Hub bearing temperature monitoring and alarming device for semitrailer hub system

Abstract

The utility model relates to a hub bearing temperature monitoring and alarming device for a semitrailer hub system, which comprises an axle shaft head and a trailer hub, a transverse eccentric drill hole is preset at the end part of the axle shaft head close to the outer wall of the axle shaft head, and a temperature sensor is fixedly arranged in the transverse eccentric drill hole. The temperature sensor is in a Z-shaped bent hook shape and comprises a temperature probe body installed in the transverse eccentric drill hole and a bent antenna exposed outside the axle shaft head, and a temperature probe, an information processing module and a signal transmitting module are arranged on the temperature probe body. The bent antenna comprises a transverse section antenna and a bent connection section antenna which are connected together, the transverse section antenna and an axle shaft head are separated from each other and are coaxially arranged, the bent connection section antenna is connected with the temperature probe body, and the temperature sensor adopts an integrated Z-shaped bent belt hook design. The bending section of the antenna and the shaft head can be ensured to be coaxial, so that interference with an end cover rotating at the same time of the hub is avoided.

Description

Technical Field

[0001] The present invention relates to automotive parts, and particularly to a hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system. Background Art

[0002] The hub bearing is a key component in the automotive transmission system, and its working performance directly affects the driving safety of the vehicle. When the temperature of the hub bearing is too high, it will cause the lubricating oil to fail, the bearing wear to increase, and even serious accidents such as fires may occur. By real-time monitoring the temperature of the hub bearing, abnormal situations can be detected in time, and corresponding measures can be taken to avoid the occurrence of faults. There are also hub temperature monitoring systems in the prior art, but due to the insufficiently strong and firm structure, it is easy to damage the temperature sensor. Therefore, it is extremely necessary to have a hub bearing temperature monitoring and alarming device for automotive wheels with high strength, more stable structure, safety, and accuracy.

[0003] For example, a kind of axle hub temperature monitoring mechanism and axle hub temperature monitoring system with the publication number of CN2-10970940U includes a hub. The hub is an integral hub, including a sleeve 1 for fixing the outer ring of the bearing and a flange ring 4 for connecting the rim through bolts 6 and integrally connected with the sleeve. The outer end of the sleeve 1 is fixedly provided with a bridge housing end cover 7. At least one radially extending threaded mounting hole 3 is arranged along the circumferential direction on the sleeve. Two threaded mounting holes are provided, and the threaded mounting holes are through holes. In other embodiments, one, 3 or more can be set according to the detection needs or redundant design. The detection end of the wireless temperature sensor 5 has an external thread on the circumferential cylindrical protective shell (not shown in the figure). The wireless temperature sensor is screwed into the corresponding threaded mounting hole through the external thread. The outer peripheral surface of the sleeve is a wave-shaped or gear-shaped convex and concave pattern along the circumferential direction, and the threaded mounting hole is arranged at the concave part 2 of the outer peripheral surface. The prior art judges the temperature of the hub, bearing installation, lubricating oil / grease by monitoring the temperature of the sleeve or the outer ring of the bearing of the hub. However, since the protection measure of the sensor is to protect the head of the sensor through a plastic protective cover, the protection strength is very low. Once the plastic protective cover is damaged, the sensor is very easy to be damaged.

[0004] Wheel end temperature collector, wheel end temperature monitoring system and axle assembly with the publication number CN2-18171925U, comprising a heat conducting plate, a temperature measuring box, a bracket and an antenna; wherein, the heat conducting plate and the temperature measuring box are fixedly connected, the temperature measuring box is connected to the bracket, and the antenna is connected to the bracket; a temperature sensing chip is arranged in the temperature measuring box, the temperature sensing chip is connected to the antenna, grooves for accommodating the temperature measuring box and card slots for accommodating the antenna are respectively arranged at both ends of the bracket, and the grooves and the card slots are communicated by a pore channel; the temperature measuring box is fixedly connected to the heat conducting plate and embedded in the groove at the end of the bracket, the antenna is fixed in the card slot at the other end of the bracket, a temperature sensing chip is arranged in the temperature measuring box, and the transmission wire of the temperature sensing chip penetrates into the internal pore channel of the bracket. Directly fixing the temperature sensor on the brake mounting plate is not stable and is very easy to be damaged by sundries and gravel. Summary of the Invention

[0005] Therefore, the present invention aims to provide a hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system, which can more safely, accurately and stably monitor the temperature of the hub bearing in real time, give an alarm when the bearing temperature is abnormal, and ensure the driving safety of the vehicle.

[0006] The present invention adopts the following technical scheme: A hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system, comprising a vehicle axle head and a trailer wheel hub movably connected thereto, a hub bearing is installed between the trailer vehicle axle head and the trailer wheel hub, an axle head nut for clamping the inner ring of the hub bearing is sleeved on the vehicle axle head, a transverse eccentric drill hole is preset near the outer wall at the end of the vehicle axle head, the depth of the transverse eccentric drill hole exceeds the width of the axle head nut and extends into the inner circle of the hub bearing, a temperature sensor is fixedly installed in the transverse eccentric drill hole, the temperature sensor adopts a "Z"-shaped bent hook shape, the temperature sensor comprises a temperature probe body inserted into the transverse eccentric drill hole and a bent antenna exposed outside the vehicle axle head, a temperature probe, an information processing module and a signal transmitting module are arranged on the temperature probe body, the bent antenna comprises a transverse section antenna and a bent connecting section antenna connected together, the transverse section antenna is separated from the vehicle axle head and is coaxially arranged, and the bent connecting section antenna is connected to the temperature probe body;

[0007] A further preferred scheme of the present invention is that a shielding prevention shell assembly that rotates synchronously with the axle head around the hub is fixed at the end of the trailer wheel hub, the shielding prevention shell assembly comprises a metal end cover that covers the end of the vehicle axle head, the end of the trailer wheel hub and the axle head nut, an antenna transmitting hole for the transverse section antenna of the bent antenna to pass through is arranged in the middle of the metal end cover, and a plastic plug cover for covering the antenna is installed in the antenna transmitting hole;

[0008] A further preferred embodiment of the present invention is that the temperature sensor is fixed to the axle head to form an integral body and is in a relatively stationary state. The temperature sensor monitors the temperature information of the hub bearing in the hub system through a temperature probe. After being processed by the information processing module, the temperature information is wirelessly transmitted by a bent antenna and received and processed by a central processor arranged in the trailer cab for alarm or display.

[0009] A further preferred embodiment of the present invention is that the plastic plug cover is cylindrical, with an opening at one end and a bottom at the other end. An annular clamping platform is provided on the outer wall of the plastic plug cover, which can be clamped on the outer hole wall of the antenna emission hole that forms a circle and can clamp the metal end cover. An external thread is provided on the outer wall of the plastic plug cover near the opening side, and a locking nut that can clamp the inner hole wall of the antenna emission hole of the metal end cover is screwed through this external thread.

[0010] A further preferred embodiment of the present invention is that a circular accommodating groove is provided on the inner surface of the annular clamping platform near the outer wall of the cylinder, and an O-ring is placed in the circular accommodating groove for end face sealing.

[0011] A further preferred embodiment of the present invention is that an internal thread is provided on the inner wall of a laterally eccentric drilled hole of the temperature sensor and the axle head. An external thread connected to the internal thread of the laterally eccentric drilled hole is provided on the outer wall of the temperature probe body of the temperature sensor, and thread locking glue is applied at the thread position.

[0012] A further preferred embodiment of the present invention is that a repeater is also wirelessly connected between the temperature sensor and the central processor. The repeater is installed at the bottom or the tail of the trailer. The repeater receives the temperature information sent from the bent antenna of the temperature sensor, amplifies and processes the signal, and then sends it to the central processor.

[0013] A further preferred embodiment of the present invention is that the central processor is powered by a USB interface, a built-in battery, or a solar charging method.

[0014] A further preferred embodiment of the present invention is that a signal receiver and processing module, an alarm, and a display screen are integrated in the central processor.

[0015] A further preferred embodiment of the present invention is that for the temperature information sent from the repeater, the central processor processes it and displays the temperature value on the screen in real time. When the temperature exceeds the set range, an alarm signal is sent, including a light alarm and a sound alarm, and the corresponding fault location can be displayed.

[0016] Compared with the prior art, the prominent beneficial effects of the present invention are:

[0017] 1. The installation position of the temperature sensor is drilled on the basis of the original axle head. The drilling position is at the position of the axle head nut. After the axle head nut is locked, it is only subject to axial force and not radial force. Therefore, the strength will not be affected after drilling.

[0018] 2. The drilling connection position adopts an eccentric design, so that the probe of the temperature sensor is close to the outer circle of the axle head, and the temperature sensor is close to the inner ring of the hub bearing, which can more effectively measure the temperature of the hub bearing.

[0019] 3. The temperature sensor adopts an integrated "Z" - shaped bent hook design, which can ensure that the sensor antenna is located exactly in the middle of the axle head after locking. In this way, it can not only ensure that the bent section of the antenna is coaxial with the axle head to prevent interference with the end cover that does not rotate with the hub, but also make the transmission antenna longer, which is more conducive to signal transmission.

[0020] 4. The end cover in the anti - shielding component is of all - metal structure, and its strength is safer and more stable compared with other structures for protecting sensors. At the same time, the sensor of the present invention has its antenna facing outwards and a very small volume. The advantage of this is that even if the end cover or plastic plug cover is damaged, it is not easily affected by external substances and damaged. Brief Description of the Drawings

[0021] Figure 1 Assembly schematic diagram of the hub system assembly;

[0022] Figure 2 is Figure 1 Partial enlarged view at position A of;

[0023] Figure 3 Schematic diagram of the installation process of the temperature sensor;

[0024] Figure 4 Schematic diagram of the anti - shielding component structure;

[0025] Figure 5 Explosion diagram of the hub temperature monitoring system;

[0026] Figure 6 Schematic diagram of the whole vehicle for hub bearing temperature monitoring

[0027] In the figure, the relevant reference numerals are:

[0028] 5.1 Rear axle temperature sensor, 5.2 Middle axle temperature sensor, 5.3 Front axle temperature sensor, 5.4 Repeater, 5.5 Central processor and display warning device; 1 Temperature sensor, 2 Anti - signal shielding component, 3 Axle head of the axle, 4 Hub bearing, 5 Hub, 6 Axle head nut, 2 - 1 Metal end cover, 2 - 2 Plastic plug cover, 2 - 3 O - ring, 2 - 4 Locking nut. Detailed Description of the Invention

[0029] In order to more comprehensively understand the technical content of the hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system disclosed in the present invention, the following further elaborates on the present invention in conjunction with the accompanying drawings and specific embodiments. The listed drawings are only for reference and illustration purposes.

[0030] The first embodiment of the present invention: A hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system, including a temperature sensor assembly 1, an anti-signal shielding assembly 2, a repeater 5.4, and a central processor 5.5. The main components of the wheel hub system include an axle head 3, a hub bearing 4, a wheel hub 5, and an axle head nut 6. The axle head 3 of the vehicle axle is movably connected to the trailer wheel hub 5. A hub bearing 4 is installed between the axle head 3 of the vehicle axle and the trailer wheel hub 5, and an axle head nut 6 that clamps the inner ring of the hub bearing 4 is sleeved on the axle head 3 of the vehicle axle.

[0031] By installing a temperature sensor 1 in the axle head 3 of the wheel hub system, a transverse eccentric drilling is preset near the outer wall at the end of the axle head 3 of the vehicle axle. The depth of the transverse eccentric drilling exceeds the width of the axle head nut 6 and extends into the inner ring of the hub bearing 4. The temperature sensor 1 is fixedly installed in the transverse eccentric drilling. The temperature sensor 1 adopts a "Z"-shaped bent hook shape. The temperature sensor 1 includes a temperature probe body inserted into the transverse eccentric drilling and a bent antenna exposed outside the axle head 3 of the vehicle axle. A temperature probe, an information processing module, and a signal transmitting module are provided on the temperature probe body. The information processing module and the signal transmitting module adopt existing technologies. The bent antenna includes a transverse section antenna and a bent connecting section antenna connected together. The transverse section antenna is separated from the axle head 3 of the vehicle axle and is coaxially arranged. The bent connecting section antenna is connected to the temperature probe body. It can be realized that after being locked with the axle head 3, the sensor antenna is located in the exact middle of the axle head 3. After the axle head nut 6 is locked, it is only subjected to axial force and not radial force. After drilling the axle head 3, the strength is not affected, ensuring that the bent section of the sensor antenna is coaxial with the axle head 3. The metal end cover 2-1 that rotates simultaneously with the wheel hub 5 will not cause interference. The transmission antenna with a bent section length is more conducive to signal transmission.

[0032] The temperature sensor 1 detects the temperature on the outer edge of the axle head 3 of the vehicle axle and simultaneously monitors the temperature of the hub bearing 4. In addition, an anti-shielding shell assembly 2 is installed in the wheel hub system to realize sending the temperature information through a wireless transmitter, amplifying the signal through a repeater, and finally receiving and processing the signal through a central processor, ultimately realizing real-time monitoring, display, and early warning of the bearing temperature information of the wheel hub system.

[0033] The anti-shielding shell assembly 2 is fixed to the end of the trailer wheel hub 5 and rotates synchronously with it around the axle head. The anti-shielding shell assembly 2 includes a metal end cover 2-1 that covers the end of the axle head 3 of the axle, the end of the trailer wheel hub 5, and the axle head nut 6. An antenna emission hole for the transverse section antenna of the bent antenna to pass through is provided in the middle of the metal end cover 2-1, and a plastic plug 2-2 that covers the antenna is installed in the antenna emission hole; the temperature sensor 1 is installed in the axle head 3, and the "Z"-shaped bent hook sensor antenna is located inside the plastic plug 2-2 to avoid signal shielding caused by the metal material of the end cover 1 and unable to emit signals. When the hub system is running, the temperature sensor 1 and the axle head 3 are fixed together and are in a relatively static state, which can monitor the temperature information of the hub bearing 4 in the hub system and send out the temperature information through the built-in wireless transmitter.

[0034] After the temperature sensor 1 is fixed to the axle head 3 of the axle, it becomes an integral body and is in a relatively static state. The temperature sensor 1 monitors the temperature information of the hub bearing 4 in the hub system through a temperature probe. After being processed by the information processing module, the temperature information is wirelessly emitted by the bent antenna and received and processed by the central processor set in the trailer cab for alarm or display.

[0035] A further preferred solution of the present invention is that the plastic plug 2-2 is cylindrical, with an opening at one end and a bottom at the other end. An annular clamping platform that can be clamped on the outer wall of the outer hole of the antenna emission hole forming a circle to clamp the metal end cover 2-1 is provided on the outer wall of the plastic plug 2-2. An external thread is provided on the outer wall of the plastic plug 2-2 near the opening side, and a locking nut 2-4 that can clamp the inner wall of the antenna emission hole of the metal end cover 2-1 is screwed through this external thread.

[0036] A circular accommodating groove is provided on the inner surface of the annular clamping platform near the outer wall of the cylinder, and an O-ring 2-3 is placed in the circular accommodating groove for end face sealing.

[0037] An internal thread is provided on the inner wall of the transverse eccentric drill hole of the temperature sensor 1 and the axle head 3 of the axle. An external thread connected to the internal thread of the transverse eccentric drill hole is provided on the outer wall of the temperature probe body of the temperature sensor 1, and thread locking glue is applied at the thread position.

[0038] A repeater is also wirelessly connected between the temperature sensor 1 and the central processor. The repeater is installed at a suitable position at the bottom or tail of the trailer, takes power from the vehicle tail power line, receives the temperature information sent from the temperature sensor and amplifies and processes the signal. The repeater receives the temperature information sent from the bent antenna of the temperature sensor and amplifies and processes the signal, and then sends it to the central processor.

[0039] The central processing unit obtains power through a USB interface, a built-in battery or a solar charging method. A signal receiver and processing module, an alarm, and a display screen are integrated in the central processing unit. The temperature information sent by the repeater is processed by the central processing unit and the temperature value is displayed on the screen in real time. When the temperature exceeds the set range, an alarm signal is sent, including a light alarm and a sound alarm, and the corresponding fault location can be displayed.

[0040] The second embodiment of the present invention: The hub bearing alarm device can install the corresponding required number of temperature sensors and related components according to the vehicle needs, and monitor, display and give early warning of the temperature information of multiple hub systems in real time.

[0041] The above embodiments are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art can make more possible changes or modify them into equivalent embodiments by using the technical content disclosed above without departing from the scope of the technical solution of the present invention. Therefore, all equivalent changes made according to the idea of the present invention without departing from the content of the technical solution of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system, comprising an axle head (3) of the vehicle bridge and a trailer wheel hub (5) movably connected thereto. A hub bearing (4) is installed between the axle head (3) of the trailer vehicle bridge and the trailer wheel hub (5). An axle head nut (6) that clamps the inner ring of the hub bearing (4) is sleeved on the axle head (3). It is characterized in that At the end of the axle head (3) near its outer wall, a transverse eccentric drill hole is preset. The depth of the transverse eccentric drill hole exceeds the width of the axle head nut (6) and extends into the inner ring of the hub bearing (4). A temperature sensor (1) is fixedly installed in the transverse eccentric drill hole. The temperature sensor (1) adopts a "Z"-shaped bent hook shape. The temperature sensor (1) includes a temperature probe body inserted into the transverse eccentric drill hole and a bent antenna exposed outside the axle head (3). A temperature probe, an information processing module, and a signal transmitting module are provided on the temperature probe body. The bent antenna includes a transverse section antenna and a bent connecting section antenna connected together. The transverse section antenna is separated from the axle head (3) and is coaxially arranged. The bent connecting section antenna is connected to the temperature probe body. A shielding prevention shell assembly (2) that rotates synchronously with the axle head is fixed at the end of the trailer wheel hub (5). The shielding prevention shell assembly (2) includes a metal end cover (2-1) that covers the end of the axle head (3), the end of the trailer wheel hub (5), and the axle head nut (6). An antenna emission hole for the transverse section antenna of the bent antenna to pass through is provided in the middle of the metal end cover (2-1). A plastic plug cover (2-2) that covers the antenna is installed in the antenna emission hole. After being fixed to the axle head (3), the temperature sensor (1) becomes an integral part and is in a relatively static state. The temperature sensor (1) monitors the temperature information of the hub bearing (4) in the hub system through the temperature probe. After being processed by the information processing module, the temperature information is wirelessly emitted by the bent antenna and received and processed by a central processor arranged in the trailer cab for alarming or displaying.

2. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 1, characterized in that The plastic plug cover (2-2) is cylindrical, with an opening at one end and a bottom at the other end. An annular clamping platform that can be clamped on the outer hole wall of the antenna emission hole forming a circle to clamp the metal end cover (2-1) is provided on the outer wall of the plastic plug cover (2-2). An external thread is provided on the outer wall of the plastic plug cover (2-2) near the opening side. A locking nut (2-4) that can clamp the inner hole wall of the antenna emission hole of the metal end cover (2-1) is screwed through this external thread.

3. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 2, wherein A circular accommodating groove is provided on the inner surface of the annular clamping platform near the outer wall of the cylinder. An O-ring (2-3) is placed in the circular accommodating groove for end face sealing.

4. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 1, characterized in that An internal thread is provided on the inner wall of the transverse eccentric drill hole of the temperature sensor (1) and the axle head (3). An external thread connected to the internal thread of the transverse eccentric drill hole is provided on the outer wall of the temperature probe body of the temperature sensor (1), and thread locking glue is applied at the thread position.

5. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 1, characterized in that There is also a repeater wirelessly connected between the temperature sensor (1) and the central processor. The repeater is installed at the bottom or the tail of the trailer. The repeater receives the temperature information sent from the bent antenna of the temperature sensor, amplifies the signal, and then sends it to the central processor.

6. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 1, characterized in that The central processor is powered by a USB interface, a built-in battery, or solar charging.

7. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 6, characterized in that The central processor integrates a signal receiver and processing module, an alarm, and a display screen.

8. The hub bearing temperature monitoring and alarming device for a semi-trailer wheel hub system according to claim 5, characterized in that For the temperature information sent from the repeater, after being processed by the central processor, the temperature value is displayed on the screen in real time, and an alarm signal is sent when the temperature exceeds the set range, including a light alarm and a sound alarm, and the corresponding fault location can be displayed.

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