CN112627260A - Mining excavator pushing device and mining excavator - Google Patents
Mining excavator pushing device and mining excavator Download PDFInfo
- Publication number
- CN112627260A CN112627260A CN202011517562.5A CN202011517562A CN112627260A CN 112627260 A CN112627260 A CN 112627260A CN 202011517562 A CN202011517562 A CN 202011517562A CN 112627260 A CN112627260 A CN 112627260A
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- China
- Prior art keywords
- pushing
- mining excavator
- chain
- mining
- chain wheel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/48—Drag-lines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/52—Cableway excavators
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/58—Component parts
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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
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a mining excavator pushing device and a mining excavator. The pressing device includes: the device comprises a coaxial speed reducing motor, a first chain wheel, a chain, a second chain wheel, a pushing shaft and a pushing gear; the coaxial type speed reducing motor is fixedly installed on the mining excavator, the first chain wheel is installed at the output end of the coaxial type speed reducing motor and is in transmission connection with the second chain wheel through a chain, the second chain wheel is installed on a pushing shaft, the pushing shaft is installed on a crane boom of the mining excavator, a pushing gear is installed on the pushing shaft, and the pushing gear is meshed with a rack on a bucket rod of the mining excavator. According to the mining excavator pushing device and the mining excavator, the coaxial speed reducing motor is arranged, so that the structure can be simplified, and the occupied space is reduced; meanwhile, the chain transmission mode is adopted, so that the buffer and vibration reduction device has higher buffer and vibration reduction performance and transmission efficiency, accurate average transmission ratio, more compact structure size, small occupied space and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of mining excavators, in particular to a pushing device of a mining excavator and the mining excavator.
Background
A mechanical face shovel excavator, also called a mining excavator, is a special device for mining open-pit mines, and the existing mining excavator mainly comprises a rotary platform, an a-shaped frame, a crane boom, a bucket rod, a bucket, a pushing device, a lifting device, a guy rope, a lifting steel wire rope and the like.
Chinese patent document No. CN109706990A entitled "mining excavator working mechanism and mining excavator" specifically discloses a mining excavator pushing mechanism and mining excavator, and the mining excavator pushing mechanism includes: the mining excavator comprises a pushing speed reducer, a pushing shaft, a pushing gear, a pushing motor, a belt and the like, wherein the pushing motor drives the belt pulley when pushing, pushing force is transmitted to the speed reducer through the belt, the speed reducer is transmitted to the pushing shaft through the gear, and finally the pushing gear on the pushing shaft drives a rack on a bucket rod to enable the bucket rod to make telescopic motion, so that the pushing action of the excavator is completed. The above-described pushing mechanism is generally used for a large-sized mining excavator, and for a small-sized mining excavator, the above-described pushing mechanism is excessively complicated, and the small-sized mining excavator has a limited space, and is not suitable for mounting a belt transmission.
Disclosure of Invention
In order to solve part or all of technical problems in the prior art, the invention provides a pushing device of a mining excavator and the mining excavator.
In a first aspect, the invention discloses a pushing device for a mining excavator, comprising: the device comprises a coaxial speed reducing motor, a first chain wheel, a chain, a second chain wheel, a pushing shaft and a pushing gear;
the mining excavator comprises a mining excavator body, a coaxial type speed reduction motor, a first chain wheel, a second chain wheel, a pushing shaft, a pushing gear and a pushing gear, wherein the coaxial type speed reduction motor is fixedly installed on the mining excavator body, the first chain wheel is installed at the output end of the coaxial type speed reduction motor and is in transmission connection with the second chain wheel through a chain, the second chain wheel is installed on the pushing shaft, the pushing shaft is installed on a crane boom of the mining excavator body, the pushing gear is installed on the pushing shaft, and the pushing gear is meshed with a rack on a bucket.
In some alternative embodiments, the number of teeth of the first sprocket is less than the number of teeth of the second sprocket.
In some alternative embodiments, the coaxial gear motor is mounted on a swing platform of the mining excavator or on the boom.
In some alternative embodiments, the second sprocket is mounted intermediate the thrust shafts.
In some alternative embodiments, the pushing gear includes two, and two pushing gears are installed at both sides of the pushing shaft.
In some alternative embodiments, the chain is a single row chain, a double row chain, or a multiple row chain.
In a second aspect, the invention further discloses a mining excavator, and the mining excavator comprises the mining excavator pushing and pressing device.
In some optional embodiments, the boom is provided with a rectangular hole, and one end of the chain is mounted on the first chain wheel, and the other end of the chain is mounted on the second chain wheel through the rectangular hole.
In some optional embodiments, one end of the guy rope of the mining excavator is connected with the crane arm, and the other end of the guy rope of the mining excavator is connected with the A-shaped frame of the mining excavator through a pull rod type tension sensor.
In some alternative embodiments, the guy wire is connected to the pull rod type tension sensor in a hinged manner.
The technical scheme of the invention has the following main advantages:
according to the pushing device of the mining excavator and the mining excavator, the coaxial speed reducing motor is arranged, so that two shafts of a pushing speed reducer of the original pushing device can be omitted, the structure can be simplified, and the occupied space can be reduced; meanwhile, the transmission mode is set to be chain transmission, compared with friction type belt transmission, the chain has small tension to a shaft, higher buffering and vibration reduction performance and transmission efficiency are achieved, the average transmission ratio is accurate, and under the same use condition, the chain transmission structure is more compact in size, small in occupied space and convenient to maintain.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a mining excavator according to an embodiment of the present invention;
FIG. 2 is an assembled view of the push shaft according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a coaxial reduction motor according to an embodiment of the present invention;
FIG. 4 is a top view block diagram of a lift arm according to one embodiment of the present invention;
fig. 5 is a schematic structural diagram of a pull rod type tension sensor according to an embodiment of the invention.
Description of reference numerals:
the device comprises a 1-coaxial speed reducing motor, a 2-first chain wheel, a 3-chain, a 4-second chain wheel, a 5-pushing shaft, a 6-pushing gear, a 7-crane boom, a 71-rectangular hole, a 8-bucket rod, a 9-rack, a 10-rotary platform, a 11-saddle, a 12-guy rope, a 13-pull rod type tension sensor, a 14-A type frame, a 15-bucket, a 16-lifting mechanism, a 17-lifting steel wire rope and a 18-pulley.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3, an embodiment of the present invention provides a mining excavator pushing apparatus applied to a mining excavator, the pushing apparatus including: the device comprises a coaxial speed reducing motor, a first chain wheel, a chain, a second chain wheel, a pushing shaft and a pushing gear; the coaxial type speed reducing motor is fixedly installed on the mining excavator, the first chain wheel is installed at the output end of the coaxial type speed reducing motor and is in transmission connection with the second chain wheel through a chain, the second chain wheel is installed on a pushing shaft, the pushing shaft is installed on a crane boom of the mining excavator, a pushing gear is installed on the pushing shaft, and the pushing gear is meshed with a rack on a bucket rod of the mining excavator.
Specifically, when the pushing and pressing device of the mining excavator performs pushing and pressing actions, the coaxial speed reduction motor drives the first chain wheel to rotate, the first chain wheel drives the second chain wheel to rotate through the chain, the second chain wheel rotates to synchronously drive the pushing and pressing shaft and the pushing and pressing gear on the pushing and pressing shaft to rotate, and the pushing and pressing gear drives the rack to drive the bucket rod to perform telescopic motion.
Therefore, the pushing device of the mining excavator provided by the embodiment of the invention can be used for eliminating two shafts of the pushing speed reducer of the original pushing device by arranging the coaxial speed reducing motor, so that the structure can be simplified, and the occupied space can be reduced; meanwhile, the transmission mode is set to be chain transmission, compared with friction type belt transmission, the chain has small tension to a shaft, higher buffering and vibration reduction performance and transmission efficiency are achieved, the average transmission ratio is accurate, and under the same use condition, the chain transmission structure is more compact in size, small in occupied space and convenient to maintain.
Optionally, in an embodiment of the present invention, the number of teeth of the first sprocket is smaller than the number of teeth of the second sprocket, so as to perform a speed reduction function. Therefore, the transmission stability can be improved, and the coaxial speed reducing motor can be conveniently selected.
Further, in an embodiment of the present invention, an installation position of the coaxial reduction motor may be adjusted according to an actual situation, so as to ensure that the coaxial reduction motor does not interfere with other components of the mining excavator.
Optionally, the coaxial speed reduction motor may be mounted on a revolving platform or a boom of the mining excavator.
Referring to fig. 2, in order to ensure the stability and reliability of the operation of the pressing device, in an embodiment of the present invention, the second sprocket may be installed in the middle of the pressing shaft.
Further, in an embodiment of the present invention, the pushing gear may include two pushing gears, and the two pushing gears are installed at both sides of the pushing shaft. Correspondingly, the number of the racks arranged on the bucket rod can be two, and the two pushing gears are meshed with the two racks.
Referring to fig. 2, in an embodiment of the present invention, saddles may be respectively installed on the pushing shafts outside the two pushing gears, and the two saddles are respectively matched with the bucket rod to limit the axial movement of the bucket rod.
Optionally, in an embodiment of the present invention, the chain may be a single-row chain, a double-row chain, or a multi-row chain.
In a second aspect, an embodiment of the present invention further provides a mining excavator, which includes the mining excavator thrust device described above.
Further, referring to fig. 1, in an embodiment of the present invention, the mining excavator may further include a revolving platform, an a-frame, a boom, a guy rope, a dipper, a hoisting mechanism, and a hoisting cable, where the a-frame is fixed on the revolving platform, a root of the boom is hinged to a front end of the revolving platform, the boom is obliquely installed on the revolving platform, the guy rope connects a head of the boom with the a-frame, the dipper is connected with the pushing device, the dipper is installed at a head of the dipper, the head of the boom is provided with a pulley, and one end of the hoisting cable crosses over the pulley to connect the dipper, and the other end of the hoisting.
Further, referring to fig. 1 and 4, in an embodiment of the present invention, in order to facilitate installation of the chain, a rectangular hole is formed in the boom, one end of the chain is installed on the first chain wheel, and the other end of the chain is installed on the second chain wheel through the rectangular hole.
Further, referring to fig. 1 and 5, in an embodiment of the present invention, one end of the guy rope is connected to the boom, and the other end of the guy rope may be connected to the a-frame by a pull rod type tension sensor.
Specifically, by arranging the pull rod type tension sensor, the tension between the guy rope and the A-shaped frame can be monitored in real time, when the crane boom is about to be jacked up, the tension borne by the tension sensor is reduced, when the tension detected by the tension sensor is smaller than a given limited torque value, the tension sensor triggers an alarm and transmits the alarm to a mining excavator control system, and the control system controls the output torque of the coaxial speed reduction motor, so that the crane boom is ensured not to be jacked up.
Optionally, the guy rope is connected with the pull rod type tension sensor in a hinged manner.
The guy rope and the pull rod type tension sensor are connected in a hinged mode, so that the crane boom can be allowed to be jacked to a certain angle, but the angle can be limited in a small range, and the chain cannot fall off due to too loose when the crane boom is jacked.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A mining excavator pushing device, characterized in that the pushing device comprises: the device comprises a coaxial speed reducing motor, a first chain wheel, a chain, a second chain wheel, a pushing shaft and a pushing gear;
the mining excavator comprises a mining excavator body, a coaxial type speed reduction motor, a first chain wheel, a second chain wheel, a pushing shaft, a pushing gear and a pushing gear, wherein the coaxial type speed reduction motor is fixedly installed on the mining excavator body, the first chain wheel is installed at the output end of the coaxial type speed reduction motor and is in transmission connection with the second chain wheel through a chain, the second chain wheel is installed on the pushing shaft, the pushing shaft is installed on a crane boom of the mining excavator body, the pushing gear is installed on the pushing shaft, and the pushing gear is meshed with a rack on a bucket.
2. The mining excavator thrust pressure device of claim 1, wherein the number of teeth of the first sprocket is less than the number of teeth of the second sprocket.
3. The mining excavator thrust device of claim 1, wherein the coaxial reduction motor is mounted on a swing platform or the boom of the mining excavator.
4. The mining excavator thrust apparatus of claim 1 wherein said second sprocket is mounted intermediate said thrust shaft.
5. The mining excavator thrust device of claim 4, wherein the thrust gear includes two, and two of the thrust gears are mounted on both sides of the thrust shaft.
6. The mining excavator thrust device of claim 1 wherein the chain is a single row chain, a double row chain or a multiple row chain.
7. A mining excavator, comprising a mining excavator thrust device as claimed in any one of claims 1 to 6.
8. The mining shovel of claim 7, wherein the boom defines a slot, and the chain is mounted at one end to the first sprocket and at the other end to the second sprocket through the slot.
9. The mining excavator of claim 7, wherein the guy rope of the mining excavator is connected to the boom at one end and to the a-frame of the mining excavator at the other end by a pull rod type tension sensor.
10. The mining shovel of claim 9, wherein the guy rope is hingedly connected to the drawbar type tension sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517562.5A CN112627260B (en) | 2020-12-21 | 2020-12-21 | Mining excavator pushing device and mining excavator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517562.5A CN112627260B (en) | 2020-12-21 | 2020-12-21 | Mining excavator pushing device and mining excavator |
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| Publication Number | Publication Date |
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| CN112627260A true CN112627260A (en) | 2021-04-09 |
| CN112627260B CN112627260B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011517562.5A Active CN112627260B (en) | 2020-12-21 | 2020-12-21 | Mining excavator pushing device and mining excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183420A (en) * | 2021-11-11 | 2022-03-15 | 太原重工股份有限公司 | Synchronous jacking system for overhaul of excavator and synchronous jacking method for upper mechanism of excavator |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191202233A (en) * | 1911-01-28 | 1912-06-27 | Peter Mayer | Improvements in Mounting and Operating Dredge Buckets. |
| GB9511225D0 (en) * | 1994-09-06 | 1995-07-26 | Harnischfeger Corp | Apparatus and method for mounting a machine component on a support structure |
| US6185847B1 (en) * | 1997-09-17 | 2001-02-13 | R. A. Hanson Company, Inc. | Continuous shovel |
| CN2804183Y (en) * | 2004-12-23 | 2006-08-09 | 湖南三弘重科机械制造有限公司 | Shearleg tightrope fixer of excavator |
| CN201087431Y (en) * | 2007-08-08 | 2008-07-16 | 淄博大力矿山机械有限公司 | Chain pilot wheel device of electric rock loader |
| CN104480990A (en) * | 2011-04-29 | 2015-04-01 | 哈尼施费格尔技术公司 | Controlling a digging operation of an industrial machine |
| CN107447803A (en) * | 2017-08-15 | 2017-12-08 | 太原理工大学 | The mechanical mining excavator of combination drive |
| CN109706990A (en) * | 2018-12-27 | 2019-05-03 | 太原重工股份有限公司 | Mine excavator operating mechanism and mine excavator |
| CN209620154U (en) * | 2019-01-29 | 2019-11-12 | 北京大圣格尔冶金设备有限公司 | A kind of hollow shaft motor direct-drive type dipper crowding gear and large excavator |
-
2020
- 2020-12-21 CN CN202011517562.5A patent/CN112627260B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191202233A (en) * | 1911-01-28 | 1912-06-27 | Peter Mayer | Improvements in Mounting and Operating Dredge Buckets. |
| GB9511225D0 (en) * | 1994-09-06 | 1995-07-26 | Harnischfeger Corp | Apparatus and method for mounting a machine component on a support structure |
| US6185847B1 (en) * | 1997-09-17 | 2001-02-13 | R. A. Hanson Company, Inc. | Continuous shovel |
| CN2804183Y (en) * | 2004-12-23 | 2006-08-09 | 湖南三弘重科机械制造有限公司 | Shearleg tightrope fixer of excavator |
| CN201087431Y (en) * | 2007-08-08 | 2008-07-16 | 淄博大力矿山机械有限公司 | Chain pilot wheel device of electric rock loader |
| CN104480990A (en) * | 2011-04-29 | 2015-04-01 | 哈尼施费格尔技术公司 | Controlling a digging operation of an industrial machine |
| CN107447803A (en) * | 2017-08-15 | 2017-12-08 | 太原理工大学 | The mechanical mining excavator of combination drive |
| CN109706990A (en) * | 2018-12-27 | 2019-05-03 | 太原重工股份有限公司 | Mine excavator operating mechanism and mine excavator |
| CN209620154U (en) * | 2019-01-29 | 2019-11-12 | 北京大圣格尔冶金设备有限公司 | A kind of hollow shaft motor direct-drive type dipper crowding gear and large excavator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183420A (en) * | 2021-11-11 | 2022-03-15 | 太原重工股份有限公司 | Synchronous jacking system for overhaul of excavator and synchronous jacking method for upper mechanism of excavator |
| CN114183420B (en) * | 2021-11-11 | 2023-06-27 | 太原重工股份有限公司 | Synchronous jacking system for overhaul of excavator and synchronous jacking method for upper mechanism of excavator |
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| Publication number | Publication date |
|---|---|
| CN112627260B (en) | 2022-09-27 |
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