WO2024108629A1 - Gearbox speed measuring device and gearbox - Google Patents

Gearbox speed measuring device and gearbox Download PDF

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Publication number
WO2024108629A1
WO2024108629A1 PCT/CN2022/135411 CN2022135411W WO2024108629A1 WO 2024108629 A1 WO2024108629 A1 WO 2024108629A1 CN 2022135411 W CN2022135411 W CN 2022135411W WO 2024108629 A1 WO2024108629 A1 WO 2024108629A1
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WO
WIPO (PCT)
Prior art keywords
output shaft
speed measuring
gear
gearbox
speed
Prior art date
Application number
PCT/CN2022/135411
Other languages
French (fr)
Chinese (zh)
Inventor
于忠建
马宏宇
王爱彬
洛启
Original Assignee
中车长春轨道客车股份有限公司
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Application filed by 中车长春轨道客车股份有限公司 filed Critical 中车长春轨道客车股份有限公司
Publication of WO2024108629A1 publication Critical patent/WO2024108629A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to the technical field of gear boxes, and more particularly to a gear box speed measuring device and a gear box.
  • the straddle-type monorail vehicle is very different from common steel-wheeled vehicles such as subways and light rails in structure and appearance. Its vehicle runs astride a single track beam, and its running wheels are replaced by rubber pneumatic tires instead of the steel wheels of traditional vehicles to achieve carrying.
  • the existing gearbox speed measurement scheme for straddle-type monorail vehicles is to install a speed sensor on the power output shaft of the gearbox, and use the output gear on the power output shaft as a speed measuring gear.
  • the output gear is an output passive helical gear, and its main function is to transmit torque. It has the characteristics of a large module and a small number of teeth. Using the output gear as a speed measuring gear will result in low speed measurement accuracy. Under the premise of increasingly higher requirements for the accuracy of driving data, this speed measurement scheme can no longer meet the speed measurement needs.
  • an object of the present invention is to provide a gearbox speed measuring device to improve the speed measuring accuracy of the gearbox.
  • Another object of the present invention is to provide a gearbox having the above-mentioned gearbox speed measuring device.
  • the present invention provides the following technical solutions:
  • a gearbox speed measuring device is used to detect the speed of a power output shaft of a gearbox, wherein the power output shaft is provided with an output gear, and comprises:
  • a speed measuring gear output shaft used for transmission connection to one end of the power output shaft along the extension direction of the power output shaft;
  • a speed measuring gear which is transmission-connected to the speed measuring gear output shaft, and the number of teeth of the speed measuring gear is greater than the number of teeth of the output gear;
  • the rotation speed sensor is used to measure the rotation speed of the speed measuring gear.
  • the speed measuring gear output shaft comprises:
  • a gear mounting portion wherein the first end of the gear mounting portion is a connecting end plate, and the speed measuring gear is fixedly sleeved on the second end of the gear mounting portion;
  • An output shaft matching portion wherein the first end is connected to the connecting end plate, the second end extends in the direction of the speed measuring gear and is nested with the end hole of the power output shaft, and there is a gap between the output shaft matching portion and the gear mounting portion;
  • the output shaft connecting portion is connected to the second end of the output shaft matching portion and is used to be connected to the end surface of the power output shaft.
  • the output shaft connecting portion, the output shaft matching portion and the gear mounting portion are an integrated structure, and the output shaft connecting portion is mounted on the end face of the power output shaft by means of fasteners.
  • a gear box comprising:
  • a gear box body wherein a power output shaft is rotatably arranged in the gear box body;
  • the gearbox speed measuring device is the above-mentioned gearbox speed measuring device, wherein the speed measuring gear output shaft is transmission-connected to one end of the power output shaft along the extension direction of the power output shaft, and the speed sensor is arranged on the gearbox body.
  • the rotation speed sensors are Hall sensors, and two of them are arranged on the gearbox body.
  • the gear box body comprises:
  • An output shaft outer end cover is arranged on one side of the box body, and the speed measuring gear output shaft passes through the output shaft outer end cover;
  • the speed measuring connecting cover is arranged on the side of the output shaft outer end cover away from the box body, and a speed measuring gear cavity is formed between the speed measuring connecting cover and the output shaft outer end cover, the speed measuring gear is arranged in the speed measuring gear cavity, and the speed sensor is arranged on the cavity wall of the speed measuring gear cavity.
  • the output shaft outer end cover comprises:
  • a supporting end plate wherein the supporting end plate is provided with a supporting hole for the output shaft of the speed measuring gear to pass through;
  • the first connecting part and the second connecting part are both arranged on the outer side of the supporting end plate and extend to both sides of the supporting end plate respectively.
  • One end of the first connecting part is embedded in the end hole of the box body, and a fastening plate connected to the end surface of the box body is arranged on the outer side of the first connecting part.
  • the second connecting part is connected to the speed measuring connecting cover, and the speed measuring gear cavity is formed between the supporting end plate, the second connecting part and the speed measuring connecting cover.
  • the speed measuring gear output shaft and the supporting hole are sealed by a labyrinth sealing structure.
  • the speed measuring gear output shaft is provided with an oil groove
  • an oil guide plate for guiding oil into the oil groove is provided on a side of the support end plate close to the power output shaft.
  • the support end plate is provided with an oil return passage, and both ends of the oil return passage are respectively connected with the speed measuring gear cavity and the box body;
  • the box body is provided with a first oil inlet passage, the first connecting portion is provided with a second oil inlet passage, and the first oil inlet passage is communicated with the second oil inlet passage.
  • the gearbox speed measuring device provided by the present invention is used to detect the rotational speed of the power output shaft of the gearbox.
  • An output gear is provided on the power output shaft.
  • the gearbox speed measuring device includes a speed measuring gear output shaft, a speed measuring gear and a speed sensor.
  • the speed measuring gear output shaft is used to be transmission-connected to one end of the power output shaft along the extension direction of the power output shaft, so that the speed measuring gear output shaft has the same rotational speed as the power output shaft.
  • the speed measuring gear is transmission-connected to the speed measuring gear output shaft, has the same rotational speed as the speed measuring gear output shaft and the power output shaft, and the number of teeth of the speed measuring gear is greater than the number of teeth of the output gear.
  • the speed sensor is used to measure the rotational speed of the speed measuring gear. By measuring the rotational speed of the speed measuring gear, the rotational speed of the power output shaft is obtained, and at the same time, the rotational speed accuracy is greater than the rotational speed obtained by measuring the output gear.
  • the gearbox provided by the present invention comprises a gearbox body and a gearbox speed measuring device.
  • a power output shaft is rotatably arranged in the gearbox body
  • the gearbox speed measuring device is the above-mentioned gearbox speed measuring device
  • the speed measuring gear output shaft is transmission-connected to one end of the power output shaft along the extension direction of the power output shaft
  • the speed sensor is arranged in the gearbox body. Due to the above-mentioned gearbox speed measuring device, the above-mentioned advantages are also obtained, which will not be repeated here.
  • FIG1 is a schematic structural diagram of a gearbox provided in an embodiment of the present invention.
  • FIG2 is a schematic diagram of a partial structure of a gear box provided in an embodiment of the present invention.
  • FIG3 is a schematic diagram of an oil passage of a gearbox speed measuring device provided in an embodiment of the present invention.
  • FIG4 is a schematic structural diagram of a gearbox speed measuring device provided in an embodiment of the present invention.
  • FIG5 is a partial enlarged view of point K in FIG4 ;
  • FIG6 is a partial cross-sectional view of a speed measuring gear output shaft provided by an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of the output shaft of the speed measuring gear provided in an embodiment of the present invention.
  • 10 is the output shaft of the speed measuring gear
  • 11 is the gear mounting part
  • 12 is the connecting end plate
  • 13 is the matching part of the output shaft
  • 14 is the connecting part of the output shaft
  • 15 is the oil groove
  • 16 is the shaft connecting hole
  • 20 is the speed measuring gear
  • 30 is the speed sensor
  • 40 is the shaft end nut
  • 100 is the gear box body
  • 110 is the box body
  • 111 is the first oil inlet passage
  • 112 is the second oil inlet passage
  • 120 is the outer end cover of the output shaft
  • 121 is the oil guide plate
  • 122 is the oil return passage
  • 130 is the speed measuring connection cover
  • 140 is the inner end cover of the output shaft
  • 150 is the power output shaft
  • 151 is the inner ring of the tapered roller bearing
  • 152 is the outer ring of the tapered roller bearing
  • 153 is the spline
  • 160 is the output gear
  • 170 is the oil accumulation pool.
  • the core of the present invention is to disclose a gearbox speed measuring device to improve the speed measuring accuracy of the gearbox.
  • Another core of the present invention is to disclose a gearbox having the above-mentioned gearbox speed measuring device.
  • the gearbox speed measuring device disclosed in the embodiment of the present invention is used to detect the speed of the power output shaft 150 of the gearbox, and the power output shaft 150 is provided with an output gear 160.
  • the output gear 160 is used as a speed measuring gear. Since its function is to transmit torque, the number of teeth is small, so that the speed sensor 30 that determines the speed by detecting the gear teeth of the output gear 160 has a low detection accuracy.
  • the gearbox speed measuring device disclosed in the embodiment of the present invention includes a speed measuring gear output shaft 10 , a speed measuring gear 20 and a speed sensor 30 .
  • the speed measuring gear output shaft 10 is used to be connected to one end of the power output shaft 150 in a transmission manner along the extension direction of the power output shaft 150, and can be directly connected to one end of the power output shaft 150, so that the speed measuring gear output shaft 10 and the power output shaft 150 have the same rotation speed, so that the speed of the power output shaft 150 can be indirectly obtained by detecting the speed of the speed measuring gear output shaft 10. If the transmission connection between the power output shaft 150 and the speed measuring gear output shaft 10 is achieved through a transmission device, the speed change caused by the transmission ratio can be offset by software.
  • the speed measuring gear 20 is connected to the speed measuring gear output shaft 10 in a transmission manner, so that the speed measuring gear 20 and the speed measuring gear output shaft 10 have the same rotation speed, and further, the speed measuring gear 20 and the power output shaft 150 have the same rotation speed, so that the rotation speed of the power output shaft 150 can be indirectly obtained by detecting the rotation speed of the speed measuring gear 20.
  • the number of teeth of the speed measuring gear 20 is greater than the number of teeth of the output gear 160.
  • the speed measuring gear 20 and the speed measuring gear output shaft 10 can be connected by a key, and a limited step is provided on the speed measuring gear output shaft 10, and the speed measuring gear 20 can be pressed against the limited step of the speed measuring gear output shaft 10 by the shaft end nut 40. It can be understood by those skilled in the art that the more teeth the speed measuring gear 20 has, the higher the measurement accuracy is, but the greater the manufacturing difficulty is. Those skilled in the art can design the number of teeth of the speed measuring gear 20 according to the requirements.
  • the rotation speed sensor 30 is used to measure the rotation speed of the speed measuring gear 20 .
  • the gearbox speed measuring device disclosed in the present invention can indirectly obtain the speed of the power output shaft 150 by detecting the speed of the speed measuring gear 20. Compared with the prior art that obtains the speed of the power output shaft 150 by measuring the speed of the output gear 160, the present invention obtains the speed of the power output shaft 150 by detecting the speed of the speed measuring gear 20 having more teeth than the output gear 160, thereby improving the accuracy of speed measurement.
  • the speed measuring gear output shaft 10 includes a gear mounting portion 11, an output shaft matching portion 13 and an output shaft connecting portion 14.
  • the first end of the gear mounting portion 11 is a connecting end plate 12, which is used to connect to the output shaft matching portion 13.
  • the speed measuring gear 20 is fixedly mounted on the second end of the gear mounting portion 11, so that the speed measuring gear 20 and the gear mounting portion 11 have the same rotation speed.
  • the first end of the output shaft mating portion 13 is connected to the connecting end plate 12, and the second end extends in the direction of the speed measuring gear 20, that is, the output shaft mating portion 13 and the speed measuring gear 20 are located on the same side of the connecting end plate 12, and the output shaft mating portion 13 and the gear mounting portion 11 have a certain overlapping interval along the extension direction of the power output shaft 150; the second end of the output shaft mating portion 13 is nested with the end hole of the power output shaft 150 to form a positioning, which can enhance the connection strength between the speed measuring gear output shaft 10 and the power output shaft 150; there is a gap between the output shaft mating portion 13 and the gear mounting portion 11, which is used to form a concave cavity to cooperate with the oil circuit in the gear box.
  • the output shaft connection part 14, the output shaft matching part 13 and the gear mounting part 11 are an integrated structure, so that the speed measuring gear output shaft 10 has sufficient connection strength.
  • the output shaft connection part 14 is installed on the end surface of the power output shaft 150 through a fastener.
  • the fastener can be a bolt, and a shaft connection hole 16 is opened on the output shaft connection part 14. The fastener passes through the shaft connection hole 16 and is threadedly connected to the threaded hole of the power output shaft 150.
  • the present invention also discloses a gearbox, including a gearbox body 100 and a gearbox speed measuring device.
  • a power output shaft 150 is rotatably arranged in the gearbox body 100 for outputting power.
  • the gearbox speed measuring device is the above-mentioned gearbox speed measuring device, the speed measuring gear output shaft 10 is transmission-connected to one end of the power output shaft 150 along the extension direction of the power output shaft 150, and the speed sensor 30 is arranged on the gearbox body 100. Since the above-mentioned gearbox speed measuring device is provided, the above-mentioned advantages are also obtained, which will not be repeated here.
  • the power output shaft 150 is connected to the output gear 160, which is sleeved on the power output shaft 150, and the power output shaft 150 and the output gear 160 are connected by a connecting member, which may be a bolt.
  • the power output shaft 150 and the gear box 100 can be rotatably connected through a tapered roller bearing, and the tapered roller bearing includes a tapered roller bearing inner ring 151 and a tapered roller bearing outer ring 152.
  • the end openings at both ends of the gear box 100 are respectively provided with an output shaft inner end cover 140 and an output shaft outer end cover 120 by bolt connection, and the output shaft inner end cover 140 and the output shaft outer end cover 120 are sealed with the gear box 100 by an O-ring.
  • Two sets of tapered roller bearings are arranged on the power output shaft 150, and the tapered roller bearing inner rings 151 of the two tapered roller bearings are respectively sleeved on the two ends of the power output shaft 150, the power output shaft 150 is arranged in the gear box body 100, and the tapered roller bearing outer rings 152 of the two tapered roller bearings are respectively arranged on the side of the output shaft inner end cover 140 and the output shaft outer end cover 120 facing the gear box body 100, so that the power output shaft 150 is rotatably arranged in the gear box body 100.
  • the speed sensor 30 is a Hall sensor.
  • the Hall sensor is a magnetoelectric sensor based on the Hall effect.
  • the speed measuring gear 20 is made of a material with good magnetic conductivity. Due to the Hall effect, when the speed measuring gear 20 rotates, each time it rotates through a tooth root and tooth top, the magnetic field inside the Hall sensor changes and generates different Hall electromotive forces, which are recorded as a change cycle. By calculating the time of the change cycle, the speed of the power output shaft 150 can be calculated.
  • two speed sensors 30 are arranged on the gear box body 100.
  • one speed sensor 30 fails, the other can be used as a backup to avoid the failure of one speed sensor 30 resulting in untimely transmission of speed measurement data to the gear box power output shaft 150.
  • the gearbox body 100 includes a box body 110 , an output shaft outer end cover 120 and a speed measuring connection cover 130 .
  • the power output shaft 150 is rotatably disposed in the box body 110, and is used to output power in conjunction with the output gear 160. Further, the power output shaft 150 is provided with an output shaft inner hole, which is communicated with the end hole of the power output shaft 150, and is used to cooperate with the drive shaft in transmission, and the output shaft inner hole and the drive shaft can be connected through a spline 153.
  • the output shaft outer end cover 120 is disposed on one side of the box body 110 , which is a prior art and will not be described in detail.
  • the speed measuring gear output shaft 10 is passed through the output shaft outer end cover 120 , and one end extending out of the box body 110 is used for transmission cooperation with the speed measuring gear 20 .
  • the speed measuring connection cover 130 is arranged on the side of the output shaft outer end cover 120 away from the box body 110, and a speed measuring gear cavity is formed between the speed measuring connection cover 130 and the output shaft outer end cover 120.
  • the speed measuring gear 20 is arranged in the speed measuring gear cavity.
  • the formed speed measuring gear cavity provides a closed working environment for the speed measuring gear 20 to avoid the influence of external dust.
  • the speed sensor 30 is arranged on the cavity wall of the speed measuring gear cavity, and is used to obtain the speed of the power output shaft 150 by measuring the speed of the speed measuring gear 20.
  • the gearbox structure disclosed in the present invention is compact and the existing structure of the gearbox is maintained as much as possible, with less modification to the gearbox, so that the modified gearbox has a smaller volume and lighter weight.
  • the speed measurement accuracy is improved and the influence of factors such as vibration on the life of the speed sensor 30 after the probe of the speed sensor 30 is extended into the box body 110 is avoided.
  • the output shaft outer end cover 120 includes a support end plate, a first connection portion and a second connection portion.
  • a support hole for the speed measuring gear output shaft 10 to pass through is opened on the support end plate, and the gear mounting portion 11 of the speed measuring gear output shaft 10 passes through the support hole and is transmission-connected to the speed measuring gear 20 .
  • the first connection part and the second connection part are both arranged on the outside of the support end plate and extend to both sides of the support end plate respectively.
  • one end of the first connection part is embedded in the end hole of the box body 110, which is used to cooperate with the support end plate and seal the box body 110.
  • the outside of the first connection part is provided with a fastening plate connected to the end face of the box body 110, which is used to fix the output shaft outer end cover 120 to the box body 110.
  • the fastening plate is provided with a through hole, and the end face of the box body 110 is provided with a threaded hole. The bolt passes through the through hole and is threadedly locked with the threaded hole.
  • the second connection part is connected to the speed measuring connection cover 130, and a speed measuring gear cavity is formed between the support end plate, the second connection part and the speed measuring connection cover 130 to provide a closed working environment for the speed measuring gear 20.
  • two mounting seats are provided on the second connection part, and a speed sensor 30 is provided on each mounting seat, the angle between the two speed sensors 30 on the mounting plane of the second connection part is 30°, and the speed sensor 30 and the second connection part are sealed by an O-ring.
  • the second connection part is connected to the speed measuring connection cover 130 by bolts.
  • the speed measuring gear output shaft 10 and the supporting hole are sealed by a labyrinth sealing structure.
  • the speed measuring gear output shaft 10 is provided with an oil groove 15, which is located on the connecting end plate 12 of the gear mounting portion 11 and is connected to the inner hole of the output shaft 150.
  • An oil guide plate 121 for guiding oil to the oil groove 15 is provided on the side of the support end plate close to the power output shaft 150.
  • One end of the oil guide plate 121 extends between the output shaft matching portion 13 of the speed measuring gear output shaft 10 and the gear mounting portion 11.
  • the support end plate is provided with an oil return channel 122, and the two ends of the oil return channel 122 are respectively connected to the speed measuring gear cavity and the box body 110.
  • the two ends of the oil return channel 122 are respectively connected to the speed measuring gear cavity and the box body 110.
  • the housing body 110 is provided with a first oil inlet passage 111, and the first connecting portion is provided with a second oil inlet passage 112, and the first oil inlet passage 111 and the second oil inlet passage 112 are connected. Since the lubricating oil will be thrown out during the rotation of the output gear 160, the splashed lubricating oil can be collected by the oil accumulation pool provided in the housing body 110, and the lubricating oil in the oil accumulation pool can flow into the first oil inlet passage 111 and into the second oil inlet passage 112 under the action of gravity.
  • Part of the lubricating oil entering the second oil inlet passage 112 will flow vertically downward into the oil guide plate 121 provided on the support end plate, and pass through the oil groove 15 along the oil guide plate 121 and finally flow into the output shaft inner hole of the power output shaft 150; part of the lubricating oil will flow downward along the support end plate wall to the tapered roller bearing to lubricate the tapered roller bearing and finally flow back into the housing body 110; part of the lubricating oil will flow into the speed measuring gear cavity along the support hole on the support end plate, and flow back into the housing body 110 through the return oil passage 122.
  • the speed measuring gear output shaft 10 and the speed measuring gear 20 of the gearbox speed measuring device disclosed in the embodiment of the present invention are both sealed in the gearbox body 100, and the sealing and oil return structure of the gearbox can ensure that during the rotation of the output gear 160, the lubricating oil can fully lubricate the rotating parts and ensure that the lubricating oil is tightly sealed and does not leak, and at the same time, the full utilization of the lubricating oil can be ensured through the oil return structure.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

The present invention provides a gearbox speed measuring device, which is used for measuring the rotational speed of a power output shaft of a gearbox, wherein an output gear is provided on the power output shaft. The gearbox speed measuring device comprises a speed measuring gear output shaft, a speed measuring gear, and a rotational speed sensor. The speed measuring gear output shaft is used for being transmittingly connected to one end of the power output shaft in the extension direction of the power output shaft, so that the rotational speed of the speed measuring gear output shaft is the same as that of the power output shaft. The speed measuring gear is transmittingly connected to the speed measuring gear output shaft and has the same rotational speed as the speed measuring gear output shaft and the power output shaft, the number of teeth of the speed measuring gear is greater than that of the output gear, and the rotational speed sensor is used for measuring the rotational speed of the speed measuring gear. By measuring the rotational speed of the speed measuring gear, the rotational speed of the power output shaft is obtained, and the precision of the obtained rotational speed is greater than that of the rotational speed obtained by measuring the output gear. A gearbox provided by the present invention comprises a gearbox body and the gearbox speed measuring device.

Description

齿轮箱测速装置和齿轮箱Gear box speed measuring device and gear box
本申请要求于2022年11月25日提交中国专利局、申请号为202211497457.9发明名称为“齿轮箱测速装置和齿轮箱”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed with the China Patent Office on November 25, 2022, with application number 202211497457.9 and invention name “Gearbox speed measuring device and gearbox”, the entire contents of which are incorporated by reference in this application.
技术领域Technical Field
本发明涉及齿轮箱技术领域，更具体地说，涉及一种齿轮箱测速装置和齿轮箱。The present invention relates to the technical field of gear boxes, and more particularly to a gear box speed measuring device and a gear box.
背景技术Background technique
跨座式单轨车辆与常见的地铁、轻轨等钢轮车辆在结构和外形上有很大不同，它的车辆骑跨在单根轨道梁上运行，且走行轮由橡胶充气轮胎取代传统车辆的钢制车轮实现载运。The straddle-type monorail vehicle is very different from common steel-wheeled vehicles such as subways and light rails in structure and appearance. Its vehicle runs astride a single track beam, and its running wheels are replaced by rubber pneumatic tires instead of the steel wheels of traditional vehicles to achieve carrying.
现有跨座式单轨车辆的齿轮箱测速方案是将测速传感器安装于齿轮箱的动力输出轴，将动力输出轴上的输出齿轮作为测速齿轮，一般输出齿轮为输出被动斜齿轮，其主要功能为传递扭矩，具有模数较大、齿数较少的特点，采用输出齿轮作为测速齿轮会导致测速精度较低，在对行车数据准确程度要求越来越高的前提下，这种测速方案已无法满足测速需求。The existing gearbox speed measurement scheme for straddle-type monorail vehicles is to install a speed sensor on the power output shaft of the gearbox, and use the output gear on the power output shaft as a speed measuring gear. Generally, the output gear is an output passive helical gear, and its main function is to transmit torque. It has the characteristics of a large module and a small number of teeth. Using the output gear as a speed measuring gear will result in low speed measurement accuracy. Under the premise of increasingly higher requirements for the accuracy of driving data, this speed measurement scheme can no longer meet the speed measurement needs.
因此，如何提高齿轮箱的测速精度，成为本领域技术人员亟待解决的技术问题。Therefore, how to improve the speed measurement accuracy of the gearbox has become a technical problem that needs to be solved urgently by technical personnel in this field.
发明内容Summary of the invention
有鉴于此，本发明的目的在于提供一种齿轮箱测速装置，以提高齿轮箱的测速精度。In view of this, an object of the present invention is to provide a gearbox speed measuring device to improve the speed measuring accuracy of the gearbox.
本发明的另一目的在于提供一种具有上述齿轮箱测速装置的齿轮箱。Another object of the present invention is to provide a gearbox having the above-mentioned gearbox speed measuring device.
为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种齿轮箱测速装置，用于检测齿轮箱的动力输出轴的转速，所述动力输出轴上设置有输出齿轮，包括：A gearbox speed measuring device is used to detect the speed of a power output shaft of a gearbox, wherein the power output shaft is provided with an output gear, and comprises:
测速齿轮输出轴，用于沿所述动力输出轴的延伸方向传动连接于所述动力 输出轴的一端；A speed measuring gear output shaft, used for transmission connection to one end of the power output shaft along the extension direction of the power output shaft;
测速齿轮，传动连接于所述测速齿轮输出轴，且所述测速齿轮的齿数大于所述输出齿轮的齿数；A speed measuring gear, which is transmission-connected to the speed measuring gear output shaft, and the number of teeth of the speed measuring gear is greater than the number of teeth of the output gear;
转速传感器，用于测量所述测速齿轮的转速。The rotation speed sensor is used to measure the rotation speed of the speed measuring gear.
优选地，在上述的齿轮箱测速装置中，所述测速齿轮输出轴包括：Preferably, in the above-mentioned gear box speed measuring device, the speed measuring gear output shaft comprises:
齿轮安装部，所述齿轮安装部的第一端为连接端板，所述测速齿轮固定套装于所述齿轮安装部的第二端；A gear mounting portion, wherein the first end of the gear mounting portion is a connecting end plate, and the speed measuring gear is fixedly sleeved on the second end of the gear mounting portion;
输出轴配合部，第一端连接于所述连接端板，第二端向所述测速齿轮的方向延伸，并与所述动力输出轴的端部孔嵌套配合，且所述输出轴配合部与所述齿轮安装部之间具有间隙；An output shaft matching portion, wherein the first end is connected to the connecting end plate, the second end extends in the direction of the speed measuring gear and is nested with the end hole of the power output shaft, and there is a gap between the output shaft matching portion and the gear mounting portion;
输出轴连接部，连接于所述输出轴配合部的第二端，用于与所述动力输出轴的端面连接。The output shaft connecting portion is connected to the second end of the output shaft matching portion and is used to be connected to the end surface of the power output shaft.
优选地，在上述的齿轮箱测速装置中，所述输出轴连接部、输出轴配合部与所述齿轮安装部为一体式结构，且所述输出轴连接部通过紧固件安装于所述动力输出轴的端面上。Preferably, in the above-mentioned gearbox speed measuring device, the output shaft connecting portion, the output shaft matching portion and the gear mounting portion are an integrated structure, and the output shaft connecting portion is mounted on the end face of the power output shaft by means of fasteners.
一种齿轮箱，包括：A gear box, comprising:
齿轮箱体，所述齿轮箱体内转动设置有动力输出轴；A gear box body, wherein a power output shaft is rotatably arranged in the gear box body;
齿轮箱测速装置，为上述的齿轮箱测速装置，所述测速齿轮输出轴沿所述动力输出轴的延伸方向传动连接于所述动力输出轴的一端，所述转速传感器设置于所述齿轮箱体。The gearbox speed measuring device is the above-mentioned gearbox speed measuring device, wherein the speed measuring gear output shaft is transmission-connected to one end of the power output shaft along the extension direction of the power output shaft, and the speed sensor is arranged on the gearbox body.
优选地，在上述的齿轮箱中，所述转速传感器为霍尔传感器，且为设置于所述齿轮箱体的两个。Preferably, in the above-mentioned gearbox, the rotation speed sensors are Hall sensors, and two of them are arranged on the gearbox body.
优选地，在上述的齿轮箱中，所述齿轮箱体包括：Preferably, in the above-mentioned gear box, the gear box body comprises:
箱体本体，所述动力输出轴转动设置于所述箱体本体内；A box body, wherein the power output shaft is rotatably disposed in the box body;
输出轴外端盖，设置于所述箱体本体的一侧，所述测速齿轮输出轴穿设于所述输出轴外端盖；An output shaft outer end cover is arranged on one side of the box body, and the speed measuring gear output shaft passes through the output shaft outer end cover;
测速连接盖，设置于所述输出轴外端盖远离所述箱体本体的一侧，且所述测速连接盖与所述输出轴外端盖之间形成测速齿轮腔，所述测速齿轮设置于所述测速齿轮腔内，所述转速传感器设置于所述测速齿轮腔的腔体壁上。The speed measuring connecting cover is arranged on the side of the output shaft outer end cover away from the box body, and a speed measuring gear cavity is formed between the speed measuring connecting cover and the output shaft outer end cover, the speed measuring gear is arranged in the speed measuring gear cavity, and the speed sensor is arranged on the cavity wall of the speed measuring gear cavity.
优选地，在上述的齿轮箱中，所述输出轴外端盖包括：Preferably, in the above-mentioned gearbox, the output shaft outer end cover comprises:
支撑端板，所述支撑端板上开设有供所述测速齿轮输出轴穿过的支撑孔；A supporting end plate, wherein the supporting end plate is provided with a supporting hole for the output shaft of the speed measuring gear to pass through;
第一连接部和第二连接部，均设置于所述支撑端板的外侧，且分别向所述支撑端板的两侧延伸，所述第一连接部的一端嵌入所述箱体本体的端部孔内，且所述第一连接部的外侧设置有与所述箱体本体的端面连接的紧固板，所述第二连接部与所述测速连接盖连接，且所述支撑端板、第二连接部与所述测速连接盖之间形成所述测速齿轮腔。The first connecting part and the second connecting part are both arranged on the outer side of the supporting end plate and extend to both sides of the supporting end plate respectively. One end of the first connecting part is embedded in the end hole of the box body, and a fastening plate connected to the end surface of the box body is arranged on the outer side of the first connecting part. The second connecting part is connected to the speed measuring connecting cover, and the speed measuring gear cavity is formed between the supporting end plate, the second connecting part and the speed measuring connecting cover.
优选地，在上述的齿轮箱中，所述测速齿轮输出轴与所述支撑孔之间通过迷宫型密封结构进行密封。Preferably, in the above-mentioned gear box, the speed measuring gear output shaft and the supporting hole are sealed by a labyrinth sealing structure.
优选地，在上述的齿轮箱中，所述测速齿轮输出轴设置有通油槽，所述支撑端板靠近所述动力输出轴的一侧设置有用于向所述通油槽内导油的导油板。Preferably, in the above-mentioned gear box, the speed measuring gear output shaft is provided with an oil groove, and an oil guide plate for guiding oil into the oil groove is provided on a side of the support end plate close to the power output shaft.
优选地，在上述的齿轮箱中，所述支撑端板开设有回油道，所述回油道的两端分别与所述测速齿轮腔和所述箱体本体连通；Preferably, in the above-mentioned gear box, the support end plate is provided with an oil return passage, and both ends of the oil return passage are respectively connected with the speed measuring gear cavity and the box body;
所述箱体本体设置有第一进油道，所述第一连接部设置有第二进油道，所述第一进油道和所述第二进油道连通。The box body is provided with a first oil inlet passage, the first connecting portion is provided with a second oil inlet passage, and the first oil inlet passage is communicated with the second oil inlet passage.
本发明提供的齿轮箱测速装置，用于检测齿轮箱的动力输出轴的转速，动力输出轴上设置有输出齿轮，该齿轮箱测速装置包括测速齿轮输出轴、测速齿轮和转速传感器。测速齿轮输出轴用于沿动力输出轴的延伸方向传动连接于动 力输出轴的一端，使得测速齿轮输出轴与动力输出轴的转速相同。测速齿轮传动连接于测速齿轮输出轴，具有与测速齿轮输出轴和动力输出轴相同的转速，且测速齿轮的齿数大于输出齿轮的齿数，转速传感器用于测量测速齿轮的转速。通过测量测速齿轮的转速，得到动力输出轴的转速，同时得到转速精度大于通过测量输出齿轮得到的转速。The gearbox speed measuring device provided by the present invention is used to detect the rotational speed of the power output shaft of the gearbox. An output gear is provided on the power output shaft. The gearbox speed measuring device includes a speed measuring gear output shaft, a speed measuring gear and a speed sensor. The speed measuring gear output shaft is used to be transmission-connected to one end of the power output shaft along the extension direction of the power output shaft, so that the speed measuring gear output shaft has the same rotational speed as the power output shaft. The speed measuring gear is transmission-connected to the speed measuring gear output shaft, has the same rotational speed as the speed measuring gear output shaft and the power output shaft, and the number of teeth of the speed measuring gear is greater than the number of teeth of the output gear. The speed sensor is used to measure the rotational speed of the speed measuring gear. By measuring the rotational speed of the speed measuring gear, the rotational speed of the power output shaft is obtained, and at the same time, the rotational speed accuracy is greater than the rotational speed obtained by measuring the output gear.
本发明提供的齿轮箱包括齿轮箱体和齿轮箱测速装置。齿轮箱体内转动设置有动力输出轴，齿轮箱测速装置为上述的齿轮箱测速装置，测速齿轮输出轴沿动力输出轴的延伸方向传动连接于动力输出轴的一端，转速传感器设置于齿轮箱体。由于具有上述齿轮箱测速装置，所以同样具有上述优点，在此不再赘述。The gearbox provided by the present invention comprises a gearbox body and a gearbox speed measuring device. A power output shaft is rotatably arranged in the gearbox body, the gearbox speed measuring device is the above-mentioned gearbox speed measuring device, the speed measuring gear output shaft is transmission-connected to one end of the power output shaft along the extension direction of the power output shaft, and the speed sensor is arranged in the gearbox body. Due to the above-mentioned gearbox speed measuring device, the above-mentioned advantages are also obtained, which will not be repeated here.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
图1为本发明实施例提供的齿轮箱的结构示意图；FIG1 is a schematic structural diagram of a gearbox provided in an embodiment of the present invention;
图2为本发明实施例提供的齿轮箱的局部结构示意图；FIG2 is a schematic diagram of a partial structure of a gear box provided in an embodiment of the present invention;
图3为本发明实施例提供的齿轮箱测速装置的油道示意图；FIG3 is a schematic diagram of an oil passage of a gearbox speed measuring device provided in an embodiment of the present invention;
图4为本发明实施例提供的齿轮箱测速装置的结构示意图；FIG4 is a schematic structural diagram of a gearbox speed measuring device provided in an embodiment of the present invention;
图5为图4中K处的局部放大图；FIG5 is a partial enlarged view of point K in FIG4 ;
图6为本发明实施例提供的测速齿轮输出轴的局部剖视图；FIG6 is a partial cross-sectional view of a speed measuring gear output shaft provided by an embodiment of the present invention;
图7为本发明实施例提供的测速齿轮输出轴的剖面图。FIG. 7 is a cross-sectional view of the output shaft of the speed measuring gear provided in an embodiment of the present invention.
其中，10为测速齿轮输出轴，11为齿轮安装部，12为连接端板，13为输出轴配合部，14为输出轴连接部，15为通油槽，16为轴连接孔，20为测速齿轮，30为转速传感器，40为轴端螺母；Among them, 10 is the output shaft of the speed measuring gear, 11 is the gear mounting part, 12 is the connecting end plate, 13 is the matching part of the output shaft, 14 is the connecting part of the output shaft, 15 is the oil groove, 16 is the shaft connecting hole, 20 is the speed measuring gear, 30 is the speed sensor, and 40 is the shaft end nut;
100为齿轮箱体，110为箱体本体，111为第一进油道，112为第二进油道，120为输出轴外端盖，121为导油板，122为回油道，130为测速连接盖，140为输出轴内端盖，150为动力输出轴，151为圆锥滚子轴承内圈，152为圆锥滚子轴承外圈，153为花键，160为输出齿轮，170为积油池。100 is the gear box body, 110 is the box body, 111 is the first oil inlet passage, 112 is the second oil inlet passage, 120 is the outer end cover of the output shaft, 121 is the oil guide plate, 122 is the oil return passage, 130 is the speed measuring connection cover, 140 is the inner end cover of the output shaft, 150 is the power output shaft, 151 is the inner ring of the tapered roller bearing, 152 is the outer ring of the tapered roller bearing, 153 is the spline, 160 is the output gear, and 170 is the oil accumulation pool.
具体实施方式Detailed ways
本发明的核心在于公开一种齿轮箱测速装置，以提高齿轮箱的测速精度。本发明的另一核心在于公开一种具有上述齿轮箱测速装置的齿轮箱。The core of the present invention is to disclose a gearbox speed measuring device to improve the speed measuring accuracy of the gearbox. Another core of the present invention is to disclose a gearbox having the above-mentioned gearbox speed measuring device.
以下，参照附图对实施例进行说明。此外，下面所示的实施例不对权利要求所记载的发明内容起任何限定作用。另外，下面实施例所表示的构成的全部内容不限于作为权利要求所记载的发明的解决方案所必需的。The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention described in the claims. In addition, the entire contents of the configurations shown in the following embodiments are not limited to the solutions required as the invention described in the claims.
如图1所示，本发明实施例公开的齿轮箱测速装置，用于检测齿轮箱的动力输出轴150的转速，动力输出轴150上设置有输出齿轮160。现有技术中，输出齿轮160作为测速齿轮，由于其功能为传递扭矩，齿数较少，使得通过检测输出齿轮160的轮齿来判断转速的转速传感器30的检测精度较低。As shown in Fig. 1, the gearbox speed measuring device disclosed in the embodiment of the present invention is used to detect the speed of the power output shaft 150 of the gearbox, and the power output shaft 150 is provided with an output gear 160. In the prior art, the output gear 160 is used as a speed measuring gear. Since its function is to transmit torque, the number of teeth is small, so that the speed sensor 30 that determines the speed by detecting the gear teeth of the output gear 160 has a low detection accuracy.
基于此，本发明实施例公开的齿轮箱测速装置包括测速齿轮输出轴10、测速齿轮20和转速传感器30。Based on this, the gearbox speed measuring device disclosed in the embodiment of the present invention includes a speed measuring gear output shaft 10 , a speed measuring gear 20 and a speed sensor 30 .
其中，测速齿轮输出轴10用于沿动力输出轴150的延伸方向传动连接于动力输出轴150的一端，具体的可通过直连的方式连接在动力输出轴150的一端，使得测速齿轮输出轴10与动力输出轴150具有相同的转动速度，以便通过检测测速齿轮输出轴10的转速间接得到动力输出轴150的转速。若通过传动装置实现动力输出轴150与测速齿轮输出轴10的传动连接，可通过软件抵消掉传动比导致的转速变化。The speed measuring gear output shaft 10 is used to be connected to one end of the power output shaft 150 in a transmission manner along the extension direction of the power output shaft 150, and can be directly connected to one end of the power output shaft 150, so that the speed measuring gear output shaft 10 and the power output shaft 150 have the same rotation speed, so that the speed of the power output shaft 150 can be indirectly obtained by detecting the speed of the speed measuring gear output shaft 10. If the transmission connection between the power output shaft 150 and the speed measuring gear output shaft 10 is achieved through a transmission device, the speed change caused by the transmission ratio can be offset by software.
测速齿轮20传动连接于测速齿轮输出轴10，使测速齿轮20与测速齿轮输出轴10具有相同的转速，进一步地，使测速齿轮20与动力输出轴150具有相同的转速，从而可以通过检测测速齿轮20的转速间接得到动力输出轴150的转速。且测速齿轮20的齿数大于输出齿轮160的齿数。具体地，测速齿轮20与测速齿轮输出轴10之间可以通过键连接，同时测速齿轮输出轴10上设置有限位台阶，可以通过轴端螺母40将测速齿轮20压紧于测速齿轮输出轴10的限位台阶上。本 领域技术人员可以理解的是，测速齿轮20的齿数越多，测量精度越高，但制造难度越大，本领域技术人员可以根据需求设计测速齿轮20的齿数。The speed measuring gear 20 is connected to the speed measuring gear output shaft 10 in a transmission manner, so that the speed measuring gear 20 and the speed measuring gear output shaft 10 have the same rotation speed, and further, the speed measuring gear 20 and the power output shaft 150 have the same rotation speed, so that the rotation speed of the power output shaft 150 can be indirectly obtained by detecting the rotation speed of the speed measuring gear 20. And the number of teeth of the speed measuring gear 20 is greater than the number of teeth of the output gear 160. Specifically, the speed measuring gear 20 and the speed measuring gear output shaft 10 can be connected by a key, and a limited step is provided on the speed measuring gear output shaft 10, and the speed measuring gear 20 can be pressed against the limited step of the speed measuring gear output shaft 10 by the shaft end nut 40. It can be understood by those skilled in the art that the more teeth the speed measuring gear 20 has, the higher the measurement accuracy is, but the greater the manufacturing difficulty is. Those skilled in the art can design the number of teeth of the speed measuring gear 20 according to the requirements.
转速传感器30，用于测量测速齿轮20的转速。The rotation speed sensor 30 is used to measure the rotation speed of the speed measuring gear 20 .
本发明公开的齿轮箱测速装置，可以通过检测测速齿轮20的转速间接得到动力输出轴150的转速。相较于现有技术通过测量输出齿轮160的转速得到动力输出轴150的转速，本发明通过检测齿数多于输出齿轮160的测速齿轮20的转速来得到动力输出轴150的转速，提高了测速的精度。The gearbox speed measuring device disclosed in the present invention can indirectly obtain the speed of the power output shaft 150 by detecting the speed of the speed measuring gear 20. Compared with the prior art that obtains the speed of the power output shaft 150 by measuring the speed of the output gear 160, the present invention obtains the speed of the power output shaft 150 by detecting the speed of the speed measuring gear 20 having more teeth than the output gear 160, thereby improving the accuracy of speed measurement.
为了使测速齿轮输出轴10更好地实现传递动力的作用，结合图6和图7，测速齿轮输出轴10包括齿轮安装部11、输出轴配合部13和输出轴连接部14。In order to enable the speed measuring gear output shaft 10 to better achieve the function of transmitting power, in conjunction with Figures 6 and 7, the speed measuring gear output shaft 10 includes a gear mounting portion 11, an output shaft matching portion 13 and an output shaft connecting portion 14.
齿轮安装部11的第一端为连接端板12，连接端板12用于与输出轴配合部13连接，测速齿轮20固定套装于齿轮安装部11的第二端，使得测速齿轮20与齿轮安装部11具有相同的转速。The first end of the gear mounting portion 11 is a connecting end plate 12, which is used to connect to the output shaft matching portion 13. The speed measuring gear 20 is fixedly mounted on the second end of the gear mounting portion 11, so that the speed measuring gear 20 and the gear mounting portion 11 have the same rotation speed.
输出轴配合部13的第一端连接于连接端板12，第二端向测速齿轮20的方向延伸，即输出轴配合部13和测速齿轮20位于连接端板12的同一侧，且输出轴配合部13与齿轮安装部11沿动力输出轴150的延伸方向具有一定的重合区间；输出轴配合部13的第二端与动力输出轴150的端部孔嵌套配合，形成定位，可增强测速齿轮输出轴10与动力输出轴150之间的连接强度；输出轴配合部13与齿轮安装部11之间具有间隙，用于形成凹腔，以与齿轮箱内的油路进行配合。The first end of the output shaft mating portion 13 is connected to the connecting end plate 12, and the second end extends in the direction of the speed measuring gear 20, that is, the output shaft mating portion 13 and the speed measuring gear 20 are located on the same side of the connecting end plate 12, and the output shaft mating portion 13 and the gear mounting portion 11 have a certain overlapping interval along the extension direction of the power output shaft 150; the second end of the output shaft mating portion 13 is nested with the end hole of the power output shaft 150 to form a positioning, which can enhance the connection strength between the speed measuring gear output shaft 10 and the power output shaft 150; there is a gap between the output shaft mating portion 13 and the gear mounting portion 11, which is used to form a concave cavity to cooperate with the oil circuit in the gear box.
在本发明公开的一具体的实施例中，输出轴连接部14、输出轴配合部13与齿轮安装部11为一体式结构，以使测速齿轮输出轴10具有足够的连接强度。且输出轴连接部14通过紧固件安装于动力输出轴150的端面上。具体地，紧固件可以为螺栓，输出轴连接部14上开设有轴连接孔16，紧固件穿过轴连接孔16螺纹连接在动力输出轴150的螺纹孔上。In a specific embodiment disclosed in the present invention, the output shaft connection part 14, the output shaft matching part 13 and the gear mounting part 11 are an integrated structure, so that the speed measuring gear output shaft 10 has sufficient connection strength. And the output shaft connection part 14 is installed on the end surface of the power output shaft 150 through a fastener. Specifically, the fastener can be a bolt, and a shaft connection hole 16 is opened on the output shaft connection part 14. The fastener passes through the shaft connection hole 16 and is threadedly connected to the threaded hole of the power output shaft 150.
本发明还公开了一种齿轮箱，包括齿轮箱体100和齿轮箱测速装置。齿轮箱体100内转动设置有动力输出轴150，用于输出动力。齿轮箱测速装置为上述的齿轮箱测速装置，测速齿轮输出轴10沿动力输出轴150的延伸方向传动连接于动力输出轴150的一端，转速传感器30设置于齿轮箱体100。由于具有上述的齿轮箱测速装置，所以同样具有上述优点，在此不再赘述。The present invention also discloses a gearbox, including a gearbox body 100 and a gearbox speed measuring device. A power output shaft 150 is rotatably arranged in the gearbox body 100 for outputting power. The gearbox speed measuring device is the above-mentioned gearbox speed measuring device, the speed measuring gear output shaft 10 is transmission-connected to one end of the power output shaft 150 along the extension direction of the power output shaft 150, and the speed sensor 30 is arranged on the gearbox body 100. Since the above-mentioned gearbox speed measuring device is provided, the above-mentioned advantages are also obtained, which will not be repeated here.
具体地，动力输出轴150上传动连接有输出齿轮160，输出齿轮160套设于动力输出轴150上，且动力输出轴150与输出齿轮160通过连接件连接，连接件 可以为螺栓。动力输出轴150与齿轮箱体100之间可用过圆锥滚子轴承转动连接，圆锥滚子轴承包括圆锥滚子轴承内圈151和圆锥滚子轴承外圈152。位于齿轮箱体100两端的端部口分别通过螺栓连接设置有输出轴内端盖140和输出轴外端盖120，且输出轴内端盖140和输出轴外端盖120与齿轮箱体100之间通过O型密封圈密封。动力输出轴150上设置有两套圆锥滚子轴承，且两个圆锥滚子轴承的圆锥滚子轴承内圈151分别套设于动力输出轴150的两端，动力输出轴150设置于齿轮箱体100内，两个圆锥滚子轴承的圆锥滚子轴承外圈152分别设置于输出轴内端盖140和输出轴外端盖120朝向齿轮箱体100的一侧，使得动力输出轴150转动设置于齿轮箱体100内。Specifically, the power output shaft 150 is connected to the output gear 160, which is sleeved on the power output shaft 150, and the power output shaft 150 and the output gear 160 are connected by a connecting member, which may be a bolt. The power output shaft 150 and the gear box 100 can be rotatably connected through a tapered roller bearing, and the tapered roller bearing includes a tapered roller bearing inner ring 151 and a tapered roller bearing outer ring 152. The end openings at both ends of the gear box 100 are respectively provided with an output shaft inner end cover 140 and an output shaft outer end cover 120 by bolt connection, and the output shaft inner end cover 140 and the output shaft outer end cover 120 are sealed with the gear box 100 by an O-ring. Two sets of tapered roller bearings are arranged on the power output shaft 150, and the tapered roller bearing inner rings 151 of the two tapered roller bearings are respectively sleeved on the two ends of the power output shaft 150, the power output shaft 150 is arranged in the gear box body 100, and the tapered roller bearing outer rings 152 of the two tapered roller bearings are respectively arranged on the side of the output shaft inner end cover 140 and the output shaft outer end cover 120 facing the gear box body 100, so that the power output shaft 150 is rotatably arranged in the gear box body 100.
为了提高测速精度，转速传感器30为霍尔传感器。霍尔传感器是一种基于霍尔效应的磁电传感器，测速齿轮20采用导磁性良好的材料，由于霍尔效应，当测速齿轮20旋转时，每转过一个齿根齿顶，霍尔传感器内部的磁场发生一次变化，并产生不同的霍尔电动势，记作一个变化周期，通过计算变化周期的时间可计算动力输出轴150的转速。In order to improve the speed measurement accuracy, the speed sensor 30 is a Hall sensor. The Hall sensor is a magnetoelectric sensor based on the Hall effect. The speed measuring gear 20 is made of a material with good magnetic conductivity. Due to the Hall effect, when the speed measuring gear 20 rotates, each time it rotates through a tooth root and tooth top, the magnetic field inside the Hall sensor changes and generates different Hall electromotive forces, which are recorded as a change cycle. By calculating the time of the change cycle, the speed of the power output shaft 150 can be calculated.
为了防止转速传感器30在作业过程中发生故障，转速传感器30为设置于齿轮箱体100的两个，当一个转速传感器30发生故障，另一个可作为备用，以避免一个转速传感器30失灵导致对齿轮箱动力输出轴150的测速数据传输不及时。In order to prevent the speed sensor 30 from malfunctioning during operation, two speed sensors 30 are arranged on the gear box body 100. When one speed sensor 30 fails, the other can be used as a backup to avoid the failure of one speed sensor 30 resulting in untimely transmission of speed measurement data to the gear box power output shaft 150.
为了更好地实现齿轮箱100的功能，齿轮箱体100包括箱体本体110、输出轴外端盖120和测速连接盖130。In order to better realize the function of the gearbox 100 , the gearbox body 100 includes a box body 110 , an output shaft outer end cover 120 and a speed measuring connection cover 130 .
动力输出轴150转动设置于箱体本体110内，用于与输出齿轮160传动配合进行动力输出。进一步地，动力输出轴150设置有输出轴内孔，输出轴内孔与动力输出轴150的端部孔连通，用于与驱动轴传动配合，输出轴内孔与驱动轴之间可通过花键153进行连接。The power output shaft 150 is rotatably disposed in the box body 110, and is used to output power in conjunction with the output gear 160. Further, the power output shaft 150 is provided with an output shaft inner hole, which is communicated with the end hole of the power output shaft 150, and is used to cooperate with the drive shaft in transmission, and the output shaft inner hole and the drive shaft can be connected through a spline 153.
输出轴外端盖120设置于箱体本体110的一侧，此为现有技术，在此不再赘述。测速齿轮输出轴10穿设于输出轴外端盖120，外伸于箱体本体110的一端用于与测速齿轮20传动配合。The output shaft outer end cover 120 is disposed on one side of the box body 110 , which is a prior art and will not be described in detail. The speed measuring gear output shaft 10 is passed through the output shaft outer end cover 120 , and one end extending out of the box body 110 is used for transmission cooperation with the speed measuring gear 20 .
测速连接盖130设置于输出轴外端盖120远离箱体本体110的一侧，且测速连接盖130与输出轴外端盖120之间形成测速齿轮腔，测速齿轮20设置于测速齿轮腔内，形成的测速齿轮腔为测速齿轮20提供密闭的作业环境，以避免外界粉 尘的影响。转速传感器30设置于测速齿轮腔的腔体壁上，用于通过测量测速齿轮20的转速从而得到动力输出轴150的转速。The speed measuring connection cover 130 is arranged on the side of the output shaft outer end cover 120 away from the box body 110, and a speed measuring gear cavity is formed between the speed measuring connection cover 130 and the output shaft outer end cover 120. The speed measuring gear 20 is arranged in the speed measuring gear cavity. The formed speed measuring gear cavity provides a closed working environment for the speed measuring gear 20 to avoid the influence of external dust. The speed sensor 30 is arranged on the cavity wall of the speed measuring gear cavity, and is used to obtain the speed of the power output shaft 150 by measuring the speed of the speed measuring gear 20.
本领域技术人员可以理解，相较于将测速齿轮20安装于输出齿轮160旁，并将转速传感器30的探头伸入箱体本体110的内部，本发明公开的齿轮箱结构设计紧凑，且尽可能保证了齿轮箱的现有结构，对齿轮箱的改动量较少，使改动后的齿轮箱的体积较小、重量较轻。同时提高了测速的精度以及并避免了转速传感器30的探头伸入箱体本体110后由于振动等因素对转速传感器30的寿命的影响。Those skilled in the art can understand that, compared with installing the speed measuring gear 20 beside the output gear 160 and extending the probe of the speed sensor 30 into the interior of the box body 110, the gearbox structure disclosed in the present invention is compact and the existing structure of the gearbox is maintained as much as possible, with less modification to the gearbox, so that the modified gearbox has a smaller volume and lighter weight. At the same time, the speed measurement accuracy is improved and the influence of factors such as vibration on the life of the speed sensor 30 after the probe of the speed sensor 30 is extended into the box body 110 is avoided.
为了实现输出轴外端盖120所承担的支撑、密封等多种功能，结合图2，输出轴外端盖120包括支撑端板、第一连接部和第二连接部。In order to realize the multiple functions of the output shaft outer end cover 120 such as support and sealing, referring to FIG. 2 , the output shaft outer end cover 120 includes a support end plate, a first connection portion and a second connection portion.
支撑端板上开设有供测速齿轮输出轴10穿过的支撑孔，测速齿轮输出轴10的齿轮安装部11穿过支撑孔并与测速齿轮20传动连接。A support hole for the speed measuring gear output shaft 10 to pass through is opened on the support end plate, and the gear mounting portion 11 of the speed measuring gear output shaft 10 passes through the support hole and is transmission-connected to the speed measuring gear 20 .
第一连接部和第二连接部，均设置于支撑端板的外侧，且分别向支撑端板的两侧延伸。其中，第一连接部的一端嵌入箱体本体110的端部孔内，用于与支撑端板配合并对箱体本体110进行密封，第一连接部的外侧设置有与箱体本体110的端面连接的紧固板，用于将输出轴外端盖120与箱体本体110进行固定。具体地，紧固板开设有通孔，箱体本体110的端面开设有螺纹孔，螺栓穿过通孔并与螺纹孔螺纹配合锁紧。第二连接部与测速连接盖130连接，且支撑端板、第二连接部与测速连接盖130之间形成测速齿轮腔，以为测速齿轮20提供密闭的作业环境。The first connection part and the second connection part are both arranged on the outside of the support end plate and extend to both sides of the support end plate respectively. Among them, one end of the first connection part is embedded in the end hole of the box body 110, which is used to cooperate with the support end plate and seal the box body 110. The outside of the first connection part is provided with a fastening plate connected to the end face of the box body 110, which is used to fix the output shaft outer end cover 120 to the box body 110. Specifically, the fastening plate is provided with a through hole, and the end face of the box body 110 is provided with a threaded hole. The bolt passes through the through hole and is threadedly locked with the threaded hole. The second connection part is connected to the speed measuring connection cover 130, and a speed measuring gear cavity is formed between the support end plate, the second connection part and the speed measuring connection cover 130 to provide a closed working environment for the speed measuring gear 20.
在本发明公开的一具体的实施例中，第二连接部上设置有两个安装座，且每个安装座上分别设置有一个转速传感器30，两个转速传感器30在第二连接部的安装平面上的夹角为30°，且转速传感器30与第二连接部之间通过O型密封圈密封。第二连接部与测速连接盖130之间通过螺栓进行连接。In a specific embodiment disclosed in the present invention, two mounting seats are provided on the second connection part, and a speed sensor 30 is provided on each mounting seat, the angle between the two speed sensors 30 on the mounting plane of the second connection part is 30°, and the speed sensor 30 and the second connection part are sealed by an O-ring. The second connection part is connected to the speed measuring connection cover 130 by bolts.
为了避免箱体本体110内的润滑油从支撑端板上的支撑孔与测速齿轮输出轴10之间的间隙中过多的流入测速齿轮腔，结合图4和图5，测速齿轮输出轴10与支撑孔之间通过迷宫型密封结构进行密封。In order to prevent the lubricating oil in the box body 110 from flowing excessively into the speed measuring gear cavity from the gap between the supporting hole on the supporting end plate and the speed measuring gear output shaft 10, in combination with Figures 4 and 5, the speed measuring gear output shaft 10 and the supporting hole are sealed by a labyrinth sealing structure.
由于齿轮箱体100内的各个传动部件在作业时需要润滑油的润滑，为了使润滑油能在齿轮箱体100内进行流通，齿轮箱体100内设置有用于引导润滑油流向的结构。结合图6和图7，测速齿轮输出轴10设置有通油槽15，通油槽15位于 齿轮安装部11的连接端板12上，且与输出轴150内孔连通，支撑端板靠近动力输出轴150的一侧设置有用于向通油槽15导油的导油板121。导油板121的一端伸入测速齿轮输出轴10的输出轴配合部13和齿轮安装部11之间，从支撑端板滑落的润滑油流至导油板121之后，可以进一步流入通油槽15，并由通油槽15流入动力输出轴150的输出轴内孔，进而在离心力的作用下润滑位于输出轴内孔的花键153。Since each transmission component in the gear box 100 needs lubrication of lubricating oil during operation, in order to allow the lubricating oil to circulate in the gear box 100, a structure for guiding the flow of lubricating oil is provided in the gear box 100. In conjunction with Figures 6 and 7, the speed measuring gear output shaft 10 is provided with an oil groove 15, which is located on the connecting end plate 12 of the gear mounting portion 11 and is connected to the inner hole of the output shaft 150. An oil guide plate 121 for guiding oil to the oil groove 15 is provided on the side of the support end plate close to the power output shaft 150. One end of the oil guide plate 121 extends between the output shaft matching portion 13 of the speed measuring gear output shaft 10 and the gear mounting portion 11. After the lubricating oil sliding down from the support end plate flows to the oil guide plate 121, it can further flow into the oil groove 15, and then flow into the output shaft inner hole of the power output shaft 150 from the oil groove 15, and then lubricate the spline 153 located in the inner hole of the output shaft under the action of centrifugal force.
为了进一步实现润滑油在齿轮箱体100内的流通，支撑端板开设有回油道122，回油道122的两端分别与测速齿轮腔和箱体本体110连通，当测速齿轮腔内的润滑油积累过多时可以从回油道122流回箱体本体110。In order to further realize the circulation of lubricating oil in the gear box 100, the support end plate is provided with an oil return channel 122, and the two ends of the oil return channel 122 are respectively connected to the speed measuring gear cavity and the box body 110. When too much lubricating oil accumulates in the speed measuring gear cavity, it can flow back to the box body 110 from the oil return channel 122.
结合图3和图4，箱体本体110设置有第一进油道111，第一连接部设置有第二进油道112，第一进油道111和第二进油道112连通。由于在输出齿轮160转动的过程中会将润滑油甩出，通过设置于箱体本体110的积油池可以对飞溅的润滑油进行收集，积油池内的润滑油可在重力的作用下流入第一进油道111并进入第二进油道112。进入第二进油道112的部分润滑油会垂直向下流入设置在支撑端板上的导油板121内，并沿导油板121穿过通油槽15最终流入动力输出轴150的输出轴内孔；部分润滑油会沿支撑端板壁向下流动至圆锥滚子轴承处润滑圆锥滚子轴承并最终流回箱体本体110内；部分润滑油会沿支撑端板上的支撑孔流入测速齿轮腔内，并通过回油道122流回箱体本体110内。In conjunction with FIG. 3 and FIG. 4 , the housing body 110 is provided with a first oil inlet passage 111, and the first connecting portion is provided with a second oil inlet passage 112, and the first oil inlet passage 111 and the second oil inlet passage 112 are connected. Since the lubricating oil will be thrown out during the rotation of the output gear 160, the splashed lubricating oil can be collected by the oil accumulation pool provided in the housing body 110, and the lubricating oil in the oil accumulation pool can flow into the first oil inlet passage 111 and into the second oil inlet passage 112 under the action of gravity. Part of the lubricating oil entering the second oil inlet passage 112 will flow vertically downward into the oil guide plate 121 provided on the support end plate, and pass through the oil groove 15 along the oil guide plate 121 and finally flow into the output shaft inner hole of the power output shaft 150; part of the lubricating oil will flow downward along the support end plate wall to the tapered roller bearing to lubricate the tapered roller bearing and finally flow back into the housing body 110; part of the lubricating oil will flow into the speed measuring gear cavity along the support hole on the support end plate, and flow back into the housing body 110 through the return oil passage 122.
相较于现有技术，本发明实施例公开的齿轮箱测速装置的测速齿轮输出轴10和测速齿轮20均密闭设置于齿轮箱体100内，且齿轮箱的密封和回油结构能够保证在输出齿轮160转动的过程中，润滑油能够充分地润滑转动部件并且保证润滑油密封紧密不外漏，同时能够通过回油结构确保润滑油的充分利用。Compared with the prior art, the speed measuring gear output shaft 10 and the speed measuring gear 20 of the gearbox speed measuring device disclosed in the embodiment of the present invention are both sealed in the gearbox body 100, and the sealing and oil return structure of the gearbox can ensure that during the rotation of the output gear 160, the lubricating oil can fully lubricate the rotating parts and ensure that the lubricating oil is tightly sealed and does not leak, and at the same time, the full utilization of the lubricating oil can be ensured through the oil return structure.
本发明的说明书和权利要求书及上述附图中的术语“第一”和“第二”等是用于区别不同的对象，而不是用于描述特定的顺序。此外术语“包括”和“具有”以及他们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有设定于已列出的步骤或单元，而是可包括没有列出的步骤或单元。The terms "first" and "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在 其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

  1. 一种齿轮箱测速装置，用于检测齿轮箱的动力输出轴(150)的转速，所述动力输出轴(150)上设置有输出齿轮(160)，其特征在于，包括：A gearbox speed measuring device is used to detect the rotation speed of a power output shaft (150) of a gearbox, wherein the power output shaft (150) is provided with an output gear (160), and is characterized by comprising:
    测速齿轮输出轴(10)，用于沿所述动力输出轴(150)的延伸方向传动连接于所述动力输出轴(150)的一端；A speed measuring gear output shaft (10) is used for transmission connection to one end of the power output shaft (150) along the extension direction of the power output shaft (150);
    测速齿轮(20)，传动连接于所述测速齿轮输出轴(10)，且所述测速齿轮(20)的齿数大于所述输出齿轮(160)的齿数；A speed measuring gear (20) is transmission-connected to the speed measuring gear output shaft (10), and the number of teeth of the speed measuring gear (20) is greater than the number of teeth of the output gear (160);
    转速传感器(30)，用于测量所述测速齿轮(20)的转速。The rotation speed sensor (30) is used to measure the rotation speed of the speed measuring gear (20).
  2. 如权利要求1所述的齿轮箱测速装置，其特征在于，所述测速齿轮输出轴(10)包括：The gearbox speed measuring device according to claim 1, characterized in that the speed measuring gear output shaft (10) comprises:
    齿轮安装部(11)，所述齿轮安装部(11)的第一端为连接端板(12)，所述测速齿轮(20)固定套装于所述齿轮安装部(11)的第二端；A gear mounting portion (11), wherein a first end of the gear mounting portion (11) is connected to an end plate (12), and the speed measuring gear (20) is fixedly sleeved on a second end of the gear mounting portion (11);
    输出轴配合部(13)，第一端连接于所述连接端板(12)，第二端向所述测速齿轮(20)的方向延伸，并与所述动力输出轴(150)的端部孔嵌套配合，且所述输出轴配合部(13)与所述齿轮安装部(11)之间具有间隙；An output shaft matching portion (13), the first end of which is connected to the connecting end plate (12), the second end of which extends in the direction of the speed measuring gear (20) and is nested with the end hole of the power output shaft (150), and a gap is provided between the output shaft matching portion (13) and the gear mounting portion (11);
    输出轴连接部(14)，连接于所述输出轴配合部(13)的第二端，用于与所述动力输出轴(150)的端面连接。The output shaft connecting portion (14) is connected to the second end of the output shaft matching portion (13) and is used to be connected to the end surface of the power output shaft (150).
  3. 如权利要求2所述的齿轮箱测速装置，其特征在于，所述输出轴连接部(14)、输出轴配合部(13)与所述齿轮安装部(11)为一体式结构，且所述输出轴连接部(14)通过紧固件安装于所述动力输出轴(150)的端面上。The gearbox speed measuring device according to claim 2 is characterized in that the output shaft connecting portion (14), the output shaft matching portion (13) and the gear mounting portion (11) are an integrated structure, and the output shaft connecting portion (14) is mounted on the end face of the power output shaft (150) by means of fasteners.
  4. 一种齿轮箱，其特征在于，包括：A gear box, characterized by comprising:
    齿轮箱体(100)，所述齿轮箱体(100)内转动设置有动力输出轴(150)；A gear box (100), wherein a power output shaft (150) is rotatably disposed in the gear box (100);
    齿轮箱测速装置，为如权利要求1～3任意一项所述的齿轮箱测速装置，所述测速齿轮输出轴(10)沿所述动力输出轴(150)的延伸方向传动连接于所述动力输出轴(150)的一端，所述转速传感器(30)设置于所述齿轮箱体(100)。A gearbox speed measuring device, which is a gearbox speed measuring device as described in any one of claims 1 to 3, wherein the speed measuring gear output shaft (10) is transmission-connected to one end of the power output shaft (150) along the extension direction of the power output shaft (150), and the speed sensor (30) is arranged on the gearbox body (100).
  5. 如权利要求4所述的齿轮箱，其特征在于，所述转速传感器(30)为霍尔传感器，且为设置于所述齿轮箱体(100)的两个。The gearbox according to claim 4, characterized in that the rotation speed sensor (30) is a Hall sensor, and two of them are arranged on the gearbox body (100).
  6. 如权利要求4所述的齿轮箱，其特征在于，所述齿轮箱体(100)包括：The gearbox according to claim 4, characterized in that the gearbox body (100) comprises:
    箱体本体(110)，所述动力输出轴(150)转动设置于所述箱体本体(110)内；A box body (110), wherein the power output shaft (150) is rotatably disposed in the box body (110);
    输出轴外端盖(120)，设置于所述箱体本体(110)的一侧，所述测速齿轮输出轴(10)穿设于所述输出轴外端盖(120)；An output shaft outer end cover (120) is arranged on one side of the box body (110), and the speed measuring gear output shaft (10) is passed through the output shaft outer end cover (120);
    测速连接盖(130)，设置于所述输出轴外端盖(120)远离所述箱体本体(110)的一侧，且所述测速连接盖(130)与所述输出轴外端盖(120)之间形成测速齿轮腔，所述测速齿轮(20)设置于所述测速齿轮腔内，所述转速传感器(30)设置于所述测速齿轮腔的腔体壁上。The speed measuring connection cover (130) is arranged on a side of the output shaft outer end cover (120) away from the box body (110), and a speed measuring gear cavity is formed between the speed measuring connection cover (130) and the output shaft outer end cover (120), the speed measuring gear (20) is arranged in the speed measuring gear cavity, and the rotation speed sensor (30) is arranged on the cavity wall of the speed measuring gear cavity.
  7. 如权利要求6所述的齿轮箱，其特征在于，所述输出轴外端盖(120)包括：The gearbox according to claim 6, characterized in that the output shaft outer end cover (120) comprises:
    支撑端板，所述支撑端板上开设有供所述测速齿轮输出轴(10)穿过的支撑孔；A supporting end plate, wherein the supporting end plate is provided with a supporting hole for the speed measuring gear output shaft (10) to pass through;
    第一连接部和第二连接部，均设置于所述支撑端板的外侧，且分别向所述支撑端板的两侧延伸，所述第一连接部的一端嵌入所述箱体本体(110)的端部孔内，且所述第一连接部的外侧设置有与所述箱体本体(110)的端面连接的紧固板，所述第二连接部与所述测速连接盖(130)连接，且所述支撑端板、第二连接部与所述测速连接盖(130)之间形成所述测速齿轮腔。The first connection part and the second connection part are both arranged on the outer side of the supporting end plate and extend to both sides of the supporting end plate respectively. One end of the first connection part is embedded in the end hole of the box body (110), and a fastening plate connected to the end surface of the box body (110) is arranged on the outer side of the first connection part. The second connection part is connected to the speed measuring connection cover (130), and the speed measuring gear cavity is formed between the supporting end plate, the second connection part and the speed measuring connection cover (130).
  8. 如权利要求7所述的齿轮箱，其特征在于，所述测速齿轮输出轴(10)与所述支撑孔之间通过迷宫型密封结构进行密封。The gear box according to claim 7, characterized in that the speed measuring gear output shaft (10) and the supporting hole are sealed by a labyrinth sealing structure.
  9. 如权利要求7所述的齿轮箱，其特征在于，所述测速齿轮输出轴(10)设置有通油槽(15)，所述支撑端板靠近所述动力输出轴(150)的一侧设置有用于向所述通油槽(15)内导油的导油板(121)。The gearbox according to claim 7 is characterized in that the speed measuring gear output shaft (10) is provided with an oil groove (15), and an oil guide plate (121) for guiding oil into the oil groove (15) is provided on the side of the support end plate close to the power output shaft (150).
  10. 如权利要求7所述的齿轮箱，其特征在于，所述支撑端板开设有回油道(122)，所述回油道(122)的两端分别与所述测速齿轮腔和所述箱体本体(110)连通；The gear box according to claim 7, characterized in that the supporting end plate is provided with an oil return passage (122), and both ends of the oil return passage (122) are respectively connected to the speed measuring gear cavity and the box body (110);
    所述箱体本体(110)设置有第一进油道(111)，所述第一连接部设置有第二进油道(112)，所述第一进油道(111)和所述第二进油道(112)连通。The box body (110) is provided with a first oil inlet passage (111), the first connecting portion is provided with a second oil inlet passage (112), and the first oil inlet passage (111) and the second oil inlet passage (112) are in communication.
PCT/CN2022/135411 2022-11-25 2022-11-30 Gearbox speed measuring device and gearbox WO2024108629A1 (en)

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CN113551026A (en) * 2021-07-14 2021-10-26 中车青岛四方机车车辆股份有限公司 Gear box, bogie and rail vehicle
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CN200958552Y (en) * 2006-07-31 2007-10-10 中国南车集团株洲电力机车研究所 Single-stage gear speed reducer with inputting-outputting rotation-speed inspector
CN205220846U (en) * 2015-12-24 2016-05-11 山东鲁班机械科技有限公司 Automatic data signal sensing device of control crawler machinery
CN205608017U (en) * 2016-05-03 2016-09-28 徐州徐工筑路机械有限公司 Simple and easy speed of a motor vehicle detecting system
CN111929462A (en) * 2020-08-21 2020-11-13 南京高精齿轮集团有限公司 Gear box speed measuring device and gear box
JP2022087938A (en) * 2020-12-02 2022-06-14 東洋電機製造株式会社 Gear unit for railway vehicle
CN113551026A (en) * 2021-07-14 2021-10-26 中车青岛四方机车车辆股份有限公司 Gear box, bogie and rail vehicle
CN217603313U (en) * 2022-07-21 2022-10-18 重庆凯瑞传动技术有限公司 Straddle type monorail speed measurement gearbox

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