CN110388453A - An oil drain bolt for temperature measurement and a temperature measurement device including the bolt - Google Patents

Abstract

The invention discloses an oil drain bolt for temperature measurement and a temperature measurement device containing the bolt, in particular to a temperature measurement device capable of real-time monitoring of the oil temperature of engine oil and gearbox lubricating oil, which belongs to the technical field of engines. The oil drain bolt is a stud bolt with a flange-like structure in the radial direction, including an inner cylinder and an outer hexagonal head on both sides of the flange structure. The oil discharge bolt is provided along the axial direction of the oil discharge bolt with a variable cross-section installation cavity passing through the oil discharge bolt. The front part of the inner cylinder is an oil inlet cavity, and the center of the outer hexagonal head is an installation cavity, and the installation cavity communicates with the oil inlet cavity through a sealed connection cavity. At the same time, the invention also provides a temperature measuring device including the oil drain bolt. The temperature measuring device has the advantages of simple structure and convenient use. Through wireless measurement technology, real-time measurement and real-time transmission can be realized, which greatly reduces the difficulty of measurement. It can not only meet the requirements of test tests, but also meet the requirements of daily use of automobiles. .

Description

An oil drain bolt for temperature measurement and a temperature measurement device including the bolt

technical field

The invention relates to an oil drain bolt for temperature measurement and a temperature measurement device containing the bolt, in particular to a temperature measurement device capable of real-time monitoring of the oil temperature of engine oil and gearbox lubricating oil, which belongs to the technical field of engines.

Background technique

Engine oil is called engine oil, and gearbox oil is called transmission oil. Engine oil and transmission oil are the key factors affecting engine friction loss and oil consumption, and oil temperature has a great influence on the performance of engine oil/transmission oil. Therefore, it is of great significance to measure and control the oil temperature of the vehicle during driving or during the test.

The engine/gearbox complete machine test is an important means to verify the engine/gearbox design. The complete machine test has a long test period and high cost, but it is closer to the actual working conditions. During the test, the lubricating oil temperature is real-time monitoring data, which can ensure a good simulation of the test and the actual working conditions, and at the same time ensure the reliability of the test. The vehicle-level test is to verify the reliability and durability of components in the vehicle from the system integration level, and to measure the oil temperature during driving, which can provide data support for the display of oil temperature data and the reliable operation of the engine/gearbox.

At present, whether it is a complete machine test or a complete vehicle test, the measurement of oil temperature data requires a special sensor for measurement, and at the same time, a signal transmission line is used to transmit the temperature data to the signal receiving device. The use of signal transmission lines to transmit temperature data can only be applied to the test process, and cannot be applied to the oil temperature monitoring during normal use of the car.

Contents of the invention

In order to solve the problem that the temperature of the existing engine oil and gearbox lubricating oil cannot be monitored in real time, the present invention provides an oil drain bolt specially used for temperature measurement and a temperature measuring device containing the oil drain bolt. The technical scheme adopted is as follows:

An oil discharge bolt for temperature measurement, which is a stud bolt with a flange-like structure along the radial direction, including inner cylinders and outer hexagonal heads located on both sides of the flange structure; A variable cross-section installation cavity is provided axially through the oil discharge bolt; the front part of the inner cylinder is an oil inlet cavity 33; the center of the outer hex head is an installation cavity 35; the installation cavity 35 is connected to the inlet The oil chamber 33 communicates with the sealed connection chamber.

Preferably, an external thread 31 of an oil drain bolt is provided on the outer peripheral surface of the inner cylinder.

Preferably, the sealed connection cavity is provided with internal threads.

Preferably, the diameters of the oil inlet chamber 33 and the installation chamber 35 are larger than the diameter of the sealed connection chamber.

More preferably, the oil inlet cavity 33 communicates with the sealed connection cavity through a converging portion 34 in the shape of a truncated cone.

Preferably, an annular groove for installing the O-ring 6 is provided on the side of the flange structure facing the inner cylinder.

A temperature measuring device containing any of the above oil discharge bolts, the temperature measuring device includes a temperature measuring assembly 7 installed in the sealed installation cavity of the oil discharge bolt 3 and the installation cavity 35; the temperature measurement assembly includes a temperature sensor 71. Signal processing module 72, signal transmitting module 73 and power supply module 74; the temperature detection end of the temperature sensor 71 is fixedly connected to the front part of the sealed installation cavity and contacts the oil inlet cavity 33; the front part of the signal processing module 72 is in contact with the temperature sensor 71 is fixedly connected, the rear part is fixedly connected with the signal transmitting module 73, and the side is sealed and connected with the internal thread of the sealed installation cavity through the external thread provided with sealant; the signal transmitting module 73 is connected with the power supply module 74 and is located in the installation cavity within 35.

Preferably, the signal processing module 72 is provided with a cylindrical outer casing that cooperates with the sealed installation cavity, and a signal amplifier and a digital-to-analog converter installed inside the outer casing; the signal transmitting module 73 is provided with a wireless communication controller; The power supply module 74 is electrically connected with the wireless communication controller, digital-to-analog converter, signal amplifier and temperature sensor.

Preferably, the wireless communication controller realizes wireless communication through Bluetooth.

Preferably, the temperature measuring device further includes a signal receiving device and a signal output and display device connected to the signal transmitting module 73 through a signal.

Compared with prior art, the beneficial effect that the present invention obtains is as follows:

The temperature measuring device of the present invention does not require relatively large changes to the original structure, and has the advantages of simple structure and convenient use. The oil drain bolt is integrated with the temperature measurement component, and wireless measurement technology is used to realize real-time measurement and real-time transmission, greatly reducing the difficulty of measurement, which can not only meet the requirements of the test test, but also meet the requirements of the daily use of the car.

Description of drawings

Fig. 1 is a front structural schematic diagram of an oil drain bolt in a preferred embodiment of the present invention.

Fig. 2 is a cross-sectional view of the oil drain bolt along the axis in a preferred embodiment of the present invention (the temperature measuring assembly is not cut off).

Fig. 3 is a front view structural schematic diagram of a temperature measuring component in a preferred embodiment of the present invention.

Fig. 4 is a schematic top view structural diagram of the oil sump.

Fig. 5 is a schematic side view structural diagram of the oil sump.

Fig. 6 is a working principle diagram of a temperature measuring device in a preferred embodiment of the present invention.

Among them, 1, oil pan; 2, connecting bolt; 3, oil drain bolt; 4, connecting block; 5, sealing surface; 6, O-ring; 7, temperature measuring component; 31, external thread of oil drain bolt; 32 , outer hexagonal head; 33, oil inlet cavity; 34, converging part; 35, installation cavity; 71, temperature sensor; 72, signal processing module; 73, signal transmitting module; 74, power supply module.

Detailed ways

In the following description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "Top", "bottom", "inner", "outer" and "vertical" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus, should not be construed as limiting the invention.

In the following description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two parts. Those of ordinary skill in the art may understand the specific meanings of the above terms in the present invention based on specific circumstances.

In addition, in the following description of the present invention, unless otherwise specified, the meanings of "multiple", "multiple groups" and "multiple roots" are two or more.

The materials, reagents, devices, equipment, methods and control processes used in the following examples are common materials, reagents, devices, equipment, methods and control processes in the art without special instructions, and those skilled in the art can obtain them through commercial channels , or perform conventional settings according to specific needs, without creative labor.

The present invention will be further described below in conjunction with specific examples, but the present invention is not limited by the examples.

Fig. 1 is a front structural schematic diagram of an oil drain bolt in a preferred embodiment of the present invention. It can be seen from Fig. 1 that the oil drain bolt is a stud bolt structure with a flange structure in the middle along the radial direction. Wherein, the bottom is an outer hexagonal head 32, and the upper part is an inner cylinder. The outer thread 31 of the oil drain bolt is provided on the circumferential surface of the inner cylinder, so as to be connected with the oil pan 1 . At the same time, an O-ring 6 for sealing is embedded in an annular groove on the side of the flange structure near the inner cylinder.

Fig. 2 is a cross-sectional view of the oil drain bolt along the axis in a preferred embodiment of the present invention (the temperature measuring assembly is not cut off). It can be seen from FIG. 2 that the middle part of the oil drain bolt 3 is provided with a completely penetrating mounting cavity with a variable cross section. The installation cavity mainly has a cylindrical oil inlet chamber 33 at the top, a converging portion 34 in the shape of a truncated cone at the bottom of the oil inlet chamber 33, an installation chamber 35 at the bottom, and a sealed connection chamber connecting the installation chamber 35 and the convergence portion 34. The sealed connection cavity is cylindrical, and the inner wall is provided with an internal thread to cooperate with and seal the external thread of the temperature measuring component (shown by the dotted circle) installed therein. At the same time, the inner diameters of the oil inlet chamber 33 and the installation chamber 35 are basically the same, and the inner diameter of the sealed installation chamber is much smaller than the inner diameters of the oil inlet chamber 33 and the installation chamber 35 .

Fig. 3 is a front view structural schematic diagram of a temperature measuring component in a preferred embodiment of the present invention. As can be seen from FIG. 3 , the temperature measurement assembly consists of a temperature sensor 71 at the top, a signal processing module 72 at the temperature sensor 71 , a signal transmitting module 73 at the bottom of the signal processing module 72 , and a power supply module 74 at the bottom of the signal transmitting module 73 . Wherein, the signal processing module 72 is provided with a slender cylindrical outer casing, and a signal amplifier and a digital-to-analog converter are arranged inside the outer casing, and the signal transmitting module at the bottom is a communication controller that transmits signals wirelessly through Bluetooth. The power supply module 74 at the bottom is electrically connected with the above-mentioned temperature sensor, signal amplifier, digital-to-analog converter and communication controller, so as to provide power for the above-mentioned components. Among them, the temperature sensor can be a K-type thermocouple, the signal amplifier is a TLV9061 ultra-small operational amplifier; the digital-to-analog converter is a 12-bit DAC chip MCP4725; the wireless communication module is an ASK/FSK wireless transceiver module; the power supply module is a PAM8403D power supply micro digital power amplifier module. As for the specific circuit connection mode of the above-mentioned modules, those skilled in the art can make conventional settings according to the above description, requirements of specific working conditions and common knowledge.

Fig. 4 is a schematic top view structural diagram of the oil sump. Fig. 5 is a schematic side view structural diagram of the oil sump. It can be seen from Fig. 4 and Fig. 5 that the oil drain bolt is located at the bottom of the oil pan 1, and there are a plurality of connecting bolts 2 on the upper part of the oil pan 1, and the upper edge surface of the oil pan 1 is a sealing surface. The oil drain bolt 3 is fixedly connected with the oil pan 1 through the connecting block 4, so as to measure the temperature of the engine oil or lubricating oil in the oil pan.

Fig. 6 is a working principle diagram of a temperature measuring device in a preferred embodiment of the present invention. It can be seen from Fig. 6 that after the temperature sensor 71 measures the temperature and acquires the temperature signal, the electrical signal is converted into a digital quantity through signal amplification and digital-to-analog conversion, and the signal is transmitted through the communication controller (signal processing module) and Bluetooth BLE (signal transmitting module 73) After transmitting, at the signal receiving end, the signal is received by Bluetooth BLE, and then the data is processed, and finally the data interface can be output or displayed, so as to realize the real-time monitoring of the oil temperature in the oil pan.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore The scope of protection of the present invention should be defined by the claims.

Claims (10)

1. a kind of thermometric oil discharge screw, be in be radially equipped with the stud of class flange arrangement, including be located at flange arrangement The inner cylinder of two sides and outer-hexagonal head；It is characterized in that, being axially arranged with the variable cross-section of perforation oil discharge screw along oil discharge screw Mount type chamber；It is oil suction chamber (33) in the inner cylinder middle front part；It is installation cavity (35) in the outer-hexagonal head center；Institute It states installation cavity (35) and is connected to oil suction chamber (33) by being tightly connected chamber.

2. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that on the outer peripheral surface of the inner cylinder Equipped with oil discharge screw external screw thread (31).

3. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that the sealed connection chamber is equipped with interior spiral shell Line.

4. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that the oil suction chamber (33) and installation cavity (35) diameter is greater than the diameter for being tightly connected chamber.

5. a kind of thermometric oil discharge screw according to claim 4, which is characterized in that the oil suction chamber (33) and sealing connect Chamber is connect to be connected to by the convergent part (34) of truncated cone-shaped.

6. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that in flange arrangement towards inner cylinder Side is equipped with the annular groove for mounting O-shaped rings (6).

7. a kind of temperature measuring equipment containing any oil discharge screw of claim 1-6, which is characterized in that described including being installed on Temperature measurement component (7) in oil discharge screw (3) in sealing installation cavity and installation cavity (35)；The temperature measurement component includes temperature sensor (71), signal processing module (72), signal emission module (73) and power supply module (74)；Temperature sensor (71) temperature is visited Survey end is fixedly connected on sealing installation cavity front and contacts with oil suction chamber (33)；Signal processing module (72) front and temperature pass Sensor (71) is fixedly connected, and rear portion is fixedly connected with signal emission module (73), side by be equipped with sealant external screw thread with The internal screw thread for sealing installation cavity is tightly connected；The signal emission module (73) connect with power supply module (74) and is located at the peace It behave affectedly in (35).

8. temperature measuring equipment according to claim 7, which is characterized in that the signal processing module (72) is equipped with pacifies with sealing It behave affectedly the cylindrical shell body of mating connection, is installed on the signal amplifier and digital analog converter of interior of shell；The signal hair It penetrates and is equipped with wireless communication controller in module (73)；The power supply module (74) and the wireless communication controller, digital-to-analogue conversion Device, signal amplifier and temperature sensor are electrically connected.

9. temperature measuring equipment according to claim 7, which is characterized in that the wireless communication controller realizes nothing by bluetooth Line communication.

10. temperature measuring equipment according to claim 7, which is characterized in that further include passing through letter with signal emission module (73) Number connection signal receiving device and signal output and display device.