Special sleeve for sensor

Abstract

The utility model discloses a special sleeve for a sensor, which is used for fastening the sensor on a shell of a coal mining machine and comprises a sleeve body sleeved outside the sensor. A handle mounted on the sleeve body to facilitate operation of the sleeve body; and the open slot is formed in the side wall of the sleeve body, is communicated with the counter bore and is used for allowing a cable of the sensor to penetrate out. The sleeve special for the sensor is simple in structure, convenient to use, capable of fastening the sensor at the needed position of a coal mining machine shell, good in fastening effect, free of cable damage and real and reliable in detection data.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a special sleeve for a sensor used for fastening a sensor on a shell of a coal mining machine. Background Art

[0002] At present, most domestic coal mining machines can realize coal mining automation, which requires a lot of sensor devices. Since the domestic coal resources and coal seams are generally low and the space is limited, the installation location of the sensor will be greatly limited. For example, the sensors used to detect the oil temperature, oil pressure, grease, etc. of the hydraulic oil when the coal mining machine is working are generally installed in the coal mining machine housing, but the coal mining machine housing is generally thick. During installation, it is necessary to first drill a deeper countersunk hole on the housing, and then drill a screw hole at the bottom of the hole for the installation of the sensor.

[0003] Due to the limitation of installation location and the fact that most sensors have cables, such as Figure 1 、 Figure 2 The oil sensor shown includes a sensor probe 4, a cable 6, and a sensor nut 5. During installation, conventional techniques use a standard socket wrench over the sensor nut to mount the sensor on the shearer housing. However, this standard socket wrench cannot bypass the cable for tightening, resulting in poor tightening and easily damaging the cable. Furthermore, the sensor requires as much contact as possible with the oil pool within the housing to ensure the authenticity and reliability of the test data. If the sensor is not properly tightened on the housing, the sensor probe will not be able to reliably contact the oil pool, affecting the authenticity of the test data. Therefore, there is an urgent need in the art for a specialized tool for tightening sensors on coal shearers. Summary of the Invention

[0004] The purpose of this utility model is to solve the above problems and provide a special sleeve for sensors, which has a simple structure and is easy to use. The sensor can be fastened to the required position of the coal mining machine housing with good fastening effect, will not damage the cable, and the detection data is true and reliable.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a special sleeve for a sensor, which is used to fasten the sensor to the coal mining machine housing, including: a sleeve body for being sleeved outside the sensor; a handle installed on the sleeve body to facilitate operation of the sleeve body; and an open groove opened on the side wall of the sleeve body and connected to the countersunk hole for allowing the cable of the sensor to pass through.

[0006] Preferably, the sleeve body is provided with a countersunk hole with an opening at one end thereof and extending axially toward the other end.

[0007] Preferably, the countersunk hole is a hexagonal countersunk hole matched with the sensor nut of the sensor.

[0008] Preferably, a plurality of groups of through holes are provided on the outer wall of the sleeve body close to the other end, and the handle can pass through any group of through holes.

[0009] Preferably, the length of the opening groove is equal to or less than the length of the countersunk hole.

[0010] Preferably, the end of the opening slot is semicircular.

[0011] Compared with the prior art, the sensor-specific sleeve of the present invention has the following beneficial effects:

[0012] 1. The sensor-specific sleeve of the utility model has a simple structure and is easy to use. The sensor can be fastened to the required position of the coal mining machine housing with good fastening effect, will not damage the cable, and the detection data is true and reliable.

[0013] 2. The sensor-specific sleeve of the present invention is provided with an open groove on the sleeve body for the cable at the tail end of the sensor to pass through. Therefore, when the sensor is installed at the required position of the coal mining machine shell through the sleeve body, the cable can pass through the open groove without affecting the fastening of the sleeve body to the sensor, and the cable will not be damaged. Therefore, it will not affect the depth of the sensor probe inserted into the oil pool, so that the sensor's detection of parameters such as oil temperature, oil pressure, grease, etc. is true and reliable, ensuring that the coal mining machine works reliably and safely.

[0014] 3. The sensor-specific sleeve of the utility model has multiple pairs of through holes on the sleeve body. When the sensor is fastened to the coal mining machine housing, the handle can be inserted into any group of through holes as needed, thereby increasing the torsional torque on the sensor and facilitating the replacement of the installation angle at any time, making the installation faster and more efficient.

[0015] The present invention will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of sensors used by a prior art coal mining machine to detect oil temperature, oil pressure, grease, etc.

[0017] Figure 2 for Figure 1 A front view of the sensor shown;

[0018] Figure 3 This is the main view of the special sleeve for the sensor of the utility model;

[0019] Figure 4 This is a perspective view of the sensor-specific sleeve of the utility model;

[0020] Figure 5 This is the main view of the sensor placed in the sensor-specific sleeve;

[0021] Figure 6 It is a perspective view of the sensor placed in the sensor-specific sleeve;

[0022] Figure 7 This is the main view of the sensor being installed in the rocker gear cavity housing of the coal mining machine through the sensor's special sleeve;

[0023] Figure 8 This is a perspective view of installing the sensor in the rocker gear cavity housing of a coal mining machine through a special sensor sleeve. DETAILED DESCRIPTION

[0024] like Figure 3 、 Figure 4 As shown in the figure, it is a schematic diagram of the structure of the sensor-specific sleeve of the utility model for fastening the sensor to the coal mining machine housing. As can be seen from the figure, in order to fasten the sensor in the narrow space of the coal mining machine housing and prevent the cable from being damaged, the sensor-specific sleeve of the utility model includes: a sleeve body 1 for being sleeved outside the sensor; a handle 2 installed on the sleeve body to facilitate operation of the sleeve body; an open groove 3 opened on the side wall of the sleeve body and connected to the countersunk hole for allowing the sensor cable to pass through.

[0025] Specifically, the sleeve body of the present invention is provided with a countersink with an opening located at the center of one end thereof and extending axially toward the other end. The countersink is a stepped hole having a hexagonal countersink for use with the sensor nut 6 to be installed (see Figure 4 、 Figure 6 ). Among them, the structure of the countersunk hole on the sleeve body can refer to the structure of the countersunk hole on the sleeve in the prior art, and will not be described in detail here.

[0026] In order to avoid damaging the cable 5 at the tail end when installing the sensor, an open groove connected to the countersunk hole is opened on one side wall of the sleeve body, so that when the rear part of the sensor is inserted into the sleeve body, the cable at the tail end of the sensor can pass outward through the open groove.

[0027] The opening slot is designed to be U-shaped, with the length extending axially along the sleeve body being slightly less than the length of the counterbore, or alternatively, equal to the length of the counterbore. Furthermore, the end of the opening slot may be semicircular. Preferably, the width of the opening slot is slightly greater than the diameter of the cable, and the diameter of the semicircular arc at the end of the opening slot is slightly greater than the cable diameter.

[0028] In order to increase the torque when fastening the sensor to the housing and facilitate changing the installation angle, making installation faster and more efficient, the utility model has multiple sets of through holes 2a that penetrate the sleeve body on the outer wall of the end without the countersunk hole. The multiple sets of through holes can be evenly distributed at equal angles around the outer wall of the sleeve body. When fastening the sensor to the coal mining machine housing, the handle can be inserted into any set of through holes as needed. The handle can be a straight rod with a round or square top cap fixed at one end. The diameter of the straight rod is smaller than the diameter of the through hole, while the outer contour of the top cap is larger than the diameter of the through hole. In this way, after the handle passes through the set of through holes, the top cap is exposed outside the sleeve body, preventing the handle from loosening from the sleeve body.

[0029] Next, combine Figures 1-8 The process of fastening the sensor to the rocker gear cavity housing of the coal mining machine by using the special sleeve for the sensor of the utility model is briefly described.

[0030] The sensor is pre-installed into a pre-cut stepped hole in the rocker gear housing (the structure of cutting a stepped hole in the housing is conventional and will not be described in detail here). The sensor probe 4 is inserted into the gear cavity in the housing through the smaller diameter hole of the stepped hole to contact the oil, and the sensor nut is placed on the step of the stepped hole. The sleeve body is clamped onto the sensor nut 6 (the nut is an external hexagonal bolt, and the sleeve body has a corresponding internal hexagonal countersunk hole). The cable 5 at the end of the sensor is extended out of the sleeve body through the open slot of the sleeve body and exposed outside the housing. Then, the handle is inserted through the appropriate set of through holes and the sensor is tightened to the housing using the handle.

[0031] It can be seen that the sensor-specific sleeve of the present invention has an open slot on the sleeve body for the cable at the tail end of the sensor to pass through. Therefore, when the sensor is installed at the desired position on the coal mining machine housing through the sleeve body, the cable can pass through the open slot without affecting the fastening of the sleeve body to the sensor, nor will it affect the depth of the sensor probe inserted into the oil pool, thereby making the sensor's detection of parameters such as oil temperature, oil pressure, and grease true and reliable. In addition, the multiple pairs of through holes opened on the sleeve body allow the handle to be inserted into any pair of through holes as needed when the sensor is fastened to the coal mining machine housing, thereby increasing the torsional torque on the sensor and facilitating the replacement of the installation angle at any time, making installation faster and more efficient.

[0032] Although the utility model is described in detail above, the utility model is not limited thereto. Those skilled in the art can make modifications based on the principles of the utility model. Therefore, all modifications made in accordance with the principles of the utility model should be understood to fall within the scope of protection of the utility model.

Claims

1. A sensor-specific sleeve, used to fasten the sensor to a coal mining machine housing, characterized in that: include: A sleeve body for being sleeved outside the sensor; A handle mounted on the sleeve body to facilitate operation of the sleeve body; An open groove is provided on the side wall of the sleeve body and communicated with the counterbore for allowing the cable of the sensor to pass through.

2. The sensor-specific sleeve according to claim 1, characterized in that: The sleeve body is provided with a countersunk hole with an opening at one end thereof and extending axially toward the other end.

3. The sensor-specific sleeve according to claim 2, characterized in that: The countersunk hole is a hexagonal countersunk hole matched with the sensor nut of the sensor.

4. The sensor-specific sleeve according to claim 3, characterized in that: A plurality of groups of through holes are arranged on the outer wall of the sleeve body close to the other end, and the handle can pass through any group of through holes.

5. The sensor-specific sleeve according to claim 4, characterized in that: The length of the opening slot is equal to or less than the length of the counterbore.

6. The sensor-specific sleeve according to claim 5, characterized in that: The end of the opening slot is in a semicircular arc shape.

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