CN219532306U

CN219532306U - Thermocouple for measuring bearing bush

Info

Publication number: CN219532306U
Application number: CN202320851624.9U
Authority: CN
Inventors: 文东海; 李渝东; 代勇; 黄圣付; 王强
Original assignee: Chongqing Magnesium Hao Trading Co ltd
Current assignee: Chongqing Magnesium Hao Trading Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-08-15
Anticipated expiration: 2033-04-17

Abstract

The utility model belongs to the technical field of temperature measurement, and particularly discloses a thermocouple for measuring a bearing bush, which comprises a temperature measuring device and a propping device, wherein the temperature measuring device comprises a thermocouple temperature measuring wire, the propping device is used for propping the thermocouple temperature measuring wire against the bearing bush, the propping device comprises a protective sleeve, a blocking piece and an elastic piece, a through groove is arranged in the protective sleeve, and the blocking piece can move in the through groove; the inside of the baffle is provided with a through hole for installing a thermocouple temperature measuring wire, and the end part of the thermocouple temperature measuring wire is fixed with the end part of the through hole; the elastic piece is positioned in the through groove, and two ends of the elastic piece are respectively connected with the protective sleeve and the blocking piece. The temperature measuring device of the technical scheme only comprises a protective sleeve, an elastic piece and a blocking piece, and is simple in structure and mounting mode by reasonably setting the aperture. The temperature measuring device can tightly support the bearing bush through the elastic piece, and the authenticity and reliability of measured data are ensured.

Description

Thermocouple for measuring bearing bush

Technical Field

The utility model belongs to the technical field of temperature measurement, and particularly relates to a thermocouple for measuring a bearing bush.

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 the bearing bush is poor, if lubrication is poor, or the friction pair between the crankshaft and the bearing bush generates high temperature due to poor use conditions or technical states of matched parts, so that serious faults such as axle locking and bearing bush and the like of the diesel engine are caused, and the service life of the diesel engine is directly influenced. In order to early warn serious faults and intervene as soon as possible, the influence of the working state of each diesel engine part on the temperature of the main shaft bushing is studied, and the temperature of the main shaft bushing of the diesel engine is required to be monitored.

The prior art discloses a patent with the bulletin number of CN216207096U and the name of a main shaft bush temperature monitoring device of a diesel engine, and particularly discloses 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 electrically connected 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 bush of the diesel engine; a guide groove is vertically arranged in the fixed joint, and a spring is arranged in the guide groove; one end of the fixed joint is provided with an external thread used for being connected with the lower end of the main bearing cap of the diesel engine, the middle of the fixed joint is provided with an external hexagonal 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 used for installing a compression nut; the compression nut is used for jacking and fastening the fixed spring from the lower part; the limiting round table is used for propping up the limiting spring from the upper part and limiting the extension amount of the temperature measuring probe to be overlarge by being matched with a step hole preset in the main bearing cap; the spring is used for driving the temperature measuring probe to tightly prop against the outer wall of the main shaft bush of the diesel engine through resilience force; the wire harness outlet assembly is arranged on the side wall of the engine body, used for leading out the wire harness from the side wall of the diesel engine, connected with an external temperature monitoring system and used for sealing an outlet.

The spring in the technical scheme is used for driving the temperature measuring probe to tightly prop against the outer wall of the main shaft bush of the diesel engine through resilience force, so that the authenticity and the reliability of measured data are ensured. However, the temperature measurement acquisition device is complex in structure and complex in installation and disassembly.

Disclosure of Invention

The utility model aims to provide a thermocouple for measuring a bearing bush, which aims to solve the problems that the structure of the existing temperature measurement acquisition device is complex and the installation and the disassembly are complex.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the thermocouple for measuring the bearing bush comprises a temperature measuring device and a propping device, wherein the temperature measuring device comprises a thermocouple temperature measuring wire, the propping device is used for propping the thermocouple temperature measuring wire against the bearing bush, the propping device comprises a protective sleeve, a blocking piece and an elastic piece, a through groove is formed in the protective sleeve, and the blocking piece can move in the through groove; the inside of the baffle is provided with a through hole for installing a thermocouple temperature measuring wire, and the end part of the thermocouple temperature measuring wire is fixed with the end part of the through hole; the elastic piece is positioned in the through groove, and two ends of the elastic piece are respectively connected with the protective sleeve and the blocking piece.

Further, the through groove comprises a sliding groove and a limiting groove which are communicated in sequence, the diameter of the sliding groove is smaller than that of the limiting groove, a stop block is arranged on the stop piece, one side of the stop piece is in sliding connection with the sliding groove, the other side of the stop piece extends out of the limiting groove, and the stop block is positioned in the limiting groove; the diameter of one side of the limiting groove far away from the sliding groove is smaller than the diameter of the stop block; the two sides of the elastic piece are respectively arranged at the bottom of the limiting groove and the stop block.

Further, the temperature measuring device further comprises an armor and two compensation wires, and two sides of the armor are respectively fixed with the two compensation wires and the thermocouple temperature measuring wire.

Further, a protection tube is arranged outside the connection position of the compensation wire and the armor.

Further, the protection pipe comprises a first pipe fitting and a second pipe fitting, the diameter of a first pipe hole in the first pipe fitting is larger than that of a second pipe hole in the second pipe fitting, the first pipe hole is used for passing through two compensating wires, and the second pipe hole is used for passing through the armor material; the sum of the diameters of the two compensating wires is larger than the diameter of the second pipe hole.

Further, a transition pipe is connected between the first pipe fitting and the second pipe fitting.

Further, the through hole of thermocouple temperature measurement line includes first through-hole and the second through-hole of intercommunication each other, and the diameter of first through-hole and the diameter of armor are all greater than the diameter of second through-hole, first through-hole is used for passing through the armor, the second through-hole is used for passing through thermocouple temperature measurement line.

The beneficial effects of this technical scheme lie in:

(1) the temperature measuring device of the technical scheme only comprises a protective sleeve, an elastic piece and a blocking piece, and is simple in structure and mounting mode by reasonably setting the aperture.

(2) According to the temperature measuring device, the bearing bush is tightly abutted through the elastic piece, and the authenticity and reliability of measured data are guaranteed.

(3) The protection tube of this technical scheme can protect the hookup location of compensation wire and armor.

Drawings

FIG. 1 is a schematic view of a thermocouple for measuring bearing bushes according to the present utility model;

FIG. 2 is a cross-sectional view of the abutment device of FIG. 1;

FIG. 3 is a schematic view of the structure of the protective sleeve in FIG. 2;

FIG. 4 is a schematic view of the stopper in FIG. 2;

fig. 5 is a cross-sectional view of the protective tube of fig. 1.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the device comprises a propping device 1, a armor material 2, a protection tube 3, a compensation lead 4, a protection sleeve 5, a blocking piece 6, an elastic piece 7, a sliding groove 8, a limiting groove 9, a first through hole 10, a stop block 11, a second through hole 12, a first pipe fitting 13, a transition tube 14, a second pipe fitting 15, a first tube hole 16 and a second tube hole 17.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment is basically as shown in the accompanying figures 1-5: the utility model provides a thermocouple of measurement axle bush, is shown as the fig. 1, includes temperature measuring device and supports tight device 1, and temperature measuring device includes thermocouple temperature measurement line, armor 2 and two compensation wires 4, and the both sides of armor 2 respectively with two compensation wires 4 and thermocouple temperature measurement line welded fastening. The protection tube 3 is arranged outside the connection position of the compensation wires 4 and the armor 2, as shown in fig. 5, the protection tube 3 comprises a first tube fitting 13 and a second tube fitting 15, a transition tube 14 is connected between the first tube fitting 13 and the second tube fitting 15, the diameter of a first tube hole 16 in the first tube fitting 13 is larger than that of a second tube hole 17 in the second tube fitting 15, the first tube hole 16 is used for passing through the two compensation wires 4, and the second tube hole 17 is used for passing through the armor 2; the sum of the diameters of the two compensating wires 4 is larger than the diameter of the second tube bore 17, i.e. the compensating wires 4 cannot pass through the second tube bore 17.

The abutting device 1 is used for abutting the thermocouple temperature measuring wire with the bearing bush, and as shown in fig. 2 and 3, the abutting device 1 comprises a protective sleeve 5, a blocking piece 6 and an elastic piece 7, a through groove is formed in the protective sleeve 5, and the blocking piece 6 can move in the through groove. As shown in fig. 3, the through groove comprises a chute 8 and a limit groove 9 which are communicated in sequence, and the diameter of the chute 8 is smaller than that of the limit groove 9. As shown in fig. 2 and 4, the blocking piece 6 is provided with a stop block 11, one side of the blocking piece 6 is slidably connected with the chute 8, the other side of the blocking piece 6 extends out of the limit groove 9, the stop block 11 is positioned in the limit groove 9, and the diameter of one side, away from the chute 8, of the limit groove 9 is smaller than that of the stop block 11, so that the blocking piece 6 is placed to slide out of the limit groove 9. As shown in fig. 4, the inside of the baffle 6 is provided with a through hole for installing a thermocouple temperature measuring wire, the through hole of the thermocouple temperature measuring wire comprises a first through hole 10 and a second through hole 12 which are communicated with each other, the diameter of the first through hole 10 and the diameter of the armor 2 are both larger than the diameter of the second through hole 12, the first through hole 10 is used for passing through the armor 2, and the second through hole 12 is used for passing through the thermocouple temperature measuring wire. The end of the thermocouple temperature measuring wire is welded and fixed with the right end of the second through hole 12. The elastic piece 7 is located in the limit groove 9, two sides of the elastic piece 7 are respectively arranged at the bottom of the limit groove 9 and on the stop block 11, and specifically the elastic piece 7 adopts a spring.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. A thermocouple for measuring a bearing bush, characterized in that: the device comprises a temperature measuring device and a propping device (1), wherein the temperature measuring device comprises a thermocouple temperature measuring wire, the propping device (1) is used for propping the thermocouple temperature measuring wire against a bearing bush, the propping device (1) comprises a protective sleeve (5), a blocking piece (6) and an elastic piece (7), a through groove is formed in the protective sleeve (5), and the blocking piece (6) can move in the through groove; a through hole for installing a thermocouple temperature measuring wire is formed in the baffle (6), and the end part of the thermocouple temperature measuring wire is fixed with the end part of the through hole; the elastic piece (7) is positioned in the through groove, and two ends of the elastic piece (7) are respectively connected with the protective sleeve (5) and the blocking piece (6).

2. A thermocouple for measuring bearing bushes according to claim 1, characterised in that: the through groove comprises a chute (8) and a limit groove (9) which are sequentially communicated, the diameter of the chute (8) is smaller than that of the limit groove (9), a stop block (11) is arranged on the stop piece (6), one side of the stop piece (6) is in sliding connection with the chute (8), the other side of the stop piece (6) extends out of the limit groove (9), and the stop block (11) is positioned in the limit groove (9); the diameter of one side of the limiting groove (9) far away from the sliding groove (8) is smaller than the diameter of the stop block (11); the two sides of the elastic piece (7) are respectively arranged at the bottom of the limit groove (9) and the stop block (11).

3. A thermocouple for measuring bearing bushes according to claim 1, characterised in that: the temperature measuring device further comprises an armor (2) and two compensation wires (4), wherein two sides of the armor (2) are respectively fixed with the two compensation wires (4) and the thermocouple temperature measuring wire.

4. A thermocouple for measuring bearing bushes according to claim 3, characterised in that: and a protective tube (3) is arranged outside the connection position of the compensation wire (4) and the armor (2).

5. A thermocouple for measuring bearing bushes according to claim 4, characterised in that: the protection pipe (3) comprises a first pipe fitting (13) and a second pipe fitting (15), wherein the diameter of a first pipe hole (16) in the first pipe fitting (13) is larger than that of a second pipe hole (17) in the second pipe fitting (15), the first pipe hole (16) is used for passing through two compensating wires (4), and the second pipe hole (17) is used for passing through the armor (2); the sum of the diameters of the two compensating wires (4) is larger than the diameter of the second pipe hole (17).

6. A thermocouple for measuring bearing bushes according to claim 5, characterised in that: a transition pipe (14) is connected between the first pipe fitting (13) and the second pipe fitting (15).

7. A thermocouple for measuring bearing bushes according to claim 3, characterised in that: the through hole of thermocouple temperature measurement line includes first through-hole (10) and second through-hole (12) of intercommunication each other, and the diameter of first through-hole (10) and the diameter of armor (2) are all greater than the diameter of second through-hole (12), first through-hole (10) are used for through armor (2), second through-hole (12) are used for through thermocouple temperature measurement line.