CN110657211A - Transmission compact reduction gearbox for spiral pipe jacking machine - Google Patents

Transmission compact reduction gearbox for spiral pipe jacking machine Download PDF

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Publication number
CN110657211A
CN110657211A CN201911017836.1A CN201911017836A CN110657211A CN 110657211 A CN110657211 A CN 110657211A CN 201911017836 A CN201911017836 A CN 201911017836A CN 110657211 A CN110657211 A CN 110657211A
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CN
China
Prior art keywords
shaft
reduction gearbox
sprocket
driving
hollow
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Granted
Application number
CN201911017836.1A
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Chinese (zh)
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CN110657211B (en
Inventor
徐万鑫
杜海
迟振刚
李景恒
刘丛
李贵机
于会春
冯一宸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PowerChina Changchun Generating Equipment Group Ltd
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PowerChina Changchun Generating Equipment Group Ltd
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Publication date
Application filed by PowerChina Changchun Generating Equipment Group Ltd filed Critical PowerChina Changchun Generating Equipment Group Ltd
Priority to CN201911017836.1A priority Critical patent/CN110657211B/en
Publication of CN110657211A publication Critical patent/CN110657211A/en
Application granted granted Critical
Publication of CN110657211B publication Critical patent/CN110657211B/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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • 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
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • 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
    • F16H57/035—Gearboxes for gearing with endless flexible members
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0876—Control or adjustment of actuators
    • F16H2007/088—Manual adjustment
    • 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
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02069—Gearboxes for particular applications for industrial applications
    • 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
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing

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

Abstract

The invention provides a transmission compact reduction gearbox for a spiral pipe jacking machine, which comprises: the invention discloses a reduction gearbox box, a driving sprocket shaft, a hollow sprocket shaft, a driving solid sprocket, a driven sprocket and a roller chain, wherein two ends of the driving sprocket shaft are arranged on two side cover plates of the reduction gearbox box through bearings, at least one group of driving solid sprockets are integrally formed on the circumference of the driving sprocket shaft, steel sleeves are arranged at corresponding positions on the two side cover plates of the reduction gearbox box, two ends of the hollow sprocket shaft are assembled on the steel sleeves through the bearings, the hollow sprocket shaft is sleeved with the driven sprocket corresponding to the driving solid sprocket, a central hole of the driven sprocket is sleeved on the driven hollow sprocket shaft and connected to the hollow sprocket shaft through a flat key to transmit torque, and the invention has the advantages that: compared with planetary gear transmission, the chain transmission mode has the advantages of simple structure, easy processing, low assembly precision, low requirement on lubricating quality, simple and convenient maintenance, cost saving and good economical efficiency.

Description

Transmission compact reduction gearbox for spiral pipe jacking machine
Technical Field
The invention relates to the technical field of municipal construction equipment, in particular to a transmission compact reduction gearbox for a spiral pipe jacking machine.
Background
With the continuous improvement of the urbanization level of China, the discharge capacity of the rain and sewage drainage pipeline in the original urban area is tested, and some cities have the phenomenon of 'seeing the sea' in rainy season, so the rain and sewage drainage pipeline as one of urban hardware must be rebuilt or modified. The spiral pipe jacking machine is special construction equipment suitable for urban low traffic influence, and overcomes the defects that the construction period is long, the damage to roads is serious, a large amount of repeated construction is generated and the like in the traditional construction mode of excavating and laying pipes. In order to adapt to the working characteristics that the urban municipal construction operation space is limited and frequent transition transportation is required, the main structure and the transmission system design must meet the requirements of compact structure, small space occupation, sufficient strength, impact resistance and the like. But the existing transmission system of the spiral pipe pushing jack adopts a transmission mode that a hydraulic motor is provided with a planetary gear reduction box. The operation space in the well requires that the input shaft and the output shaft of the hydraulic motor of the reduction gearbox need to be arranged along the vertical direction, the horizontal width direction is strictly limited, and the too wide part is not beneficial to an operator to replace the tool and shorten the jacking stroke. The planetary gear transmission needs to be arranged in the horizontal width direction on the premise of meeting the transmission ratio and the center distance of two shafts in the vertical direction. Therefore, the planetary gear transmission can be arranged in the width space of the reduction gearbox of the large and medium spiral pipe jacking machine suitable for construction with the pipe diameter of more than DN500, but the planetary gear transmission is suitable for the small spiral pipe jacking machine with the pipe diameter of less than DN500, the space of a working well is very narrow, and the width direction of the reduction gearbox is severely limited on the premise of meeting the transmission ratio of the reduction gearbox and the distance between an input shaft and an output shaft. The use of planetary gear transmissions has not been possible. Therefore, a novel compact reduction gearbox must be developed to meet the use requirement of the small-caliber spiral pipe jacking machine.
Disclosure of Invention
In view of the above problems, the present invention provides a compact transmission reduction gearbox for a spiral pipe pushing jack, which is used for transmitting the power of a hydraulic motor to an actuating element in a limited space on the premise of satisfying the transmission ratio and the center distance between an input shaft and an output shaft, so as to overcome the defects of the prior art.
The invention provides a transmission compact reduction gearbox for a spiral pipe jacking machine, which comprises: the two ends of the driving sprocket shaft are arranged on two side cover plates of the reduction gearbox body through bearings, an outward extending shaft of the driving sprocket shaft extending out of the bearings is assembled with an inner shaft hole of a hydraulic motor, at least one group of driving solid sprockets are integrally formed on the circumference of the driving sprocket shaft, steel sleeves assembled with the driving solid sprockets are arranged at corresponding positions on the two side cover plates of the reduction gearbox body, two ends of the hollow sprocket shaft are assembled on the steel sleeves through the bearings, a driven sprocket corresponding to the driving solid sprocket is sleeved on the hollow sprocket shaft, the driven sprocket is sleeved on the driven hollow sprocket shaft through a center hole and connected on the hollow sprocket shaft through a flat key to transmit torque, the roller chain is sleeved on the driving solid sprocket and the driven sprocket, and a positioning end cover is arranged at the position, located on the steel sleeves, of the side wall of the reduction gearbox body, a framework sealing ring and a sealing ring baffle plate for positioning the framework sealing ring are assembled between the central hole of the positioning end cover and the driven hollow chain wheel shaft, and a chain tensioner for adjusting the tension of the roller chain is installed in the reduction gearbox box body.
Preferably, an outer flange is arranged on a cover plate of the reduction gearbox body, a positioning bolt group on the outer circumference of the shell of the hydraulic motor is connected on the outer flange through bolts, and an outer extension shaft extends out of the outer flange and is connected with the output end of the hydraulic motor.
Preferably, the bearings on two sides of the driving sprocket shaft are respectively a tapered roller bearing and a drum-shaped roller bearing, an outer ring of the tapered roller bearing is arranged in a central hole of the outer flange, an inner ring of the tapered roller bearing is assembled at a shaft shoulder at one end of the driving sprocket shaft, an inner ring of the drum-shaped roller bearing is assembled at a shaft shoulder at the other end of the driving sprocket shaft, an outer ring of the drum-shaped roller bearing is fixedly connected in an installation positioning hole on a cover plate of the reduction gearbox box body, and an end cover for dust prevention and sealing is arranged at the position, corresponding to the installation positioning hole, at the outer end of the.
Preferably, the bearings at the two ends of the hollow chain wheel shaft are tapered roller bearings, and the two tapered roller bearings are respectively sleeved at the shaft shoulder of the hollow chain wheel shaft.
Preferably, the chain tensioner comprises: the gear supporting frame is arranged in a reduction box body between the driving chain wheel shaft and the hollow chain wheel shaft, the gear ejecting bolt is in threaded connection with the gear supporting frame, one end of the gear ejecting bolt is provided with a rotating handle, the other end of the gear ejecting bolt is fixedly connected with the ejecting follow-up gear, and teeth of the ejecting follow-up gear are ejected on an inner ring of the roller chain.
Preferably, the cover plate of the box body is also provided with an observation hole, and the observation hole is closed by the cover plate when not used at ordinary times.
Preferably, the reduction gearbox body is a rectangular steel plate type box body formed by welding.
The invention has the advantages and positive effects that:
1. the invention realizes the power transmission requirement of a small spiral pipe jacking machine suitable for small-diameter construction, and transmits the power of a hydraulic motor to an execution element in a limited space on the premise of meeting the transmission ratio and the distance between an input shaft and an output shaft, so that the construction of the small-diameter trenchless pipe jacking of the spiral pipe jacking machine becomes possible.
2. The compact reduction gearbox main body adopts a chain transmission mode, and compared with planetary gear transmission, the compact reduction gearbox main body adopts the chain transmission mode, and has the advantages of simple structure, easiness in processing, low assembly precision, low requirement on lubricating quality, simplicity and convenience in maintenance, cost saving and good economical efficiency.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a front view of the overall structure according to an embodiment of the present invention.
Fig. 2 is a side cross-sectional view of an overall structure according to an embodiment of the invention.
FIG. 3 is a schematic structural view of a chain tensioner according to an embodiment of the present invention.
Fig. 4 is a rear view of the overall structure according to an embodiment of the present invention.
Wherein the reference numerals include: the device comprises a reduction gearbox body 1, a cover plate 1-1, a driving chain wheel shaft 2, a hollow chain wheel shaft 3, a driven chain wheel 4, a driving solid chain wheel 5, a roller chain 6, an outer flange 7, a first tapered roller bearing 8, a drum-shaped roller bearing 9, an end cover 10, a second tapered roller bearing 11, a steel sleeve 12, a positioning end cover 13, a framework sealing ring 14, a sealing ring baffle 15, a chain tensioner 16, a jacking follow-up gear 16-1, a gear support frame 16-2 and a gear ejection bolt 16-3.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
Fig. 1-4 show an overall structural schematic according to an embodiment of the present invention.
The invention relates to a transmission compact reduction box for a spiral pipe jacking machine, which comprises: the transmission device comprises a reduction box body 1, a driving sprocket shaft 2 assembled in an upper mounting hole of the reduction box body 1 through a bearing support, a hollow sprocket shaft 3 assembled in a lower mounting hole of the reduction box body 1 through a bearing support, a driven sprocket 4 assembled on the hollow sprocket shaft 3 through a flat key connection, a row of three driving solid sprockets 5 integrally formed on the circumference of the driving sprocket shaft 2, and transmission is carried out between the driving solid sprockets 5 and the driven sprocket 4 through three rows of roller chains 6.
Referring to fig. 2, the hydraulic motor in this embodiment is fixedly connected to an outer flange 7 welded to a cover plate of a reduction gearbox housing 1 through a housing outer circumference positioning bolt group, an outer ring of a first tapered roller bearing 8 is installed in a central hole of the outer flange 7, an inner ring is assembled at a shaft shoulder of a drive sprocket shaft 2, and the drive sprocket shaft 2 extends out of an extending shaft of the tapered roller bearing 8 and is assembled with an inner shaft hole of the hydraulic motor; the other end of the driving chain wheel shaft 2 is assembled and fixed with the other cover plate of the reduction box body 1 through a drum-shaped roller bearing 9, and the outer end of the cover plate is dustproof through an end cover 10. Three rows of driving solid chain wheels 5 are processed on the middle shaft surface of the driving chain wheel shaft 2, the driving chain wheel shaft 2 is linked with the driven chain wheels 4 through three rows of roller chains 7, the three rows of driven chain wheels 4 are connected in a shaft sleeve mode, the driven chain wheels 4 are assembled on the hollow chain wheel shaft 3 through center holes, and the driving solid chain wheels and the hollow chain wheel shaft are located circumferentially through flat keys and transmit torque. Two sides of the hollow chain wheel shaft 3 are assembled on a steel sleeve 12 through two second tapered roller bearings 11, and the steel sleeve 12 is assembled on two cover plates of the reduction box body 1. The positioning end cover 12 of the second tapered roller bearing 11 is fixed on the steel sleeve 12 through a bolt group. A skeleton sealing ring 14 and a sealing ring baffle 15 are arranged between the central hole of the positioning end cover 13 and the hollow chain wheel shaft 3.
Referring to fig. 3, a chain tensioner 16 is installed at a proper position of a closed area surrounded by the roller chain 6 and the driving sprocket shaft 2 and the driven sprocket 4 in the present embodiment, and the roller chain 6 can be tensioned by the chain tensioner 16. The chain tensioner 6 includes: the jacking follow-up gear 16-1, the gear support frame 16-2 and the gear ejection bolt 16-3 are arranged in the reduction gearbox body 1 between the driving chain wheel shaft 2 and the hollow chain wheel shaft 3, the gear ejection bolt 16-3 is in threaded connection with the gear support frame 16-2, one end of the gear ejection bolt 16-3 is provided with a rotating handle, the other end of the gear ejection bolt 16-3 is fixedly connected with the jacking follow-up gear 16-1, and teeth of the jacking follow-up gear 16-1 are tightly jacked on an inner ring of the roller chain 6.
Referring to fig. 1 and 4, the reduction gearbox body 1 in the embodiment is a rectangular steel plate type body formed by welding, an observation hole is further formed in a cover plate of the reduction gearbox body 1, and the cover plate 1-1 is adopted to seal when the reduction gearbox is not used at ordinary times.
The working principle of the invention is as follows: through three rows of initiative solid sprocket of processing at 2 middle part axial planes of initiative sprocket shaft (because the reference circle diameter size of initiative solid sprocket 5 is less, if the sprocket makes assembled root circle and centre bore interval undersize, intensity can't satisfy the requirement, if adopt solid integrated into one piece's processing method can solve above-mentioned problem), realize linking with driven sprocket 4 on the hollow sprocket shaft 3 through roller chain 6, thereby realize the small-size spiral pipe jacking machine power transmission demand that is fit for the construction of little pipe diameter, under the prerequisite that satisfies drive ratio and input and output shaft interval, give executive component with hydraulic motor's power transmission in limited space, make the non-excavation pipe jacking of little pipe of spiral pipe jacking machine construction pipe of little pipe diameter become possible.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The utility model provides a spiral pipe pushing jack is with transmission compact reducing gear box which characterized in that includes: the two ends of the driving sprocket shaft are arranged on two side cover plates of the reduction box body through bearings, an outward extending shaft of the driving sprocket shaft extending out of the bearings is assembled with an inner shaft hole of a hydraulic motor, at least one group of driving solid sprockets are integrally formed on the circumference of the driving sprocket shaft, steel sleeves assembled with the driving solid sprockets are arranged at corresponding positions on the two side cover plates of the reduction box body, two ends of the hollow sprocket shaft are assembled on the steel sleeves through bearings, a driven sprocket corresponding to the driving solid sprocket is sleeved on the hollow sprocket shaft through a center hole, the driven sprocket is sleeved on the hollow sprocket shaft through a flat key and is connected on the hollow sprocket shaft through a flat key to transmit torque, and the chain is sleeved on the driving solid sprocket and the driven sprocket, a positioning end cover is arranged on the side wall of the reduction gearbox body and located at the position of the steel sleeve, a framework sealing ring and a sealing ring baffle plate used for positioning the framework sealing ring are assembled between a center hole of the positioning end cover and the driven hollow chain wheel shaft, and a chain tensioner used for adjusting the tensioning of the roller chain is installed in the reduction gearbox body.
2. The transmission compact reduction gearbox for spiral pipe pushing jack of claim 1, wherein an outer flange is arranged on a cover plate of a box body of the reduction gearbox, a positioning bolt group on the outer circumference of a shell of the hydraulic motor is connected on the outer flange through bolts, and the outer extension shaft extends out of the outer flange and is connected with the output end of the hydraulic motor.
3. The transmission compact reduction gearbox for the spiral pipe pushing jack according to claim 1, wherein the bearings at two sides of the driving sprocket shaft are respectively a tapered roller bearing and a drum roller bearing, the outer ring of the tapered roller bearing is installed in the central hole of the outer flange, the inner ring of the tapered roller bearing is assembled at the shaft shoulder at one end of the driving sprocket shaft, the inner ring of the drum roller bearing is assembled at the shaft shoulder at the other end of the driving sprocket shaft, the outer ring of the drum roller bearing is fixedly connected in the installation positioning hole on the cover plate of the reduction gearbox body, and an end cover for dust prevention and sealing is arranged at the outer end of the cover plate corresponding to the installation positioning hole.
4. The transmission compact reduction gearbox for the spiral pipe pushing jack according to claim 1, wherein bearings at two ends of the hollow chain wheel shaft are tapered roller bearings, and the two tapered roller bearings are respectively sleeved at a shaft shoulder of the hollow chain wheel shaft.
5. The transmission compact reduction gearbox for spiral pipe push bench according to claim 1, characterized in that the chain tensioner comprises: the gear supporting frame is arranged in a reduction box body between the driving chain wheel shaft and the hollow chain wheel shaft, the gear ejection bolt is in threaded connection with the gear supporting frame, one end of the gear ejection bolt is provided with a rotating handle, the other end of the gear ejection bolt is fixedly connected with the ejection follow-up gear, and teeth of the ejection follow-up gear are tightly ejected on an inner ring of the roller chain.
6. The transmission compact reduction gearbox for spiral pipe push bench according to claim 1, characterized in that the cover plate of the reduction gearbox body is further provided with an observation hole, and the observation hole is closed by the cover plate when not in use at ordinary times.
7. The transmission compact reduction gearbox for the spiral pipe pushing jack according to claim 1, wherein the reduction gearbox body is a rectangular steel plate type box body formed by welding.
CN201911017836.1A 2019-10-24 2019-10-24 Transmission compact type reduction gearbox for spiral pipe pushing jack Active CN110657211B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911017836.1A CN110657211B (en) 2019-10-24 2019-10-24 Transmission compact type reduction gearbox for spiral pipe pushing jack

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Application Number Priority Date Filing Date Title
CN201911017836.1A CN110657211B (en) 2019-10-24 2019-10-24 Transmission compact type reduction gearbox for spiral pipe pushing jack

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CN110657211A true CN110657211A (en) 2020-01-07
CN110657211B CN110657211B (en) 2024-08-27

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1447042A (en) * 2002-03-22 2003-10-08 住友重机械工业株式会社 Reducer for geared driving motor, geared driving motor and products series thereof
CN105805235A (en) * 2014-12-29 2016-07-27 北京南口轨道交通机械有限责任公司 Gear speed reducer and hoisting device
CN107624275A (en) * 2017-10-23 2018-01-26 湖南龙舟农机股份有限公司 A kind of rotating gearbox and rotating rotary cultivator
CN107725683A (en) * 2017-09-30 2018-02-23 广东星光传动股份有限公司 A kind of reducing motor
CN211449536U (en) * 2019-10-24 2020-09-08 中国电建集团长春发电设备有限公司 Transmission compact reduction gearbox for spiral pipe jacking machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1447042A (en) * 2002-03-22 2003-10-08 住友重机械工业株式会社 Reducer for geared driving motor, geared driving motor and products series thereof
CN105805235A (en) * 2014-12-29 2016-07-27 北京南口轨道交通机械有限责任公司 Gear speed reducer and hoisting device
CN107725683A (en) * 2017-09-30 2018-02-23 广东星光传动股份有限公司 A kind of reducing motor
CN107624275A (en) * 2017-10-23 2018-01-26 湖南龙舟农机股份有限公司 A kind of rotating gearbox and rotating rotary cultivator
CN211449536U (en) * 2019-10-24 2020-09-08 中国电建集团长春发电设备有限公司 Transmission compact reduction gearbox for spiral pipe jacking machine

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