Mounting structure of temperature sensor of tail shaft rear bearing

Abstract

The utility model discloses an installation structure of a stern shaft rear bearing temperature sensor, which comprises a stern tube, a plurality of fixing supports, a first protection tube for the rear bearing temperature sensor to penetrate through and a second protection tube for the stern shaft to penetrate through, the plurality of fixing supports are sequentially arranged in the stern tube at intervals, and each fixing support is provided with a transverse through hole. The fixing support is provided with a transverse through hole, the first protection tube is inserted into the transverse through hole in a penetrating mode, the second protection tube is fixed into the stern tube, the central axis of the second protection tube coincides with the central axis of the stern tube, and a gap is formed between the outer wall of the second protection tube and the fixing support. The problem that the stern shaft rear bearing temperature sensor is not easy to install and fix is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stern shaft technology field especially is related to a mounting structure of stern shaft rear bearing temperature sensor. BACKGROUND

[0002] The stern shaft bearing is an important part of the ship propulsion system, and its working condition directly affects the safety of the ship sailing. By measuring the bearing temperature regularly, abnormal conditions such as bearing overheating can be found in time, and bearing damage caused by high temperature can be avoided, so as to ensure the normal operation and safe navigation of the ship. Abnormal rise of bearing temperature is often a precursor of failure. By monitoring the bearing temperature, early warning can be made, and appropriate maintenance measures can be taken to prevent greater failure caused by bearing overheating and reduce maintenance cost and downtime. The temperature of the stern shaft bearing is usually measured by installing a temperature sensor. However, the stern shaft bearing temperature sensor is not easy to install. The stern shaft bearing is often installed in the shaft hub, and the shaft hub is welded with the protection pipe. In particular, the installation of the stern shaft rear bearing temperature sensor is difficult because the rear end surface of the rear shaft hub is outside the hull plate, and the stern shaft bearing temperature sensor cannot be installed directly from the stern. Therefore, the rear bearing temperature sensor often needs to be inserted from the front shaft hub, pass through the stern pipe to the rear bearing position, and the cable of the rear bearing temperature sensor often needs to be several meters long. The gap between the stern pipe and the stern shaft is often small, making it difficult to install and fix the rear bearing temperature sensor. SUMMARY

[0003] In view of the defects in the prior art, the utility model provides a mounting structure of stern shaft rear bearing temperature sensor to solve the problem of difficult installation and fixation of the rear bearing temperature sensor.

[0004] The utility model adopts the following technical scheme:

[0005] A mounting structure of stern shaft rear bearing temperature sensor, comprising a stern pipe, a plurality of fixed supports, a first protection pipe for the rear bearing temperature sensor, and a second protection pipe for the stern shaft, the plurality of fixed supports are sequentially and spacedly arranged in the interior of the stern pipe, each of the fixed supports is provided with a transverse through hole, the first protection pipe is inserted into the transverse through hole, the second protection pipe is fixed in the interior of the stern pipe, the center axis of the second protection pipe coincides with the center axis of the stern pipe, and there is a gap between the outer wall of the second protection pipe and the fixed support.

[0006] Further, the tail end of the second protection pipe has an outwardly expanding flared portion.

[0007] Further, the flared portion and the tail end of the second protection pipe are connected by a circular arc.

[0008] Further, the flared portion and the second protection pipe are integrally formed.

[0009] Further, the thickness of the second protection pipe is 1-2mm.

[0010] Further, two ends of the second protection pipe are fixed in the stern tube by support steel plates respectively.

[0011] Further, the second protection pipe is made of stainless steel.

[0012] Further, the stern tube is provided with a plurality of spaced apart openings, the plurality of openings correspond to the plurality of fixing supports one by one, the fixing support is inserted into the stern tube from the opening, and the fixing support is fixed with the stern tube by welding.

[0013] Compared with the prior art, the beneficial effects of the utility model at least include:

[0014] The first protection pipe extends from the front shaft hub to the stern tube, and reaches the rear shaft hub after passing through the transverse through hole of the fixing support in sequence, the transverse through hole plays a guiding and positioning role, so that the pipe penetrating efficiency of the first protection pipe can be improved and the pipe penetrating difficulty can be reduced, so that the smooth installation and fixation of the rear bearing temperature sensor are realized, and the operation labor intensity of the operating personnel is reduced. Since the fixing support is arranged in the stern tube, in order that the fixing support does not scratch the stern shaft, the second protection pipe is arranged in the stern tube, so that the accident that the stern shaft collides with the fixing support in the stern tube during the installation of the stern shaft can be effectively avoided, and the safety and reliability of the stern shaft into the stern tube are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is the installation structure of the stern shaft rear bearing temperature sensor of the utility model embodiment, and is a schematic view of the installation structure of the stern shaft rear bearing temperature sensor of the utility model embodiment;

[0016] Fig. 2 is a partial schematic view of the utility model embodiment;

[0017] Fig. 3 is one of the sectional views of the fixing support of the utility model embodiment;

[0018] Fig. 4 is the second sectional view of the fixing support of the utility model embodiment;

[0019] In the drawing: 1, stern tube; 2, fixing support; 20, transverse through hole; 3, first protection pipe; 4, second protection pipe; 41, flared portion; 5, support steel plate; 6, rear shaft hub; 7, front shaft hub. DETAILED DESCRIPTION

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0021] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0022] like Figs. 1 to 4 As shown, this utility model provides an installation structure for a stern shaft aft bearing temperature sensor, including a stern tube 1, several fixed brackets 2, a first protective tube 3 for the aft bearing temperature sensor to pass through, and a second protective tube 4 for the stern shaft to pass through. The several fixed brackets 2 are arranged sequentially at intervals inside the stern tube 1. Each fixed bracket 2 has a transverse through hole 20. The first protective tube 3 is inserted into the transverse through hole 20. The second protective tube 4 is fixed inside the stern tube 1. The central axis of the second protective tube 4 coincides with the central axis of the stern tube 1. There is a gap between the outer wall of the second protective tube 4 and the fixed bracket 2.

[0023] In this embodiment, the front end of the stern tube 1 is connected to the front axle hub 7, and the rear end of the stern tube 1 is connected to the rear axle hub 6. A rear bearing is installed inside the rear axle hub 6, and a rear bearing temperature sensor is installed inside the first protective tube 3. The first protective tube 3 transmits the rear bearing temperature sensor to the rear bearing inside the rear axle hub 6. The first protective tube 3 extends from the front axle hub 7 into the stern tube 1, and passes through the transverse through-hole 20 of the fixing bracket 2 to reach the rear axle hub 6. The transverse through-hole 20 serves as a guide and positioning device, which improves the efficiency and reduces the difficulty of inserting the first protective tube 3, thereby enabling the smooth installation and fixation of the rear bearing temperature sensor and reducing the labor intensity of the operators. Furthermore, since the fixing bracket 2 is installed inside the stern tube 1, a second protective tube 4 is installed inside the stern tube 1 to prevent the fixing bracket 2 from scratching the stern shaft. This effectively prevents the stern shaft from colliding with the fixing bracket 2 inside the stern tube 1 during installation, greatly improving the safety and reliability of the stern shaft entering the stern tube 1.

[0024] In a preferred embodiment, the tail end of the second protective tube 4 has an outwardly expanding flared portion 41. The design of the flared portion 41 prevents it from colliding with the second protective tube 4 when passing through the stern shaft.

[0025] As a preferred embodiment, the flared portion 41 and the tail end of the second protective pipe 4 are connected by a circular arc transition. By adopting the design of circular arc transition, the propeller shaft is further protected, so as to improve the safety and reliability of the propeller shaft passing through the stern tube 1.

[0026] As a preferred embodiment, the flared portion 41 and the second protective pipe 4 are integrally formed. In this way, the production and processing are facilitated, and the manufacturing cost is reduced.

[0027] As a preferred embodiment, the thickness of the second protective pipe 4 is 1-2mm.

[0028] As a preferred embodiment, the two ends of the second protective pipe 4 are respectively fixed in the stern tube 1 by the support steel plates 5. The fixing of the second protective pipe 4 is realized by the support steel plates 5, which has a simple structure and is convenient to assemble.

[0029] As a preferred embodiment, the second protective pipe 4 is made of stainless steel. The second protective pipe 4 made of stainless steel has high strength and improves the protection performance. Of course, in other embodiments, the second protective pipe 4 can also be made of other materials.

[0030] As a preferred embodiment, the stern tube 1 is provided with a plurality of spaced apart openings, and the plurality of openings correspond one by one to the plurality of fixing supports 2. The fixing support 2 is inserted into the stern tube 1 from the opening, and the fixing support 2 is fixed to the stern tube 1 by welding. In this embodiment, the fixing support 2 is first inserted into the stern tube 1 from the opening, and then the fixing support 2 and the stern tube 1 are fixed by welding, so as to realize the convenient installation of the fixing support 2.

[0031] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments without departing from the principles and purposes of the utility model, and all these changes should belong to the protection scope of the utility model claim.

Claims

1. A mounting structure for a stern shaft aft bearing temperature sensor, characterized in that, The device includes a stern tube (1), several fixed supports (2), a first protective tube (3) for the rear bearing temperature sensor to pass through, and a second protective tube (4) for the stern shaft to pass through. Several fixed supports (2) are arranged sequentially and at intervals inside the stern tube (1). Each fixed support (2) has a transverse through hole (20). The first protective tube (3) is inserted into the transverse through hole (20). The second protective tube (4) is fixed inside the stern tube (1). The central axis of the second protective tube (4) coincides with the central axis of the stern tube (1). There is a gap between the outer wall of the second protective tube (4) and the fixed support (2).

2. The mounting structure of the stern shaft rear bearing temperature sensor according to claim 1, characterized in that, The tail end of the second protective tube (4) has an outwardly expanding flared portion (41).

3. The mounting structure for the stern shaft rear bearing temperature sensor according to claim 2, characterized in that, The flared part (41) and the tail end of the second protective tube (4) are connected by a rounded transition.

4. The mounting structure of the stern shaft rear bearing temperature sensor according to claim 2, characterized in that, The flared part (41) and the second protective tube (4) are integrally molded.

5. The mounting structure of the stern shaft rear bearing temperature sensor according to claim 1, characterized in that, The thickness of the second protective tube (4) is 1-2 mm.

6. The mounting structure for the stern shaft aft bearing temperature sensor according to claim 1, characterized in that, The two ends of the second protective tube (4) are fixed inside the stern tube (1) by supporting steel plates (5).

7. The mounting structure for the stern shaft aft bearing temperature sensor according to claim 1, characterized in that, The second protective tube (4) is made of stainless steel.

8. The mounting structure of the stern shaft rear bearing temperature sensor according to claim 1, characterized in that, The stern tube (1) has a plurality of spaced openings, each of which corresponds to a plurality of fixed brackets (2). The fixed brackets (2) are inserted into the stern tube (1) through the openings and are fixed to the stern tube (1) by welding.

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