Motor train unit running gear temperature wireless transmission monitoring system and installation method

Abstract

The invention discloses a motor train unit running gear temperature wireless transmission monitoring system and an installation method, and relates to the technical field of motor trains. The motor train unit running gear temperature wireless transmission monitoring system comprises an I-shaped monitoring module. The monitoring module comprises a first shell, a supporting arm and a telescopic assembly; the lower edges of the two supporting arms are connected with the outer side walls of two bearing end covers on the speed reducer shell in a matched and clamped mode correspondingly. The telescopic assembly comprises two clamping fingers capable of extending out of the two side walls of the rectangular shell correspondingly. When the clamping fingers extend out, the clamping fingers and the supporting arms can be jointly connected with the outer side wall of the bearing end cover in a clamped mode. A temperature sensor, a storage battery and a wireless signal transmitter which are electrically connected with one another are fixedly installed in an inner cavity of the rectangular shell. When an original temperature detection system of the bullet train breaks down, a mechanician on the bullet train can conveniently install the device on the speed reducer to replace the original temperature detection system of the bullet train to carry out temperature monitoring on the speed reducer, so that the neutral period of temperature monitoring is avoided, and the driving safety is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a wireless transmission monitoring system for the temperature of an electric vehicle running gear and an installation method thereof. Background Art

[0002] When the EMU is running, the safety of the running gear is related to the safe operation of the entire EMU; when running at high speed for a long time, the temperature of key components of the running gear such as the reducer will gradually rise.

[0003] Temperature detection systems are usually installed inside key parts of the running gear to monitor the temperature in real time. However, if the temperature sensor is broken due to foreign objects hitting it or fails due to external reasons, the temperature of the running gear of the EMU will be out of monitoring, and the on-board mechanics need to frequently get off the train to manually measure the temperature. However, this cannot achieve real-time monitoring, and there are still many monitoring gaps. Frequent stops reduce the speed of the EMU, which will have a great impact on the operation order of the EMU. Summary of the invention

[0004] In order to overcome the problem in the above background technology that "when the temperature detection system originally built into the EMU fails, there will be a gap in temperature monitoring", the present invention provides a wireless transmission monitoring system for the temperature of the EMU running gear and an installation method.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A temperature wireless transmission monitoring system for a running part of an EMU comprises an I-shaped monitoring module; the monitoring module comprises a first shell, a support arm and a telescopic assembly; the support arms are provided with two and are respectively arranged on both sides of the top of the first shell; the lower edges of the two support arms are respectively adapted to engage with the outer side walls of two bearing end covers on the reducer shell; the first shell comprises a rectangular shell and a cylindrical shell fixedly connected to each other; the telescopic assembly is horizontally installed at the bottom of the inner cavity of the rectangular shell, the telescopic assembly comprises two clamping fingers that can be respectively extended from the two side walls of the rectangular shell, and the clamping fingers can be engaged with the outer side walls of the bearing end covers together with the support arms when extended; a temperature sensor, a battery and a wireless signal transmitter that are electrically connected to each other are fixedly installed in the inner cavity of the rectangular shell, a connecting hole for accommodating the temperature sensor probe is opened on the back plate of the rectangular shell, and a heat conductive sheet is provided on the outer side wall of the back plate of the rectangular shell, and the heat conductive sheet is crimped with the probe of the temperature sensor.

[0006] As a further optimization solution of the present invention, the cylindrical shell is in the shape of a straight quadrangular prism with a constant diameter.

[0007] As a further optimization scheme of the present invention, the telescopic assembly also includes a screw with opposite thread rotation directions at both ends, a sleeve sleeved on the outer wall of the clamping finger to prevent the clamping finger from rotating, and a first bevel gear installed in the middle of the screw; the two ends of the screw are respectively inserted into the inner cavities of the two clamping fingers and are respectively connected by threads.

[0008] As a further optimization solution of the present invention, the monitoring module also includes a transmission component connected to the telescopic component.

[0009] As a further optimization solution of the present invention, the clamping finger is in a straight rod-shaped structure; the outer contour of the cross section of the clamping finger is in a rhombus shape, and the inner wall of the sleeve is adapted to and fits the outer wall of the clamping finger.

[0010] As a further optimization scheme of the present invention, the transmission assembly includes a first transmission shaft, a second bevel gear fixedly mounted on one end of the first transmission shaft, and a locking column fixedly mounted on the other end of the first transmission shaft; the second bevel gear is meshed with the first bevel gear; the first transmission shaft is mounted in the first inner cavity of the cylindrical shell through a first bearing.

[0011] As a further optimization scheme of the present invention, a cross-shaped locking through hole is provided in the middle of the locking cylinder, and a cross-shaped or straight-shaped clamping groove is provided on the top surface of the locking cylinder; the cylindrical shell is provided with a receiving groove for accommodating the locking cylinder and the front side is open, and a screw hole adapted to the locking through hole is provided on the side wall of the receiving groove; and a locking bolt is also included, and the locking bolt can pass through the locking through hole and be screwed to the screw hole, thereby limiting the rotation of the locking cylinder and then limiting the retraction of the clamping finger.

[0012] As a further optimization solution of the present invention, the engaging slot is located above the first inner cavity and is in communication with the first inner cavity.

[0013] As a further optimization solution of the present invention, the first transmission shaft and the screw rod are vertically arranged.

[0014] A method for installing a wireless transmission monitoring system for the temperature of a running part of an EMU, comprising the following steps: S1, using a screwdriver to rotate the locking cylinder until the clamping finger retracts and enters the first shell; S2, inserting the monitoring module from top to bottom or from bottom to top between two bearing end covers on a reducer shell until the rectangular shell is located exactly in the middle of the two bearing end covers, and the support arm fits with the bearing end cover, and the heat conducting sheet fits with the reducer shell; S3, using a screwdriver to rotate the locking cylinder so that the clamping finger extends out and is crimped with the bearing end cover; S4, passing the locking bolt through the locking through hole and screwing it with the screw hole to achieve locking of the clamping finger of the telescopic assembly.

[0015] In summary, the present invention is beneficial in that: (1) When the original temperature detection system of the EMU fails, the on-board mechanic can conveniently install the present invention on the reducer to replace the original temperature detection system of the EMU to monitor the temperature of the reducer, thereby avoiding the gap period of temperature monitoring and ensuring driving safety.

[0016] (2) The I-shaped monitoring module can be stably connected between the two bearing end covers on the reducer housing, enabling quick installation and reducing downtime caused by vehicle failure.

[0017] (3) When the telescopic assembly is retracted, the mechanic can insert the monitoring module from top to bottom or from bottom to top between the two bearing end covers and install it, which is convenient for the mechanic to load and unload the present invention in the complex installation environment of the reducer. It is flexible, convenient, stable and reliable.

[0018] (4) The monitoring module transmits the detected temperature signal wirelessly to the signal receiver worn by the mechanic, thus avoiding the tedious steps of the mechanic having to frequently get off the train and manually measure the temperature. Since there is no need to frequently stop for temperature measurement, the running time of the faulty train can be further reduced, so that the train can be inspected and repaired as early as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application is further described below with reference to the accompanying drawings: Figure 1 It is a front view schematic diagram of the installation position of the present invention; Figure 2 It is a bottom view schematic diagram of the installation position of the present invention; Figure 3 It is a schematic diagram of the monitoring module structure; Figure 4 This is a schematic diagram of the monitoring module's front view structure; Figure 5 It is a schematic diagram of the location and structure of the telescopic component; Figure 6 It is a schematic diagram of the structure of the clamp finger in a vertical section and side view; Figure 7 It is a schematic diagram of the transmission component structure; Figure 8 It is a schematic diagram of the connection structure between the locking cylinder and the first transmission shaft; Fig. 9 It is a schematic diagram of the cross-sectional structure of the locking column; Fig.10 It is a schematic diagram of the connection state between the rectangular shell and the cylindrical shell; Fig.11 It is a schematic diagram of the right side structure of the locking column in vertical section; Fig.12 This is a schematic diagram of the temperature sensor installation location; Fig.13It is a schematic diagram of the right side structure of the rectangular shell at the position of the connecting hole; Fig.14 This is a schematic diagram of the temperature sensor layout status; Fig.15 This is a schematic diagram of the monitoring module being inserted between the bearing end covers from bottom to top; Fig.16 Schematic diagram of the structure of the limiting ring and the limiting semi-ring; Fig.17 A right side view schematic diagram of the installation position of the adapter abutment plate; Fig.18 This is a front view schematic diagram of the installation position of the adapter abutment plate.

[0020] Description of reference numerals: In the figure, 1. Monitoring module; 11. First shell; 111. Rectangular shell; 1111. Side hole; 1112. Communication hole; 112. Column shell; 1120. First inner cavity; 1121. Accommodating groove; 1122. Screw hole; 1123. Top hole; 12. Support arm; 121. Breathing hole; 13. Telescopic assembly; 131. Screw; 132. Clamping finger; 133. Sleeve; 134. First bevel gear; 135. Limiting ring; 136. Limiting semi-ring; 14. Transmission assembly; 141. First transmission shaft; 1411. First bearing; 142. Second bevel gear; 143. Locking column; 1431. Locking hole; 1432. Contraction part; 1433. Card-connecting slot; 15. Temperature sensor; 16. Heat conducting sheet; 2. bearing end cover; 21. convex ring; 22. adaptor abutment plate; 221. edge fin plate; 3. Reducer housing; 4. Lock the bolt. DETAILED DESCRIPTION

[0021] Based on the above structural features of the present application, the implementation methods of the present application are further described: Reference Figure 1-2 This embodiment provides a temperature wireless transmission monitoring system for the running part of an EMU, including an I-shaped monitoring module 1. When the original temperature detection system built into the EMU fails, the EMU on-board mechanic installs the monitoring module 1 on the EMU reducer for temporary monitoring of the reducer temperature; when the EMU is completed or arrives at the next station, the monitoring module 1 is removed and the original temperature detection system of the EMU is repaired, thereby avoiding the idle period of temperature monitoring and improving the safety of EMU operation; the monitoring module 1 can transmit the temperature signal to the signal receiver (such as a watch, mobile phone, etc.) worn by the mechanic in real time, thereby avoiding the problem that the mechanic needs to get off the train frequently and measure the temperature manually.

[0022] Reference Figure 1 to Figure 3The monitoring module 1 includes a first housing 11, a support arm 12 and a telescopic assembly 13; two support arms 12 are provided and are arranged on both sides of the top of the first housing 11, so that the first housing 11 and the support arms 12 are connected in a T-shape. The lower edges of the two support arms 12 are arc-shaped and respectively fit the upper outer walls of the two bearing end covers 2 on the reducer housing 3 to improve the installation stability of the monitoring module 1. The specific curvature of the lower edge of the support arm 12 is determined by the mechanic measuring the curvature of the corresponding position of the accelerator and informing the manufacturer of the monitoring module 1, so that the support arm 12 can be customized.

[0023] Reference Figure 3 to Figure 5 The first housing 11 includes a rectangular housing 111 and a cylindrical housing 112 which are fixedly connected to each other. The rectangular housing 111 is fixedly plugged and arranged in the middle of the top surface of the rectangular housing 111 (for example, fixedly connected by bolts or fixedly connected in an integrated manner).

[0024] Reference Figure 1 , Figure 3 and Fig.15 The support arm 12 is a C-shaped or V-shaped frame structure, and the two ends of the support arm 12 are detachably connected to the side walls of the rectangular shell 111 and the side walls of the cylindrical shell 112, so that a ventilation hole 121 is formed between the support arm 12 and the first shell 11, thereby avoiding the plate-like or block-like solid structure hindering the heat dissipation of the reducer.

[0025] Reference Figure 1 , Figure 3 and Fig.15 The two ends of the support arm 12 are detachably connected to the side wall of the rectangular housing 111 and the side wall of the cylindrical housing 112 by bolts. Because different reducers have different installation environments (different models and sizes of EMU transmission gears and EMU transmission shafts are arranged at different locations in the environment, which will hinder the installation of the monitoring module 1 and the tools such as screwdrivers used when installing the monitoring module 1), it is easier to insert the monitoring module 1 from top to bottom between the two bearing end covers 2 in some environments (refer to Figure 1 ), in some environments it is easier to insert the monitoring module 1 from bottom to top between the two bearing end covers 2 (refer to Fig.15 ), during this conversion process, the two support arms 12 need to be removed and installed on the first shell 11 after being swapped left and right, so that the reassembled monitoring module 1 is inserted between the two bearing end covers 2 in a new direction and the support arms 12 are respectively fitted with the bearing end covers 2.

[0026] Reference Figure 2 to Figure 5The telescopic component 13 is horizontally installed at the bottom of the inner cavity of the rectangular shell 111. The telescopic component 13 includes two clamping fingers 132 that can be extended from the two side walls of the rectangular shell 111 respectively. When the clamping fingers 132 are extended, they can be clamped together with the support arm 12 to the outer wall of the bearing end cover 2, thereby realizing the fixed installation of the monitoring module 1.

[0027] Reference Fig.12 The inner cavity of the rectangular housing 111 is fixedly installed with a temperature sensor 15, a battery, an analog-to-digital converter and a wireless signal transmitter which are electrically connected to each other. For example, the temperature sensor 15, the battery, the analog-to-digital converter and the wireless signal transmitter are fixedly connected to the back plate of the rectangular housing 111 by bolts. Fig.13 A connecting hole 1112 for accommodating the probe of the temperature sensor 15 is provided on the back plate of the rectangular housing 111, and a heat conducting sheet 16 is provided on the outer side wall of the back plate of the rectangular housing 111. The probe of the temperature sensor 15 is placed in the connecting hole 1112. The heat conducting sheet 16 is crimped to the probe of the temperature sensor 15. Fig.14 There are several temperature sensors 15, which are evenly arranged in the middle and upper part of the inner cavity of the rectangular shell 111 (due to the telescopic component 13 at the bottom), and each temperature sensor 15 transmits data independently to the signal receiver, and the signal receiver displays the temperature data monitored by each temperature sensor 15 and its average value in real time, thereby improving the monitoring accuracy; the mechanic can compare the temperature data between the temperature sensors 15, and if individual data is too large or too small compared with other data, it is judged that the temperature sensor 15 is faulty, avoiding the problem of transmitting wrong information when a single temperature sensor 15 fails.

[0028] The heat conducting sheet 16 is, for example, a copper alloy sheet. When the heat conducting sheet 16 conducts heat between the reducer and the temperature sensor 15, heat loss is inevitable, so the thermal conductivity efficiency needs to be measured in advance through experiments. The signal receiver divides the received temperature value by the thermal conductivity efficiency to obtain the actual temperature of the reducer, thereby improving the accuracy of monitoring.

[0029] Reference Figure 4 , Figure 5 and Fig.10 The cylindrical shell 112 is in the shape of a straight quadrangular prism with a constant diameter, and the front and rear side surfaces of the rectangular shell 111 are aligned with the front and rear side surfaces of the cylindrical shell 112 respectively. The outer contour of the first shell 11 is in a convex shape, so that the upper part of the rectangular shell 111 and the side of the cylindrical shell 112 are in a rectangular concave structure, and the air permeable hole 121 has as large an area as possible to minimize the problem of the monitoring module 1 blocking the reducer and causing the heat dissipation performance of the reducer to be reduced.

[0030] Reference Figure 5 and Figure 6The telescopic assembly 13 also includes a screw 131 with opposite thread rotation directions at both ends, a sleeve 133 sleeved on the outer wall of the clamping finger 132 to prevent the clamping finger 132 from rotating, and a first bevel gear 134 installed in the middle of the screw 131. The two ends of the screw 131 are respectively inserted into the inner cavity of the two clamping fingers 132 and are respectively connected by threads. The screw 131 is a straight cylindrical shape with a constant diameter, and the thread pitches at both ends of the screw 131 are equal, so as to ensure that the clamping fingers 132 at both ends of the screw 131 can extend or retract at the same speed. The first bevel gear 134 is fixedly installed in the middle of the screw 131 in an integrated manner or by a key or by bolts. The outer surface of the sleeve 133 is in the shape of a straight quadrangular prism, and the outer side wall of the sleeve 133 is in contact with the inner cavity side wall of the rectangular shell 111 and is fixedly connected by bolts.

[0031] Reference Figure 5 and Figure 6 The clamping finger 132 is in a straight rod structure, so that it can be fitted on the outer surface of the screw rod 131. The outer contour of the cross section of the clamping finger 132 is rhombus-shaped, and the inner wall of the sleeve 133 is adapted to and fits the outer wall of the clamping finger 132. After the clamping finger 132 is inserted into the sleeve 133, it cannot rotate, so it can be extended and retracted under the push of the screw rod 131.

[0032] Reference Figure 4 and Figure 5 The monitoring module 1 also includes a transmission assembly 14 connected to the telescopic assembly 13, and the transmission assembly 14 is used to transmit driving force and locking force to the telescopic assembly 13. The transmission assembly 14 is arranged vertically with the telescopic assembly 13. The transmission assembly 14 includes a first transmission shaft 141, a second bevel gear 142 fixedly mounted on one end of the first transmission shaft 141, and a locking cylinder 143 fixedly mounted on the other end of the first transmission shaft 141; the second bevel gear 142 is meshed with the first bevel gear 134; the first transmission shaft 141 is installed in the first inner cavity 1120 of the cylindrical housing 112 through a first bearing 1411. The second bevel gear 142 is fixedly connected to the first transmission shaft 141 by bolts or keys or in an integrated manner; the locking cylinder 143 is fixedly connected to the first transmission shaft 141 by bolts or in an integrated manner, so that the second bevel gear 142, the first transmission shaft 141, and the locking cylinder 143 can rotate synchronously at the same speed and in the same direction.

[0033] Reference Figure 7 to Figure 9, a cross-shaped locking through hole 1431 is provided in the middle of the locking cylinder 143. A cross-shaped or straight-shaped clamping groove 1433 is provided on the top surface of the locking cylinder 143 for plugging and driving a screwdriver. The cylindrical housing 112 is provided with a receiving groove 1121 for accommodating the locking cylinder 143 and having an opening on the front side, and a screw hole 1122 adapted to the locking through hole 1431 is provided at the side wall of the receiving groove 1121; the wireless transmission monitoring system for the temperature of the EMU running part also includes a locking bolt 4, which is adapted to the screw hole 1122; the locking bolt 4 can pass through the locking through hole 1431 and be screwed and tightened with the screw hole 1122, thereby limiting the rotation of the locking cylinder 143 and thus limiting the retraction of the clamping finger 132, so that the monitoring module 1 can be stably clamped between the two bearing end covers 2 without falling off. A top hole 1123 is provided at the top of the accommodating groove 1121, and the contraction portion 1432 is inserted and arranged in the top hole 1123.

[0034] Reference Figure 7 and Fig.11 The engaging groove 1433 is located above the first inner cavity 1120 and communicates with the first inner cavity 1120 , thereby providing an accommodating space for the connection between the locking column 143 and the first transmission shaft 141 .

[0035] Reference Figure 4 and Figure 7 , the first transmission shaft 141 and the screw 131 are arranged vertically, and the locking cylinder 143 is located at one end of the cylindrical housing 112 close to the support arm 12, thereby improving the convenience of operation during the installation of the monitoring module 1; Figure 1 When the environment above the reducer is relatively open and there are many obstacles in the environment below, the monitoring module 1 needs to be inserted from top to bottom between the two bearing end covers 2. At this time, the locking cylinder 143 is located above the bearing end cover 2 instead of below it, so that sufficient operating space can be provided for the screwdriver driving the locking cylinder 143 to rotate and the electric wrench driving the locking bolt 4 to rotate; refer to Fig.15 Similarly, when the environment below the reducer is relatively open and there are many obstacles in the environment above, the monitoring module 1 needs to be inserted from bottom to top between the two bearing end covers 2. At this time, the locking cylinder 143 is located below the bearing end cover 2 rather than above it, so it can provide ample operating space for the screwdriver that drives the locking cylinder 143 to rotate and the electric wrench that drives the locking bolt 4 to rotate.

[0036] Reference Fig.16A limiting ring 135 is fixedly sleeved on the middle part of the screw rod 131 (for example, through an integrated fixed connection), and a limiting semi-ring 136 is fixedly connected to the inner cavity of the rectangular shell 111. The limiting semi-ring 136 is in an N shape and is buckled on the outer periphery of the screw rod 131. Both ends of the limiting semi-ring 136 are fixedly connected to the inner wall of the rectangular shell 111 by bolts; two limiting semi-rings 136 are provided, and the limiting ring 135 is placed between the two limiting semi-rings 136, so that the screw rod 131 cannot move along the axial direction to ensure that the first bevel gear 134 and the second bevel gear 142 will not disengage.

[0037] Reference Figure 5 The left and right side walls of the rectangular housing 111 are respectively provided with side holes 1111, the cross section of the side holes 1111 is adapted to the cross section of the clamping fingers 132, and the two clamping fingers 132 are respectively inserted into the two side holes 1111, and the side holes 1111 are used to provide accommodation space for the clamping fingers 132. The end of the sleeve 133 is located at the side hole 1111, and the inner cavity of the sleeve 133 is aligned with the side hole 1111, so as to ensure the smooth movement of the clamping fingers 132.

[0038] Reference Figure 7 A contraction portion 1432 with a reduced diameter is provided on the upper portion of the locking column 143, and the top of the inner cavity of the cylindrical shell 112 is adapted to the outer wall of the contraction portion 1432, thereby preventing the locking column 143 from escaping from the top or the front.

[0039] Reference Figure 5 , Figure 8 and Fig.11 Since the cross-shaped locking through hole 1431 can only achieve step-wise locking, and the wear rate of the end of the clamping finger 132 is stepless wear, after a period of use, the locking through hole 1431 cannot be aligned with the screw hole 1122 when the clamping finger 132 is pressed against the bearing end cover 2, resulting in the inability to insert the locking bolt 4. Therefore, when the outer end of the clamping finger 132 is fixedly installed with an elastic end head or elastic layer made of heat-resistant rubber material, when the locking through hole 1431 is aligned with the screw hole 1122, the clamping finger 132 and the bearing end cover 2 are in a lightly pressed or heavily pressed state rather than a disengaged state, which can improve the installation stability of the monitoring module 1.

[0040] Reference Figure 1 , Figure 2 and Fig.17The bearing end cover 2 is detachably connected to the reducer housing 3 by bolts; the bearing end cover 2 adopts a customized structure, and the edge of the bearing end cover 2 away from the reducer housing 3 is provided with a convex ring 21 extending outward, and the convex ring 21 is used to clamp the support arm 12 of the monitoring module 1 and the edge of the first housing 11 to prevent the monitoring module 1 from falling off in a direction perpendicular to the surface of the reducer housing 3. The EMU is equipped with an adapter abutment plate 22 of different thicknesses. The mechanic inserts the adapter abutment plate 22 of appropriate thickness between the convex ring 21 and the monitoring module 1, which enables the monitoring module 1 to press the reducer housing 3, thereby improving the accuracy of temperature monitoring.

[0041] A method for installing a wireless transmission monitoring system for temperature of a running gear of an EMU, comprising the following steps: S1, use a screwdriver to rotate the locking cylinder 143 until the clamping finger 132 retracts into the first housing 11; S2. Insert the monitoring module 1 from top to bottom or from bottom to top between the two bearing end covers 2 on the reducer housing 3 until the rectangular housing 111 is located in the middle of the two bearing end covers 2, and the support arm 12 fits with the bearing end cover 2, and the heat conducting sheet 16 fits with the reducer housing 3; S3, use a screwdriver to rotate the locking cylinder 143, so that the clamping finger 132 extends and is crimped with the bearing end cover 2, and the locking through hole 1431 is aligned with the screw hole 1122; S4, passing the locking bolt 4 through the locking through hole 1431 and screwing it to the screw hole 1122 and tightening it to lock the clamping finger 132 of the telescopic assembly 13; S5. Select an adapter abutment plate 22 with a suitable thickness, and insert the adapter abutment plate 22 between the convex ring 21 of the bearing end cover 2 and the monitoring module 1 to achieve compression of the heat conducting sheet 16 and the reducer housing 3.

[0042] Reference Fig.18 The abutting adapter plate is a T-shaped plate structure, and the two sides of the waist of the abutting adapter plate are respectively pressed against the two convex rings 21, so as to achieve the compression of the monitoring module 1. Fig.17 A transverse edge fin plate 221 is fixedly installed on the top edge of the abutment adapter plate, and the abutment adapter plate and the edge fin plate 221 are fixedly connected in an integrated manner.

[0043] The disassembly method of the wireless transmission monitoring system for the temperature of the running gear of an EMU comprises the following steps: ① grab the edge fin plate 221 and pull out the abutment adapter plate; ② use a screwdriver to rotate the locking cylinder 143 until the clamping finger 132 retracts into the first shell 11; ③ pull out the monitoring module 1 from between the two bearing end covers 2.

[0044] When the original temperature detection system of the EMU fails, the on-board mechanic can easily install the present invention on the reducer, replacing the original temperature detection system of the EMU to monitor the temperature of the reducer, thereby avoiding the gap in temperature monitoring and ensuring driving safety. The I-shaped monitoring module 1 can be stably clamped between the two bearing end covers 2 on the reducer housing 3, achieving quick installation and reducing downtime caused by EMU failures. When the telescopic assembly 13 is retracted, the mechanic can insert the monitoring module 1 from top to bottom or from bottom to top between the two bearing end covers 2 and install it, which is convenient for the mechanic to load and unload the present invention in the complex installation environment of the reducer, and is flexible, convenient, stable and reliable.

[0045] When the gap between the two bearing end covers 2 is narrow, it is necessary to customize a monitoring module 1 with a narrower rectangular shell 111. Under the obstruction of the telescopic assembly 13, the monitoring module 1 cannot be inserted between the two bearing end covers 2 from top to bottom or from bottom to top, but the I-shaped monitoring module 1 should be placed between the two bearing end covers 2 in a direction perpendicular to the surface of the reducer housing 3, and then clamped; correspondingly, the inner cavity of the narrower rectangular shell 111 can accommodate a smaller temperature sensor 15 but is difficult to accommodate a larger battery, analog-to-digital converter and wireless signal transmitter, so it is necessary to set an extension shell at one end of the rectangular shell 111 away from the support arm 12, and the battery, analog-to-digital converter and wireless signal transmitter are set in the extension shell to be installed in the form of suspension below the gap between the two bearing end covers 2. The extension shell is fixedly connected to the rectangular shell 111 in an integrated manner. The wires and signal lines between the temperature sensor 15 and the battery, analog-to-digital converter, and wireless signal transmitter penetrate the rectangular shell 111 and the extended shell, and are routed on the outer side walls of the rectangular shell 111 and the extended shell away from the heat conducting plate 16 .

[0046] The temperature sensor 15 uses a thermal resistance sensor, and the probe material is 304 stainless steel. The measurement range is -50℃~200℃, and it is waterproof, oil-proof, and anti-interference. The signal line connected to the temperature sensor 15 uses a PTFE silver-plated shielded line, which can prevent high temperature, increase wear resistance, shield interference, and the response speed can reach 45 milliseconds.

[0047] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and deformations made to the present invention still fall within the protection scope of the present invention.

Claims

1. A wireless transmission monitoring system for the temperature of a running gear of an EMU, characterized in that: It includes an I-shaped monitoring module (1); The monitoring module (1) comprises a first housing (11), a support arm (12) and a telescopic assembly (13); two support arms (12) are provided and are arranged on both sides of the top end of the first housing (11); the lower edges of the two support arms (12) are respectively adapted to be clamped to the outer side walls of the two bearing end covers (2) on the reducer housing (3); The first housing (11) comprises a rectangular housing (111) and a cylindrical housing (112) which are fixedly connected to each other; The telescopic assembly (13) is horizontally mounted at the bottom of the inner cavity of the rectangular shell (111), and the telescopic assembly (13) comprises two clamping fingers (132) that can be respectively extended from the two side walls of the rectangular shell (111), and the clamping fingers (132) can be clamped together with the support arm (12) to the outer side wall of the bearing end cover (2) when extended; A temperature sensor (15), a storage battery and a wireless signal transmitter which are electrically connected to each other are fixedly mounted in the inner cavity of the rectangular shell (111); a connecting hole (1112) for accommodating a probe of the temperature sensor (15) is provided on the back plate of the rectangular shell (111); a heat conducting sheet (16) is provided on the outer side wall of the back plate of the rectangular shell (111); the heat conducting sheet (16) is crimped to the probe of the temperature sensor (15).

2. The EMU running gear temperature wireless transmission monitoring system according to claim 1 is characterized in that: The cylindrical shell (112) is in the shape of a straight quadrangular prism with a constant diameter.

3. The EMU running gear temperature wireless transmission monitoring system according to claim 2 is characterized in that: The telescopic assembly (13) further comprises a screw rod (131) with threads at both ends rotating in opposite directions, a sleeve (133) sleeved on the outer wall of the clamping finger (132) for preventing the clamping finger (132) from rotating, and a first bevel gear (134) installed in the middle of the screw rod (131); the two ends of the screw rod (131) are respectively inserted into the inner cavities of the two clamping fingers (132) and are respectively connected by threads.

4. The EMU running gear temperature wireless transmission monitoring system according to claim 3 is characterized in that: The monitoring module (1) further comprises a transmission assembly (14) connected to the telescopic assembly (13).

5. The EMU running gear temperature wireless transmission monitoring system according to claim 4 is characterized in that: The clamping finger (132) is in the form of a straight rod; the outer contour of the cross section of the clamping finger (132) is in the form of a rhombus; the inner wall of the sleeve (133) is adapted to and fits the outer wall of the clamping finger (132).

6. The EMU running gear temperature wireless transmission monitoring system according to claim 5 is characterized in that: The transmission assembly (14) comprises a first transmission shaft (141), a second bevel gear (142) fixedly mounted on one end of the first transmission shaft (141), and a locking column (143) fixedly mounted on the other end of the first transmission shaft (141); the second bevel gear (142) is meshed with the first bevel gear (134); and the first transmission shaft (141) is mounted in a first inner cavity (1120) of the cylindrical housing (112) via a first bearing (1411).

7. The EMU running gear temperature wireless transmission monitoring system according to claim 6 is characterized by: A cross-shaped locking through hole (1431) is provided in the middle of the locking column (143), and a cross-shaped or straight-shaped clamping groove (1433) is provided on the top surface of the locking column (143); the cylindrical housing (112) is provided with a receiving groove (1121) for receiving the locking column (143) and having an opening at the front side, and a screw hole (1122) adapted to the locking through hole (1431) is provided at a side wall of the receiving groove (1121); It also includes a locking bolt (4), which can pass through the locking through hole (1431) and be screwed to the screw hole (1122), thereby limiting the rotation of the locking column (143) and thus limiting the retraction of the clamping finger (132).

8. The EMU running gear temperature wireless transmission monitoring system according to claim 7 is characterized in that: The engaging groove body (1433) is located above the first inner cavity (1120) and is in communication with the first inner cavity (1120).

9. The EMU running gear temperature wireless transmission monitoring system according to claim 8 is characterized in that: The first transmission shaft (141) and the screw rod (131) are arranged vertically.

10. A method for installing the wireless transmission monitoring system for the temperature of the running gear of a train set according to claim 9, characterized in that the steps include: S1. Using a screwdriver to rotate the locking cylinder (143) until the clamping finger (132) retracts into the first housing (11); S2, inserting the monitoring module (1) from top to bottom or from bottom to top between the two bearing end covers (2) on the reducer housing (3), until the rectangular housing (111) is located in the middle of the two bearing end covers (2), and the support arm (12) is in contact with the bearing end cover (2), and the heat conducting sheet (16) is in contact with the reducer housing (3); S3, using a screwdriver to rotate the locking cylinder (143) so that the clamping finger (132) extends out and is crimped onto the bearing end cover (2); S4. Pass the locking bolt (4) through the locking through hole (1431) and screw it into the screw hole (1122), thereby locking the clamping finger (132) of the telescopic assembly (13).

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