An integrated explosion-proof temperature sensor mounting structure and method for a gear box

Abstract

The application discloses an integrated explosion-proof temperature sensor mounting structure and method for a gear box, increases the overall rigidity of the integrated explosion-proof temperature sensor, and guarantees the measurement accuracy and smooth operation. The integrated explosion-proof temperature sensor mounting structure comprises a sensor body, a junction box, a connecting sleeve, a switching piece, a connecting sleeve pipe and a switching head. The inner hole of the switching head is sleeved on the sensor sleeve rod, and the outer circumferential surface of the switching head is threadedly matched with a locking nut. The inner hole of the connecting sleeve is a threaded hole, the junction box is provided with a junction box outer threaded connector, the inner hole of the connecting sleeve is threadedly matched and fixed with the junction box outer threaded connector and the switching piece, and the outer circumferential surface of the switching piece is threadedly matched with a locking nut. The connecting sleeve is provided with a locking sleeve, one end of the switching piece is provided with a switching piece outer threaded connector, the locking sleeve is threadedly connected with the switching piece outer threaded connector, and a sealing piece is arranged between the locking sleeve and the switching piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature sensors, in particular to an integrated explosion-proof temperature sensor mounting structure and method for a gear box. BACKGROUND

[0002] The variable speed gear box has become an indispensable device in the industrial production process because of its high transmission efficiency, low noise, large torque and other characteristics. In order to make the gear box safe and stable, the bearing temperature, shaft vibration and other data of the gear box are generally monitored in real time. When monitoring the bearing temperature of the gear box, especially in some places with high explosion-proof grade requirements, the bearing temperature measurement generally selects an integrated explosion-proof temperature sensor. The integrated explosion-proof temperature sensor has good explosion-proof characteristics, high precision, long service life and other characteristics.

[0003] However, due to the structure, the explosion-proof junction box is generally located at the top of the sensor sleeve rod, and in order to facilitate the inlet and outlet of the wire, the junction box is large, and when it is installed on the gear box bearing temperature sensor, it is easy to interfere with the gear box wall. In order to solve this problem, on the one hand, the distance between the bearing and the gear box wall can be increased to ensure that the junction box has enough space to install the wire, but this method will make the gear box size larger or the bearing span increase, which increases the cost of the gear box and the insecurity of the rotor operation. Therefore, at present, the problem of interference is generally solved by lengthening the rod length of the temperature sensor to make the sensor junction box higher than the gear box wall. After the sensor sleeve rod is lengthened, the stiffness of the entire sensor decreases, and due to the vibration of the gear box during operation, the sensor may shake or the sensor rod may bend, affecting the measurement accuracy of the sensor or even damaging it. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide an integrated explosion-proof temperature sensor mounting structure and method for a gear box, which increases the overall stiffness of the integrated explosion-proof temperature sensor and ensures its measurement accuracy and smooth operation.

[0005] The purpose of the present application is achieved as follows:

[0006] An integrated explosion-proof temperature sensor mounting structure for a gear box comprises a sensor body and a junction box, the wiring end of the sensor body is connected to the junction box, a sensor sleeve rod is sleeved on the probe end of the sensor body, the sensor sleeve rod supports the probe of the sensor body,

[0007] The adapter, the connecting sleeve and the adapter head are sequentially connected and fixed, the adapter and the adapter head are tubular, the outer periphery of the adapter is provided with external threads, the end of the adapter is sleeved on the connecting sleeve, the end of the connecting sleeve is sleeved on the adapter head, the inner hole of the adapter head is sleeved on the sensor sleeve rod in a clearance fit, the outer periphery of the adapter head is threadedly fitted with a locking nut, the adapter head is used for threadedly fitting with the gear box, and the locking nut is used for locking the adapter head;

[0008] The connecting sleeve is further provided with a threaded hole, the junction box is provided with a junction box external thread connector, one end of the inner hole of the connecting sleeve is threadedly fitted and fixed with the junction box external thread connector, the other end of the inner hole of the connecting sleeve is threadedly fitted and fixed with the outer periphery of the adapter, the outer periphery of the adapter is further threadedly fitted with a locking nut, and the locking nut is used for locking the positions of the connecting sleeve and the adapter;

[0009] The connecting sleeve is provided with a locking sleeve, the inner hole of the locking sleeve is a stepped hole, one end of the adapter is provided with an adapter external thread connector, the inner hole of the adapter external thread connector and the inner hole of the locking sleeve are respectively in sliding fit with the sensor sleeve rod, the large-diameter section of the inner hole of the locking sleeve is threadedly connected with the adapter external thread connector, a sealing element is arranged between the locking sleeve and the adapter, the sealing element is sleeved on the sensor sleeve rod, the stepped surface of the locking sleeve and the end surface of the adapter external thread connector jointly apply an axial force to the sealing element, and the sealing element seals the gap between the sensor sleeve rod and the adapter external thread connector.

[0010] Preferably, the adapter, the connecting sleeve and the adapter head are welded as a whole.

[0011] Preferably, the outer surface of the locking sleeve is hexagonal.

[0012] Preferably, the sealing element is made of an elastic material, and the cross section of the sealing element is arc-shaped.

[0013] Preferably, the connecting sleeve is made of a profiled steel pipe.

[0014] Preferably, the inner hole diameters of the connecting sleeve and the locking nut are greater than the outer diameter of the locking nut.

[0015] A mounting method of an integrated explosion-proof temperature sensor mounting structure for a gear box,

[0016] The connecting sleeve and the adapter head are welded and fixed;

[0017] The locking sleeve and the sealing element are sequentially sleeved on the sensor sleeve rod, and the locking sleeve and the sealing element are adjacent to the junction box external thread connector.

[0018] The connected adapter, connecting sleeve and adapter head are sleeved on the sensor sleeve rod, and the locking sleeve and the adapter are adjacent.

[0019] The connecting sleeve and the locking nut are sleeved on the sensor sleeve rod, and the connecting sleeve and the locking nut are sleeved on the connecting sleeve pipe, the locking sleeve is exposed, and then the locking nut is matched on the adapter;

[0020] The adapter is fixed by screwing, and the adapter is locked by rotating the locking nut;

[0021] The depth of the probe of the sensor body and the sensor sleeve rod inserted into the gear box is adjusted, and after adjustment,

[0022] The locking sleeve is screwed to make the locking sleeve and the adapter external thread connector threadedly connected, and the sealing element seals the gap between the sensor sleeve rod and the adapter external thread connector;

[0023] The connecting sleeve is screwed to make the connecting sleeve and the adapter and the junction box external thread connector threadedly connected, and the locking nut is used to lock the adapter and the connecting sleeve.

[0024] Due to the above technical scheme, the present application avoids the problems of sensor rod shaking or bending caused by the lengthening of the sensor rod, affects the measurement accuracy of the sensor or even damages it, increases the overall rigidity of the integrated explosion-proof temperature sensor, and ensures the measurement accuracy and smooth operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The figure is a schematic diagram of the overall composition of the sensor mounting structure;

[0026] Figure 2 The figure is Figure 1 An enlarged schematic diagram of the inside of the square box.

[0027] REFERENCE NUMERALS

[0028] In the figure, the sensor body and the junction box 1, the connecting sleeve 2, the locking sleeve 3, the sealing element 4, the adapter 5, the locking nut 6, the connecting sleeve pipe 7, the locking nut 8, and the adapter 9. DETAILED DESCRIPTION

[0029] The sensor body and the junction box 1 head are the junction box of the sensor, the junction box and the metal rod of the sensor (sensor sleeve rod) and the probe form an integral whole, the bottom of the junction box is provided with external threads (junction box external thread connector), the inner hole of the connecting sleeve 2 is provided with threads, the left end of the connecting sleeve 2 is threadedly connected with the bottom of the sensor body and the junction box 1, the right side is connected with the external threads of the adapter 5, the left side of the adapter 5 is provided with a small-diameter adapter external thread connector, the locking sleeve 3 is located in the connecting sleeve 2, the locking sleeve 3 has a stepped hole, the small-diameter section of the locking sleeve 3 is slidingly connected with the metal rod of the sensor, the large-diameter section of the locking sleeve 3 is threadedly connected with the adapter external thread connector, in order to facilitate tightening, the outer side of the locking sleeve 3 is hexagonal, the thread heads of the locking sleeve 3 and the adapter 5 are provided with a sealing element 4, the sealing element 4 is sleeved on the metal rod of the sensor, the stepped surface of the locking sleeve 3 compresses the sealing element 4 to compress the gap between the sensor rod and the adapter 5, so as to achieve the fixing and sealing effect, which can effectively prevent the overflow of lubricating oil, therefore, the sealing element 4 is generally made of a material with good compression and resilience, in order to reduce the cost as much as possible, the connecting sleeve 7 is generally made of a formed steel pipe, which is integrally connected with the adapter 5 and the adapter 9 through welding, the other end of the adapter 9 is connected with the gear box through threads, the locking nut 8 is locked and fixed, in order to facilitate installation, the inner holes of the connecting sleeve 2 and the locking nut 6 are larger than the outer diameter of the locking nut 8.

[0030] Before the sensor is installed, the adapter 9 is connected and fixed through welding and the processed adapter 5 and the connecting sleeve 7, the locking sleeve 3 and the sealing element 4 are sequentially installed on the sensor sleeve rod (the metal rod on the sensor probe) from the sensor metal rod and probe side, and the locking sleeve 3 and the sealing element 4 are slowly moved to the left side close to the sensor body and the bottom of the junction box 1, and the connecting sleeve 2 and the locking nut 6 are installed on the sensor sleeve rod according to the above method, and the position is in the connecting sleeve 7 section, and the locking nut 8 is screwed into the adapter 9; finally, the above assembled sensor installation structure is inserted into the gear box sensor installation hole, the adapter 9 is fixed with the gear box sensor installation hole by rotating the locking nut 8, the depth required for the metal rod and the probe to be inserted into the gear box is adjusted through the sensor body and the junction box 1, after the depth is confirmed, the locking sleeve 3 is connected with the adapter 5, the sealing element 4 is compressed, and the fixing and sealing effect is achieved; the connecting sleeve 2 is rotated until it is connected with the adapter 5, the bottom of the sensor body and the junction box 1, and the connecting sleeve 2 and the sensor body and the junction box 1 are locked and fixed by the locking nut 6. After the above connection, the sensor metal rod and the probe are not directly stressed, but the sensor body root thread, the sleeve and the adapter are stressed, the rigidity of the sensor is increased, the measurement accuracy and stable operation can be effectively guaranteed, and at the same time, since the connecting sleeve 2 and the adapter 5 cooperation section are threaded, the threaded cooperation length of this section can be adjusted to adapt to different insertion depths of the sensor metal sleeve rod and the probe, and the adjustability and interchangeability are good.

[0031] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. An integrated explosion-proof temperature sensor mounting structure for a gearbox, comprising a sensor body and a junction box, wherein the terminals of the sensor body are connected to the junction box, and a sensor sleeve is fitted onto the probe end of the sensor body, the sensor sleeve providing support for the probe of the sensor body, characterized in that: It also includes a converter (5), a connecting sleeve (7), and a converter (9) that are connected and fixed in sequence. The converter (5) and the converter (9) are tubular. The outer circumferential surface of the converter (5) is provided with external threads. The end of the converter (5) is fitted on the connecting sleeve (7), and the end of the connecting sleeve (7) is fitted on the converter (9). The inner hole of the converter (9) is fitted on the sensor sleeve rod with clearance. The outer circumferential surface of the converter (9) is threaded with a locking nut (8). The converter (9) is used to be threaded and fixed with the gearbox, and the locking nut (8) is used to lock the converter (9). It also includes a connecting sleeve (2), the inner hole of the connecting sleeve (2) is a threaded hole, the junction box is provided with a junction box external thread connector, one end of the inner hole of the connecting sleeve (2) is threadedly engaged with the junction box external thread connector, and the other end of the inner hole of the connecting sleeve (2) is threadedly engaged with the outer circumferential surface of the adapter (5). The outer circumferential surface of the adapter (5) is also threadedly engaged with a locking nut (6), which is used to lock the position of the connecting sleeve (2) and the adapter (5). The connecting sleeve (2) is provided with a locking sleeve (3). The inner hole of the locking sleeve (3) is a stepped hole. One end of the adapter (5) is provided with an adapter external thread connector. The inner hole of the adapter external thread connector and the small diameter section of the inner hole of the locking sleeve (3) are respectively slidably engaged with the sensor sleeve rod. The large diameter section of the inner hole of the locking sleeve (3) is threadedly connected to the adapter external thread connector. A sealing element (4) is provided between the locking sleeve (3) and the adapter (5). The sealing element (4) is sleeved on the sensor sleeve rod. The stepped surface of the locking sleeve (3) and the end face of the adapter external thread connector jointly apply axial force to the sealing element (4) so ​​that the sealing element (4) seals the gap between the sensor sleeve rod and the adapter external thread connector.

2. The integrated explosion-proof temperature sensor mounting structure for a gearbox according to claim 1, characterized in that: The adapter (5), connecting sleeve (7), and adapter (9) are welded together as one unit.

3. The integrated explosion-proof temperature sensor mounting structure for a gearbox according to claim 1, characterized in that: The outer surface of the locking sleeve (3) is hexagonal.

4. The integrated explosion-proof temperature sensor mounting structure for a gearbox according to claim 1, characterized in that: The seal (4) is made of elastic material and has an arc-shaped cross-section.

5. The integrated explosion-proof temperature sensor mounting structure for a gearbox according to claim 1, characterized in that: The connecting sleeve (7) is made of formed steel pipe.

6. The integrated explosion-proof temperature sensor mounting structure for a gearbox according to claim 1, characterized in that: The inner diameters of the connecting sleeve (2) and the locking nut (6) are both larger than the outer diameter of the locking nut (8).

7. A method for installing the integrated explosion-proof temperature sensor mounting structure for a gearbox as described in claim 1, characterized in that: Weld the connecting sleeve (7) to the adapter (5) and the adapter (9) respectively; Place the locking sleeve (3) and the sealing element (4) onto the sensor sleeve rod in sequence, so that the locking sleeve (3) and the sealing element (4) are adjacent to the external threaded connector of the junction box; Place the connected adapter (5), connecting sleeve (7), and adapter (9) onto the sensor sleeve rod, so that the locking sleeve (3) and adapter (5) are adjacent; Place the connecting sleeve (2) and locking nut (6) on the sensor sleeve rod, and let the connecting sleeve (2) and locking nut (6) be loosely placed on the connecting sleeve (7), exposing the locking sleeve (3). Then fit the locking nut (8) onto the adapter (9). The adapter (9) is fixed to the gearbox thread and locked by rotating the lock nut (8); Adjust the depth of the sensor probe and sensor sleeve inserted into the gearbox. Once adjusted, Rotate the locking sleeve (3) to make the locking sleeve (3) threadedly connected to the external threaded connector of the adapter, so that the sealing element (4) seals the gap between the sensor sleeve rod and the external threaded connector of the adapter; Rotate the connecting sleeve (2) to connect the connecting sleeve (2) to the adapter (5) and the external threaded connector of the junction box respectively, and use the lock nut (6) to lock the adapter (5) and the connecting sleeve (2).

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