell temperature monitoring device according to claim 1, characterized in that: the diesel engine further comprises a second wire harness fixing component (3) for vertically fixing the wire harness (16) in the diesel engine.
7. The diesel engine main bearing shell temperature monitoring device according to claim 6, characterized in that: the second wire harness fixing component (3) comprises a fixing bracket (31) and a wire clamp (32);
the fixed bracket (31) is provided with a bracket mounting hole (312) and a fixed wire clamp mounting nut (313); the bracket mounting hole (312) is used for fixedly connecting the fixed bracket (31) in the diesel engine; the wire clamp mounting nut (313) is used for connecting a wire clamp (32);
the wire clamp (32) is a plate folded flat structure, the bent part is provided with a wire harness fixing hole (322), the flat plate part is provided with a wire clamp fixing hole (321) penetrating through the two layers of plates, and the wire clamp fixing hole (321) is used for penetrating through a bolt to be connected with the wire clamp mounting nut (313) so as to fix the wire clamp (32) on the wire clamp mounting nut (313); the wire harness fixing hole (322) is used for vertically clamping and fixing the wire harness (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122435852.1U CN216207096U (en) | 2021-10-08 | 2021-10-08 | Diesel engine main shaft bush temperature monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122435852.1U CN216207096U (en) | 2021-10-08 | 2021-10-08 | Diesel engine main shaft bush temperature monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216207096U true CN216207096U (en) | 2022-04-05 |
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ID=80862846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122435852.1U Active CN216207096U (en) | 2021-10-08 | 2021-10-08 | Diesel engine main shaft bush temperature monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216207096U (en) |
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2021
- 2021-10-08 CN CN202122435852.1U patent/CN216207096U/en active Active
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