CN115596034A - Mining excavator pushing mechanism and excavator - Google Patents
Mining excavator pushing mechanism and excavator Download PDFInfo
- Publication number
- CN115596034A CN115596034A CN202211024174.2A CN202211024174A CN115596034A CN 115596034 A CN115596034 A CN 115596034A CN 202211024174 A CN202211024174 A CN 202211024174A CN 115596034 A CN115596034 A CN 115596034A
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- pressing
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- gear
- saddle
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- 230000007246 mechanism Effects 0.000 title claims abstract description 42
- 238000005065 mining Methods 0.000 title claims abstract description 35
- 238000003825 pressing Methods 0.000 claims abstract description 95
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
Abstract
The invention discloses a pushing mechanism of a mining excavator and the mining excavator, wherein the pushing mechanism comprises: a pushing motor device, a pushing speed reducer and a pushing shaft device; the pushing and pressing shaft device comprises a saddle, a pushing and pressing shaft, a first pushing and pressing gear, a second pushing and pressing gear and double shaft sleeves, wherein the first pushing and pressing gear is sleeved in the middle of the pushing and pressing shaft, the two double shaft sleeves are respectively sleeved on the pushing and pressing shaft and positioned on two sides of the first pushing and pressing gear, the pushing and pressing shaft is connected with the crane boom through the double shaft sleeves, the two second pushing and pressing gears are respectively sleeved on the pushing and pressing shaft and positioned on the outer sides of the two double shaft sleeves, the two saddles are respectively fixed at two ends of the pushing and pressing shaft, the bucket rod can be limited in the saddles in a sliding manner, and a rack matched with the second pushing and pressing gear is arranged on the bucket rod and used for moving back and forth under the driving of the second pushing and pressing gear; the pushing and pressing speed reducer is connected between the pushing and pressing motor device and the first pushing and pressing gear, and the driving force of the pushing and pressing motor device is transmitted to the first pushing and pressing gear through the pushing and pressing speed reducer to drive the second pushing and pressing gear to rotate.
Description
Technical Field
The invention relates to the technical field of mining equipment, in particular to a pushing and pressing mechanism of a mining excavator and the mining excavator.
Background
The pushing mechanism is an important component of a working mechanism of the mining excavator, and in the prior art, some pushing mechanisms adopt a steel wire rope pushing mode, so that the structure is complex, and the steel wire rope is frequently replaced; some adopt the rack and pinion mode of bulldozing, the motor direct drive pushes away the pressure shaft, and the motor is fragile, and the maintenance cost is high.
Disclosure of Invention
In order to solve part or all of technical problems in the prior art, the invention provides a pushing mechanism of a mining excavator and the mining excavator. The technical scheme is as follows:
in a first aspect, a mining excavator pushing mechanism is provided, including: a pushing motor device, a pushing speed reducer and a pushing shaft device; the pushing and pressing shaft device comprises a saddle, a pushing and pressing shaft, a first pushing and pressing gear, a second pushing and pressing gear and double shaft sleeves, the first pushing and pressing gear is sleeved in the middle of the pushing and pressing shaft, the two double shaft sleeves are respectively sleeved on the pushing and pressing shaft and positioned on two sides of the first pushing and pressing gear, the pushing and pressing shaft is connected with a cargo boom through the double shaft sleeves, the two second pushing and pressing gears are respectively sleeved on the pushing and pressing shaft and positioned on the outer sides of the two double shaft sleeves, the two saddles are respectively fixed at two ends of the pushing and pressing shaft, the saddle is in contact with a bucket rod through a one-side cantilever type structure so that the bucket rod can be limited in the saddle in a sliding manner, and a rack matched with the second pushing and pressing gear is arranged on the bucket rod and used for moving back and forth under the driving of the second pushing and pressing gear; the pushing speed reducer is connected between the pushing motor device and the first pushing gear, and the driving force of the pushing motor device is transmitted to the first pushing gear through the pushing speed reducer so as to drive the second pushing gear to rotate.
In some optional implementations, the saddle comprises a saddle body, an upper sliding plate, a side sliding plate, an upper adjusting gasket and a side adjusting gasket, the saddle body comprises a vertical part and an upper suspension part which is connected to the top end of the vertical part and extends transversely and inwards, the upper sliding plate is arranged on the bottom surface of the upper suspension part, the side sliding plate is arranged on the inner side of the vertical part, and the upper sliding plate and the side sliding plate are respectively opposite to the bucket rod and used for guiding the bucket rod; the upper sliding plate and the saddle body are provided with an upper adjusting gasket for adjusting the distance between the upper sliding plate and the saddle body, and the side sliding plate and the saddle body are provided with a side adjusting gasket for adjusting the distance between the side sliding plate and the saddle body.
In some optional implementation modes, the double-shaft sleeve comprises a steel sleeve positioned on an outer ring and a copper sleeve positioned on an inner ring, the steel sleeve and the copper sleeve are fixed together through two positioning pins, an O-shaped sealing ring is arranged between the steel sleeve and the crane boom, a spigot is arranged on one side, close to the pushing and pressing speed reducer, of the copper sleeve, a sealing element is arranged in the spigot, an open groove is arranged inside the steel sleeve, an elastic check ring is arranged in the open groove, and the part, extending out of the open groove, of the elastic check ring is opposite to the end face of the sealing element.
In some optional implementations, the inner side of the second push gear is provided with a thrust pad, and the thrust pad is connected to the steel sleeve through a bolt; the saddle further comprises an inner side copper sleeve, and the inner side copper sleeve is sleeved on the pushing shaft and abuts against the outer side of the second pushing gear to position the second pushing gear.
In some optional implementations, two ends of the pushing shaft are provided with hydraulic adjusting devices for adjusting an axial gap of the pushing shaft, and the hydraulic adjusting devices include: the hydraulic device comprises an adjusting support, a hydraulic cylinder and a hydraulic pump, wherein the adjusting support is detachably connected to the outer side of the saddle, the hydraulic cylinder is arranged on the adjusting support, the hydraulic cylinder is a hollow hydraulic cylinder, one end of an elongated bolt penetrates through the inside of the hydraulic cylinder, and the other end of the elongated bolt is connected with a pushing shaft and used for being driven by the hydraulic pump to move in the hydraulic cylinder.
In some alternative implementations, the thrust motor arrangement includes: the pressing motor, the pressing motor base, the belt, the main belt pulley and the auxiliary belt pulley; the pushing motor base is arranged on the crane boom, the pushing motor is arranged on the pushing motor base, the main belt pulley is sleeved on an output shaft of the pushing motor, the driven belt pulley is arranged in the pushing speed reducer, and the belt is sleeved on the main belt pulley and the driven belt pulley and used for driving the driven belt pulley to rotate.
In some optional implementations, the push motor apparatus further comprises: a pressure adjustment member opposite the belt for tensioning the belt.
In some optional implementations, the pushing speed reducer is a two-stage cylindrical gear transmission structure and comprises a pushing shaft and a pushing shaft which are arranged on the crane boom, the driven belt pulley is sleeved at one end of the pushing shaft, and a pushing brake is arranged at the other end of the pushing shaft; the pushing and pressing shaft is meshed with the first pushing and pressing gear and used for driving the first pushing and pressing gear to rotate.
In some optional realization modes, the one side that bulldozes the biax is provided with and bulldozes the encoder device, it includes encoder support, shaft coupling, encoder and protection casing to bulldoze the encoder support and connect bulldoze on the biax, the encoder passes through the coupling joint in the encoder support, the encoder is used for detecting the dipper stroke and bulldozes spacing protection to accessible PLC program sets up and bulldozes the speed with the length control that stretches out according to the dipper.
In a second aspect, there is provided an excavator comprising a mining excavator thrust mechanism as defined in any one of the preceding claims.
The technical scheme of the invention has the following main advantages:
the pushing mechanism of the mining excavator and the mining excavator adopt a gear rack pushing mode, so that the transmission efficiency is high, and the service life is long.
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 diagrammatic view of a drive train of a racking mechanism of a mining excavator in accordance with one embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pushing mechanism of a mining excavator according to an embodiment of the present invention;
fig. 3 is a partial front view of a pushing mechanism of a mining excavator according to an embodiment of the invention;
fig. 4 is a partial top view of a mining excavator pushing mechanism provided in accordance with an embodiment of the present invention;
fig. 5 is a partial schematic view of a pushing biaxial position of the pushing mechanism of the mining excavator according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a push encoder device in a push mechanism of a mining excavator according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a pushing shaft in a pushing mechanism of a mining excavator according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a saddle of a racking mechanism of a mining excavator according to one embodiment of the present invention;
fig. 9 is a schematic structural view of a double shaft sleeve in a pushing mechanism of a mining excavator according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a hydraulic adjusting device in a pushing mechanism of a mining excavator according to an embodiment of the present invention.
Description of the reference numerals:
100-pushing mechanism, 200-bucket rod, 300-cargo boom, 400-cab,
101-thrust motor means, 1-thrust motor, 2-thrust motor mount, 3-pressure regulating member, 4-belt, 5-primary pulley, 6-belt cover, 7-secondary pulley,
102-push reducer, 1021-push primary shaft, 1022-push secondary shaft, 8-push brake, 9-push encoder device, 91-encoder support, 92-coupler, 93-encoder, 94-shield
103-a push shaft device,
10-saddle, 11-saddle body, 12-upper sliding plate, 13-side sliding plate, 14-upper adjusting gasket, 15-side adjusting gasket, 16-inner side copper sleeve, 17-outer side copper sleeve,
20-pushing shaft, 30-first pushing gear, 70-second pushing gear,
40-double shaft sleeve, 41-steel sleeve, 42-copper sleeve, 43-positioning pin, 44-sealing element, 45-elastic retainer ring,
50-hydraulic adjusting device, 51-adjusting bracket, 52-hydraulic cylinder, 53-hydraulic pump,
60-thrust pad.
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 explained in detail in the following with the accompanying drawings.
According to the pushing mechanism 100 of the mining excavator, as shown in fig. 1 to 4, one end of a boom 300 is connected to an excavator working platform, a bucket rod 200 is connected to the boom 300 through the pushing mechanism 100, and the pushing mechanism 100 is used for controlling the bucket rod 200 to stretch and retract. The pressing mechanism 100 includes: a press motor device 101, a press reducer 102, and a press shaft device 103.
The pressing motor device 101 includes a pressing motor 1, a pressing motor base 2, a pressure adjuster 3, a belt 4, a main pulley 5, a belt cover 6, and the like. The pushing motor 1 is an alternating current variable frequency motor and is installed on an adjustable pushing motor base 2, and a main belt pulley 5 of a pushing mechanism 100 is installed on an output shaft of the pushing motor 1. A secondary pulley 7 is mounted on one end of a pressing shaft 1021, and a strong V-shaped connection belt 4 is used for transmission between the primary pulley 5 and the secondary pulley 7. The assembled belt 4 is equipped with a tension pressure adjusting member 3 for ensuring a constant tension of the belt 4 and limiting the maximum dynamic load to which the pressing mechanism 100 is subjected.
In the embodiment of the invention, the push reducer 102 is driven by a two-stage spur gear with a hardened spur gear surface and is integrated in the body of the crane boom 300. The pressure reducer 102 includes a pressure shaft 1021 and a pressure shaft 1022. The pressing shaft 1021 is a double-shaft extension structure, and has a secondary pulley 7 at one end and a pressing brake 8 at the other end, and the pressing brake 8 is a disc brake that is a spring brake or a pneumatic brake.
As shown in fig. 5 and 6, a push encoder device 9 is provided on one side of the push biaxial shaft 1022, and the push encoder device 9 includes an encoder support 91, a coupling 92, an encoder 93, and a protective cover 94. The encoder support 91 and the pushing biaxial 1022 adopt a spigot positioning and bolt connection structure.
The encoder 93 is an absolute value encoder for detecting the stroke of the arm 200 and for protecting the pressing limit. The encoder 93 may be set by the PLC program to calibrate the encoder, with pre-deceleration and stop limit functions. The push encoder 93 is set by a touch panel in the cab 400, and the excavator operates at 15% speed under the setting screen, and when the arm 200 is pushed out, the push speed is reduced to 50% when five teeth remain on the lower rack at the rear of the arm 200, the speed is reduced to 10% when three teeth remain, and when two teeth remain, the push speed is 0 and the pushing is stopped.
As shown in fig. 7, the pressing shaft device 103 is an output shaft device of the pressing mechanism 100, and mainly includes a saddle 10, a pressing shaft 20, a first pressing gear 30, a second pressing gear 70, a double-shaft sleeve 40, a hydraulic pressure adjusting device 50, and a thrust pad 60.
As shown in FIG. 8, the saddle 10 includes a saddle body 11, an upper slide plate 12, a side slide plate 13, an upper adjustment pad 14, a side adjustment pad 15, an inner copper shell 16, and an outer copper shell 17. The saddle 10 is in contact with the bucket rod 200 by adopting a single-side cantilever type structure, and is fixed at two ends of the pushing shaft 20 through nuts, so that the adjustment and maintenance are convenient. Two upper sliding plates 12 are arranged at the upper part of the saddle 10, and a side sliding plate 13 is arranged at the side surface. By increasing or decreasing the thickness of upper adjustment pad 14 at upper slide 12 or side adjustment pad 15 at side slide 13, the clearance between upper slide 12 and side slide 15 and stick 200 may be varied.
The pushing shaft 20 adopts a bilateral symmetry structure, can be disassembled and assembled from two sides, is convenient to process and maintain, the first pushing gear 30 is connected in the middle of the pushing shaft 20 through a spline, and the two sides are respectively connected and fixed with the lifting arm 300 through double shaft sleeves 40.
As shown in fig. 9, the double shaft sleeve 40 is a steel sleeve 41 in contact with the boom 300, an O-ring 46 is provided near the inner side of the boom 300, and a copper sleeve 42 is in contact with the pressing shaft 20. The double-shaft sleeve 40 is fixed together through two positioning pins 43 respectively, a spigot is arranged on one side of the copper sleeve 42 close to the inner part of the push-press speed reducer 102, a sealing element 44 is arranged in the spigot, the sealing element 44 is a framework double-J-shaped seal, a groove is formed in the outer steel sleeve 41, and an elastic retainer ring 45 is arranged in the groove.
A second push gear 70 is spline-coupled to the outside of the double sleeve 40 of the push shaft 20, a thrust pad 60 is provided inside the second push gear 70, and the thrust pad 60 is bolt-coupled to the steel sleeve 41. The outside of the second push gear 70 is positioned against the inside copper bush 16 of the saddle 10.
The above and the following means of the outer and inner sides of the pressing shaft 20: the direction from the center of the pressing shaft 20 to both ends is from inside to outside, whereas the direction from both ends to the center is from outside to inside. The inner and outer sides indicate positions distributed in the axial direction of the pressing shaft 20 on the pressing shaft 20.
As shown in fig. 10, hydraulic adjusting devices 50 for adjusting the axial clearance of the pressing shaft 20 are provided at both ends of the pressing shaft 20, and the hydraulic adjusting devices 50 include an adjusting bracket 51, a hydraulic cylinder 52, and a hydraulic pump 53. The hydraulic cylinder 52 is a hollow type hydraulic cylinder. The adjusting bracket 51 is connected with a flange on the outer side of the saddle 10 through a bolt and is tightly propped through an outer copper sleeve 17. When the pushing shaft 20 needs to be adjusted to one side, the adjustment of the axial clearance of the pushing shaft 20 can be realized only by mounting the hydraulic cylinder 52 on the adjusting bracket 51, and passing one end of the lengthened bolt through the hydraulic cylinder 52 and connecting the other end of the lengthened bolt with the pushing shaft 20.
In summary, the pressing mechanism 100 of the present invention adopts a rack and pinion pressing method. The pushing and the recovery of the bucket rod 200 are driven by an alternating current variable frequency motor, power is transmitted to a two-stage straight tooth hard tooth surface transmission pushing and pressing speed reducer 102 through a V-shaped anti-impact combined belt 4, the power is transmitted to a first pushing and pressing gear 30 through the pushing and pressing speed reducer 102, the first pushing and pressing gear 30 and a second pushing and pressing gear 70 are both sleeved on a pushing and pressing shaft 20, the pushing and pressing shaft 20 is driven to rotate when the first pushing and pressing gear 30 rotates, the second pushing and pressing gear 70 is driven to rotate, the rack on the bucket rod 200 is driven by the second pushing and pressing gear 70, and the pushing and the recovery of the bucket rod 200 are completed.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The pushing mechanism adopts a gear rack pushing mode, so that the transmission efficiency is high, and the service life is long.
(2) The pushing encoder device 9 and the pushing speed reducer 102 adopt a spigot positioning and bolt connecting structure, so that the positioning precision is high, the encoder 93 has strong anti-interference capability, and the limiting adjustment is convenient.
(3) The push shaft device 103 avoids abrasion of the push shaft 20, and meanwhile, when the service life of the copper sleeve 42 is over, the copper sleeve 42 is convenient to take out from the crane boom 300 body, and the maintenance is convenient; the saddle 10 is convenient to adjust, and the structure is reliable, and the maintenance cost is low.
(4) The structure of the invention prevents lubricating grease of the lubricating copper bush from overflowing to the pushing gear box, so as to prevent closed gear oil of the pushing gear box from deteriorating, and reduce the risk that the lubricating oil must be replaced again.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are 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 all referred to the placement state 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 should 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. The utility model provides a mining excavator pushing mechanism which characterized in that includes: a pushing motor device, a pushing speed reducer and a pushing shaft device;
the pushing and pressing shaft device comprises a saddle, a pushing and pressing shaft, a first pushing and pressing gear, a second pushing and pressing gear and double shaft sleeves, the first pushing and pressing gear is sleeved in the middle of the pushing and pressing shaft, the two double shaft sleeves are respectively sleeved on the pushing and pressing shaft and positioned on two sides of the first pushing and pressing gear, the pushing and pressing shaft is connected with a cargo boom through the double shaft sleeves, the two second pushing and pressing gears are respectively sleeved on the pushing and pressing shaft and positioned on the outer sides of the two double shaft sleeves, the two saddles are respectively fixed at two ends of the pushing and pressing shaft, the saddle is in contact with a bucket rod through a single-side cantilever type structure so that the bucket rod can be limited in the saddle in a sliding manner, and a rack matched with the second pushing and pressing gear is arranged on the bucket rod and used for moving back and forth under the driving of the second pushing and pressing gear;
the pushing speed reducer is connected between the pushing motor device and the first pushing gear, and the driving force of the pushing motor device is transmitted to the first pushing gear through the pushing speed reducer so as to drive the second pushing gear to rotate.
2. The mining excavator pushing mechanism according to claim 1, wherein the saddle comprises a saddle body, an upper sliding plate, a side sliding plate, an upper adjusting gasket and a side adjusting gasket, the saddle body comprises a vertical part and an upper suspension part which is connected to the top end of the vertical part and extends transversely inwards, the upper sliding plate is arranged on the bottom surface of the upper suspension part, the side sliding plate is arranged on the inner side of the vertical part, and the upper sliding plate and the side sliding plate are respectively opposite to the bucket rod and used for guiding the bucket rod; the upper sliding plate and the saddle body are provided with an upper adjusting gasket for adjusting the distance between the upper sliding plate and the saddle body, and the side sliding plate and the saddle body are provided with a side adjusting gasket for adjusting the distance between the side sliding plate and the saddle body.
3. The mining excavator pushing mechanism according to claim 2, wherein the double shaft sleeve comprises a steel sleeve located at an outer ring and a copper sleeve located at an inner ring, the steel sleeve and the copper sleeve are fixed together through two positioning pins, an O-shaped sealing ring is arranged between the steel sleeve and the crane boom, a spigot is arranged at one side, close to the pushing speed reducer, of the inside of the copper sleeve, a sealing element is arranged in the spigot, an open slot is arranged in the steel sleeve, a circlip is arranged in the open slot, and the part, extending out of the open slot, of the circlip is opposite to the end face of the sealing element.
4. The mining excavator pushing mechanism of claim 3, wherein a thrust pad is arranged on the inner side of the second pushing gear, and the thrust pad is connected to the steel sleeve through a bolt;
the saddle further comprises an inner side copper sleeve, and the inner side copper sleeve is sleeved on the pushing shaft and abuts against the outer side of the second pushing gear to position the second pushing gear.
5. The mining excavator pushing mechanism according to claim 1, wherein both ends of the pushing shaft are provided with hydraulic adjusting devices for adjusting an axial gap of the pushing shaft, the hydraulic adjusting devices comprising: the hydraulic device comprises an adjusting support, a hydraulic cylinder and a hydraulic pump, wherein the adjusting support is detachably connected to the outer side of the saddle, the hydraulic cylinder is arranged on the adjusting support, the hydraulic cylinder is a hollow hydraulic cylinder, one end of an elongated bolt penetrates through the inside of the hydraulic cylinder, and the other end of the elongated bolt is connected with a pushing shaft and used for being driven by the hydraulic pump to move in the hydraulic cylinder.
6. The mining shovel thrust mechanism of claim 1, wherein the thrust motor arrangement includes: the pressing motor, the pressing motor base, the belt, the main belt pulley and the auxiliary belt pulley;
the pushing motor base is arranged on the crane boom, the pushing motor is arranged on the pushing motor base, the main belt pulley is sleeved on an output shaft of the pushing motor, the driven belt pulley is arranged in the pushing speed reducer, and the belt is sleeved on the main belt pulley and the driven belt pulley and used for driving the driven belt pulley to rotate.
7. The mining shovel thrust mechanism of claim 6, wherein the thrust motor arrangement further comprises: a pressure adjustment member opposite the belt for tensioning the belt.
8. The mining excavator pushing mechanism according to claim 7, wherein the pushing speed reducer is a two-stage cylindrical gear transmission structure and comprises a pushing first shaft and a pushing second shaft which are arranged on a crane boom, the driven belt pulley is sleeved at one end of the pushing first shaft, and a pushing brake is arranged at the other end of the pushing first shaft; the pushing and pressing shaft is meshed with the first pushing and pressing gear and used for driving the first pushing and pressing gear to rotate.
9. The mining excavator pushing mechanism according to claim 8, wherein a pushing encoder device is arranged on one side of the pushing shaft, the pushing encoder device comprises an encoder support, a coupler, an encoder and a protective cover, the encoder support is connected to the pushing shaft, the encoder is connected to the encoder support through the coupler, the encoder is used for detecting the stroke of the arm and pushing limiting protection, and the pushing encoder can be set through a PLC program to control the pushing speed according to the extending length of the arm.
10. An excavator, characterized by comprising a mining excavator thrust mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211024174.2A CN115596034B (en) | 2022-08-24 | 2022-08-24 | Mining excavator pushing and pressing mechanism and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211024174.2A CN115596034B (en) | 2022-08-24 | 2022-08-24 | Mining excavator pushing and pressing mechanism and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115596034A true CN115596034A (en) | 2023-01-13 |
| CN115596034B CN115596034B (en) | 2024-04-09 |
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| CN202211024174.2A Active CN115596034B (en) | 2022-08-24 | 2022-08-24 | Mining excavator pushing and pressing mechanism and excavator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130195593A1 (en) * | 2012-01-31 | 2013-08-01 | Harnischfeger Technologies, Inc. | Shovel with passive tilt control |
| CN103669457A (en) * | 2013-12-16 | 2014-03-26 | 上海三一重机有限公司 | Gear location mode of novel mining excavator pushing mechanism and excavator |
| CN111962587A (en) * | 2020-08-10 | 2020-11-20 | 北京航空航天大学 | Mining electric shovel working device with electro-hydraulic auxiliary operation movement |
| CN114411843A (en) * | 2021-12-31 | 2022-04-29 | 太原重工股份有限公司 | Zero calibration device and method for lifting and pushing mechanism of front shovel type excavator |
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2022
- 2022-08-24 CN CN202211024174.2A patent/CN115596034B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130195593A1 (en) * | 2012-01-31 | 2013-08-01 | Harnischfeger Technologies, Inc. | Shovel with passive tilt control |
| CN103669457A (en) * | 2013-12-16 | 2014-03-26 | 上海三一重机有限公司 | Gear location mode of novel mining excavator pushing mechanism and excavator |
| CN111962587A (en) * | 2020-08-10 | 2020-11-20 | 北京航空航天大学 | Mining electric shovel working device with electro-hydraulic auxiliary operation movement |
| CN114411843A (en) * | 2021-12-31 | 2022-04-29 | 太原重工股份有限公司 | Zero calibration device and method for lifting and pushing mechanism of front shovel type excavator |
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